Sharp Sd2060 Copier Service Manual

SERVICE MANUAL CODE:00ZSD2060TM/E

NO.2 MODEL

SD-2060

CONTENTS

[1] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 [2] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 [3] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 [4] PROCESS SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 [5] DEVELOPER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 [6] PAPER FEED/TRANSPORT SECTION . . . . . . . . . . . . . . . . . . . . . . . . 6-1 [7] OPTICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 [8] RADF SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 [9] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 [10] COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

Parts marked with "! " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

CONTENTS [ 1 ] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1. 2. 3. 4.

SD-2060 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Target usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 1. 2. 3. 4. 5.

Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Details of each section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Other options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Supply parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[ 3 ] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 1. 2. 3. 4. 5. 6. 7.

Appearance and structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Internal structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Clutches and solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 PWB unit list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

[ 4 ] PROCESS (Photoconductor drum and cleaning unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 1. 2. 3. 4.

Basic theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 SD-2060 basic process and structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Basic structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9 Optical system dirt correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

[ 5 ] DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 1. Basic theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 2. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 3. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

[ 6 ] PAPER FEED/TRANSPORT SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 2. Basic composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 3. Basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

[ 7 ] OPTICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 1. 2. 3. 4.

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Basic composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Basic operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Optical system dirt/copy lamp deterioration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

[ 8 ] RADF (Reversing Automatic Document Feeder) unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 2. Basic composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 3. Basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

I

[ 9 ] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 1. 2. 3. 4. 5.

System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Operations at power ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Main circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 POWER SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12 RADF Electrical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16

[10] COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 1. General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 2. System A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 3. System B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

II

[1] PRODUCT OUTLINE Auto job recovery This new function allows a misfeed error to be cancelled automatically by removing the minimum number of misfed paper (s) in case of a misfeed error. The drive section of the main body is divided into several blocks which are independently driven, allowing paper feed in the blocks after the misfeed block, and minimizing the number of jammed pages to be removed after the misfeed error.

1. SD-2060 The SD-2060 has an original replacement speed of 60 sheets (A4 and 8.5"x11") per minute using the RADF as well as a copying speed of 60 sheets per minute. In addition, the air feed system reduces the possibility of paper misfeed and the AISC (Active Image Control System) corrects deterioration in copy quality, thereby providing higher reliability. The large liquid crystal display allows mproved maneuverability for the operator and service technician.

3 Communication error The SD-2060 can communicate with a remote service center through the telephone line. This feature allows the service technician to identify the error position in advance to making a service visit, thereby reducing the servicing time.

2. Target usage Copy volume range: 20,000-80,000 copies/month Average copy volume: 30,000 copies/month

(3) Ease of operation using the LCD message display

3. Product features 1 Key operator programs By using the key operator programs, various mode settings and adjustments can be performed according to the user’s requirements. Accurate account control and proper billing for copy usage can also be accomplished with certain key operator codes.

(1) High productivity 1 The newly developed RADF realizes 100% efficiency in switching from single copy to duplex copy.

2 Automatic after-process functions when using the 50-sheet staple

(4) High copy quality

sorter (SF-S53).

3 Full frame & unit construction

1 AICS (Active Image Control System)

The frame of the SD-2060 is made of a high strength, rigid construction. Because of this, it can endure long period operations. In addition, the modular construction allows rapid replacement of the sub-assemblies in case of trouble, minimizing down time of the machine.

Equipped with SHARP’s unique AICS (Active Image Control System), Toner density on the photoconductor drum is regularly monitored, and any variation in density due to deterioration is automatically corrected, maintaining high copy quality throughout the life of the photoconductor drum.

(2) High reliability 1 Air feed system By utilizing air pressure without machanical contact, the paper transport capability is more stabilized than the conventional roller feed systems, reducing the possibility of double feed and misfeed.

4. System configuration SF-S53 Staple sorter (21 bins)

SD-2060 Note: The SFEA12 is used in SEC market Card type department counter SF-EA11

Main body

SF-S16 Sorter (20 bins)

SF-EA13 Counter commander

Department control Expansion RAM

DKIT-0321FCZZ Communication I/F board CLPTM4132FC55

1–1

2. Functions

[2] PRODUCT SPECIFICATIONS

(1)

Type:

(2)

Kinds of originals

Automatic mode, manual mode (9 Copy density control steps), photo mode (9 steps), toner save mode

Console

(3)

5.5″ × 8.5″ ∼ 11″ × 17″, A3 ∼ A5 (Fixed size)

(4)

Normal copy

Reduction (50%)

magnification (200%)

11″ × 17″

35 sheets/min 35 sheets/min 34 sheets/min

8.5″ × 14″

40 sheets/min 38 sheets/min 39 sheets/min

8.5″ × 11″ (Portrait)

60 sheets/min 52 sheets/min 43 sheets/min

8.5″ × 11″ (Landscape)

44 sheets/min 43 sheets/min 42 sheets/min

A3

35 sheets/min 35 sheets/min 34 sheets/min

B4

40 sheets/min 38 sheets/min 39 sheets/min

A4 (Portrait)

60 sheets/min 52 sheets/min 43 sheets/min

A4 (Landscape)

44 sheets/min 43 sheets/min 42 sheets/min

B5 (Portrait)

60 sheets/min 57 sheets/min 43 sheets/min

B5 (Landscape)

44 sheets/min 43 sheets/min 42 sheets/min

(3)

Paper feed system

3-tray, multi manual feed (Trays can be locked.)

Paper feed capacity

4100 (2000 + 1000 × 2 + 100, 80g/m2)

Warmup time

SD-2060: Approx. 5 min

(6)

First copy time

4.0 sec (Fed from tray 1.)

(7)

Misfeed recovery time Within 5 sec (Conditions: Misfeed in a section other than the fuser section within 60 sec from opening the door in the standard conditions)

(9)

(2)

Paper feed

(5)

(8)

Paper/magnification Possible in RADF operation ratio selection

Copy speed Paper size

Automatic (Can be inhibited by the key operator program.)

Tray selection

Max. original size A3, 11″ × 17″ Copying size

1 ∼ 999 sheets

Multicopying

1. Basic specifications (1)

Basic functions

RADF

Simplex or duplex originals, face-down setting

Finish

Sort/group (when connected with the sorter) Sort/group/staple sort (when connected with the staple sorter)

Automatic duplex copying

One-side original → duplex copy Duplex original → duplex copy

Magnification ratio Fixed magnification ratio

50, 70, 81, 86, 100, 115, 122, 141, 200%

Zooming width

50 ∼ 200%, 151 steps in 1% increment

Additional functions Dual page copy Available Binding margin Right binding, left binding Shift amount AB series (0mm, 3mm, 6mm, 9mm, 12mm, 15mm) Inch series (0″, 1/8″, 1/4″, 3/8″, 1/2″, 5/8″) Edge erase

Edge erase, center erase, edge + center erase

Dimensions (W × D × H)

1167 × 731 × 1038 mm

Cover insertion Cover only, back cover only, both cover and back cover Cover copying available (single copy, duplex copy)

Installation area

1627 × 731 mm (When the staple sorter is installed, 1747 × 731mm)

Index paper insertion

Max. insertion quantity: 18 sheets Index paper copying available copying, duplex copying)

OHP index sheet

Index paper copying available

Auditor

Standard 500 departments, expandable to max. 3100 departments (When DKIT-0321FCZZ is installed.)

Job program

Number of programs 9 (P1 ∼ P9)

Appearance

Weight

Approx. 239 kg (526 lbs)

(10) Power source, max. power consumption SD-2060 Power

120V, 20A, 50Hz/60Hz common

Max. power consumption

2.0KW (including the sorter)

(Single

Communication Available when CPLTM4132FC55 is installed feature

2–1

3. Details of each section (2)

1

Original entry section

(1)

Platen

(2)

Staple sorter (SF-S53) No. of bins Non-sort bin 1 Sort bin

Max. original size

A3/11″ × 17″

Original reference position

Center reference (Set at left end)

Sorting size

B5, A4, B4, A3, B5R, A4R, 8.5″ × 11″(R) 8.5″ × 14″, 11″ × 17″

Stapling size

B5, A4, B4, A3, A4R, 8.5″ × 11″(R) 8.5″ × 14″, 11″ × 17″

Capacity

Min. 8.5″ × 14″, A3, B4

RADF Original capacity

50 sheets

Original size

A5 ∼ A3/5.5″ × 8.5″ ∼ 11″ × 17″

sorting

Original weight Single-sided 13~32 lbs (35 ∼ 128g/m ) (35 ∼ original 50g/m2 for thin paper mode) (Perforated computer form (5.5″ × 8.5″ ∼ 11″ × 14.7/8″), perforated original, heatsensitive paper for FAX)

Grouping

2

Detection size

B5, A4, B4, A3, B5R, A4R, 8.5″ × 11″, 8.5″ × 14″, 11″×17″

Flow sensor detection

B5, A4, B4, A3, B5R, A4R 81⁄2″×11″(R)x81⁄2″×14″, 11″×17″

25 sheets

Stapling quantity

50 sheets

Stapling position

Left upper position

Stapler cartridge

5000 pcs.

Stapler detection

YES

Alignment

±1.5mm (maximum-3mm)

corner,

diagonal,

1

4. Other options (1)

Card counter (SF-EA11) (For SEC-SF-EA12 is used)

Paper feed section

(2)

Commander (SF-EA13)

Copying size

(3)

Communication interface board (CPLTM41320FC52, fixing screw: XHBSD40P10000)

(4)

Department control expansion RAM (DKIT-0321FCZZ)

(5)

Key sheet and operation manual kits.

5.5" × 8.5" to 11" x 17""

A5 to A3, Paper feed port

Paper size Capacity Applicable Detecting size range

Paper weight 15-24 lbs Standard paper only 60 ~ 90g/m2

First tray

2000 sheets

B5, A4 8.5″×11″

B5, A4 8.5″×11″

Second tray Third tray

1000 sheets

B5 ∼ A3 8.5″×11″ to 11″×17″

B5, A4, B4, 15-32 lbs Standard paper only A3, B5R, A4R, 60 ∼ 8.5″ × 11″(R) 128g/m2 8.5″ × 14″ 11″×17″

Manual feed tray

3

Min. 8.5″ × 14″, A3, B4

Max. 30 sheets 8.5″ × 11″, A4, A4R, B5

Duplex-sided 13~32 lbs (50 ∼ 128g/m 2) original 5.5″×8.5″ to 8.5″×11″ (A5 ∼ A4) 13~28 lbs (50 ∼ 110g/m 2) 8.5″×14" to 11″×17″ (A5 ∼ A3) Available

25 sheets

Max. 50 sheets 8.5″ × 11″, A4, A4R, B5

2

Random/mix paper feed

20

100 sheets

A5 ∼ A3 5.5″×8.5″ to 11″×17″

B5, A4, B4, 15-32 lbs A3, B5R, A4R, 50 ∼ 5.5 " x 8.5", 128g/m2 8.5" x 11″(R) 8.5" x 14" 11″×17″″

Index paper 65 lbs (176g) Cover paper 110 lbs (200g), OHP, etc.

Duplex section Paper size

B5, A4, B4, A3, B5R, A4R, 8.5″ × 11″(R) 8.5″ × 14″, 11×17

Paper weight

15-24 lbs 60 ∼ 90g/m2

Intermediate tray capacity

50 sheets (80g/m2/20 lb bond)

4

Option

(1)

Sorter (SF-S16) No. of Bins Sort bin

20

Sortable size

B5, A4, B4, A3, B5R, A4R, 8.5″ × 11″(R) 8.5″ × 14″, 11″×17″

Capacity

Sorting

50 sheets

Grouping

30 sheets

2–2

English

SD-260SE

German

SD-260SG

French

SD-260SF

Dutch

SD-260SH

Spanish

SD-260SS

Italian

SD-260SI

5. Supply parts SD-2060 SUPPLIES LIST (SEC) No.

ITEM

LIFE

MODEL NAME

Packing Unit

REMARK

1

Drum

OPC Drum

x1

250K

SD-360DR

6

2

Developer

Developer

(1.0Kg ) x10

250K ( x 5 )

SD-360MD

1

Two packs should be changed in replacement. (SD-360ND) x 10 = SD-360MD

3

Toner

Toner Cartridge

(0.93Kg ) x10 28K ( x 10)

SD-360MT

1

(SD-360NT) x 10 = SD-360MT

Upper Heat Roller Kit

Upper Heat Roller Upper Separation Pawl

x1 x4

500K

SD-360UH

5

Lower Heat Roller Kit

Lower Heat Roller Lower Separation Pawl

x1 x4

250K

SD-360LH

5

6

Cleaner Blade

Cleaner Blade

x 10

125K ( x 10)

SD-360CB

1

7

Upper Cleaning Roller Upper Cleaning Roller

x 10

125K ( x 10)

SD-360UR

1

8

Lower Cleaning Roller Lower Cleaning Roller

x 10

125K ( x 10)

SD-360LR

1

9

Waste Toner Bottle

Waste Toner Bottle

x1

125K

SD-360TB

5

Staple Cartridge

x5

5000Staple ( x 5 ) SD-LS20

10

For SD-2075/3075, SF-S53 (SD-SC20) x 5 = SD-LS20

360CP

x5

250K

1

(360CP) x 5 = 360CK)

(Drum Separation Pawl (Charging Plate Unit (CL Side Seal F/R (DV Side Seal F/R (Toner Receiving Seal

x 2) x 1) x 1) x 1) x 1)

4 5

10 Staple Cartridge 11 Convenience Parts Kit

@

CONTENTS

SD-360CK

The waste toner bottle (1 pc/125K), the screen grid (250K), the charger wire (250K), the ozone filter (500K), the DV seal (500K), and the CL brush roller (500K) are supplied as service parts. The charging plate unit (250K), the drum separation pawl (250K), and the toner receiving seal (250K) are provided as service parts though they are sales items.

SD-2060 SUPPLIES LIST (SECL) No.

ITEM

CONTENTS

LIFE

MODEL NAME

Packing Unit

REMARK

1

Drum

OPC Drum

x1

250K

SD-360DR

6

2

Developer

Developer

(1.0Kg ) x10

250K ( x 5 )

SD-360MD

1

Two packs should be changed in replacement. (SD-360ND) x 10 = SD-360MD

3

Toner

Toner Cartridge

(0.93Kg ) x10 28K ( x 10)

SD-360MT

1

(SD-360NT) x 10 = SD-360MT

Upper Heat Roller Kit

Upper Heat Roller Upper Separation Pawl

x1 x4

500K

SD-360UH

5

Lower Heat Roller Kit

Lower Heat Roller Lower Separation Pawl

x1 x4

250K

SD-360LH

5

x 10

125K

SD-360KA

6

125K Maintenance Kit Cleaner Blade Waste Toner Bottle Upper Cleaning Roller Lower Cleaning Roller

x2 x1 x1 x1 x1

250K

7

250K Maintenance Kit Drum Separation Pawl Charging Plate Unit Toner Receiving Seal DV Side Seal F/R CL Side Seal F/R

8

Staple Cartridge

x5

5000Staple ( x 5 ) SD-LS20

4 5

Staple Cartridge

5

SD-360KB 5

2–3

10

For SD-2075/3075, SF-S53 (SD-SC20) x 5 = SD-LS20

SD-2060 SUPPLIES LIST (SEEG, SUK) No. 1

ITEM

CONTENTS

Drum

OPC Drum

Developer

Developer

LIFE 250K

x1

(1.0Kg ) x 10 250K ( x 5 )

MODEL NAME

Packing Unit

SD-360DR

6

49 74019 05178 9

1

49 74019 05179 6 (49 74019 051857 x 10)

Two packs should be changed in replacement. (SD-360DV) x 10 = SD-360LD)

(SD-360T) x 10 = SD-360LT)

SD-360MD

2

Toner

Toner Cartridge (0.93Kg) x 10 28K ( x 10)

SD-360MT

Upper Heat Roller Kit

Upper Heat Roller Upper Separation Pawl

x1 x4

500K

SD-360UH

5

49 74019 05189 2 (49 74019 051864 x 10) 49 74019 05181 9

Lower Heat Roller Kit

Lower Heat Roller Lower Separation Pawl

x1 x4

250K

SD-360LH

5

49 74019 05182 6

125K Maintenance Kit Cleaner Blade Waste Toner Bottle Upper Cleaning Roller Lower Cleaning Roller 250K Maintenance Kit Drum Separation Pawl Charging Plate Unit Toner Receiving Seal DV Side Seal F/R CL Side Seal F/R Staple Cartridge Staple Cartridge

x1 x1 x1 x1 x2 x1 x1 x1 x1 x5

125K

SD-360KA

3 4 5

6

7

8

EAN NUMBER

1

REMARK

49 74019 05183 3 5

250K

SD-360KB

49 74019 05184 0 5

5000Staple ( x 5 ) SD-LS20

For SD-2075/3076, SF-S53 (SD-SC20) x 5 = SD-LS20

10

SD-2060 SUPPLIES LIST (Asia, Latin America) No.

ITEM

CONTENTS

LIFE

MODEL NAME

Packing Unit

REMARK

1

Drum

OPC Drum

x1

250K

SD-360DR

6

2

Developer

Developer

(1.0Kg ) x10

250K ( x 5 )

SD-360CD

1

Two packs should be changed in replacement. (SD-360ND) x 10 = SD-360CD

3

Toner

Toner Cartridge

(0.93Kg ) x10 28K ( x 10)

SD-360CT

1

(SD-360ST) x 10 = SD-360CT

Upper Heat Roller Kit

Upper Heat Roller Upper Separation Pawl

x1 x4

500K

SD-360UH

5

Lower Heat Roller Kit

Lower Heat Roller Lower Separation Pawl

x1 x4

250K

SD-360LH

5

x1 x1 x1 x1

125K

SD-360KA

6

125K Maintenance Kit Cleaner Blade Waste Toner Bottle Upper Cleaning Roller Lower Cleaning Roller

x2 x1 x1 x1 x1

250K

7

250K Maintenance Kit Drum Separation Pawl Charging Plate Unit Toner Receiving Seal DV Side Seal F/R CL Side Seal F/R

8

Staple Cartridge

x5

5000Staple ( x 5 ) SD-LS20

4 5

Staple Cartridge

5

SD-360KB 5

2–4

10

For SD-2075/3076, SF-S53 (SD-SC20) x 5 = SD-LS20

SD-2060 SUPPLIES LIST (SCA, SCNZ, Middle East, Africa)) No.

ITEM

CONTENTS

LIFE

MODEL NAME

Packing Unit

REMARK

1

Drum

OPC Drum

x1

250K

SD-360DM

6

2

Developer

Developer

(1.0Kg ) x10

250K ( x 5 )

SD-360LD

1

Two packs should be changed in replacement. (SD-360DV) x 10 = SD-360LD

3

Toner

Toner Cartridge

(0.93Kg ) x10 28K ( x 10)

SD-360LT

1

(SD-360T) x 10 = SD-360LT

Upper Heat Roller Kit

Upper Heat Roller Upper Separation Pawl

x1 x4

500K

SD-360UH

5

Lower Heat Roller Kit

Lower Heat Roller Lower Separation Pawl

x1 x4

250K

SD-360LH

5

x1 x1 x1 x1

125K

SD-360KA

6

125K Maintenance Kit Cleaner Blade Waste Toner Bottle Upper Cleaning Roller Lower Cleaning Roller

x2 x1 x1 x1 x1

250K

7

250K Maintenance Kit Drum Separation Pawl Charging Plate Unit Toner Receiving Seal DV Side Seal F/R CL Side Seal F/R

8

Staple Cartridge

x5

5000Staple ( x 5 ) SD-LS20

4 5

Staple Cartridge

5

SD-360KB 5

2–5

10

For SD-2075/3076, SF-S53 (SD-SC20) x 5 = SD-LS20

[3] PRODUCT OUTLINE 2

6

4

12 1

3

5

17 18

7

20

19

1. Appearance and structure

16 11 10 8 9

14 15

13

24 23

31

22

25

27

29

28

26

3–1

30

21

Appearance and structure 1

Original stacker

2

Copy reception tray

3

RADF

4

Operation panel

5

Original table

6

Clip tray

7

Paper feed pressure release button (Body/RADF)

8

Manual paper feed guide

9

Manual paper feed tray

F

Auxiliary tray

G

Power switch

H

Original exit section cover

I

Front cover

J

Toner collection container section

K

Left side cover

L

Toner box

M

Original alarm lamp

N

Original feed display lamp

O

Original set table

P

Original guide

Q

Paper feed tray 1 Paper feed tray 3

R

Paper feed tray descending button/lamp

S

Paper feed tray 2

T

U

Fusing section

V

Transport section open/close lever

W

Photoconductor drum

X

Main Charger

Y

Duplex tray section

Z

Developer unit and lock lever

[

Roller rotation knob

2. Operation panel

14

6

18 17

8

13 12

1

10

COPIES SELECTED

SORTER

1

1

1 1

2

(ORIGINALS) EVEN NUMBER

STAPLE SORT

3

5

2

COPIES MADE

ORIGINAL TO COPY SCROLL DISPLAY

AUTO IMAGE

SORT GROUP

4

INFORMATION REDUCTION

ENLARGEMENT

2

1

2 2

PRE-COUNT ORIGINAL

LIGHT

EXPOSURE AUTO MANUAL DARK PHOTO

100%

19

21

1

Copies selected display

2

3

DUAL PA GE COPY

CA

4

5

6

INTERRUPT

7

CLEAR ALL

S TART

ERASE

COVERS/INSERTS

1.8½x 11

EXPOSURE

AUTO

2 3

20

1

P

8½x 11 AUTO SELECT

COPY RATIO ZOOM

MARGIN S HIFT PROGRAM

100%

ODDNUMBER

2

SPECIAL MODES

READY TO COPY

2.8½x 11R 1

7

8

0

9

22

2

Covers/Inserts key and indicator

9

TRANSPARENCY/ CHANGE

CLEAR/STOP

TRAY SELECT

3.11 x 17

11

AUDIT CLEAR

23

24

3

INSERTS

C

25

16

15

Margin shift key and indicator

4

Erase key and indicator

5

Dual page copy key and indicator

6

Auto Image key

7

Message display

8

Scroll display key

9

Infornation key and indicator

F

Copies made display

G

Interrupt key and indicator

H

Program (P) key

I

Clear all (CA) key

J

Original to copy key and indicators

K

Transparancy inserts key and indicator

L

Change key

M

Zoom keys

N

Reduction, 100% and enlargement keys

O

Staple sort key and indicator

P

Sort/Group key and indicators

Q

Exposure keys

R

Tray select key

S

10-Key pad

T

Clear/stop key

U

Start key and indicator

3–2

3. Internal structure 53

54

55 25 21 51 26 27

56

64 2

62

63 1

3

63 4 65 5

18

6

58

57 7

59 60

61

8 12 13 10

9

32

11

30 29 31

44 42 43

15 28

45 47

35 36 33 37

46 38 34

40 41

48

1 4 7 F I L O R U X [ ^ a d g j m p s v â å

49

24 22 23 50 20 19

No. 2 mirror Copy lamp Blank lamp No. 5 mirror Resist roller Separation charger Suction unit Lower heat roller Upper separation pawl Paper exit separation gate Manual feed separation roller Transport roller Duplex copy tray transport roller Lower 1000-sheet tray transport roller Paper exit transport roller Reverse section transport roller Duplex copy tray transport roller Duplex copy tray paper feed belt RADF Belt drive roller RADF resist roller A RADF resist roller B RADF Belt tension roller C

2 5 8 G J M P S V Y \ _ b e h k n q t w ä ç

17 39

16 14

52

No. 3 mirror Lens unit No. 6 mirror Toner hopper Transfer charger Drum separation pawl Suction belt Heater lamps Sub cleaning roller Manual feed takeup roller Transport roller 2000-sheet tray paper feed belt Upper 1000-sheet tray transport roller Lower 1000-sheet tray paper feed belt Fuser transport roller Reverse section transport roller Lower cleaning roller Lower cleaning roller RADF transport belt RADF paper feed roller RADF Belt tension roller A AE sensor

3–3

3 6 9 H K N Q T W Z ] . c f i l o r u é à

No. 1 mirror Main charger unit No. 4 mirror Developer unit Photoconductor drum Cleaner unit Upper heat roller Lower separation pawl Fuser thermistor/thermostat Manual paper feed roller Transport roller 2000-sheet tray transport roller Upper 1000-sheet tray paper feed belt Paper exit transport roller Decurling belt Duplex copy tray transport roller Upper cleaning roller Paper exit roller RADF Belt follower roller RADF takeup roller RADF Belt tension roller B

4. Clutches and solenoids 26

24

25

9

18

3

19

2

17

22 10

4

8 11 23 12

21

1 2 3 4 5 6 7 8 9 F G H I J K L M N O Q R S T U V W

Signal name TRC1 TRC2 RRC TBC1 TBC2 TBC3 DBC DTRC DGS1 MPFC TVVS1 TBVS1 TVVS2 TBVS2 TVVS3 TBVS3 MPFS PSPS PSBRK DVVS DBVS DGS2 DSS DTB DRSOL DFSS

14

27

16

13

Name Transport roller clutch 1 Transport roller clutch 2 Resist roller clutch Paper feed belt clutch 1 Paper feed belt clutch 2 Paper feed belt clutch 3 Duplex copy paper feed belt clutch Duplex copy transport roller clutch Paper exit/reverse select solenoid 1 Manual paper feed clutch Paper feed suction valve solenoid 1 Paper feed blower valve solenoid 1 Paper feed suction valve solenoid 2 Paper feed blower valve solenoid 2 Paper feed suction valve solenoid 3 Paper feed blower valve solenoid 3 Manual paper feed solenoid Drum separation pawl solenoid Transport brake clutch Duplex copy suction valve solenoid Duplex copy blower valve solenoid Duplex copy reverse gate solenoid 2 Original stopper solenoid (RADF) original transport brake clutch (RADF) original reverse gate solenoid Duplex copy paper lead edge stopper solenoid

3–4

15

6

5

1

7

Function and operation Transport roller (paper feed tray) rotation Transport roller (in front of the resist roller) rotation Resist roller rotation 2000-sheet tray paper feed belt rotation Upper 1000-sheet tray paper feed belt rotation Lower 1000-sheet tray paper feed belt rotation Duplex copy tray paper feed belt rotation Duplex copy tray transport roller rotation Paper exit/reverse select gate ON/OFF Multi-copy manual paper feed roller rotation 2000-sheet tray paper feed suction valve open/close 2000-sheet tray paper feed blower valve open/close Upper 1000-sheet tray paper feed suction valve open/close Upper 1000-sheet tray paper feed blower valve open/close Lower 1000-sheet tray paper feed suction valve open/close Lower 1000-sheet tray paper feed blower valve open/close Multi-copy paper feed takeup roller pressing Drum separation pawl pressing Paper feed transport brake ON/OFF Duplex copy tray suction valve open/close Duplex copy tray blower valve open/close Duplex copy/reverse select gate ON/OFF Original stopper ON/OFF (RADF) original transport brake ON/OFF (RADF) original reverse gate ON/OFF Duplex copy paper lead edge stopper ON/OFF

5. Sensors

70

66

26

41 40

57

10

56

54

69

5

24

9

38

71

2

63

62

64 55

68

67

65

3

52

51

61

59

58

60 25

53

1

29 28

12 11

32 30 31

37 16 19

13

22

35 6

23

4

7

42

33 39

27 34

17

44

18 48 36 20 46

50 43 14 47

15

3–5

21

49

45

8

1 2 3 4 5 6 7 8 9 F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ . a b c d e f g h i j k l m n o p q r s t u v w é â ä à å ç ê ë è ï î ì

Signal name MSW DSW1 DSW2 DDSW HL ILSW PFD1 PFD2 PFD3 PSD POD MPED MPFD TLMD1 TLMD2 TLMD3 TUD1 TUD2 TUD3 DPPD DTPD DTW HPS DTBHPS DPFD LHP MBHP MHP PPD1 PPD2 PPD3 MPSD1 MPSD2 MDOP TPTD1 TLD1 TSW1 DPID DSBD PCS TNF POD2 TFD TB BOX PS21~26 TLD2 TPTD2 TSW2 PS31~36 TLD3 TPTD3 TSW3 TES TNCS TNCTR FUSUR DFMRS DTMRS DEMRS DLS1 DLS2 DWD DSD DRS DTS DWLS DWRS RDD SSW TPSW AUOD TGOD DMS

Name AC power switch Door switch 1 Door switch 2 Duplex copy tray switch Fuser interlock switch Paper feed sensor 1 Paper feed sensor 2 Paper feed sensor 3 Paper separation sensor Paper exit sensor Manual feed paper empty sensor Manual paper feed sensor Paper feed tray upper limit sensor 1 Paper feed tray upper limit sensor 2 Paper feed tray upper limit sensor 3 Paper feed tray rising sensor 1 Paper feed tray rising sensor 2 Paper feed tray rising sensor 3 Duplex copy tray paper transport sensor Duplex copy tray paper sensor Duplex copy tray width guide home position sensor Duplex copy tray rear edge guide home sensor Duplex copy tray paper feed sensor Lens home sensor No. 4/No. 5 mirror home sensor No. 2/No. 3 mirror home sensor Paper transport sensor 1 Paper transport sensor 2 Paper transport sensor 3 Manual feed tray paper size sensor Manual feed tray paper size sensor Manual feed tray open/close sensor Paper feed tray PT sensor 1 Paper feed tray lower limit sensor 1 Paper feed tray switch 1 Duplex copy tray paper entry sensor Reverse unit paper entry sensor Process control sensor Waste toner full sensor Paper exit sensor 2 Copy reception tray full sensor Waste toner bottle sensor Paper feed tray paper size sensor (in PWB) Paper feed tray lower limit sensor 2 Paper feed tray PT sensor Paper feed tray switch 2 Paper feed tray paper size sensor (in PWB) Paper feed tray lower limit sensor 3 Paper feed tray PT sensor 3 Paper feed tray switch 3 Toner empty sensor Toner density sensor Toner cartridge switch Fuser unit installation sense switch Original paper feed motor rotation sensor Original transport motor rotation sensor Original exit reverse motor rotation sensor Original length sensor 1 Original length sensor 2 Original width sensor Original set sensor Original resist sensor Original timing sensor Original length sensor (light emitting) Original length sensor (Light receiving) Original exit reverse sensor Stream mode switch Thin paper mode switch ADF open/close switch Reverse guide open/close switch Drum marking sensor

Function and operation For turning ON/OFF the AC power switch. For 38V line. L4 display at OFF. For 24V line. CH display at OFF. Duplex copy reversing section door switch For the heater lamp power line. For detection of paper entry from paper feed tray 1 For detection of paper entry from paper feed tray 2 For detection of paper entry from paper feed tray 3 For detection of paper transport after transfer and separation in the process section For detection of paper transport after fusing For detection of paper presence in the manual feed section For detection of paper entry in the manual feed section For detection of the upper limit of the paper feed tray 1 For detection of the upper limit of the paper feed tray 2 For detection of the upper limit of the paper feed tray 3 For detection of the upper limit of paper in the paper feed tray 1 For detection of the upper limit of paper in the paper feed tray 2 For detection of the upper limit of paper in the paper feed tray 3 For detection of paper entry from the switchback unit For detection of paper presence in the duplex copy tray For detection of duplex copy tray paper width guide home position For detection of duplex copy tray rear edge guide home position For detection of paper entry from duplex copy tray For detection of lens home position For detection of No. 4/No. 5 mirror home position For detection of No. 2/no. 3 mirror home position For detection of paper transport from paper feed tray 3 For detection of paper transport from each paper feed unit For detection of paper in front of the resist roller For detection of manual feed paper length For detection of manual feed paper length For detection of paper feed tray 1 lift motor rotation (Remaining paper quantity display) For detection of the lower limit of paper feed tray 1 Paper feed tray 1 ON: Paper present, OFF: Paper empty, Blink: Tray is rising or descending. For detection of paper entry to the duplex copy tray For detection of paper entry to the reverse unit Reads patch density on the photoconductor surface. For detection of waste toner full For detection of paper exit When tray full is detected, the machine will halt after completion of the current copy cycle. For detection of waste toner bottle. Paper size is judged by resistance value on the PWB. For detection of the lower limit of paper feed tray 2 For detection of paper feed tray 2 lift motor rotation (Remaining paper quantity is displayed.) Paper feed tray 2 ON: paper present, OFF: paper empty, Blink: Tray is rising or descending. Paper size is judged by resistance value on the PWB. For detection of the lower limit of paper fed tray 3 For detection of paper feed tray 3 lift motor rotation (Remaining paper quantity is displayed.) Paper feed tray 3 ON: paper present, OFF: paper empty, Blink: Tray is rising or descending. For detection of remaining toner quantity in the toner hopper For detection of toner density in the developer For detection of hopper cover open when supplying toner As the fuser unit lock is released, HL power supply line is turned off. For detection of original paper feed (A) motor rotation For detection of original feed (B) motor rotation For detection of original exit reverse (C) motor rotation For detection of original length (on the tray) For detection of original length (on the tray) For detection of original width (Judged from resistance value of VR.) For detection of original set

When originals of a same width are fed at random, the original length is detected by the light interruption sensor. For detection of an original SADF/ADF specifications mode select switch Thin paper mode/normal paper mode select switch For detection of ADF unit open/close For detection of reverse section open/close For positioning of patch formation in the process control operation

3–6

6. Motors

25 24 23 16 8

17

10 6 5 7

20

14

19

13

18

15

12

11 22

2 4

Signal name

1 9

21

3

Name

Function and operation Drives the main body.

Type

MM

Main motor

2

DM

Drum motor

Drives and rotates the photoconductor drum.

DC brushless

3

TBFM

Paper feed blower fan motor

Prevents against double paper feed

DC brushless

4

TVFM

Paper feed suction fan motor

Suction for paper transport

DC brushless

5

MIRM

Mirror motor

For mirror base scanning

DC brushless

6

LM

Lens motor

Shifts the lens base.

DC stepping

7

MBM

Mirror base motor

Shifts No. 4/5 mirror base.

DC stepping

8

DSBM

Duplex copy switchback motor

Paper transport direction selection

DC stepping

9

DBM

Duplex copy rear edge guide motor

Shifts the rear edge guide plate.

DC stepping

F

DWM

Duplex copy alignment plate motor

Shifts the alignment plate.

DC stepping

G

TM1

Toner motor 1

Supplies toner from the toner hopper to the developer unit.

DC synchronous

H

TM2

Toner motor 2

I

TLM1

Tray lift motor 1

Lifts 2000-sheet paper feed tray base plate.

DC brush

J

TLM2

Tray lift motor 2

Lifts 1000-sheet paper feed tray (upper) base plate.

DC brush

K

TLM3

Tray lift motor 3

Lifts 1000-sheet paper feed tray (lower) base plate.

DC brush

L

CFM1

Cooling fan motor 1

Cools the optical section.

DC brushless

M

CFM2

Cooling fan motor 2

N

SFM

Suction fan motor

Suction for paper transport.

DC brushless

O

PFM

Process fan motor

Ventilation around the process unit

DC brushless

P

FFM

Fusing fan motor

Ventilation around the fuser unit

DC brushless

Q

PSFM

Power supply fan motor

Ventilation around the power supply

DC brushless

R

VFM

Ventilation fan motor

Ventilation in the optics

DC brushless

S

DFM

Original feed motor (A)

Drives the original feed section

DC brushless

T

DTM

Original transport motor (B)

Transports originals.

DC brushless

U

DEM

Original exit/reverse motor (C)

Drives the original exit/reverse section.

DC brushless

1

DC brushless

DC brushless

3–7

7. PWB unit list

23

22

17

18

5

25

24

19

12

14

15

3

13 21

10 9

6 20 11

4

16

1

1 2 3 4 5 6 7 8 9 F G H I J K L M N O P Q R S T U

Name DC power circuit PWB AC power circuit PWB Process control PWB Main control PWB Operation control PWB Manual feed paper size sensor PWB Paper feed tray size sensor PWB Paper feed tray size sensor PWB Paper feed tray switch PWB Paper feed tray switch PWB Paper feed tray switch PWB Discharge lamp PWB Blank lamp PWB AE sensor PWB Light quantity correction PWB Option memory PWB Commander I/O PWB Operation PWB 1 Operation PWB 2 Paper feed tray motor PWB High voltage unit PWB RADF control PWB RADF display PWB LCD display invertor PWB LCD unit PWB

2

8

Country version 100V/200V Japan 15A/Japan 20A/ Overseas 100V/Overseas 200V 100V/200V Common Japan/SEEG/Overseas (@ ) Common Japan/Overseas AB/INCH Japan/Overseas AB/INCH Common Common Common Common Common Common Common SD-3075/3076 common Common Common Common 100V/200V 100V/200V Common Common Common Common 3–8

7

Remark DC power supply AC power input

Main body control Operation input, display control (@ )English, German, French Paper size sensing Paper size sensing Paper size sensing

Discharge lamp drive Blank lamp control Original density automatic exposure sensing Used for dirt correction For the Auditor For connection with the SF-EA13 Operation input, display Operation input, display Paper feed tray lift motor protection circuit Process high voltage developer bias voltage supply RADF control RADF display LCD display power source (for back light) Display unit

[4] PROCESS (Photoconductor drum and cleaning unit)

Dark area

Light

Dark area

HV

CTL

CGL

1. Basic theory

Base

With the indirect static copier, a plain paper is used for the copy paper. As a latent static image is formed on the surface of the photoconductor, the image is then developed into visible (toned) image using the toner. Then the toner is transferred onto the copy paper. The plain paper copier (PPC) has six basic processing steps of corona charge, exposure, development, transfer, cleaning, and discharge. The cleaning step prepares the photoconductor surface for repeated use.

Theory of photoconduction

(3) Types of photoconductors The principal materials of a photoconductor are zinc oxide (ZnO), amorphous selenium (amorphous Se), selenium alloy, cadmium sulfide (CdS), amorphous silicon (amorphous Si), and organic photoconductor (OPC).

(1) Image forming process 1

Charging

Amorphous selenium(amorphousSe)

Selenium alloy

Discharge

2

6

Exposure

Inorganic photoconductor

Zinc oxide(ZnO) Cadmium sulfide(CdS)

Photoconductor Cleaning

3

Developmewnt

Amorphous silicon(amorphous Si) Organic photoconductor

5 4

Organic photoconductor(OPC)

Described next are structures of the photoconductors we have used up to now.

Transfer

Zinc oxide (ZnO) master

1 Corona charges the photoconductor. 2 The photoconductor is exposed to light to form a static latent

Photoconductive layer (zinc oxide layer) Intermediate layer Paper Base paper Back coating paper

image.

3 Toner is attracted to the static latent image. 4 The toner on the drum is transferred onto the copy paper. 5 Toner remaining on the photoconductor (residual toner) is re-

Cadmium sulfide (CdS) drum

moved.

6 The charge remaining on the photoconductor surface (residual charge) is removed.

PET layer Micro space layer Photoconductive layer (CdS layer) Aluminum layer

(2) Photoconductor While some materials conduct electricity, others do not. Materials, therefore, can be put into three categories of conductor, semiconductor, and insulator. For these categories are conceptual, distinct classification is difficult. Generally, the following is applied. Material whose specific resistance is over 103Ωcm is called an insulator and under 10–3Ωcm is called a conductor. Those which existing between the two is normally called semiconductor. A Conductor always has the electrical conductivity, while semiconductor does not. But, it may become conductor under certain conditions. The photoconductor used in copiers is an insulator when not exposed to light, but its electrical resistance abates when exposed to light. When exposed to light, the photoconductor surface becomes conductive. Material having the property to become conductive in light (photo conductive phenomenon) is a photoconductor or photosemiconductor.

Organic photoconductor (OPC) master and drum

Charge traffic layer Charge generation layer Aluminum layer

Optical conductive layer (OPC layer)

Selenium (Se) drum Photoconductive layer (selenium layer) Aluminum layer

4–1

Characteristics of organic photoconductors

[Acceptor potential]

• • •

Permits a variety of structures (drum, sheet, belt)

• • • • •

Light weight

The resistance in the dark area of the photoconductor decreased as the electric field increases among layers. As the electric field is formed to a higher value as the photoconductor is charged, the resistance in the related layer decreases and the rate of charge retained in the photoconductor is restricted. The potential of the photoconductor in this instance is called acceptor potential which is the important factor to determine the potential contrast. To avoid giving electrical distortion in the photoconductor, charge is normally made to a level slightly lower than the acceptor potential.

Higher insulation in dark area (charge acceptability and retentivity) Permits a variety of molecular structure (allows a variety of molecular design)

Stable against humidity and temperature Safety for environment (non-pollution, unrestrained disposal) Not strong in anti-wear property

[Charge retentivity]

Not strong against light and ozone.

The time the static latent image is held by the photoconductor depends on the speed at which the potential decreases in the dark area. For this, measure the time the photoconductor potential abates to a half of the starting value in the dark area. This charge retentivity may cause a problem when the time from the exposure to the development is long. But, it may not be a problem with the machine where a series of operations from charge, exposure, and development are automated and time between processes is shorter.

(4) Characteristics of photoconductor Mentioned next is the general characteristics important to use for the photoconductive material. 1. Photo-sensitivity 3. Acceptor potential 5. Residual potential

2. Spectrum characteristics 4. Charge retentivity 6. Fatigue

[Residual potential]

[Photo-sensitivity]

When the charged photoconductor is exposed to light, the potential abruptly diminishes at first, then begin decaying relatively slowly. The potential of the photoconductor where slow decay starts is called residual potential. For a less residual potential produces a large potential contrast, low residual charge is preferable. The value of the residual potential affects largely to the development of gradual tone.

This is dependent on the attenuation speed of the potential when the photoconductor is exposed to light.

[Spectrum characteristics]

Spectrum sensitivity (relative value)

Wave length of the light differs by the kind of the photoconductor.

[Fatigue] Amorphous silicon

1.0

0.8

If charge and exposure are repeated, the phenomenon called photoconductor fatigue occurs. In other words, it appears as an increase of the decay speed of the photoconductor potential or a decrease in the charge retentivity.

Se:Te

0.6

Now, we have learned about the characteristics required for charging of the photoconductor. If charge is repeated from the corona unit in the actual operation, the corona wire is likely to be contaminated with dust, stain, and scattered toner, causing uneven corona charge. To avoid this, the corona wire needs to be cleaned well.

0.4

OPC 0.2

400

500

600

700

800

Wavelength Spectrum sensitivity

Relationship between color and wave length Light having a wave length of 380mm through 780mm can be recognized by human eyes, which is called visible light. Wave length shorter than that is called ultraviolet light and longer than that is called infrared light. The figure below shows the relationship between the wave length of light and color.

350

400

450

500

550

Yellow

Orange

Green

Blue

Ultraviolet

Violet

Blue green

600

Red 650

700

Infrared 750

800

4–2

2. SD-2060 basic process and structure •

•

Exposure

The Scorotron method is used to evenly charge the photoconductor surface to the given potential in the charge process. The corona wire regularly used is now replaced with a new corona charge mechanism that employs the 0.1mm thick stainless steel saw tooth plate, in order to suppress ozone generated when the oxide molecule in the air is ionized.

Exposure (Copy lamp)

Considering the service efficiency, the process separation mechanism is adopted.

(1) Details of image forming process

OPC layer Pigment layer

STEP 1. Charging

Aluminum (Drum)

The main corona creates a negative charge on the OPC drum surface. The surface potential of the OPC drum is controlled by the screen grid voltage to maintain at the potential equal to the grid voltage.

•

•

Dark area

When the drum surface voltage is lower than the screen grid voltage, electric charges from the main corona pass through the screen grid to reach the drum surface and charge it until the drum surface voltage becomes equal to the grid voltage.

Light area

Dark area Light area

STEP 3. Development (Bias –200V) The electrostatic latent image on the drum surface is formed into a visible image by the toner. This copier employs the two-component magnetic brush development system, where a bias voltage of –200V is applied to the carrier (MG roller) and the toner is charged positively by friction with the rotating carrier.

When the drum surface voltage reaches almost the same level as the grid voltage, electric charges from the main corona flow through the electrode of the screen grid to the high voltage unit grid voltage output circuit, thus maintaining the drum surface voltage at the same level as the grid voltage.

Carrier Toner

Screen grid

S

Main corona output section

N

N

N S -200V

Grid voltage output section

STEP 4. Pretransfer

High voltage unit

The PTCU positive corona discharge is applied to the drum surface after development to improve transfer efficiency. This weakens the attracting force between the drum and toner, improving transfer efficiency and separation efficiency.

STEP 2. Exposure (Copy lamp, mirror, lens) The optical image of an original is projected through the mirror and lenses onto the OPC drum surface by the copy lamp. The resistance of the OPC layer reduces in the bright area (light area on the original) to discharge negative charge, forming an electrostatic latent image on the drum surface. In reduction copy, the non-image area of the image is discharged by the BL (blank lamp) before exposure.

Carrier Toner

S

N

N N

S -200V

4–3

STEP 5. Transfer

STEP 8 . Discharge

The visible image on the drum surface is transferred on to the copy paper. A negative charge of the transfer corona is applied to the rear surface of the copy paper to transfer the toner on the drum surface to the copy paper.

The electric resistance of the OPC layer is reduced by radiation from the discharge lamp over the drum to remove residual charges. Discharge lamp

Toner

Paper guide Copy paper

Photo mode The photo mode is provided to make clear half-tone copy of the photo originals. In the photo mode, the grid voltage and the copy lamp voltage are lower than in the standard copy mode (the copy density of the black background is lowered) to provide half tone graduations of the copy.

High voltage unit

(Dark)

STEP 6. Separation

Normal copy mode

Though the copy paper and the drum are both negatively charged after transfer, the negative potential on the drum is higher than that on the copy paper, generating an attraction force between the drum and the copy paper. To remove the attraction force, AC corona is applied to the copy paper by the separation corona to raise the potential on the copy paper to the same level as the drum surface potential. Resultantly the attraction force is eliminated and the copy paper is separated from the drum. If the paper is not separated from the drum, the separation pawl works to separate it mechanically.

Copy density

Photo mode (The copy density of black background is decreased.)

(Light) Original density

(Dark)

Gradation is increased to provide larger expression width of half tone.

(2) Relationship between the OPC drum and light

Separation pawl

The light exposed is absorbed by the charge carrier generation layer (CGL) to generate the charge carrier and moves towards the charge carrier transport layer (CLT). The carrier reached CTL then moves towards the drum surface through CTL to neutralize the surface charge.

Copy paper

Separation corona output section AC4KV Grid

High voltage unit CTL

STEP 7. Cleaning Residual toner on the drum is collected by the cleaning blade.

CGL

Cleaner blade

Residual toner

4–4

(3) Transition of photoconductor surface potential Charge

Exposure

BL

Develop

Transfer Separate

PTC

Clean

DL

-800V Dark area

-700V

Developing bias voltage

-200V Light area

Residual potential

(4) Drum membrane decrease correction In the SD-2060, fall in sensitivity due to long use of the photoconductor drum is corrected by the copy lamp light intensity to prevent against considerable change in copy quality. The drum membrane decrease correction is performed because the drum is affected by the following:

OPC drum

Change in the thickness of the carrier transport layer (CTL). Wear from the developper. Wear from the cleaner blade.

(NEW)

(USED)

CTL

CTL

CGL

CGL

CLV

Sim46

The copy lamp voltage is increased every 16,000 seconds (4.4 hours) of drum cycling time by a value with in the software. 0

1

2

3

4

5

14

15

16

Drum rotating time (1 count/approx. 4.4h)

4–5

(5) Process Control function

2 The Process Control Sensor reads the three toner patches and the bare drum, and uses this ratio to determine the Standard level. (The Standard level is the reference value that must be achieved during Process Control to ensure proper copy quality. This Standard level is preset at the factory and is a result of the value stored in Test Command 44-4).

[Summary] The Process Control function records the density of the standard toner image formed on the photoconductor, and maintains that standard density, thereby ensuring consistent copy quality. This is accomplished by regularly checking the image density on the photoconductor surface and compensating for any deviation from the standard density by varying the MC grid bias voltage output. The exposure is also corrected according to the change in the high voltage output to stabilize the half-tone areas of the copy image.

Toner image

Surface

Surface

Toner image

Surface

Toner image

Surface

3 50V

2

50V

F

1

Bias

Time

(t)

R

Drum 1/2 rotation

2/2 rotation

3/2 rotation

1

BV 2 3

Process density sensor PWB

Main control PWB

1

PV 2 3

Density detection level setting (VR1)

CPU density judgement Light quantity correction calculation

High voltage PWB

I/O MC grid output selection

MC grid bias output (density correction) in each mode

IDPAT 1 =PV 1 x 216

BASE 1 =BV 1 x 216

IDPAT 2 =PV 2 x 216

BASE 2 =BV 2 x 216

IDPAT 3 =PV 3 x 216

BASE 3 =BV 3 x 216

PV=Patch voltage BV=Base voltage(bare drum)

PV x 216=value in TC44-4 BV

Note: The value stored in Test Command 44-4 should be 75. In the SD-2060, the absolute value of the Process Control Sensor is not used for control calculation, but the ratio of the sensor output from the bare drum and the sensor output from the toner patch is used. This will allow for correct density compensation when the reflectivity of the drum is affected by dirt or drum deterioration.

(Light quantity correction)

Process Control

3 At this time the Standard level is referenced, and three possible

1 Three toner patches are developed on the photoconductor surface

conditions will exist. a If the Standard level falls between the three patch values: The proper MC grid bias voltage is determined in Fig. A.

at three different MC grid bias voltage levels. These three patches are developed using the Photo mode high voltage output calculated the last time Process Control was performed. The voltage values of the three patches are: 1. Photomode voltage (This is the center value and is referred to as Vg (P)) 2. Photomode voltage +50v (Vg (P) +50v) 3. Photomode voltage -50v (Vg (P) -50v)

Fig A PV BV

Vg(p)+50 Standard lever

Vg(p)

Vg(p)-50

Vg(p)+50

Proper MC grid bias voltage determined by process control

Vg(p)

Vg(p)-50

MC GRID VOLTAGE

MC GRID BIAS VOLTAGE

4–6

b If the range of the three developed toner patches is lower than

4 When the MC grid bias voltage is corrected by the Process Con-

the Standard level: Two more toner patches are developed with the voltage values of Vg(P)+100v and Vg(P)+150v, as shown in Fig. B. The purpose of developing two more patches is to bring the toner patch range up to the Standard level. If the toner patch range is still not at the Standard level, two more toner patches are developed with the voltage values of Vg(P)+200 and Vg(P)+250. If still another step is required, the toner patches are developed with the voltage values of Vg(P)+300 and Vg(P)+350. If the Standard level is achieved during any of these steps, the proper MC grid bias is determined, and the toner patch process is discontinued. If the Standard level is still not achieved after these four sets of toner patches (1 set of 3 patches and 3 sets of 2 patches), then an F2-35 condition will occur.

trol Sensor, the corresponding light quantity is also calculated to control the copy lamp output. Process Control timing In the SD-2060, Process Control is performed at the following intervals: 1 When the power switch is turned on. 2 When the accumulated copy time reaches 30 minutes. If the timer reaches 30 minutes during copying, Process Control is performed during copying. If the timer reaches 30 minutes after copying, Process control is performed during the next copy preliminary rotation. 3 When the Stand-by time reaches 1 hour. Process control is performed during the next copy preliminary rotation. 4 When Test Command 46 is performed.

Fig B PV BV

Vg(p)+250

Step3

Vg(p)+200 Standard lever

Vg(p)+150

Step2

Vg(p)+100 Step1 First 3 patches

Vg(p)+50

Step1 - 3patches developed Step2 - 2patches developed Step3 - 2patches developed Step4 - (Not needed in this case) IF needed-2patches developed

Vg(p)

Vg(p)-50

Proper MC grid bias voltage determined by process control

MC GRID VOLTAGE

c If the range of the three developed toner patches is higher than the Standard level: Two more toner patches are developed with the voltage values of Vg(P)-100v and Vg(P)-150v, as shown in Fig. C. The purpose of developing two more patches is to bring the toner patch range down to the Standard level. If the toner patch range is still not at the Standard level, two more toner patches are developed with the voltage values of Vg(P)-200 and Vg(P)250. If still another step is required, two more toner patches are developed with the voltage values of Vg(P)-300 and Vg(P)350. If the Standard level is achieved during any of these steps, the proper MC grid bias is determined, and the toner patch process is discontinued. If the Standard level is still not achieved after these four sets of toner patches (1 set of 3 patches and 3 sets of 2 patches), then an F2-35 condition will occur.

Fig C PV BV

Step1

Vg(p)+50 First 3 patches

Vg(p) Vg(p)-50

Step2

Vg(p)-100

Standard lever

Step3

Vg(p)-150

Step1 - 3patches developed Step2 - 2patches developed Step3 - 2patches developed Step4 - (Not needed in this case) IF needed-2patches developed

Vg(p)-200 Vg(p)-250

Proper MC grid bias voltage determined by process control

MC GRID VOLTAGE

4–7

4 Operation of process control 3 toner patches are developed on the drum at the following levels 1) Photo mode voltage Vg(P) 2) Vg(P) +50V 3) Vg(P) -50V

*Vg(P) : Grid voltage output in photo mode (Center value of first 3 patches)

Is the standard level within the range of these 3 toner patches

No

Lower

Is the toner patch range higher or lower than standard level

Higher

2 additional toner patches are developed at the following levels 1) Vg(P) +100V 2) Vg(P) +150V

2 additional toner patches are developed at the following levels 1) Vg(P) -100V 2) Vg(P) -150V

Is the standard level within the range of these 2 toner patches

Is the standard level within the range of these 2 toner patches

Yes

No

No

2 additional toner patches are developed at the following levels 1) Vg(P) +200V 2) Vg(P) +250V

2 additional toner patches are developed at the following levels 1) Vg(P) -200V 2) Vg(P) -250V

Is the standard level within the range of these 2 toner patches

Is the standard level within the range of these 2 toner patches

Yes

No

Yes

Yes

No

F2-35 Trouble (It can make copies with last correction level) Proper MC GRID bias voltage is obtained

Drum marking In the SD-2060, a toner patch image is formed in the same position on the photoconductor drum surface to improve the accuracy of the process control. A marking is provided on the drum, and the marking is sensed before forming a toner patch image. If the marking is not sensed, the machine stops its operation and indicates "F2-32" trouble. (This is for Japan/SEC specifications. For the other destinations, the machine does not stop.)

F R

4–8

(1) Setting the reference value for optical system correction.

3. Basic structure Photoconductor drum:

The 100mmφ OPC drum is used.

Blank lamp:

The non-image area is exposed by the light from the blank lamp to erase the positive potential outside the drum CTL. Discharge lamp: Eight bulbs cast light over the drum surface to erase the positive potential in CTL.

Cleaning mechanism:

1 Clean the optical system at every maintenance. Reference plate (Glass holder)

Table glass

The cleaning blade removes the toner remaining on the drum surface. The blade always rests on the drum surface. Sensor

Main corona:

The saw tooth corona charge method is used. Use of the screen grid maintains the even charge potential over the photoconductor surface.

Enforced separation mechanism:

Using two separation pawls, any copy paper that adheres to the drum surface is forced to separate from the drum surface.

Waste toner transport mechanism:

To enhance the toner transport efficiency, toner backup is avoided by setting the waste toner transport path downward.

CPU reference value registration

2 Perform Simulation 44-3. (The previous data are cleared.) Light is emitted from the copy lamp at 70V to the reference white plate provided in the optical system unit, and the sensor output for the reflected light is registered.

4. Optical system dirt correction

(2) Dirt correction

In the SD-2060, exposure density is corrected by changing the copy lamp light quantity depending on dirt in the optical system (the copy lamp unit, No. 1 mirror, No. 2 mirror, No. 3 mirror). The optical system dirt correction is performed as follows:

Reference plate (Glass holder)

Reference plate (Glass holder)

Table glass

Table glass

Copy lamp light quantity correction

Sensor

Copy lamp light quantity correction

CPU reference value light quantity judgment Light quantity output selection

Sensor

CPU reference value light quantity judgment Light quantity output selection

4–9

1 Correction is made when the power is turned on. 2 Light is emitted from the copy lamp at 80V, 75V, 70V, .... 45 to the reference white plate provided in the optical system unit, and the copy lamp voltage which is the reference value is abtained.

3 The ratio of the obtained copy lamp voltage to the copy lamp voltage (70V) at registration is calculated to correct the exposure copy lamp voltage in each mode.

4 – 10

2. Structure

[5] DEVELOPING UNIT

1

1. Basic theory

2

(1) Two-component developer Two component developer consists of toner and carrier, and is usually called developer. The carrier is a media that applies toner to the static latent image on the photoconductor. As the carrier is stirred with the toner, the friction that occurs charges it to positive or negative potential. Because over time, the developer fatigues and affects its characteristics that deteriorates the copy quality, it needs to be replaced at a given period.

4

5

(2) Two-component magnetic brush development

No.

A rotary, non-magnetic sleeve is provided over the magnet roller which rotates during the copy cycle. A magnetic brush is formed with the carrier on the sleeve surface by magnetic force, which allows toner to be attracted to the latent electrostatic image on the photoconductor.

Name

1

Developer magnetic roller

Magnetic brush is formed with the carrier by a magnetic force.

2

Developer doctor plate

A plate employed to limit the height of the magnetic brush.

3

Developer stirring roller

Carrier within the developing unit is stirred to distribute the toner evenly.

4

Developer transport roller

The toner fed from the toner hopper is supplied to the stirring unit.

5

Toner density sensor

Used to detect the density of the toner contained in the developer.

(3) Developing bias voltage When the photoconductor is exposed to light, the surface potential (voltage) of the photoconductor is not removed completely and remains as a residual potential. Therefore, the toner adhered to the photoconductor by the residual potential creates background in the non-image areas. To prevent this, a voltage of the same charge as the photoconductor surface and which is higher than the residual potential is added to the magnetic roller to avoid the toner from remaining on the photoconductor surface.

Residual potential
3

3. Operation

MG roller

When the SD-2060 power is turned on, the machine goes into the warmup mode. When the fusing temperature reaches a certain level, the drum drive motor rotates. The developer unit is driven by the main motor via the main drive unit. Ratio of the carrier and the toner within the developing unit is monitored by the toner density sensor as a change in the magnetic transmission rate and the voltage is sent to the analog input line of the CPU of the main board. In the CPU, the input voltage level is monitored and the main motor and the toner motor is controlled until the optimum density is obtained. Then the toner is supplied, transported, and stirred.

+ + + +

Toner Carrier

DV BIAS -200V

Developing bias voltage

5–1

[6] PAPER FEED/TRANSPORT SECTION

This clutch synchronizes the lead edge of the image data on the drum surface with the lead edge of the copy paper.

1. Basic specifications

Transport brake clutch (PSBRK) Paper feed timing is very important to cope with the copy speed of 60 sheets/min. To prevent against variations on rising (ON) of the resist roller, this brake clutch is turned off after the resist roller drive power has been stabilized. In this manner the paper transport timing is stabilized.

The SD-2060 employs a paper tray lifting system in each paper feed section to hold a large quantity of papers in a compact space, and an air paper feed system to feed paper, preventing against double feed and/or smudging. If paper of the same size and same weight are set in paper feed trays 1 ~ 3, when paper is emptied from one of the trays, the continuous paper feed function switches automatically to another paper tray. After image transfer, the paper is separated from the drum surface and sent to the fusing section by the transport belt. The transport section is equipped with the paper separation sensor (PSD) which senses separation of the paper and is utilized to make the drive timing of the duplex gate solenoid (DGS1) after fusing in the duplex copy mode.

Duplex copy blower duct:

Blows air to the paper in the duplex copy tray to feed the paper without double feed. (DVBS)

Sensor:

Paper feed sensor (PFD1 ~ 3, DPFD) Paper transport sensor (PPD1 ~ 3)

(3) Manual multi paper feed section

2. Basic composition

Paper feed takeup roller:

When the manual paper feed solenoid (MPFS) is turned on, the takeup roller simultaneously drops on the paper and feeds only the top sheet of paper. In the paper feed roller section, the reverse roller with the torque limiter is provided to separate the paper without double feed.

Sensor:

Paper size sensor

(1) Paper feed tray section (4) Suction section

Paper feed belt: Four belts are provided in the air paper feed unit and rotation drive is obtained from the belt drive clutch (TBC). Air paper feed unit:

Switch sensor: (No. 1 tray)

(No. 2 tray)

(No. 3 tray)

Composed of the suction duct unit and the blower duct unit. When the suction valve solenoid (TVVS) is turned on, the suction duct unit pulls the paper from the top of the stack in the tray to the paper feed belt. When the blower duct valve solenoid (TBVS) is turned on, the blower duct unit blows air to the paper in the tray to feed a paper without double feed.

Transport belt:

2 pcs. of transport belts in the suction section.

Sensor:

Paper separation sensor (PSD)

(5) Fusing section Fusing roller:

Upper heat roller Lower heat roller

(The surface is teflon-coated.) (Silicone rubber is used.)

Cleaning roller: The upper cleaning roller employs an oil tank system to remove dirt (toner and paper powder) on the upper heat roller surface for smooth separation of paper, increasing the lifetime of the heat roller.

Upper limit sensor (TLMD1) Lift motor rotation sensor (TPTD1) Lower limit sensor (TLD1) Tray switch (TSW1) Tray rising sensor (TUD1)

Lower cleaning roller, paper dust removing roller

Upper limit sensor (TLMD2) Lower limit sensor (TLD2) Tray switch (TSW2) Tray rising sensor (TUD2) Paper size sensor (PS21 ~ 26)

Separation pawl:

Four separation pawls in the upper side and four in the lower side.

Fusing temperature control:

The thermistor and the thermostat are provided to control fusing temperature.

Switch and sensor:

Fuser interlock switch (HL ILSW) Heater lamp supply AC power "ON/OFF" switch Fuser unit installation sense switch (FUSUS) To protect the heater lamp power line connector, this switch is turned on to cut AC power supply when the fuser unit lock is released.

Upper limit sensor (TLMD3) Lift motor rotation sensor (TPTD3) Lower limit sensor (TLD3) Tray switch (TSW3) Tray rising sensor (TUD3) Paper size sensor (PS31 ~ 36)

Paper exit sensor (POD) Transport belt:

In the duplex copy mode, the copy paper is curled forcibly after it is discharged from the fusing section to prevent against misfeeding in the duplex copy tray.

Solenoid:

Duplex copy gate solenoid (DGS1)

(2) Transport unit Clutches:

(Length: MPSD1, 2) (Width: PS1 ~ 6)

Transport roller clutch (TRC1) Used for transporting papers from No. 2 and No. 3 trays. Transport roller clutch (TRC2) Provided in front of the resist roller. The paper buckles in the resist roller section to prevent against skew feeding (Simulation 51-02). Used for feeding and transporting papers from No. 1 tray, the duplex copy tray, and the manual feed multi tray, and for transporting papers which are fed from No. 2 or No. 3 tray. Resist roller clutch (RRC) 6–1

Rear edge plate:

(6) Paper exit/reverse section Switch sensor:

Duplex copy reversing section door switch (DDSW) Paper exit sensor 2 (POD2) Copy receive tray full sensor (TFD)

Motor:

Reversing motor (The reversing roller speed is varied: 400 mm/sec for transport from the fuser unit to the reversing section, and 1000 mm/sec for transport from the reversing section to the duplex copy tray. This is in order to prevent against paper overlap in the reverse section during continuous copying.)

Solenoid:

The paper rear edge position is determined by the rear edge plate drive motor (DBM). The duplex copy mode is selected with the operation key and copying is started. At the timing of the initial rising of the paper transport clutch (TBC1) signal, the rear edge plate moves from its home position according to the copy paper size (length).

Paper feed belt: Three belts are provided in the air paper feed unit to provide rotation drive power with the belt drive clutch (DBC). Air paper feed unit:

Duplex copy reversing section gate solenoid (DGS2)

(7) Duplex copy tray section Alignment plate: Aligns papers with the alignment plate drive motor (DWM). The alignment plate operates every time a paper enters according to the duplex copy tray paper entry sensor (DPID) signal. When the duplex copy mode is selected with the operation key and copying is started, the alignment plate moves from the home position (DTWHP) according to the copy paper size (width).

3. Basic operations (1) Air paper feed The SD-2060 has two fan motors: one for suction and the other for blowing in air paper feed, preventing against paper feed trouble due to changes in atmospheric pressure. The figure below shows the air paper feed ducts and air flow.

6–2

Composed of the suction duct unit and the blower duct unit. Different from other paper feed tray units, in the duplex copy tray, papers are fed from the bottom. Therefore, the paper lead edge stopper mechanism is provided. The suction duct unit pulls the paper from the bottom of the stack onto the paper feed belt when the suction valve solenoid (DVVS) is turned on. The blower duct unit is incorporated in the transport unit.

(2) Operations at power "ON" Copy start key ON (Fan motor rotates)

When the power switch of the SD-2060 is turned on, the paper feed tray lift-up motor (TLM) rotates regardless of paper presence in the paper feed tray, and the tray is lowered until the lower limit sensor (TLD) senses the lower limit. When the lower limit is sensed, the paper feed tray lift-up motor (TLM) lifts up the tray again until the tray is sensed by the tray rising sensor (TUD) or the upper limit sensor (TLMD1). If the tray is sensed by the upper limit sensor, it is judged as paper empty in the tray and the tray is lowered again.

TBVS,TVVS,PSBRK"ON" (Optical system initial operation)

TRC.2"ON"

PFD"ON"

TLM rotation(descend)

Power "ON"

(Optical system copy lamp ON)

TBC.1"ON"

No

Yes

TVVS,TBC.1"OFF" TLD sense

No

PPD.2"ON"

Yes

(Optical system N o feed start)

Yes

Second time

No

PPD.3"ON"

No

Paper jam

TLM rotation(ascend) No

TUD sense

No

TLMD1 sense

Yes TRC.2"OFF"

Yes

Yes

Yes PFC IN"ON"

TLM stop

No

No timing signal input from the optical system

Yes TRC.2"ON"

(3) Paper feed operation from the paper feed tray (No. 1 tray)

RRC"ON"

When the Start key is pressed, the paper feed (suction, blowing) fan motors rotate and the valve solenoids are turned on to pull the paper from the top of the stack up to the paper feed belt. When the air pressure in the air duct is stabilized, the paper feed belt clutch (TBC1) and the transport clutch (TRC2) are turned on to transport the paper to the resist roller section.

PSBRK"OFF"

Copy paper transport start

6–3

The paper is warped with the time log set by simulation No.51-02(B)

(4) Paper feed operation from the manual multi tray When Start key is pressed, the optical system initial operation is performed. The copy lamp lights up and at the same time the manual paper feed solenoid (MPFS) turns on. The takeup roller descends to feed the paper to the paper feed roller. The manual paper feed clutch (MPFC) and the transport clutch (TRC) turn on to transport the paper to the resist roller section.

Copy start key ON

PSBRK"ON"

(Optical system initial operation)

MPFS"ON"

(Optical system copy lamp ON)

MPFC"ON"

MPFD"ON"

No

Yes

MPFS"OFF",TRC.2"ON"

PPD.2"ON"

No (Optical system feed start)

Yes

PPD.3"ON"

No

Paper jam

Yes TRC.2"OFF" Yes

PFC IN"ON"

No

Yes TRC.2"ON" RRC"ON" PSBRK"OFF"

Copy paper transport start

6–4

No timing signal input from the optical system The paper is warped with the time log set by simulation No.51-02(A)

In this case, the paper exit/reverse switch solenoid (DGS1) is already ON. (If the duplex coy mode is specified, DGS1 is turned on simultaneously with copy start.) When the reversing unit paper entry sensor (DSBD) senses the paper rear edge, the reversing gate solenoid 2 (DGS2) turns on. The duplex copy switchback motor reverses its rotation and rotates at a high speed to feed the paper to the duplex copy tray.

(5) Paper transport operation to the duplex copy tray After copy image transfer, the paper is separated from the photoconductor and fed to the fusing section. After fusing, when the paper exit sensor (POD1) turns on, the duplex copy transport roller clutch turns on simultaneously to feed the paper from the fusing section through the paper entry guide in the duplex copy tray to the reversing unit.

Copy paper transport start

Transfer,separation

PSD"ON"

Yes Fusing

POD"ON"

Yes DTRC"ON"

DSBD"ON"

Yes

DSBD"OFF"

Yes DGS.2"ON"

DPPD"ON"

Yes

DPID"ON"

Yes Alignment start

6–5

Paper jam

(6) Paper feed operation from the duplex copy tray When the back of the copy paper is totally copied and it is collected in the duplex copy tray, the front surface copying is started. Paper feed operation is, however, started only when the air pressure in the air paper feed suction duct is stabilized.

Copy start key ON

(Optical system initial operation)

DBVS,PSBRK"ON" DVVS"ON"

(Optical system copy lamp ON)

DBC"ON"

TRC.2"ON"

DPFD"ON"

No

Yes DVVS,DBC"OFF"

PPD.2"ON"

No

(Optical system feed start)

Yes

PPD.3"ON"

No

Paper jam

Yes TRC.2"OFF" Yes

PFC IN"ON"

No

Yes TRC.2"ON"

RRC"ON"

PSBRK"OFF"

Copy paper transport start

6–6

No timing signal input from the optical system The paper is warped with the time log set by simulation No.51-02(E)

[7] OPTICAL SECTION 1. General The SD-2060 is composed of a fixed focus lens and six mirrors. The lens and the mirrors are moved by the stepping motor to positions according to the magnification ratio of reduction, normal, or enlargement copy. magnification ratio is changed from 0.5 to 2.0 in 151 steps by 1%. The six mirrors realizes a compact design. The slit exposure system with the moving light source is employed. Copy image density can be controlled by changing light quantity of the copy lamp.

The automatic exposure sensor is provided to sense density of the original and the copy lamp light quantity is controlled by the main circuit to provide even copy image.

2. Basic composition 15

18

10

4

11 2

5

17 3

1

19

9

20 14

16

7

6 8

1 4 7 F I L O

Copy lamp No. 2 mirror No. 4 mirror Mirror base B unit Lens drive motor Mirror base home position sensor Automatic exposure sensor

2 5 8 G J M P

12

Reflector No. 3 mirror No. 5 mirror Copy lamp unit No. 4, No. 5 mirror base drive motor Lens home position sensor

3 6 9 H K N

13

No. 1 mirror Lens No. 6 mirror Mirror base C unit Mirror motor Mirror home position sensor

Optical system dirt sensor

(1) Original table

(5) Lens home position sensor (LHPS)

The original table is fixed, and an original is set to the left center.

This sensor is used to sense the lens position. The output signal of this sensor serves as the basic signal to control the copy magnification ratio.

(2) Copy lamp 100V system 85V 220W 200V system 170V 260W

(6) No. 4, No. 5 mirror base home position sensor (MBHPS) This sensor is used to sense mirror base C (No. 4, No. 5 mirrors). The output of this sensor serves as the basic signal to control the copy magnification ratio.

(3) Mirror Six mirrors are used. No. 1 mirror is attached to copy lamp unit, No. 2 and No. 3 mirrors to mirror base B, No. 4 and No. 5 mirrors to mirror base C. Mirror bases A and B are scanned when copying. Mirror base C is used to change the distance between an original and the photoconductor in reduction or enlargement copy.

(7) Lens base The lens are mounted to this base, which is moved in the paper feed direction for reduction copy and in the paper exit direction for enlargement copy.

(4) Lens (Fixed focus lens) • Construction: 1 group 4 lenses • Brightness: F5.6 • Focal distance: 220mm ±1%

(8) Lens slide shaft This shaft is used to control optical axis of the lens in reduction or enlargement copy. The lenses follow on the slide base shaft.

7–1

(9) Lens drive wire

(23) Blank lamp operation

The lens drive wire is used to move the lens base.

No. 4 and No. 5 mirrors are attached to mirror base C. Mirror base C is moved by the mirror base drive motor to adjust the distance between an original and the photoconductor in reduction or enlargement copy.

When a reduction image is copied on a large size paper in reduction copy, the outside area becomes black. In another copy mode, electric charges remain on the outer area of the original image and toner is attracted to the area. To discharge this, light is radiated on the drum by the blank lamps to prevent against adhesion of toner in the outer area of the image. The lead edge void is also accomplished using the blank lamp. The void width can be adjusted by the diagnostic function.

(11) Mirror base C (No. 4, No. 5 mirrors) drive wire

(24) Optical system dirt sensor

This wire is used to move mirror base C (No. 4, No. 5 mirrors).

(12) Mirror motor

The optical system dirt sensor senses dirt in the light paths of No.1 ~ No.3 mirrors, and controls the copy lamp intensity to provide good copies.

The mirror motor is a DC servo motor used to move mirror base A and mirror base B. Its rotation is adjusted according to each magnification ratio.

3. Basic operation

(10) Mirror base C

(Relation between an original, the lenses, and images in each magnification ratio) Normal copy: The distance between the original surface set on the table glass and the lens is adjusted to the distance between the lens and the exposure surface of the photoconductor to make a normal copy.

(13) Mirror home position sensor (MHPS) This is a transmission type sensor used to sense the home position of mirror base A.

(14) Mirror base B No. 2 and No. 3 mirrors ar attached to mirror base B, which is scanned by the mirror motor.

(15) Copy lamp unit This is composed of No. 1 mirror, the thermostat, the copy lamp, the exposure adjusting plate, the reflector, and the AE sensor, and is scanned by the mirror motor.

(16) Thermostat The thermal fuse is provided on the reflector to prevent against abnormal temperature rise in the optical system. In case of an abnormal temperature rise, it turns off the power source of the copy lamp. 100V system 140 ˚C 200V system 140 ˚C

Enlargement: The lens moves closer to the original compared to it’s position during normal copying, and the distance between the original surface and the lens is shortened. No. 4 and No. 5 mirrors go far from the lens and the distance between the lens and the exposure surface of the photoconductor becomes greater. The distance between the original and the exposure surface of the photoconductor becomes greater than in the normal copy.

(17) Reflector Light from the copy lamp is reflected by the reflector onto an original.

(18) Exposure adjusting plate There are three exposure adjusting plates attached to mirror base A to adjust exposure balance between the front and the rear sides.

(19) Mirror base drive wire The mirror motor power is transmitted to mirror base A and mirror base B to scan the mirror base by means of this wire.

(20) Mirror base (No. 4, No. 5) drive motor This is a stepping motor used to drive mirror base C.

(21) Lens drive motor This is a stepping motor used to change lens positions.

(22) AE sensor The AE sensor senses the original density by the magnitude of light reflected from the original. The center area of about 100mm wide in the mirror base scan direction is the light measuring area. The elements are photo diodes.

7–2

Reduction:

The lens moves closer to the photoconductor compared to it’s position during normal copying, and the distance between the original surface and the lens becomes greater. The distance between the lens and the exposure surface of the photoconductor becomes shorter. No. 4, 5 mirror and the mirror base go far from the lens. The distance between the original and the exposure surface of the photoconductor becomes greater than in normal copy.

4. Optical system dirt/copy lamp deterioration correction [General] In the SD-2060, decrease in light quantity due to the optical system dirt or the copy lamp deterioration is sensed with the sensor provided in the optical system unit to correct the lamp voltage.

[Details] 1 Light is emitted from the copy lamp at 70V to the reference white plate provided in the optical system unit, and the sensor output for the reflected light is registered.

2 When the power is turned on, the copy lamp voltage is changed from 80V, 75V, 70V, ...., and the copy lamp voltage is calculated which is the registered value of 1 .

3 The ratio of the copy lamp voltage calculated in 2 to the copy lamp voltage (70V) at registration is calculated to correct the exposure copy lamp voltage in each mode.

Mirror base scan speed Lens and mirror positions are changed to adjust the magnification ratio.

Copy paper feed direction

Mirror scan speed is changed to adjust the magnification ratio. Mirror scan speed

Drum rotating speed < Mirror scan speed

Enlargement

Lens and mirror positions are changed to adjust the magnification ratio.

Original

Reduction

7–3

[8] RADF (Reversing Automatic Document Feeder) unit 1. General The RADF unit automatically transports documents and reverses duplex documents, allowing for continuous copying. When documents of different sizes are set in the document tray, the document size is sensed by the RADF fray sensors and the appropriate copy paper size or magnification ratio is selected. If there is no copy poper paper suitable for the sensed document size and the magnification ratio, copying is terminated and the required paper size is displayed (blinking) on the display section.

(Features) 1 The employment of the step-passing of A4 (81⁄2" x 11") size paper (first paper passing, and second paper passing simultaneously with copying) together with the single-sided docunent handling and the duplex document handling capability reduces copying time.

2 Compact design, due to the folding document tray section. 3 The document width size is sensed using a potentiometer which changes its resistance with each position of the width guides. The document length is sensed using two photointerrupters.

2. Basic composition The RADF is composed of the following parts.

(1) Document tray section, paper feed section, transport section, reverse section, paper exit section

1

2

3

25

4

5

24

6

23

7

22

2

21

8

9

20

Turn roller

10 11

19 18

3

12

13

14

17

15

16

1

Document exit, reverse sensor (RDD)

4

Paper exit roller

5

Belt drive roller

6

Transport belt

7

Belt follower roller

8

Document timing sensor (DTS)

9

Resist roller A

10

Document resist sensor (DRS)

11

Paper feed roller

12

Takeup roller

13

Document set sensor (DSD)

14

Document length sensor 1 (DLS1)

15

Document length sensor 2 (DSL2)

16

Document width sensor (DWD)

17

Paper feed gate

18

Separation roller

19

Document width sensor (DWLS, DWRS)

20

Resist roller B

21

Belt tension roller A

22

Belt tension roller B

23

Document table

24

Belt tension roller C

25

Document stopper

8–1

DR gate

(2) PWB sensor/Switch/Solenoid/Motor arrangement view

3. Basic operations (1) Motor and rollers operations

No.

Code/Signal

Name

1

RADF PWB

RADF control PWB

1

2

LED PWB

Display PWB

3

DFMRS

Paper feed motor rotation sensor

4

DTMRS

Transport motor rotation sensor

5

DEMRS

Paper exit/reverse motor rotation sensor

6

DLS1

Document length sensor 1

7

DLS2

Document length sensor 2

8

DWD

Document width sensor

9

DSD

Document set detector

The paper feed motor (DFM) drives the takeup roller, the paper feed roller, the separation roller, and the resist roller. During document feeding, the paper feed roller, takeup roller, and separation roller all rotate, while the resist roller remains stationary. If the resist roller is rotating, the paper feed roller, takeup roller, and separation roller remain stationary. The paper feed roller, takeup roller, separation roller, and resist roller are each rotated individually within the same drive system. A oneway clutch is used to switch the rotating direction of the paper feed motor (DFM).

10

DRS

Document resist sensor (PBA-sensor 1)

a Operations in document feeding

11

DTS

Document timing sensor (PBA-sensor 1)

12

DWLS

Document width light emitting sensor (LED PWB)

13

DWRS

Document width light receiving sensor (PT PWB)

14

RDD

Paper exit/reverse sensor (PBA-sensor)

15

SSW

Stream mode switch

16

TPSW

Thin paper mode switch

17

AUOD

RADF open/close switch

18

TGOD

Turn guide open/close detector

19

DFM

Document feed motor

20

DTM

Transport motor

21

DEM

Document exit/reverse motor

22

DTB

Transport brake

23

DRSOL

Reverse solenoid

Paper feed motor (DFM) and rollers

Paper feed motor (DFM) normal rotation (direction A) G2

G3

G6

G7

G4

G5

Paper feed roller Takeup roller G8 G9 Separation roller Resist roller

Paper feed roller

Resist roller G4

G3

A

Paper feed motor (DFM)

G5

Take up roller G2

Separation Paper feeding roller direction

G8

G6

G9

* One way clutch b Operations in document transport Paper feed motor (DFM) reverse rotation (direction A) G2

G3

G4

G5

Resist roller G6 (Since G7 is a one-way clutch, drive power is not transmitted to the paper feed roller and the takeup roller.)

Paper feed roller

B

Resist roller G4

G3

Paper feed motor (DFM) G5

Take up roller

G2 G9

* One way clutch

8–2

G6

G8

2

Transport motor (DTM), paper exit motor (DEM), and rollers

b Operations in document reversing When the transport motor (DTM) rotates in the arrow direction (the reverse direction), the drive power of gear G1 is transmitted to gear G2, rotating shaft X in the direction of arrow A. When shaft X rotates in the direction of arrow A, gear G3 on shaft X also rotates in the direction of arrow A. The drive power of gear G3 is transmitted to gear G4, rotating the transport belt drive roller shaft and the transport belt in the direction of arrow A. Since the paper exit motor (DTM) rotates in the direction of arrow B when a document is transported, the paper exit roller and the turn roller also rotates in the direction of arrow B.

The transport motor (DTM) drives the transport belt (transport belt drive roller). It rotates in the normal direction when transporting a document, and rotates in the reverse direction when reversing the document. To switch its rotating direction, the rotating direction of the transport motor (DTM) is switched. The exit motor (DEM) drives the turn roller and the paper exit roller. Its rotating direction is not changed even when the rotating direction of transport motor (DTM) is changed. a Operations in document transport • Transport motor (DTM) G2 normal rotation (direction A) • Paper exit motor (DEM) normal rotation (direction A)

G3 G6

G4

Transport belt

• Transport motor (DTM) G2 reverse rotation (direction B)

Paper exit roller G7

• Paper exit motor (DEM) normal rotation (direction A)

Turn roller

G3 G6

G4

Transport belt

Paper exit roller G7 Turn roller

Turn roller Turn roller

G6

G7

A

Paper exit motor (DEM) G6

G5 G7

Paper exit roller

A

Paper exit motor (DEM)

Paper exit roller

A

B

G3 G2 G4

Transport motor (DTM)

Transport belt

G4 Transport belt

8–3

G2 Transport motor (DTM) G3

2. Basic composition A Original path (1) ADF mode (single copy mode) operation in the RADF (C-16)

(2) RADF mode (duplex mode) operation in the RADF (C-16)

1) Original setting

1) Original setting

2) Paper feed

2) Paper feed

3) Transport

3) Transport 4) Reverse

4) Stop (Copy) 5) Reverse transport

5) Paper exit 6) Transport

6) Paper exit completion

7) Stop (Back surface copy)

8) Reverse

9) Reverse transport

10) Transport

11) Stop (Front surface copy)

12) Paper exit

13) Paper exit completion

8–4

(3) ADF step feed mode operation in the RADF (C-16)

1) Original setting

2) Paper feed (The first original)

3) Transport (The first original)

4) Stop (The first original), paper feed (The second original)

5) Transport (The first original, the second original)

6) Stop (The first original copy), stop (The second original), paper feed (The third original)

7) Paper exit (The first original), transport (The second original, the third original)

8) Paper exit (the first original), stop (the second original), stop (the third original)

9) Paper exit (the second original), transport (the third original)

10) Paper exit completion (the second original), stop (the third original copy)

11) Paper exit (the third original)

12) Paper exit completion (the third original)

8–5

TLM1

24v

TBVS3

TVVS3

24v

24v

9–1

PNC

DGS2

CRS

CFM1

CFM2

DBVS

DGS1

DFSS

TRC1

TRC2

DVVS

PSBRK

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

DC POWER SUPPLY UNIT

DBC

24v

TBC1/TBC2/ TBC3

TVVS2

24v

24v

TBVS2

TVVS1

TBVS1

24v

24v

24v

DTRC

TLM2

24v

24v

TLM3

24v

SD2060B.D-1

5v

GND

FW

38v

24v

-24v

10v

AC

DRIVER(IC101)

TRAY MOTOR UNIT

AC POWER SUPPLY UNIT

DRIVER(IC102)

TRAY MOTOR UNIT

24v

DMB

24v

DSBM

DRIVER(IC135)

DRIVER(IC119 )

DRIVER(IC132)

DRIVER(IC122)

DRIVER(IC125)

DRIVER(IC103)

10:31 AM

TRAY MOTOR UNIT

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10v TVFM

10v TBFM

MHVG

IC219

IC234

I/O-1(IC108)

38v

38v

THVG

DRIVER(IC134)

IC221

DM

38v

SHVG

AC

M.C GRID

PTHVG

BIAS

24v

DWM

DRIVER(IC127)

IC214

IC1A,1B,1C,1 D,1E,1F

IC1

BLANK LAMP UNIT

24v

MAIN CONTROL UNIT

HIGH VOLTAGE UNIT

IC237

CPU(IC113)

Q211/214

SSR301/ TD301

COPY LAMP

DRIVER(IC133)

MM

38v

10v

MBM

24v

5v

LED

DRIVER(Q1 9,20)

IC230

24v

DTM

DRIVER(Q2,3, 15,16)

IC20

IC402

MIRROR MOTOR CONTROL UNIT(MIRROR MOTOR)

LM

24v

ADF UNIT

24v

DFM

DRIVER(Q4,5, 13,14)

IC19

CPU(IC21)

IC411

IC409

IC431

LCD DISPLAY UNIT

5v LED DISPLAY

24v

DSS

DRIVER(Q21,8 )

IC11

IC2

IC6

DRIVER(IC216)

IC227

DRIVER(IC131)

IC451

Q451,452,453

I/O-1(IC107)

OPERATION UNIT

LCD BACK LIGHT INVERTER UNIT

24v

24v

DRSOL

DRIVER(Q7)

IC28

IC6

DRIVER(IC111)

DRIVER(IC119)

DRIVER(IC130)

DRIVER(Q219/ 220/221)

DRIVER(IC128)

DRIVER(IC129)

24v

DTB

DRIVER(Q1)

IC6

24v

DEM

DRIVER(Q11,6 ,17)

IC5

IC11

HL2

IC7

HL1

SSR302 SSR303/ TD302

PSPS

SFM

MPFS

DL

PFM

FFM

AC

DHR

T2

RY301

PR(RY302)

RRC

MPFC

AC

AC

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

24v

EX3?

24v

VFM

24v

10v

24v

24v

PSFM

HRS

TLMP1/ TLMP2/ TLMP3

TM1

TM1

[9] ELECTRICAL SECTION

1. System block diagram

2. Operations at power ON

Power ON

(Note 1) When toner density level is sbove the specified level after 0.5 sec rotation of the drum motor (DM), the drum motor will stop in about 25 sec.

Main CPU initial setting I/O initial setting Memory initial setting

(Note 2) When the fusing roller temperature isabove 100˚C at power ON, the main motor (MM) will rotate for about 40 sec after the temperature control level is reached. When the fusing roller temperature is below 100˚C at power ON, the main motor will rotate for about 3 min 30 sec (Japan) or about 40 sec (Overseas) after the temperature control level is reached.

Operation control CPU reset Mirror CPU reset RADF CPU reset (Sorter control CPU reset)

Backup memory check

Interlock door check

Pass sensor check (Misfeed check)

Paper feed tray unit Descending Rising

Mirror base initial setting

Heater lamp ON (The fusing heat increases.)

Lens initial setting

(Note 2) Main motor rotation Longest: 3 min 30 sec Shortest: 40 sec

Ready lamp ON

3. Main circuit The SD-2060 main circuit is composed of the following control circuits:

• • • • • • • • • • • •

(Note 1) Drum motor rotation Longest: 2 min Shortest: 25 sec

Paper feed/transport control circuit Process control circuit Fusing control circuit Toner supply control circuit Duplex copy control circuit RADF control circuit Sorter control circuit Paper feed tray control circuit CL light quantity control circuit PPC communication control (RIC) circuit Auditor control circuit Commander control circuit

9–2

Duplex copy tray initial setting

(1) CPU (IC113) Signal list Pin No.

In/Out

H/L

1

TC

Signal name

P90/PW3/IOF10

Port

OUT

"H" PWM

Transfer charger PWM output

2

SHV

P91/PW4/IOF11

OUT

"H" PWM

Separation charger PWM output

3

BIAS

P92/PW5/IOF12

OUT

"H" PWM

Developer bias PWM output

4

MC

P93/IOF13

OUT

H

Main charger control

5

DWMA

P94/IOF14

OUT

H

Duplex alignment plate stepping motor phase A

6

DWMB

P95/IOF15

OUT

H

Duplex alignment plate stepping motor phase B

7

DWMA

P96/IOF16

OUT

H

Duplex alignment plate stepping motor phase A

8

DWMB

P97/IOF17

OUT

H

Duplex alignment plate stepping motor phase B

9

+5V (C)

Vcc

IN

—

10

FWS

P100/IOF20

IN

"H" ↑

11

DGD1

P101/IOF21

IN

"H" ON

12

BLTin

P102/IOF22

IN

"L" ↓

13

PPD/PFCin

P103/IOF23

IN

"L"/"H"

14

DBMA

P104/IOF24

OUT

—

Duplex rear plate/switchback stepping motor phase A

15

DBMB

P105/IOF25

OUT

—

Duplex rear plate/switchback stepping motor phase B

16

DBMA

P106/IOF26

OUT

—

Duplex rear plate/switchback stepping motor phase A

17

DBMB

P107/IOF27

OUT

—

18

TxD OP

P80/IOF00

OUT

"L" START

Serial out (for operation panel)

19

RxD OP

P81/IOF01

IN

"L" START

Serial in (for operation panel)

20

TxD MIR

P82/IOF02

OUT

"L" START

Serial out (for mirror control)

21

RxD MIR

P83/IOF03

IN

"L" START

Serial in (for mirror control)

22

TxD MIR

P84/IOF04

OUT

"L" START

Serial out (for finisher/sorter)

23

RxD FNS

P85/IOF05

IN

"L" START

Serial in (for finisher/sorter)

24

TxD EX

P86/IOF06

OUT

"L" START

Serial out (for RIC/commander)

25

RxD EX

P87/IOF07

IN

"L" START

Serial in (for RIC/commander)

26

GND2

Vss

IN

—

CPU power (0V), signal GND

27

SA

P120/D8

OUT

H/L

Strobe output A

28

SB

P121/D9

OUT

H/L

Strobe output B

29

SC

P122/D10

OUT

H/L

Strobe output C

30

CLinh

P123/D11

OUT

"H"

Copy lamp ON inhibit

31

BLCLOCK

P124/D12

OUT

H/L

BL clock output

32

BLDATA

P125/D13

OUT

H/L

BL data output

33

BLLATCH

P126/D14

OUT

H/L

BL latch output

34

BLBEO

P127/D15

OUT

"H"

BL enable (ON/OFF) control

35

GND2

Vss

IN

—

CPU power (0V), signal GND

36

D0

D0

IN/OUT

H/L

Data bus 0

37

D1

D1

IN/OUT

H/L

Date bus 1

38

D2

D2

IN/OUT

H/L

Data bus 2

39

D3

D3

IN/OUT

H/L

Data bus 3

40

D4

D4

IN/OUT

H/L

Date bus 4

41

D5

D5

IN/OUT

H/L

Data bus 5

42

D6

D6

IN/OUT

H/L

Data bus 6

43

D7

D7

IN/OUT

H/L

Data bus 7

44

+5V (C)

Vcc

IN

—

CPU power (+5V)

45

A0

A0

OUT

H/L

Address bus A0

46

A1

A1

OUT

H/L

Address bus A1

47

A2

A2

OUT

H/L

Address bus A2

48

A3

A3

OUT

H/L

Address bus A3

49

A4

A4

OUT

H/L

Address bus A4

50

A5

A5

OUT

H/L

Address bus A5

51

A6

A6

OUT

H/L

Address bus A6

52

A7

A7

OUT

H/L

Address bus A7

53

GND2

Vss

IN

—

CPU power (0V), signal GND

54

A8

A8

OUT

H/L

Address bus A8

55

A9

A9

OUT

H/L

Address bus A9

56

A10

A10

OUT

H/L

Address bus A10

9–3

Description

CPU power (+5V) FW zero-cross signal input Duplex gate detector (for switchback) BL timing trigger PPD3/PFCin signal monitor

Duplex rear plate/switchback stepping motor phase B

Pin No.

In/Out

H/L

57

A11

Signal name A11

Port

OUT

H/L

Address bus A11

Description

58

A12

A12

OUT

H/L

Address bus A12

59

A13

A13

OUT

H/L

Address bus A13

60

A14

A14

OUT

H/L

Address bus A14

61

A15

A15

OUT

H/L

Address bus A15

62

A16

P50/A16

OUT

H/L

Address bus A16

63

A17

P51/A17

OUT

H/L

Address bus A17

64

A18

P52/A18

OUT

H/L

Address bus A18

65

A19

P53/A19

OUT

H/L

Address bus A19

66

ANSEL1

P13/WAIT

OUT

H/L

Analog input selector 1

67

ANSEL0

P12/BREQ

OUT

H/L

Analog input selector 0

68

WDTout

P11/BACK

OUT

"H" ↑

69

WDTin

P10

IN

"H" Trouble

70

RESET

RES

IN

L

Reset input

71

POFA

NMI

IN

L

Power OFF sequence trigger interruption

72

GND2

Vss

IN

—

CPU power (0V), signal GND

73

X101

EXTAL

IN

—

CPU basic clock, crystal oscillator

74

(9.83MHz)

XTAL

IN

75

+5V (C)

Vcc

IN

—

CPU power (+5V)

76

AS

AS

OUT

L

Address strobe

77

RD

RD

OUT

L

Read

78

WR

WR/HWR

OUT

L

Write

79

BCKout

P17/LWR

OUT

H

Battery check out

80

GND2

MD0

IN

L

Operation mode control

81

+5V (Pull up)

MD1

IN

H

Mode 6: 8-bit expansion maximum mode

82

+5V (Pull up)

MD2

IN

H

Watch dog timer out Watch dog timer monitor

83

+5V (Pull up)

STBY

IN

L

Hardware standby input (+5V pulled up)

84

Vref

AVcc

IN

—

Analog power (+4.75V)

85

THS

P70/AN0

IN

—

Thermistor input (Fusing)

86

PWS/BCK2in

P71/AN1

IN

—

Manual feed width detection input/battery check voltage input 2

87

TNCS/BCK1in

P72/AN2

IN

—

Toner concentration input/battery check voltage input 1

88

TNF

P73/AN3

IN

—

Waste toner full detection (SD-2060 NOT USED)

89

PCS

P74/AN4

IN

—

Process control sensor input

90

DMS

P75/AN5

IN

—

Drum marking sensor input

91

AEDS

P76/AN6

IN

—

Optical system dirt detection

92

AES

P77/AN7

IN

—

AE sensor input

93

GND2

AVss

IN

—

Analog power (0V), signal GND

94

GND2

AVss

IN

—

Analog power (0V), signal GND

95

DCH

P57/ADTRG

OUT

H

Power OFF sequence trigger (RESET trigger)

96

E

P56/E

OUT

Pulse

97

RES FES

P54/IRQ0

OUT

L

Sorter reset out

98

CLCLOCK

P60/PW0

OUT

"L" PWM

Copy lamp clock Grid out

Enable clock output (for switchback motor)

99

GRID

P61/PW1

OUT

"H" PWM

100

RIC/C

P62/PW2

OUT

H/L

101

TxD UDH

P63/TXD

OUT

"L" START

Serial out (for UDH/RADF)

102

RxD UDH

P64/RXD

IN

"L" START

Serial in (for UDH/RADF)

103

I8

P65/SCK

IN

H/L

Matrix input I8

104

GND2

Vss

IN

—

CPU power (0V), signal GND

105

I0

P110

IN

H/L

Matrix input I0

106

I1

P111

IN

H/L

Matrix input I1

107

I2

P112

IN

H/L

Matrix input I2

108

I3

P113

IN

H/L

Matrix input I3

109

I4

P114

IN

H/L

Matrix input I4

110

I5

P115

IN

H/L

Matrix input I5

111

I6

P116

IN

H/L

Matrix input I6

112

I7

P117

IN

H/L

Matrix input I7

9–4

RIC/commander selection

(2) CPU input signal matrix

@

1:

S7

S6

S5

S4

S3

S2

S1

S0

10

DDSW in "L"

DTBHPS "H"

DTWHPS "H"

MPFD "L"

DPFD "L"

PFD3 "L"

PFD2 "L"

PFD1 "L"

11

MPSD2 "L"

MPSD1 "L"

MPED "L"

POD "L"

PSD "H"

PPD3 "L"

PPD2 "L"

PPD1 "L"

12

TSW2 "L"

TCD2 "L"

TUD2 "L"

TLMD2 "H"

TSW1 "L"

TCD3 "L"

TUD1 "H"

TLMD1 TLMD3 "H"

13

SHVGT "L"

DTPD "H"

DPID "L"

DPPD "L"

TSW3 "L"

TCD3 "L"

TCD2 "L"

TCD1 "H"

14

DSW "L"

DVCH in "L"

FUSUS in "L"

DSR_RIC

DSR_FNS "L"

CTS_RIC

CTS_COM

DSR_OP "L"

15

S80 "L"

U2 "L"

PS26 "H"

PS25 "H"

PS24 "H"

PS23 "H"

PS22 "H"

PS21 "H"

16

TBBOX "L"

TNCTR in "L"

PS36 "H"

PS35 "H"

PS34 "H"

PS33 "H"

PS32 "H"

PS31 "H"

17

EXIN1 "–"

RRC in "H"

TPTD3 Pulse

TPTD2 Pulse

TPTD3 Pulse

TLD3 "H"

TLD2 "H"

TLD1 "H"

18

PFC in "H"

TFD "H"

POD2 "L"

PNC_a "L"

MMT "H"

DMT "H"

RAMSET "L"

MDOP "L"

"H"/"L" are at the port level.

(3) CPU analog input signal 1 The AE sensor input/optical system dirt detection is independent as an analog input port. Since, however, the port for determining the input gain is common, it is impossible to read two ports at the same time. Therefore, the gain of the above two sensor inputs is first outputted, then the corresponding analog input is read.

2 ANSEL0/ANSEL1 (select port) is assigned to an independent port, allowing selection of input ports as required. 3 After a certain period (about 500 usec - 1.0 msec) from selection of the input port, the analog input is disabled. The analog data immediately after selection are disabled. Port No.

Name

P77

AES

P76

AEDS

Optical system dirt detection

P75

DMS in

Drum marking sensor input

P74

PCS in

Process control sensor input

AE sensor input

P73

TNF

P72

TNCS

BCK1 in

Not used in the SD-2060.

P71

PWS

BCK2 in

P70

THS

P70 - P72 are selected by ANSEL0/ANSEL1. (See the table below.)

ANSEL0 ANSEL1

ANSEL0

ANSEL1

P72

"L"

–

TNCS

Toner (density) control sensor input

P71

"L"

–

PWS

manual width size sensor input

P70

–

"L"

THS

Fusing temperature (thermistor) input

P72

"H"

–

BCK1 in

Battery check voltage input 1 (Main)

P71

"H"

–

BCK2 in

Battery check voltage input 2 (Option)

P70

–

"H"

Not used.

9–5

(4) I/O.1 (IC107) signal list Pin No.

Signal name

1

RTS COM

2 3

Port

In/Out

H/L

Description

PF6

OUT

Request to send (for commander)

RRCinh

PF7

OUT

"L"

+5V (C)

Vcc

IN

—

Power (+5V)

4

RES OP

PE0

OUT

"H"

Slave reset (for operation panel)

5

RES MIR

PE1

OUT

"H"

Slave reset (for mirror control)

6

RES UDH

PE2

OUT

"H"

Slave reset (for UDH/RADF)

7

FFMb

PE3

OUT

"L"

Fuser ventilation fan motor (for +10V drive)

8

FFMa

PE4

OUT

"L"

Fuser ventilation fan motor (for +24V drive)

9

TLMP1

PE5

OUT

"L"

Tray pilot lamp 1

10

TLMP2

PE6

OUT

"L"

Tray pilot lamp 2

11

TLMP3

PE7

OUT

"L"

Tray pilot lamp 3

12

GND2

Vss

IN

—

Power (0V), signal GND

13

PSPS

PB0

OUT

"H"

Separation solenoid

14

DHR

PB1

OUT

"H"

Drum heater relay

15

DL

PB2

OUT

"H"

Discharge lamp

16

PTC

PB3

OUT

"H"

Pre-transfer charger

17

SFM

PB4

OUT

"H"

Suction fan motor

18

HRS

PB5

OUT

"H"

Heat roller solenoid

19

PR

PB6

OUT

"H"

Power relay

20

PCN

PB7

OUT

"H"

Personal counter count up

21

HL2

PA7

OUT

"H"

Heater lamp 2 (sub-heater)

22

HL1

PA6

OUT

"H"

Heater lamp 1 (main heater)

23

EX2

PA5

OUT

"H"

(Reserved) Fixed to L.

24

EX1

PA4

OUT

"H"

(Reserved) Fixed to L.

25

TM3

PA3

OUT

Pulse

Toner motor 2 phase B

26

TM2

PA2

OUT

Pulse

Toner motor 2 phase A

27

TM1

PA1

OUT

Pulse

Toner motor 1 phase B

28

TM0

PA0

OUT

Pulse

Toner motor 1 phase A

29

+5V (C)

Vcc

IN

—

Power (+5V)

30

RD

RD

IN

"L"

Read input

31

WR

WR

IN

"L"

Write input

32

I/O1CS

CS

IN

"L"

I/O chip select input

33

RESET

RESET

IN

"H"

Reset input

34

GND2

Vss

IN

—

Power (0V), signal GND

35

A2

A2

IN

H/L

Address bus A2

36

A1

A1

IN

H/L

Address bus A1

37

A0

A0

IN

H/L

Address bus A0

38

D0

D0

IN/OUT

H/L

Data bus D0

39

D1

D1

IN/OUT

H/L

Data bus D1

40

D2

D2

IN/OUT

H/L

Data bus D2

41

D3

D3

IN/OUT

H/L

Data bus D3

42

D4

D4

IN/OUT

H/L

Data bus D4

43

D5

D5

IN/OUT

H/L

DAta bus D5

44

D6

D6

IN/OUT

H/L

Data bus D6

45

D7

D7

IN/OUT

H/L

Data bus D7

46

AEGAIN2

PC7

OUT

H/L

AE sensor gain 2

47

AEGAIN1

PC6

OUT

H/L

AE sensor gain 1

48

AEGAIN0

PC5

OUT

H/L

AE sensor gain 0

49

SS/FNS

PC4

OUT

H/L

Sorter/finisher selection

50

MPFS

PC0

OUT

"H"

Manual paper feed solenoid

51

MPFC

PC1

OUT

"H"

Manual paper feed clutch

52

RRCout

PC2

OUT

"H"

Resist roller clutch control Option RAM access enable

Resist roller clutch ON inhibit

53

OPRAMRE

PC3

OUT

"H"

54

DSR UDH

PG0

IN

"H"

Slave communication request (for UDH/RADF)

55

DSR MIR

PG1

IN

"H"

Slave communication request (for mirror control)

9–6

Pin No.

In/Out

H/L

56

TVMT

Signal name PG2

Port

IN

"H"

Tray vacuum fan motor trouble detection

Description

57

TBMT

PG3

IN

"H"

Tray blower fan motor trouble detection

58

GND2

Vss

IN

—

Power (0V), signal GND

59

DTR OP

PF0

OUT

"L"

Slave communication enable (for operation panel)

60

DTR MIR

PF1

OUT

"L"

Slave communication enable (for mirror control)

61

DTR UDH

PF2

OUT

"L"

Slave communication enable (for UDH/RADF)

62

DTR FNS

PF3

OUT

"L"

Slave communication enable (for sorter/finisher)

63

DTR RIC

PF4

OUT

Data terminal ready (for RIC)

64

RTS RIC

PF5

OUT

Request to send (for RIC)

(5) I/O.1 input/output signal matrix Port

1:

6

5

4

3

2

1

0

PA

Out HL1 "H"

Out VFM "H"

Out PSFM "H"

Out TM3 Pulse

Out TM2 Pulse

Out TM1 Pulse

Out TM0 Pulse

PB

Out PNC "H"

Out PR "H"

Out HRS "H"

Out SFM "H"

Out PTC "H"

Out DL "H"

Out DHR "H"

Out PSPS "H"

PC

Out AEGAIN2 H/L

Out AEGAIN1 H/L

Out AEGAIN0 H/L

Out SS/FNS_ H/L

Out OPRAME_ "L"

Out RRCout "H"

Out MPFC "H"

Out MPFS "H"

PE

Out TLMP3_ "L"

Out TLMP2_ "L"

Out TLMP1_ "L"

Out FFMa_ "L"

Out FFMb_ "L"

Out RES_UDH "H"

Out RES_MIR "H"

Out RES_OP "H"

PF

Out RRCinh_ "L"

Out RTS_COM

Out RTS_RIC

Out DTS_RIC

Out DTS_FNS_ "L"

Out DTS_UDH_ "L"

Out DTS_MIR_ "L"

Out DTS_OP_ "L"

In TBMT "H"

In TVMT "H"

In DSR_MIR "H"

In DSR_UDH "H"

PG

@

7 Out HL2 "H"

(NO USE)

(NO USE)

(NO USE)

(NO USE)

"H’/"L" are at port level.

9–7

(6) I/O.2 (IC108) signal list Pin No.

In/Out

H/L

1

TVM

Signal name PF6

Port

OUT

"L"

Tray vacuum fan motor

2

TBM

PF7

OUT

"L"

Tray blower fan motor

3

+5V (C)

Vcc

IN

—

Power (+5V)

4

DMGAIN0

PE0

OUT

H/L

Drum marking sensor gain 0

5

DMGAIN1

PE1

OUT

H/L

Drum marking sensor gain 1

6

DMGAIN2

PE2

OUT

H/L

Drum marking sensor gain 2

7

DM

PE3

OUT

"L"

Drum motor

8

PSGAIN0

PE4

OUT

H/L

Process sensor gain 0

9

PSGAIN1

PE5

OUT

H/L

Process sensor gain 1

10

PSGAIN2

PE6

OUT

H/L

Process sensor gain 2

11

MM

PE7

"L"

Main motor

12

GND2

Vss

IN

—

Power (0V), signal GND

13

TVVS3

PB0

OUT

"H"

Tray3-vacuum valve solenoid

14

TBVS3

PB1

OUT

"H"

Tray3-blower valve solenoid

15

TBC3

PB2

OUT

"H"

Tray3-belt clutch

16

DVVS

PB3

OUT

"H"

Duplex vacuum valve solenoid

17

DBVS

PB4

OUT

"H"

Duplex blower valve solenoid

18

DBC

PB5

OUT

"H"

Duplex belt clutch

19

DTRC

PB6

OUT

"H"

Duplex transport (paper correction) clutch

20

DGS1

PB7

OUT

"H"

Duplex gate solenoid (after fusing)

21

TRC2a

PA7

OUT

"H"

Transport clutch 2

22

TRC1

PA6

OUT

"H"

Tray transport clutch 1

23

TBC2

PA5

OUT

"H"

Tray 2 belt clutch

24

TBVS2

PA4

OUT

"H"

Tray 2 blower valve solenoid

25

TVVS2

PA3

OUT

"H"

Tray 2 vacuum valve solenoid

26

TBC1

PA2

OUT

"H"

Tray 2 belt clutch

27

TBVS1

PA1

OUT

"H"

Tray 2 blower valve solenoid

28

TVVS1

PA0

OUT

"H"

Tray 2 vacuum valve solenoid

29

+5V (C)

Vcc

IN

—

Power (+5V)

30

RD

RD

IN

"L"

Read input

31

WR

WR

IN

"L"

Write input

32

I/O2CS

CS

IN

"L"

I/O chip select input

33

RESET

RESET

IN

"H"

Reset input

34

GND2

Vss

IN

—

Power (0V), signal GND

35

A2

A2

IN

H/L

Address bus A2

36

A1

A1

IN

H/L

Address bus A1

37

A0

A0

IN

H/L

Address bus A0

38

D0

D0

IN/OUT

H/L

Data bus D0

39

D1

D1

IN/OUT

H/L

Data bus D1

40

D2

D2

IN/OUT

H/L

Data bus D2

41

D3

D3

IN/OUT

H/L

Data bus D3

42

D4

D4

IN/OUT

H/L

Data bus D4

43

D5

D5

IN/OUT

H/L

Data bus D5

44

D6

D6

IN/OUT

H/L

Data bus D6

45

D7

D7

IN/OUT

H/L

Data bus D7

46

PFM

PC7

OUT

"H"

Process cooling fan motor (+10V drive)

47

BRK

PC6

OUT

"H"

Brake clutch

48

CFM2

PC5

OUT

"H"

Optical system cooling fan motor 2

49

CFM1

PC4

OUT

"H"

Optical system cooling fan motor 1

50

DTRC2

PC0

OUT

"H"

Duplex transport clutch 2

51

SGS

PC1

OUT

"H"

Duplex lead edge stopper solenoid

52

DSSEL

PC2

OUT

H/L

Duplex stepping motor selection

53

DGS2

PC3

OUT

"H"

Duplex gate solenoid F2 (for switchback)

54

MCT

PG0

IN

"L"

Main charger trouble detection

55

TCT

PG1

IN

"L"

Transfer charger trouble detection

9–8

Description

Pin No.

In/Out

H/L

56

TES

Signal name PG2

Port

IN

"L"

Description

57

TNF

PG3

IN

58

GND2

Vss

IN

—

Power (0V), signal GND

59

TLM1U

PF0

OUT

"L"

Tray lift motor 1 rise

60

TLM2U

PF1

OUT

"L"

Tray lift motor 2 rise

61

TLM3U

PF2

OUT

"L"

Tray lift motor 3 rise

62

TLM1D

PF3

OUT

"L"

Tray lift motor 1 fall

63

TLM2D

PF4

OUT

"L"

Tray lift motor 2 fall

64

TLM3D

PF5

OUT

"L"

Tray lift motor 3 fall

Toner empty detection Waster toner bottle full detection

(7) I/O.2 input/output signal matrix Port

7

6

PA

Out TRC2a "H"

Out TRC1 "H"

PB

Out DGS1 "H"

PC

5

4

3

Out TBC2 "H"

Out TBVS2 "H"

Out TVVS2 "H"

Out DTRC "H"

Out DBC "H"

Out DBVS "H"

Out PFM "H"

Out PSBRK "H"

Out CFM2 "H"

PE

Out MM_ "L"

Out PSGAIN2 H/L

PF

Out TBM_ "L"

1

0

Out TBC1 "H"

Out TBVS1 "H"

Out TVVS1 "H"

Out DVVS "H"

Out TBC3 "H"

Out TBVS3 "H"

Out TVVS3 "H"

Out CFM1 "H"

Out DGS2 "H"

Out DSSEL H/L

Out DFSS "H"

Out CRS "H"

Out PSGAIN1 H/L

Out PSGAIN0 H/L

Out DM_ "L"

Out DMGAIN2 H/L

Out DMGAIN1 H/L

Out DMGAIN0 H/L

Out TVM_ "L"

Out TLM3D_ "L"

Out TLM2D_ "L"

Out TLM1D_ "L"

Out TLM3U_ "L"

Out TLM2U_ "L"

Out TLM1U_ "L"

(NO USE)

(NO USE)

(NO USE)

(NO USE)

In TNF "H"

In TES "L"

In THVGT "L"

In MHVGT "L"

PG

@

1:

2

"H"/"L" are at port level.

(3) Writing as required: Auditor related data such as 1 account No. memory, 2 limit counter memory, and 3 department counter body are very large in volume, and stored in the SRAM normally. Some of them are transferred to the EEPROM as required.

(8) Memory (IC116, IC207) The SD-2060 employs the EEPROM and battery-backed-up SRAM as its memory. In addition to the conventional SRAM, the EEPROM is used to provide a double backup system, preventing against memory data error caused by external noises. That is, the SD-2060 has backup memory of:

(SRAM)

1 IC207 TC5564AFL (SRAM),

Counter area

(EEPROM) ➩ (1) ➩

Counter area

➩ (2) ➩

Simulation data area

➩ (3) ➩

Auditor related data

2 IC116 X28C64 (EEPROM). The SRAM 1 is backed up with a battery, and the EEPROM 2 is a memory which keeps the data even when the power is turned off. The EEPROM has the following two features:

1 The number of writing is limited (about 100K). (For the SRAM,

Auditor related data

there is no limitation.)

2 It takes some time to write. (About 10 msec for 64 Kbyte write. The SRAM takes only 1 usec.) In the SD-2060, therefore, data to be stored are classified and some are written into the EEPROM. (1) Writing every time when turning off the power: The most important data in the total counter and the maintenance counter are written into the SRAM, and transferred from the SRAM to the EEPROM every time when the power is turned off. (2) Direct writing to the EEPROM: Less frequently written data such as simulation data are written directly into the EEPROM.

9–9

(9) Power circuit in the main circuit

(12) Battery voltage check circuit

In the SD-2060 main PWB, the 24V power voltage is supplied from the DC power circuit, and IC117 (78M10H) and IC118 (78M05H) generate the power used in the main circuit. This prevents against abnormal operations of the main circuit due to the power line noises.

When the SD-2060 main body power is turned on, the circuit is operated with the memory backup battery voltage check (BCKOUT) signal which is sent from the CPU and the battery voltage is fed-back to the analog port of the CPU.

+24V

IC117

IC113 CPU BCKout

+10V(B)

IC118

+5V(C)

CPU ROM I/O EE-PROM

+5V(B)

RAM

FW

AN

(13) Reversing section drive motor control circuit In the duplex copy mode, paper transported from the fuser unit is reversed and transported to the duplex copy paper. In this case, the transport speed is switched and paper overlapping in the reversing section is prevented in continuous paper feed by this circuit.

(10) Auto exposure sensor (AES) and optical system dirt sensor (AEDS) circuit The auto exposure sensor (AE) and the optical system dirt sensor (AEDS) circuit are composed of the sensor input circuit and the sensor gain level select circuit. When simulation No./ 47 is performed, the auto exposure sensor (AE) reads the white paper level to determine the gain level. When simulation no. 46 is performed, the optical system dirt sensor (AEDS) radiates the reference plate on the back surface of the glass holder with a constant light intensity (CL voltage: 70V) to determine the gain level.

IC113 CPU

IC234 Timmer Pulse generator

+ -

IC113 Analog input AES (AEDS)

IC107 AEGIN2

AEGIN0 I/O

(11) Process control sensor (PCS, DNS) circuit The process control sensor circuit is composed of the sensor input circuit and the sensor gain level select circuit. The process control sensor (PCS) and the drum mark sensor (DMS) are divided into the light emitting section and the light receiving section. The gain level in the light emitting section is controlled to obtain a constant input voltage in the light receiving section. The input circuit is provided with a variable resistor to adjust variations in the sensor sensitivity with simulation No. 44-2, 3.

+10V

I/O

PCS (DMS)

+ -

IC133 Motor driver

DSM

IC221 Motor selector

(Transport speed) Fuser unit → Reversing section: 400 mm/sec Reversing section → Duplex copy tray: 1000 mm/sec

AEGIN1

IC108

CK1

C/CW,M1 DSSEL/DBMA,B,A,B

AES (AEDS)

IC232 Analog signal selector

+ -

IC113 Analog input PCS (DMS)

9 – 10

DBM

(14) Fan motor control circuit

To control BL (blank lamp), the following control lines are provided.

The fan motor control is classified into two as follows:

1 BLCLOCK: Serial transfer clock output

1 ON during copying only

2 BLDATA: Serial transfer data Data is changed at clock rising. Data is saved at clock falling.

a. Optical system fan motor (CFM1, CFM2, VFM) b. Power PWB cooling fan motor (PSFM)

3 BLLATCH: Data latch output

2 ON regardless of copying or standby

Data is changed at latch output rising. Data is saved at latch output falling.

a. Fuser blower fan motor (FFM) b. Process blower fan motor (PFM)

4 BLBEO:

To suppress noises in the standby state, selection of +24V/+10V is performed. FFMa_

FFMb_

PFM

FFM

1

1

0

OFF

OFF

Power OFF, door open, trouble, JAM

1

1

1

OFF

+10V ON

NC

1

0

0

+10V ON

OFF

NC

1

0

1

+10V ON

+10V ON

Ready standby

0

1

0

+24V ON

+24V ON

Copying

0

1

1

+24V ON

+24V ON

NC

0

0

0

+24V ON

+24V ON

NC

0

0

1

+24V ON

+24V ON

NC

Data output enable Driver (data) is ON at "H." Driver (data) is OFF at "L."

PFM

BLCLOCK

BLDATA

BLLATCH

LATCH ON

BLBEO

ON OFF

("1": "H", "0": "L") (Note) The output level definitions are at the CPU port. ON

POWER

(Relationship between reduction copy and the blank lamp) ON

+24V

Reduction ratio

BL state (F : ON, ✕:OFF)

×100% ~ ×96%

F ✕ ← 50 → ✕F

× 95% ~ ×92%

F F ✕ ← 48 →✕F F

× 91% ~ ×88%

F F F ✕ ← 46 → ✕F F F

× 87% ~ ×84%

F ← 4 →F ✕← 44 → ✕F ← 4 → F

× 83% ~ ×80%

F ← 5 →F ✕← 42 → ✕F ← 5 → F

× 79% ~ ×76%

F ← 6 →F F ✕ ← 40 → ✕F ← 6 → F

× 75% ~ ×72%

F ← 7 →F ✕← 38 → ✕F ← 7 → F

× 71% ~ ×68%

F ← 8 →F ✕← 36 → ✕F ← 8 → F

1 Delay from POWER ON (about 100 msec)

× 67% ~ ×64%

F ← 9 →F ✕← 34 → ✕F ← 9 → F

2 Driven with +24V (for about 1.0 sec) → 3 Warmup, ready wait

× 63% ~ ×59%

F ← 10 →F ✕ ← 32 →✕F ← 10 → F

4 During copying

× 58% ~ ×56%

F ← 11 →F ✕ ← 30 →✕F ← 11 → F

5 Door open, JAM → 6 Door close (Same process of 1 → 2 → 3 .)

× 55% ~ ×52%

F ← 12 →F ✕ ← 28 →✕F ← 12 → F

× 51% ~ ×50%

F ← 13 →F ✕ ← 26 →✕F ← 13 → F

ON

+10V FFM

OFF

OFF ON

+24V

ON

+10V PFM

OFF

OFF

1

2

3

4

5

6

(15) Blank lamp control circuit The blank lamp radiates light to the non-image area on the photoconductor to discharge the void area in the copy lead edge and the non-image area in reduction copy.

BL PWB IC 113 CPU

BL CLK BL DATA

BL LATCH

IC 214

IC 2 Controller

BL

BL BEO

9 – 11

4. POWER SOURCE (1) Block diagram The DC power circuit directly rectifies the AC source voltage, switching-transforms it with the convertor circuit, rectifies it again and smoothes it to provide a DC voltage. The block diagram is shown below.

AC IN

Noise filter circuit

Rectifying smoothing circuit

Rush current Iimiting circuit

Inverter circuit (RCC system) Converter Transformer (T1)

Rectifying (-24V out) smoothing circuit

-24V

Regulator circuit

Rectifying (10V out) smoothing circuit

10V

Regulator circuit

10V ON/OFF control Rectifying (12V out) smoothing circuit Inverter (24V) circuit (Forward system)

Thermal protection

Converter transformer (T2)

Rectifying smoothing circuit

24V control circuit

Driver transformer (T3)

Regulator circuit

24V -24V ON/OFF control 24V ON/OFF control

Inverter (38V) circuit (Forward system)

Rectifying smoothing circuit

Converter transformer (T2)

Driver transformer (T5)

Full-wave rectifying circuit

38V control circuit

Over voltage protection circuit

PC1

9 – 12

38V 5V ON/OFF control

Chopper circuit

5V

FW circuit

FW

RCC invertor starts its operation later, the voltage generated in T1 turns on TRC1, biasing R4 and R111. (R111 is equipped with a built-in fuse.)

(2) Operation 1 Noise filter circuit The input noise filter circuit is composed of L and C as shown below, reducing normal mode noises and common mode noises flowing into and out from the AC line.

T1 TRC1 R2

F701

L1

C13

L2

(15A 125V)

C4 C1

R4

C2

R111

R3

R9

D3

C5

To smoothing capacitor

2 Rush current limiting circuit

3 Rectifying/smoothing circuit

To protect the switch contacts from being deteriorated by an extremely large rush current, the rush current limiting circuit is provided. When the power is supplied, a charging current flows through R4 and R111 to the smoothing capacitor, limiting the rush current. When the

The AC input voltage is rectified with diode D1 and smoothed with electrolytic capacitors C9 and C10. This circuit employs the double voltage rectifying method, providing a DC voltage after rectification twice as great as the input voltage.

4 Invertor circuit (RCC system, 10V, –24V and the control circuit power system)

direction. Therefore the collector current increases as time passes. As a result, after some time, Q1 becomes insufficient in hFE, shifting to OFF state rapidly. At this moment, secondary rectifying diodes (D6, D7, D8) conduct to supply power to the load. The control circuit is simple in construction. When Q1 is turned off, C15 is negatively charged through D2.As the voltage across C15 increases, ZD1 conducts to turn on Q2, cancelling the base current of Q2 and turning off Q2. In this way is the ON/OFF timing of Q2 is controlled so that the voltage across C15 is kept at a constant level.

This circuit is a one-stone self-excited invertor, and the system is called as the ringing choke convertor (RCC) system. The circuit operation is as follows: When a drive current is applied through starting resistors R7 and R8 to the base of switching transistor Q1, switching transistor Q1 conducts. Then a voltage is applied to the primary winding of transformer T1, generating a voltage in the drive winding simultaneously. The bias is further kept in the positive

T1 ST-X09 C13 1000 10V

F1 0.4A 250V Q2 2SB698 R14 470

(7)

+

R7 180K 1/2W

R8 180K 1/2W

R9

D3

33 1/2W

AL01Z (2)

Q1 2SC4231

(11)

D4

R24 1.8K 1/2W

1

3 O G 2 C18 100 16V

R25 5.6K

1

AL01Z +

C16 220 25V

(6)

R10 82K 2W

C23 0.01 1KV

IC1 AN78N12

D6

IN

D7

ZD1 RD6.2EB1

ZD2 RD7.5EB1

C65 680P R12 470 1KV

R19

47K

ERB44-0B C14 D5 AL01Z (4) 0.1

+ R25 2.7K 1/2W

C17 100 (12) 50V

R28 Q12 2SA953

1

+

3

IC2 AN78L24 Q8 2SC945

G 2

R30 1.8K 1/2W

(14)

R31 5.8K R32 4.7K

IN

O G R 3 4

ZD20

+24V sensing

C19 0.1

R29 10K

IC3 L780S10

AL01Z

C20 580 25V

O

2.2K

D8

(15)

C15 + (5)

IN

AL01Z

(3) R11 100 1W

R13 1K

D32 1SS53

(10) (13)

+12V (Power for 24V, 38V (output control circuit)

+

5

-24V 10V

+

+5V sensing

C21 100 16V Q9 2SC945

100 50V

The three output circuits in the secondary side are stabilized by the three-terminal regulator IC’s (IC1, IC2, IC3). For –24V and 10V outputs, the ON/OFF control circuit for sequence control is provided. The –24V output is controlled by ZD20, Q8 and Q12 so that the output is turned on when the 24V output is 18V or higher. The 10V output is controlled by the three-terminal IC with the output ON/OFF control and Q9 so that it is outputted when the 5V output supplies 1V or more. The +12V output serves as the power source for controlling the 24V/38V output invertor circuit as described later. When this output falls below 8V, all outputs are stopped.

0

Q1 Collector-emitter voltage waveform Q1 Collector current waveform

0 D6, D7, D8 operation voltage 0

With 100V input and rated load

9 – 13

5 Invertor circuit (Forward convertor system) The 38V output as well as the 24V output employs the forward convertor system. Only the 38V circuit, therefore, is described here.

FB4 FB13

D14 ERB44-10

T4 PT-X57 (9) (2) (10)

L5 FB9 HK-20D160-1810

D23 ESAD92M-03

FB5

FB10 F3 3.0A 250V

C39 0.1 400V

R107 120K 3W

D15 ERB44-10 FB14

Q5 2SK1082

ZD11 RD22EB1 ZD12 RD22EB1

(5)

R110 270 1/2W

R22 10 1/2W

R51 4.99K

R64 4.99K

R68

C35 3300 50V +

C34 3300 50V +

FB6

R62A R62B 120 31.6

R10B 10 1/2W

R66 CMW-1.2-P15 R67 CMW-1.2-P15

C42 3300P T5 DT-P20 (4) R69 1K 1W (2) (3)

D17 R109 AL01Z 270 1/2W

R113 100 1W D19 10DF8

C44 470P 1KV

(13) (12)

(7)

D15 AL01Z

C40 580P 1KV

C52 1000P 1KV

C41 3300P ZD10 RD22EB1

Q6 2SK1082

C45 1000P 1KV

R63 5.6 1W C43 470P 1KV

(4) (5)

C47 0.1 50V (6)

ZD13 RD22EB1

(1)

+ C46 100 16V

D20 1SS53

Switching transistors Q5 and Q6 (Q3 and Q4) connected in parallel to each other are turned on/off by drive transformer T5 (T3) which is driven by the signal from the control circuit in the secondary side, converting the input DC voltage into high frequency pulses. The high frequency pulses are dropped by convertor transformer T4 (T2), rectified by diode D23 (D21), and smoothed by L5, C35, and C34 (L4, C29, and C30). When the secondary side control circuit turns on the drive transformer, a voltage is generated at the gate of Q5 and Q6 (Q3 and Q4) in the primary side to conduct the transistor. Then a voltage is applied to the primary winding of the convertor transformer T4 (T2), generating a voltage in the secondary winding to conduct the same phase side of D23 (D21) as the transformer, supplying the power to the load. When the drive transformer turns off, a counter-electromotive force is generated in the primary side to pull down the gate voltage of Q5 and Q6 (Q3 and Q4) and no voltage is generated in the secondary side. Since, however, a current has been flowing through L5 (L4), a counter-electromotive force is generated by that current to conduct the flywheel side of D23 (D21), supplying the power to the load.

6 Output voltage control circuit The output voltage is controlled by the PWM (Pulse Width Modulation) method. The output is detected by the control IC, IC5 (IC4), and is inputted into the error amplifier in the IC together with the IC’s reference voltage to control the ON/OFF time of Q5 and Q6 (Q3 and Q4) through the PWM convertor and the drive transformer, stabilizing the output. The 24V output control circuit is equipped with the control circuit (R114, R55, R56, Q7, Q13) so that the 24V circuit may not start until the 38V output rises. That is, all outputs are off until the 38V output rises because all of 5V, 10V, –24V, and 24V are under the sequence control.

7 Overcurrent protection circuit The negative $ line of the secondary side is connected with detecting resistors R66 and R67 (R44 and R45), which detect an overcurrent and send signals to the control IC, IC5 (IC4), decreasing the ON width of the pulse and reducing the output voltage. The output of this circuit is of 71-character characteristics.

Q5, Q6 (Q3, Q4) Drain-source voltage waveform

R66 (R44)

To IC error amplifier

0

Transformer pin side

Q5, Q6 (Q3, Q4) drain voltage waveform 0

R62B R62A (R42B) (R42A)

R67 (R45)

Output pin side

8 Chopper regulator circuit (5V system) The 5V system is directly pulled down from DC 38V through the chopper circuit (Q15, L6). The switching frequency is determined by CR of 5 pin and 6 pin of IC5, and switching is performed at about 70KHz. Q15 is a switching transistor. Smoothing is performed by D29, choke coil L5, and electrolytic capacitor C55 to supply 5V.

Q5, Q6 (Q3, Q4) gate waveform 0

9 – 14

Control is performed by IC6. The internal reference voltage of IC6 and the divided voltage of the output are inputted to the error amplifier to control the ON/OFF time of Q15 through the PWM comparator, stabilizing the output. To protect the circuit against an overcurrent, the output current is detected by R105. If an overcurrent is detected, the ON width of Q15 oscillation pulse is narrowed to drop the voltage.

The AC input voltage is full-wave rectified by D2, D18, D24, D30. If the pulse voltage is higher than the cut voltage of ZD4, photocoupler PC1 conducts. If it is lower than the cut voltage of ZD4, photocoupler PC1 does not conduct. This repeats ON/OFF of the photocoupler. voltage transmitted to the secondary side by the photocoupler turns ON/OFF Q10 to supply the FW signal.

9 Overvoltage protection circuit When the 38V output, the 24V output, or the 5V output reaches an overvoltage state, all the outputs are latched. An overvoltage state of the 38V output is detected by ZD18, the 24V output by ZD16, and the 5V output by ZD17. The detected signal is applied to the gate of thyristor SCR1 to conduct SCR1. Then Q14 is turned on to stop oscillation of the 38V control IC. When the 38V output stops oscillation, as stated above, all the outputs are turned off by the sequence control circuit, protecting against an overvoltage. The operation is of the latch system, and the AC power is supplied again after removing the overvoltage.

Waveform between 1 and 2 FW output

Each waveform

F FW system output circuit

AC

AC

R112

D18 10E6

D2 10E6

100 D30 10E6

D24 10E6

R15

R16

12K 1W

12K 1W

ZD4 RD3.0EB2

R19

ZD5 RD6.2EB1

R17 33K 1W

R20 4.7K 1/2W

38V

FW

Q10 2SC945 PC-113 R23 2.7K

Primary side

47K

PC1

C22 0.1

Secondary side

9 – 15

GND

5. RADF Electrical section (1) General This circuit controls paper feed, transport, stop, and paper exit, and is composed of various sensors, switches, the circuit which processes inputs from the PPC, the circuit which drives motors, brakes, and solenoids, the CPU, and its peripheral circuits.

(2) Block diagram

SGND TXD RXD DTA DSR RESET S_SOL

Paper feed motor drive circuit

Communication circuit

DFMRS

Paper feed motor rotation sensor input circuit

DTMRS

Paper transport motor rotation sensor input circuit

DETMRS

Paper exit/reverse motor rotation sensor input circuit

G H K L

B

C D

Chip select circuit

DTS

Timing sensor I/O circuit

RDD

Paper exit/reverse sensor I/O circuit

+5V Reset cirucit

9.83Hz oscillation circuit

F Original set sensor I/O circuit

DLS1

Tray feed size sensor 1 input circuit

E

Tray feed size sensor 2 input circuit

DLS2

SSW

Stream mode switch input circuit

TPSW

Thin paper mode switch input circuit

F

ADF open/close switch input circuit

G H I J External I/O (IC24)

1.06KHz oscillation circuit

DIP switch

Push switch

+24V

Reverse guide open/close switch input circuit

9 – 16

K

Transport brake drive circuit

DBRK

Reverse solenoid drive circuit

DRSOL

Stopper solenoid drive circuit (for controlling the main body)

ROM (IC25)

Power circuit

DSD

TGOD

30KHz oscillation circuit

+10V

DEM

Paper exit/reverse motor drive circuit

E

Original width sensor I/O circuit

+5V SGND +24V PGND

Current limiting circuit

Paper exit/reverse motor speed control circuit

EEPROM (IC23)

Original resist sensor I/O circuit

DWS

AUOD

CPU (IC21)

Tray width sensor input circuit

DRS

DTM

Tramsport motor drive circuit D

DTWS

Paper feed motor speed control circuit

B C

A

DFM

I J

ADF FEED lamp

LED lighting circuit

429Hz oscillation circuit

A

REMOVE ORIGINAL lamp

L

(3) Operations

1 Sensor/detector input circuit a. Paper exit/reverse original sensor (RDD) input circuit +5V DF3-6P-2DSA 1 CN5,1 +5V 5 CN5,5 RDDLED

Paper exit/reverse sensor A 2

RDD

K 1 TLN 199

B4B-PH-K-S 4 +5V PH110 3 VOUT E 2 2 LED 1 1 SGND 68K

C 1

CN45,4 CN45,3 CN45,2 CN45,1

CN15,1 CN15,2 CN15,3 CN15,4

+5V RDD RDDLED SGND

CN15,1 CN15,2 CN15,3 CN15,4

+5V R126 1

+5V 1

R65 ERJ6GEYK225V ERJ6GEYJ103V 2.2M 2 10K 2 1 2 6 CN5,6 RDD 2 1 C71 GRM40B 1 CN5,2 SGND -103K50PT 2 2 0.01µF

2

Q25 2SC2712Y IC26.3 µPC324G2 C 2 + 10 8 1 2 R26 9 ERJ6GEYJ303V R134 E 1 R3 30K ERJ6GEYJ102V ERJ6GE 1 2 1K -YJ392V IC27.4 3.9K 11 + 12 10 µPC339G2

C16 TRHS DA 66 17 1 GRM40B102K50PT TRHS TRHS AD 63 100PF +5V CPU 1 2 TP13 R43 2 SGND 1 ERJ6GEYJ103V TP4 10K 1

SGND

Paper exit/reverse sensor input circuit [Fig. 1] The paper exit/reverse original sensor is a reflection type sensor composed of an LED and a photo transistor. Infrared rays reflected by the LED are radiated to the photo transistor, increasing the photoelectric current flowing through the photo transistor to detect the original. This circuit is equipped with the automatic adjustment function by the CPU and is able to maintain the sensor sensitivity at a constant level. The LED cathode is connected to the voltage-current conversion circuit which is composed of the operation amplifier (IC26) (IC26), Q25, and R134. It controls the current value with the D-A output (analog voltage value) of the CPU. That is, IC26 9 pin input voltage (voltage drop of LED current by R30) is always made equal to the CPU D-A output value (66 pin). So varying the D-A output varies the current value. On the other hand, the photoelectric current of the photo transistor is converted into a voltage by the emitter resistance in the sensor PWB, passed through the noise filter composed of R65 and C71, and inputted to IC27 10 pin and the CPU 63 pin. R3, R26, R135, IC27, and IC4 compose the voltage comparator which compares the input voltage from the sensor and the threshold voltage (about 1V) formed by dividing +5V with R3 and R135. When the input voltage from the sensor exceeds the threshold voltage, the output at IC27 13 pin is inverted to be LOW and inputted to the CPU 17 pin as "Original present" signal. The CPU 63 pin is the A-D input pin, and the analog voltage is converted to the digital value in the CPU. In the direction of the sensor optical axis is the background plate whose reflection factor is smaller than that of the original. This background plate provides the emitter voltage of the photo transistor, which serves as the reference voltage of "original absence." Since the sensor sensitivity varies depending on the unit in general, the sensor sensitivity is automatically adjusted according to the reference voltage of "original absence." The sensor voltage at "original absence" is A-D-inputted to change D-A output voltage. Then the LED current (LED light intensity) is changed and the sensor voltage is controlled to be a specified level by the CPU. The D-A output value is unique to each unit and is stored in the EEPROM (IC23) memory.

b. Original resist sensor (DRS)/timing sensor (DTS) input circuit

+5V 1 CN4,1 +5V 5 CN4,5 DRSLED

Orugunal resist sensor A 2

DRS

K 1 TLN 199

B4B-PH-K-S C 1 4 +5V PH110 3 VOUT E 2 2 LED 1 1 SGND 68K

6 CN4,6 DRS 2 CN4,2 SGND

2

Timing sensor A 2

DRS

K 1 TLN 199

B4B-PH-K-S 4 +5V PH110 3 VOUT E 2 2 LED 1 1 SGND 68K

+5V 1 R1 ERJ6GEYJ472V 10K

CN44,4 CN44,3 CN44,2 CN44,1

2

R34 ERJ6GEYJ103V 10K 1 2 1 1 C68 R122 2 2

ERJ6GEYK225V 2.2M +5V DF11-16DP-2DSA 9 CN4,9 DTSLED

1 R131 ERJ6GEYJ472V 2 4.7K

GRM40B103 -K50PT SGND 0.010µF

C 1

2

CN44,4 CN44,3 CN44,2 CN44,1

+5V 1 R2 ERJ6GEYJ472V 10K

DF11-16DP-2DSA R37 ERJ6GEYJ103V 10K 1 2 10 CN4,6 DTS 1 R125 1 C70 ERJ6GEYK225V SGND 2 2.2M 2

+5V R33 1 ERJ6GEYJ225V 10K IC15.1 C14 2 HD74HC04FP R130 GRM40B102K50PT HD74HC04FP Q23 2SC2712Y IC28.1 13 6 5 ERJ6GEYJ102V X1 C 2 2 3 100PF 1 + 1 1 1 R27 2 1 1 IC2.3 RES_DA 2 1 R121 B ERJ6GEYJ473V 1 1K RES ERJ6GEYJ225V E 3 µPC324G2 R28 47K 2.2M TP23 RES_AD +5V 2 ERJ6GEYJ510V IC1.3 1 2 2 9 1 A 8 1 R27 ERJ6GEYJ473V IC27.1 51 Y 10 5 B TP24 + SGND 2 2 10K 4 HD74HC00FP - µPC339G2 1

2

74 67 19 65 CPU

TIMS 16 TIMS_AD 64

IC15.2 C15 R132 Q24 2SC2712Y IC28.2 GRM40B102K50PT HD74HC04FP ERJ6GEYJ102V X1 C 2 2 5 100PF 1 + 1 1 1 R25 2 7 1 6 1 R124 B ERJ6GEYJ473V 1 1K ERJ6GEYJ225V E 3 µPC324G2 R29 47K 2.2M TP15 +5V 2 ERJ6GEYJ510V IC1.4 1 2 2 9 1 A 8 1 R38 ERJ6GEYJ473V 51 IC27.3 Y 10 5 B TP14 + SGND 2 2 10K 4 HD74HC00FP - µPC339G2 1

1 R133 ERJ6GEYJ472V 2 4.7K

GRM40B103K50PT 0.010µF SGND

Original resist sensor/timing sensor I/O circuit [Fig. 2] The original resist sensor and the timing sensor are of reflection type similarly to the paper exit/reverse original sensor. Either circuit is equipped with the automatic adjustment function, and is composed similarly. This circuit, however, is additionally equipped with the analog switch signal select circuit because the CPU D-A pin is commonly used by two sensors. That is, when the select signal from the CPU 74 pin is at HIGH, IC15.2 conducts and IC15.1 stops conduction. As a result, the D-A value of the timing sensor is outputted from the CPU. When, on the contrary, the CPU 74 pin is at LOW, the original resist sensor is selected and the D-A value of the original resist sensor is outputted from the CPU.

9 – 17

c. Paper fed motor rotation sensor (DFMRS), transport motor rotation sensor (DTMRS), paper exit motor rotation sensor (DEMRS) +5V 1 TLP1215(C1)

+5V 1 VCC 2 VOUT 3 GND

Paper feed motor rotation sensor

2

DF11-16DP-20SA CN1.1

DFMRS

1

RA6.1 RGLD6X103J 10K R86

TP26 IC7.1

ERJ6GEYJ472V 1 2

1 ACLY

4.7K

CPU 3pin

1 C8 GRM40B102K50PT 2 1000PF

SGND

DFMRS

1

2 HD74HC14FP

KMTCLK (To the paper feed motor speed control circuit)

Paper feed motor rotation sensor input circuit SGND +5V 1 TLP1215(C1)

+5V 1 VCC 2 VOUT 3 GND

Transport motor rotation sensor

2

DF3-6P-20SA CN5.3

DTMRS

3

R84 RGLD6X103J 10K R87

TP27 IC7.2

ERJ6GEYJ472V 1 2

1 3 4 ACLY HD74HC14FP 1 C9 GRM40B102K50PT 2 1000PF

4.7K SGND

DTMRS

Transport motor rotation sensor input circuit

CPU 2pin

BMTCLK (To the paper feed motor speed control circuit)

SGND +5V 1

TLP1215(C1)

+5V 1 VCC 2 VOUT 3 GND

Paper exit/reverse motor rotation sensor

2

DF3-6P-20SA CN5.4

DETMRS

4

R85 RGLD6X103J 10K R88

TP38 IC7.3

ERJ6GEYJ472V 1 2

5

SGND

DETMRS

1

6

CPU 79pin

ACLY HD74HC14FP 1 C10 GRM40B102K50PT 2 1000PF

4.7K

HMTCLK (To the paper exit/reverse motor speed control circuit)

Paper exit/reverse motor rotation sensor input circuit SGND

[Fig. 3] The sensors are composed of a photo interrupter with a built-in amplifier and a slit disc attached to the motor shaft, and provide pulse signals corresponding to the motor rotation. The motor rotation is detected with the pulse signal frequency. By counting the number of pulses, the motor rotations can be detected. The input section of the three signals are of the same composition. Signals are processed by the noise filter composed of R86, 87, 88, C8, 9, and 10 and the waveform rectifying circuit of IC17.

d. Tray original size detection circuit VB16L43 +5V 1 2 3

Tray width sensor

DTWS

CN4.4

TryVR

4

SGND

+5V 1

TLP1217(C1)

+5V 1 VCC 2 VOUT 3 GND

Tray feed size sensor 1

4

DF11-16DP-20SA CN4.12

TryS_1

12

C67 GRM40B103K50PT 0.010µF

1

1

330

TRYWS

62

CPU (IC21)

1 C76 GRM40B221K50PT 2 220PF

2

RA6.3 RGLD6X103J 10K RA7.2

SGND

RGLD5Y472J 3 4

TP17 1

TRYS1

2

4.7K 1 C19 GRM40B102K50PT 2 1000PF

SGND

DLS1

TP29

R69 ERJ6GEYJ331V 1 2

DF11-16DP-20SA

+5V 1 TLP1217(C1) Tray feed size sensor 2

DLS2

+5V 1 VCC 2 VOUT 3 GND

5

DF11-16DP-20SA CN4.13

TryS_2

13

RA6.4 RGLD6X103J 10K RA7.3

(IC24)

SGND TP18

RGLD5Y472J 5 6

1

TRYS2

1

4.7K 1 C20 GRM40B102K50PT 2 1000PF

SGND

SGND

Tray width sensor, tray feed size snsor 1, tray feed size sensor 2 input circuit [Fig. 4] This circuit detects the size of the original on the tray. The detecting section is inside the tray. The original width is detected by the volume (DTWS), and the original length by two photo interrupters (DLS1, DLS2). DTWS is the variable resister attached to the original guide. DTWS position is varied by the sliding distance of the original guide. The valul of variable resister fixed by position of original size guide. DLS1 and DLS2 are equipped with a lever-type actuator. When the actuator is pressed by the original, the light path is interrupted and the original size is detected. The signal is inputted to IC24 1, 2 pin through the noise filter composed of RA7, 2, 3, C19, and 20.

9 – 18

e. Open/close switch (AUOD, TGOD) input circuit +5V DC+24V

BSP-VH ADF open/close switch (AUOD)

CN7.1

DC+24V

CN7.2

DF opn

1 2

R92 ERJ6GEYJ472V 1 2

ZD1 RD12MB2 1 2 K A 12V

4.7K

C 2 1 B

1 R67

Q9 FA1L3N

2

E 3 B10P-VH Reverse guide open/close switch (TGOD)

CN6.1

DF opn

CN6.2

R opn

1

ZD2 RD12MB2 1 2 K A 12V

+24V

2

ERJ6GEYJ103V 10K

1 R68 ERJ6GEYJ103V 10K 2 DFOPEN

40

ROPEN

39

External I/O (IC24)

C 2 1 B

1 R19 ERD25FAJ4R7 C29 4.7 2 50TWSSION 1 2 + 10µF

Q10 FA1L3N E 3

SGND

PGND

ADF open/close switch, reverse guide open/close switch input circuit [Fig. 5] This circuit detects open/close of the ADF unit and the reverse guide, and is connected with two microswitches.Either switch contact is closed by closing each open/close section. The microswitches are connected in series from +24V, and directly open and close the power for each drive section. That is, only when both switches are closed, the power is supplied to the drive section. When the ADF open/close switch is turned on, +24V is applied to the ZD1 cathode, providing a current to the Q9 base through R29. Then R29 is turned on and the open/close signal is inputted to IC24 40 pin. In other open/close switch input circuits, the operations are the same as above and each open/close signal is inputted to IC24. Besides, R19 and C29 form the snubber circuit which absorbs the induced voltage generated when the open/close switch is opened during the DC motor rotation.

f. Original set detector (DSD), stream mode switch (SSM), thin paper mode switch (TPSW) +5V 1

Stream mode switch

SDFSW

TP19

RGLD5Y472J

7

DF11-16DP-2DSA CN4.14

RA6.5 RGLD6X103J 10K RA7.4 7

14

1

8

SDFSW

38

4.7K

SSW

1 C21 GRM40B102K50PT 2 1000PF

SGND

+5V RA6.6 1 RGLD6X103J 10K RA7.5

Thin paper mode switch

CN4.15

THINSW

TP20

RGLD5Y472J

7

DF11-16DP-2DSA

External I/O (IC24)

SGND

9

15

1

10

THINSW

37

4.7K

TPSW

1 C22 GRM40B102K50PT 2 1000PF

SGND

SGND

Stream mode switch, thin paper mode switch input circuit [Fig. 6] +5V 1 TLP1215(C1) Original set sensor

DSD

+5V 1 VCC 2 VOUT 3 GND

5

DF11-16DP-2DSA CN4.11

Emp_s

RA6.2 RGLD6X103J 10K RA7.1

11

TP16

RGLD5Y472J 1 2

1

4.7K 1 C18 GRM40B102K50PT 2 1000PF

SGND

EMPS

4

External I/O (IC24)

SGND

Original set sensor input circuit [Fig. 7] This circuit inputs each sensor and switch signal, and forms a noise filter. The original set detector is a photo interrupter integrated with an LED and a photo transistor. The stream mode switch and the thin paper mode switch are mechanical slide switches.

9 – 19

g. Original width sensor The original width sensor is a phote penetrate type sensor, and is composed of an LED and a photo transistor. Infrared ray from the LED is interrupted by the original to reduce a photoelectric current flowing through the photo transistor, thus detecting the original. This circuit can change the light emitting output with the volume (VR1) and absorbs variations depending on the machine. The photoelectric current of the photo transistor is converted into a voltage by the emitter resistance, and the voltage is passed through the noise filter composed of R36 and C69 to IC27 6 pin and 61 pin. R90, R91, R8, and IC27.2 form a voltage comparator which compares the input voltage from the sensor and the threshold voltage generated by dividing +5V with R90 and R91. When the input voltage from the sensor falls below the threshold voltage, IC27 1 pin output turns HIGH and "original presence" is outputted to the IC24 3 pin. At the same time, the input voltage from the sensor is inputted to the CPU 61 pin. +5V

CN4.7

DWLS

R4 VR3 PK502H202H0 ERJ6GEYJ121V 1 3 1 2

7

2K

+5V

120

R123 ERJ6GEYJ225V 2.2M 2

SGND CN4.8

DWRS

R90 ERJ6GEJ472V 4.7K

1

R8 ERJ6GEJ473V 1 2

2

47K

R36 ERJ6GEJ103V 1 2

8

V+=+5V GND=SGND

IC27.2

7

+

1

SIZES

6 -

10K

µPC339G2

1

1

C69 GRM40B103K50PT 0.010µF

CPU-61pin

R91 ERJ6GEJ472V 2 4.7K

2

IC23-3pin

SGND

[Fig. 8]

2 Motor control circuit a. Paper feed motor (DFM) control circuit This circuit maintains the motor speed at a constant level, and controls power supply to the paper feed motor so that the frequency of the paper feed motor rotation sensor signal coincides with the frequency of the reference clock signal. This circuit is largely divided into five blocks: (A) Reference clock select circuit, (B) One-shot pulse generating circuit, (C) Low pass filter circuit, (D) PWM circuit, and (E) Over-shoot prevention circuit. Paper feed motor rotation clock CPU refernce clock

Paper feed motor refernce clock (For original paper feed)

KMTP1s1

KMOT_SPD Clock select signal (Original paper feed & lead edge take-up) Paper feed motor reference clock KMTP1s2 (Original lead edge take-up) Transport motor rotation clock

KMTCLK

D

B

C

Tout

A Reference clock select circuit

Low pass filter

One-shot pulse generating circuit

Paper feed motor PWB signal KMOTPWM

PWB comparator

E

KMOT_Low

Low-speed rising signal

BMTCLK

PWM Phase compensation circuit

Over-shoot prevention circuit

SYNCHRO Clock select signal (Synchronization between the paper feed motoe and the transport motor)

Paper feed motor speed control circuit block diagram [Fig. 9] R 11 TP 5 ER J6GEYJ473V 4 7K 1 2 C2 5 R 11 ERJ6GEYJ103V µPC350G2 ER J6GEYJ103V 2 10K 1 2 1 2 1 2 10K 2 1 + 3 + R16 R10 7 K 1 1.0µ F IC ERJ6GEYJ103V ERJ6GEYJ104V IC31 +5V D8 A 2 SGN D 4 10 K 100 K OC D SA119 1 3 1 2 1 2 Ref SGND 56K R EFV 1 1 REFV CA + C 1 2 8 IC19.8 CA- C1 C2 5 2 16 7 1 2 CL+ C2 C 23 1 6 + 15 1 R17 ERJ6GEYJ103V 8.9K 1 R9 6 CL- C 2 1 GRM40B1 02 µPC350 G2 6 1 2 2 R ERJ6GEYJ202V -K50 PT 5 2 56K 2 C 2 2 1 47K 1 2 1 000µ F + R 10 R9 1.0µ F ER J6GEYJ473V SGND SGND SGND SGN D ERJ6GEYJ473V 4 7K 47K 1 2 +5V 1 R4 4

1

+5 V

13 14 6 9 11 10

1 R 11 ER J6GEYJ103V 2 1

2

1

R 11 ER J6GEYJ103V

2

IC2.1 +5 V KMTCLK

SGN D

10 11 12 13

IC 17.2 CLK

9

1

8

2

A B

Y

11 11

3 +5V

10 11 12 13

IC 17.2 9

CLK

8

2

1 +5V

IC3.4

KMTP1 -1

2 HD74HC00FP SGN D 13 A 11 12 Y A 9 8 12 11 B Y 13 B HD7 4HC0 0FP IC1 1.4 9 HD7 4HC0 0FP A 8 Y 10 B IC3.3 HD74HC00FP

1

IC9.4

12

KMOT SPD

CPU KMTP1 -2 31

IC3.4

BMTCLK

HD74HC00FP 4 A 6 9 Y A 5 8 B Y 10 B HD7 4HC0 0FP IC11.4 1 HD74HC00FP A 3 Y 2 B IC3.3 HD74HC00FP

IC9.4

SYNCHRO

2

9

8

TOUT

[Fig. 10]

9 – 20

+5 V 10 11 12 13

IC 17.2 9 CLK

8

1 2

A B

Y

3

+5 V 10 11 12 13

IC 17.2 9 CLK

8

The basic operations are: the paper feed motor circuit signal and the reference clock frequency are converted into a voltage, amplified and integration-compensated, and pulse-width modulated. The paper feed motor speed can take synchronization either transport motor rotation clock signal or reference clock signal. When rasing to a low speed, the duty range of the PWM signal is forcibly limited to reduce over-shoot of the motor speed. Each block operation is described below: (A) Reference clock select circuit This circuit selects the rotation speed reference clock signal, and is composed of two AND gates (IC4), one OR gate (IC11) and an invertor (IC8). When the select signal from IC24 19 pin is LOW, the transport motor rotation signal is selected. When the signal is HIGH, the clock signal from the oscillation circuit is selected and outputted to the next stage circuit. (B) One-shot pulse generating circuit This circuit generates one-shot pulses which are required for converting the frequency of the reference clock and the paper feed motor rotation signal into a voltage. The one-shot pulse width is obtained by counting the CPU internal system clocks 2048 times. (C) Low pass filter This circuit generates a voltage from the difference in frequencies of signals from one-shot pulse array generated according to the reference clock and the paper feed motor rotation signal. The secondary low pass filter is composed of IC29.2, RA1, C23, R10, C2, and R9. RA1, 3, RA1, 4 are consisted of additon circuit. This circuit cuts frequencies of about 100KHz or more. That is, the paper feed motor rotation signal carrier frequency is cut and only low frequencies generated by variations in the motor speed are passed. The two one-shot pulse arrays have polarities. If both are in the same frequency, the average voltage of added signal is 2.5V. If there is any difference between frequencies, the average voltage shifts from 2.5V. When, therefore, the frequency is higher than the reference clock (that is, when the paper feed motor rotates faster than the set speed), the output of this circuit is lower than 2.5V. when, on the contrary, the paper feed motor rotation signal is slower than the reference clock, the output is higher than 2.5V. (D) PWM circuit The speed deviation signal obtained from the low pass filter in the former stage is integrated and phase-compensated and pulse-with modulated. IC31 is the PWM generator including the error amplifier, the saw teeth waveform generating circuit, the comparator, and the output buffer. It is connected with R96, R46, C1, C66, and the error amplifier in IC31, forming the integration/phase compensation circuit. R17 and C4 determines the frequency of saw teeth waveform. The frequency is approximately 17.5KHz. The voltage of the integrated deviation signal is compared with that of the saw teeth waveform, and the deviation signal becomes a pulse signal of duty ratio in proportion to the deviation signal voltage. In addition, the stationary period adjustment comparator is also included in IC31, and applying a voltage to 4 pin lengthens the OFF period of the PWM signal. The IC 31PWM on daty is bigger when paper feed motor rotation spead is increasing.

13 Output control

VCC 12 Refernce voltage input

Ref Out 14

GND

7

Rt

6

Ct

5

Oscillation circuit

+ Dead time control 4

Low-input malfunction prevention circuit

8

Dead time convertor

T

F / F

PWM output

9 11

-

PWM output

10

+ Error amplifier 1

Non-reverse input

1

+

Reverse input

2

-

Non-reverse input 16

+

Reverse input 15

-

Feedback 3

3

PWM comparator

Error amplifier 2 IC31 (µPC494GS) internal block diagram [Fig. 11]

(E) Over-shoot prevention circuit When the paper feed motor is risen at a low speed, its speed becomes too high in transition. To prevent against this, the circuit lengthens the OFF period of the PWM signal forcibly to suppress power supply to the paper feed motor. This circuit is an integration circuit composed of IC29.1, C24, and R107. When the low speed rising signal outputted from IC23 8 pin becomes LOW, the IC29 1 pin output becomes HIGH. Then the voltage settles to 0V. The time length is set according to the motor rising time. The OFF period of the PWM signal is controlled by inputting the signal to IC31 4 pin.

9 – 21

b. Paper feed motor (DFM), transport motor (DTM) drive circuit +5V

10P CPU 11P C_Limit

R99 1 R71 ERJ8GEYJ202V ERJ6GEYJ331V 2.0K 330 1 2

R70 1 ERJ6GEYJ331V 330 LSI-N9101MTD 2 7 8 MODE2 D 5 6 MODE1 C 3 4 CUE B 9 2 PWM A

2 1

2

1 G

R97 ERJ8GEYJ202V 2.0K

IC19 VCC=+5V GND=SGND

S 3

S 3 Q14 2SJ176

Q13 2SJ176

D 2

D 2 1 G

3 4

A 2 Q4 2SK1895

K 1 A 2

D 2 D11 HRP22

S 3

1

2

1 G

D 2 D16 K 1 HRP22

PWM R103 ERJ8GEYJ202V 2.0K

R100 ERJ8GEYJ202V 2.0K 1

+24V

DFM1 DFM2

CN7.3 CN7.4

Paper feed motor

DFM1 DFM2

CN6.7 CN6.8

Transport motor

Q5 2SK1895 1 G

S 3

2 Limit

+5V

8 CPU

9

78

R52 ERJ6GEYJ103V 10K

R51 1 ERJ6GEYJ103V 10K LSI-N9101MTD 2 7 8 MODE2 D 5 6 MODE1 C 3 4 CUE B 9 2 PWM A IC20 VCC=+5V GND=SGND

R105 ERJ8GEYJ202V 2.0K 1

+24V

1

1 1 2

2

2

R102 ERJ8GEYJ202V 2.0K

S 3 1 G

2 R73 ERJ6GEYJ331V 1 2

S 3 Q16 2SJ176

D 2

D12 K 1 D 2 HRP22 Q2 A 2 2SK1895

1 G

1 G

Q15 2SJ176

D 2

R72 ERJ6GEYJ331V 330 1

R103 ERJ8GEYJ202V 2.0K 1 2

R104 ERJ8GEYJ202V 2.0K

S 3

D 2 K 1 A 2

D13 HRP22

2

7 8 Q3 2SK1895 1 G

S 3

330

[Fig. 12] This circuit controls each motor rotation/stop and the rotating direction. It is composed of the exclusive-use hybrid IC (IC29, IC20) and the power MOSFET (Q2 ~ 5, 13 ~ 16). The paper fed motor drive circuit is composed similarly with the transport motor drive circuit. So only the transport motor drive circuit is described here. The motor rotation, stop, and rotating direction are controlled by combination of logic of the CPU 8 pin and 9 pin outputs. The CPU 78 pin supplies the PWM output for the speed control. In the normal rotation of the motor, 8 pin is LOW, 9 pin is HIGH, 78 pin is HIGH, IC20 2 pin is LOW, 8 pin is HIGH, and Q16 and Q2 turn ON. While IC9 4 pin is HIGH, 6 pin is LOW, and Q3 and Q15 turn OFF. Therefore a current flows through +24V → Q16 → CN6, 7 → motor → CN6, 8 → Q2 → AGROUNG, rotation the motor clockwise. When the CPU 78 pin is made LOW under this state, IC9 2 pin becomes HIGH and Q16 turns off. Therefore the current from +24V is interrupted. However, with the motor coil inductance, a loop current flows through AGROUND → Q1 flywheel diode → CN6, 7 → motor → CN6, 8 → Q2 → AGROUND. In this case, the motor is in the speed reduction state. The motor speed is controlled by adjusting the H/L duty of the PWm signal and controlling the pulse the voltage supplied to the motor. In the reverse rotation, the CPU 8 pin becomes HIGH, IC20 2 pin and 6 pin are HIGH, Q15 and Q3 turn ON, and Q16 and Q2 turn OFF. Then a current flows in the reverse direction to the normal rotation, through +24V → Q15 → CN6, 7 → Q3 → AGROUND. Therefore, the motor rotates counterclockwise. The speed control is performed in the same manner as the normal rotation. To stop the motor, the CPU 8 pin and 9 pin are turned to LOW. Then IC20 2, 4, 6, 8 pins become HIGH, Q15 and Q10 turn OFF, Q2 and Q3 turn ON. As a result, both pins of the motor are shorted and the motor enters the brake mode. In the brake mode, a powerful brake torque is generated to stop the motor.

9 – 22

c. Paper exit speed control circuit This circuit is composed of the paper exit motor speed control IC (IC35), and selects the motor speed from two levels (2503.5/465 rpm) by the signal from the CPU 6 pin. The motor speed can be adjusted with the volume. The low speed (465 rpm) is set with VR1, and the high speed (2503.5 rpm) by VR2. The speed control is described below: IC35 4 pin receives the output pulse from the DEM rotation sensor (DEMRS). IC35 6 pin and 5 pin are connected with R109, VR1 or R53, VR2, and capacitor C6. The time constant of the IC internal timer is determined by C and R constant. The motor speed is determined according to the time constant. IC35 8 pin is used to convert the internal rectangular waveforms into integrated waveforms, and is connected with external C and R for control phase compensation. IC35 9 pin output is inputted to IC28 1 pin, rectified and converted into rectangular waveform, and inputted to IC5 1 pin. The circuit operations when the motor speed falls below the specified level are described below: When the motor speed falls, IC35 4 pin input pulse period is extended. That shortens charging time of capacitor C6 to increase HIGH level area of IC35 9 pin output integrated waveform. Consequently the IC28 duty is increased. As a result, the motor drive effective voltage increases to increase the motor speed. When the motor speed rises above the specified level, the reverse operations are performed, thus maintaining the motor speed at a constant level.

4 CPU

6

HMOT_SPD

1

10 VCC

2 IN-

3 OUTamp

VS 6

GND 7

CRt 5

INsy

K 1 D1 1S1588 A 2

+5V

+5V

HMTCLK

IN+ 1

CF 8

E 3 Q18 FNJL3L

1 B

SGND 1 VR1 PK502H204H0 200K 3

2

C 2

1 VR2 PK502H204H0 20K 1 3

R53 ERJ6GEYJ103V 10K 1 2

2

SGND C6 5DF2D103J 0.010µF

1 2

R109 ERJ6GEYJ104V 100K

R55 ERJ6GEYJ103V TP37 10K 2 IC28.1 9 5 OUT + 1 2 4 µPC339G2 1 R127 1 ERJ6GEYJ242V R7 2.4K ERJ6GEYJ473V 2 47K 2 1 C26 50TNSS1M 2 1.0µF

SGND

1 C6 5DF2D223K 2 0.022µF

2

SGND

[Fig. 13]

d. Shutter-solenoid (SSOL) drive circuit

CPU 13pins

TP33 1

+5V R62 1 ERJ6GEYJ103V 10K R142

R110 ERJ6GEYJ104V 100K 1.0µF ERJ6GEYJ102V 2 1 2 2 1 + C27 1K 50TWSS1N

+5V D10 1 K 1 DSA010

R63 ERJ6GEYJ103V 10K 1 2

CLK1

IC6.5 2 A 2

11

AY

IC2.4 10

HD74HC14FP

9

AY

8

D9 DSA010 1 2 K A

HD74HC04FP

+5V E 3 4 A 6 1 Y 5 B B IC11.2 HD74HC32FP

Q21 1N1L3N D9 DSA010 2 1 A K

C 2

D 2

1

1 G

S 3 R143 ERJ6GEYJ751V 2 750

+24V +24V S_SOL

Q8 2SK1283 Limit

[Fig. 14] This circuit drives the shutter solenoid which operates the original bundle stopper plate, and is composed of the PWM control circuit which suppress temperature rise in the solenoid winding and the power MOSFET, etc. The differential circuit is composed of C27, R142, R110, and D10. IC6.5 and IC2.5 are inventors for rectifying waveforms. When the CPU 13 pin is turned to LOW, a LOW level one-shot pulse of about 70ms is generated at the IC2 8 pin. During that operation, Q8 gate is fixed to HIGH. So +24V is continuously applied to the solenoid to absorb the iron core. When the one-shot pulse is completed, Q8 is driven by duty 50% frequency 10KHz pulse signal . Accordingly solenoid ON duty also becomes 50%. Under this state, even in OFF period of Q8, a loop current flows through D14 by the solenoid inductance. The average value of current becomes 1/2 of the case of 100%, and power loss (heat quantity) in the solenoid winding becomes 1/4. In addition, the absorbing power of iron core is reduced by half. However, the solenoid characteristics provides enough power when the iron core is completely absorbed, and the iron core is not released even when the current reduces to 1/2. In this manner, 100% power is supplied to the solenoid only when absorbing the iron core, and the iron core is attracted by strong power. After absorption, the current value is reduced to 50% to limit temperature rise in the solenoid.

9 – 23

e. Reverse solenoid (DRSOR)

TP33 CPU 4pin

1

+5V R60 1 ERJ6GEYJ103V IC6.1 10K 2 1 2 AY

R120 ERJ6GEYJ511V 510K 1 2

HD74HC14FP

1

CLK1

2

+5V 1 R61 ERJ6GEYJ103V 2 10K

D2 1S1588 1 K

2 A

C30 50TNSS10M 2 10µF TP30 SGND 1 + 1

+5V R129 1 ERJ6GEYJ242V 2.4K 2

1 C60 GRM40B273K25P1 2 0.027µF

R139 ERJ6GEYJ102V 1K

K A

ZD5 2 RD3-0MB2

IC28.4 11

SGND

SGND

+5V 1 R140 ERJ6GEYJ102V 2 1K

1

10

+

13

D2 1S1588

µPC339G2

2 A

1

R141 ERJ6GEYJ102V 2 1K

1 K

D 2 1 G

+24V

3 4

+24V CN6.3 DRSOL CN6.4

Q2 2SK1283 S 3

Limit

[Fig. 15] This circuit drives the reverse solenoid which drives the reverse guide which guides the original to the reverse pulse when reversing the original. It is composed of the PWM circuit and the power MOSFET to reduce the operation noise. When the signal of pin number 4 from CPU is high level to low. The 11 pin level of IC 28 is growing gently. The R120, D2, R61 and C30 are consifted of integration circuit The delay time is approximately 70 ms. On the other hand, the integration circuit is connected from R139, R129, C60, and ZD5 to the oscillation circuit to generate cyclic saw teeth waveforms. The frequency of saw teeth waveform is 100us, which set at shorter level than non-reverse. Therefore, the comparator output frequency is constant, and it becomes the pulse waveform whose duty at HIGH level slowly increases from 0% to 100%. The PWM signal generated by the comparator is inputted to the Q7 gate to pulse-drive the solenoid. Q7 repeats ON and OFF in a short period. However, a loop current flows through D15 with the solenoid inductance, and the solenoid current is not cut off. In this manner, the solenoid is driven by the PWM signal whose ON duty is gradually increased in absorption (when in ON), that is the absorption operation is performed moderately, reducing the noise.

f. Transport motor brake (DTB) drive circuit

D5 HRP22 2 1 A K

+5V 1

2 CPU

R64 ERJ6GEYJ103V 10K

IC6.2

3

ACLY

4

HD74HC14FP

R138 ERJ6GEYJ102V 1K 1 2

+24V 5

6

+24V

CN6.5

DTB

CN6.6

C2

1 B

Q1 2SD1616 E3

R95 ERJ6GEYJ472V 4.7K 1

2

Limit

This circuit drives the brake of the transport motor. The drive signal (ON at LOW) from the CPU is logic-inverted by the invertor (IC6,2) and inputted to the transistor Q1 base. [Fig. 16]

9 – 24

3 Other circuits a. Current limiting circuit +24V R101 1 ERJ6GEYJ202V 2.0K 2 +5V R6 R128 1 ERJ6GEYJ102V 1 ERJ6GEYJ242V 1.0K IC28.2 IC19.20 2.4K R116 µPC339G2 3pins 2 2 ERJ6GEYJ100V 6 1 2 1 + 7 10 1 V+=+5V C55 1 GND=SGND 2 GRM40B273K25PT R5 0.027µF ERJ6GEYJ201V 2 200

R58 ERJ6GEYJ103V 10K 1 2

Each motor Limit 1

K 1 ZD3 RD5-1MB2 A 2 5.1V

2

R146 R55X20-39J 0.39

SGND

1

2

R146 R55X20-39J 0.39

1

2

R146 R55X20-39J 0.39

PGND

PGND

[Fig. 17] This circuit limit the motor current ??????? to be a constant level, and is composed of the current detection resistor and the voltage comparator. The negative sides of each motor, the solenoid, and the brake are connected to the pickup resistors R144 ~ 146. The current flowing through each drive circuit is converted into a voltage by the pickup resistors. The voltage is compared with the reference value by the comparator of C28,2. The reference voltage, about 0.3V, is obtained by dividing the zenor voltage with R5 and R6. When the pin number 6. of IC 28-2 this circuit has limit function for motor current at sfurting, exceeds the reference voltage, IC28.2 1 pin is inverted to LOW, and interrupting the supply to the motor. Thus the current is limited to a proper level.

b. Oscillation circuit There are three oscillation circuits: two (1414Hz, 429Hz) for driving the paper feed motor, and one (33KHz) for driving the stopper solenoid and the reverse solenoid. The three circuits are of the same composition, therefore only the paper feed motor drive circuit (429Hz) is described below: The rectangular wave oscillation circuit of positive feedback is composed of IC36.2, R21, R22, R23, R24, and C63. When IC36 7 pin becomes HIGH, C63 is charged by 5V through R118 and R24. In this case, since R23, R118 and R21 are in parallel, the non-reverse input of IC36 (IC36 5 pin) rises to about 3.3V. As C63 is charged, when C63 terminal voltage, that is, IC36 non-reverse input (IC36 6 pin) exceeds the non-reverse input, IC36 output is inverted to LOW, discharging electric charges in C63 through R24. At that time, R22 and R23 are in parallel. Consequently the non-reverse input falls to 1.7V. As C63 discharges, when the terminal voltage falls below the non-reverse input voltage (1.7V), IC36 output is inverted again to HIGH. This operation is repeated to generate oscillation waveforms. +5V 1 +5V R76 R75 ERJ6GEYJ153V ERJ6GEYJ153V 1 R119 15K 2 15K ERJ6GEYJ511V 1 2 510 IC28.3 2 TP31 IC7.2 µPC339G2 9 + 14 1 3 4 ACLY CLK1 1 8 R77 HD74HC14FP ERJ6GEYJ153V 15K 2 R16 2 1 ERJ6GEYJ223V 1 22K C73 2 GRM40B102K50PT 1000PF SGND +5V R111 ERJ6GEYJ104V 100K

+5V

1 R112 ERJ6GEYJ104V 2 100K 1 2

5 R113 ERJ6GEYJ153V 100K

1

2

IC30.2 µPC339G2 + 7

+5V 1 R117 ERJ6GEYJ511V 510 2

TP35 1 13

6 V+=+5V GND=SGND R114 1 2 ERJ6GEYJ753V 1 75K C7

IC8.6 ACLY

12

1

+5V R23 ERJ6GEYJ513V 1 R118 ERJ6GEYJ511V 2 51K 2 1 510 IC36.2 2 TP34 IC7.2 µPC339G2 5 + 7 1 11 10 ACLY KMTP1=2 1 6 R22 HD74HC14FP ERJ6GEYJ513V 51K R24 2 1 2 ERJ6GEYJ513V 1 51K C63 R21 ERJ6GEYJ513V 51K

KMTP1=1

HD74HC14FP

2 GRM40B682K50PT 6800PF

2 GRM40B333K50PT 0.033µF

SGND

SGND

[Fig. 18] 9 – 25

c. Reset circuit RESET output +5V

VCC=+5V GND=SGND

D6 DSA010

2

5 VCC CK C31 1 +RES GRM40F104Z IC22 -50PT MB3773FP CT 2 0.10µF 4 GND VREF

C17 GRM40F102Z50PT 1000PF

3

2

K 1

8 1 6

1

1

2

2

JP2 R136 ERJ6GEYJ102V 1K C24 50TMSS1M 1.0µF

7 1

A 2

1 2

SGND

CPU clock

[Fig. 19] This circuit generates the reset signal for the CPU and the external I/O LSI, and is composed of IC22 and its peripheral devices. IC22 has integrated reset functions, such as power ON reset, +5V abnormal drop reset, and watch dog timer. When the power line (+5V line) reaches about 0.8V after supplying the power, IC22 starts operations. IC22 8 pin becomes LOW to reset the CPU and IC24. The reset state is held until a certain time passes after the power line reaches about 4.3V. The reset hold time is determined by the capacity of C24. It is about 100msec for this circuit. When the reset hold time passes, IC22 8 pin becomes LOW to output the reset signal. The reset state is held so long as the power voltage is lower than about 4.3V. The reset state is cancelled after 100 msec from when the power voltage reaches about 4.3V. IC22 3 pin is the watch dog timer clock signal input pin. It uses the original size detection circuit select signal outputted from IC24 22 pin as the clock. When the CPU operates normally, the clocks serve as regular pulse signals of about 100us wide and 5msec frequency. When, however, the CPU is out of order, the clocks are not supplied. Ic22 always monitors this clock. If the clock is terminated, IC22 8 pin becomes LOW after a certain time to output the reset signal. The monitoring time of the clock is also determined by the capacity of C24. It is also 100msec for this circuit similarly to the power ON reset hold time. Hard reset can be performed from the PPC body through the communication cable. In this case, CN3-6 pin is turned to HIGH or opened to reset.

d. EEPROM (IC23) circuit

+5V A 2 K 1 1

2

D3 SB02-030

R108 E2ROM5V ERJ6GEYJ104V 100K 1 2

IC23

R115 ERJ6GEYJ100V 10

D0 CS

+ 1 C74 2STMSS100M 2 100µF

6 7

ORG TEST

SK D1

4

K 3 D1 SB02-030 R12 A 2 ERJ6GEYJ223V 22K 1 2

1 2

R39 ERJ6GEYJ103V 10K 1 2

R13 22K 1

2

3

ST93C46AM1

SGND

+5V

E2_DO

59

E2_CS

16

E2_SK

15

E2_DI

14

R14 22K 1

VCC=E2ROM5V GND=SGND

2

P46/AN6 P63/*Prdy P64/A0 P65/*CS

CPU

R15 22K

1

2

R40 ERJ6GEYJ103V 10K

1

1 R41 10K

2

1 R42 10K

2

2

[Fig. 20] This is a memory to store the adjustment values such as the sensitivity data of reflection type sensors and the original set position data on the glass, and the counter values such as the total number of originals passed. Data communication with the CPU is made through 3-wire serial interface. The data one stored are retained even when the power is turned off. IC23 1 pin is the chip select pin. It is turned to HIGH when data communication is performed. 2 pin is the serial clock pin, and serial data are sent in synchronization with the clock inputted to this pin. 3 pin is the input pin of serial data from the CPU. 4 pin is the output pin of serial data from IC20. D3, R115, and C74 forms a circuit which keeps IC23 power voltage level in case of power failure during data writing.

9 – 26

+5V

B4B-PH-K-S

A LED TLN119 K

+5V

CN-1

VOUT

CN-2

LED

CN-3

GND

CN-4

C PTR PH110

RL

E GND

+5V

53254-0210 +5V

A

CN-1

53254-0210

LED TLN119

LED

CN-2

K

53254-0210 Vout

C

CN-2

53254-0210

PTR TPS616

GND

CN-1

E GND

9 – 27

[10] COMMUNICATION 1. General description The system is designed to improve efficiency in servicing, allow for more precise customer account control. This system also allows for the monitoring of machine’s performance by remote control of meter reading, remote diagnosis, and read/write of various adjustment values by the host computer using telephone lines. The communication unit systems are largely classified into two categories: system A and system B. In system A, copier counts are based on the pulse signal outputted from the copier during every copy cycle. In system B, a wider range of information can be controlled such as counter totalizing, troubles, jam, remote maintenance, and marketing data.

2. System A

Communication control section

ROM (1MB)

LIN

Telephone Line

NCU TEL

CPU

RAM (32KB) Telephone

RTC Power control

AC adapter

Copier interface

PPC

AC/DC

Count input SW

SW

[Fig. 1] Block diagram In System A, the personal counter signal (count up pulse) is output from the copier, sensed and counted up. The data is written into the RAM which is backed up by a battery. Since in internal RTC (Real Time Clock) is provided, the count data is transmitted (usually at night) through the telephone line to the host computer when the time set in the RAM is reached. System A is usually with a low cost copier and an existing telephone line at the customers’location. In System A, communication is one way, from the terminal to the host.

(1) Functions of System A System A provides the following functions: 1 Meter reading by periodic transmission 2 Sense switch of start and end time of servicing

10 – 1

3. System B

Communication control section

ROM (1MB)

Telephone Line

LIN NCU TEL

CPU

RAM (32KB) Telephone

RTC Power control PPC

RS-232C

AC/DC AC adapter

Copier interface

SW

SW

[Fig. 2] Block diagram System B is designed for medium or high class copiers. Communication in System B is performed with a specially provided telephone line. An existing telephone line can also be used, although communication is made only from the terminal in a similar manner to System A. When a special line is provided, the bi-directional communication is allowed, where either the host or the terminal can initiate communication. The communication unit processes and stores information sent from the copier every time a copy is completed or a jam or trouble occurs. The data is sent to the host computer when an access is made from the host computer. It is also possible to make an access to the host computer to transmit information by using trouble data transmission from the copier as a trigger.

(1) Functions and applications of system B

Automatic billing (meter reading) Automatic service call Jam history read Trouble history read Read/write of simulation data PC/modem set value change

✕ F ✕ ✕ ✕ ✕

Service engineer ✕ ✕ F F F F

Read/reset of department counter Key operator program data read/write Confirmation of start and end time of servicing ROM version confirmation Check of the quantity of copy originals for each job Check of use frequency of each copy mode Supply parts stock control Machine status check Service engineer control Copy inhibition when PC/modem is not installed Tag number (grade up No.) change

F F ✕ ✕ ✕ ✕ F F ✕ ✕ ✕

✕ ✕ ✕ F ✕ ✕ ✕ F ✕ ✕ F

Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

✕: Not applicable

F : Applicable

User

k : Applicable if required

10 – 2

Dealer

Subsidiary

F F F F F F

F k k k k k

✕ ✕ F F ✕ ✕ F F F F F

✕ ✕ k k ✕ ✕ k k k k k

(2) Functions of system B All the functions of system B are listed in the table below: Function

Data content Total

1 Automatic billing (meter reading)

Maintenance Duplex Counter by function

• The counter value of each data listed in the right column can be automatically read through the telephone line, and also can be read by the periodic transmission started by the terminal.

Staple ADF Tray 1 Tray 2 Tray 3 Trouble Jam in PPC body

Counter by paper size

User total (effective paper)

DV counter

Jam in RADF

DV counter (Black)

2 Automatic service call

During execution of simulation . Status data

• When a trouble occurs or in the case of maintenance, a trouble code and the status data immediately before occurrence of the trouble or the service code are automatically transmitted. For the trouble codes, refer to the Service Manual of the copier. For status data and service codes, refer to the column in the right.

At initializing after power ON or cancellation of simulation.

Trouble state Jam state Door open state Warm up state During copying Wait state

Key operator call

Service call

Power OFF state

10 – 3

Maintenance

Toner empty Waist toner full Low toner

Function

Data content

3 Jam history read

Jam position code

• Data on sensor names and sensor positions, document size, paper size, and the paper feed unit when jams occurred can be read. In the case of the SD-2060, for example, each sensor position for the data in the column in the right can be read.

Tray 2

Tray 3

DUP

PPD1

PPD2

PPD3

MPFD

PSD

POD1

POD2

DPID

DPPD

REV

BYPASS/BYPAS

PFD1

PFD2

PFD3

DPFD

DSBD

OGFD

SB

SPID

SPOD

OGST

EXT

At initializing when power ON or after cancellation of simulation

4 Trouble history read

Simulation No. input wait state Status data

• When a trouble occurs, the trouble code and the status code just before occurrence of can be read. For the trouble codes, refer to the Service Manual of the copier. For the status data just before the occurrence of the trouble, refer to the right column.

Tray 1

During execution of simulation Trouble state Jam state Door open state Warm up state During copying Wait state Power OFF state

5 Read/write of simulation data

For the contents of data for simulation, refer to the Service Manual of the copier. • Simulation data (set values, etc.) of each copier can be read and simulation can be executed. For the contents of simulations, refer to the Service manual of the copier.

6 PC/modem set value change • The PC/modem set values of the data listed in the right column can be changed.

PC/Modem set value

PC/Modem ID

10 – 4

PPC ID Host 1

TEL #1

Host 3

TEL #1

Host 1

TEL #2

Host 3

TEL #2

Host 1

TEL #3

Host 3

TEL #3

Host 1

TEL #4

Host 3

TEL #4

Host 2

TEL #1

Host 4

TEL #1

Host 2

TEL #2

Host 4

TEL #2

Host 2

TEL #3

Host 4

TEL #3

Host 2

TEL #4

Host 4

TEL #4

Function

Data content

7 Read/write of department counter key operation data (1) Read/reset of department counter • When controlling the built-in department counter with the copier, the counter data by department can be read (2) Key operator program data read/write Read/write of the following key operator program can be performed.

No.

Key ope. No.

1

22

2 3

Program content

READ

WRITE

Data

Toner save mode setting

F

F

1: YES 2: NO

20

Automatic exposure value adjustment

F

F

AE exposure level: 1 ~ 5

26

Margin shift reference value setting

F

F

Side 1: 1 ~ 6

F

F

Side 2: 1 ~ 6

Remark

4

42

Selection of margin shift direction

F

F

1: YES 2: NO

5

70

Setting of paper auto selection mode

F

F

1: YES 2: NO

6

74

Inhibition of use of ADF

F

F

1: YES 2: NO

7

77

Inhibition of selection of tray the cover paper/mark paper insertion mode

F

F

1: YES 2: NO

8

78

Locking of paper feed tray

F

F

1: YES 2: NO

9

75

Inhibition of duplex copy

F

F

1: YES 2: NO

10

76

Inhibition of use of stapler

F

F

1: YES 2: NO

11

72

Inhibition of the malt paper feed at the Bypass tray in the duplex mode

F

F

1: YES 2: NO

12

73

Inhibition of job program rewrite

F

F

13

71

Inhibition of automatic selection of tray

F

F

14

46

Inhibition of operation

F

F

1: YES 2: NO

15

43

Erase width mode setting

F

F

Print density: 1 ~ 3

16

25

Copy quantity setting input limitation

F

F

Max. number of paper quantity setting

(1 ⇒ 999)

17

27

Erase width setting

F

F

EDGE: 1 ~ 3 CENTER: 1 ~ 3

(SEC ⇒ NO)

18

44

Registration of mark paper insertion position

F

F

1: YES 2: NO

19

45

Selection of message display time

F

F

Display time: 1 ~ 5

10 – 5

1: YES 2: NO 1: YES 2: NO

Function

Data content

9 ROM version confirmation • ROM data version can be confirmed as shown in the right column.

Control ROM

• Start and end time of servicing can be confirmed by performing simulation at start and end of servicing.

Service start/end code

8 Confirmation of start and end time of servicing Service start

Service end

Master ROM Slave ROM Mirror ROM Finisher ROM

• Job contents listed in the right column can be checked. (This fanction does not work in this model.)

Data ROM 1 (English) Data ROM 1 (Japanese) Data ROM 1 (German) Data ROM 1 (French) Copy quantity Quantity of originals Department code

G Check of use frequency of each copy mode • Copy mode data listed in the right column can be checked.

OC

(This fanction does not work in this model.)

Original handling units

Copy mode

(R) ADF

RDH

CFF

UDH

10 – 6

Duplex mode Duplex mode Duplex mode Duplex mode Duplex mode

F Check of the quantity of copy originals for each job

Job content

Data ROM

RADF ROM

S to S S to D D to S D to D S to S S to D D to S D to D S to S S to D D to S D to D S to S S to D D to S D to D S to S S to D D to S D to D

Function

Data content Manual paper feed Cassette 1 Cassette 2

Paper feed unit

Cassette 3 Cassette 4 Cassette 5 Cassette 6 Intermediate tray Tray 1 Tray 2 Tray 3 Tray 4 Tray 5 Tray 6 A3 B4

Original paper size

Horizontal feed

A4 B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX A3 B4

Original paper size

Vertical feed (R)

A4 B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX

10 – 7

Function

Data content A3 B4 A4 B5

Copy paper size

Horizontal feed

A5 12" (UK) 13" (SCA) WLT LG LT IV EX A3 B4 A4

Copy paper size

Paper feed (R)

B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX Mark paper insertion mode (OHP)

NO

Cover paper insertion mode (OHP)

NO

Mark paper insertion mode

NO

Cover paper insertion mode

NO

1 set 2 copies mode

YES YES YES YES NO YES No setting

Binding margin mode

Front surface Rear surface Both surfaces

Frame erase mode

NO YES

Center frame erase mode

10 – 8

NO YES

Function

Data content Interruption mode

NO YES No setting

Sorter mode

Group Sort

Staple mode Offset

NO YES NO

Toner empty Copy quantity Quantity of originals Department code Original handling units

• Information on copy quantity, paper size, toner empty state are sent from the copier to check supply parts history information every time when copying is completed.

OC

(R) ADF

Copy mode

Manual paper feed Cassette 1 Cassette 2 Cassette 3 Paper feed unit

Cassette 4 Cassette 5 Cassette 6 Duplex tray Tray 1 Tray 2 Tray 3 Tray 4 Tray 5 Tray 6

10 – 9

Duplex mode Duplex mode

H Supply parts stock control

Key ope. call

YES

S to S S to D D to S D to D S to S S to D D to S D to D

Function

Data content A3 B4

Original paper size

Horizontal feed

A4 B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX A3 B4 A4 Original paper size

Vertical feed (R)

B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX A3 B4

Copy paper size

Horizontal feed

A4 B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX

10 – 10

Function

Data content A3 B4 A4

Copy paper size

Paper feed (R)

B5 A5 12" (UK) 13" (SCA) WLT LG LT IV EX Mark paper insertion mode (OHP)

NO

Cover paper insertion mode (OHP)

NO

Mark paper insertion mode

NO

Cover paper insertion mode

NO

1 set 2 copies mode

YES YES YES YES NO YES No setting

Binding margin mode

Front surface Rear surface Both surfaces

Frame erase mode Center frame erase mode Interruption mode

NO YES NO YES NO YES No setting

Sorter mode

Group Sort

Staple mode

10 – 11

NO YES

Function

Data content At initializing when power ON or after cancellation of simulation

I Machine status check • Machine status data listed in the right column can be checked.

Discharge the invalid document state Status data

During execution of simulation Trouble state Jam state Door open state Warm up state Copy state Wait state Power OFF state J Service engineer control Confirmation of Start/end time of • Same as 8 Confirmation of start/end time of servicing.

K Copy inhibition when PC/modem is not installed • As shown in the right, selection can be made between copy inhibition and copy enable. • Copy inhibition (PF trouble) mode can be cancelled with simulation of the copier. • When PC/modem is not installed or in case of communication trouble between PC/modem and the copier, selection between copy inhibition and copy enable can be made with the copier simulation.

Copy enable/ Copy inhibition

• Same as 8 servicing.

L Tag number (grade up No.) change

Copy stop

Copy stop cancel

For the contents of simulations, refer to the Service Manual of the copier. • Tag number stored in the copier can be read by simulation of the copier. Write of tag number can also be made.

10 – 12