Simtron Tv-2122 Chasis 3y03

SERVICE MANUAL JD-TV9021 (3Y03 CHASSIS)

Design and specifications are subject to change without prior notice. ( ONLY REFERRENCE)

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ENGINEER BY:

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CHECKED BY:

PPROVED BY:

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Contents Safety Notice...............................................................2 Technical specification..................................................3 Chassis Block Diagram..................................................4 IC Block Diagram .......................................................5-7 Transistor mark ........................................................... 8 Chassis wiring diagram ................................................ 9 PCB Top layer............................................................ 10-11 Service Adjustments ................................................ 12-18 Purity and Convergence Adjustment ............................19 Control Location ........................................................... 20 Input and Output Terminals ........................................... 21 Operation Instructions.................................................22-23 Mechanical Disassemblies............................................. 24 Cabinet parts List ........................................................... 25 Circuit Diagram..............................................................26

Safety Notice SAFETY PRECAUTIONS 1:An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set. 2:Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet, on the chassis or the picture tube. 3:When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly,such as,control knobs, adjustment covers or shields, barriers,isolation resistor-capacitor networks etc.. Before returning any television to the customer,the service technician must be sure that it is completely safe to operate without danger of electrical shock.

X-RADIATION PRECAUTION The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X-RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specfied limits, take necessary corrective action. Carefully follow the instructions for +B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.

PRODUCT SAFETY NOTICE Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark ! in the parts list and the schematic diagram designate components in which safety can be of special significance. It is particularly recommended that only parts designated on the parts list in this manual be used for component replacement designated by mark ! . No deviations fromresistance wattage or voltage ratings may be made for replacement items designated by mark ! .

-2-

-3-

Ic002

27 28

14

19

30

29

TUNER

SCL

EEPROM

SDA

21

20

22-25

SDA/SCL

H.SYN

V.SYN

RGBY

AFC

VIDEO

RF-AGC

POWER

Ic001

-4-

LC863224A-5V23

5V

9V

21V

110V (B+)

10

40

11 12

PRE.AMP

14-17

4

5

I c201

2

TV-AUDIO

28 27

L A76814

6

SAW.FIL

19-21

40

9V/12V

H-FBP

23

41

VIDEO-IN

H-OUT

V-OUT

24V

I c401

FBP

HORIZONTAL DEFECTION

I c301 La7840

VERTICAL DEFLECTION

RGB AMP

HEF4O52BP

HEF4O53BP

Ic400

AUDIOIN AV1/AV2

IC403 La4285

SCREEN

FOUCS

CRT

VIDEO-OUT

VIDEOIN AV1/AV2

SPEAKER-R

SPEAKER-L

Chassis Block Diagram

-5-

1000p 6

SA W FI L T E R

5

0.01u(

8

1u

9

AF

10

11

12

A BL

G IN

15

B IN

16

FB IN

17

18

G OU T

20

22 V cc

B OU T

21

23

VER OU T

56p 100 5.6k

0.1u( )

0.1u( )

0.1u( )

1K

0.022u(

)

Sync Out

VER RAMP

VER C/D

VER SEP

32

24

31

)

VCC 12V)

10u (9

0.01u R OU T

19

33

25

HOR V cc

150 HOR VCC(9V)

A F C2

FB P

28

26

27

HOR OU T

HOR OU T

P H ASE S H I FTE R

HOR C/D

1/256

HOR VCO

29

A FC 1

30

0.01u

0.33u(

100

1K 100

0.1u

)

LA 76814K BLO CK D I A GR A M

R IN

14

D R I V E /CU TO FF

OSD SW

RGB MA T R IX

CON T RAST BRIGH T

COL OR CL AMP

XRA Y

34

0.33u(

BU S BU S DA T A CL OCK

13

CL AMP

OSD CON T RAST BRIGH T

BL ACK ST RET CH

DEMO

35

ACC KIL L ER

36

A PC 1

37

10u

IF VCC

100

0.01u

7

ABL

TI N T

V CO

38

B PF (ON/O FF)

39

1u

IF IN

VC

4

BU S

SYN C SEP

40

REF

3K

RF

3

IF Vcc 5V

PE A K I N G CORIN G

DEL AYL I N E

TR A P

SW

41

HOR GN D

7.5K

AU DIO OU T P

2

RF AGC

V IF

0.47u

1

10u

IF AGC

1000p

DC V OL

0.01 42

10K

1u 1K

SW

3K

FM DET

330 0.47u

VIDEO DET

2.2u

T RAP

1u 680K

LI M A MP

1K A FT

47u CL AMP

0.01u

VIDEO SW

43

1u

CL AMP

44

10u

45

16p

46

0.01u

VIDEO AMP

47

24K

B PF

48

1000p

A 2C P L L

49

24K

50

0.47u

1K

SP L L

51

V/ C GN D

4.7K MetalF il m(1%)

B PF

52

1K 330

330p

53

VCO COIL

SVO

FB P IN

10K

54

10p

EXT -AU DIO IN

V/ C VCC EXT -V IN IN T -V I N [Y-IN ] [S-C IN ] 15uH

IC Block Diagram IC 201 (IIC BUS SINGLE CHIP VIF,SIF,VIDEO CHROMA) LA76814K 150

0.015u

)

100K 100K

0.01u

30K

IC Block Diagram IC301 LA7840

PUMP UP THERMAL PROTECTION

-

AMP

6 Vcc

OUTPUT STAGE Vcc

Ver.OUTPUT

7 PUMP UP OUT

5

3

2

GND

4

INVERTINO INPUT

1

NON INV.INPUT

+

IC 403(3W AUDIO OUTPUT)LA 4285

+ -

EVR

1

2

3

4

5

6

7

8

9

10

VCC

5V +

INT

+

PRE

+

+

PWR GND

GND

EXT

RL 8 INT/EXT EVR SM CONT

-6-

D.C.

PWR NF

IC Block Diagram IC602 STR-G6653 4

VIN

1 D START

LATCH

O.V.P

DRIVE

2 REG. O.S.C

T.S.D

S

+ Vth(1)

5

Comp1

O.C.P/F.B

+

Vth(2)

Comp2

3 GND

IC603
TRANSISTOR> TLP621

TLP621 1

4

2

3

1:ANODE 2:CATHODE 3:EMITTER 4:COLLECTOT

IC203,Q609,IC601&IC302 L7800 SERIES INPUT

REFERENCE VOLTAGE

SERIES PASS ELEMENT

1

CURRENT GENERATOR

STARTING CIRCUIT

REFERENCE VOLTAGE

OUTPUT 2

SOA PROTECTION

ERROR AMPLIFIER

THERRMAL PROTECTION

GND 3

-7-

Transistor Mark

NPN

PNP

PNP

L7809

INPUT

B

C

E

E C

B

E C

C27 17

D2499

C18 15

E C

B

A1015

C21 20

C24 82

A966

E C B

E C

B

NPN

NPN

PNP

B

B E C

L7812

OUTPUT GND

INPUT

OUTPUT GND

-8-

L7805

INPUT

OUTPUT GND

Chassis wiring diagram CN 601 AC IN CN 301 TO CRT BOARD

CN 301B FROM CN 301 SCREEN

CN 302

FOCUS

CN401 TO SPEAKER

CN 201B FROM CN 201

CN 405 TO FRONT AV CN 001 TO CONTROL

CN 201 TO CRT BOARD

-9-

MAIN PCB Top Layer

-10-

CRT, FRONT AV&CONTROL PCB Top Layer FRONT AV & CONTROL PCB TOP LAYER

-11-

Service Adjustments Please notice the following before alignment and equipment 1. Don’t short any two soldering points, which should not be shorted and don’t touch any components, which should not be touched. 2. Please pull out plug before equipment. 3. For safety reasons, all components equipped or replaced should be identical with BOM. 4. Must be warm up for 30 minutes or more and degauss CRT thoroughly with demagnetizer before alignment. The data of EEPROM must be stored before the adjustment for main chassis. And EEPROM must be corrected by the correct file “3Y03_ROM_CORRECT.hex” to avoid signal of CH6 weaken. R.bias, G.bias, B.bias, R.drv, G.drv, B.drv should be set to proper values. Sub_bright is set to 63 usually.

Tools and equipments for adjustment 1. 2. 3. 4. 5. 6. 7.

small “-“ screwdriver screwdriver without inductance Pattern Generator DC Regulated power supply Digital Voltmeter Sweep Signal Generator 20MHz 2-channel Oscilloscope

Signal condition ITEMS

LOGO

PICTURE CARRIER

PATTERN

SYSTEM

1

CH14

471.25 MHZ

COLOR BAR

NTSC/M

2

CH3

61.25 MHz

GRAY SCALE

NTSC/M

3

CH8

181.25 MHz MONOSCOPE

NTSC/M

4

CH12

205.25 MHz

NTSC/M

CROSS HATCH

SOUND MODE MONO 1KHz BTSC 0.3k,3kHz MONO MUSIC MONO 1KHz

REMARK

Adjust for main chassis PIF Adjustment (45.75MHz)

a. Tuner AGC connects to GND. Pattern Generator outputs 45.75MHz I.F. signal (70dbµV)and connects to SAW filter output terminal through a capacitor . b. Connect Digital voltmeter across C227. DC Regulated power supply positive terminal output +14V to C617. c. Adjust L203 coil to obtain 3.6V Digital voltage meter reading.

NOTE: To cancel this adjustment , L203 can be adjusted before inserted to the chassis with a special equipment.

-12-

Service Adjustments B+ adjustment a. b. c. d.

Disconnect horizontal load. Connect a bulb (100 W) AC 250V across C321. Add 220V AC 50HZ to CN601 and switch on power switch. Test the voltage with digital voltage meter between C321 two terminals. Adjust VR601 to obtain +110V¡À0.5V.

AGC alignment a. Receive 60dB RF signal. Connect Digital voltmeter positive terminal to tuner AGC terminal and negative terminal to GND. b. Press “MENU” key, then press “Q.VIEW” key, “MUTE” key in turn on telecontroller. TV SET will go to factory mode. Press “TIMER” key to go to the next factory menu. Go to MENU5 status by this means. Press “MENU” key to exit factory mode. c. Select RF.AGC by pressing “CH+” and “CH-“keys. Adjust “VOL+” and “VOL-“ keys to obtain 4V Digital voltage meter reading.

COMPLETE MACHINE GENERAL ADJUSTMENT Go to factory mode according to 4-2-2 before warm up line Focus Adjustment a. Receive monoscope pattern. b. Set TV to work in dynamic status. c. Adjust the focus knob of FBT to get the clearest picture.

Screen Voltage Adjustment a. Check the R.bias, G.bias, B.bias, R.drv, G.drv, B.drv and sub_bright. Go to factory mode “MENU2” status according to 4-2-2. Usually G.bias should be same as the value of auto white balance equipment. And SUB_BRIGHT is 63. b. Set Cross_BW ‘3”. Then the picture will be a white “+”. Cross_BW is in factory menu 3. c. In menu 5, select SUBB.ADJ and set it to “1”. Adjust the screen knob of FBT to get a faintness “+”. d. Restore the SUBB.ADJ to “0” and CROSS.BW to “0”.

White Balance Adjustment (Applied in factory) a. Set TV AV status in custom mode(Or other mode need for the adjustment) . Receive black white pattern. b. Insert six-row-wire into CN002.Press adjustment keys, and then go to automatic white balance adjustment. c. PIN DISCRIPTIONN OF CN002: 1£ºSDA£¬ 2£ºSCL£¬ 3£ºGND£¬ 4£ºGND£¬ 5£ºSCL£¬ 6£ºSDA¡£ d. After adjusting well, pull out six-row-wire.

-13-

Ver tical size and pincushion adjustment

Service Adjustments White balance adjustment (Applied when servicing) a. Set TV AV status and receive GREY SCAL. b. The one sampling tube of CRT color analyzer (CA-100) covers on GREY signal and the another covers on white signal. c. Go to factory mode “MENU2”. Obtain GREY signal X=281 and y=311 by adjusting R-CUT and B-cut. Obtain white signal X=281 and y=311 by adjusting R-DRV and B-DRV. Obtain both X=281 and Y=311 by adjusting the two status repeatedly.

Sub_bright

adjustment

Receive the gray scale . Get into the menu5 of factory mode. Set SUBB.ADJ to “1”. Then option to get a scale to be seen a little brightness(Only two rows can be seen).

adjust the SUB..BRI

Vertical Size and PinCushion Adjustment a. Receive monoscope pattern. Set TV standard status. Adjust V.size to obtain picture’s vertical redisplay ratio more than 90% in factory mode “MENU1”. b. Receive cross hatch pattern. Set TV standard status. Adjust V.LINE and V.SC to obtain picture’s vertical pin cushion a good status in factory mode “MENU1”. c. Receive cross hatch pattern. Set TV standard status. In factory mode “MENU1” adjust V.POS to obtain picture’s vertical center at the center of CRT screen.

Horizontal Center Adjustment and horizontal position of OSD adjustment a. Receive monoscope PATTERN. Set TV standard status. Adjust H.PHASE in menu 1 to obtain horizontal center at the center of CRT screen. b. Adjust the “OSD.HPOS” to get right display position.

SUB.TINT

ADJUSTMENT

Receive the color bar signal of NTSC system. Set the picture mode at normal mode. Adjust the ‘SUB.TINT’ option in menu5 at sevice mode to get the right hue .

MTS ADJUSTMENT Receive the RF CROSS-TALK signals , but FM with BTSC .Enter into the factory mode. Set ADJ.FREQ to 1 in “9852 AUTO.ADJ”. Wait 1 second . Quit factory menu after “ADJUSTING ” change to “0”.

-14-

Ver tical size and pincushion adjustment

Service Adjustments COLOR PURITY ADJUSTMENT a. b. c. d. e. f. g.

Before color purity adjustment, Warm up the TV set over 15 minutes and fully degauss. Receive pure white signal in AV status and set the TV receiver dynamic. Go to factory mode “MENU2”. After write down the values of R-BIAS and B-BIAS, set the values of R-BIAS and B-BIAS zero. Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color purity magnetic loop. Adjust color purity magnetic loop to make the green area at the center of CRT screen. Slowly push the deflection yoke toward the front of CRT and set it where a uniform green field is obtained. Tighten the clamp screw of the deflection yoke. Restore the values of R-BIAS, G-BIAS and B-BIAS.

CONVERGENCE ADJUSTMENT a. Receive a dotted pattern. Set the TV receiver dynamic. b. Loose the convergence magnet clamper and align red with blue dots at the center of the screen by rotating (R, B) static convergence magnets. c. Align Red/Blue with green dots at the center of the screen by rotating (RB-G) static convergence magnet. d. Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain the good overall convergence. Fix them after the good overall convergence got. e. Fix the convergence magnets by turning the clamper. f. If purity error is found, follow “PURITY ADJUSTMENT” instructions.

Purity Magnet RB-G

RB

Magnet Clamper

Static Magnet

-15-

Ver tical size and pincushion adjustment

Service Adjustments APPENDIX FACTORY MENU DISCRIPTION MENU1

VALUE

DISCRIPTION

1 2 3 4 5 6 7

V.SIZE V.POS V.LINE V.SC H.PHASE H.BLK.RL H.FREQ MENU2

101 32 16 0 8 4 22

Align vertical amplitude Align vertical DC bias Align vertical linearity Align vertical S-correction Align sync to flyback phase H-blanking Control(Width /Phase) Align ES Sample horizontal frequency

1 2 3 4

V.KILL R.B G.B B.B

0 138 182 148

Disable vertical output Align Red out DC level Align Green out DC level Align Blue out DC level

5

R.D

67

Align Red out AC level

6 7

G.D B.D MENU3 RG.GAM B.GAM R.B.ANG AT.FLESH GRAY.MODE CROSS.BW AFC.GAIN H.BLK.SW MENU4 FILT.SYS CORING OSD.CONT OSD.HPOS BLK.STR.D BRIABL.T MENU5 RF.AGC

8 45

Align Green out AC level Align Blue out AC level

1 3 1 0 0 0 0 0

Disable R/G gamma correction (0/ON; 1/OFF) Select and Disable B gamma correction(0~2/ON;3/OFF) Adjust the demodulation angle of R-Y and B-Y

1 2 3 4 5 6 7 8 1 2 3 4 5 6 1

Select Test mode (0/White; 1/Gray) Service Test mode (0/TV; 1/Black; 2/White; 3/Crosshatch) Select Horiz. 1st loop gain & H-sync gate on/off(0/auto;1/enforce) H BLK R&L selection(0/right side blanking can be adjusted;1/left)

1 1 1 30 0 0

Select Y/C filter mode(0,2/3.58 unsymm.; 1,3/3.58 sym.; 4~7/no filt) Enable Luminance coring( 0/Off; 1/ON)

31

Align RF AGC threshold

Align the horizontal position of OSD Disable black stretch Align brightness ABL threshold

-16-

Ver tical size and pincushion adjustment

Service Adjustments OPTION

1 2 3 4

2 AV.CH SRH.SPEED TDA9852 TUN.AS.V 9852 AUTO.ADJ 1 ADJ.FREQ 2 ADJUSTING 3 FM.LVL 4 76075.VOL 5 L3-L0 6 TC2-TC0 7 A14-A10 8 A24-A20 TDA1 1 VOL.RIGHT 2 VOL.LEFT 3 GMU

3 0 1 1

Select AV numbers(0/ No AV;1/1 AV; 2,3/2AV) Select auto search speed(0/fastest, 7/lowest) Disable 9852(0/disable; 1/able) Select the Tuner address(0/Tuner pin3 to ground;1/pin3 not used)

0 0 16 0 0 0 0 0

Disable auto adjusting(0/disable; 1/get into autoadjust mode)

125 125 0

volume control right volume control left mute control for all outputs (general mute ) auto volume control (with 0.1Vrms-1.1Vrms input to get constant output 0.2Vrms) switch loudness on/off

4

AVLON

0

5 6 7 8

LOFF CCD SC2-SC0 SAP.ID TDA2 STERO.ID TZCM LMU EF2-EF0 L3-L0 A14-A10 A24-A20 STS

0 0 2 0

1 2 3 4 5 6 7 8

1 0 0 0 0 0 0 0

input level adjust timing current alignment data stereo alignment data for wideband expander stereo alignment data for spectral expander

selection between line in and line out

zero cross mode in volume operation mute control for line out selection between mono, stereo linear, spatial stereo and pseudo mode input level adjust stereo alignment data for wideband expander stereo alignment data for spectral expander stereo level switch

-17-

Ver tical size and pincushion adjustment

Service Adjustments

1 2 3 4 5 6 7 8

TDA3 ADJ AT1-AT2 TC2-TC0 WR.ERR RD ERR MANU ADJ STEREO SAP

0 0 0 0 0 0 0 0

stereo adjust on/off attack time at AVL timing current alignment data

mode selection for line out mode selection for line out

White Balance address

White Balance address Data Name

E2PROM Address

bright contrast color Sub-bright R.B G.B B.B R.D G.D B.D

12H 11H 10H 24H 1EH 1FH 20H 21H 22H 23H

-18-

LA76814 ADDRESS #1011 1010B #0001 0100B #0001 0101B #1011 1010B #0001 0011B #0000 1101B #0000 1110B #0000 1111B #0001 0000B #0001 0000B #0001 0010B

Purity and Convergence Adjustment COLOR PURITY ADJUSTMENT (1) Before color purity adjustment,warm up the TV set over 15 minutes and fully degauss. (2) Receive pure white signal in AV status and set the TV receiver dynamic. (3) Go to factory mod MENU2. After write down the values of R-BIAS and B-BIAS, set the values of RBIAS and B-BIAS zero. (4) Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color purity Magnetic loop. (5) Adjust color purity magnetic loop to make the green area at the center of CRT screen. (6) Slowly push the deflection yoke toward the front of CRT and set it where a uniform green field is Obtained. Tighten the clamp screw of the deflection yoke. (7) Restore the values of R-BIAS,G-BIAS AND B-BIAS.

CONVERGENCE ADJUSTMENT (1) Receive a dotted pattern. Set the TV receiver dynamic. (2) Loose the convergence magnet clamperrrrr and align red with blu dots at the center of the screen by rotating(R,B) static convergence magnets. (3) Align Red/Blue with green dots at the center of the screen by rotating(RB-G) static convergence magnet. (4) Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain the good

Purity Magnet RB-G Magnet Clamper

Static Magnet

-19-

RB

Control Location 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

Remote Sensor Power Indicator Main Switch Speakers Program Down & Up Button Volume Down & Up Button Menu Button AV/TV Button Front AV In (Option) Audio/Video - In/Out Jack AC Power Cord Terminal Antenna (75 Ohm)

4

(STEREO)

9

5

6

7

8

2

1

(MONO)

11

-20-

10

12

3

4

Input and Output Terminals VIDEO AND AUDIO INPUT/OUTPUT TERMINALS 1. Video / Audio input for playback for VCR. 2. Video / Audio output for TV monitor output. *Please keep AC cord unplugged when connecting TV system. (STEREO) AV-OUT

AV-IN

L

VIDEO

L

AUDIO

VIDEO

AUDIO R

R

(MONO) OUT VIDEO

IN AUDIO

VIDEO

AUDIO

NOTE: This is a mono CTV even though there are R & L audio input & output jack. These audio R/L input terminals are parallel connected inside and make mixed monaural sound output .There are same monaural audio output come from R/L output terminals.

-21-

Operation Instructions Turn the TV set on, then power indicator will light up. After a few seconds , the currently program number is displayed on the top right -hand corner of the screen.

MENU BUTTON 1.Press this button to select menu. VIDEO, TIME, and SETUP menu can be selected cyclically.

Video Menu

Audio Menu

Time Menu

Setup Menu

Exit Menu

(Option)

2.After enters each menu, you can select the desired adjusting item by the PROG.+/- buttons, and adjust the item by the VOL. +/- buttons. *When you select a item, symbols¡° / ¡±will display both sides of the item.

Video menu Video

Custom Contrast

Audio

Bright

Time

16 16 Sharpness 16 16 Color -15 Tint

1.Enter the video menu , you can select the picture quality instantly among four preset modes and one user-set mode. (User-set mode) Custom Standard Sports Movies Mild

Setup

*You can adjust CONTRAST ,BRIGHT , SHARPNESS , COLOR and TINT items by pressing the VOL. +/- buttons . The adjusted level is stored in Custom mode.

Audio menu(option) Video Audio Time

Mono ST SAP On Balance 00

1.ST: Press the VOL.+/-buttons can select the stereo mode , the order shown below: Mono Spatial Linear Psuedo

Setup

2.SAP: You can adjust the SAP ON to SAP OFF by the VOL+/-buttons ,. You can use the Second Audio Program when you select the SAP ON . 3.BALANCE: Press the VOL+/-buttons can adjust the left or right volume balance . * The MTS/SAP function is only an option for some models.

Time menu Video Audio Time Setup

Clock Timer TV On TV Off

--:-Off --:---:--

1.CLOCK: Press the VOL.- button to set hour, and the VOL.+ button set minute . 2.TIMER£º When you select the "Timer ON" mode, you can set the time of TV ON or TV OFF. *TV On: The TV will automatically turn on at the preset time. TV Off: The TV will automatically turn off at the preset time.

-22-

Operation Instructions Setup menu 1.After enters the setup menu, you press the PROG+/-buttons to select PRESET MENU, CCD MENU and V-CHIP MENU.

Video Audio Time Setup

2.Select the Language item by the PROG+/-buttons, and press the VOL.+/buttons to select the desired language . The screen menu is automatically displayed in that language. The order shown below: English Espanol Portugues

Preset Captain V-Chip Language

PRESET MENU , CCD MENU AND V-CHIP MENU PRESET MENU Preset System Channel Skip Auto Search Fine Tune

Antenna 03 Off

1.SYSTEM you can switch two signals :CABLE and ANTENNA . 2. CHANNEL Select the cable signal ,there are 01~125 channels Select the antenna signal , there are 02~69 channels . 3.SKIP Select "Skip ON" by VOL.+/- Buttons to skip unnecessary program number. 4.AUTO SEARCH Press VOL.+/-buttons to start auto searching. 5.FINE TUNE In areas of inferior broadcast conditions where adjustment is necessary for

CCD MENU ClosedCaption Caption Mode Channel Field

Off Capt. 1 1

1.CAPTION Set the caption OFF or ON . 2.MODE Select the caption mode or teletext mode . 3.CHANNEL Select channel 1 or channel 2 . 4.FIELD Select field 1 or field 2 .

V-CHIP MENU V-Chip Input Pwd

V-Chip V-Chip MPAA TVPG Content-V Content-S Content-L Content-D

Input the password¡° 9999 ¡± to call up V-Chip, MPAA and TVPG item.

On PG TV-14 B B B B

1.V-CHIP Set the V-Chip OFF or ON . 2.MPAA movie rating Select the type of program 3.TVPG(TV Parental Guidelines) Parents can guide their children watching some programmes by the item.

-23-

Mechanical Disassemblies CABINET BACK REMOVAL

CHASSIS REMOVAL

1. Refer to Figure 1,remove 9 screws. 2. Pull off cabinet back and remove.

1. Remove cabinet back. 2. Discharge the picture tube anode(2nd anode lead) to the dag coating (picture tube grounding lead). 3. Disconnect Degaussing coil socket(KE),Picture tube socket, Deflection yoke connector (KDY), Speaker connectors(KL and KR), and 2nd anode lead. 4. Remove chassis completely by sliding it straight back.

PICTURE TUBE REMOVAL CAUTION: Do not disturb the deflection yoke or magnet assembly on the picture tube Neck. Care must be taken to keep these assemblies intact, unless picture tube is being replaced. Discharge the picture tube to the coating before handing the Tube. 1. Remove chassis, referring to Chassis Removal instructions. 2. Place cabinet front face down on the soft surface. 3. Remove the screw on each corner of the picture tube and GENTLY lift the picture tube out of the cabinet. 4. Install a replacement picture tube in reverse order. Properly install the degaussing coil and picture tube grounding lead on the picture tube. See Figure 2.

Note: If the Picture Tube is being replaced, mount the Degaussing Coil on the picture tube. See following..

DEGAUSSING COIL

DEGAUSSING COIL HOLDER

PICTURE TUBE GROUNDING LEAD

To CRT Unit ground

DEGAUSSING COIL SOCKET

-24-

Cabinet Parts List

1

6

2

7

4

3

5

1

10

8

9

11

12

Key No. 1 2 3 4 5 6 7 8 9 10 11 12

Part No. SK140121NZM001(2) SK100121NZM002 SK100721NZM002 SK100721NZM002 Sk190100821210 SK100425TM0002 SK100821NZM001 SK060121NZM001 SK100221NX0001 SK1015HS080002 SK1016HS080003 SK1014HS080012

Description SPEAKER GRILLE(L&R)-SILVER BLUE #Sb001 (PVC) FRONT CABINET-METAL SILVER GREY #MSG001 W/AV (O-R-L-V) FRONT LENS (REMOTE CONTROL WINDOW) FRONT LENS (LED WINDOW) POWER KNOB SPRING - DIA.0.6SPRING WIRE SIDE AV JACK BRACKET-DARK GREY #DG001(ABS) CONTROL KEY KNOB-ELECTROPLATING SILVER(ABS) BACK LABEL " SKYWORTH " OVERSEAS ENG BACK CABINET-DARK GREY #DG001 BOTTOM CABINET - NORMAL GREY #NG001(ABS) BATTERY DOOR-NORMAL GREY #NG001(ABS) TOP CABINET - NORMAL GREY #NG001(ABS)

,, ,,

-25-

,, ,,

11 12 13 14

R036

10K

16

Q007 2SC1815

Vsyn

G

Hsyn

R

Q008 2SC1815

1K

V-SYNC

R719

4.7K

4.7K

330

R029

330

C240 10U/25V

AL-OUT

15

17

CN201

R208 47

C222 0.01U

18

C207 47U/16V

9V(2)

R255 100

19

R254 100

20

R256 100

21 22

5V(1)

23

C219

9V(1) R2115V(2)

C212 470U/16V

R462

C217 0.1U

0.33U

120 C214 0.01U

24 25

R210

26

3K3

27

R434 10K

FLL FIL

FM FIL

TV OUT

AFT OUT

ABL

EXT.V IN

R IN

G V/C/B

G IN

V OUT

B IN FB IN VCC

APC1 FIL

G OUT

KILLER FIL

B OUT

RAMP ALC

H OUT

34

9V(2)

C615 680P/500V

220U/200V

C607

D601C

R602

D601D

R605 2M2

!

4 STR-G6653

CONTROL BLOCK

!

1

R625 C616 100U/160V

D607 BYW36 C641 680P/500V

L602 R610 680 R603 0.22/1W

3

! R622 2M7 !

R601 PTC 10

IC602

C614 1000P

D604 IN4148

D602 IN4148

4

11

5

12

L

AC110V

N

!

L601 DEG.COIL !

VCC

OUT

NF

6

VOL

SW

EXT

GND

GND

9

10

8

7

6

10

9

OUT

GND 8

NF

VOL

6

7

4

SW

EXT

INT

GND

3

1

6

21

C412

20

0.1U/C 18

4.7U/50V19

C413

VCC

D507 R504 1N4148 2K2

R524 270

R523 10K

C506 470u/16V D504

IC301

!

R301 47K

9V(2) R303 5.1K

R330 1.5K

C304 220U/50V

R319 15K

R237 560K

R327 2.2 2W

IC601

CN302 C327 0.1U

R318 100K

D608 BA158

C612 0.1U

R653 BA158 R642 1.2K

C611 0.1U/63V Q602 2SC1815

R629 10K

R329 10K

R324 3.9K

R309 1K 1W

ZD601 3V9

R626 0

9V(2)

L7805

5V(2)

R307 100

Q610 2SC1815 R646 3K9

C301 47U/50V

T301

C309 0.0022U/1KV

!

FOCUS

C314 .0076/2KV

SCREEN

10

R207 1K

6

! C310 0.056U/250V R644

CN301

3 2 1

3 8

R310 ! 22 1/2W

VR601

100K/2W

L301 44UH

7

Q302 2SD2499

2KB(H)

C311 0.47U 250V

R317 0.68 2W

D310 BA158

C313 .0047/2KV

R306 5.1K 5W

Q301 2SC2482

!

!

R620 150K 1/2W

C322 R308 2.7K 1/2W 560P/500V

R315 22K 1W

R331 1K5/1W

2

C320

B+

R630 10K

C312 1U/250V

1

D304 BA158 C318 680P/500V

R628 22

R632 10K 78L09 Q609

FBT

4

R316 3.9/2W

220U/16V

IC203

T603

C317 680P/500V

IC302 LA7809

C630 0.01U

D306 BA157

!

R311 180 1W

C326 2200U/25V

R320 1.2 2W

9V(1) C618 470U/25V

R645 1K

!

!

Q611 2SA966

C617 C621 2200U/25V 0.01U/50V

!

R326 270 2W

C323 1U/50V

5V(1)

L7805

R235 5K1

C324 0.47U

20V

C620 10U/50V

680P/500V

C613

CN602

C504 1000P/2KV

BA158

25V C642 0.01U

R621 0

C619

6

0.0022U/250V

CN601

D640 BA158

R619

C609 0.0033/100V

IC603

D605 4148

33V

15K 2W C640 1000U/25V

2.2 /2W

1K !

5 +9V(2)

R212 4.7K

LA7840

B+ 33V

IC004

10

47

C610 100UF/35V R611 2K2

R604 0.22/1W

7

680P/500V

BA158

R643

!

!

CN201B FROM CN201

! 3

R609 D611

9

C605

C623 4.7UF/160V

D609 IN4148

2 5 OCP/FB

D610 BA158

R612 10K

Q601 2SC2482

ZD602 15V

C602 .22/250V

R613 47/0.5W

C608 0.001U/2KV

R608 2M2

D601B

T601

L601

SCK473 R607 39K/3W

C321 100U/160V

R4F1

! C601D .0047

C501 150P

R501 150

150

Q508 2SC1815

R241 10K

C316 0.033U/M

R618

!

D506 R507 1N4148 2K2

C507 C505 10u/25V 0.01U

28

C215 1U/50V 0.022U

2SC2482

R515 390

4 GND

29

C216

R340 5.1K

0.68/2W

T601

R502

2 GO

5V(2)

R213 1K5

30

R509 2K7 1/2W

1 BO

D221 IN4148

3 RO

R214 1K

31

FBP IN

R512 15K/2W

Q501

C502 150P

C325 100/16V

R435 100

!

R221 10K R222 22K

C228 1000P

33

VCO IREF

2K7 1/2W

2SC2482

C238 C227 5n6 0.01U

32

NC

H AFC FIL

C235 15P

R510 Q502

R505 390

D505 R508 1N4148 2K2

R503 150

AV V OUT

36

NC

H VCC

R513 15K/2W

C233 10U/16V 3.579545M X201

35

OSD CON

2SC2482

C503 150P

AV V IN

37

2K7 1/2W

Q503

R506 390

C232 1U/50V

38

H GND

V OUT

5V(2)

C231 0.1U

40

XRAY

SYNC

EHT R511

15K/2W

R229 1K

C230 1U/50V

39

FSC OUT

R OUT

R530 150K/1W R514

R225 1K

41

XRAL

1 +180V

C247 0.47U/50V

42

ACC FIL

C315 1U/50V

IC401 HEF4052

1

1N5397 X4

10U/16V 17

1U/50V 14 C410

43

2 GND

FROM CN301

C224 0.001U

45.75M

45 44

VCC V/C/D

CN301B

R233 390

3 HEATER

C209 0.47U

46

INT.V IN

BUS CLOCK

L241 15UH

48 47

BLACK S.F

BUS DATA

0.01U

CRT PCB

75

D601A

C452 1000UF/25V

ABL

10K

9V(2)

C601A .0047

C414

1U/50V 13 C409

AL IN

AL-OUT

VCO

IF VCC

C246

1K

1

R433 10K

8R 3W

C451 1U/50V

R413 4.7K

10K

Q461 2SC1815

SPEAKER

3

C433 47U/16V R432 10K

C448 100U/25V

C438 10UF/50V

C447 220/25V

R442 100

V501 CRT

R243

2

R431 10K

C453 10U/50V

L203

49

D301 BA158 C434 47U/16V

R403 15 8.2K 16

10U/16V 12 C408

9

10

10U/16V 11 C407

8

100U/16V 6

47U/16V 7 C405

C406

4.7U/50V 5 C403

IF GND

C241 39PF

51 50

7

CONA GND

C239 0.22U

16

10K

Q462 2SC1815

13 14

9

CONB VEE

10

R464

OSD-R OSD-G OSD-B BLK

VCO

8

7

13

10K

11

12 AI0

10K

R439

AI3

ACOM

BI1

R436

INHBIT

BI3 4

5

14 AI1 3

BCOM

15

16 VDD

BI2

BI0

2

1

AL IN 1

10K

R438 10K

AI2

9V(2)

AR IN 1

F601 T3.15A/AC250

FRONT AV (OPTION)

R030

1N4148

11 12

100P

POWER

R437

C432 47U/16V

C431 47U/16V

V IN 1

1N4148

D007

C237

APC FIL

IF IN

1

10K

AR OUT AL OUT

D008

22

C236 100P

R209 470

R240

R465

R440 100

2SC1815 R445 10K

23

2.2U/50V 20K 10

R200 470

BLK OSD-B OSD-G OSD-R

330

9V(2)

9V(2)

C436 10U/50V

V OUT

R031

R463

6

R446 10K

1N4148

C221 R201 9

100K

V-IN AV1/2 SW

Q401

1N4148

D009

R007

100K

AV/TV SW

AR OUT

AR-IN

AR-OUT

VOUT

9V(2)

9V(2) Q402 2SC1815

AL-OUT

1K

C435 10U/50V

D010

8

EXT.A IN

IF IN

2

J147

R226 2.2K

AFT

25 24

D201 1N4148

Q221

2SC1815

B

7

RF AGC

3

R065 4.7K

BLK

OPTselect

5V(1)

5 6

R008 100K

5V(2)

4

4

AV V OUT IC201 PIN40

21

R052 100

45B

1

5V(2)

20

R043 10K

5V(1)

FIL

19

27

IC002 24C04

26

RESET

18

R051 100

C016 0.1U

52

2

ZD003 3.6V

C014 4.7U/50V

DATA

28

C206 0.01U

SIF OUT

3

8.2K

C012 2.2U/50V

100 C013 0.022U

R038 1M

29

CLK

OPT

SAW101 C205 100U/16V

PIF AGC

C328 100U/16V

R039

C011 0.01U

R034 4.7K

R033

IICDATA

PGCin

17

R032 1.5K

AFT

4148

C440 100P

C242 0.001U

53

4

5V(1)

15

32 31 30

3

SIF FIL

5

5V(1)

10K

IICCLK

LA4285

D401

AUDIO R

C245 39PF

54

SIF IN

FM OUT

5

Q006 2SA1015

R037

SAFTY

KEY

C203 0.022U

33

A OUT

6

RD21 16K CN001 PIN3

BALANCE

VDD

2

6

SW

AFT

XTF2

R404 150

SDA

IC403

R466 4.7K

R467 1.8K

W1 W2 W3

X001

32.768K

C008 15P

SD

1

7

RD9 2K

XTF1

34

V-IN

3K

2

1

RD8

4.3K

5V(1)

REMOTE

AV VOUT

RD7

4.7K

10

GND

AV/TV SW

35

IC201 PIN42

RD6

6.8K

9

M_TRAP

37 36

S_VHS

TUNE

R709

RD5

11K

C007 15P

AV1

POWER

8R 3W

20V

IC201 LA76814

C243 0.047U/M

1K

RD4

22K

COB.F

7

C004 220P 8 C005 100P

AV1/2 SW

5K1 R712

RD3

56K

R067 24K C009 330U/16V

C001 0.01U

RD2

R021 33K

AV/TV

SW004 SW003 SW002

C010 0.01U

SLEEP SEARCH

MENU

SW001

VOL+

RD21 15K

VOL-

SW007 SW006 SW005

FM

38

5K1 R710

6

PROG+

SW008

40

4.7K

VOL

SPEAKER

39

IC001 MUTE LA8633XX AV2

R047

IDscart

5

PROG-

41

V_H UHF

4

R046

IDsecam

3

R022 22K

0.022U

R405 100

5

Q464 2SC1815

2

SDA

GND

Cdec

Cm

CNR

VEI

VEO

CS

CW

CTS

CTW

LOL

SOL

AVL

LIL

Vref

CAV

EOL

VIL

LDL

OUTL

R468 15K

VOL

C411 0.047UF

20K

R401 2.2K

5K1 R711

2

5V(1) VOL POWER

42

V_L

R048

WRITE

4.7K

R013 4.7K 1

PMA64xxM

C450

R402

R049

RR1 1

5V(1)

Q003 2SA1015

LED

R050 9K1

RD11 1K

AL-IN

1

C401 0.1U/M

R001 10K

C404 C402 3 0.0082UF 2.2U/50V 4

4K7

CR1 0.022U

2

H-SYNC

3

V-SYNC

5V(1)

M001

4

INT

SCL

Vcc

Vcap

Cp1

C437 10UF/50V

CPU PIN5

AUDIO L

C444 220/25V

R441 1K C446 1U/50V

IC404

33V

R002

3

R412 4.7K

9V(2) TDA9852

5V(2)

C445 5 100U/25V

24

23

26

Cp2

Cph

Cadj

CER

Cmo

Css

LOR

SOR

AVR

LIR

Cps2

EOR

Cps1

VIR

COMP

C110 330U/16V

L101 100UH

2

SCL

1

C416 100U/16V

LA4285

22

10U/16V

0.47U/M

C441 100P

C417

C439

IC402 ZD401 8V2

0.01U

R406 100

27

28

29

C415 220U/16V C442

25

C419 2.2U/50V 4.7U/50V

0.015UF

4.7U/50V

C421

C420 30

31

33

34

32

0.022U

35

0.015UF

C422

2.2U/50V

C423

36

C425 39

42

C450

R408 12/1W

C418 0.22U/M

X401 503F58

AUDIO L LDR

100 R102

C427 0.015UF

AUDIO R

R110 47

OUTR

100 R101

R111 1K

C108 1U/50V

37

C109 0.01U

Q101 2SC2717 C111 0.01U

R410 20K

2.2U/50V C426 0.0082UF

R105 0

C104 4.7U/50V R107 33K

R409 2.2K

L102 0.82UH

C424

R109 270

38

9

C107 0.01U

11

10

8

7

6

5

4

3

2

1

R103 120K

C114 0.01U

40

R108 5.6K

TUNER

9V(2) R407 2.2K

9V(2)

41

IF1

IF2

33V

SDA

VCC VCC NC

NC

SCL

ADD

RFAGC

AR IN

AR-OUT

R114 220

R236 680

5V(2)

D305

R322 0.68 2W

C308 0.056U/M

C302

BA158

680P/500V

C303 10U/250V

TITLE: SYSTEM:

3Y03 DIAGRAM NTSC M

P/N: DATE:

2001-09-27