Lg_lm-d2360.pdf

SERVICE MANUAL MODEL: LM-D2360(LMS-D2360V)

3CD CHANGER SYSTEM

SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.

MODEL: LM-D2360(LMS-D2360V)

[CONTENTS] ❍ SECTION 1. GENERAL • SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 • ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 • SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

❍ SECTION 2. ELECTRICAL SECTION • ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 • INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 • BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 • SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21 • WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35 • PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

❍ SECTION 3. DVD PART ELECTRICAL • DVD ELECTRICAL TROUBLESHOOTIHG GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 • DVD SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15 • DVD PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23

❍ SECTION 4. EXPLODED VIEWS • CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 • TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK) . . . . . . . . . . . . . . . . . . . . . . . . . .4-3 • TAPE DECK MECHANISM (A/R & A/S : LEFT A/S DECK) . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5 • CD MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

❍ SECTION 5. SPEAKER PART • SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

❍ SECTION 6. REPLACEMENT PARTS LIST • REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

- 1-1 -

SECTION 1. GENERAL ❏ SERVICING PRECAUTIONS ■ NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact.

Storage in conductive bag

Drop impact

2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

NEVER look directly at the laser beam, and don’t let contact fingers or other exposed skin.

5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this.

Pressure

Magnet

Pressure

How to hold the pick-up Cotton swab

Conductive Sheet 6) Never attempt to disassemble the pick-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

- 1-2 -

■ NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust.

2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1M Ω) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband

Resistor (1 Mohm) Resistor (1 Mohm)

Conductive Sheet

CLEARING MALFUNCTION You can reset your unit to initial status if malfunction occur(button malfunction, display, etc.). Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of the volume knob for more than 3 seconds. If you reset your unit, you must reenter all its settings(stations, clock, timer) NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it. 2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord. VOLUME UP

RESET jump wire

VOLUME KNOB

DOWN

- 1-3 -

❏ ESD PRECAUTIONS ■ Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

- 1-4 -

❏ SPECIFICATIONS General Power supply Power consumption

Net Weight External dimensions (W x H x D)

Refer to the main label. 70 W (LM-K3960Q/LM-D2960/LM-KW3960Q/LM-K3860Q model) 50 W (LM-K3565Q/LM-D2560 model) 30 W (LM-K3365Q/LM-D2360 model) 6.5 kg 272 X 322 X 354 mm

Tuner/Amplifier FM

Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response AM Tuning Range Intermediate Frequency Signal to Noise Ratio Frequency Response Output Power

T.H.D Frequency Response Signal-to-noise ratio

87.5 - 108.0 MHz or 65 -74 MHz, 87.5 -108.0 MHz 10.7 MHz 60/55 dB (Mono/Stereo) 140 - 10000 Hz 522 - 1620 kHz or 520 - 1720 kHz 450 kHz 30 dB 140 - 1800 Hz LM-K3960Q/LM-D2960/LM-KW3960Q model - 130W+130W (4 Ω , THD10%) LM-K3860Q model - 100 W + 100 W (4 Ω , THD 10 %) LM-K3565Q/LM-D2560 model - 50 W + 50 W (4 Ω , THD 10 %) LM-K3365Q/LM-D2360 model - 30 W + 30 W (4 Ω , THD 10 %) 0.5 % 140 - 20000 Hz 75 dB

DVD/VCD/CD player Frequency response (audio) Signal-to-noise ratio (audio) Signal-to-noise ratio (video) Dynamic range (audio) Video output S-video output Component Video output

Cassette tape player 40 - 20000 Hz More than 75 dB (1 kHz) More than 55 dB (1 kHz) More than 80 dB 1.0 V (p-p), 75 Ω (Y) 1.0 V (p-p), 75 Ω (C) 0.3 V (p-p), 75 Ω (Y) 1.0 V (p-p), 75 Ω (Pb)/(Pr) 0.7 V (p-p), 75Ω

Tape Speed Wow Flutter F.F/REW. Time Frequency Response Signal to Noise Ratio Channel Separation Erase Ratio

3000 ± 3 % (MTT-111. NORMAL-SPEED) 0.25 % (TT -111, JIS-WTD) 120 sec (C-60) 250 - 8000 Hz 43 dB 50 dB (P/B)/45 dB (R/P) 55 dB (MTT-5511)

Speakers Speaker Name Type Impedance Frequency Response Sound Pressure Level Rated Input Power

Max. Input Power

Net Dimensions (W x H x D) Net Weight

Front Speaker (L/R) Bass Reflex 2Way 3Speaker (LMS-K3960V/LMS-D2960/LMS-KW3960V/LMS-K3860V) Bass Reflex 2Way 2Speaker (LMS-K3565V/LMS-D2560/LMS-K3365V/LMS-D2360) 4Ω 55 - 20000 Hz 86 dB/W (1m) 130 W (LMS-K3960V/LMS-D2960/LMS-KW3960V) 100 W (LMS-K3860V) 50 W (LMS-K3565V/LMS-D2560) 30 W (LMS-K3365V/LMS-D2360) 260 W (LMS-K3960V/LMS-D2960/LMS-KW3960V) 200 W (LMS-K3860V) 100 W (LMS-K3565V/LMS-D2560) 60 W (LMS-K3365V/LMS-D2360) 214 X 386 X 318 mm (LMS-K3960V/LMS-D2960/LMS-KW3960V/LMS-K3860V) 229 X 224 X 286 mm (LMS-K3565V/LMS-D2560/LMS-K3365V/LMS-D2360) 6.3 kg (LMS-K3960V/LMS-D2960/LMS-KW3960V/LMS-K3860V) 4.2 kg (LMS-K3565V/LMS-D2560) 3.8 kg (LMS-K3365V/LMS-D2360)

- 1-5 -

- 1-6 -

SECTION 2. ELECTRICAL SECTION ❏ ELECTRICAL TROUBLESHOOTING GUIDE ■ MICOM PART CHECK I

P7904 6PIN P-SENS check

NO

Refer to SMPS Troubleshooting

YES IC101 KIA7042?

NO YES

Check if IC101 KIA7042 input is over 5V

YES

IC100 78KO/KF2 1 PIN Power Check

Check if IC101 KIA7042 input is over 4.3V

YES

YES normal

NO

normal

- 2-1 -

IC101 KIA7042 relevant parts check

NO

relevant parts replacement

■ MICOM PART CHECK II P7904 5PIN 5.6V check

NO

Refer to SMPS Troubleshooting

YES D101 1SR35 both terminal power check

NO YES

Output 5V operation check D101 1SR35

YES NO

relevant parts check

relevant parts replacement

YES Q101 EMITTER 5V check and COLLECTO

YES

normal

Q102 BASE PIN 0.6V HIGH check

NO YES IC 103 8PIN IC 100 19,20,59 PIN 5V check

YES X101:32.768KHz X100:9.8304MHz operation status check

YES

normal

Q102 COLLECTOR 0.6V LOW check

Check if IC101 KIA7042 output power is over 4.3V

YES NO relevant parts check

YES YES relevant parts check

YES

normal relevant parts replacement relevant parts replacement

normal

- 2-2 -

■ IC103 KS4CD21CS CHECK IC100 78KOKF2 22,24 PIN Check

YES 22 PIN DATA

NO

MICOM power 5V check

NO

Refer to MICOM Troubleshooting

NO

relevant parts replacement

YES relevant parts check

YES

YES

normal

normal

■ FLD DISPLAY CHECK P7904 1,2,3 power check

YES

NO

Refer to SMPS Troubleshooting

F1+, F2 both terminal: 3.7V and above VKK: power is over 26V

YES

P7302 connection status check and power check F+,F2- both termainal: 3.7V or above VKK:26V or above power check

YES

NO

P7302 assembly check

YES Each PIN power check

YES IC301 PT6324 Power check 50 PIN VKK:-26V 9.52 PIN +5V

normal

YES

- 2-3 -

NO

relevant parts replacement

YES

NO

If 5V defective D3191SR35 input and output power check

YES IC100 ➞ IC301 DATA Communication check PIN PIN 75 PIN ➞ 3PIN STB 76 PIN ➞ 2PIN DO 77 PIN ➞ 4PIN DI 78 PIN ➞ 1PIN CLK

YES

relevant parts check

NO YES

relevant parts replacement

normal

NO

IC100 75 PIN ➞ STB 77 PIN ➞ 4PIN DI 78 PIN ➞ 1PIN CLK Data output check

YES 76 PIN ➞ DATA input check

YES FLT light on relevant parts check

YES

normal

NO YES normal

- 2-4 -

relevant parts replacement

■ PWM ALTERATION PART CHECK P7905 9PIN 3.3V check

NO

Refer to SMPS Troubleshooting

YES IC604 PS9829 VDD PIN Power check (3.10.22.29.39.47.56.65.72. 87. 94)

YES X601 12.288MHz operation check

NO YES

relevant parts check X604 12.288MHz

YES

IC604 PS9829 86 PIN CLK input check

NO

relevant parts replacement

normal

YES

NO

IC100 78KOKF2 21 ➞ PWM_CLK 22 ➞ PWM_DATA 23 ➞ PWM_REST output check

YES

NO

IC604 PS9829 DATA input check 78 PIN ➞ DATA 79 PIN ➞ CLK 96 PIN ➞ REST

relevant parts replacement

NO

relevant parts replacement

LINE resistance check DATA:R671 CLK:R670 RST:R665

YES normal

NO

DVD ASS`Y PS9829 communication status check(P7403)

YES PWM MODULATOR output check FL:75(+)74(-)FR:71(+)70(-) SW:68(+)67(-)CEN:62(+)61 (-) SL:59(+)58(-)SR:52(+)51(-)

YES

NO

normal

YES

YES

R668(470Ω) output check

NO

Refer to DVD Troubleshooting

IC604 PS9829 DATA input check

YES

NO

normal

NO IC604 PS9829 parts check

normal

- 2-5 -

Check each line resistance check

■ POWER AMP PART CHECK P7905 3 PIN+12 13.14.15 PIN 32V

YES

NO

Refer to SMPS Troubleshooting

Each IC700,701,702,703 34.29.26.21 PIN input power check

YES Each IC 700.701.702.703 1.36.17.18.19 PIN +12V input power check

YES

NO

Each LINE resistance output power check IC700:R702.701.726.727.724 IC701:R730.729.750.753.752 IC702:R756.755.768.771.770 IC703:R774.773.794.797.796

PWM MODULATOR input power check Each IC 4.6.14.16 PIN

YES POWER IC 700.701.702.703 34.29.27.20 PIN output check

YES Output LINE COIL check

NO

relevant parts replacement

YES normal

- 2-6 -

■ AUX FUNCTION Check whether JK800 contacts or not

YES IC200 (BU4052)4,11PI N input waveform check

NO YES IC200 (BU4052)3,13PIN output waveform check

IC200 (BU4052)16PINVDD, 8PIN VSS power check

YES

NO

u-COM (IC301)83PIN,84PIN Communication check

YES relevant parts replacement

IC801 (MC4580) 2,6PIN input waveform check

NO YES

IC801 (MC4580)4PIN VSS,8PIN VDD power check

YES normal

relevant parts replacement

- 2-7 -

NO

Refer to SMPS Troubleshooting

■ TUNER FUNCTION CHECK Tuner module (TU601) operation check

NO YES

TUNER MODUEL power check (2PIN 9Vcheck)

IC200(BU4052)1, 12PIN input waveform check

YES IC200 (BU4052)3,13PIN output waveform check IC601(BU4052)2,15PIN input waveform check

NO

IC200 (BU4052)16PINVDD,8PIN VSS power check

YES

YES IC801 (MC4580)2,6PIN input waveform check.

relevant parts replacement

NO YES

IC801(MC4580)4PIN VSS,8PIN VDD power check

YES relevant parts replacement

normal

■ TAPE FUNCTION CHECK TAPE PCB ASS`Y

YES IC200(BU4052)2,1 5PIN input waveform check

NO YES IC200 (BU4052)3,13PIN output check IC601(BU4052) 2,15PIN input waveform check

IC200 (BU4052)16PINVDD,8PIN VSS power check

YES relevant parts replacement

YES IC801 (MC4580)2,6PIN input check

YES normal

NO

IC200 (BU4052)16PINVDD,8PIN VSS power check

YES relevant parts replacement - 2-8 -

■ TAPE PLAY PART CHECK P2707:4 PIN ➞ 12V

NO

Refer to SMPS Troubleshooting

YES IC201 (HA12237)16 PIN 12V input waveform check

YES IC201:5.26 PIN Signal Output check

NO DECK HEAD input check

YES

YES

NO HEAD WIRE or Mecha replacement

DECK HEAD input IC201 32.39 PIN check

YES relevant parts check

IC20114 PIN MUTE operation check

NO

YES

relevant parts replacement

normal

NO YES

IC202 10 PIN HIGH operation check

YES relevant parts check

NO YES normal

normal

- 2-9 -

relevant parts replacement

■ TAPE REC PART CHECK IC604 PS9829 #49,#52 PWM NO output check

Refer to PWM modulation part

YES P7207 #2.#4 output check

NO

Q601 Collector waveform check

YES NO P2707 #5.#7 input check

Board to Board cantact check

YES IC203 MC4580 #1,#7 check

NO YES

IC203 8 PIN +12V check

YES

IC201 7.24 PIN REC input check

NO

Refer to SMPS Troubleshooting

relevant parts check

YES

YES

NO

relevant parts replacement

NO

IC202 4 PIN HIGH operation check

normal IC201 10.21 PIN output check

YES L203 2.3 PIN oscillation check

YES P2203 5.3 PIN input check 8 PIN ERASE input check

NO YES

Q205(D1304) BASE HIGH check

YES

YES

normal

relevant parts replacement

normal

- 2-10 -

■ SMPS POWER CIRCUIT *MAIN PART Check the fuse F901

NO

Replace the fuse

YES Check the DC V of C905. If DC V is over 400V

NO

Check BD901, LF901,902

YES Chcek the DC V Of C909, C903,C921 If DC V is in 14~19V and it is steady.

NO

Check IC901 ,902

YES

YES

Check short of P9701,P9702 line

Check the DC V Of C981,C945. If DC V is 6.1V

NO YES Chcek the DC VOf C950,C951 If DC V is in 35V,-35V

NO

Check short of P9702 line

Check short of P9701 line

YES OK

- 2-11 -

NO

Replace IC 901,902

*P-SENS PART Check the PIN6 OF P9702 If DC V is over 5.6V

NO

Check power circuit Trouble shooting

YES OK

*VKK PART Check the PIN3 OF P9702 If DC V is over -28V ±2

NO

Check power circuit Trouble shooting

YES OK

- 2-12 -

❏ INTERNAL BLOCK DIAGRAM of ICs • TAS5142 BLOCK DIAGRAM

- 2-13 -

• U1739EJ2V1UD00/KF2_E BLOCK DIAGRAM

- 2-14 -

• HA12237F BLOCK DIAGRAM

- 2-15 -

• STR-S6757IF1905 BLOCK DIAGRAM

• PS9829B BLOCK DIAGRAM

- 2-16 -

• ES6838 BLOCK DIAGRAM

GPIO

SRAM/ROM Interface

32-Bit RISC Processor

Audio ADC

16 K Cache

Serial Audio Interface Gateway Audio DAC

+ DMA Controller

USB

DVD Descrambler + Transport

Huffman Decoder

Servo Controller / RF Video Processor

ATAPI ROM RAM 8051 µController

DRAM Interface

Digital PLL

ECC DSC

RF AFE

- 2-17 -

Display OSD / SPU Controller Scaler DeIntelacer

TV-Encoder VDAC

HDMI I/F

• PT6324 BLOCK DIAGRAM

- 2-18 -

❏ BLOCK DIAGRAM

LC6324

DECK/AD

OVERALL AV BLOCK DIAGRAM 9.8304MHz MAIN BOARD AMP BOARD TAS5152_PDN

MODE A.B HALF A.B REC F.R

VFD DATA.CLK SOL"A" EXP CLK SOL"B" DATA DECK

MOTER HIGH/NO RM

12.288 NEC AUDIO MICOM

9829_DAT 9829_RESET 9829_CLK

LEVEL METER

PS9829A FL+/-, FR+/- TAS5142 PWM MODUL RL+/-, RR+/- Power Amp ATOR CENTER +/WOOFER+/-

CS5340 CLK.DATA

RDS DATA CLK

S/W C/T RL RR

H/P_SW PWM OUT

OP AMP REC L/R

HA12237 TAPE IC

TAS5152_SD FR

EXPENDER

REC MUTE REC MUTE REC RETM REC SW REC MUTE

FL

SUB WOOFER OP AMP

DVD DATA.CLK OP AMP

TUNER MODULE

DVD DATA CLK PLL DAT.CLK BU4052 DATA TUNER L/R

HEAD WOOFER

CS5340 RESET

OPTICAL

TAPE L/R AUX L/R

AUX L/R

BU4052

CS5340

OP AMP

12.28MHz DVD/CD BLOCK

MIC INPUT

USB DA+,-,5V

2-19

2-20

❏ SCHEMATIC DIAGRAMS • MAIN SCHEMATIC DIAGRAM

MIC

VIDIO OUT

OPT OUT

OPT IN

Y

AUDIO L, R

12S

MICOM

MIC L, R 12S

PWM/DAC

CYBS,C,pb,pr,R,B

SWITCH

ADC

Y

Y/G

A_MUTE

AUDIO JACK

SPDIF OUT

DECK MECHANISM

SPDIF IN

UART

A,B,C,D,E,F,R CDMDI, DVDMDI

MMA[0..1MB]B[0..15]

SDRAM

P/UP

CDDVDCT, VRDVD,VRD LDO1,LDO2

DSCK#,CKE,CSo#,RAS0 CAS#,WE#,DQMX

M

OPEN/CLOSE LA[0..21], LD[0..7]

FLASH

WRLL#,MRST#,LOE#

MPEG ESS6838

FOCUS/SLED

MOTOR DRIVE SLED±, F±,T± IC

SPINDLE/TACKING AMP_STBY

LOAD±,SPINDLE±

48MHz SCI

EEPROM

USB_RESET MCU_INTQ

SDA D-, D+

USB UBI9021

JRD#,HWR# MS_SEL_OU HA0

27MHz

USB CON HD[0..15], CONTROL SIGNAL

2-21

2-22

HD[0..7]

• MAIN SCHEMATIC DIAGRAM

2-23

2-24

• MAIN AMP SCHEMATIC DIAGRAM

2-25

2-26

• FRONT SCHEMATIC DIAGRAM

2-27

2-28

• SMPS SCHEMATIC DIAGRAM

2-29

2-30

• DECK SCHEMATIC DIAGRAM

2-31

2-32

• JACK & IO SCHEMATIC DIAGRAM

2-33

2-34

❏ WIRING DIAGRAM

P4004

P0401

P9702

DVD BLOCK

IO JACK BLOCK

SMPS BLOCK P9701

P4703

P5701

P7501 P7905 TO CD/DVD POWER

CD/DVD /AMP Power

FRONT 130Wx2 P7403

PS9829 P7904

FRONT BLOCK

P3702

Center/Surrd X3 60W Sub WooferX180W

P7302 P7709

DECK Ass`y

P7206

P2706

P7207

P2707

P2202 P2203

LM-K7960WIRING WIRINGDIAGRAM DIAGRAM LM-K7960

P2201

2-35

2-36

❏ PRINTED CIRCUIT DIAGRAMS • MAIN P.C. BOARD

2-37

2-38

• MAIN P.C. BOARD

2-39

2-40

• FRONT P.C. BOARD

2-41

2-42

• SMPS P.C. BOARD

• JACK I/O P.C. BOARD

2-43

2-44

• DECK P.C. BOARD

2-45

2-46

SECTION 3. DVD PART ELECTRICAL ❏ DVD ELECTRICAL TROUBLESHOOTIHG GUIDE ■ POWER CHECK GUIDE POWER ON

POWER ON

PUSH KARAOKE DVD BUTTON

DOES DVD/CD APPEAR AT FLD?

DOES AUX,FM 87.5 APPEAR AT FLD?

Y

Y

N

DOES DISK1 APPEAR AT FLD?

N

DOES IT APPEAR DVD ERROR AT FLD?

N

Y

Y DOES NO DISC OR TIME ARE APPEARED AT FLD?

N

CHECK CONNECTOR (P4703,P4004, P5701)

Y OK

CHECK THE VOLTAGE OF EACH PIN ON P5701.

N

Y CHECK DVD MD MODULE.

CHECK CONNECTOR P7501.

- 3-1 -

RECONNECT IT.

OK.

■ TEST &DEBUG FLOW POWER ON

Y N SHOW LOGO?

FLASH MEMORY OPERATES PROPERLY?

N

CHECK CONNECTION LINES BETWEEN FLASH &ES8381 OR THE FLASH ACCESS TIME WHETHER IS SUITABLE OR NOT.

N

CHECK CONNECTION LINES BETWEEN SDRAM (IC502)&ES8381 OR THE SDRAM IS DAMAGED.

N

CHECK THE RELATED CIRCUIT OF ES6698FD (IC501)PIN 133,134,137,138,139,140

Y

SDRAM WORKS PROPERLY?

Y Y

ES8381 VIDEO OUTPUTS PROPERLY?

Y CHECK AV CABLE CONNECTION TO TV SET.

DOES FIRST TRAY MOVE INSIDE WHEN IT IS AT CLOSED POSITION?

N

OUT_SW,IN_SW SIGNALS OK?

N

CHECK THE MD MECHA

Y OPEN /CLOSE SIGNALS ON IC401 ARE OK?

Y

N

CHECK THE OUTPUT SIGNAL OF ES8381 TO IC401 FOR CONTROL OPEN/CLOSE

Y LOAD+&LOADSIGNALS ON PDM02 ARE OK?

Y

B

CHECK THE CABLE CONNECTION BETWEEN DVD PCB AND MD (MECHA)

- 3-2 -

N

CHECK THE TRAY CONTROL I/O PIN ON IC401.

B

DOES THE SLED MOVE TO INNER SIDE WHEN IT IS AT OUTER POSITION?

N

LIMIT SW SIGNAL ON P4407 IS LOW?

N CHECK THE MD

Y N

CHECK THE RELATED CIRCUIT OF SLED AND MOTOR DRIVER IC (IC401)

N

CHECK FOCUS CONNECTION ON ES8381 AND MOTOR DRIVER IC.

SLED SIGNAL IS OK?

Y

Y

CHECK THE CABLE CONNECTION WITH MECHA.

DO NOT PUT IN DISC AND TRAY CLOSE.

Y

OPTICAL LENS IS MOVING FOR SEARCHING FOCUS?

N

PROPER FOCUS OUTPUTS TO MOTOR DRIVER?

Y

Y

PROPER F+&FOUTPUTS?

Y

C

CHECK CABLE CONNECTION WITH PICK-UP HEAD.

- 3-3 -

N

CHECK THE MOTOR DRIVER (IC401).

C N LASER TURNS ON WHEN READING DISC?

DVDLD OR CDLD OUTPUT PROPERLY?

N

CHECK THE LASER POWER CIRCUIT BETWEEN ES8381 AND POWER TRANSISTOR. (Q405,Q406)

Y COLLECTOR VOLTAGE OF POWER TRANSISTOR IS OK? (Q405,Q406)

Y

N

CHECK THE RELATED CIRCUIT OF LASER POWER TRANSISTOR.

Y CHECK CABLE CONNECTION BETWEEN PDM01 AND PICK-UP HEAD.

PUT DISC IN TRAY.

Y

N DOES SPINDLE ROTATE?

PROPER SPINDLE SIGNAL ON ES8381.

N

CHECK THE SPINDLE RELATED CIRCUIT ON ES8381

N

CHECK THE SPINDLE CONTROL OF MOTOR DRIVER (IC404).

Y SPIN+&SPINOUTPUT PROPERLY?

Y

Y

D

CHECK THE CABLE CONNECTION BETWEEN PDM03 AND MD

- 3-4 -

D

N FOCUS ON OK?

PROPER SIGNAL ON A,B,C,D FROM MD?

N

CHECK THE CONNECTIONS BETWEEN PDM01 AND PICK-UP HEAD.

Y

PROPER FOO SIGNAL ON IC401?

N

CHECK THE RELATED CIRCUIT OF ES8381 FOCUS SIGNAL.

N

CHECK THE RELATED CIRCUIT BETWEEN IC401 AND ES8381

N

CHECK THE TRACKING CONTROL ON MOTOR DRIVER (IC401).

Y Y CHECK CABLE CONNECTION BETWEEN PDM01 AND MD.

N TRACKING OK?

PROPER TRO SIGNAL ON IC401?

Y

T+&T-OUTPUT PROPERLY?

Y Y

CHECK CABLE CONNECTION ON PICK-UP HEAD.

N DISC PLAY?

CHECK RF SIGNAL WAVEFORM.

Y

E - 3-5 -

E ALL OUTPUTS ARE OK DURING PLAYING DISK ?

N

N AUDIO SIGNAL DATA ON P4703 IS OK?

CHECK THE CONNECTIONS BETWEEN ES8381 AND P4703

Y

CHECK THE MAIN PCB

Y

N

PICTURE SIGNAL DATA ON ES8381 IS OK?

TEST END

- 3-6 -

N

FOR EXAMPLE COMPOSITE VIDEO , CHECK THE VIDEO MUTE TR (Q411), OUTPUT OF VIDEO BUFFER IC (IC407)AND ES8381 VIDEO SIGNAL DATA

■ USB PART TURN ON USB

Y

“SEARCHING ”OR “USB ”DISPLAY CHECK

N

CHECK THE POWER SUPPLY CIRCUIT. (CHECK P5701)

Y CHECK THE HRST#SIGNAL

Y

Y CHECK THE USB PART AND DVD PART LINE.

N

CHECK THE USB JACK POWER SUPPLY. (CHECK P4302)

READING OK CHECK

Y CHECK THE USB DATA LINE.(P4302)

Y Y CHECK THE IC405 (UBI9021).(CHECK DATA LINE PIN 14~17,20~23)

OK

- 3-7 -

■ WAVEFORM WHEN POWER ON,RESET &DATA ETC WAVEFORM 1.RESET(DVD) 2.RX 3.TX 4.LCS3#(FLASH)

Playing at USB function 1.HRST# 2.5V 3.D4.D+

- 3-8 -

OPEN/CLOSE WAVEFORM AT POWER ON

1.Limit SW 2.OPEN 3.CLOSE

STARTING ACTION WAVEFORM IN MD DEVICE

1.SLO (from MPEG) 2.SLED3.SLED+ (At Power on )

- 3-9 -

FOCUS WAVEFORM (AT CD)

1.FDO 2.F+ 3.F(INSERT CD )

FOCUS WAVEFORM (AT DVD)

(INSERT DVD ) 1.FDO 2.F+ 3.F-

- 3-10 -

AT POWER ON ,SPINDLE SIGNAL AT MD DECK

1.Spind 2.Spin+ 3.Spin-

AT FIRST ACTION,FOCUS SIGNAL A,B,C,D 1.A 2.B 3.C 4.D

- 3-11 -

TRACKING SIGNAL

1.Tro 2.Tr3.Tr+

RF WAVEFORM

- 3-12 -

DISK TYPE JUGEMENT WAVEFORM

(DVD)

1.F+ 2.FDO 3.SVRRF

(CD)

- 3-13 -

- 3-14 -

❏ DVD SCHEMATIC DIAGRAMS • MPEG SCHEMATIC DIAGRAM

3-15

3-16

• RF & SERVO SCHEMATIC DIAGRAM

3-17

3-18

• INTERFACE SCHEMATIC DIAGRAM

3-19

3-20

• USB SCHEMATIC DIAGRAM

3-21

3-22

❏ PRINTED CIRCUIT DIAGRAMS • DVD P.C. BOARD

3-23

3-24

• DVD P.C. BOARD

3-25

3-26

SECTION 4. EXPLODED VIEWS ❏ CABINET AND MAIN FRAME SECTION NOTE) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

A26 260

261

451

451

A43

A41

A49

281

259

451

CABLE3

451

A51 CABLE4 A46

258 451 A44

451

265

256 A50

255

264 257

263

CABLE2

255 254

451

253

450 A00

252

A47

250 251

CABLE1

266

280

A48

CN201

289 267 305

290 454 291

A40

4-1

4-2

❏ TAPE DECK MECHANISM (A/R & A/S : LEFT A/S DECK)

006

021 037 020

019

001 007

018 017

008 002 003

A01

015 022 023 009

025 009 A02

011

013

4-3

4-4

❏ TAPE DECK MECHANISM (A/R & A/S : RIGHT A/R DECK)

021 019 020

018 007 017

008

016

015

003

022

009

023

025

009 A03 011

013

4-5

4-6

❏ DECK MECHANISM EXPLODED VIEWS 416

151

159

156

422 170 165 418 419 164

155 173

153 163

169

168 162

417 166 012A

417

432 030

167

439

416

025

024

A30

431 435

430

012A 177 172 175 021

036 035 035A 180

438

4-7

4-8

SECTION 5. SPEAKER SECTION ❏ MODEL: LMS-D2360V 860 RIGHT 850 LEFT A80

853 861 RIGHT 851 LEFT

862 RIGHT 859 LEFT

858

857 856

854

875

855

876

- 5-1 -

852

- 5-2 -