LG J10HD Service Manual Download

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2.1CH HOME THEATER SYSTEM

SERVICE MANUAL

CAUTION

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

SE
R

VICE MANUAL

Website http://biz.lgservice.com

Internal Use Only

P/NO : AFN32759823

SEPTEMBER, 2007

MODELS: J10HD-D/J10HD

SPEAKERS: J10HD-SF/J10HD-SA

MODELS: J10

-D

/J10
H

D (J10

D-SF/J10

D-SA)

Summary of Contents for J10HD

Page 1: ...EFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL Website http biz lgservice com Internal Use Only P NO AFN32759823 SEPTEMBER 2007 MODELS J10HD D J10HD SPEAKERS J10HD SF J10HD SA MODELS J10HD D J10HD J10HD SF J10HD SA ...

Page 2: ...TION 1 SUMMARY SECTION 2 ELECTRICAL SECTION 3 CABINET MAIN CHASSIS SECTION 4 REPLACEMENT PARTS LIST Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 3: ...TS 1 3 SERVICING PRECAUTIONS 1 4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE ES DEVICES SERVICE INFORMATION FOR EEPROM 1 5 SPECIFICATIONS 1 6 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 4: ...3 Soldering must be inspected to discover possible cold solder joints solder splash es or sharp solder points Be certain to remove all loose foreign particles 4 Check for physical evidence of damage or deterioration to parts and components for frayed leads or damaged insulation including theAC cord and replace if nec essary 5 No lead or component should touch a high current device or a resistor ra...

Page 5: ...hone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incide...

Page 6: ...NTER button on remote control 5 OSD Write OK 6 To INITIALIZE the system press CLEAR button on the remote control together with STOP button on the front panel about 6 sec 7 To exit from the option code menu without initialize the system just turn off the power and then turn on again OP1 00 00000000 MASK 30 OP2 00 00000000 E FF OR OP3 00 00000000 D39 OP4 00 00000000 OP5 00 00000000 OP6 00 00000000 O...

Page 7: ... 1 0V p p 75Ω negative sync RCA jack x 1 Pb Pr 0 7V p p 75Ω RCA jack x 2 HDMI video audio output 19pin HDMI standard Type A AMPLIFIER Output power Front 75W 75W 4Ω at 1kHz THD 10 Subwoofer 150W 3Ω at 60Hz THD 10 TUNER SPECIFICATIONS Tuning Range FM 87 5 108MHz Intermediate Frequency FM 10 7MHz Signal to noise ratio 60dB Mono Tuning Range AM 522 1 611kHz Intermediate Frequency AM 450kHz Antenna Wir...

Page 8: ... READY CIRCUIT DIAGRAM 2 33 6 µ COM MAIN CIRCUIT DIAGRAM 2 35 7 RF DRIVE OPU CIRCUIT DIAGRAM 2 37 8 MPEG CIRCUIT DIAGRAM 2 39 9 DSP MS3900 CIRCUIT DIAGRAM 2 41 10 HDMI CIRCUIT DIAGRAM 2 43 11 POWER INTERFACE CIRCUIT DIAGRAM 2 45 12 USB UBI9032 CIRCUIT DIAGRAM 2 47 13 T SLIDE CIRCUIT DIAGRAM 2 49 14 LOGO RCU CIRCUIT DIAGRAM 2 50 15 KEY CIRCUIT DIAGRAM 2 51 16 EJECT CIRCUIT DIAGRAM 2 52 17 HEADPHONE...

Page 9: ... D907 normal YES NO NO Is there about 2 5V at the IC942 pin1 Replace the IC942 NO Check or Replace the D907 Is the D944 normal Replace the D944 YES NO YES Is the D948 normal Replace the D948 YES NO Is the D946 normal Replace the D946 YES NO Is the D940 normal Replace the D940 YES NO Is the D942 normal Replace the D942 YES NO Power line of main PCB is short Copyright 2007 LG Electronics Inc All rig...

Page 10: ...D946 YES YES NO Is there about 3 3V 5V at the IC947 pin4 Check the PWR_CTRL H signal from µ com YES NO Check the IC947 and replace No 3 5V Is there about 4V at the IC955 pin1 Check or replace the D948 YES YES NO Is there about 3 3V 5V at the IC947 pin4 Check the PWR_CTRL H signal from µ COM YES NO Check the IC955 and replace Copyright 2007 LG Electronics Inc All right reserved Only for training an...

Page 11: ...the TH902 normal Replace the D941 YES NO Are the D941 normal Replace the IC949 YES NO Is there about 2 5V at the IC949 Is the Q904 Normal Check or Replace the Q904 YES YES NO Is Vcc 18V 25V supplied to C903 Power line of AMP PCB is short Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 12: ... SMPS 14VA line YES YES NO Is there about 12V at the IC260 pin2 Check the PWR_CTRL H signal from µ com YES NO Check the IC260 and replace No 5 1V Is there about 14V at the IC202 pin2 Check or replace the SMPS 14VA line YES YES NO Is there about 5V at the C208 Check the PWR_CTRL H signal from µ COM YES NO Check the IC202 and replace 2 DC DC TROUBLESHOOTING FLOW Copyright 2007 LG Electronics Inc All...

Page 13: ...3V Check the DC DC CN902 5V YES YES NO Check the IC110 105 data line Replace IC110 105 YES NO Check the IC101 pin1 9 73 80 µ com IC Is check IC101 pin19 20 50 5V Check IC101 pin1 PWR_SENSE 5V YES YES NO Is Check X101 Ocillation O K X101 replace YES NO IC101 replace NO Check the IC101 pin10 reset Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Interna...

Page 14: ...HDMI PAL YES YES NO Check FB915 5V Replace IC801 YES NO Check the IC507 pin109 110 AMP IC Check The IC701 702 output signal Check IC101 pin1 PWR_SENSE 5V YES YES NO Is check Vcc line Refer to the power part YES NO NO Check the DC power component Replace AMP IC NO Check the IC701 702 output signal Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Intern...

Page 15: ...g power cord connect again Power on NO Is the IC101 pin25 LOW signal 0V Replace IC101 YES NO Is the Q701 normal Replace the Q701 YES NO Replace TI AMP IC IC701 IC702 3 AMP PROTECTION Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 16: ...WAVEFORM IC507 RESET DVD PIN2 RESET u COM PIN10 2 AT USB FUNCTION DP DM WAVEFORM IC501 Playing at USB function USB_N PIN71 USB_P PIN73 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 17: ... DEVICE IC401 1 SLO 2 SLED1 PIN39 3 SLED2 PIN38 At Power on 4 AT DVD FUNCTION IC401 1 FDO PIN5 2 F PIN52 3 F PIN51 INSERT DVD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 18: ...DLE SIGNAL AT MD DECK IC401 1 Spin PIN26 2 Spin 3 Spin 6 TRACKING SIGNAL IC401 1 Tro PIN4 2 Tr PIN53 3 Tr PIN54 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 19: ...2 12 7 DISK TYPE JUGEMENT WAVEFORM IC401 1 F PIN51 2 FDO PIN5 3 SVREF PIN28 DVD CD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 20: ...LE5 P2902 P3301 P3201 2 13 2 14 WIRING DIAGRAMS 1 ACTIVE SUBWOOFER WIRING DIAGRAM J10HD 20070112 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 21: ...Data Connector 7 A30 Base Ass y 13 FFC Connector MD Data Connector 8 019 Cable FFC 23 FFC Connector MD Data Connector 9 CN109 5Pin Harness Connector Touch PAD Main PCB 10 CABLE4 20Pin Harness Connector Graphic FL Main PCB 11 CN304 5Pin Harness Connector Key PCB Logo PCB 12 CN106 8Pin Harness Connector Key PCB Main PCB 13 CN307 2Pin Harness Connector Open PCB Main PCB 14 CN308 3Pin Harness Connecto...

Page 22: ...2 17 2 18 1 ACTIVE SUBWOOFER BLOCK DIAGRAM BLOCK DIAGRAMS J10HD 20070112 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 26: ... SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED THIS WAY IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED 1 Shaded parts are critical for safety Replace only with specified part number 2 Voltages are DC measured with a digital voltmeter during ...

Page 38: ... 20061117 20061117 2 49 2 50 13 T SLIDE CIRCUIT DIAGRAM 14 LOGO RCU CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ... 20061117 20061117 2 51 2 52 15 KEY CIRCUIT DIAGRAM 16 EJECT CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 40: ... 20061117 20061117 2 53 2 54 17 HEADPHONE USB CIRCUIT DIAGRAM 18 RCU CIRCUIT DIAGRAM Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ... 0 13 0 0 14 0 0 15 0 0 16 3 73 3 73 17 3 71 3 71 18 3 2 3 2 19 0 0 20 0 0 21 2 35 2 35 22 0 0 23 5 18 5 18 24 0 0 25 0 0 26 0 0 27 0 26 0 26 28 4 94 4 94 IC110 1 DATA 0 2 DATA 0 3 DATA 0 4 DATA 0 5 DATA 0 6 DATA 0 7 DATA 0 8 DATA 0 9 DATA 0 10 DATA 0 11 DATA 0 12 DATA 0 13 DATA 0 14 DATA 0 15 DATA 0 16 DATA 0 17 DATA 0 18 DATA 0 19 DATA 0 20 DATA 0 IC401 1 0 2 0 3 8 4 1 7 5 1 71 6 0 7 0 8 0 9 0 1...

Page 45: ...2 63 2 64 2 MAIN SMPS P C BOARD 3 DC DC CONVERTER P C BOARD TOP VIEW BOTTOM VIEW Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...71 2 72 6 TOUCH SLIDE P C BOARD TOP VIEW BOTTOM VIEW 7 I O P C BOARD TOP VIEW BOTTOM VIEW Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ... VIEW 9 USB PHONE P C BOARD TOP VIEW BOTTOM VIEW 10 EJECT P C BOARD 11 LOGO P C BOARD TOP VIEW BOTTOM VIEW 12 KEY P C BOARD 2 73 2 74 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ... 13 LED 1 P C BOARD TOP VIEW BOTTOM VIEW 14 LED 2 P C BOARD TOP VIEW BOTTOM VIEW 15 RCU P C BOARD Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...D VIEWS 3 3 1 CABINET AND MAIN FRAME SECTION 3 3 2 DECK MECHANISM SECTION SDP 03 3 5 3 SPEAKER SECTION 3 7 4 PACKING ACCESSORY SECTION 3 11 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...51 468 468 468 463 463 463 463 463 463 463 463 463 463 463 463 260 104 101 410 CABLE1 CABLE3 CABLE4 455 276 470 261 261 261 261 262 320 330 411 451 470 454 268 CN109 CN106 CN304 CN309 CN308 P201 P202 468 468 CABLE2 CN307 I TOUCH PAD N A J F H E G D L M KEY RCU EJECT VFD J B N B H A I L G K E M C D F C K DC DC CONVERTER MAIN LOGO Copyright 2007 LG Electronics Inc All right reserved Only for trainin...

Page 55: ...9 004 005 006 017 002 003 019 024 024 025 024 025 025 025 A30 023 022 013 024 008 016 3 5 3 6 2 DECK MECHANISM SECTION SDP 03 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ... 953 955 962 963 300 966 965 412 411 465 466 463 463 463 470 466 964 267 P2902 P2402 P3302 P3201 CABLE5 When do P O Caution A45 AMP I O and LED Assembly compose Therefore 3EA s PCB Assembly is supplied if request purchase by A45 s P N Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...850 852 853 858 859 860 857 861 856 851 855 854 A80 A80A 3 9 3 10 3 2 FRONT SPEAKER J10HD SF Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...812 RCA CABLE 2WAY 816 SYSTEM CABLE 817 SPEAKER CABLE 801 OWNER S MANUAL 804 BAG 803 PACKING 825 ANTENNA T FM 808 BATTERY 900 REMOTE CONTROL 803 PACKING 802 BOX Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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