LG J10HD-D Service Manual
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LG J10HD-D Service Manual

2.1ch home theater system
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Internal Use Only
Website http://biz.lgservice.com
2.1CH HOME THEATER SYSTEM
SERVICE MANUAL
MODELS: J10HD-D/J10HD
SPEAKERS: J10HD-SF/J10HD-SA
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN32759823
SEPTEMBER, 2007

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Summary of Contents for LG J10HD-D

  • Page 1 Internal Use Only Website http://biz.lgservice.com 2.1CH HOME THEATER SYSTEM SERVICE MANUAL MODELS: J10HD-D/J10HD SPEAKERS: J10HD-SF/J10HD-SA CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN32759823 SEPTEMBER, 2007...
  • Page 2 CONTENTS SECTION 1..SUMMARY SECTION 2..ELECTRICAL SECTION 3..CABINET & MAIN CHASSIS SECTION 4..REPLACEMENT PARTS LIST Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Table Of Contents

    ........................1-4 • GENERAL SERVICING PRECAUTIONS • INSULATION CHECKING PRODEDURE • ELECTROSTATICALLY SENSITIVE (ES) DEVICES SERVICE INFORMATION FOR EEPROM ...................1-5 SPECIFICATIONS ............................1-6 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 4 When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.

  • Page 5: Servicing Precautions

    (Note 1) should be more than 1Mohm. tricity sufficient to damage an ES device.) Note 1 : Accessible Conductive Parts include Metal panels, Input terminals, Earphone jacks,etc. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 6: Service Information For Eeprom

    6 sec. 7. To exit from the option code menu without initialize the system, just turn off the power and then turn on again. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 7: Specifications

    Net Weight : 2.9kg Max. Input Power : 300W Net Dimensions (WxHxD) : 216x 328 x 317mm Net Weight : 8.3kg LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 8 16. EJECT CIRCUIT DIAGRAM .......2-52 17. HEADPHONE & USB CIRCUIT DIAGRAM ...2-53 18. RCU CIRCUIT DIAGRAM ......2-54 19. TOUCH PAD CIRCUIT DIAGRAM ....2-55 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Electrical Troubleshooting Guide

    Is the D940 normal? Replace the D940 Is the D942 normal? Replace the D942 Power line of main PCB is short LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 10 Check the PWR_CTRL ‘H’ Is there about 3.3V~ 5V signal from µ-COM at the IC947 pin4? Check the IC955 and replace Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Are the D941 normal? Is there about 2.5V Replace the IC949 at the IC949? Power line of AMP PCB is short LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 12: Dc/Dc Troubleshooting Flow

    IC202 pin2? Check the PWR_CTRL ‘H’ Is there about 5V at the signal from µ-COM C208? Check the IC202 and replace Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 Check IC101 pin1 PWR_SENSE +5V? pin19, 20, 50 +5V? Is Check X101 X101 replace Ocillation O.K? Check the IC101 pin10 reset. IC101 replace LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 14 Refer to the power part. Is check Vcc line? Check the IC701 / 702 output signal. Check the DC power component Replace AMP IC Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Amp Protection

    FLD Is the IC101 pin25 Replace IC101. "LOW" signal(0V)? Replace the Q701. Is the Q701 normal? Replace TI AMP IC(IC701, IC702). LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 16: Waveforms

    • 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. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Starting Action Waveform In Md Device

    (At Power on) 4. AT DVD FUNCTION IC401 1. FDO : PIN5 2. F+ : PIN52 3. F- : PIN51 (INSERT DVD) 2-10 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: At Power On, Spindle Signal At Md Deck

    2. Spin+ 3. Spin- 6. TRACKING SIGNAL IC401 1. Tro : PIN4 2. Tr- : PIN53 3. Tr+ : PIN54 2-11 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Disk Type Jugement Waveform

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

  • Page 20: Wiring Diagrams

    WIRING DIAGRAMS 1. ACTIVE SUBWOOFER WIRING DIAGRAM P2402 CABLE5 P2902 P3201 P3301 J10HD (20070112) 2-13 2-14 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Main System Wiring Diagram

    13 CN307 2Pin Harness Connector Open PCB Main PCB 14 CN308 3Pin Harness Connector RCU PCB Main PCB J10HD (20061117) 2-15 2-16 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 22: Block Diagrams

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

  • Page 23: Main System Block Diagram

    2. MAIN SYSTEM BLOCK DIAGRAM J10HD (20070112) 2-19 2-20 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 24: Dc/Dc Smps Block Diagram

    3. DC/DC SMPS BLOCK DIAGRAM J10HD (20061117) 2-21 2-22 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 25: Dc/Dc Converter Block Diagram

    4. DC/DC CONVERTER BLOCK DIAGRAM J10HD (20061117) 2-23 2-24 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 26: Circuit Diagrams

    THE SET IS NOT DELAYED UNTIL THE NEW SERVICE SPECIAL COMPONENTS ARE SHADED ON THE LITERATURE IS PRINTED. J10HD (20061117) 2-25 2-26 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: Smps (Dc/Dc Converter) Circuit Diagram

    2. SMPS (DC/DC CONVERTER) CIRCUIT DIAGRAM J10HD (20061117) 2-27 2-28 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 28: Amp & Pwm Circuit Diagram

    3. AMP & PWM CIRCUIT DIAGRAM J10HD (20061117) 2-29 2-30 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 29: I/O & Power Circuit Diagram

    4. I/O & POWER CIRCUIT DIAGRAM (20061117) 2-31 2-32 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 30: Xm Ready Circuit Diagram

    5. XM READY CIRCUIT DIAGRAM (20061117) 2-33 2-34 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: Μ-Com (Main) Circuit Diagram

    6. µ-COM (MAIN) CIRCUIT DIAGRAM (20070112) 2-35 2-36 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 32: Rf, Drive & Opu Circuit Diagram

    7. RF, DRIVE & OPU CIRCUIT DIAGRAM (20061117) 2-37 2-38 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 33: Mpeg Circuit Diagram

    8. MPEG CIRCUIT DIAGRAM (20070112) 2-39 2-40 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 34: Dsp (Ms3900) Circuit Diagram

    9. DSP (MS3900) CIRCUIT DIAGRAM (20061117) 2-41 2-42 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Hdmi Circuit Diagram

    10. HDMI CIRCUIT DIAGRAM (20061117) 2-43 2-44 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 36: Power Interface Circuit Diagram

    11. POWER INTERFACE CIRCUIT DIAGRAM (20061117) 2-45 2-46 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: Usb (Ubi9032) Circuit Diagram

    12. USB (UBI9032) CIRCUIT DIAGRAM (20070112) 2-47 2-48 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 38: T-Slide Circuit Diagram

    13. T-SLIDE CIRCUIT DIAGRAM 14. LOGO & RCU CIRCUIT DIAGRAM (20061117) (20061117) 2-49 2-50 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: Key Circuit Diagram

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

  • Page 40: Headphone & Usb Circuit Diagram

    17. HEADPHONE & USB CIRCUIT DIAGRAM 18. RCU CIRCUIT DIAGRAM (20061117) (20061117) 2-53 2-54 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 41: Touch Pad Circuit Diagram

    19. TOUCH PAD CIRCUIT DIAGRAM (20061117) 2-55 2-56 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 42: Circuit Voltage Chart

    0.98 0.98 2.08 2.08 1.71 IC403 2.08 2.08 2.33 2.33 IC109 4.94 4.94 0.27 0.27 5.17 5.17 3.43 3.43 2-57 2-58 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Printed Circuit Diagrams

    PRINTED CIRCUIT DIAGRAMS 1. DVD MAIN P.C.BOARD (TOP VIEW) 2-59 2-60 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 DVD MAIN P.C.BOARD (BOTTOM VIEW) EAX35449704 2-61 2-62 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 45: Main Smps P.c.board

    2. MAIN SMPS P.C.BOARD 3. DC/DC CONVERTER P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 2-63 2-64 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 46 4. MAIN AMP P.C.BOARD (TOP VIEW) 2-65 2-66 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 47: Main Amp P.c.board

    MAIN AMP P.C.BOARD (BOTTOM VIEW) 2-67 2-68 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 48: Touch Pad P.c.board

    5. TOUCH PAD P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 2-69 2-70 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 49: Touch Slide P.c.board

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

  • Page 50: Hdd To Main Atapi P.c.board

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

  • Page 51: Led 1 P.c.board

    13. LED 1 P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 14. LED 2 P.C.BOARD 15. RCU P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 2-75 2-76 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 52 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. LGE Internal Use Only Only for training and service purposes...
  • Page 53 MEMO LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 54: Exploded Views

    Therefore, 3EA's PCB Assembly is supplied if request purchase by A50's P/N. CABLE4 P202 CN106 CN309 CN304 CN308 CABLE1 CN307 CABLE2 CABLE3 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 55: Deck Mechanism Section (Sdp-03)

    2. DECK MECHANISM SECTION (SDP-03) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 56: Speaker Section

    Therefore, 3EA's PCB Assembly is supplied if request purchase by A45's P/N. 956A A90A P2402 P2902 A90B P3302 P3201 CABLE5 SMPS 951 952 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 3-2. FRONT SPEAKER (J10HD - SF) 3-10 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 58: Packing Accessory Section

    825 ANTENNA, T (FM) 808 BATTERY 817 SPEAKER CABLE 801 OWNER'S MANUAL 900 REMOTE CONTROL 804 BAG 803 PACKING 803 PACKING 802 BOX 3-11 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 MEMO 3-12 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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