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LG 47LH40ED Service Manual
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LG 47LH40ED Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LJ92J
MODEL : 47LH40ED
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
47LH40ED-SA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 47LH40ED

  • Page 1: Service Manual

    Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LJ92J MODEL : 47LH40ED 47LH40ED-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............14 TROUBLE SHOOTING ................17 BLOCK DIAGRAM...................58 EXPLODED VIEW .................. 59 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Electrical Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 14. 1920*1080 33.71 29.97 74.176 HDTV 1080P 15. 1920*1080 56.25 50.000 148.5 HDTV 1080P 16. 1920*1080 28.125 25.000 74.25 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 - Min Horiz. Freq - 30 kHz - Max Horiz. Freq - 80 kHz - Pixel Clock - 170 MHz Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Quantity Swivel Degree Swivel(+/- 20degree) Stand Assy Swivel Force 1.5 Kgf(0.8Kgf ~ 2.5Kgf) General Appearance Refer to Standard of LG(56)G4-9002 Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    (Display Data Channel) download • Color Temperature (White Balance) Adjustment • Make sure RS-232C control • Selection Factory output option Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 4.3. << 10P WAFER >> PIN MAP Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - xb 00 60: Change to RGB-PC mode(No action) - ad 00 10: Adjust 1080p RGB - ad 00 90: End of the adjustment Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 • RGB 1080p adjustment in RGB input mode • If you success RGB 1080p Adjust. You can see “ADC RGB-DTV Success” Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 Main RGB cable Pic.3) For write EDID data, setting Jig and another instruments. • EDID data for LJ91D Chassis (Model name = LG TV) - HDMI-1 EDID table (0x33, 0x2C) - Analog (RGB) EDID table (0x9B, 0x25) See Working Guide if you want more information about EDID communication.
  • Page 15 * If it needs, offset adjustment (wb 00 20-start, wb 00 2f-end) • "wb 00 ff": End of white balance adjustment (inner pattern disappear) Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 GND. - ESD test: Test between Power cord GND and Live and neutral. • Leakage current: Set to 0.5mA(rms) Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: Block Diagram

    RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Check X201 Clock 54MHz Replace X201 Check signal transition Maybe BCM3556 has troubles at IC101 #9 pin Replace IC101 Flash Memory Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 & Recheck Check P903 Maybe BCM3556(IC100) #16(TXAC-), #17(TXAC+), has troubles #32(TXBC-), #33(TXBC+) Check LVDS Cable Replace Cable Check Voltage LCD Module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 Serial MPEG_TS Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 (5.0V, 2.5V, 3.3V, 1.2V) & Recheck Check TP Clock, Data, Sync Maybe Tuner(TU1100) has R1111, R1103, R1102 problems Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Replace CXA2069(IC1102) CXA2069(IC1102) #53 Pin & Recheck Replace one of Check CVBS Signal R1190/Q1110/R195/C137 C137 & Recheck Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 R777/R778/R779/L703/L704/L705 R777, R778, R779 & Recheck Check Component Signal C127, C128, C129 Replace it C130, C131. C132 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 Replace one of R747/R751/IC701 IC1701 #11, #3 & Recheck Replace it or re-burn Check EEPROM (IC700) & Recheck Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 Serial MPEG_TS Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 Replace IC1102 & Recheck CXA2069(IC1102) #53 Pin Replace one of Check CVBS Signal R1190/Q1110/R195/C137 C137 & Recheck Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Check IC601 Voltage Level Replace one of +1.8V_HDMI, +3.3V_HDMI L601/L602/R665/R663 Check I2C Signal R670/R671/R605/R606/R616/R617 Replace It & Recheck /R639/R642 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 20V, 3.3V, 1.8V Replace It & Recheck L500,L501,L502,L503,IC504 Check BCM3556 I2S Output Replace It & Recheck R148, R149, R150 Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 Check video output trouble shooting Follow procedure All source audio Maybe BCM3556 internal audio trouble shooting DSP has problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 Replace one of R113/C141 C141 & Recheck Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 Check Signal Q1100/Q1102/R202/C204/ C204, C205 R203/C205& Recheck Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 Re-download EDID data Replace IC601 Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace it Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 Check 25MHz Clock Frequency Replace It at X1200 Maybe IC1200 has problems Maybe BCM3556(IC100) USB Replace It. block has problems. Replace It. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 Replace it at L1002/L1004 Check 2.6V voltage level Replace one of at L820 L821/Q804/L820 Check 1.2V voltage level Replace It L1000/L1001/L1003/L1005/L1006 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 C1037/R1008/R1009 & Recheck Check 3.3V voltage level Replace it at L1002/L1004 Check 2.6V voltage level Replace one of at L820 L821/Q804/L820 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 (5.0V, 2.5V, 3.3V, 1.2V) & Recheck Check TP Clock, Data, Sync Maybe Tuner(TU1101) has R1115, R1114, R1118 problems Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 (watch & record) Follow procedure All source audio Maybe BCM3556 internal audio trouble shooting DSP has problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 56 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 Replace CXA2069(IC1102) CXA2069(IC1102) #53 Pin & Recheck Replace one of Check CVBS Signal R1190/Q1110/R195/C137 C137 & Recheck Maybe BCM3556(IC100) has problems Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 58 RGB_LR SIF2 MNT_VOUT_DVR SIF_DVR MNT_L/ROUT HDMI4 SIDE HDMI_PORT4 Parallel TS HDMI0_BCM HDMI2 TDA9996 TDA9996 UI_HW_PORT1 CPLD CPLD HDMI1 UI_HW_PORT2 MPEG_TS Serial Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 Replace one of R113/C141 C141 & Recheck Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems. Replace It Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 60: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only Only for training and service purposes...
  • Page 61 Mar., 2009 Printed in Korea P/NO : MFL58993602...

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47lh40ed-sa