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LG 42LD460 Service Manual
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LG 42LD460 Service Manual

Chassis: lb01b
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See also: Owner's Manual
LCD TV

SERVICE MANUAL

CHASSIS : LB01B
MODEL : 42LD450/460
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62865307 (1007-REV01)
All manuals and user guides at all-guides.com
42LD461C
North/Latin America
Europe/Africa
Asia/Oceania
42LD450/460-TA
42LD461C-TA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 42LD460

  • Page 1: Service Manual

    All manuals and user guides at all-guides.com 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 : LB01B MODEL : 42LD450/460 42LD450/460-TA MODEL : 42LD461C 42LD461C-TA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62865307 (1007-REV01) Printed in Korea...

  • Page 2: Table Of Contents

    PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 BLOCK DIAGRAM...................15 EXPLODED VIEW .................. 16 SVC. SHEET ....................Copyright © 2010 LG Electronics. Inc. All rights reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2010 LG Electronics. Inc. All rights reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Copyright © 2010 LG Electronics. Inc. All rights 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 © 2010 LG Electronics. Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    4) Ta = 25 ºC ± 2 °C, VLCD = 12.0 V, fv = 60 Hz, Dclk = 74.25 MHz, VBR_A = 1.65 V, EXTV = 100 % BR-B Copyright © 2010 LG Electronics. Inc. All rights reserved. - 6 - LGE Internal Use Only...
  • Page 7 47.72 59.8 84.75 WXGA 1280*1024 63.981 60.02 108.875 SXGA FHD Model 1920*1080 66.587 59.93 138.625 WUXGA FHD model Copyright © 2010 LG Electronics. Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Hdmi Input

    59.8 84.75 WXGA HDCP 1280*1024 63.981 60.02 108.875 SXGA HDCP/FHD model 1920*1080 67.5 60.00 138.625 WUXGA HDCP/FHD model Copyright © 2010 LG Electronics. Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Adjustment Instruction

    “Read” 4) Click “Connect” tab. If “Can’t” is displayed, check connection between computer, jig, and set. Copyright © 2010 LG Electronics. Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 10770 52228 26892 * Display and Sound check is executed by Remote control. 4) Completed selecting Tool option. Copyright © 2010 LG Electronics. Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Edid Data

    **: Month : Controlled / Data:00 R Gain ***:Year : Controlled G Gain ****:Check sum B Gain R Cut G Cut B Cut Copyright © 2010 LG Electronics. Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Auto Download

    MODEL NAME(HEX) Version Digital : 1 HDMI1 67030C001000B82D Revision Digital : 3 HDMI2 67030C002000B82D HDMI3 67030C003000B82D HDMI4 67030C004000B82D Copyright © 2010 LG Electronics. Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 2) Go to the menu ‘5.Model Number D/L’ like below photo. 3) Input the Factory model name(ex 42LD450-ZA) or Serial number like photo. Copyright © 2010 LG Electronics. Inc. All rights reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 (3) Result value i 01 OK 1d1852d21c1ed5dcx CI+ key Value => Check the Download to CI+ Key value in LGset. Copyright © 2010 LG Electronics. Inc. All rights reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Block Diagram

    All manuals and user guides at all-guides.com BLOCK DIAGRAM Copyright © 2010 LG Electronics. Inc. All rights reserved. - 15 - LGE Internal Use Only Only for training and service purposes...

  • Page 16: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All rights reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 All manuals and user guides at all-guides.com IC102 HY27UF082G2B-TPCB NAND FLASH MEMORY +3.3V_Normal +3.3V_Normal NC_1 NC_29 LGE107D (S7M Divx_Non RM) 2GBIT /PF_CE0 NC_2 NC_28 H : Serial Flash <T3 CHIP Config(AUD_LRCH)> IC101 L : NAND Flash PCM_A[0-7] NC_3 NC_27 /PF_CE1 Boot from SPI flash : 1’b0 PCM_D[0-7] H : 16 bit...
  • Page 18 All manuals and user guides at all-guides.com X1002-*1 32.768KHz CRYSTAL_EPSON CRYSTAL_KDS X1002 32.768KHz R1034 4.7M CRYSTAL_KDS R1091 10K +3.5V_ST for Debugger SW1001 JTP-1127WEM MICOM_DEBUG +3.5V_ST P1001 C1003 12505WS-12A00 0.1uF C1010 0.1uF MICOM_RESET R1076 NEC_ISP_Tx R1078 NEC_ISP_Rx R1047 1/16W R1010 OCD1A EDID_WP R1081 OCD1B...
  • Page 19 All manuals and user guides at all-guides.com COMMON AREA New Item Development EARPHONE BLOCK HP_LOUT EXCEPT_CHINA_HOTEL_OPT C1118 090:V9 10uF C1115 1000pF R1125 JK3301 Q1101 +3.3V_Normal MMBT3904-(F) KJA-PH-0-0177 MMBT3904-(F) Q1104 +3.5V_ST R1155 DETECT HP_ROUT HP_DET EXCEPT_CHINA_HOTEL_OPT C1119 10uF 090:V8 C1116 1000pF Q1102 R1128 MMBT3904-(F)
  • Page 20 All manuals and user guides at all-guides.com RS232C IR_OUT R1122 R1123 JP1121 R1124 +3.5V_ST JP1122 D1107 D1108 CDS3C30GTH CDS3C30GTH C1101 0.33uF SPG09-DB-009 IC1101 JK1101 C1106 MAX3232CDR 0.1uF C1102 0.1uF +3.5V_ST C1103 0.1uF DOUT1 R1109 R1114 RIN1 4.7K 4.7K C1104 0.1uF ROUT1 R1157 0 S7_RXD1...
  • Page 21 All manuals and user guides at all-guides.com (New Item Developmen H:9.2mm) SIDE_AV_OPT SIDE_AV L3303 BLM18PG121SN1D SIDEAV_CVBS_IN SIDE_AV_OPT +3.3V_Normal SIDE_AV_OPT C3304 R3301 D3301 100pF [YL]E-LUG SIDE_AV_OPT SIDE_AV_OPT R3305 [YL]O-SPRING R3302 SIDEAV_DET C3301 [YL]CONTACT SIDE_AV_OPT 100pF D3302 SIDE_AV_OPT 5.6V [WH]O-SPRING SIDE_AV_OPT SIDE_AV_OPT [RD]CONTACT L3301 BLM18PG121SN1D...
  • Page 22 All manuals and user guides at all-guides.com USB_DIODES IC1450 AP2191SG-13 +5V_USB L1451 MLB-201209-0120P-N2 $0.077 OUT_2 IN_1 120-ohm C1452 OUT_1 IN_2 C1453 10uF C1451 0.1uF 22uF +3.3V_Normal R1455 4.7K R1456 0 USB1_CTL R1454 R1451 47 USB1_OCD R1453 SIDE_USB_DM R1452 0 SIDE_USB_DP D1451 D1452 CDS3C05HDMI1...
  • Page 23 All manuals and user guides at all-guides.com VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR VCC_1.5V_DDR DDR3 1.5V By CAP - Place these Caps near Memory VCC_1.5V_DDR DDR3 1.5V By CAP - Place these Caps near Memory A-MVREFDQ B-MVREFDQ A-MVREFCA B-MVREFCA Close to DDR Power Pin Close to DDR Power Pin CLose to Saturn7M IC CLose to DDR3...
  • Page 24 All manuals and user guides at all-guides.com +3.3V_Normal +3.3V_Normal S_FLASH IC1401 MX25L8005M2I-15G +3.3V_Normal C1401 /SPI_CS 0.1uF HOLD# SPI_SDO R1402 SCLK /FLASH_WP SPI_SCK R1405 SPI_SDI R1401 Q1401 KRC103S SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2_Saturn7M Ver.
  • Page 25 All manuals and user guides at all-guides.com LGIT CAN H/N TUNER for US&KOR&BRAZIL&TAIWAN&AUS RF_S/W_CTL BST_CTL +B1[5V] NC_1[RF_AGC] NC_2 SCLT SDAT NC_3 NC_4 VIDEO +5V_TU OPTION : BOOSTER +B2[1.2V] +B3[3.3V] RESET IF/AGC L5001 DIF_1[N] MLB-201209-0120P-N2 DIF_2[P] OPTION : RF S/W BOOSTER_OPT SHIELD TU5001-*1 TDTR-T035F...
  • Page 26 All manuals and user guides at all-guides.com PANASONIC (ISDB-T) MN884433 ISDB_DEMOD +1.2V_DE +3.3V_DE R2910 FE_TS_VAL_ERR ISDB_DEMOD ISDB_DEMOD ISDB_DEMOD R2911 ISDB_DEMOD ISDB_DEMOD ISDB_DEMOD FE_TS_SYNC C2913 C2916 C2917 C2920 C2922 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF ISDB_DEMOD R2912 FE_TS_DATA[0] ISDB_DEMOD (FE_TS_SERIAL) ISDB_DEMOD C2911 R2913 0.1uF FE_TS_CLK...
  • Page 27 All manuals and user guides at all-guides.com Panasonic Demodulator Power(3.3V,1.2V) ISDB_POWER IC3001 SC4215ISTRT +3.3V_DE +3.3V_DE +3.3V_Normal NC_1 +1.2V_DE ISDB_POWER ISDB_POWER R3004 L3001 BLM18PG121SN1D 5.1K ISDB_POWER ISDB_POWER ISDB_POWER ISDB_POWER C3003 C3004 C3001 C3002 ISDB_POWER 0.1uF 10uF NC_2 NC_3 ISDB_POWER C3005 C3006 0.1uF 0.1uF 0.1uF...
  • Page 28 All manuals and user guides at all-guides.com NON CI Region /PCM_REG /PCM_CD /PCM_OE PCM_5V_CTL /PCM_WE /PCM_CE FE_TS_DATA[0] /PCM_IORD FE_TS_DATA[1] /PCM_IOWR /PCM_IRQA FE_TS_DATA[2] FE_TS_DATA[3] FE_TS_SYNC FE_TS_VAL_ERR PCM_RST FE_TS_DATA[4] /PCM_WAIT FE_TS_CLK FE_TS_DATA[5] FE_TS_DATA[6] CI_TS_CLK FE_TS_DATA[7] CI_TS_VAL CI_TS_SYNC FE_TS_DATA[0-7] PCM_D[0] PCM_D[1] CI_TS_DATA[0] PCM_D[2] PCM_A[0] CI_TS_DATA[1] PCM_D[3]...
  • Page 29 All manuals and user guides at all-guides.com NON Motion Remocon Region TP2501 M_REMOTE_RX M_REMOTE_TX TP2502 TP2503 RF_RESET RF_ENABLE TP2504 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2_Saturn7M Ver.
  • Page 30 All manuals and user guides at all-guides.com NON CHINA HOTEL AMP_MUTE_HOTEL SPK_R+_HOTEL SPK_R-_HOTEL SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. Ver. 1.0 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2_Saturn7M ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON CHINA HOTEL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 31 All manuals and user guides at all-guides.com NON-WIRELESS MODEL R2627 S7_RXD S7_RXD1 R2626 S7_TXD S7_TXD1 WIRELESS_SW_CTRL WIRELESS_PWR_EN WIRELESS_DETECT WIRELESS_DL_RX WIRELESS_DL_TX SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2_Saturn7M Ver.
  • Page 32 All manuals and user guides at all-guides.com +3.3V_Normal MODEL OPTION 090:AI26 MODEL OPTION +1.26V_VDDC VDDC VDDC 1.26V PIN NAME PIN NO. HIGH VDDC : 2026mA L7302 MODEL_OPT_0 BLM18SG700TN1D NO FRC MODEL_OPT_1 MINI LVDS LVDS R7300 IF_AGC_SEL MODEL_OPT_0 R7301 MODEL_OPT_2 DDR_512MB DDR_256MB LNA2_CTL MODEL_OPT_1...
  • Page 33 All manuals and user guides at all-guides.com IC101 LGE107D (S7M Divx_Non RM) S7M_DIVX & MS10 RXBCK+ FRC_DDR3_A0/DDR2_NC ACKP/RLV3P/RED[3] AF16 FRC_DDR3_A1/DDR2_A6 ACKM/RLV3N/RED[2] RXBCK- FRC_DDR3_A2/DDR2_A7 A0P/RLV0P/RED[9] RXB0+ FRC_DDR3_A3/DDR2_A1 A0M/RLV0N/RED[8] RXB0- AD14 RXB1+ FRC_DDR3_A4/DDR2_CASZ A1P/RLV1P/RED[7] RXB1- FRC_DDR3_A5/DDR2_A10 A1M/RLV1N/RED[6] AF15 FRC_DDR3_A6/DDR2_A0 A2P/RLV2P/RED[5] RXB2+ FRC_DDR3_A7/DDR2_A5 A2M/RLV2N/RED[4] RXB2- AE15...
  • Page 34 All manuals and user guides at all-guides.com +5V_Normal +12V/+15V +24V/+15V +3.5V_ST PANEL_POWER R7561 24V-->3.48V 5V_PANEL 100K +24V/+15V +24V_LED 12V_PANEL 15V-->3.56V L7504 MLB-201209-0120P-N2 Adapter ST_3.5V-->3.5V --> 3.375V NON_Adapter P7500 Adapter C7529 IC7509 C7525 C7526 L7503 L7912 10uF 0.01uF 0.1uF NCP803SN293 SMAW200-12 IC7509-*1 MLB-201209-0120P-N2 MLB-201209-0120P-N2...
  • Page 35 All manuals and user guides at all-guides.com CONTROL +3.5V_ST IR & LED P7600 12507WR-03L R7606 R7605 L7600 BLM18PG121SN1D L7601 BLM18PG121SN1D C7600 C7601 0.1uF 0.1uF EYEQ/TOUCH_KEY 12PIN_STRAIGHT R7618 12PIN_ANGLE D7604 P7601-*1 NEC_EEPROM_SCL P7601 CDS3C05HDMI1 12507WS-12L 5.6V 12507WR-12L C7609 1000pF L7602 R7600 BLM18PG121SN1D EYEQ/TOUCH_KEY KEY1...
  • Page 36 All manuals and user guides at all-guides.com HDMI EEPROM 5V_HDMI_1 +5V_Normal SIDE_HDMI 5V_HDMI_1 5V_DET_HDMI_1 HDMI_1 5V_HDMI_4 5V_DET_HDMI_4 ENKMC2838-T112 D7704 HDMI_1 JACK_GND SHIELD R7744 R7728 Q7702 IC7700 Q7700 HPD4 EDID_WP HPD1 R7730 2SC3052 R7700 2SC3052 AT24C02BN-10SU-1.8 $0.253 $0.253 C7702 C7701 R7731 0.1uF R7701 0.1uF...
  • Page 37 All manuals and user guides at all-guides.com MAIN1 BLOCK MICOM BLOCK 5V_DET_HDMI_3 TP7013 FRC_RESET TP7014 WIRELESS_DETECT TP7032 SCAN_BLK2 TP7016 TP7033 WIRELESS_PWR_EN SCAN_BLK1/OPC_OUT TP7017 TP7034 WIRELESS_SW_CTRL WIRELESS_DL_RX RF_ENABLE TP7018 TP7035 TP7019 WIRELESS_DL_TX TP7036 RF_RESET TP7020 /PIF_SPI_CS TP7021 ET_RXER TP7022 /RST_PHY TP7023 M_REMOTE_RX TP7024 M_REMOTE_TX...
  • Page 38 All manuals and user guides at all-guides.com +1.8V_AMP +3.3V_Normal IC7800 AP1117E18G-13 INADJ/GND 120 mA C7800 C7802 C7803 0.1uF 0.1uF 10uF AMP_VCC IC7800-*1 KIA1117ST18 SPK_L+ D7800 C7844 ADJ/GND 0.01uF 1N4148W R7812 R7819 L7804 100V AD-8770 R7820 C7840 R7809 R7828 0.1uF 4.7K C7834 390pF SPEAKER_L...
  • Page 39 All manuals and user guides at all-guides.com [51Pin LVDS Connector] (For FHD 60Hz) PANEL_VCC L7900 120-ohm must be located Bottom side P7900 TF05-51S C7900 C7901 C7902 10uF 1000pF 0.1uF [30Pin LVDS Connector] [30Pin LVDS Connector] (For HD 60Hz_Small) (For HD 60Hz_Normal) PANEL_VCC [30Pin LVDS Connector] SMALL_NC1...
  • Page 40 All manuals and user guides at all-guides.com R9815 SIGN4271 AV_R_IN C9805 R9820 R9810 D9806 1000pF 470K 5.6V R9816 AV_L_IN C9806 R9821 D9807 R9813 1000pF +3.3V_Normal 5.6V 470K R9802 AV_CVBS_DET R9803 D9800 C9800 100pF 5.6V AV_CVBS_IN D9809 R9812 C9807 10pF JK9800 PPJ238-01 [RD1]E-LUG [RD1]O-SPRING...
  • Page 41 All manuals and user guides at all-guides.com...

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