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LG 42LK450 Service Manual
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LG 42LK450 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LA01U
MODEL : 42LK450
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67021006 (1102-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LK450-UB
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 42LK450

  • 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 : LA01U MODEL : 42LK450 42LK450-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67021006 (1102-REV00) Printed in Korea...
  • Page 2 CONTENTS ....................2 SAFETY PRECAUTIONS ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 10 EXPLODED VIEW .................. 17 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 Temp : 0 ~ 40 deg Humidity : ~ 80 % Storage Environment Temp : -20 ~ 60 deg Humidity : -85 % Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 0.061 WHITE 0.279 0.292 Typ. 0.640 Typ. 42LK450-UB(AUO) -0.03 0.330 +0.03 GREEN 0.281 0.590 BLUE 0.144 0.060 WHITE 0.280 0.290 Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 DQA Medium 0.270 0.285 0.300 9300K 0.278 0.293 0.308 Warm 0.298 0.313 0.324 6500K 0.314 0.329 0.344 Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 1280*768 47.776 59.870 79.5 CVT(WXGA) 1360*768 47.712 60.015 85.50 VESA(WXGA) 1280*1024 63.981 60.020 108.00 VESA(SXGA) 1920*1080 66.587 59.934 138.50 WUXGA Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 HDTV 1080P 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Adjustment Instruction

    3.3 Etc (1) Ship-out mode (2) Service Option Default (3) USB Download(S/W Update, Option, Service only) (4) ISP Download (Optional) Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 60 | 3F 1F 52 10 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 03 Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...
  • Page 13 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 204 Gray pattern. Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 (2) Depending on destination, select KR or US, then on the lower Country option, select US, CA, MX. Selection is done using +, - KEY Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 METAL GND <Step4> <Step5> - Internal Pressure TEST = POWER CORD GND & LIVE & NEUTRAL • LEAKAGE CURRENT: At 0.5mArms Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 2. Select "Tool Option 1" and Push “OK” button. 3. Punch in the number. (Each model has their number.) 4. Updating is starting. Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: 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. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 IC102 NAND01GW3B2CN6E S7M-PLUS_DivX_MS10 NAND FLASH MEMORY +3.3V_Normal +3.3V_Normal LGE107DC-RP [S7M+ DIVX/MS10] NC_1 NC_29 /PF_CE0 NAND_FLASH_1G_NUMONYX NC_2 NC_28 IC101 EAN60762401 H : Serial Flash L : NAND Flash PCM_A[0-7] PCM_D[0-7] NC_3 NC_27 /PF_CE1 <T3 CHIP Config(AUD_LRCH)> H : 16 bit NC_4 NC_26 8 bit AR101...
  • Page 19 RSDS Power OPT +3.3V_Normal +1.26V_VDDC +1.26V_VDDC VDDC 1.26V MODEL OPTION VDD_RSDS:88mA VDDC : 2026mA MODEL OPTION VDD_RSDS PIN NAME PIN NO. HIGH OPT_0 OPT_4 L213 +2.5V_Normal BLM18PG121SN1D NO_FRC : LOW MODEL_OPT_0 NO FRC U3_INTERNAL : HIGH LOW U5_EXTERNALBOOT :HIGH HIGH L214 MODEL_OPT_4 50/60Hz LVDS...
  • Page 20 EAN61829001 EAN60899001 EAN61857101 EAN61857201 IC301-*3 IC301-*2 IC301-*1 K4B1G1646G-BCH9 IC301-*4 H5TQ1G63DFR-PBC K4B1G1646E-HCH9000 NT5CB64M16DP-CF FRC_DDR_1600_HYNIX FRC_DDR_1333_SS_NEW FRC_DDR_1333_SS FRC_DDR_1333_NANYA_NEW VREFCA VREFCA VREFCA VREFCA VREFDQ VREFDQ VREFDQ VREFDQ VCC1.5V_U3_DDR DDR3 1.5V By CAP - Place these Caps near Memory VCC1.5V_U3_DDR VDD_1 VDD_1 VDD_1 +1.5V_FRC_DDR A10/AP VDD_2 VDD_1...
  • Page 21 ST_3.5V--> 3.375V --> 3.46V +12V/+15V 20V-->3.51V --> 3.76V (3.59V) +3.5V_ST -> 3.375V +12V/+15V +3.5V_ST FROM LIPS & POWER B/D PANEL_POWER 24V-->3.78V --> 3.92V (3.79V) +3.5V_ST 12V -->3.58V --> 3.82V (3.68V) R488 18.5V-->3.5V --> 3.75V (3.59V) 100K IC408 APX803D29 0.01uF C442 C409 C438 0.015uF...
  • Page 22 CRYSTAL_KDS X1002-*1 32.768KHz +3.5V_ST NEW_SUB R4034 4.7K X1002 32.768KHz NEW_SUB R4035 4.7K CRYSTAL_EPSON R1034 4.7M CRYSTAL_KDS +3.5V_ST R1091 10K for Debugger MICOM_DEBUG TP1601 P1001 +3.5V_ST 12505WS-12A00 C1010 0.1uF TOP SIDE for reset. TP1602 MICOM_RESET MICOM_DEBUG +3.5V_ST NEC_ISP_Tx MICOM_DEBUG NEC_ISP_Rx R1047 MICOM_DEBUG C1003 1/16W...
  • Page 23 CONTROL IR & LED +3.5V_ST EYEQ/TOUCH_KEY R2405 R2411 R2404 EYEQ/TOUCH_KEY OLD_SUB NEW_SUB NEC_EEPROM_SCL P2401 P2402 12507WR-12L 12507WR-15L 5.6B C2408 18pF D2403 L2401 R2401 BLM18PG121SN1D KEY1 EYEQ/TOUCH_KEY EYEQ/TOUCH_KEY R2402 L2402 D2402 NEC_EEPROM_SDA BLM18PG121SN1D 5.6V R2412 5.6B KEY2 C2409 D2404 AMOTECH 18pF C2401 C2402 0.1uF...
  • Page 24 USB_DIODES EAN61849601 IC1450 L1451-*1 AP2191DSG CIS21J121 +5V_USB L1451 MLB-201209-0120P-N2 $0.077 OUT_2 IN_1 120-ohm C1452 OUT_1 IN_2 C1453 R1458 R1459 10uF C1451 0.1uF 1/8W 1/8W 22uF +3.3V_Normal R1455 4.7K USB1_CTL R1454 R1451 47 USB1_OCD SIDE_USB_DM SIDE_USB_DP D1451 D1452 CDS3C05HDMI1 CDS3C05HDMI1 5.6V 5.6V SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 25 HDMI EEPROM 5V_HDMI_1 +5V_Normal ENKMC2838-T112 D821 HDMI_1_RENESAS HDMI_1_ATMEL 5V_HDMI_1 5V_DET_HDMI_1 HDMI_1 IC801-*1 IC801 EDID_WP R1EX24002ASAS0A AT24C02BN-SH-T SHIELD Q802 R830 R896 HPD1 $0.055 2SC3052 C806 R884 R888 C802 0.1uF 2.7K 2.7K R804 0.1uF 1.8K DDC_SCL_1 R876 DDC_SDA_1 DDC_SDA_1 R875 DDC_SCL_1 5V_HDMI_2 +5V_Normal R824 HDMI_CEC...
  • Page 26 RGB/SPDIF/PC/HP New Item Development EARPHONE BLOCK HP_LOUT C1118 002:V7 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 C1119 10uF 002:V7 C1116 1000pF Q1102 R1128 MMBT3904-(F) MMBT3904-(F) Q1103 R1129 3.3K SIDE_HP_MUTE Q1106 2SC3052 RGB PC +5V_Normal PC AUDIO...
  • Page 27 RS232C 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 C1103 0.1uF DOUT1 RIN1 C1104 0.1uF ROUT1 S7_NEC_RXD DIN1 C1105 0.1uF DOUT2 DIN2 S7_NEC_TXD RIN2 ROUT2 EAN41348201 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 28 [51Pin LVDS Connector] (For FHD 60/120Hz) PANEL_VCC [30Pin LVDS Connector] [41Pin LVDS Connector] (For HD 60Hz_Normal) L702 (For FHD 120Hz) 120-ohm WAFER_FHD P705 P703 P704 FF10001-30 FI-RE51S-HF-J-R1500 FI-RE41S-HF-J-R1500 WAFER_FHD WAFER_FHD_120HZ C700 C709 C710 10uF 1000pF 0.1uF WAFER_FHD R713 PWM_DIM TP721 RXD4- TP722 OPC_OUT...
  • Page 29 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 A-MVREFCA B-MVREFDQ B-MVREFCA Close to DDR Power Pin Close to DDR Power Pin CLose to Saturn7M IC CLose to DDR3 CLose to Saturn7M IC...
  • Page 30 +3.3V_Normal +3.3V_Normal S_FLASH_MAIN_MACRONIX IC1401 MX25L8006EM2I-12G +3.3V_Normal C1401 /SPI_CS 0.1uF SO/SIO1 HOLD# SPI_SDO SCLK /FLASH_WP SPI_SCK R1405 SI/SIO0 SPI_SDI R1401 Q1401 KRC103S S_FLASH_MAIN_WINBOND IC1401-*1 W25Q80BVSSIG DO[IO1] HOLD[IO3] %WP[IO2] DI[IO0] SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2R 20101023...
  • Page 31 GP2R_LARGE_TUNER +5V_TU BOOSTER : CHINA OPT RF_SWITCH_CTL Pull-up can’t be applied L3701 BOOSTER_OPT because of MODEL_OPT_2 BLM18PG121SN1D BOOSTER_OPT BOOSTER_OPT R3734 R3743 close to TUNER Q3701 BOOSTER_OPT ISA1530AC1 R3737 R3762 2.2K CONTROL_ATTEN BOOSTER_OPT CN_2INPUT_H_LG3911 R3745 BOOSTER_OPT Q3702 FE_BOOSTER_CTL TU3701 2SC3052 LNA2_CTL TU3702 The pull-up/down of LNA2_CTL C3709...
  • Page 32 WOOFER AMP +3.3V_Normal +1.8V_AMP2 IC503 WOOFER AP1117E18G-13 ADJ/GND Vd=1.4V 120 mA WOOFER C5059 WOOFER C5069 C5004 0.1uF 0.1uF 10uF +24V WOOFER_L+ D5001 WOOFER WOOFER WOOFER 1N4148W R5013 R5073 100V L5004 R5058 10.0uH C5041 R5010 NRS6045T100MMGK 0.1uF 4.7K C5035 390pF WOOFER_L C5039 L5005 10.0uH...
  • Page 33 +1.8V_AMP +3.3V_Normal IC404 AP1117E18G-13 ADJ/GND Vd=1.4V 120 mA C434 C421 C446 0.1uF 0.1uF 10uF +24V SPK_L+ D501 1N4148W R519 R526 100V L506 R527 C536 R535 10.0uH 0.1uF 4.7K C529 390pF NRS6045T100MMGK SPEAKER_L C534 0.47uF 10.0uH C547 C521 C515 C519 0.01uF 10uF 0.1uF 0.1uF...
  • Page 34 Rear AV AV_CVBS_IN COMPONENT2 +3.3V_Normal REAR_AV C1643 C1648 D1619 47pF 220pF R1654 R1612 R1615 +3.3V_Normal REAR_AV REAR_AV COMP2_DET ETHERNET FOR DVB_T2 D1613 R1660 5.6V JK1604 REAR_AV PPJ233-01 AV_CVBS_DET [RD]E-LUG R1666 REAR_AV D1624 C1646 5.6V [GN]E-LUG [RD]O-SPRING 0.1uF R1619 REAR_AV [GN]O-SPRING [RD]CONTACT L-MONO COMP2_Y+...
  • Page 35 SIDE CVBS PHONE JACK (New Item Development) SIDE_CVBS L9903 BLM18PG121SN1D JK9901 KJA-PH-1-0177 SIDEAV_CVBS_IN SIDE_CVBS M5_GND +3.3V_Normal SIDE_CVBS C9907 R9907 [YL]E-LUG D9901 100pF SIDE_CVBS ADUC30S03010L_AMODIODE SIDE_CVBS [YL]O-SPRING R9915 R9911 M3_DETECT SIDEAV_DET [YL]CONTACT C9901 100pF D9902 SIDE_CVBS [WH]O-SPRING 5.6V ADMC5M03200L_AMODIODE [RD]CONTACT SIDE_CVBS SIDE_CVBS L9902 SIDE_AV_GENDER...
  • Page 36 * Option name of this page : CI_SLOT (because of Hong Kong) CI Region CI SLOT +5V_CI_ON CI TS INPUT CI_DATA[0-7] AR1905 FE_TS_DATA[7] +5V_Normal CI_MDI[7] FE_TS_DATA[6] C1906 CI_MDI[6] FE_TS_DATA[5] 10uF CI_MDI[5] FE_TS_DATA[4] CI_MDI[4] EAG41860102 CI_SLOT_JACK_LV3400 AR1906 P1901 FE_TS_DATA[3] P1902 CI_MDI[3] /CI_CD1 FE_TS_DATA[2] 10067972-000LF...
  • Page 37 6.5T_GAS 12.5T_GAS 9.5T_GAS 7.5T_GAS 8.5T_GAS 5.5T_GAS MDS62110206 MDS62110205 MDS62110209 MDS61887708 MDS61887710 MDS62110204 GAS1 GAS1-*2 GAS1-*5 GAS1-*4 GAS1-*3 GAS1-*1 7.5T_GAS 9.5T_GAS 5.5T_GAS 6.5T_GAS 12.5T_GAS 8.5T_GAS MDS62110205 MDS62110204 MDS61887710 MDS62110209 MDS61887708 MDS62110206 GAS2-*2 GAS2-*1 GAS2-*3 GAS2-*5 GAS2-*4 GAS2 9.5T_GAS 7.5T_GAS 8.5T_GAS 12.5T_GAS 5.5T_GAS MDS62110209 MDS61887710...
  • Page 38 L/DIM_LED/DRIVER +3.3V_Normal P2100 12507WR-08L L/DIM_SCLK L/DIM_MOSI LED_DRIVER_D/L_SCL LED_DRIVER_D/L_SDA V_SYNC C2100 C2101 C2102 C2103 C2104 18pF 18pF 18pF 18pF 18pF SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. GP2R 20101023 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR L/DIM_LED THE CRITICAL COMPONENTS IN THE...
  • Page 39 IC102 NAND01GW3B2CN6E S7M-PLUS_DivX_MS10 NAND FLASH MEMORY +3.3V_Normal +3.3V_Normal LGE107DC-RP [S7M+ DIVX/MS10] NC_1 NC_29 /PF_CE0 NAND_FLASH_1G_NUMONYX NC_2 NC_28 IC101 EAN60762401 H : Serial Flash L : NAND Flash PCM_A[0-7] PCM_D[0-7] NC_3 NC_27 /PF_CE1 <T3 CHIP Config(AUD_LRCH)> H : 16 bit NC_4 NC_26 8 bit AR101...
  • Page 40 RSDS Power OPT +3.3V_Normal +1.26V_VDDC +1.26V_VDDC VDDC 1.26V MODEL OPTION VDD_RSDS:88mA VDDC : 2026mA MODEL OPTION VDD_RSDS PIN NAME PIN NO. HIGH OPT_0 OPT_4 L213 +2.5V_Normal BLM18PG121SN1D NO_FRC : LOW MODEL_OPT_0 FRC_HW_OPT NO FRC U3_INTERNAL : HIGH LOW U5_EXTERNALBOOT :HIGH HIGH L214 MODEL_OPT_4 50/60Hz LVDS...
  • Page 41 EAN61829001 EAN61857101 EAN61857201 IC301-*3 IC301-*2 K4B1G1646G-BCH9 IC301-*4 H5TQ1G63DFR-PBC NT5CB64M16DP-CF FRC_DDR_1600_HYNIX FRC_DDR_1333_SS_NEW FRC_DDR_1333_NANYA_NEW VREFCA VREFCA VREFCA VREFDQ VREFDQ VREFDQ VCC1.5V_U3_DDR DDR3 1.5V By CAP - Place these Caps near Memory VCC1.5V_U3_DDR VDD_1 VDD_1 +1.5V_FRC_DDR A10/AP VDD_2 VDD_1 A10/AP VDD_2 VDD_3 A10/AP VDD_2 VDD_3 A12/BC...
  • Page 42 ST_3.5V--> 3.375V --> 3.46V +12V/+15V 20V-->3.51V --> 3.76V (3.59V) +3.5V_ST -> 3.375V +12V/+15V +3.5V_ST FROM LIPS & POWER B/D PANEL_POWER 24V-->3.78V --> 3.92V (3.79V) +3.5V_ST 12V -->3.58V --> 3.82V (3.68V) R488 18.5V-->3.5V --> 3.75V (3.59V) 100K IC408 R405-*1 R407-*1 NCP803SN293 0.01uF C442 C409...
  • Page 43 CRYSTAL_KDS X1002-*1 32.768KHz +3.5V_ST NEW_SUB R4034 4.7K X1002 32.768KHz NEW_SUB R4035 4.7K CRYSTAL_EPSON R1034 4.7M CRYSTAL_KDS +3.5V_ST R1091 10K for Debugger MICOM_DEBUG_WAFER TP1601 P1001 +3.5V_ST 12505WS-12A00 C1010 0.1uF TOP SIDE for reset. TP1602 MICOM_RESET MICOM_DEBUG +3.5V_ST NEC_ISP_Tx MICOM_DEBUG NEC_ISP_Rx R1047 MICOM_DEBUG C1003 1/16W...
  • Page 44 CONTROL IR & LED +3.5V_ST EYEQ/TOUCH_KEY R2405 R2411 R2404 EYEQ/TOUCH_KEY OLD_SUB NEW_SUB NEC_EEPROM_SCL P2401 P2402 12507WR-12L 12507WR-15L 5.6V C2408 18pF D2403 L2401 R2401 BLM18PG121SN1D KEY1 EYEQ/TOUCH_KEY EYEQ/TOUCH_KEY R2402 L2402 D2402 NEC_EEPROM_SDA BLM18PG121SN1D 5.6V R2412 5.6V KEY2 C2409 D2404 AMOTECH 18pF C2401 C2402 0.1uF...
  • Page 45 USB_DIODES EAN61849601 IC1450 L1451-*1 AP2191DSG CIS21J121 +5V_USB L1451 MLB-201209-0120P-N2 $0.077 OUT_2 IN_1 120-ohm C1452 OUT_1 IN_2 C1453 R1458 R1459 10uF C1451 0.1uF 1/8W 1/8W 22uF +3.3V_Normal R1455 4.7K USB_JACK USB1_CTL R1454 USB_JACK_LV3400 R1451 47 USB1_OCD JK1450-*1 JK1450 SIDE_USB_DM SIDE_USB_DP D1451 RCLAMP0502BA SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 46 HDMI EEPROM 5V_HDMI_1 +5V_Normal ENKMC2838-T112 D821 HDMI_1_RENESAS HDMI_1_ATMEL 5V_HDMI_1 5V_DET_HDMI_1 HDMI_1 IC801-*1 IC801 EDID_WP R1EX24002ASAS0A AT24C02BN-SH-T SHIELD Q802 R830 R896 HPD1 $0.055 2SC3052 C806 R884 R888 C802 0.1uF 2.7K 2.7K R804 0.1uF 1.8K DDC_SCL_1 R876 DDC_SDA_1 DDC_SDA_1 R875 DDC_SCL_1 5V_HDMI_2 +5V_Normal R824 HDMI_CEC...
  • Page 47 RGB/SPDIF/PC/HP New Item Development EARPHONE BLOCK HP_LOUT C1118 002:V7 10uF HEAD_PHONE 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 C1119 10uF 002:V7 C1116 1000pF Q1102 R1128 MMBT3904-(F) MMBT3904-(F) Q1103 R1129 3.3K SIDE_HP_MUTE Q1106 2SC3052 RGB PC +5V_Normal...
  • Page 48 RS232C 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 C1103 0.1uF DOUT1 RIN1 C1104 0.1uF ROUT1 S7_NEC_RXD DIN1 C1105 0.1uF DOUT2 DIN2 S7_NEC_TXD RIN2 ROUT2 EAN41348201 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 49 [51Pin LVDS Connector] (For FHD 60/120Hz) PANEL_VCC [30Pin LVDS Connector] [41Pin LVDS Connector] (For HD 60Hz_Normal) L702 (For FHD 120Hz) 120-ohm WAFER_FHD P705 P703 P704 FF10001-30 FI-RE51S-HF-J-R1500 FI-RE41S-HF-J-R1500 WAFER_FHD WAFER_FHD_120HZ C700 C709 C710 10uF 1000pF 0.1uF WAFER_FHD R713 PWM_DIM TP721 RXD4- TP722 OPC_OUT...
  • Page 50 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 A-MVREFCA B-MVREFDQ B-MVREFCA Close to DDR Power Pin Close to DDR Power Pin CLose to Saturn7M IC CLose to DDR3 CLose to Saturn7M IC...
  • Page 51 +3.3V_Normal +3.3V_Normal S_FLASH_MAIN_MACRONIX IC1401 MX25L8006EM2I-12G +3.3V_Normal C1401 /SPI_CS 0.1uF SO/SIO1 HOLD# SPI_SDO SCLK /FLASH_WP SPI_SCK R1405 SI/SIO0 SPI_SDI R1401 Q1401 KRC103S S_FLASH_MAIN_WINBOND IC1401-*1 W25Q80BVSSIG DO[IO1] HOLD[IO3] %WP[IO2] DI[IO0] SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP2R 20101023...
  • Page 52 GP2R_LARGE_TUNER +5V_TU BOOSTER : CHINA OPT RF_SWITCH_CTL Pull-up can’t be applied L3701 BOOSTER_OPT because of MODEL_OPT_2 BLM18PG121SN1D BOOSTER_OPT BOOSTER_OPT R3734 R3743 close to TUNER Q3701 BOOSTER_OPT ISA1530AC1 R3737 R3762 2.2K CONTROL_ATTEN BOOSTER_OPT CN_2INPUT_H_LG3911 R3745 BOOSTER_OPT Q3702 FE_BOOSTER_CTL TU3701 2SC3052 LNA2_CTL TU3702 The pull-up/down of LNA2_CTL C3709...
  • Page 53 +1.8V_AMP +3.3V_Normal IC404 AP1117E18G-13 ADJ/GND Vd=1.4V 120 mA C434 C421 C446 0.1uF 0.1uF 10uF +24V SPK_L+ D501 1N4148W R519 R526 100V L506 R527 C536 R535 10.0uH 0.1uF 4.7K C529 390pF NRS6045T100MMGK SPEAKER_L C534 0.47uF 10.0uH C547 C521 C515 C519 0.01uF 10uF 0.1uF 0.1uF...
  • Page 54 Rear AV AV_CVBS_IN COMPONENT2 +3.3V_Normal REAR_AV C1643 C1648 D1619 47pF 220pF R1654 R1612 R1615 +3.3V_Normal REAR_AV REAR_AV COMP2_DET ETHERNET FOR DVB_T2 D1613 R1660 5.6V JK1604 REAR_AV PPJ233-01 AV_CVBS_DET [RD]E-LUG R1666 REAR_AV D1624 C1646 5.6V [GN]E-LUG [RD]O-SPRING 0.1uF R1619 REAR_AV [GN]O-SPRING [RD]CONTACT L-MONO COMP2_Y+...
  • Page 55 SIDE CVBS PHONE JACK (New Item Development) SIDE_CVBS L9903 BLM18PG121SN1D JK9901 KJA-PH-1-0177 SIDEAV_CVBS_IN SIDE_CVBS M5_GND +3.3V_Normal SIDE_CVBS C9907 R9907 [YL]E-LUG D9901 100pF SIDE_CVBS ADUC30S03010L_AMODIODE SIDE_CVBS [YL]O-SPRING R9915 R9911 M3_DETECT SIDEAV_DET [YL]CONTACT C9901 100pF D9902 SIDE_CVBS [WH]O-SPRING 5.6V ADMC5M03200L_AMODIODE [RD]CONTACT SIDE_CVBS SIDE_CVBS L9902 SIDE_AV_GENDER...
  • Page 56 * Option name of this page : CI_SLOT (because of Hong Kong) CI Region CI SLOT +5V_CI_ON CI TS INPUT CI_DATA[0-7] AR1905 FE_TS_DATA[7] +5V_Normal CI_MDI[7] FE_TS_DATA[6] C1906 CI_MDI[6] FE_TS_DATA[5] 10uF CI_MDI[5] FE_TS_DATA[4] CI_MDI[4] EAG41860102 CI_SLOT_JACK_LV3400 AR1906 P1901 FE_TS_DATA[3] P1902 CI_MDI[3] /CI_CD1 FE_TS_DATA[2] 10067972-000LF...
  • Page 57 6.5T_GAS 12.5T_GAS 9.5T_GAS 7.5T_GAS 8.5T_GAS 5.5T_GAS MDS62110206 MDS62110205 MDS62110209 MDS61887708 MDS61887710 MDS62110204 GAS1 GAS1-*2 GAS1-*5 GAS1-*4 GAS1-*3 GAS1-*1 7.5T_GAS 9.5T_GAS 5.5T_GAS 6.5T_GAS 12.5T_GAS 8.5T_GAS MDS62110205 MDS62110204 MDS61887710 MDS62110209 MDS61887708 MDS62110206 GAS2-*2 GAS2-*1 GAS2-*3 GAS2-*5 GAS2-*4 GAS2 9.5T_GAS 7.5T_GAS 8.5T_GAS 12.5T_GAS 5.5T_GAS MDS62110209 MDS61887710...
  • Page 58 +3.3V_Normal L/DIM_LED/DRIVER +3.3V_Normal P2100 12507WR-08L R2102 R2103 FRC_L/DIM_REVERSE_SEL L/DIM_SCLK LED_DRIVER_D/L L/DIM_MOSI R4029 LED_DRIVER_D/L_SCL R4028 LED_DRIVER_D/L_SDA LED_DRIVER_D/L V_SYNC C2100 C2101 C2102 C2103 C2104 18pF 18pF 18pF 18pF 18pF SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. GP2R 20101023 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS...
  • Page 59 TI solution RF-3D OPTION +3.3V_Normal +3.3V_Normal P3401 12507WR-12L L3401 3D_SG 120-ohm 3D_SG 3.3V R3410 R3411 R3412 3D_SG R3402 2.7K 2.7K 2.7K M_REMOTE_RX 3D_SG 3D_SG 3D_SG 3D_SG R3408 M_REMOTE_TX 3D_SG R3409 RESET M_RFModule_RESET 3D_SG FREQ. GPOIO_0 GPOIO_1 GPOIO_2 R3407 DC_MREMOTE 3D_SG 3D Off R3401 DD_MREMOTE...

  • Page 61: Trouble Shooting Guide

    Check Inverter Control & Error Out P403 18 pin : High Check Power Board or Module P403 24 pin : low Change Module Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 62 IC3703 2 pin : 1.2V Check IF_P/N Signal Bad Tuner. Replace Tuner. TU3702 17/18 Pin Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 63 IC3703 2 pin : 1.2V Check CVBS Signal Bad Tuner. Replace Tuner. TU3702 11 Pin Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

  • Page 64: Component Video

    Replace Jack - C211/213/215/217/218/220/222/224 Check COMP_DET Signal Replace R1614, R4223 or R1615 Check Mstar LVDS Output Replace Mstar(IC100) or Main Board. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 65 H/V_Sync/R/G/B Signal Line Replace Jack -R4024/4025/C204/206/208/210 Check DSUB_DET Replace R1146 or R1147 Check Mstar LVDS Output Replace Mstar(IC100) or Main Board. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 Check HDMI Signal Replace Main Board If no problem, check signal line Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 67 1, 2, 3, 4 pin. Replace connector Check Connector & P501 if found to be damaged. Check speaker resistance Replace speaker. and connector damage. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 68 IC3703 2 pin : 1.2V Check IF_P/N Signal Bad Tuner. Replace Tuner. TU3702 17/18 Pin Follow procedure ‘8. All source audio’ trouble shooting guide. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 69 IC3703 2 pin : 1.2V Check CVBS Signal Bad Tuner. Replace Tuner. TU3702 Follow procedure ‘8. All source audio’ trouble shooting guide. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 70 Check JK1104 & Signal Line Replace Jack Follow procedure ‘8. All source audio’ trouble shooting guide. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 71 Is the voltage 5V? The problem may be caused by Replace Mstar(IC100) or Main Board. USB device or file in it. Change USB device. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 72 This block is applied in LK450 only. ※ RGB / HDMI EEPROM is applied HDMI EEPROM (Soft Touch model) multi item(AT24C16BN-SH-T or R1EX24002ASAS0A) AT24C02BN-SH-T Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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