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LG 42LV3500 Service Manual
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LG 42LV3500 Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LT01M
MODEL : 42LV3500
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67127804 (1110-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LV3500-DG
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 42LV3500

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LT01M MODEL : 42LV3500 42LV3500-DG CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67127804 (1110-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............17 EXPLODED VIEW .................. 23 SVC. SHEET ....................Copyright LG Electronics. Inc. All right 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 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 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: Specification

    1) Performance: LGE TV test method followed 2) Demanded other specification - Safety: CE / ICE / BSMI specification EMI: CE / ICE / BSMI Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 LC320WUN-SCA2(LGD) 150W 37” FHD(EEFL) LC370WUE-SCA1(LGD) 37” FHD(LED) LC370EUN-SDV2(LGD) 175W 42” LC420WUE-SCA2(LGD) 42” T420HW08 V1(AUO) 110W 42.02” LC420EUN-SDV3(LGD) 130W 46.96” LC470EUE-SDV1(LGD) Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 All white/ All black White 0.280 0.290 - 0.03 0.640 +0.03 CIE Color Coordinates 0.330 Green 0.281 0.590 Blue 0.150 0.050 Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 All white/ All black White 0.280 0.290 - 0.03 0.648 +0.03 CIE Color Coordinates 0.321 Green 0.304 0.617 Blue 0.149 0.063 Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 All white/ All black White 0.280 0.290 - 0.03 0.640 +0.03 CIE Color Coordinates 0.330 Green 0.290 0.600 Blue 0.150 0.060 Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 All white/ All black White 0.279 0.292 - 0.03 0.642 +0.03 CIE Color Coordinates 0.334 Green 0.292 0.607 Blue 0.146 0.056 Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 All white/ All black White 0.280 0.290 - 0.03 0.640 +0.03 CIE Color Coordinates 0.330 Green 0.320 0.620 Blue 0.150 0.050 Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 All white/ All black White 0.280 0.290 - 0.03 0.630 +0.03 CIE Color Coordinates 0.330 Green 0.320 0.620 Blue 0.150 0.050 Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 All white/ All black White 0.279 0.292 - 0.03 0.639 +0.03 CIE Color Coordinates 0.343 Green 0.316 0.595 Blue 0.152 0.058 Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 WXGA 1360*768 47.72 59.8 84.75 WXGA 1280*1024 63.595 60.0 108.875 SXGA FHD model 1920*1080 66.587 59.93 138.625 WUXGA FHD model Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 84.75 WXGA HDCP 1280*1024 63.981 60.02 108.00 SXGA HDCP / FHD Model 1920*1080 67.5 148.5 WUXGA HDCP / FHD Model Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: Adjustment Instruction

    -> If you push “Power on” key, TV set will recover channel information by itself. (8) ……….OK 3. After function inspection, Push “In-stop” key. Copyright LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 * Required equipment : Adjustment R/C 32LV3500-DG_LGD 18272 19478 55337 26904 32LV3500-DG_AUO 18280 19478 55337 26904 42LV3400-DG_LGD 26592 9226 53289 26904 42LV3300-DG_AUO 9226 53289 26904 Copyright LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 For correct it to the model’s module from factory JIG model. # Push The “IN STOP KEY” after completing the function inspection. And Mechanical Power Switch must be set “ON”. Copyright LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 · Enter “START’ by pushing “OK” key. HDMI number is dependent on model. (2) FHD HDMI 1 EDID Data (CS : E299) Copyright LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 (6) SMALL FHD HDMI 1 EDID Data (CS : E24F) (7) SMALL FHD HDMI 2 EDID Data (CS : E23F) (12) HD HDMI3 EDID Data (CS : B445) Copyright LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 - If Test is failed, Buzzer operate - If Test is passed, GOOD Lamp on and move to next process automatically. Copyright LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...

  • Page 23: 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. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 IC102 NAND01GW3B2CN6E NAND FLASH MEMORY +3.3V_Normal +3.3V_Normal <CHIP Config(LED_R/BUZZ)> NC_1 NC_29 Boot from SPI CS1N(EXT_FLASH) 1’b0 NAND_FLASH_1G_NUMONYX NC_2 NC_28 EAN60762401 IC101 Boot from SPI_CS0N(INT_FLASH) 1’b1 PCM_A[0-7] LGE2112-T8 NC_3 NC_27 NC_4 NC_26 PCM_D[0-7] AR101 S7LR_DIVX_MS10 NC_5 I/O7 PCM_A[7] PCM_D[0] PCM_D[1] PCMDATA[0]/GPIO126 AA18 NC_6 I/O6...
  • Page 25 +3.3V_Normal MODEL OPTION PIN NAME PIN NO. HIGH MODEL OPTION +1.10V_VDDC +1.10V_VDDC VDDC 1.05V MODEL_OPT_0 VDDC : 2026mA MODEL_OPT_1 PHM_OFF PHM_ON MODEL_OPT_2 NON_DVB_T2 DVB_T2 MODEL_OPT_3 NON_3D R201 IF_AGC_SEL MODEL_OPT_0 R202 BOOSTER_OPT MODEL_OPT_4 LNA2_CTL MODEL_OPT_1 NON_OLED OLED R203 RF_SW_OPT RF_SWITCH_CTL MODEL_OPT_2 R204 MODEL_OPT_5 NON_DVB_S...
  • Page 26 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 27 CONTROL IR & LED +3.5V_ST EYEQ/TOUCH_KEY R2405 R2411 R2404 EYEQ/TOUCH_KEY OLD_SUB NEW_SUB SENSOR_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 SENSOR_SDA BLM18PG121SN1D 5.6V R2412 5.6V KEY2 C2409 D2404 AMOTECH 18pF C2401 C2402 0.1uF...
  • Page 28 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 0.1uF C1451 1/8W 1/8W 22uF +3.3V_Normal R1455 4.7K USB1_CTL USB_JACK 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 29 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 R806 AT24C02BN-SH-T SHIELD R896 $0.055 C806 R884 R888 Q802 R830 C802 HPD1 0.1uF 2.7K 2.7K 2SC3052 R804 0.1uF 1.8K DDC_SCL_1 R876 DDC_SDA_1 DDC_SDA_1 R875 DDC_SCL_1 R805 HDMI_ARC 5V_HDMI_2...
  • Page 30 RGB/SPDIF/PC/HP New Item Development EARPHONE BLOCK HP_LOUT C1118 002:V7 10uF C1115 HEAD_PHONE 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 002:V7 10uF C1116 1000pF Q1102 R1128 MMBT3904-(F) MMBT3904-(F) Q1103 R1129 3.3K SIDE_HP_MUTE Q1106 2SC3052 RGB PC +5V_Normal...
  • Page 31 RS232C R1123 JP1111 R1124 +3.5V_ST JP1112 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 PM_RXD DIN1 PM_TXD C1105 0.1uF DOUT2 DIN2 RIN2 ROUT2 EAN41348201 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 32 [51Pin LVDS Connector] (For FHD 60/120Hz) PANEL_VCC [30Pin LVDS Connector] (For HD 60Hz_Normal) L702 120-ohm WAFER_FHD P705 P703 FF10001-30 FI-RE51S-HF-J-R1500 WAFER_FHD C700 C709 C710 10uF 1000pF 0.1uF WAFER_FHD R713 RXA3- RXA3+ RXACK- RXACK+ RXA4- RXA2- RXA4+ RXA2+ RXA3- RXA3+ RXA1- LVDS_SEL RXA1+ RXACK-...
  • Page 33 AVDD_DDR0 AVDD_DDR0 AVDD_DDR1 AVDD_DDR1 DDR3 1.5V By CAP - Place these Caps near Memory AVDD_DDR1 +1.5V_DDR DDR3 1.5V By CAP - Place these Caps near Memory +1.5V_DDR AVDD_DDR0 L1203 L1202 BLM18PG121SN1D BLM18PG121SN1D A-MVREFDQ A-MVREFCA B-MVREFDQ B-MVREFCA C1252 10uF Close to DDR Power Pin Close to DDR Power Pin CLose to Saturn7M IC CLose to DDR3...
  • Page 34 +3.5V_ST +3.5V_ST S_FLASH_MAIN_MACRONIX IC1401 MX25L8006EM2I-12G +3.5V_ST 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 GP3_S7LR 20110324...
  • Page 35 GP4R_GLOBAL_TUNER_BLOCK +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 R3734 BOOSTER_OPT R3743 Q3701 BOOSTER_OPT ISA1530AC1 TU3702 TU3701 R3737 2.2K TDTJ-S001D TDFR-C036D +3.3V_TU +5V_TU BOOSTER_OPT DVB_1INPUT_H_LGIT CN_2INPUT_H_LG3911 R3745 BOOSTER_OPT Q3702 FE_BOOSTER_CTL 2SC3052 LNA2_CTL +3.3V_BUFFER +5V_BUFFER...
  • Page 36 +3.3V_Normal AMP_RESET R521 C516 1000pF L502 +24V_AMP BLM18PG121SN1D R507 AUD_MASTER_CLK +24V_AMP +24V C525 C519 C521 C523 0.01uF 0.1uF 0.1uF 10uF C515 C514 10uF 0.1uF L501 SPK_L+ MLB-201209-0120P-N2 D501 1N4148W R508 R515 L505 100V R516 10.0uH C537 0.1uF C510 C512 4.7K C501 C502 C530...
  • Page 37 Rear AV COMPONENT2 AV_CVBS_IN +3.3V_Normal REAR_AV C1643 C1648 D1619 47pF 220pF R1654 R1612 R1615 +3.3V_Normal REAR_AV REAR_AV COMP2_DET R1660 D1613 JK1604 5.6V REAR_AV PPJ233-01 AV_CVBS_DET R1666 [RD]E-LUG D1624 REAR_AV C1646 5.6V [GN]E-LUG [RD]O-SPRING 0.1uF R1619 REAR_AV [GN]O-SPRING [RD]CONTACT L-MONO COMP2_Y+ D1612 REAR_AV R1685...
  • Page 38 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 39 * 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] CI_MDI[7] +5V_Normal FE_TS_DATA[6] C1906 CI_MDI[6] FE_TS_DATA[5] 10uF CI_MDI[5] FE_TS_DATA[4] EAG41860102 CI_MDI[4] AR1906 P1901 FE_TS_DATA[3] CI_MDI[3] P1902 /CI_CD1 FE_TS_DATA[2] 10067972-000LF 10067972-050LF...
  • Page 40 6.5T_GAS 12.5T_GAS 9.5T_GAS 8.5T_GAS 7.5T_GAS 5.5T_GAS DO_NOT_APPLY MDS62110206 MDS62110209 MDS61887708 MDS62110214 MDS62110205 MDS62110204 GAS1-*6 GAS1-*5 GAS1-*4 GAS1-*3 GAS1-*2 GAS1-*1 6.5T_GAS 12.5T_GAS 9.5T_GAS 8.5T_GAS 7.5T_GAS 5.5T_GAS DO_NOT_APPLY MDS62110206 MDS62110209 MDS61887708 MDS62110214 MDS62110205 MDS62110204 GAS2-*6 GAS2-*5 GAS2-*4 GAS2-*3 GAS2-*2 GAS2-*1 6.5T_GAS 12.5T_GAS 9.5T_GAS 7.5T_GAS 8.5T_GAS...
  • Page 42 LVDS 출력 Block LVDS 출력 Block POWER Block POWER Block Trouble Shooting Trouble Shooting LG Electronics/ LCD TV Division LCD TV Gr. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 43 Digital Audio SPDIF NTP7100L (Optic) I2C(SCL/SDA) RS-232C RX/TX RX/TX MAX3232 Micom (CTRL./SVC) Reset Switch S/W Reset (UPD78F0514) DP/DM/ +5V 24MHz X-tal Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 44 COMP1_Pr RIN1P/M COMP1_Pb BIN1P/M RXCCKP CK+/-_HDMI4 RXCCKN D0+/-_HDMI4 RXC0P D1+/-_HDMI4 RXC0N RXC1P D2+/-_HDMI4 AV_CVBS_IN RXC1N CVBS0P CEC_REMOTE RXC2P SIDEAV_CVBS_I CVBS1P RXC2N Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 45 AUR1 & S7MR (LGE107) HP_ROUT Audio R SIDEAV_L_IN HP_LOUT Audio L AUL0 SIDEAV_R_IN AUR0 PC_L_IN +3.3V AUL4 PC_R_IN AUL5 SPDIF_OUT SPDIF_OUT Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 46 /PF_OE /PF_OE /PF_CE0 /PF_CE0 /PF_CE1 /PF_CE1 +3.3V PF_ALE PF_ALE +3.5V_ST /PF_WE /PF_WE PF WP SOC_RESET Micom HWRESET PF_AD15 (UPD78F0514) Reset Switch Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 47 22 ohm DDCA_DA IC1105 0ohm 0 ohm +5V_Gen. EEPROM EEPROM DDCDA_CK/DDCDC_CK 22 ohm (AT24C512BW) DDC_SCL/SDA AT24C02BN8 DDCDA_DA/DDCDC_DA 22 ohm IC1001 IC801/IC802/IC804 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 48 GPIO147/TCON4 & S7MR(LGE107) S7_RXD UART_RX2 RS232C R2619 S7_TXD (MAX3232CDR) UART_TX2 HP_DET R2618 GPIO 8/PM2 USB_DM USB_DM1 JK1450 USB_DP USB_DP1 (USB JACK) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 49 WIRELESS_DL_TX MPIF_CLK GPIO36/UART3_RX WIRELESS_DL_RX PM_SPI_DO/GPIO3 SPI_SDO GPIO151/TCON8 SIDEAV_DET PM_SPI_DI/GPIO2 SPI_SDI GPIO149/TCON6 5V_DET_HDMI_3 GPIO0/PM_SPI_CZ GPIO147/TCON4 5V_DET_HDMI_4 PM_SPI_CK/GPIO1 SPI_SCK GPIO145/TCON2 5V_DET_HDMI_2 GPIO143/TCON0 5V_DET_HDMI_1 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 50 AUDIO AMP AMP_MUTE ( NTP7100L) Micom (UPD78F0514) NEC_RXD RXD0 IC1002 RS232C R2619 NEC_TXD (MAX3232CDR) TXD0 R2618 KEY1 ANI6 KEY2 ANI7 INTP5 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 51 W I R E L E S S _ D E T E C T R E S E T M I C O M _ R E S E T Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 52 OUT Block LVDS TXB0+/- LVDS TXB1+/- P704(41pin) LVDS Wafer LVDS TXB2+/- (FHD, 120Hz) LVDS TXBC+/- 120Hz OPT LVDS TXB3+/- LVDS TXB4+/- Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 53 Main SOC S7(LGE101D) & S7 T(LGE105) IC407 +1.5V_DDR TPS54319 (DCDC)3A IC1, IC2 H5PS5162FFR-S6C DDR2 IC1101 MAX3232CDR (RS-232C) IC408 APX803D Power_DET (RESET IC) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 54 (#17,19,21) USB JACK (DCDC)3A (OPC) IC405 +3.3V_Normal AOZ1073AIL (DCDC)3A IC406 +5V_Normal AOZ1072AIL (DCDC)2A Q409 PANEL_VCC AO3407A P703/P705 (FET) IC408 Power_DET APX803D Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 55 IC501 NTP7100 IC404 +1.8V_AMP IC501 AZ1117H-1.8TRE1 NTP7100 TU6600 +3.3V_TU TDVJ-H001F L3703 Tuner IC402 +2.5V_Normal AZ2940D-2.5TRE1 IC100 Main SOC S7R(LGE101) & S7MR(LGE107) Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 56 +5V_Norm AOZ1072AI AT24C02BN L422 For HDMI (DCDC)2A EDID EEPROM IC1105 AT24C02BN For RGB PC EDID EEPROM TU3702 +5V_TU TDTR-T036F L3702 Tuner Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 57 Check Inverter Control & Error Out P404 18 pin : High Check Power Board or Module P404 *24 pin : low Change Module Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 58 Replace Tuner Check IF_P/N Signal Bad Tuner. Replace Tuner. TU5001 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 59 Replace Tuner Check Tuner No 11 pin Bad Tuner. Replace Tuner. (CVBS signal) 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 60 Y/PB/PR signal Line Check COMP_DET Signal Replace R1612 or R1615 or R1613,R1614 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 61 Check JK1104 Replace Jack H/V_Sync/R/G/B Signal Line 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 62 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 63 1, 2, 3, 4 pin. Replace connector Check Speaker cable if found to be damaged. Check speaker. Replace speaker if found to be damaged. Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 64 Replace Tuner Check IF_P/N Signal Bad Tuner. Replace Tuner. TU5001 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 65 Replace Tuner Check Tuner No 9 Bad Tuner. Replace Tuner. (SIF) Check Q3709 Replace Q3709 TR Replace the IC101 or main b;d Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 Check JK1102 & Audio 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...

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