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LG 26LV2500-DA Service Manual
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LG 26LV2500-DA Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LT01T
MODEL : 26LV2500
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL66989901 (1104-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
26LV2500-DA
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 26LV2500-DA

  • 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 : LT01T MODEL : 26LV2500 26LV2500-DA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL66989901 (1104-REV00) Printed in Korea...
  • Page 2 CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 EXPLODED VIEW .................. 16 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 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 Temp. : 0 deg ~ 40 deg Humidity : 0 ~ 85 % Input Voltage AC 100-240 V~ 50 / 60 Hz Power Consumption 26” Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 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. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 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. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 -> 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. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 37LV3500-DA_AUO 22376 19478 55337 26904 32LV3500-DA_LGD 18272 19478 55337 26904 32LV3500-DA_AUO 18280 19478 55337 26904 42LV3400-DA_LGD 26592 9226 53289 26904 Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 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. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 · 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. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 - 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. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 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 16 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 17 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 18 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 19 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 20 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 21 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 22 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 23 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 24 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 25 [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 26 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 27 +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 28 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 29 +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 30 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 31 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 32 * 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 33 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 34 +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 35 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 37 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 38 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 39 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 40 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 41 /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 42 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 43 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 44 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 45 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 46 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 47 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 48 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 49 (#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 50 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 51 +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 52 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 53 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 54 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 55 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 56 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 57 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 58 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 59 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 60 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 61 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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26lv2500