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LG 42LE4300 Service Manual
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LG 42LE4300 Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LJ01D
MODEL : 42LE4300
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62886926 (1009-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LE46300-SA
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 42LE4300

  • 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 : LJ01D MODEL : 42LE4300 42LE46300-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62886926 (1009-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 BLOCK DIAGRAM...................14 EXPLODED VIEW .................. 15 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 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

    120Hz 2,400,000 3,000,000 2.4ms LE6500 FHD 60Hz 1,600,000 2,000,000 CCFL LD460 FHD 60Hz 45,000 60,000 LD350 HD 60Hz 40,000 50,000 Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 Max Vertical Freq - 62 Hz Min Horiz. Freq - 30 kHz Max Horiz. Freq - 80 kHz Pixel Clock - 170 MHz Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 Max Vertical Freq - 62 Hz 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: Adjustment Instruction

    3) Click “Read” tab, and then load download file (XXXX.bin) by clicking “Read” 4) Click “Connect” tab. If “Can’t” is displayed, check connection between computer, jig, and set. Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 4) RGB (PC : 1024 x 768 @ 60hz) 5) HDMI 6) PC Audio In * Display and Sound check is executed by Remote control. Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 **: Month : Controlled / Data:00 R Gain ***:Year : Controlled G Gain ****:Check sum B Gain R Cut G Cut B Cut Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 DVI-D to HDMI or HDMI to HDMI Item Condition Data(Hex) Manufacturer ID 1E6D Version Digital : 1 Revision Digital : 3 Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 Confirm whether is normal or not when between power board’s ac block and GND is impacted on 1.5 kV(dc) or 2.2 kV(dc) for one second. Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Block Diagram

    BLOCK DIAGRAM Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: 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. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 BLOCK DIAGRAM Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 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 Boot from NOR flash : 1’b1 NC_4...
  • Page 18 NO_FRC : LOW +2.5V_Normal BLM18PG121SN1D MODEL_OPT_0 NO FRC U3_INTERNAL : HIGH LOW U3_EXTERNAL : HIGH HIGH L214 MODEL_OPT_4 PWIZ TCON with LG FRC : HIGH HIGH 100/120Hz LVDS 50/60Hz LVDS VDD33 BLM18PG121SN1D MODEL_OPT_1 MINI LVDS LVDS C4005 R201 IF_AGC_SEL MODEL_OPT_0 0.1uF...
  • Page 19 IC301-*1 H5TQ1G63BFR-H9C VCC1.5V_U3_DDR DDR3 1.5V By CAP - Place these Caps near Memory VCC1.5V_U3_DDR FRC_DDR_1333 +1.5V_FRC_DDR VREFCA L301 VREFDQ C324 C325 10uF 0.1uF Close to DDR Power Pin VDD_1 A10/AP VDD_2 VDD_3 A12/BC VDD_4 VDD_5 VCC1.5V_U3_DDR VCC1.5V_U3_DDR VDD_6 VDD_7 VDD_8 VDD_9 S7M_DIVX &...
  • Page 20 ST_3.5V--> 3.375V +12V/+15V 20V-->3.51V +24V +12V/+15V +3.5V_ST +3.5V_ST -> 3.375V FROM LIPS & POWER B/D PANEL_POWER 24V-->3.64V +3.5V_ST 12V-->3.58V R488 18.5V-->3.5V 100K IC408 NCP803SN293 C442 C438 C436 10uF R402 0.1uF New item POWER_DET 0.01uF RESET Q409 +3.5V_ST RT1P141C-T112 AO3407A Q402 C474 PANEL_VCC 0.1uF...
  • Page 21 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 NEC_ISP_Tx NEC_ISP_Rx R1047 1/16W OCD1A EDID_WP OCD1B Q1001 2SC3052 FLMD0 R1002 10K P60/SCL0 P140/PCL/INTP6 R1018 R1048 NEC_SCL RL_ON...
  • Page 22 CONTROL IR & LED +3.5V_ST EYEQ/TOUCH_KEY R2411 NEC_EEPROM_SCL P2401 R2405 12507WR-12L R2404 5.6B C2408 1000pF D2403 L2401 R2401 BLM18PG121SN1D KEY1 EYEQ/TOUCH_KEY L2402 R2402 D2402 NEC_EEPROM_SDA BLM18PG121SN1D 5.6V R2412 5.6B KEY2 C2409 AMOTECH D2404 1000pF C2401 C2402 0.1uF 0.1uF D2401 5.6V AMOTECH JP2407 +3.5V_ST...
  • Page 23 [LEVEL Shift Block] [POWER Block] D607 MMSD4148T1G VDD_LCM (+16V) 100V VCC_LCM CHECK Value!! (+3.3V) TCON_42_FHD_60_LAMP R635 R640 C628 C635 910K 470K C642 C653 R625 TCON_42_FHD_60_LAMP 0.1uF R650 22uF 9.1K C636 TCON_42_FHD_60_LAMP C638 1/8W R642-*1 C640 C629 R636 R641 47uF 1uF 50V C600 R600 NON_GIP...
  • Page 24 HDMI EEPROM 5V_HDMI_1 +5V_Normal ENKMC2838-T112 D821 HDMI_3 HDMI_1 5V_HDMI_1 5V_DET_HDMI_1 HDMI_1 IC801 EDID_WP 5V_HDMI_3 5V_DET_HDMI_3 AT24C02BN-10SU-1.8 SHIELD SHIELD R864 R830 Q804 Q802 HPD3 R896 HPD1 R894 2SC3052 2SC3052 $0.055 C806 R884 R888 $0.253 $0.253 C804 C802 0.1uF 4.7K 4.7K R804 0.1uF R838 0.1uF...
  • Page 25 COMMON AREA New Item Development EARPHONE BLOCK HP_LOUT EXCEPT_CHINA_HOTEL_OPT C1118 2:X19 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 2:X19 C1116 1000pF Q1102 R1128 MMBT3904-(F) MMBT3904-(F) SPK_R+_HOTEL Q1103 R1129 3.3K 2:X19 SIDE_HP_MUTE...
  • Page 26 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 R1156 0 DIN1 NEC_RXD C1105 0.1uF...
  • Page 27 (New Item Developmen H:9.2mm) SIDE_AV SIDE_AV_OPT 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 R3306 [RD]O-SPRING SIDEAV_L_IN SIDE_AV_OPT SIDE_AV_OPT SIDE_AV_OPT R3303...
  • Page 28 WIRELESS READY MODEL JK2601 KJA-PH-3-0168 Wireless power From wireless_I2C to micom I2C VCC[24V/20V/17V]_1 VCC[24V/20V/17V]_2 +3.3V_Normal R2602 VCC[24V/20V/17V]_3 WIRELESS_PWR_EN VCC[24V/20V/17V]_4 VCC[24V/20V/17V]_5 +24V VCC[24V/20V/17V]_6 +3.3V_Normal DETECT C2601 R2604 C2602 INTERRUPT 0.1uF TP2601 2.2uF GND_1 R2612 RESET TP2602 R2605 Q2602 R2617 GND_2 WIRELESS WIRELESS_DETECT AO3407A R2607...
  • Page 29 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 0.1uF C1451 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 CDS3C05HDMI1 5.6V 5.6V /RST_HUB TP1451 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 30 42_FHD_60_LAMP 42_FHD 32_FHD 37_FHD (Without 60Hz Lamp) R620-*1 R621-*1 R637-*1 R620-*2 R621-*2 R620-*3 R621-*3 R637-*3 R637-*2 SHEET7 220K 220K SHEET7 220K TCON_32_FHD TCON_32_FHD TCON_32_FHD TCON_37_FHD TCON_37_FHD TCON_37_FHD TCON_42_FHD TCON_42_FHD TCON_42_FHD R622-*2 R622-*1 R643-*1 R643-*2 R622-*3 R643-*3 270K 150K 150K TCON_32_FHD TCON_37_FHD TCON_42_FHD TCON_32_FHD...
  • Page 31 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 32 +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. GP2_Saturn7M FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Ver.
  • Page 33 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 +B2[1.2V] OPTION : BOOSTER +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 RF_SWITCH_CTL R5014 R5019 OPTION : RF AGC NTSC_2INPUT_H_LGIT C5002 BOOSTER_OPT...
  • Page 34 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 C2913 C2916 C2917 C2920 C2922 FE_TS_SYNC 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 +3.3V_DE FE_TS_DATA[0-7] FE_TS_DATA[0] FE_TS_DATA[0] (FE_TS_SERIAL) FE_TS_DATA[1] ISDB_DEMOD...
  • Page 35 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 ISDB_POWER 10uF NC_2 NC_3 C3005 C3006 0.1uF 0.1uF 0.1uF 22uF IF AGC SELECTION IF_AGC_ISDB TP3002 IF_AGC_SEL...
  • Page 36 +3.3V_Normal R3822 +3.3V_Normal R3827 R3802 COMP2_DET AV_CVBS_DET D3813 5.6V R3803 D3801 C3801 100pF SCART OPTION BLOCK 5.6V AV_R_IN R3824 SC1/COMP1_R_IN TP3801 SC1_FB SC1_CVBS_IN C3811 R3831 R3821 R3833 470K 1000pF TP3802 SC1_ID D3812 5.6V SC_RE1 TP3803 TP3804 SC_RE2 AV_L_IN R3823 TP3805 SCART1_MUTE SC1/COMP1_L_IN +3.3V_Normal...
  • Page 37 [51Pin LVDS Connector] (For FHD 60/120Hz) PANEL_VCC [Right FFC Connector] (60Pin Mini-LVDS) [LEFT FFC Connector] [41Pin LVDS Connector] [30Pin LVDS Connector] (60Pin Mini-LVDS) L702 (For FHD 120Hz) (For HD 60Hz_Normal) 120-ohm WAFER_FHD P701 P702 P703 P704 P705 104060-6017 104060-6017 TF05-51S TF05-41S FF10001-30 MINI_LVDS...
  • Page 38 +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 C540 0.01uF 1N4148W R519 R526 L507 100V AD-9060 R527 C536 R535 R531 0.1uF 4.7K C529 390pF SPEAKER_L C534 0.47uF C547 C521 R532 C515 C519 0.01uF 10uF...
  • Page 39 NOT USING B/T BT_ON/OFF BT_DM BT_DP BT_LOUT SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. GP2_Saturn7M Ver. 1.0 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON B/T THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 40 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] FE_TS_CLK /PCM_WAIT FE_TS_DATA[5] FE_TS_DATA[6] CI_TS_CLK CI_TS_VAL FE_TS_DATA[7] CI_TS_SYNC FE_TS_DATA[0-7] PCM_D[0] PCM_D[1] CI_TS_DATA[0] PCM_D[2] PCM_A[0] PCM_D[3] CI_TS_DATA[1] PCM_A[1] CI_TS_DATA[2] PCM_A[2] CI_TS_DATA[3] PCM_A[3] PCM_D[4] CI_TS_DATA[4]...
  • Page 41 NON ETHERNET TP2101 EPHY_RXD0 TP2102 EPHY_RXD1 EPHY_TXD1 TP2103 EPHY_TXD0 TP2104 EPHY_REFCLK TP2105 TP2106 EPHY_CRS_DV EPHY_MDIO TP2107 TP2108 ET_RXER /RST_PHY TP2109 EPHY_MDC TP2110 EPHY_EN TP2111 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. GP2_Saturn7M Ver. 1.0 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON ETHERNET...
  • Page 42 NON Motion Remocon Region TP2501 M_REMOTE_RX TP2502 M_REMOTE_TX RF_RESET TP2503 RF_ENABLE TP2504 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. GP2_Saturn7M Ver. 1.0 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON M REMOCON THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 43 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. GP2_Saturn7M Ver. 1.0 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON CHINA HOTEL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
  • Page 44 /PIF_SPI_CS R6001 CHB_CVBS_IN 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. 1.0 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

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42le46300-sa