LG 42LV375H Скачать руководство пользователя страница 1

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LED LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LD03X

MODEL : 42LV375H

42LV375H-ZA

North/Latin America

http://aic.lgservice.com

Europe/Africa

http://eic.lgservice.com

Asia/Oceania

http://biz.lgservice.com

Internal Use Only

Printed in Korea

P/NO : MFL63263134 (1105-REV00)

Содержание 42LV375H

Страница 1: ... READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD03X MODEL 42LV375H 42LV375H ZA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL63263134 1105 REV00 ...

Страница 2: ...LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 7 TROUBLE SHOOTING GUIDE 14 BLOCK DIAGRAM 20 EXPLODED VIEW 21 SCHEMATIC CIRCUIT DIAGRAM ...

Страница 3: ...Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path t...

Страница 4: ...ification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 Module General Specification No Item Specification Remark 1 Display Screen Device 107 cm 42 inch wide color display module 2 Aspect Ratio 16 9 3 LCD...

Страница 5: ...0 4 CIE Color Coordinates White Wx 0 279 Wy 0 292 RED Rx 0 637 Ry Typ 0 341 Typ Green Gx 0 03 0 325 0 03 Gy 0 600 Blue Bx 0 152 By 0 051 6 Component Video Input Y CB PB CR PR No Specification Remark Resolution H freq kHz V freq Hz 1 720x480 15 73 60 00 SDTV DVD 480i 2 720x480 15 63 59 94 SDTV DVD 480i 3 720x480 31 47 59 94 480p 4 720x480 31 50 60 00 480p 5 720x576 15 625 50 00 SDTV DVD 625 Line 6 ...

Страница 6: ...00 31 468 70 08 28 321 HDCP 2 640 480 31 469 59 94 25 17 VESA HDCP 3 800 600 37 879 60 31 40 00 VESA HDCP 4 1024 768 48 363 60 00 65 00 VESA XGA HDCP 5 1280 768 47 78 59 87 79 5 WXGA HDCP 6 1360 768 47 72 59 8 84 75 WXGA HDCP 7 1280 1024 63 595 60 0 108 875 SXGA HDCP FHD model 8 1920 1080 67 5 60 00 138 625 WUXGA HDCP FHD model 2 PC Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed ...

Страница 7: ... ADC Adjustment 1 Overview ADC adjustment is needed to find the optimum black level and gain in Analog to Digital device and to compensate RGB deviation 2 Equipment Condition 1 Jig RS 232C protocol 2 MSPG 925 Series Pattern Generator MSPG 925FA pattern 65 Resolution 480i Comp1 1080p Comp1 1080p RGB Pattern Horizontal 100 Color Bar Pattern Pattern level 0 7 0 1 Vp p Image 3 Adjustment 1 Adjustment ...

Страница 8: ...er LAN Port Jack 3 Play Test F9 button and confirm OK Message 4 Remove LAN cable 3 5 Model name serial number download 1 Model name Serial number D L A Press Power on key of service remote control Baud rate 115200 bps A Connect RS232 Signal Cable to RS 232 Jack A Write Serial number by use RS 232 A Must check the serial number at Instart menu 2 Method notice A Serial number D L is using of scan eq...

Страница 9: ...dition Jig commercial check JIG Special 232C Cable for commercial check Jig Power only mode 4 2 2 Check the power out IR out commercial check jig 1 Connect each other RS232C port on the Commercial Check JIG 2 Press RED Color key on Service remote control 3 Check the LED of jig board 12V 5V LED OK condition Turn On IR LED OK condition blinking 4 2 3 Check the power out IR out mini jig 1 Connect min...

Страница 10: ...of user input It is a realization of Plug and Play 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjustment remote control 3 Download method 1 Press ADJ key on the Adjustment remote control 2 Select EDID D L menu 3 By pressing Enter key EDID download will begin 4 If Download is successful OK is display but If Download is failure NG is displa...

Страница 11: ...ance auto adj wb 00 10 Gain adj ja 00 ff Adj data jb 00 c0 wb 00 1f Gain adj completed wb 00 20 Start wb 00 2f completed Off set adj wb 00 ff End white balance auto adj A Adj Map 5 3 5 Adj method 1 Auto adj method 1 Set TV in adj mode using POWER ON key 2 Zero calibrate probe then place it on the center of the Display 3 Connect Cable RS 232C 4 Select mode in adj Program and begin adjustment 5 When...

Страница 12: ...able in process of time Only LGD module CA210 CH 14 Test signal Inner pattern 80 IRE 5 4 HDCP High bandwidth Digital Contents Protection SETTING HDCP setting is not necessary in BCM model 5 5 EYE Q function check Step 1 Turn on TV Step 2 Press EYE key of Adjustment remote control Step 3 Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds Step 4 Confirm that R G B v...

Страница 13: ... RF input Mono 1 KHz sine wave signal 100 Modulation 2 CVBS Component 1 KHz sine wave signal 0 4 Vrms 3 RGB PC 1 KHz sine wave signal 0 7 Vrms 8 USB S W Download option Service only 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatical...

Страница 14: ...1 Clock 10 MHz Check X903 Clock 54 MHz Check X701 X903 application circuit or Replace X701 X903 N Y Check IC703 UART communication 44 45 pin Check UART line or replace IC703 N Y Check IR input state of IC703 13 pin Check IR board N Y Re download NEC MICOM Y 2 No OSD Trouble Shooting guide Check P1501 All Voltage Level 3 5 V 12 V 20 V Check power connector and RL_ON signal N Check Q1504 output Volt...

Страница 15: ...at C110 or R2112 because it s more easy to check Can you see the normal waveform Y This board has big problem because Main chip BCM3556 have some troubles After checking thoroughly all path once again You should decide to replace BCM3556 or not Y You should replace TUNER Y 4 Digital RF Trouble Shooting guide Check RF Cable MPI to TU2701 RF Cable You should replace Cable N Check TU2701 power Pin 16...

Страница 16: ...e AV cable N Check the LVDS cable Connect the cable N Y Replace IC100 Y 6 Component RGB Video Trouble Shooting guide Component input RGB input Is Video input normal JK900 Green Blue Red Check the input source component cable N Check the input of BCM3556 IC100 C130 C131 C132 Check the register Bead L904 L903 L902 etc N Y Replace IC100 Y Is Video input normal JK905 Pin 1 2 3 Check the input source R...

Страница 17: ... N Check DDC communication line JK800 Pin 16 17 Check the EDID data N Check 5V_HDMI HPD line Check the HDMI Cable N Y Replace IC100 Y Y HDMI 2 Is Video input normal JK802 Check the input source HDMI cable N Check DDC communication line JK802 Pin 16 17 Check the EDID data N Check Switch IC IC800 output signal Replace IC800 N Check 5V_HDMI HPD line Check the HDMI Cable N Y Y Check the IIC line IC800...

Страница 18: ...Download the EDID data Y Check the Tuner in out Y Y IC501 operate normal Replace IC501 N Y IC100 operate normal Replace IC100 N Y Replace main board Y Set on speaker on menu 9 External Speaker out Trouble Shooting guide Check the input source Check the input source N N IC502 operate normal Check the mute Line or Replace IC502 N Is the External speaker setting Fixed or Ext Int variable on Installat...

Страница 19: ... Replace Q1506 part N Y Replace Main board Y 11 Commercial Function Trouble Shooting guide Front Clock Check the Clock display setting Yes on Installation menu Set Yes on Installation menu N Check the Time setting on user menu Set Time Clock on user menu N Y Y Is the clock cable normal Y IR Out Check the IR Waveform of Q2401 Q2402 Replace Q2401 Q2402 N Replace IC702 N Check the clock cable N Check...

Страница 20: ...E_TS_Parallel CI AMP Speaker NVRAM PKT0 PKT1 RMX0 EXT Speaker Digital Tun er DVB T C NIM DDR2 1Gb x 4 NAND Flash 4Gb RGB SCART COMP COMP L R SPIDIF Headphone LPF D Class Amp HDMI2 HDMI1 TVLink MAX3232 NEC SUB MICOM UART Pro Idiom TP_INPUT Decrypted TP HDMI SWITCH HDMI2 EXT Vol Ctrl Modu le LVDS 51pin USB CLOCK Display Commercial Feature Block Ethernet Ethernet SWITCH ...

Страница 21: ...ny electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of man...

Страница 22: ...CLK_IN G27 EBI_CLK_OUT G28 EBI_RWB K23 EBI_CS0B G25 NAND_DATA0 U24 NAND_DATA1 T26 NAND_DATA2 T27 NAND_DATA3 U26 NAND_DATA4 U27 NAND_DATA5 V26 NAND_DATA6 V27 NAND_DATA7 V28 NAND_CS0B T24 NAND_ALE R23 NAND_REB T23 NAND_CLE T25 NAND_WEB R24 NAND_RBB U25 SF_MISO W24 SF_MOSI U23 SF_SCK V23 SF_CSB V24 100 R1048 1 8K R115 ETHUB_MDC_BCM ETHUB_MDIO_BCM M24M01 HRMN6TP IC102 3 E2 2 E1 4 VSS 1 NC 5 SDA 6 SCL ...

Страница 23: ..._AVDD3P3 R4 USB_RREF U4 USB_DM1 V1 USB_DP1 V2 USB_DM2 U1 USB_DP2 U2 USB_MONCDR T5 USB_MONPLL R5 USB_PWRFLT_1 R1 USB_PWRFLT_2 R2 USB_PWRON_1 T2 USB_PWRON_2 T1 EPHY_VREF P6 EPHY_RDAC P5 EPHY_RDN P3 EPHY_RDP P2 EPHY_TDN N3 EPHY_TDP N2 EPHY_AVDD1P2 P1 EPHY_AVDD2P5 P4 EPHY_PLL_VDD1P2 N4 EPHY_AGND_1 N1 EPHY_AGND_2 N5 EPHY_AGND_3 P7 AUDMX_LEFT1 AE6 AUDMX_RIGHT1 AD7 AUDMX_INCM1 AF6 AUDMX_LEFT2 AH4 AUDMX_R...

Страница 24: ...10 SD_INCM_CVBS3 AH12 SD_INCM_CVBS4 AG13 SD_SIF1 AF17 SD_INCM_SIF1 AG17 SD_FB AD15 SD_FS AE16 SD_FS2 AE17 PLL_VAFE_AVDD1P2 AB16 PLL_VAFE_AVSS AA15 PLL_VAFE_TESTOUT AC16 RGB_HSYNC AG3 RGB_VSYNC AF4 I2S_CLK_IN AE18 I2S_CLK_OUT AF18 I2S_DATA_IN AD17 I2S_DATA_OUT AH19 I2S_LR_IN AD18 I2S_LR_OUT AG18 AUD_LEFT0_N AG26 AUD_LEFT0_P AH26 AUD_AVDD2P5_0 AF23 AUD_AVSS_0_1 AA20 AUD_AVSS_0_2 AB21 AUD_AVSS_0_3 AC...

Страница 25: ...DDR_BVDD1 A24 DDR_BVSS0 B7 DDR_BVSS1 B24 DDR_PLL_TEST F20 DDR_PLL_LDO B23 DDR01_CKE B17 DDR_COMP C22 DDR01_ODT E16 DDR_EXT_CLK C23 DDR0_CLK B12 DDR0_CLKB C12 DDR1_CLK A13 DDR1_CLKB A12 DDR01_A00 B15 DDR01_A01 E14 DDR01_A02 A15 DDR01_A03 D15 DDR0_A04 E13 DDR0_A05 E12 DDR0_A06 F13 DDR01_A07 C14 DDR01_A08 F14 DDR01_A09 B14 DDR01_A10 D14 DDR01_A11 C13 DDR01_A12 D13 DDR01_A13 B13 DDR1_A04 F15 DDR1_A05 ...

Страница 26: ... 013 AM23 5 6V D4702 5 6V D4701 510 R4700 5 6V D4704 CIC21J501NE L4701 100 R2432 100 R2433 SCL1_3 3V SDA1_3 3V EPHY_RXIP1 EPHY_RXIN1 A1 8_ETHUB 4 9 9 1 R4706 4 9 9 1 R4707 0 1uF C4702 4 9 9 1 R4708 4 9 9 1 R4709 0 1uF C4703 0 1uF 16V C4701 0 1uF 16V C4700 XRJV 01V D12 180 JK4701 1 2 3 4 5 6 7 8 D1 D2 D3 D4 9 CIC21J501NE L4702 0 1uF 16V C4712 4 9 9 1 R4714 4 9 9 1 R4715 5 6V D4710 4 9 9 1 R4716 4 9...

Страница 27: ...BUZ0 INTP6 81 P120 INTP0 EXLVI 82 P47 INTP2 83 P46 INTP1 TI05 TO05 84 P45 SO01 85 P 4 4 S I 0 1 86 P43 SCK01 87 P42 TI04 TO04 88 P41 TOOL1 89 P40 TOOL0 90 RESET 91 P124 XT2 92 P123 XT1 93 FLMD0 94 P122 X2 EXCLK 95 P121 X1 96 REGC 97 VSS 98 EVSS0 99 VDD 100 EVDD0 4 7K R771 CEC_REMOTE 22 R752 3 5V_ST I2C_SW 13pF C707 10K R706 3 5V_ST 0 1uF 16V C703 NEC_TXD_DBG IR_OUT_CTRL IR_OUT_HDMI2 EXT_PWR_DET 22...

Страница 28: ... 0 R844 0 R845 D825 3 5V_ST CEC CEC_REMOTE IR_OUT_HDMI1 IR_OUT_HDMI2 KRC104S Q801 E B C KRC104S Q802 E B C 1K R800 5 5V D801 OPT 5 5V OPT D802 4 7K R801 5V_HPD_1 KRC104S Q804 E B C 1K R802 KRC104S Q803 E B C 5 5V OPT D803 5 5V OPT D804 4 7K R812 HDMI_HPD_2 5V_HPD_2 5V_HDMI_2 ENKMC2838 T112 D4706 A1 C A2 ENKMC2838 T112 D4707 A1 C A2 5V_NORMAL 5V_HPD_2 5V_NORMAL BSS83 Q800 S B D G 5V_NORMAL 0 R856 O...

Страница 29: ... O SPRING_2 6E RD E LUG COMP2_Pr COMP2_DET 5 6V D902 5 6V D900 5 6V D901 470K R908 COMP2_R_IN 3 3V_NORMAL COMP2_L_IN COMP2_Pb COMP2_Y 10K R902 1K R903 0 L906 1 RGB_0OHM 0 L907 1 RGB_0OHM 0 L905 1 RGB_0OHM 0 OPT R954 1K R956 10K R955 0 R952 0 R945 22pF 50V OPT C923 22pF 50V OPT C924 22 R933 22 R934 0 1uF C921 0 1 u F 16V C925 18pF50V C928 18pF 50V C929 22 R944 22 R942 100 R953 10K R951 ADUC30S03010...

Страница 30: ...SB3157DFT2G EAN38256201 ANALOGSWITCH IC1108 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VCC UART_SW2 ONSEMICONDUCTOR NLASB3157DFT2G EAN38256201 ANALOGSWITCH IC1109 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VCC 3 5V_ST 0 1uF C1103 ONSEMICONDUCTOR NLASB3157DFT2G EAN38256201 ANALOGSWITCH IC1110 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VCC ONSEMICONDUCTOR NLASB3157DFT2G EAN38256201 ANALOGSWITCH IC1111 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VC...

Страница 31: ...AGND_1 5 TXOP 0 6 TXON 0 7 AVDD18_2 8 AVDD18_3 9 TXON 1 10 TXOP 1 11 AGND_2 12 RXIP 1 13 RXIN 1 14 AVDD18_4 15 AVDD18_5 16 RXIN 2 17 RXIP 2 18 AGND_3 19 TXOP 2 20 TXON 2 21 AVDD18_6 22 AVDD18_7 23 TXON 3 24 TXOP 3 25 AGND_4 26 RXIP 3 27 RXIN 3 28 AVDD18_8 29 AVDD18_9 30 RXIN 4 31 RXIP 4 32 AGND_5 33 TXOP 4 34 TXON 4 35 AVDD18_10 36 ITEST1 37 ITEST2 38 ITEST3 39 DGND_1 40 RESET 41 ITEST4 42 DISDUAL...

Страница 32: ...2 3 5V 7 GND 2 24V 16 GND V sync 11 3 5V 6 GND 1 PWRON 20 A DIM 15 GND 10 3 5V 5 GND 21 12V 22 P DIM1 23 GND P DIM2 24 Err OUT 25 1K R1523 THERMAL MP2208DL LF Z IC1503 3 PGND_1 2 SS 4 SW_1 1 AGND 6 NC 5 IN_1 7 BS 8 VCC 9 POK 10 IN_2 11 SW_2 12 PGND_2 13 EN SYNC 14 FB 15 EP 10 R1572 0 1uF 16V C1537 0 1uF 16V C1570 0 1uF 16V C1571 22uF 16V C1572 470K 1 R1569 910K 1 R1576 0 R1536 0 OHM 5 6V ESD D1501...

Страница 33: ...A_DEMOD 7 SDA A_DEMOD 8 NC IF_TP 9 SIF 10 NC 11 VIDEO 12 GND 13 1 2V 14 3 3V 15 RESET 16 2 5V 17 SCL D_DEMOD 18 SDA D_DEMOD 19 ERR 20 SYNC 21 VALID 22 MCL 23 D0 24 D1 25 D2 26 D3 27 D4 28 D5 29 D6 30 D7 31 SHIELD TDFR G155D TU2701 1 VERTICAL_NIM 1 RF_S W_CNTL 2 BST_CNTL 3 B1 5V 4 NC RF_AGC 5 AS 6 SCL A_DEMOD 7 SDA A_DEMOD 8 NC IF_TP 9 SIF 10 NC 11 VIDEO 12 GND 13 1 2V 14 3 3V 15 RESET 16 2 5V 17 S...

Страница 34: ... C7 IO2_31 TP_DATA 5 C8 IO2_25 TP_DATA 4 C9 IO2_23 TP_DATA 3 C10 IO2_18 TP_DATA 2 C11 IO2_14 TP_DATA 1 C12 IO2_8 TP_DATA 0 M1 IO1_29 C3 IO1_2 C2 IO1_3 B1 IO1_4 G5 IO1_5 F4 IO1_6 D3 IO1_7 E4 IO1_8 F5 IO1_9 E3 IO1_10 D2 IO1_11 E2 IO1_12 G1 CLK0 B2 IO2_48 RESET D14 IO3_37 I2C_SCK E14 IO3_34 I2C_SDA K4 DCLK K13 CONF_DONE H3 NCONFIG J4 NCE H2 DATA0 G4 IO1_21SO K3 IO1_22 ASDO H4 NCEO J13 NSTATUS J3 MSEL...

Страница 35: ...EL_LOW R3543 3 3V_NORMAL 3 3K LVDS_SEL_HIGH R3542 120 ohm WAFER_HD L3503 PANEL_VCC LVDS_TX_0_CLK_N SCAN_BLK1 OPC_OUT LVDS_TX_0_CLK_P LVDS_TX_0_DATA0_N 0 OPT R3561 LVDS_TX_0_DATA2_N PWM_DIM FF10001 30 WAFER_HD P3500 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 LVDS_TX_0_DATA3_P 0 WAFER_HD R3560 LVDS_TX_0_DATA1_P LVDS_TX_0_DATA0_P 10K LVDS_SEL_LOW R3500 OPC_EN ...

Страница 36: ...61 EXT_OUT_L EXT_OUT_R 1uF 10V OPT C575 1uF 10V OPT C572 EXT_LOUT_P 100 R543 EXT_ROUT_N 68K R512 EXT_LOUT_N 1K 1 R541 68K R511 1K 1 R542 68K R516 10uF C553 EXT_L_AMP 68K R510 10uF C554 KA4558D IC500 3 IN1 2 I N 1 4 VEE 1 OUT1 5 IN2 6 I N 2 7 OUT2 8 VCC EXT_ROUT_P EXT_R_AMP MLB 201209 0120P N2 L3800 24V 24V_AMP THERMAL NTP 7000 EAN60969601 IC501 NTP7000 1 BST1A 2 VDR1A 3 RESET 4 AD 5 DGND_1 6 GND_I...

Страница 37: ...324D IC4100 3 IN1 2 IN1 4 VCC 1 OUT1 6 IN2 5 IN2 7 OUT2 8 OUT3 9 IN3 10 IN3 11 VEE GND 12 IN4 13 IN4 14 OUT4 DTV MNT_V_OUT SCART1_DET 6800pF 50V C4125 6800pF 50V C4126 10K R4126 1K R4129 0 R4123 75 R4112 75 1 R4104 75 1 R4102 75 1 R4101 470K R4100 470K R4103 1 16W 0 5 R4107 1 16W 0 5 R4105 0 R4108 22 R4122 75 R4111 220pF 50V OPT C4115 0 1uF 16V C4116 0 1uF 16V C4119 0 1uF 16V C4118 0 R4131 OPT 1K ...

Страница 38: ...AIT 10K R4516 CI_CE2 33 AR4509 CI_VS1 CI_IREQ 10K OPT R4519 EBI_RW 10K R4503 22K R4518 33 AR4519 CI_IOWR CI_CD1 33 AR4512 NAND_REb 0 1 u F 16V C4507 CI_IOIS16 CI_IORD 10K R4521 CI_CE2 CI_CE1 10K R4522 CI_INPACK 0 1 u F 16V C4500 EBI_WE 10K R4515 10K OPT R4523 10K AR4504 33 AR4513 CI_SEL CI_CE2 CI_OUTCLK CI_OUTDATA 0 7 CI_OUTSTART CI_OUTVALID CI_CE1 EBI_CS 5V_NORMAL D3 3V 33 AR4506 CI_D 0 7 FE_TS_S...

Страница 39: ......

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