LG 55LV355H Page 39 Service Manual Download | Manualshive

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background image

Normal

voltage?

Check various
voltages of Power
Board
( 3.5V,12V,20V or
24V…)

No Video/
No audio

Check and
replace
MAIN B/D

Y

Replace Power
Board and repair
parts

N

End

Standard Repair Process

A. Video error

No video/ No audio

☞

A4

Established

date

Revised date

2/13

LCD TV

Error

symptom

2

Copyright © 2011 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LGE Internal Use Only

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Summary of Contents for 55LV355H

Page 1: ...EAD THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LB0AZ MODEL 55LV355H 55LV355H TA 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 MFL67223412 1108 REV00 ...

Page 2: ...right 2011 LG Electronics Inc All rights reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 BLOCK DIAGRAM 14 EXPLODED VIEW 15 SHEMATIC CIRCUIT DIAGRAM ...

Page 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...

Page 4: ... on your body by touching a known earth ground 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 unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge...

Page 5: ... the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the repla...

Page 6: ... 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 No Item Specification Remarks 1 Market Austrailia NewZealand Singapore Malaysia only Analog for A ASIA Vietnam Indonesia South Africa Israel A ASIA 2 Broadcasting system 1 PAL SECAM B G D K PAL for NZ SG 2 PAL I II 3 NTSC M 4 DVB T 3 Receiving syste...

Page 7: ...1280x720 45 00 60 00 HDTV 720p 10 1920x1080 31 25 50 00 HDTV 1080i 11 1920x1080 33 75 60 00 HDTV 1080i 12 1920x1080 33 72 59 94 HDTV 1080i 13 1920x1080 56 250 50 HDTV 1080p 14 1920x1080 67 5 60 HDTV 1080p No Specification Proposed Remark Resolution H freq kHz V freq Hz Pixel Clock MHz 1 720 400 31 468 70 08 28 321 For only DOS mode 2 640 480 31 469 59 94 25 17 VESA Input 848 480 60 Hz 852 480 60 H...

Page 8: ...08 875 SXGA HDCP FHD model 7 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 Remark 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 2 720 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV 1080I 6 1920 1080 28 ...

Page 9: ... check OK message If Error is displayed Check connection between computer jig and set 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 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detec...

Page 10: ...ce aa 00 00 Enter Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Required equipment Adjustment remote control 3 2 Function Check Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV SCART1 SCART2 CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 60hz 5 HDMI 6 PC Audio In ...

Page 11: ...ug the AC cable If it is not same then correct it same with BOM and unplug AC cable 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 4 2 DDC EDID Write RGB 128Byte Connect D sub Signal Cable to D sub Jack Write EDID Data to EEPROM 24C02 by using DDC2B protocol Check whether written E...

Page 12: ...2D 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 0 ff ff ff ff ff ff 0 1e 6d a b 10 c 1 3 68 10 9 78 0a ee 91 a3 54 4c 99 26 20 0f 50 54 a1 8 0 81 80 61 40 45 40 31 40 1 1 30 1 1 1 1 1 1 2 3a 80 18 71 38 2d 40 58 2c 40 45 0 a0 5a 0 0 0 1e 1 1d 0 72 51 d0 1e 20 50 6e 28 55 0 a0 5a 0 0 0 1e 0 0 0 fd 0 3a 60 3e 1e 53 10 0 0a 20 20 20 20 20 20 d 70 d 0 e 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 0 ff ff ff ff ff ff 0 1e ...

Page 13: ...ethod notice A Serial number D L is using of scan equipment B Setting of scan equipment operated by Manufacturing Technology Group C Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded by OTA or Service man sometimes model name or serial number is ini...

Page 14: ...ar TMDS DDR2 Add DDR2 Data SPI MICOM UPD78F0514AGA GAM AX MICOM SDA MICOM SCL AV Side NAND Flash 2Gbit HY27UF082G2B TPCB PCM_A 0 7 DDR3 256M Hynic H5TQ1G63BFR FFC 31P HD 50 60Hz TMDS HDMI CVBS L R DDR3 256M Hynic H5TQ1G63BFR DDR3 256M Hynic H5TQ1G63BFR CONTROL IR LED SOFT TOUCH NEC_EEPROM _SCL SDA LED_R BUZZ KEY1 KEY2 IR LED_B LG LOGO SOFT TOUCH _SCL SDA M24M01 HRMN6TP 1Mbit HDCP EEPROM CAT24WC08W...

Page 15: ...al 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 manufacturer I...

Page 16: ...MR DIVX IC101 8 S7MR_DivX FRC_DDR3_A0 DDR2_NC AE1 FRC_DDR3_A1 DDR2_A6 AF16 FRC_DDR3_A2 DDR2_A7 AF1 FRC_DDR3_A3 DDR2_A1 AE3 FRC_DDR3_A4 DDR2_CASZ AD14 FRC_DDR3_A5 DDR2_A10 AD3 FRC_DDR3_A6 DDR2_A0 AF15 FRC_DDR3_A7 DDR2_A5 AF2 FRC_DDR3_A8 DDR2_A2 AE15 FRC_DDR3_A9 DDR2_A9 AD2 FRC_DDR3_A10 DDR2_A11 AD16 FRC_DDR3_A11 DDR2_A4 AD15 FRC_DDR3_A12 DDR2_A8 AE16 FRC_DDR3_BA0 DDR2_BA2 AF3 FRC_DDR3_BA1 DDR2_ODT ...

Page 17: ...B GPIO20 D5 C_RXCP AA2 C_RXCN AA1 C_RX0P AB1 C_RX0N AA3 C_RX1P AB3 C_RX1N AB2 C_RX2P AC2 C_RX2N AC1 DDCDC_DA GPIO28 AB4 DDCDC_CK GPIO27 AA4 HOTPLUGC GPIO21 AC3 D_RXCP A2 D_RXCN A3 D_RX0P B3 D_RX0N A1 D_RX1P B1 D_RX1N B2 D_RX2P C2 D_RX2N C3 DDCDD_DA GPIO30 B4 DDCDD_CK GPIO29 C4 HOTPLUGD GPIO22 E5 CEC GPIO5 D6 HSYNC0 G5 VSYNC0 G6 RIN0P K1 RIN0M L3 GIN0P K3 GIN0M K2 BIN0P J3 BIN0M J2 SOGIN0 J1 HSYNC1...

Page 18: ...P RLV0P RED 9 U26 A0M RLV0N RED 8 U25 A1P RLV1P RED 7 U24 A1M RLV1N RED 6 V26 A2P RLV2P RED 5 V25 A2M RLV2N RED 4 V24 A3P RLV4P RED 1 W24 A3M RLV4N RED 0 Y26 A4P RLV5P GREEN 9 Y25 A4M RLV5N GREEN 8 Y24 BCKP TCON13 GREEN 1 AC26 BCKM TCON12 GREEN 0 AC25 B0P RLV6P GREEN 7 AA26 B0M RLV6N GREEN 6 AA25 B1P RLV7P GREEN 5 AA24 B1M RLV7N GREEN 4 AB26 B2P RLV8P GREEN 3 AB25 B2M RLV8N GREEN 2 AB24 B3P TCON11...

Page 19: ...V_CTL R425 0 POWER_22_PWM_DIM R471 68uF 35V C426 100 R402 0 01uF 25V C436 0 01uF NR8040T3R6N 3 6uH L406 0 POWER_16_GND R412 12V 15V 0 1uF 16V C424 47K R429 0 1uF 16V C485 AZ2940D 2 5TRE1 IC402 2 GND 3 VOUT 1 VIN 1 8W 75K 1 R441 2SC3052 Q405 E B C 10K OPT R430 1 26V_VDDC 0 1uF 50V C418 22K R435 NR8040T3R6N 3 6uH L421 10K 1 R423 6 8K OPT R418 0 1uF 16V C447 AOZ1073AIL 3 IC405 3 AGND 2 VIN 4 FB 1 PGN...

Page 20: ...20 RXD2 SDA20 78 P142 SCK20 SCL20 79 P141 PCLBUZ1 INTP7 80 P140 PCLBUZ0 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 10K B L_LED R5009 4 7K R5045 1M R5055 2SA1504S Q5006 CLOCK E B C 10 R5...

Page 21: ...2403 10K 1 R2404 1 5K R2413 JP2408 1000pF 50V C2404 JP2411 AMOTECH 5 6V D2401 3 5V_ST 3 5V_ST BLM18PG121SN1D L2402 KEY2 LED_R BUZZ CDS3C05HDMI1 5 6V D903 NEW_SUB 18pF 50V OPT C907 0 R2427 OPT 3 5V_ST S T_SCL 100 R2401 S T_SDA 3 5V_ST 18pF 50V OPT C2408 0 1uF C2402 0 1uF 16V C2403 22 R2428 5 6V D2403 EYEQ TOUCH_KEY 5 6V D2404 EYEQ TOUCH_KEY 5 6V D2405 47K R2426 IR_OUT_RS232C 5V_ST 22 R36 2SC3052 Q2...

Page 22: ... 8W 2K 1 R1459 5V_USB USB1_CTL 1 8W 2K 1 R1458 4 7K OPT R1455 SIDE_USB_DM MLB 201209 0120P N2 120 ohm L1451 10K R1454 3 3V_Normal 47 R1451 CIS21J121 L1451 1 USB DOWN STREAM 3AU04S 305 ZC LG JK1450 USB_JACK 1 2 3 4 5 AP2191DSG EAN61849601 IC1450 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC USB DOWN STREAM 3AU04S 345 ZC H LG JK1450 1 USB_JACK_LV3400 1 2 3 4 5 RCLAMP0502B D1451 SIGN6409 0 077 ...

Page 23: ...CEC_REMOTE_NEC DDC_SCL_4 GND HDMI_CEC CK _HDMI4 JP806 68K R854 22 R875 3 3K R835 HPD1 HPD4 D0 _HDMI1 22 R878 HDMI_CEC D0 _HDMI2 1 8K R804 1K R897 0 1uF 16V C810 0 1uF 16V C801 D0 _HDMI4 AVRL161A1R1NT OPT D803 5V_HDMI_1 BSS83 Q806 S B D G 22 R876 0 1uF 16V C805 DDC_SDA_1 10K R893 AT24C02BN SH T IC804 HDMI_SIDE_ATMEL 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC EAG59023302 JK801 HDMI_2 14 13 5 D1_GND...

Page 24: ..._GND 9 NC 10 SYNC_GND 11 GND_2 12 DDC_DATA 13 H_SYNC 14 V_SYNC 15 DDC_CLOCK 16 SHILED 15K R1107 F i b e r O p t i c JST1223 001 JK1103 1 GND 2 VCC 3 VINPUT 4 FIX_POLE 3 3V_Normal 75 R1135 1K R1155 HEAD_PHONE HP_LOUT 2 U7 68pF 50V OPT C1126 10uF 16V C1119 HEAD_PHONE SPDIF_OUT 2 T18 30V D1109 0 1uF 16V C1129 PC_R_IN 2 S12 3 3K R1129 HEAD_PHONE 75 R1137 3 3V_Normal AMOTECH 5 6V OPT D1101 EDID_WP 1K R...

Page 25: ... POWER_OUT R63 2700pF 50V POWER_OUT C58 CB3216PA501E POWER_OUT L54 22uF 16V POWER_OUT C60 100K OPT R58 470pF 50V POWER_OUT C61 12V 15V 0 01uF 50V POWER_OUT C57 EXT5V_CTRL 0 1uF 50V POWER_OUT C65 22uF 25V PSU_POWER_OUT C52 1 16W 270K 1 PSU_POWER_OUT R56 3 3uF 50V PSU_POWER_OUT C54 MBRA340T3G PSU_POWER_OUT D50 1 8W 200K 1 PSU_POWER_OUT R53 150K PSU_POWER_OUT R51 0 1uF 50V PSU_POWER_OUT C55 150pF 50V...

Page 26: ..._DIM 10uF 16V OPT C700 RXD1 RXA0 RXC1 10K OPT R710 PWM_DIM RXBCK 0 1uF 16V C710 WAFER_FHD SCAN_BLK1 OPC_OUT RXA2 RXB2 RXD2 FF10001 30 P705 HD 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 RXD1 FI RE51S HF J R1500 P703 WAFER_FHD 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48...

Page 27: ..._A9 DDR2_A12 T26 B_DDR3_A10 DDR2_RASZ D24 B_DDR3_A11 DDR2_A11 A26 B_DDR3_A12 DDR2_A0 C25 B_DDR3_A13 DDR2_A7 T25 B_DDR3_BA0 DDR2_BA2 P24 B_DDR3_BA1 DDR2_CASZ C26 B_DDR3_BA2 DDR2_A5 R26 B_DDR3_MCLK DDR2_MCLK D26 B_DDR3_MCLKZ DDR2_MCLKZ D25 B_DDR3_CKE DDR2_DQ5 E24 B_DDR3_ODT DDR2_ODT N25 B_DDR3_RASZ DDR2_WEZ M26 B_DDR3_CASZ DDR2_BA1 N24 B_DDR3_WEZ DDR2_BA0 N26 B_DDR3_RESETB R25 B_DDR3_DQSL DDR2_DQS0 ...

Page 28: ...ormal W25Q80BVSSIG IC1401 1 S_FLASH_MAIN_WINBOND 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7 HOLD IO3 8 VCC 0 OPT R1401 FLASH_WP SPI_SDI 33 R1405 SPI_SDO SPI_SCK SPI_CS 3 3V_Normal 3 3V_Normal 4 7K R1404 10K R1403 KRC103S Q1401 OPT E B C 0 1uF C1401 MX25L8006EM2I 12G IC1401 S_FLASH_MAIN_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC SFLASH_1MB 20101023 13 GP2R Copyright 2011 LG...

Page 29: ... 1 RF_S W_CNTL 2 BST_CNTL 3 B1 5V 4 NC_1 RF_AGC 5 NC_2 6 SCLT 7 SDAT 8 NC_3 9 SIF 10 NC_4 11 VIDEO 12 GND 13 B2 1 2V 14 B3 3 3V 15 RESET 16 NC_5 17 SCL 18 SDA 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 22uF 16V C3722 22uF 10V C3715 10uF 6 3V C3739 CN 10uF 10V C3741 HALF_NIM 0 1uF 16V C3740 HALF_NIM TDFR C236D TU3701 4 CN_2INPUT_H_ALTO 1 RF_S W_CNTL 2 B...

Page 30: ...39 0 1uF C509 10uF 35V C528 12 R520 0 1uF 50V C526 10uF 10V C511 OPT 22pF 50V OPT C545 0 1uF 16V C434 0 1uF 50V C538 SPK_L 100 R503 390pF 50V C531 1 8V_AMP 100 R514 1uF 25V C522 0 1uF 50V C527 POWER_DET 22000pF 50V C525 2SC3052 Q501 E B C 1N4148W 100V OPT D501 10uF 10V C503 OPT AUD_LRCH 3 3K R508 390pF 50V C530 0 47uF 50V C534 1 8V_AMP SPK_R 22pF 50V OPT C546 1uF 25V C517 BLM18PG121SN1D L502 18pF ...

Page 31: ...F C1605 22 0uH L1601 SUBAMP_MUTE 3 5V_ST 0 1uF 50V C1603 DBG_RX 1uF OPT C1618 DBG_TX EXT_OUT_L EXT_OUT_L DBG_SW UART_DBG_SW ONSEMICONDUCTOR NLASB3157DFT2G EAN38256201 ANALOGSWITCH IC1605 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VCC EXT_OUT_R 100 R1602 0 1uF C1620 47uF 25V C1615 ONSEMICONDUCTOR NLASB3157DFT2G EAN38256201 ANALOGSWITCH IC1603 3 B0 2 GND 4 A 1 B1 6 SELECT 5 VCC 2K R1622 4 7K R1613 2SC3052 Q1601...

Page 32: ... WH O SPRING 3C RD CONTACT 4C RD O SPRING 5C RD E LUG 30V SIDE_COMP D9906 10K SIDE_CVBS R9914 100pF 50V SIDE_CVBS C9906 SIDEAV_R_IN 470K SIDE_CVBS R9906 5 6V OPT D9908 470K SIDE_CVBS R9905 1K SIDE_COMP R9912 BLM18PG121SN1D SIDE_CVBS L9902 100pF 50V SIDE_CVBS C9905 12K SIDE_CVBS R9916 SIDEAV_L_IN KJA PH 1 0177 SIDE_AV_GENDER JK9901 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 SIDEAV_DET 75 SIDE_COMP R9909 B...

Page 33: ... 1A2 1 1OE 6 1A3 5 2Y3 7 2Y2 8 1A4 9 2Y1 10 GND 11 2A1 12 1Y4 13 2A2 14 1Y3 15 2A3 16 1Y2 17 2A4 18 1Y1 19 2OE 20 VCC GND CI_MDI 0 47 R1918 0 OPT R1916 FE_TS_CLK CI_ADDR 8 CI_WE CI_TS_VAL 4 7uF 16V C1911 0 1 u F 16V C1908 OPT CI_ADDR 11 10K R1904 0 1uF 16V C1904 PCM_A 0 33 AR1901 REG CI_ADDR 14 FE_TS_DATA 0 7 CI_IORD CI_MCLKI PCM_A 14 10K R1921 33 AR1902 CI_MDI 3 33 AR1908 CI_TS_DATA 0 PCM_REG 47 ...

Page 34: ... MDS62110205 7 5T_GAS GAS3 2 MDS61887708 12 5T_GAS GAS2 4 MDS62110204 5 5T_GAS GAS1 1 MDS62110204 5 5T_GAS GAS2 1 MDS61887710 9 5T_GAS GAS2 3 MDS61887710 9 5T_GAS GAS5 3 MDS61887708 12 5T_GAS GAS5 4 MDS62110206 6 5T_GAS GAS5 MDS62110205 7 5T_GAS GAS5 2 MDS62110204 5 5T_GAS GAS5 1 MDS62110209 GAS1 5 8 5T_GAS MDS62110209 GAS2 5 8 5T_GAS MDS62110209 GAS3 5 8 5T_GAS MDS62110209 GAS4 5 8 5T_GAS MDS6211...

Page 35: ...V OPT C2103 2 2K R2100 LED_DRIVER_D L 18pF 50V OPT C2102 18pF 50V C2100 OPT V_SYNC L DIM_MOSI 18pF 50V OPT C2104 18pF 50V OPT C2101 2 2K R2101 LED_DRIVER_D L LED_DRIVER_D L_SDA 12507WR 08L P2100 L DIM_LED DRIVER 1 2 3 4 5 6 7 8 9 3 3V_Normal LED_DRIVER_D L_SCL 3 3V_Normal 10K FRC_L DIM_REVERSE_SEL R2103 10K OPT R2102 22 R4029 LED_DRIVER_D L 22 LED_DRIVER_D L R4028 L DIM_LED 20101023 21 GP2R Copyri...

Page 36: ......

Page 37: ...esidual image light spot external device color error 5 6 B Power error No power 6 7 Off when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error No response in remote controller key error recording error memory error 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F E...

Page 38: ...Y Replace Inverter or module N Repair Power Board or parts End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 13 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A28 A7 A3 First of all Check whether all of cables between board ...

Page 39: ...of Power Board 3 5V 12V 20V or 24V No Video No audio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 13 LCD TV Error symptom ...

Page 40: ...Box Different maker TV etc SVC Bulletin Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Setup Manual Tuning Signal strength Normal over 30 Signal Quality Normal over 30 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N Standard Repair Process Estab...

Page 41: ... device Cable normal External Input Component error Check external device and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error N Y End Replace module Request repair for external device cable Color error Check Test pattern Standard Repair Process Established date Revised date 4 13 LCD TV Error sym...

Page 42: ...able Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and H...

Page 43: ...d properly Check Power LED Replace Power B D Measure voltage of each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A19 A4 Standard Repair Process Established date Revised date 6 13 LCD TV Error symptom Stand By Red Operating white Close ...

Page 44: ...tatus Power off List Explanation Normal POWEROFF_REMOTEKEY Power off by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off ...

Page 45: ...V or 24V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 LCD TV Error symptom Standard Repair Process ...

Page 46: ...ed audio Discontinuation Noise only for External Input Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V or 24V Replace Main B D In case of External Input signal e...

Page 47: ...om Check R C Operating When turn off light in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check 3 5V On Main B D A27 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A27 Replace Main B D Y A27 Standard Repair Pr...

Page 48: ...al Input and Component Recognition error Check and fix external device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 11 13 LCD TV Error symptom Standard Repair Process ...

Page 49: ...m the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit n...

Page 50: ...amage Module damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 13 13 LCD TV Error symptom Standard Repair Process ...

Page 51: ...en the signal is strong use the attenuator 10dB 15dB 20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content LCD TV ...

Page 52: ...rsion checking method A Video error_Video error video lag stop 1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content LCD TV ...

Page 53: ...Standard Repair Process Detail Technical Manual LCD TV connection diagram 1 A Video error _Vertical Horizontal bar residual image light spot A8 Established date Revised date Error symptom Content LCD TV ...

Page 54: ... Key A Video error_Color error You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A12 Established date Revised date Error symptom Content LCD TV ...

Page 55: ... Broken T Con Defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange T Con Board 1 A 1 5 ...

Page 56: ...mal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 A 2 5 ...

Page 57: ...Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 ...

Page 58: ...pendix Exchange the Module 1 Panel Mura Light leakage Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage A 4 5 Un repairable Cases In this case please exchange the module ...

Page 59: ...C Defect Vertical Line Source TAB IC Defect Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module ...

Page 60: ...oller for adjustment 2 Check the entry into adjustment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content LCD TV ...

Page 61: ...ct the AUDIO function of the Menu 3 Select TV Speaker from Off to On Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A24 Established date Revised date Error symptom Content LCD TV ...

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