LG 32LV355C Service Manual Download

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Standard Repair Process Detail Technical Manual

LCD TV connection diagram (1)

A. Video error _Vertical/Horizontal bar,

residual image, light spot

Established

date

Revised

date

Error

symptom

Content

LCD TV

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 32LV355C

Page 1: ... READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LB0AC MODEL 32LV355C 32LV355C 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 MFL67223414 1105 REV01 ...

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 SCHEMATIC 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 Australia New Zealand 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: ... 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 Display and Sound check is executed by...

Page 11: ...er White Balance by pushing G key at 6 White Balance After you finished all adjustments Press In start key and compare Tool option and Area option value with its BOM if it is correctly same then unplug 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 inspec...

Page 12: ...ad Mode Mode In Carry the command EDID data and Download A E 00 10 Automatically Download Model option The use of a internal pattern download EZ ADJUT 0 Tool Option1 1 Tool Option2 2 Tool Option3 3 Tool Option4 4 Country Group 5 ADC Calibration 6 White Balance 7 Test Pattern 8 EDID D L 9 Sub B C 10 V Com 11 P Gamma EDID D L HDMI1 HDMI2 HDMI3 RGB NG NG NG NG Reset Start EDID D L Reset Start HDMI1 H...

Page 13: ...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 initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of Adjustment remote...

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: ... 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 manuf...

Page 16: ...A15 FRC_I2CS_DA Y10 FRC_I2CS_CK AA11 FRC_PWM0 AB15 FRC_PWM1 AB14 LGE107DC R 1 S7MR 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...

Page 17: ...1N E3 B_RX2P F3 B_RX2N E1 DDCDB_DA GPIO26 D4 DDCDB_CK GPIO25 E4 HOTPLUGB 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...

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: ...NV_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 PG...

Page 20: ... 22 R1019 4 7K R4035 NEW_SUB 4 7K R4034 NEW_SUB 15pF C1008 10K R1006 OPT 10K TACT_KEY R1011 3 5V_ST 3 5V_ST 22 R1076 MICOM_DEBUG AMP_MUTE POWER_ON OFF1 LED_R BUZZ LED_B LG_LOGO 0 1 u F C1006 S7_NEC_TXD 10K R1052 NEC_SCL 22 R1018 10K GP3 R1074 MICOM_RESET FLMD0 1 16W 20K 1 R1047 22 R1041 22 R1056 22 R1037 NEC_ISP_Rx S T_SCL 3 5V_ST RL_ON NEC_EEPROM_SDA MICOM_RESET EDID_WP 22 R1055 22 R1043 NEW_SUB ...

Page 21: ...IR 0 1uF C2401 100 R2412 EYEQ TOUCH_KEY S T_SDA JP2409 1000pF 50V C2406 47K R2425 OPT 3 5V_ST 2SC3052 Q2405 OPT E B C 0 1uF 16V C2410 OPT 0 1uF 16V C2405 100pF 50V C2407 BLM18PG121SN1D L2403 10K 1 R2404 10K R2430 OPT 1 5K R2413 JP2408 1000pF 50V C2404 JP2411 AMOTECH 5 6V D2401 3 5V_ST 3 5V_ST BLM18PG121SN1D L2402 47K R2429 OPT KEY2 LED_R BUZZ CDS3C05HDMI1 5 6V D903 NEW_SUB 18pF 50V OPT C907 0 R242...

Page 22: ... 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 RCLAMP0502BA D1451 OPT SIGN6409 0 07...

Page 23: ... DDC_SCL_2 BSS83 Q805 S B D G 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 EAG590233...

Page 24: ... 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 W P 8 VCC MMBT3904 F Q1101 OPT E B C 30V D1110 KJA PH 0 0177 JK3301 HEAD_PHONE_EXT_SPK 3 DETECT 4 L 5 GND 1 R 18pF 50V C1127 DSUB_HSYNC DSUB_B PEJ027 01 JK1102 6B T_TERMINAL2 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 7A B_TERMINAL1 6A T_TERMINAL1 3 E_SPRING 1000pF 50V C1116 OPT AMOTECH 5 6V OPT D1102 5 6V D1117 OPT 15K R1108 22 R1141 R1EX24002ASAS0A IC1105 1 RGB_EEMPROM_R...

Page 25: ...SW 2 IN 4 GND 1 BS 5 FB 6 COMP 7 EN 8 SS EXT_PWR_DET 4 7K POWER_OUT R67 MP5000DQ POWER_OUT IC52 3 ENABLE FAULT 2 DV DT 4 I LIMIT 1 GND 5 NC 6 SOURCE_1 7 SOURCE_2 8 SOURCE_3 9 SOURCE_4 10 SOURCE_5 11 VCC EXT_12V 1K 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 2SC3875S ALY POWER_OUT Q50 E B C 12V 15V 22UH POWER_OUT L52 ...

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: ...uF 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 50V C5...

Page 31: ...TV MNT_L_OUT 5 6V OPT D1601 COMP2_Pb 30V D1716 OPT 30V OPT D1602 12V 15V 47uF 16V EU_OPT C1621 0 EU_OPT R4210 100uF 16V EU_OPT C1620 DTV MNT_R_OUT SC_RE1 10K R1685 REAR_AV AV_CVBS_DET REC_8 470K R1626 0 01uF C1664 2SC3052 EU_OPT Q1607 ISA1530AC1 EU_OPT Q1601 E B C PSC008 01 EU_OPT JK1602 1 AUDIO_R_OUT 2 AUDIO_R_IN 3 AUDIO_L_OUT 4 AUDIO_GND 5 B_GND 6 AUDIO_L_IN 7 B_OUT 8 ID 9 G_GND 10 D2B_IN 11 G_O...

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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