LG 42LN5700, Service Manual

Page 1: ...ODEL 42LN5700 42LN5700 DH CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...Copyright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 17 BLOCK DIAGRAM 25 EXPLODED VIEW 35 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold 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 m...

Page 4: ...lectrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial 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...

Page 5: ...he 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 replace...

Page 6: ...tested as below without special notice 1 Temperature 25 ºC 5 ºC CST 40 ºC 5 ºC 2 Relative Humidity 65 10 3 Power Voltage Standard input voltage 100 240V 50 60Hz Standard Voltage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prio...

Page 7: ...T 1 Temp 20 60 deg 2 Humidity 10 90 6 Input Voltage AC100 240V 50 60Hz 7 Power Consumption Max LCD Module Backlight LED FHD T240Hz POLA 60 TBD W FPR LC600DUK SEF1 60LA7450 LA6200 DA FHD T120Hz POLA 55 TBD W FPR LC550EUJ SEK1 55LA6200 DA FHD 60Hz POLA 55 TBD W Normal LC550EUJ SEE1 55LN5700 DC FHD T120Hz CINEMA 42 56 4 W FPR LC420EUG KFF1 42LA65 66 68 6900 DA 47 62 4 W FPR LC470EUG KFF1 47LA66 68 69...

Page 8: ...6900 DA 1244 6 x 720 9 x 9 9 LC550EUN SFF1 55LA6400 DA 1232 0 x 704 0 x 1 94 LC550EUJ SEK1 55LA6200 DA 1232 0 x 704 0 x 1 94 LC550EUJ SEE1 55LN5700 DC 60 1333 0 x 758 94 x 1 42 LC600DUK SEF1 60LA6200 DA Pixel Pitch Maker Inch H V D 32 TBD LC320EUA KFF1 32LA6900 DA 170 25 x 510 75 LC320DUE SFR1 32LN570B 42 483 3 x 483 3 LC420EUG KFF1 42LA6600 6900 DA 483 3 x 483 3 LC420EUN SFF2 42LA6400 DA 483 3 x ...

Page 9: ... FPR LC420EUN SFF2 42LA6400 DA 47 FPR LC470EUN SFF2 47LA6400 DA 50 FPR LC500EUN SFF1 50LA6400 DA 55 FPR LC550EUN SFF1 55LA6400 DA 55 POLA FPR LC550EUJ SEK1 55LA6200 DA 60 FPR LC600DUK SEF1 60LA6200 DA 32 Direct LC320DXE SFR1 32LN570B DH 42 FPR LC420DUE SFU1 42LA6200 DA Normal LC420DUE SFR1 42LN 5700 DH 47 FPR LC470DUE SFU1 47LA6200 DA Normal LC470DUE SFR1 47LN5700 DH 50 FPR LC500DUE SFU1 50LA6200 ...

Page 10: ...0 576 15 625 50 13 5 SDTV 576I 6 720 576 31 25 50 13 5 SDTV 576P 7 1280 720 37 5 50 74 25 HDTV 720P 8 1280 720 45 00 60 00 74 25 HDTV 720P 9 1280 720 44 96 59 94 74 176 HDTV 720P 10 1929 1080 28 125 50 74 25 HDTV 1080I 11 1920 1080 33 75 60 00 74 25 HDTV 1080I 12 1920 1080 33 72 59 94 74 176 HDTV 1080I 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 1920 1080 67 50 60 148 50 HDTV 1080P 15 1920 1080 67 4...

Page 11: ...Refer to adjust specification 5 2 1 DTV mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I Spec out but display 2 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 4 720 480 31 47 59 94 27 SDTV 480P 5 31 5 60 00 27 027 SDTV 480P 6 720 576 31 25 50 00 27 SDTV 576P 7 1280 720 44 96 59 94 74...

Page 12: ...ential 3 1920 1080 33 75 60 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 4 1920 1080 28 125 50 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 5 1920 1080 27 00 24 00 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 6 1920 1080 28 12 25 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 7 1920 1080 33 75 30 00 74 25 HDTV 1080P 2D to 3D Sid...

Page 13: ...SDTV 480P 7 720 576 576p 720 1440 576 576i 31 25 50 27 Top and Bottom Side by side half Secondary SDTV 576P Secondary SDTV 576P 8 62 5 50 54 Frame packing Line alternative Secondary SDTV 576P SDTV 576P 9 31 25 50 54 Side by side Full SDTV 576P 10 15 625 50 27 Top and Bottom Side by side half Secondary SDTV 576I Secondary SDTV 576I 11 31 25 50 54 Frame packing Field alternative Secondary SDTV 576I ...

Page 14: ...74 25 Top and Bottom Side by side half Secondary HDTV 1080P Secondary HDTV 1080P 29 56 25 25 148 5 Frame packing Line alternative Secondary HDTV 1080P HDTV 1080P 30 28 125 25 148 5 Side by side Full HDTV 1080P 31 33 716 33 75 29 976 30 00 74 18 74 25 Top and Bottom Side by side half Primary HDTV 1080P Secondary HDTV 1080P 32 67 432 67 5 29 976 30 00 148 35 148 5 Frame packing Line alternative Prim...

Page 15: ...59 94 74 176 2D to 3D Side by Side half Top Bottom HDTV 1080I 6 1920 1080 28 12 50 74 25 2D to 3D Side by Side half Top Bottom HDTV 1080I 7 1920 1080 67 500 60 148 50 2D to 3D Side by Side half Top Bottom HDTV 1080P 8 1920 1080 67 432 59 94 148 352 2D to 3D Side by Side half Top Bottom HDTV 1080P 9 1920 1080 27 000 24 000 74 25 2D to 3D Side by Side half Top Bottom HDTV 1080P 10 1920 1080 28 12 25...

Page 16: ... Proposed 1 1920 1080 33 75 30 74 25 2D to 3D Side by Side Half Top Bottom Checkerboard Row Interleaving Column Interleaving Photo side by Side half Top Bottom HDTV 1080P 5 2 8 DLNA Input 3D No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode Proposed 1 1920 1080 33 75 30 74 25 2D to 3D Side by Side Half Top Bottom Checkerboard Row Interleaving Column Interleaving Photo side ...

Page 17: ...e 100 Full White pattern In this status you can maintain Heat Run useless any pattern generator Notice if you maintain one picture over 20 minutes Especially sharp distinction black with white pattern 13Ch or Cross hatch pattern 09Ch then it can appear image stick near black level 3 Adjustment items 3 1 PCB Assembly Adjustment MAC Address ESN Widevine Download EDID The Extended Display Identificat...

Page 18: ...ion When OTP mode is failed ADC calibration should be OK by using External mode If you want re adjust for ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 6 ADC Calibration Adjustment protocol Order Command Set response 1 Inter the Adjustment mode aa 00 00 a 00 OK00x 2 Change the Source xb 00 40 xb 00 60 b 00 OK40x Adjust 480i Comp1 Adjust 1080p Comp1 b 00 OK60x ...

Page 19: ...D data in Assembly line After Set Tool Option then TV turn off and on finish auto download EDID data for 3DTV LA62 64 66 68 69 74 Seriese Model name LG TV Rev 15xxx to confirm that Rev up subject to change HDMI EDID table HDMI 1 EDID table 0xE8 0xCC 1 HDMI 1 Check sum 0xE8 0XCC CEA Block 0x21 10 2 HDMI 2 Check sum 0xE8 0XBC CEA Block 0x21 20 3 HDMI 3 Check sum 0xE8 0XAC CEA Block 0x21 30 EDID data...

Page 20: ...319 340 2 6 10 276 280 290 303 315 335 3 11 20 272 275 286 298 311 330 4 21 30 269 272 283 295 308 327 5 31 40 267 268 281 291 306 323 6 41 50 266 265 280 288 305 320 7 51 80 265 263 279 286 304 318 8 81 119 264 261 278 284 303 316 9 Over 120 264 260 278 283 303 315 Connecting picture of the measuring instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto con...

Page 21: ...y target i First decrease B so make x a little more than the target ii Adjust x value by decreasing the G After You finish all adjustments Press In start button 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 Pus...

Page 22: ...ceiver Speaker MSHG 600 SW 1220 HDMI Cable for 1 4 version 5 5 2 Test method 1 Insert the HDMI Cable to the HDMI ARC port from the master equipment HDMI1 2 Check the sound from the TV Set 3 Check the Sound from the Speaker or using AV Optic TEST program It s connected to MSHG 600 Remark Inspect in Power Only Mode and check SW version in a master equipment 5 6 Selection of Country option Selection ...

Page 23: ...aration Check the connection between set and power cord 1 Check the POWER CABLE and SIGNAL CABE insertion condition 6 2 GND HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 GND Test Auto If Test is failed Buzzer operates If Test is passed execute next process Hi pot test Remove A V CORD from A V JACK BOX ...

Page 24: ...ffset adjustment Value default 128 B Offset adjustment Value default 128 7 2 White balance Value CENTER DEFAULT C50 0 W50 R Gain 192 192 192 G Gain 192 192 192 B Gain 192 192 192 R Cut 64 64 64 G Cut 64 64 64 B Cut 64 64 64 8 USB DOWNLOAD epk file download 1 Put the USB Stick to the USB socket 2 Press Menu key and move OPTION 3 4 Press FAV Press 7 times 5 Select download file epk file 6 After down...

Page 25: ... R E A R H AMP TI CVBS YPbPr CVBS RGB SPDIF OUT ETHERNET I2C 3 LOCAL DIMMING BLUTOOTH IR PM IC LEVEL SHIFTER WIFI KEY LOGO LIGHT SUB ASSY I2C 1 UART IR KEY USB_WIFI Audio AMP NTP7513 MTK A2 IF USB1 OPTIC LAN DDR3 1600 X 16 512MB X 2EA HDMI1 HDMI2 HDMI3 SYSTEM EEPROM 256Kb HDMI MUX Air Cable TUNER T C A TUNER S2 DVB S DEMOD S2 LNB USB2 USB3 41P 51P eMMC 4GB Sub Micom RENESAS R5F1000G DDR3 1600 X 16...

Page 26: ...vice purposes 1 2V Core DCDC 6A 3500mA 3 3V Multi DCDC 4A 2000mA 1 8V TUNER LDO 1A 240mA 1 25V TUNER LDO 2A 600mA 24V 12V 3 5VST 640mA AMP 3230mA 1 5V DDR LDO 2A 650mA 5V USB DCDC 5A 3000mA 390mA WOL WOW 400mA MICOM ETC 15mA 1065mA 730mA LNB option LNB 700mA 600mA 1330mA PANEL 1500mA 45 6W 3 5W 37 9W ...

Page 27: ... 27 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes 24V 5V USB TPS5450 5A 3000mA OCP 2CH OCP OCP USB1 USB2 USB3 MHL NetCast 4 0 ...

Page 28: ... 28 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes 12V 1 2V Core DC DC 6A 5260mA MTK A2 NetCast 4 0 MHL ...

Page 29: ...e JK501 COMP1_Y AV1_CVBS COMP1_Pb COMP1_Pr COMP1 AV1 DVI_L_IN COMP1 AV1 DVI_R_IN COMP1_Y AV1_CVBS_SOC COMP1_Pb_SOC PB0P PR0P AIN4_L_AADC COMP1_Pb_SOC COMP1 AV1 DVI_L_IN_SOC AIN4_R_AADC COMP1 AV1 DVI_R_IN_SOC TU_CVBS TUNER_SIF IF_P N CVBS1P MPXP ADCINP_DEMOD ADCINN_DEMOD TU_CVBS TUNER_SIF IF_P N Parallel TS ERROR VAL SYNC CLK Parallel TS ERROR VAL SYNC CLK ...

Page 30: ...1 DVI_R_IN_SOC ASPDIF0 Tuner TR BUF MPXP AUD_LRCH HP_LOUT HP_ROUT HEAD PHONE LPF 4P WAFER AL0_ADAC AR0_ADAC M13 MT5398 TUNER_SIF AOLRCK AOSDATA0 AUD_LRCK AUD_SCK AOBCK STB_SDA STB_SCL I2C_SDA1 I2C_SCL1 IC3000 MICOM AMP_MUTE AIN4_L_AADC AIN4_R_AADC JK501 AUD_MASTER_CLK AOMCLK OPCTRL4 AMP_RESET_N IC6100 TPA6138A2PWR HP AMP JK3602 JK3700 LPF SPEAKER_L SPEAKER_R WOOFER LPF내장 SIDE_HP_MUTE ...

Page 31: ...r training and service purposes HDMI1 HDMI1 HDMI2 HDMI2 HDMI3 HDMI3 CEC_REMOTE RENESAS MICOM HDMI_CEC MTK A2 Q3001 DDC_SCL_1_SOC DDC_SCL_2_JACK DDC_SDA_2_JACK DDC_SCL_3_JACK DDC_SDA_3_JACK TMDS Link 8bits HDMI_ARC DDC_SDA_1_SOC X tal 32 768kHz TMDS Link 8bits TMDS Link 8bits WOL_CTL ...

Page 32: ...EPI CH5 EPI CH6 VCOM_P VCOM_N VCOM_LOOP VCOM EPI CH1 EPI CH2 EPI CH3 VCOM_DYN VCOMLFB VCOMRFB GMA1 GMA3 GAM9 GMA10 GMA16 GMA18 VDD VCC VCC1 8 CLK1_I CLK6_I GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 EO GST GCLK MCLK EPI_LOCK3 EPI_LOCK6_SOURCE EPI_LOCK6 H_VDD TR Diode TR Diode SWP CTRLP SWN CTRLN VGH VGL VGL_I VGH_EVEN VGH_ODD VGH_F VGH_R 6 6 2 2 2 2 2 2 2 2 6 VST GIP_RST ...

Page 33: ...nverter VCC Buck 2 converter Vcore Buck 3 converter HVdd Buck 4 converter VCC18 Positive Charge Pump Controller Negative Charge Pump Controller 6 Ch Gamma Buffer DAC output Vcom reference gain Reset PANEL_VCC VCC18 VCC HVdd Vdd VCOM_P VCOM_N GAM4 5 7 12 14 15 CTRLN SWP SWN CTRLP VCOM_LOOP PMIC_RESET Vcore Level Shift TPS65198RUYR TR Diode TR Diode VGL VGH ...

Page 34: ...V_USB_1 5V_USB_2 USB_OCD1 USB_CTL1 USB_CTL2 USB_OCD2 USB_WIFI WIFI_DM WIFI_DP Motion Remote Receiver Motion Remote Receiver M_REMOTE_RX M_REMOTE_TX M_RFModule_RESET U1RX U1TX OPCTRL49 OPCTRL50 USB_DM_P3 USB_DP_P3 RENESAS MICOM U0TX U0RX SOC_TX SOC_RX USB_DP3 5V_USB_3 USB_CTL3 USB_OCD3 USB_DM_P1 USB_DP_P1 GPIO42 TCON12 USB_DM_P0 USB_DP_P0 USB3 USB_DM3 GPIO44 ADIN2_SRV CTS RTS ADIN4_SRV 4Pin debuggi...

Page 35: ... 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 IMPORTANT SAFETY NOTICE A2 A9 A10 900 200 400 540 521 530 500 910 120 300 510 123 122 Set ...

Page 36: ...NER R153 2 7K NON_TU_Q_KR MT5398_MISTRT R121 1 2K R158 22 OPCTRL_11_SCL MT5398_TS_IN 4 MODEL_OPT_9 M_REMOTE_RX SMARTCARD_CLK SD_EMMC_DATA 0 C110 0 1uF I2C_SCL1 3 3V_NORMAL I2C_SCL_MICOM MT5398_TS_SYNC WOL ETH_POWER_ON M_REMOTE_TX I2C_SDA1 MT5398_TS_OUT 0 7 R162 1K R118 33 OPCTRL7 R148 4 7K MTK_NON_EPI MT5398_XTAL_IN FE_DEMOD1_TS_SYNC R133 2 7K PCM_RST R131 4 7K MTK_DDR_1 25GB R120 33 R157 1K OPT V...

Page 37: ...C359 0 047uF TU_A_GLOBAL_6 7 SC_COM_SOC TXA4P C343 100pF 50V TXB4N TXB0N PCM_CE1 EPHY_RDP TP327 R372 0 R352 1 2K HP_OUT TP351 SC_R_SOC C371 0 01uF COMP1_Y AV1_CVBS_SOC HDMI_HPD_3_JACK PCM_RST TP339 TXA4N EO_SOC CI_CD2 R355 75 1 TU_RESET2 TXC4N MT5398_TS_IN 0 TP314 MCLK_SOC COMP1_Pr TP341 TP302 D2 _HDMI1_SOC TP381 MT5398_TS_SYNC TP350 C339 560pF 50V OPT D0 _HDMI3_JACK OSCL2 GST_SOC COMP1 AV1 DVI_R_...

Page 38: ... AH7 VCCK_58 AJ7 VCCK_59 AK7 VCCK_60 AL7 VCCK_61 AM7 VCCK_62 AN7 VCCK_63 L16 VCCK_64 V12 VCCK_65 U12 VCCK_66 T12 VCCK_67 AD13 VCCK_68 AD17 VCCK_69 AD14 VCCK_70 AB12 VCCK_71 AA12 VCCK_72 AC12 VCC3IO_C T9 VCC3IO_B_1 Y10 VCC3IO_B_2 AA10 VCC3IO_A_1 D22 VCC3IO_A_2 E22 DVSS_1 AC18 DVSS_2 AB21 DVSS_3 AB14 DVSS_4 N13 DVSS_5 P13 DVSS_6 R13 DVSS_7 T13 DVSS_8 U13 DVSS_9 V13 DVSS_10 W13 DVSS_11 Y13 DVSS_12 P1...

Page 39: ...Q H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 K2 VDD_5 K8 VDD_6 N1 VDD_7 N9 VDD_8 R1 VDD_9 R9 VDDQ_1 A1 VDDQ_2 A8 VDDQ_3 C1 VDDQ_4 C9 VDDQ_5 D2 VDDQ_6 E9 VDDQ_7 F1 VDDQ_8 H2 VDDQ_9 H9 NC_1 J1 NC_2 J9 NC_3 L1 NC_4 L9 A14 T7 VSS_1 A9 VSS_2 B3 VSS_3 E1 VSS_4 G8 VSS_5 J2 VSS_6 J8 VSS_7 M1 VSS_8 M9 VSS_9 P1 VSS_10 P9 VSS_11 T1 VSS_12 T9 VSSQ_1 B1 VSSQ_2 B9 VSSQ_3 D1 VSSQ_4 D8 VSSQ_5 E2 VSSQ_6 E8 VSSQ_7 F...

Page 40: ... 2 RESET R2414 10K POWER_ON OFF1 12V C2457 0 1uF 16V R2413 0 5 P_DET_BOTH_24_3 5V C2452 100pF 50V POWER_ON OFF2_1 R2404 5 1K 1 R2400 0 P_DET_BOTH_12_3 5V 3 5V_ST P2401 SMAW200 H18S1 POWER_18P 14 12V 9 24V 4 PDIM 1 18 GND 13 12V 8 GND 3 3 5V 17 GND 12 GND 7 GND 2 INV ON 16 24V 11 GND 6 PDIM 2 1 PWR ON 15 12V 10 24V 5 3 5V 19 3 3V_NORMAL R2425 100 INV_CTL R2426 1K L2411 2 2uH NR5040T2R2N IC2403 TPS5...

Page 41: ...21 11 P70 KR0 SCK21 SCL21 12 P30 INTP3 RTC1HZ SCK11 SCL11 13 P50 INTP1 SI11 SDA11 14 P51 INTP2 SO11 15 P17 TI02 TO02 16 P16 TI01 TO01 INTP5 17 P15 PCLBUZ1 SCK20 SCL20 18 P14 RXD2 SI20 SDA20 19 P13 TXD2 SO20 20 P12 SO00 TXD0 TOOLTXD 21 P11 SI00 RXD0 TOOLRXD SDA00 22 P10 SCK00 SCL00 23 P146 24 P147 ANI18 25 P27 ANI7 26 P26 ANI6 27 P25 ANI5 28 P24 ANI4 29 P23 ANI3 30 P22 ANI2 31 P21 ANI1 AVREFM 32 P2...

Page 42: ...02 MMBT3906 NXP E B C SIL_RESET HDMI_DET R3319 22 HDMI_EXT_EDID R3304 1K D1 _HDMI3_JACK Q3310 MMBT3904 NXP E B C HDMI_HPD_4_MHL L3302 BLM18PG121SN1D NON_TU_H N S_T US CEC_REMOTE DDC_SCL_MHL D2 _HDMI4_JACK R3308 100 SIL_HPD CBUS HDMI_HPD_1_SOC MHL_DET 3 3V_NORMAL Q3301 MMBT3904 NXP E B C D0 _HDMI1_SOC R3373 1K 1 16W 5 C3316 0 1uF 16V D2 _HDMI1_SOC C3314 0 1uF 16V OPT R3305 1K Q3313 MMBT3904 NXP HDM...

Page 43: ...NTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC SPDIF_OUT C3602 0 1uF 16V R3611 2 7K OPT JK3602 JST1223 001 1 GND 2 VCC 3 VINPUT 4 FIX_POLE 3 3V_NORMAL R3610 33 36 JACK HIGH MID 2011 11 21 SPDIF SPDIF OUT Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 44: ...HAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC R3700 10K HP_LOUT HP_ROUT 3 3V_NORMAL HP_DET JK3700 PEJ034 01 6B T_TERMINAL2 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 3 E_SPRING R3701 1K 37 JACK_COMMON 2011 11 21 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...4113 10uF 10V WIFI 3 3V_NORMAL R4133 10K OPT WIFI_DP 3 3V_NORMAL WIFI_DM P4101 12507WR 08L NON_EYE_Q_8P 1 GND 2 KEY1 3 KEY2 4 3 5V_ST 5 GND 6 LOGO LED_R 7 IR 8 GND 9 L4100 BLM18PG121SN1D M_RFModule_RESET LOGO_LIGHT R4113 100 AR4100 100 1 16W M_REMOTE C4104 1000pF 50V R4118 10K 5 C4107 100pF 50V R4125 10K LED_R C4112 10uF 10V WIFI RTS KEY2 IR C4120 0 1uF 16V LOGO_LIGHT KEY1 3 5V_ST_WAKE D4100 5 6V ...

Page 46: ...305 ZC LG 1 2 3 4 5 USB_DP3 USB_DP2 USB_DM2 USB_CTL3 R4301 10K D4302 RCLAMP0502BA OPT D4300 RCLAMP0502BA OPT 5V_USB_2 R4302 10K USB3 JK4300 3AU04S 305 ZC LG USB3 1 2 3 4 5 C4302 0 1uF 16V 5V_USB_3 USB_DM3 5V_NORMAL 5V_USB_2 3 3V_NORMAL 5V_USB_3 C4301 10uF 10V USB3 C4337 10uF 10V C4322 10uF 10V C4310 10uF 10V USB3 IC4306 TPS2066CDGNR 3 EN1 2 IN 4 EN2 1 GND 5 FLT2 6 OUT2 7 OUT1 8 FLT1 9 EP GND 43 US...

Page 47: ...ONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 5V_USB_1 USB_DP1 D4500 RCLAMP0502BA OPT R4500 10K OPT USB_OCD1 5V_USB_1 C4500 0 1uF 16V JK4500 3AU04S 305 ZC LG 1 2 3 4 5 USB_CTL1 USB_DM1 3 3V_NORMAL R4501 10K 5V_NORMAL C4501 10uF 10V C4502 10uF 10V IC4500 BD82020FVJ 3 IN_2 2 IN_1 4 EN 1 GND 5 OC 6 OUT_1 7 OUT_2 8 OUT_3 DVR Ready OCP USB1 USB1 MAX 1 5A Copyright ⓒ 2013 LG Electronics Inc All right reser...

Page 48: ...C P3800 12507WS 04L UART_4PIN_STRAIGHT 1 2 3 4 5 COMP1_Pr D3802 5 6V AV_COMP_ESD R3806 10K D3803 5 6V AV_COMP_ESD SOC_TX ZD3804 ADUC 5S 02 0R5L R3800 75 1 TU_DEBUG JK3800 PPJ245 01 6A GN C SPRING 7A GN E LUG 4A GN CONTACT 5B BL C SPRING 8C RD1 E LUG S 6C RD1 C SPRING 4C RD1 CONTACT 5D WH C SPRING 4E RD2 CONTACT 6E RD2 C SPRING 7E RD2 E LUG R3801 0 OPT R3811 1K R3812 1K JP4117 JP4118 EYE_SCL EYE_SD...

Page 49: ... THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC D5001 5 5V LAN_ESD EPHY_TDN D5003 5 5V LAN_ESD D5000 5 5V LAN_ESD D5002 5 5V LAN_ESD EPHY_TDP EPHY_RDN EPHY_RDP C5000 0 1uF 16V C5001 0 01uF 50V JK5000 RJ45VT 01SN002 NON_LN56 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 50 LAN_VERTICAL 2012 03 08 Ethernet Block Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service ...

Page 50: ...5412 12 R5417 5 1K SPK_L C5417 22000pF 50V 0 1uF C5401 50V I2C_SDA1 0 1uF C5419 50V C5435 0 47uF 50V SPK_L Q5400 MMBT3904 NXP AMP_MUTE_MICOM E B C C5429 390pF 50V C5404 1000pF 50V R5416 5 1K L5404 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5405 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5402 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5403 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH 1uF C5412 10V L54...

Page 51: ...OUT R6103 33K HP_OUT_MTK C6102 1uF 10V HP_OUT R6105 4 7K HP_OUT C6103 1uF 10V HP_OUT HP_ROUT_MAIN L6100 120 ohm HP_OUT BLM18PG121SN1D C6104 180pF HP_OUT_MTK R6106 43K 1 HP_OUT C6107 0 1uF 16V HP_OUT C6109 180pF HP_OUT_MTK R6102 33K HP_OUT_MTK HP_ROUT_AMP C6104 1 18pF HP_OUT_H13 C6109 1 18pF HP_OUT_H13 C6108 10pF 50V HP_OUT C6106 10pF 50V HP_OUT IC6100 TPA6138A2 3 OUTR 2 INR 4 GND_1 1 INR 6 VSS 5 M...

Page 52: ...V_M 8 S_CVBS 9 M_IF_AGC 10 M_DIF P 11 M_DIF N 12 B4 3 3V_S 13 B5 1 8V_S 14 NC_1 15 GND 16 SD_ERROR 17 SD_SYNC 18 SD_VALID 19 SD_MCLK 20 SD_SERIAL_D0 21 NC_2 22 NC_3 23 NC_4 24 NC_5 25 NC_6 26 NC_7 27 NC_8 28 GND_1 29 GND_2 30 B6 1 23V_SD 31 SD_RESET 36 SHIELD 32 B7 3 3V_SD 33 NC_9 34 SD_SCL 35 SD_SDA A1 A1 B1 B1 TU6403 TDSN B601F B TU_BR 1 RF_S W_CTL 2 RESET_TUNER 3 SCL 4 SDA 5 B1 3 3V 6 SIF 7 B2 ...

Page 53: ... NC 6 VOUT 7 ADJ 8 GND 9 EP FE_DEMOD1_TS_ERROR IF_P FE_DEMOD1_TS_SYNC TU_CVBS C6538 10uF 10V 3 3V_TU 3 3V_TU FE_DEMOD1_TS_VAL L6507 BLM18PG121SN1D TU_Q W_KR BR TW CO JP Q6501 MMBT3906 NXP TU_A_GLOBAL_6 7 E B C I2C_SCL4_TU R6513 10 TU_Q I2C_SCL4 I2C_SDA4 3 3V_TU R6508 1 1K 5 TU_N M W_CN TW BR CO C6503 0 1uF 16V TU_S N Q_T US KR TW R6502 10 TU_N M S2_RESET_TU R6510 33 FE_DEMOD1_TS_DATA 3 LNB_OUT R65...

Page 54: ...P 28 RD1N 29 RD1P 30 RD2N 31 RD2P 32 GND 33 RDCLKN 34 RDCLKP 35 GND 36 RD3N 37 RD3P 38 RD4N 39 RD4P 40 GND 41 GND 42 GND TXB1P R7102 10K LVDS_SEL_LOW TXD3P TXC2P TXB0P TXCCLKN TXD1N TXDCLKP TXC3P C7100 10uF 16V OPT TXDCLKN TXBCLKN TXA4P R7100 33 LGD_2D 3D_CTRL TXD2N TXA3P L7100 BLM18SG121TN1D LVDS_51PIN PANEL_VCC TXD2P TXA2P TXD3N TXD4N I2C_SCL1 TXA4N TXB0N TXACLKP TXD1P P7100 FI RE51S HF J R1500 ...

Page 55: ... USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC L DIM0_VS_PWR L DIM0_SCLK_PWR R7601 10K L DIM_OUT_8P P7600 12507WR 08L L DIM_OUT_8P 1 2 3 4 5 6 7 8 9 L DIM0_MOSI_PWR R7602 33 L DIM_OUT_8P R7603 33 L DIM_OUT_8P I2C_SCL1 I2C_SDA1 76 LOCAL DIMMING 2011 12 13 To LED DRIVER LOCAL DIMMING Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 56: ...VCOM_N GMA7 C7723 10uF 25V R7761 10K OPT VST 3 3V_NORMAL C7739 0 1uF 50V VCOM1 C7748 1uF 25V GMA15 TXB1N IC7700 TPS65178RSLR EPI 1 OUT4 2 SWB4 3 RST 4 OUT1 5 OUT2 6 SWB2 7 PGND2 8 SWB1_1 9 SWB1_2 10 NC 11 PVINB1_1 12 PVINB1_2 13 AVIN 14 PVINB3 15 SWB3 16 OUT3 17 PGND3 18 PGND_1 19 PGND_2 20 SW_1 21 SW_2 22 SWI 23 SWO 24 AGND 25 SS 26 COMP 27 SCL 28 SDA 29 VL 30 TCOMP 31 CTRLP 32 VGH 33 SWP 34 SWN ...

Page 57: ...AL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC VDD VDD_EPI C7801 68uF EPI C7800 68uF EPI T Con 77 2011 12 01 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...SSQ_3 N5 VSSQ_4 P4 VSSQ_5 P6 NC_1 A1 NC_2 A2 NC_3 A8 NC_4 A9 NC_5 A10 NC_6 A11 NC_7 A12 NC_8 A13 NC_9 A14 NC_10 B1 NC_11 B7 NC_12 B8 NC_13 B9 NC_14 B10 NC_15 B11 NC_16 B12 NC_17 B13 NC_18 B14 NC_19 C1 NC_20 C3 NC_22 C7 NC_23 C8 NC_24 C9 NC_25 C10 NC_26 C11 NC_27 C12 NC_28 C13 NC_29 C14 NC_30 D1 NC_31 D2 NC_32 D3 NC_33 D4 NC_34 D12 NC_35 D13 NC_36 D14 NC_37 E1 NC_38 E2 NC_39 E3 NC_40 E12 NC_41 E13 ...

Page 59: ...ILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 24V_AMP C5450 10uF 35V OPT Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ......

Page 61: ...al 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 Remote control Local switch checking 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 14 APPE...

Page 62: ... Check Link Cable LVDS reconnection condition A10 A11 A10 32 37 42 47 55 A11 32 AUO 12 Adjustment Test pattern ADJ Key A12 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A10 A11 A10 32 37 42 47 55 A11 32 AUO 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Modul...

Page 63: ...ys 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 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 is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR B D Cable ETC 20...

Page 64: ...replace MAIN B D Y Replace Power Board and repair parts N End A Video error No video No audio A4 Established date Revised date 2 13 LCD TV Error symptom 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ...ck Tuner soldering Normal Picture Y N Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Settings Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N A7 Established date Revised date 3 13 LCD TV Error symptom 2012 12 21 Standard Repair ...

Page 66: ...l device and cable Y External device Cable normal HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A8 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 A10 A11 Established date Revised date 4 13 LCD TV Error symptom 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc Al...

Page 67: ...ation of External Input Component AV and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y Check S W Version Y N Check version S W Upgrade Y N Normal screen End Screen normal N Y Check external device connection condition Y N Check and replace Link Cable Normal Y N Screen normal Replace Main B D adjust VCOM Replace module Check color condition by input...

Page 68: ...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 Established date Revised date 6 13 LCD TV Error symptom Stand By Red or Logo Light ON Operating off Close 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and se...

Page 69: ...N Y Check Power Off Mode Fix A C cord Outlet and check each 3 phase out Check A C cord Check for all 3 phase power out Check outlet Replace Main B D CPU Abnormal If Power Off mode is not displayed Check Power B D voltage Y N Replace Main B D Normal voltage Replace Power B D Replace Power B D N Y Normal End A22 A19 Abnormal 1 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc Al...

Page 70: ...ard and repair parts Check Speaker disconnection N Y Replace Speaker Cable Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 LCD TV Error symptom 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...nect 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 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Establi...

Page 72: ...ce Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 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 Established date Revised date 10 13 LCD TV Error symptom 2012 12 21 Standard R...

Page 73: ...rnal device cable 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 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 74: ...d as shown in the solution manual For models without any fix information provide the description 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 noise mechanical noise Established date Revised date 12 13 LCD TV ...

Page 75: ...ntroller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 13 13 LCD TV Error symptom A28 2012 12 21 Standard Repair Process Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...Off when on off while viewing POWER BOARD PIN voltage checking method A19 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A24 29 Voltage and speaker checking method when there is no audio A25 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A25 31 D Function error_ No response in remote controller key er...

Page 77: ...ck White Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date Error symptom Content LCD TV Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD 2012 12 21 Copyright ⓒ 2013 LG ...

Page 78: ...ON OFF 3 3 5V 4 PDIM 1 5 3 5V 6 PDIM 2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 19 GND 20 GND 21 GND 22 V SYNC 23 SPI SIN 24 SPI SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L D at power and main B D Copyright ⓒ 2013 ...

Page 79: ...NER 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 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 80: ...justment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Content LCD TV 2012 12 21 Error symptom Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 81: ...nnecting to the external input check the screen condition by signal A8 Established date Revised date Error symptom Content LCD TV ALL MODELS 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ...ace the MAIN BOARD with Main to Power Cable Speaker Cable and LVDS or EPI Cable TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content LCD TV 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ...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 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...BY condition Red or Logo Light ON Power ON condition OFF or User Settings Front LED control Menu Æ Option Æ LG Logo Light Æ Brightness and Duration 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 85: ...공통 SMAW200 H24S YEONHO 1 PWR ON OFF 2 DVR ON OFF 3 3 5V 4 PDIM 1 5 3 5V 6 PDIM 2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 19 GND 20 GND 21 GND 22 V SYNC 23 SPI SIN 24 SPI SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L...

Page 86: ...2 DVR ON OFF 3 3 5V 4 PDIM 1 5 3 5V 6 PDIM 2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 19 GND 20 GND 21 GND 22 V SYNC 23 SPI SIN 24 SPI SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L D at power and main B D Copyright ⓒ...

Page 87: ...3 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 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 88: ...Others 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 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 89: ...cess Detail Technical Manual Checking order when there is no audio Check the contact condition of or 24V connector of Main Board Measure the 24V input voltage supplied from Power Board If there is no input voltage remove and check the connector Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal Voltage...

Page 90: ...s in ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not move at all Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A27 Established date Revised date Error symptom Content LCD TV 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc All right...

Page 91: ...Which is no or minimized the Flicker If there is no flicker at default value Press the exit key and finish the VCOM adjustment Push the OK key to store the value Then the message Saving OK is pop Press the exit key to finish V COM adjustment A28 Established date Revised date Error symptom Content LCD TV 2012 12 21 Standard Repair Process Detail Technical Manual Copyright ⓒ 2013 LG Electronics Inc ...

Page 92: ...POWER_OFF_BY_LOCAL KEY POWER_OFF_BY_OTA POWER_OFF_BY_End of OTA POWER_OFF_BY_SIGNAL_DETECT POWER_OFF_BY_Another MICOM Only OLED POWER_OFF_BY_RESET POWER_OFF_BY_Factory Reset POWER_OFF_BY_UNKNOWN POWER_OFF_BY_unknown status except listed case Abnormal POWER_OFF_BY_ABN POWER_OFF_BY_abnormal Panel status POWER_OFF_BY_KEY_TIMEOUT POWER_OFF_BY_abnormal Power Off Key At Warm Hot status POWER_OFF_BY_ACDE...

Page 93: ...oken 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 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 94: ...k Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION Abnormal Display Appendix Exchange T Con Board 2 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 95: ...Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 96: ...e Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 97: ... 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 Un repairable Cases In this case please exchange the module Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...