LG 42LB700T Service Manual Download Page 54

Page: 54 / 88

Established

date

Standard Repair Process

Revised date

1/13

LCD TV

Error

symptom

A. Video error

No video/ Normal audio

2013. 11 .30

2014. 02 .04

☞

A28

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/Wi-Fi combo cable

↔

Main B/D,,,)

Normal

audio

Move to

No video
Normal audio

Check Back Light
On with naked eye

Check Power Board
12v,3.5v etc.

Normal

voltage

Replace T-con Board
or module
And Adjust VCOM

i P

Ch k P

d 24

t t

A28

☞

Move to
No video/No audio

Repair Power Board
or parts

Check Power Board 24v output

Normal
voltage

Replace Inverter
or module

o tage

Repair Power

Board or parts

End

※

Precaution

☞

Always check & record S/W Version and White
Balance value before replacing the Main Board

Replace Main Board

Re-enter White Balance value

※

Precaution

☞

LGE Internal Use Only

Summary of Contents for 42LB700T

Page 1: ...ODEL 39LB650T 39LB650T DF 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: ...Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 17 EXPLODED VIEW 25 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 pri...

Page 7: ...LCD 47 TFT WUXGA LCD 50 TFT WUXGA LCD 55 TFT WUXGA LCD 60 TFT WUXGA LCD 70 TFT WUXGA LCD 4 Operating Environment TFT 1 Temp 0 40 deg 2 Humidity 0 85 LGE SPEC 5 Storage Environment TFT 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 Slim Direct 60 72 16 W LC600DUF FGP1 60LB720T DA FHD M120Hz Direct 39 45 74 W T390HVJ01...

Page 8: ... 0 LC550DUH PGF1 55LB700T DF 6700 DA 60 1350 89x 780 54 x 28 LC600DUF FGP1 60LB720T DA 1346 8 x 774 4 x 29 9 LC600DUF FGP2 60LB6500 DF 60LB650T DF HeeSung 70 1574 06 x 912 19 x30 HC700DUF VHHD2 70LB720T DA Pixel Pitch Maker Inch H V D AUO 39 444 75 x 444 75 T390HVJ01 2 39LB650T DF LGD 42 541 5 x 541 5 LC420DUH FGP2 42LB6500 DF 42LB650T DF LC420DUH PGF1 42LB700T DF 6700 DA 47 559 3 x 559 3 LC470DUH...

Page 9: ...00 DA 42 LC420DUH PGF1 42LB700T DF 6700 DA 60 LC600DUF FPG1 60LB720T DA 70 HC700DUF VHHD2 70LB720T DA 39 Direct L T390HVJ01 2 39LB650T DF 42 LC420DUH FGP2 42LB6500 DF 42LB650T DF 47 LC470DUH FGP2 47LB6500 DF 47LB650T DF 50 LC500DUH FGP2 50LB6500 DF 50LB650T DF 55 LC550DUH FGP2 55LB6500 DF 55LB650T DF 60 LC600DUF FGP2 60LB6500 DF 60LB650T DF Display Colors 1 06 B 10 bit Except FHD 60Hz models 16 7 ...

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: ...le Frame Sequential 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...

Page 13: ...SDTV 480P 7 720 576 576p 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 10 720 1440 576 576i 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: ...hite 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 HDCP1 4 HDCP 2 0 Download EDID The Extended Display Identi...

Page 18: ...ode Manual ADC Calibration 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 9 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 b 00 OK40x Adjust 480i Comp1 Adjust 1080p Com...

Page 19: ...Check sum 0x E8 0XAC CEA Block 0x21 30 B If support 10bit support Deep color 1 HDMI 1 Check sum 0xE8 0X85 CEA Block 0x21 10 2 HDMI 2 Check sum 0x E8 0X75 CEA Block 0x21 20 3 HDMI 3 Check sum 0x E8 0X65 CEA Block 0x21 30 EDID data for Non 3DTV FHD Model name LG TV Rev 24xxx to confirm that Rev up subject to change HDMI EDID table HDMI 1 EDID table 0x42 0X1B A If the LVDS supports 8bit not support D...

Page 20: ...1 270 286 289 313 329 AUO INX Sharp CSOT BOE Model in case Cool spec 13000K cool med warm x y x y x y spec 271 270 286 289 313 329 target 278 280 293 299 320 339 Connecting picture of the measuring instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto controller or push Adjustment R C POWER ON Enter the mode of White Balance the pattern will come out Auto co...

Page 21: ...rst 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 Push The IN STOP...

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: ...message the Sensor Module is defected one You have to replace that with a good one Step 4 After check the OK message come out take out your hand from the Sensor module Check Sensor Data value change from 0 to 300 or not If it doesn t change the value the sensor is also defected one You have to replace it Caution Don t push The INSTOP KEY after completing the function inspection 6 GND and HI POT Te...

Page 24: ...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 General before 10 2 Step Set USB Expert Mode Enabled IN START System 3 USB Expert Mode 3 Press number key 7 Press 7 times 4 Select dow...

Page 25: ... 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 IMPORTANT SAFETY NOTICE 410 420 LV1 LV2 200 521 540 530 400 121 120 500 560 401 900 ...

Page 26: ...AIT_N BOOT_MODE TP112 EMMC_CMD R144 33 R155 1 2K KR_PIP_NOT L DIM0_MOSI TDO0 EMMC_RST IC103 1 M24256 BRMN6TP NVRAM_ST 3 E2 2 E1 4 VSS 1 E0 5 SDA 6 SCL 7 WC 8 VCC L DIM0_VS L DIM0_MOSI TP104 PCM_CE2 TCK0 R127 3 3K OPT I2C_SDA2 3 3V_TUNER R174 200 1 3 3V_TUNER R173 200 1 OPM1 X101 24MHz 4 GND_2 1 X TAL_1 2 GND_1 3 X TAL_2 SOC_RX AR100 33 1 16W IC101 LG1311 XIN_MAIN B23 XO_MAIN A23 PORES_N AG21 BOOT_...

Page 27: ...P_DET TPO_VAL CAM_TRIGGER_DET RST_HUB 3 3V_NORMAL FE_DEMOD3_TS_SYNC SW201 JTP 1127WEM 1 2 4 3 TPO_SOP MODEL_OPT_11 MODEL_OPT_12 MODEL_OPT_12 MODEL_OPT_11 R227 10K OPT R229 10K OPT R228 10K OPT R230 10K OPT R231 4 7K IC101 LG1311 TP_DVB_CLK AH30 TP_DVB_SOP AH32 TP_DVB_VAL AH31 TP_DVB_ERR AH33 TP_DVB_DATA7 AM33 TP_DVB_DATA6 AL32 TP_DVB_DATA5 AL33 TP_DVB_DATA4 AK32 TP_DVB_DATA3 AK33 TP_DVB_DATA2 AK31...

Page 28: ...PDIF_OUT_ARC D2 _HDMI4 R318 75 1 1005 SCART_ROUT_SOC HDMI_HPD_4 R355 0 EU AUAD_L_CH3_IN EPHY_RXD1 D1 _HDMI4 R371 0 GOOGLE R366 100 CK _HDMI1 C322 0 047uF R378 47K 1 5V_HDMI_1 AUAD_L_CH2_IN HDMI_HPD_1 DDR3_OPT1 COMP1_Pb R370 0 GOOGLE SMARTCARD_RST SD_EMMC_DATA 2 R352 22K EU I2S_AMP SC_CVBS_IN_SOC C357 1uF 10V D1 _HDMI1 AUD_SCK D0 _HDMI1 R333 33 C313 4 7uF 10V COMP1_Y_IN_SOC SCART_LOUT_SOC C11010 68...

Page 29: ..._DDR_RASN M0_DDR_DQ14 M0_DDR_DQ12 M0_U_CLKN MT41K256M16HA 125 E IC401 1 DDR_512MB_MICRON A0 N3 A1 P7 A2 P3 A3 N2 A4 P8 A5 P2 A6 R8 A7 R2 A8 T8 A9 R3 A10 AP L7 A11 R7 A12 BC N7 A13 T3 NC_5 M7 BA0 M2 BA1 N8 BA2 M3 CK J7 CK K7 CKE K9 CS L2 ODT K1 RAS J3 CAS K3 WE L3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 DML E7 DMU D3 DQ0 E3 DQ1 F7 DQ2 F2 DQ3 F8 DQ4 H3 DQ5 H8 DQ6 G2 DQ7 H7 DQ8 D7 DQ9 C3 DQ10 C8 DQ1...

Page 30: ...3 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 F9 VSSQ_8 G1 VSSQ_9 G9 M1_DDR_A9 M1_1_DDR_VREFDQ M1_DDR_DQ20 M1_DDR_A15 M1_DDR_ODT M1_DDR_DQ13 M1_DDR_DQ5 R503 100 C525 1uF M1_DDR_CASN M1_DDR_DQ4 1 5V_DDR M1_DDR_DQ26 M1_DDR_DQ18 1 5V_DDR C540 1uF M1_DDR_DM0 1 5V_DDR M1_DDR_DQS_N0 M1_DDR...

Page 31: ...2 W12 AVDD11_C4TX_3 Y12 AVDD11_C4TX_4 AA12 DVDD11_XTAL G18 DVDD11_DR3PLL H18 DVDD11_CVBSPLL AF23 AVDD11_DMD_1 AF24 AVDD11_DMD_2 AF25 DVDD18_EMMC_1 L26 DVDD18_EMMC_2 M26 IC101 LG1311 GND_1 B22 GND_2 B24 GND_3 C22 GND_4 C23 GND_5 C24 GND_6 D4 GND_7 D5 GND_8 D6 GND_9 D20 GND_10 D21 GND_11 E6 GND_12 E20 GND_13 E21 GND_14 F6 GND_15 F7 GND_16 F8 GND_17 F18 GND_18 F19 GND_19 F20 GND_20 F21 GND_21 G7 GND_...

Page 32: ...LM18PG121SN1D L2302 BLM18PG121SN1D C2344 2700pF 50V 1 5V_DCDC_RHOM IC2306 AZ1117EH ADJTRG1 ADJ GND OUT IN C2356 0 1uF 50V P_DET_BOTH_12_3 5V L2303 UBW2012 121F C2328 10uF 16V C2303 0 1uF 16V PWM_DIM R2301 10K C2311 10uF 35V 3 3V_NORMAL R2326 1 1 2K 1 P_DET_BOTH_12_3 5V R2322 4 3K 1 16W 1 R2327 8 2K P_DET_BOTH_24_3 5V R2311 10K 5V_USB_2 R2350 100 C2300 22uF 10V R2336 100K P_DET_BOTH_12_3 5V R2351 4...

Page 33: ... 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 P20 ANI0 AVREFP 33 P130 34 P01 TO00 RXD1 35 P00 TI00 TXD1 36 P140 PCLBUZ0 INTP6 37 P120 ANI19 38 P41 TI07 TO07 39 P40 TOOL0 40 RESET 41 P124 XT2 EXCLKS 42 P123 XT1 43 P137 INTP0 44 P122 X2 EXCLK 45 P121 X1 46 REGC 47 VSS 48 VDD MODEL1_OPT_0 X300...

Page 34: ...1 R3247 10K R3254 10K CK _HDMI1 CK _HDMI2 VA3216 ESD_HDMI 5V_NORMAL 5V_NORMAL VA3207 ESD_HDMI MHL_DET VA3212 ESD_HDMI D2 _HDMI2 DDC_SCL_2 D0 _HDMI4 CK _HDMI4 VA3210 ESD_HDMI CEC_REMOTE R3265 100K VA3217 5 6V D3216 MMBD6100 A2 C A1 D2 _HDMI1 JK3202 DAADR019A EAG63530101 14 ARC 13 CE_REMOTE 5 D1_GND 20 BODY_SHIELD 12 CK 11 CK_GND 2 D2_GND 19 HP_DET 18 5V 10 CK 4 D1 1 D2 17 GND 9 D0 8 D0_GND 3 D2 16 ...

Page 35: ... 5E RD2 O SPRING 6E RD2 E LUG R327 100 COMP2_Y_IN_SOC_SOY 3 5V_ST JK3401 JST1223 001 1 GND 2 VCC 3 VINPUT 4 FIX_POLE R3826 150 HP_OUT 3 3V_NORMAL R3409 100 HP_OUT C328 1000pF SPDIF_OUT DOUT1 VA3806 5 5V TP3400 C325 0 047uF JK3403 PEJ034 01 6B T_TERMINAL2 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 3 E_SPRING R3801 1K IRB_3 3V R3824 0 IR_Bla SOC_TX VA3800 5 6V SOC_RX HP_LOUT COMP1_Pb VA3805 5 5V R3802 1K ...

Page 36: ... 5V_WOL 3 5V_ST R4001 100 IR C4007 100pF 50V 3 5V_ST R4008 10K 5 R4016 47 1 10W 5 IR_PROTO C4016 5pF 50V OPT R4011 100 WIFI_DM C4005 0 1uF C4001 0 1uF OPT EYE_SCL R4009 10K 5 C4009 0 1uF 16V OPT C4003 0 1uF EYE_SDA BT_RESET R4002 100 C4015 5pF 50V OPT D4000 RCLAMP0502BA OPT WIFI_DP 3 5V_ST C4002 0 1uF OPT KEY2 P4000 SMAW200 H18S5 14 KEY2 9 SDA 4 USB_DM 18 GND 13 GND 8 GND 3 BT_RESET 17 LED_R 12 KE...

Page 37: ...B_2 USB_DM2 D4301 5V USB_ESD_SD05 USB_DM3 D4303 5V USB_ESD_SD05 5V_USB_3 USB_DP3 USB_DP2 JK4300 3AU04S 305 ZC LG 1 2 3 4 5 C4323 22uF 10V C4311 22uF 10V C4322 10uF 10V C4310 10uF 10V D4302 RCLAMP0582B USB_ESD_0582B D4300 RCLAMP0582B USB_ESD_0582B D4302 1 RCLAMP0502BA USB_ESD_0502BA D4300 1 RCLAMP0502BA USB_ESD_0502BA MID_LG1311 1 2013 04 03 USB 2 3 PAGE 13 MAX 1 5A USB3 USB2 MAX 1 5A EAX6536390 Us...

Page 38: ..._DP1 C4500 0 1uF 16V 5V_NORMAL USB_CTL1 USB_OCD1 JK4500 3AU04S 305 ZC LG 1 2 3 4 5 D4501 5V USB_ESD_SD05 C4502 22uF 10V OPT R4502 14K 1 IC4500 BD2242G 3 EN 2 GND 4 OC 1 VIN 6 VOUT 5 ILIM R4501 4 7K C4501 10uF 10V D4500 RCLAMP0582B USB_ESD_0582B D4500 1 RCLAMP0502BA USB_ESD_0502BA 1 MID_LG1311 USB 1 DVR 2013 04 03 PAGE 14 USB1 2 0 MAX 1 5A OCP USB1 value change 10K 2 63V 4 7K 2 97V EAX6536390 Use R...

Page 39: ...TS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC C5000 0 1uF 16V D5002 5 5V LAN_ESD D5001 5 5V LAN_ESD C5001 0 01uF 50V JK5000 RJ45VT 01SN002 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 D5000 5 5V LAN_ESD EPHY_RDN EPHY_RDP EPHY_TDN EPHY_TDP D5003 5 5V LAN_ESD PAGE 16 Ethernet Block Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE I...

Page 40: ... 25 LED1 PHYAD 1 26 CRS CRS_DV 27 COL 28 RXER FXEN 29 DVDD10OUT 30 AVDD33_2 31 CKXTAL1 32 CKXTAL2 5 MDI 1 8 RXDV 6 MDI 1 4 MDI 0 2 AVDD10OUT 33 EP R5204 2 49K 1 C5200 4 7uF 10V ET_COL SNI R5200 3 3K R5202 1M OPT LAN_JACK_POWER C5208 0 1uF 16V C5211 0 1uF 16V ET_COL SNI EPHY_TDP 3 5V_WOL 3 5V_WOL EPHY_ACTIVITY R5218 0 EPHY_RXD0 EPHY_RDP 3 5V_WOL EPHY_RXD1 EPHY_CRS_DV R52173 3K EPHY_TXD1 EPHY_MDC C5...

Page 41: ...600 UBW2012 121F AUD_LRCK R5605 3 3 1 10W C5615 1uF 10V C5600 1000pF 50V AMP_MUTE_MICOM SPK_R AUD_MASTER_CLK C5610 1uF 10V 3 3V_NORMAL C5614 390pF 50V 0 1uF C5620 50V C5609 22000pF 50V R5606 3 3 1 10W R5600 10K AMP_MUTE_MICOM R5602 100 AMP_MUTE_MICOM L5605 NRS6045T100MMGK 10 0uH L5604 NRS6045T100MMGK 10 0uH I2C_SDA1 I2S_AMP C5602 1uF 10V C5604 22000pF 50V R5608 4 7K AUD_LRCH L5602 NRS6045T100MMGK ...

Page 42: ...UT 3 OUTR 2 INR 4 GND_1 1 INR 6 VSS 5 MUTE 7 CN 8 CP 9 VDD 10 GND_2 11 UVP 12 OUTL 13 INL 14 INL R6106 43K 1 HP_OUT R6101 10K HP_OUT C6102 1uF 10V HP_OUT R6103 43K 1 HP_OUT C6104 18pF HP_OUT C6101 1uF 10V HP_OUT R6105 4 7K HP_OUT 3 3V_NORMAL R6102 43K 1 HP_OUT C6109 18pF HP_OUT C6105 1uF 10V HP_OUT C6103 1uF 10V HP_OUT SIDE_HP_MUTE C6108 10pF 50V HP_OUT R6100 10K HP_OUT C6107 0 1uF 16V HP_OUT 3 3V...

Page 43: ... 25 S_RESET_DEMOD 26 B3 3 3V 27 SCL_DEMOD 28 B4 1 1V 29 NC_10 30 SDA_DEMOD 47 SHIELD B1 B1 A1 A1 TDJH G101D TU6401 1 TU_H_AJ 47 SHIELD 6 IF P 7 IF N 8 NC_2 9 NC_3 1 B1 3 3V 2 NC_1 3 IF_AGC 4 SCL 5 SDA A1 A1 B1 B1 TU6402 1 TDJM B101F TU_M_BR 1 B1 3 3V 2 RF_SW_CTL 3 AIF_AGC 4 SCL_RF 5 SDA_RF 6 AIF P 7 AIF N 8 NC_1 9 NC_2 10 NC_3 11 NC_4 12 ERROR 13 GND_1 14 MCLK 15 SYNC 16 VAILD 17 D0 18 D1 19 D2 20...

Page 44: ...C6501 0 1uF 3 3V_LNA_TU TU_RESET2 FE_DEMOD2_TS_DATA 3 3V_TU TU_RESET2_TU R6504 10 TU_ALL_IntDemod I2C_SCL4_TU TU_SIF_TU TUNER_SIF FE_DEMOD1_TS_VAL FE_DEMOD1_TS_DATA 3 TU_RESET1_TU FE_DEMOD2_TS_ERROR R6501 100 TU_M W 3 3V_NORMAL C6518 10uF 10V TU_M W R6500 10K TU_M W FE_DEMOD1_TS_DATA 5 IF_AGC_TU TU_CVBS RF_SWITCH_CTL R6507 1K TU_K M W_TW BR CO CN R6519 1 16K TU_M W_1 1V FE_DEMOD1_TS_ERROR L6503 BL...

Page 45: ...XB3N TX1N TXD1N TX16N TXB2N TX3N TXB1N TX4N R7215 10K LVDS_SEL_LOW 2D 3D_CTL TXC2N TX21N I2C_SDA1 TXC3N TX19N TXA3P TX7P TXD4P TX12P TXA0P TX11P TXA2P TX9P TXC0N TX23N 2D 3D_CTL R7221 33 AUO_2D 3D_CTRL OPC_EN TXA4N TX6N TXA4P TX6P TXC0P TX23P TXD0N TX17N TXD0P TX17P TXB2P TX3P TXB1P TX4P I2C_SCL1 TXC4N TX18N TXB0P TX5P TXB3P TX1P R7220 33 AUO_L D_EN TXC2P TX21P R7218 33 LGD_T Con_Scanning TXC1P TX...

Page 46: ... BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC L DIM0_VS R7401 10K L DIM_OUT_8P I2C_SDA2 L DIM0_MOSI L DIM0_SCLK I2C_SCL2 P7400 12507WR 08L L DIM_OUT_8P 1 2 3 4 5 6 7 8 9 AR7400 33 1 16W L DIM_OUT_8P LOCAL DIMMING 2012 09 14 BSD NC4_H074 HD To LED DRIVER LOCAL DIMMING PAGE 28 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE...

Page 47: ...inch 1 1V_VDD GMA5 R7774 1K EPI_LOCK8 6_SOURCE GIP_RST GMA15 I2C_SDA2 GST_SOC PVCOM R7732 0 EPI_V14 VCOM_TOP GMA4_1 R7726 0 EPI_V14 SS C7724 1uF 25V D7705 100V 1N4148W R7748 1K GMA1 Z_OUT COMP VGL VST TCOMP GMA14 R7750 20K 1 10W GMA10 CTRLP VGH_EVEN C7719 15pF 50V H_VDD 8V VCOM_R_FB RE VL GMA12 C7703 0 01uF 50V EPI_LOCK8 6 GMA4 C7720 15pF 50V R7700 2K 1 16W VDD R7755 33 VCOM_BOT EPI_LOCK4 3 CLK4 C...

Page 48: ... NC_70 K13 NC_71 K14 NC_72 L1 NC_73 L2 NC_74 L3 NC_75 L12 NC_76 L13 NC_77 L14 NC_78 M1 NC_79 M2 NC_80 M3 NC_81 M7 NC_82 M8 NC_83 M9 NC_84 M10 NC_85 M11 NC_86 M12 NC_87 M13 NC_88 M14 NC_89 N1 NC_90 N3 NC_91 N6 NC_92 N7 NC_93 N8 NC_94 N9 NC_95 N10 NC_96 N11 NC_97 N12 NC_98 N13 NC_99 N14 NC_100 P1 NC_101 P2 NC_102 P8 NC_103 P9 NC_104 P11 NC_105 P12 NC_106 P13 NC_107 P14 IC8100 3 THGBMAG7A2JBAIR EMMC4...

Page 49: ...20 IR_Bla R11030 1M OPT IR_B_RESET R11008 33 IR_Bla 3 3V_IR_Bla IRB_SPI_CK TCK1 10uF 10V C11004 IR_Bla Q11001 SBT2222A_AUK IR_Bla E B C IRB_DATA C11008 10uF IR_Bla IRB_3 3V IC11002 MC96FR3128R IR_Bla 3 XOUT 2 XIN 4 P20 RESETB 1 VSS 6 P11 KS9 MISO1 5 P10 KS8 MOSI1 7 P12 KS10 INT0 8 P13 KS11 INT1 9 P14 KS12 SS1 INT2 10 P15 KS13 XCK1 INT3 11 P16 KS14 MOSI0 12 P17 KS15 MISO0 13 P30 SS0 EC2 EXTREF 14 P...

Page 50: ...C 20S 02 010L OPT C6808 0 1uF RS232C C6809 0 1uF RS232C C6810 0 1uF RS232C DOUT1 SOC_RX R6821 100 RS232C 3 5V_ST C6813 0 1uF RS232C IC6801 MAX3232CDR EAN41348201 RS232C 3 C1 2 V 4 C2 1 C1 6 V 5 C2 7 DOUT2 8 RIN2 9 ROUT2 10 DIN2 11 DIN1 12 ROUT1 13 RIN1 14 DOUT1 15 GND 16 VCC R6820 100 RS232C SOC_TX RIN1 ZD6802 ADUC 20S 02 010L 20V OPT C6811 0 1uF RS232C PAGE 32 RS 232C Control INTERFACE Copyright ...

Page 51: ......

Page 52: ...d end LJ42B LB7200 S LB7000 S LB6500 S LB7200 S LB7000 S LB6500 S LT42B LB720T D LB6700 D LB700T D LB650T D LB6500 D LB650T D LB6500 D Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ... 6 7 Off when on off while viewing power auto 7 7 g on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Normal Motion Remote Controller operating error 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 Fi t f ll Ch k h th th i SVC B ll ti i GCSC S t f th d l First o...

Page 54: ...On Y N Check Power Board 12v 3 5v etc Normal voltage Y N Replace T con Board or module And Adjust VCOM R i P B d Ch k P B d 24 t t A28 A5 Move to No video No audio Repair Power Board or parts Check Power Board 24v output Normal voltage Y Replace Inverter or module o tage N Repair Power Board or parts End Precaution A4 Always check record S W Version and White Balance value before replacing the Mai...

Page 55: ...ymptom 2013 11 30 2014 02 04 A5 Normal voltage Check various voltages of Power Board 3 5V 12V or 24V No Video No audio Check and replace MAIN B D Y N End Replace Power Board and repair parts Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...l Check whether other equipments have problem or not By connecting RF Cable at other equipment ex DVD Player Set Top Box Different maker TV etc A7 N Check RF Cable Connection 1 Reconnection 2 Install Booster Check S W Version SVC Bulletin Check Tuner soldering Y Y Close Normal Picture Y N A7 Normal Picture N S W Upgrade Replace Main B D Normal Picture N Contact with signal distributor or broadcast...

Page 57: ... DVI A8 Y Replace module Color error N condition N Check error color input mode N End Y External device Cable normal External Input Component error Check external device and cable Replace Main B D N Check Test pattern A12 N Request repair for external device cable Y External device Cable normal HDMI DVI error Check external device and cable Replace Main B D Copyright ⓒ 2014 LG Electronics Inc All ...

Page 58: ...D End Check Test pattern For other panel External device screen error Color error External Connect other external Check screen condition by input Check S W Version N Check Input error device and cable Check normal operation of External Input Component and HDMI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal y External Input Component HDMI DVI Component er...

Page 59: ...igh Check Power LED Replace Power B D Y OK A17 Stand By Red or No color A18 Check Power cord was inserted properly Measure voltage of each output of Power B D Replace Main B D N Normal A5 Y Normal voltage Replace Main B D Y Normal Y N Check ST BY 3 5V Replace Power B D N Y Normal voltage A18 Close Replace Power B D Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and servic...

Page 60: ...MOTEKEY 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 Please refer to the all cases which can be displayed on power off mode Normal POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROF...

Page 61: ...nu Speaker off Off N Y Check audio B 24V of Power Board Normal voltage Y N A24 A25 Cancel OFF Replace Power Board and repair parts Check Speaker disconnection N Y Connect Speaker to Main cable Replace MAIN Board End Disconnection Connect Speaker to Main cable Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...put signal Signal normal Y Check audio B Voltage 24V Replace Main B D N Noise only for D TV Wrecked audio Discontinuation Noise only Replace Power B D N voltage signal Replace Main B D N o se o y for Analog Wrecked audio Discontinuation Noise only When RF signal is not received Request repair to external cable ANT provider Replace Main B D End Noise only for External Input Connect and check other ...

Page 63: ...terference When turn off light in room Baterry of R C Close N Replace Power B D or Replace Main B D Power B D don t have problem IR B D Y from light in room 2 Motion Remote control operating error A29 Replace Main B D A29 Y N Check Motion R C itself Operation Normal operating Y Check Repair Cable connection Connector solder Normal operating Check 3 5V_WOL On Main B D A29 Normal Voltage N A5 Check ...

Page 64: ...sion N Technical information Check input signal Signal input Y External Input and Component Recognition error Replace Main B D S W Version Y N Check and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Fix in accordance with technical with technical information Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Us...

Page 65: ...13 11 30 2014 02 04 Replace module Zoom part with exterior damage Module damage Adjust VCOM Cabinet damage Replace cabinet A28 Replace remote controller Remote controller damage Stand dent Replace stand Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...ovide 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 If there is a Tak Tak noise from 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 agree apply the process by stage Describe the...

Page 67: ...ing Part A9 11 Check Link Cable LVDS reconnection condition 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 residual image light spot 15 Adjustment Test pattern ADJ Key A12 16 Exchange T Con Board 1 A 1 5 17 Exchange T Con Board 2 A 2 5 Appendix Defected Type cause...

Page 68: ...D PIN voltage checking method A18 viewing 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 there is no audio 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A25 D Function error No response in remote Normal Remote controller operation ...

Page 69: ...date Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 10 3 Aft di th R G B GAIN C t l f C l T C l M di W 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 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Us...

Page 70: ...iff t f d l Check the DC 24V 12V 3 5V 24 Pin Power Board Main Board Common SMAW200 H24S5 Power Board Shape is different of models 1 Power on 2 INV_ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 L DIM0_VS 23 L DIM0_MOSI 24 L DIM0_SCLK Copyright ⓒ 2014 LG Electronics Inc All right reserved On...

Page 71: ...m Content LCD TV Established date Revised date 2013 11 30 2014 02 04 Menu QUICK SETTING Æ Channels Æ Channel Tuning Æ Manual Tuning Æ Antenna DTV p g g g ALL MODELS date When the signal is strong use the attenuator 10dB 15dB 20dB etc Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 72: ...evised date Error symptom Content LCD TV 2013 11 30 2014 02 04 g 1 Checking method for remote controller for adjustment ALL MODELS date Version Press the IN START with the remote ess t e S t t e e ote controller for adjustment Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 73: ...ual image light spot A8 Established date Revised date Error symptom Content LCD TV 2013 11 30 2014 02 04 g date ALL MODELS As the part connecting to the external input check the screen condition by signal Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 74: ...ecking method 1 Check the signal strength or check whether the screen is normal when the external device is connected 1 Check the signal strength or check whether the screen is normal when the external device is connected 2 After measuring each voltage from power supply finally replace the MAIN BOARD Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE ...

Page 75: ...ptom Content LCD TV 2013 11 30 2014 02 04 j p y date You can view 7 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 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...k S ld d f t CNT B k Abnormal Power Section T Con Defect CNT Broken T Con Defect CNT Broken T Con 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 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...rt Crack Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Abnormal Display Solder defect Short Crack p p Noise GRADATION GRADATION Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...ED driver Board PSU A 3 5 No Light Dim Light Dim Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ...age Press damage Panel Mura Light leakage Crosstalk Crosstalk Press damage Un repairable Cases In this case please exchange the module Press damage Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 80: ...efect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Un repairable Cases Horizontal Block In this case please exchange the module Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only...

Page 81: ...d date Revised date Error symptom Content LCD TV 2013 11 30 2014 02 04 p y date ST BY condition On Power ON condition Off Be careful LB65 LB67 LB69 LB70 LB72 Models have a Standby Light Control UI Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ...k the DC 24V 12V 3 5V 24 Pin Power Board Main Board Common SMAW200 H24S5 Power Board Shape is different of models SMAW200 H24S5 1 Power on 2 INV_ON 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 19 GND 20 GND 21 GND 22 L DIM0_VS 23 L DIM0_MOSI 24 L DIM0_SCLK Copyright ⓒ 2014 LG Electronics Inc All right reserved Only ...

Page 83: ...tablished date Revised date Error symptom Content LCD TV 2013 11 30 2014 02 04 g ALL MODELS date Entry method 1 Press the IN START button of the remote controller for adjustment 2 Check the entry into adjustment item 3 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...rror symptom Content LCD TV 2013 11 30 2014 02 04 g ALL MODELS date Checking method 1 Press the MENU button on the remote controller 2 Select the Sound function of the Menu 2 Select the Sound function of the Menu 3 Select Sound Out function of the Menu Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 85: ...0 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21 GND 22 L DIM0_VS 23 L DIM0_MOSI 24 L DIM0_SCLK Checking order when there is no audio Check the contact condition or 24V connector of Main Board Measure the 24V input voltage supplied from Power Board If there is no input voltage remove the cable and check the connector Connect the tester RX1 to the speaker terminal and ...

Page 86: ... 8 GND 9 EYE_SDA 10 GND 11 EYE_SCL 12 KEY1 13 GND 14 KEY2 15 IR 16 3 5V_ST 17 LED_R 18 GND Checking order 1 2 Check IR cable condition between IR Main board 3 Check the st by 3 5V on the terminal 16 4 Wh h ki th P A h th i i ON diti it i l h th A l 4 When checking the Pre Amp when the power is in ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not mo...

Page 87: ... the adj key select V COM As pushing the right or the left button on the remote controller And find the V COM value Which is no or i i i d th Fli k 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 Copyright ⓒ 2014 LG Elect...

Page 88: ...0 1 GND 2 3 5V WOL 2 3 5V_WOL 3 BT_RESET 4 USB_DM 5 NC 6 USB_DP 7 WOL 8 GND 9 EYE_SDA 10 GND 11 EYE_SCL 12 KEY1 13 GND 14 KEY2 Checking order 1 2 Check IR cable condition between IR Main board 15 IR 16 3 5V_ST 17 LED_R 18 GND 1 2 Check IR cable condition between IR Main board 3 Check the 3 5V_WOL on the terminal 2 4 Check the B T version value Copyright ⓒ 2014 LG Electronics Inc All right reserved...

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