LG 32LN5650 Page 52 Service Manual Download

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Standard Repair Process Detail Technical Manual

Power Board voltage measuring method

A. Video error_No video/ Audio

Established

date

Revised

date

Error

symptom

Content

LCD TV

Check the DC 24V, 12V, 3.5V.

18 Pin

(Power Board ↔ Main Board) - Common

Power on

DRV ON

3.5V

PDIM#1

3.5V

PDIM#2

GND

24V

GND

12V

N.C

GND

Edge LED

2013. 01 .09

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 32LN5650

Page 1: ...ODEL 32LN5650 32LN5650 TA 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: ...Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 BLOCK DIAGRAM 14 EXPLODED VIEW 15 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: ...ctrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing 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 e...

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: ... receiver must be operated for about5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 Model General Specification No Item Specification Remarks 1 Market Asia Oceania Africa Middle East PAL DVB Market 2 Broadcasting system 1 PAL SECAM B G D K 2 PAL I 3 NTSC M 4 DVB T 3 Channel Storage ATV...

Page 7: ...0 480 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 28 125 50 00 74 25 HDTV 1080I 7 1920 1080 26 97 27 23 97 24 74 17 74 25 HDTV 1080P 8 1920 1080 33 716 33 75 29 976 30 00 74 25 HDTV 1080P 9 1920 1080 56 250 50 148...

Page 8: ...heck 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 epk file download 1 Put the USB Stick to the USB socket 2 Aut...

Page 9: ...C Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 8 ADC Calibration Caution Using P ONLY key of the Adjustment remote control power on TV ADC Calibration Protocol RS232 Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 aa 00 90 End Adjust mode Required equipment Adjustment remote control 4 2 Function Check 4 2 1 Che...

Page 10: ... R Gain G Gain B Gain should be kept on 0xC0 and adjust other two lower than C0 When R G B Gain are all C0 it is the FULL Dynamic Range of Module Full White Pattern CA 210 COLOR ANALYZER TYPE CA 210 RS 232C Communication Mode Color Temp Color coordinate Remark Cool C50 13 000 K X 0 271 0 002 Y 0 270 0 002 Test Signal Inner pattern for W B adjust External white pattern 80IRE 204gray Medium 0 9 300 ...

Page 11: ... First adjust the coordinate far away from the target value x y 1 x y target i Decrease the R G 2 x y target i First decrease the B gain ii Decrease the one of the others 3 x target y target i First decrease B so make y a little more than the target ii Adjust x value by decreasing the R 4 x target y target i First decrease B so make x a little more than the target ii Adjust x value by decreasing t...

Page 12: ...AGE CURRENT At 0 5mArms 6 Local Dimming Function Check Step1 Turn on TV Step2 Press P only key enter to power only mode and escape the P only Mode by pressing Exit key Step3 Press Tilt key entrance to Local Dimming mode Step4 At the Local Dimming mode module Edge Backlight moving Top to bottom Back light of module moving Step5 confirm the Local Dimming mode Step6 Press Exit key NO Item CMD 1 CMD 2...

Page 13: ...3 Don t wear a 3D Glasses check the picture like below 8 EYE Q function check Step1 Turn on TV Step 2 Press EYE key of Adj R C Step 3 Cover the Eye Q sensor on the front of the using your hand and wait for 6 seconds Step 4 Confirm that R G B value is lower than 10 of the Raw Data Sensor data Back light If after 6 seconds R G B value is not lower than 10 replace Eye Q sensor Step 5 Remove your hand...

Page 14: ...102 DDR3 SDRAM 2Gbit IC1201 PCM_A 0 7 A MDQL 0 7 A MDQU 0 7 B MDQL 0 7 B MDQU 0 7 RXA0 RXA4 RXACK RXB0 RXB4 RXBCK 8P connector P600 KEY1 2 LED_R BUZZ IR SPK_L AMP_SCL SDA AUD_MASTER_CLK AUD_LRCH AUD_LRCK AUD_SCK STA380 IC3401 MHL_CD_SENSE OCP IC IC802 MHL_CD_SENSE AVDD5V_MHL VBUS_EN AV JK1701 USB1_OCD CTL DCDC OCP IC IC401 5V_USB USB JK1500 System EEPROM 256Kbit IC104 Serial Flash 8Mbit IC1300 SPI...

Page 15: ...IEW Many 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 ...

Page 16: ...I_TS_DATA 5 PCM_D 2 PCM_A 14 CI_TS_DATA 4 SCART1_Lout PCM_REG HP_ROUT PCM_IOWR CI_TS_DATA 1 PCM_RST PCM_A 12 CI_TS_VAL CI_TS_DATA 3 PCM_WAIT SCART1_Rout CI_TS_DATA 6 PCM_D 4 PCM_A 8 DTV MNT_VOUT PCM_D 7 CI_DET PCM_OE SIDE_HP_MUTE CI_TS_DATA 7 S2_RESET PCM_IORD PCM_A 11 SC1_B COMP1_Pb SC1_G COMP1_Y SC1_R COMP1_Pr SC1 COMP1_L_IN SC1 COMP1_DET SC1 COMP1_R_IN FE_TS_DATA 1 FE_TS_DATA 2 FE_TS_DATA 3 FE_...

Page 17: ...09 0120P N2 3 5V_ST 3 3V_Normal USB1_CTL R438 22K R433 10K R436 15K 3 5V_ST C425 0 1uF 16V R408 100 PWM2_2CH_POWER PANEL_CTL 001 AL22 5V_USB R434 10K R409 2K R416 10K R415 100 3 5V_ST POWER_DET_RESET USB1_OCD R463 10K RESET_IC_SOC_RESET 3 3V_Normal L401 CIC21J501NE BEAD_SAMSAUNG L420 BLM18PG121SN1D R482 8 2K 1 PD_ 24V 5V_Normal C404 0 1uF 16V C438 0 1uF 25V OPT 2 5V_Normal C474 0 1uF R404 100K PD_...

Page 18: ...NG IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 12 06 20 USB 7 NC4_S7LRM JK700 3AU04S 305 ZC LG 1 2 3 4 5 D700 RCLAMP0502BA OPT SIDE_USB1_DM SIDE_USB1_DP 5V_USB C700 22uF 10V USB SIDE Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 19: ...uF 25V HDMI 2 R804 0 HDMI 2 JK803 EAG62611204 HDMI 2 14 NC 13 CE_REMOTE 5 D1_GND 20 BODY_SHIELD GND 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 DDC_DATA 7 D0 6 D1 15 DDC_CLK R815 10K HDMI 2 Q804 HDMI 2 E B C Q806 HDMI 2 E B C Q805 HDMI 2 E B C R813 10K HDMI 2 R816 10K HDMI 2 MHL_OCP_EN R802 0 HDMI 2 R824 2 7K HDMI 2 R825 2 7K HDMI 2 R810 0 HDMI 2 R831 300K...

Page 20: ...7 HEAD_PHONE 3 DETECT 4 L 5 GND 1 R 3 3V_Normal R1504 10K HEAD_PHONE C1503 1000pF 50V OPT HP_LOUT R1503 1K HEAD_PHONE HP_DET 3 5V_ST HP_ROUT SIDE_HP_MUTE R1501 1K HEAD_PHONE C1502 1000pF 50V OPT R1502 1K HEAD_PHONE Q1502 MMBT3904 NXP HEAD_PHONE_POP E B C Q1503 MMBT3904 NXP HEAD_PHONE_POP E B C Q1505 MMBT3904 NXP HEAD_PHONE_POP E B C Q1504 MMBT3904 NXP HEAD_PHONE_POP E B C Q1501 MMBT3906 NXP HEAD_P...

Page 21: ...C_SEL C3710 0 1uF 16V LNA_CTRL_1 C3713 18pF 50V C3701 0 1uF 16V DEMOD_SDA C3717 0 1uF 16V C3711 18pF 50V R3741 1 8K TU_IIC_ATSC_1 8K IF_N_MSTAR R3766 1 C3741 1 10uF 10V CAP_X7R_MP C3741 10uF 10V CAP_10uF_X5R 85C R3761 1 10 HALF_NIM IF_FILTER R3760 1 10 HALF_NIM IF_FILTER R3714 0 NON_ASIA R3715 0 NON_ASIA TU3702 TDSH G501D B TUNER_ISOLATOR_DVB_1INPUT_H 5 B1 3 3V 11 DIF N 2 RESET 10 DIF P 4 SDA 1 NC...

Page 22: ...6 0 1uF CVBS_TEST C1707 0 1uF CVBS_TEST 4 7uF C1708 CVBS_TEST JK1701 PPJ248 01 COMP_AV1 2 6D GN C SPRING 7D GN E LUG 4D GN CONTACT 5E BL C SPRING 8F RD1 E LUG S 6F RD1 C SPRING 4F RD1 CONTACT 5G WH1 C SPRING 4H RD2 CONTACT 6H RD2 C SPRING 7H RD2 E LUG 7A YL E LUG 6A YL C SPRING 4A YL CONTACT 5B WH2 C SPRING 4C RD3 CONTACT 6C RD3 C SPRING 7C RD3 E LUG D1711 COMP_Y_ZENER_ROHM D1703 COMP_Pr_ZENER_ROH...

Page 23: ... C3428 50V 24V_AMP_3 URSA_SDA C3420 1000pF 50V AUD_SCK C3452 390pF 50V C3406 1000pF 50V R3402 10K 0 1uF C3458 50V AUD_MASTER_CLK C3413 0 1uF 16V R3427 5 1K AUD_LRCK L3407 SP 7850_10 10uH AMP_RESET 0 1uF C3488 50V 24V_AMP_1 R3452 12 24V_AMP_2 C3506 390pF 50V 0 1uF C3486 50V R3444 10K R3438 100 OPT 0 1uF C3485 50V C3491 10uF 35V R3450 12 R3442 100 C3465 0 1uF 16V OPT 3 3V_Normal AUD_LRCK L3411 SP 78...

Page 24: ...HAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 2012 06 20 MSTAR DEBUG_4PIN 39 NC4_S7LRM RGB_DDC_SCL RGB_DDC_SDA P3900 12505WS 04A00 MSTAR_DEBUG_4P 1 2 3 4 5 JP_GND2 JP_GND3 JP_GND4 JP_GND1 MSTART DEBUG_4PIN Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 25: ... THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC RS232C_4P_OS 2012 06 20 40 NC4_S7LRM PM_RXD 3 5V_ST R4001 100 R4000 100 P4000 12507WS 04L RS232C_DEBUG_4P 1 VCC 2 PM_RXD 3 GND 4 RM_TXD 5 GND PM_TXD RS 232C Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 26: ... 16V CONTROL_FILTER L601 BLM18PG121SN1D CONTROL_FILTER P600 12507WR 08L IR_8PIN 1 2 3 4 5 6 7 8 9 KEY1 R602 10K 1 C605 18pF 50V OPT R607 3 3K 3 5V_ST R611 0 CONTROL_NO_FILTER R601 100 R605 100 DIGITAL_EYE R604 100 DIGITAL_EYE C606 18pF 50V OPT KEY2 C602 0 1uF 16V IR L602 BLM18PG121SN1D CONTROL_FILTER SENSOR_SDA C603 1000pF 50V R603 10K 1 3 5V_ST R610 1 8K LED_R BUZZ L600 BLM18PG121SN1D R612 0 CONT...

Page 27: ...TA 4 GPIO122 AA15 PCMDATA 5 GPIO121 AE21 PCMDATA 6 GPIO120 AB21 PCMDATA 7 GPIO119 Y15 PCMADR 0 GPIO128 W20 PCMADR 1 GPIO127 V20 PCMADR 2 GPIO125 W22 PCMADR 3 GPIO124 AB18 PCMADR 4 GPIO102 AA20 PCMADR 5 GPIO104 AA21 PCMADR 6 GPIO105 Y19 PCMADR 7 GPIO106 AB17 PCMADR 8 GPIO111 Y16 PCMADR 9 GPIO113 AB19 PCMADR 10 GPIO117 AB20 PCMADR 11 GPIO115 AA16 PCMADR 12 GPIO107 AA19 PCMADR 13 GPIO110 AC21 PCMADR ...

Page 28: ...WS GPIO153 C10 AUL0 AB9 AUR0 AA11 AUL1 Y9 AUR1 AA9 AUL2 AA7 AUR2 AB8 AUL3 Y8 AUR3 Y10 AUL4 AC7 AUR4 AD7 GPIO_PM 13 GPIO19 W6 AUOUTL2 V6 AVDD5V_MHL V4 GPIO_PM 14 GPIO20 Y7 AUOUTR2 W5 GPIO_PM 15 GPIO21 U5 AUVRM AD5 AUVAG AE5 AUVRP AC6 EARPHONE_OUTL AA6 EARPHONE_OUTR AB6 RP GPIO63 C6 TP GPIO60 C5 RN GPIO66 A6 LED1 GPIO59 C4 TN GPIO62 B5 GPIO61 C3 GPIO64 A3 GPIO65 B3 LED0 GPIO58 B4 IRIN GPIO4 N4 ARC0 ...

Page 29: ...0 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 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREFCA M8 VREFDQ 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...

Page 30: ... 7 HOLD IO3 8 VCC R5504 33 SPI_SCK R5503 4 7K OPT SPI_SDO SPI_SDI R5501 10K OPT 3 5V_ST SPI_CS R5502 0 3 5V_ST IC1300 3 MX25L8006EM2I 12G SFLASH_OS_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC IC1300 1 MX25L6406EM2I 12G SFLASH_NON_OS_MX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC IC1300 W25Q64FVSSIG SFLASH_NON_OS_WINBOND 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7...

Page 31: ...101 1 UBW2012 121F HD_BEAD_CSG RXB1 RXB0 RXA4 RXA1 Pol change RXB4 RXACK RXBCK RXA0 RXA2 LVDS EU RXA2 RXBCK RXB4 RXA3 RXA1 RXB2 RXB3 RXA3 RXBCK RXACK RXA2 RXA1 RXB1 RXB3 RXA3 RXA2 RXA0 RXA4 Shift RXBCK RXB2 RXA4 51Pin LVDS Connector For FHD 60Hz RXACK RXA3 RXACK RXB3 RXA3 RXA1 RXB0 RXA0 RXACK RXB3 LVDS_SEL RXA4 RXB3 RXA4 RXA2 RXA2 RXA1 RXB2 Pol change RXB4 RXB1 RXA4 RXACK RXB3 RXB0 RXB3 RXBCK RXB4...

Page 32: ......

Page 33: ... diagram A7 10 11 Check Link Cable LVDS reconnection condition A8 A9 12 Adjustment Test pattern ADJ Key A10 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A8 A9 15 Adjustment Test pattern ADJ Key A10 16 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 17 Exchange T Co...

Page 34: ...ways 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 14 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A6 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 Cab...

Page 35: ... 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 14 LCD TV Error symptom 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...eck Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up 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 N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 3 14 ...

Page 37: ...nt maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 4 14 LCD TV Error symptom Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Normal setting Contact with signal distributor or broadcaster Cable or Air Close N Check Tuner soldering Replace Main ...

Page 38: ...evice 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 A7 N Y End Replace module Request repair for external device cable Color error Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LCD TV Error symptom 2013 01 09 Copyright 2013 LG Electronics Inc All r...

Page 39: ...necting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component error HDMI Connect other external device and cable Check normal operation of External Input Component and HDMI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y Check S W ...

Page 40: ...voltage of each output of Power B D N Y Normal voltage Replace Main B D 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 A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LCD TV Error symptom Stand By Red Close 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE...

Page 41: ...planation 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_SWDOWN Power off by S W Download POWEROFF_UNKNOWN Power off by unknown status except li...

Page 42: ...d repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A15 A16 Disconnection Established date Revised date 9 14 LCD TV Error symptom Standard Repair Process 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ...ect 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 Establis...

Page 44: ...erry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A17 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 A17 Replace Main B D Y A17 Standard Repair Process Established date Revised date 11 14 LCD TV Error symptom 201...

Page 45: ...l 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 12 14 LCD TV Error symptom Standard Repair Process 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ... 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 noise mechanical noise Established date Revised date 13 14 LCD T...

Page 47: ...mote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 14 14 LCD TV Error symptom Standard Repair Process 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...F MODE checking method A14 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A15 29 Voltage and speaker checking method when there is no audio A16 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A16 31 D Function error_ No response in remote controller key error Remote controller operation checking method...

Page 49: ... Video error_No video Normal audio ALL MODELS A1 Established date Revised date Error symptom Content LCD TV Power On disjoint back case check lighting at 2 points 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...ised date Error symptom Content LCD TV Measure DC 93 2 118 5V applying to Module from Power Board Output 93 2 118 5V from Power Board supply to Module Check Pin contacting statement and connection statement ALL MODELS 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ...k 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 2013 01 09 Copyright 2013 LG Ele...

Page 52: ...r symptom Content LCD TV Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common 1 Power on 2 DRV ON 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 N C 17 GND 18 GND Edge LED 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ... Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A5 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ... 1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A6 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...residual image light spot As the part connecting to the external input AV COMP HDMI check the screen condition by signal A7 Established date Revised date Error symptom Content LCD TV ALL MODELS 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...Technical Manual Check and replace Link Cable LVDS and contact condition A Video error_Color error ALL MODELS A8 A9 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...ns 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 A10 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...ken 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 rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ...ppendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ... 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 rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...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 rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ... Power error _No power A11 Established date Revised date Error symptom Content LCD TV ST BY condition Red Front LED control Menu Option Standby light ON 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...r symptom Content LCD TV Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common 1 Power on 2 DRV ON 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 N C 17 GND 18 GND Edge LED 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ...mptom Content LCD TV Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common 1 Power on 2 DRV ON 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 N C 17 GND 18 GND Edge LED 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ... Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A14 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...Speaker LG Sound Sync TV Speaker will not work Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A15 Established date Revised date Error symptom Content LCD TV 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 68: ...aker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A16 Established date Revised date Error symptom Content LCD TV Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common 1 Power on 2 DRV ON 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 ...

Page 69: ... it does not move at all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A17 Established date Revised date Error symptom Content LCD TV P600 1 GND 2 KEY1 3 KEY2 4 3 5V_ST 5 GND 6 LED_R BUZZ 7 IR 8 GND 9 GND 2013 01 09 Copyright 2013 LG Electronics Inc All rights reserved Only for tra...

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