LG 43LF6300 Page 75 Service Manual Download

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Standard Repair Process Detail Technical Manual

connection diagram (1)

A. Video error _Vertical/Horizontal bar, residual

image, light spot

As the part connecting to the external input, check the
screen condition by signal

Established

date

Revised

date

Error symptom

Content

LGE Internal Use Only

Summary of Contents for 43LF6300

Page 1: ...FL68660904 1605 REV02 CHASSIS LA51H MODEL 65LF6300 6350 6390 MODEL 65LF6300 6350 6390 UA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL 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 13 EXPLODED VIEW 22 TROUBLE SHOOTING APPENDIX ...

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: ...condition Each part is tested as below without special notice 1 Temperature 20 ºC 5 ºC 2 Relative Humidity 65 10 3 Power Voltage Standard input voltage 100 240V 50 60Hz 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 prior to the adjustment 3 Test method 1 Performanc...

Page 7: ... UA LC490EUE FHM1 FHD 49INCH 1920X1080 300CD COLOR 68 16 9 1200 1 60Hz Inverter N LED 2D With T con 51 1W 47W 4 1W 8Bit 10000K 178 178 GTGBW 9ms LVDS 2ch Carbon Titan LG Display Co Ltd LGD LC490EUE FHM1 P N EAJ63110601 49LF6300 UA LC550EUE FHM1 FHD 55 0INCH 1920X1080 330CD COLOR 68 16 9 1200 1 60Hz Inverter N LED 2D With T con 62 0W 58 4W 3 6W 8Bit 10000K 178 178 GTGBW 9ms LVDS 2ch Carbon Titan LG...

Page 8: ... 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 33 75 60 00 74 25 HDTV 1080I 8 1920 1080 33 72 59 94 74 176 HDTV 1080I 9 1920 1080 67 50 60 148 50 HDTV 1080P 10 1920 1080 67 432 59 94 148 352 HDTV 1080P 5 2 Component 3D input Y CB PB CR PR No Resolution H freq kHz V freq kHz Pixel clock 3D input proposed mode Proposed 1 1280 720 45 00 60 00 74 25 2D to 3D Side by Side Top and Bottom HDTV 720P...

Page 9: ... WXGA X 8 1280 1024 63 981 60 020 108 00 VESA SXGA O 9 1920 1080 67 5 60 148 5 HDTV 1080P O DTV 1 640 480 31 469 59 94 25 175 SDTV 480P 2 640 480 31 5 60 25 200 SDTV 480P 3 720 480 31 50 60 27 027 SDTV 480P 4 720 480 31 469 59 94 27 00 SDTV 480P 5 1280 720 45 00 60 00 74 25 HDTV 720P 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 33 75 60 00 74 25 HDTV 1080I 8 1920 1080 33 72 59 94 74 176 HDT...

Page 10: ... 29 97 30 00 74 175 74 25 S S T B S S Full 67 50 30 00 148 5 F P L A 60 00 S S T B 5 5 3D HDMI PC Input No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1 1024 768 48 363 60 004 65 000 2D to 3D S S T B 2 1360 768 47 712 60 015 85 500 3 1920 1080 67 50 60 00 148 50 2D to 3D S S T B C B R I C I 5 6 HDMI Input 1 3 No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input pr...

Page 11: ...ide Top and Bottom HDTV 1080P 5 7 2 3D Manual Movie No Resolution H freq kHz V freq kHz 3D input proposed mode 1 Under 704 480 2D to 3D 2 Over 704 480i 2D to 3D Side by side Top and Bottom 3 Over 704 480p 50 60 2D to 3D Side by side Top and Bottom Checkerboard Row Interleaving Column Interleaving Frame Sequential 4 Over 704 480p Others 2D to 3D Side by side Top and Bottom Checkerboard Row Interlea...

Page 12: ... MHz Proposed 3D input proposed mode 1 1280 720 45 000 60 74 25 HDTV 720P 2D to 3D Side by Side Top Bottom 2 1920 1080 33 75 60 74 25 HDTV 1080I 2D to 3D Side by Side Top Bottom 5 9 2D to 3D Conversion RF 3D Input DTV No INPUT Freq Resolution 1 Digital TV Analog TV 2D Support freq 2D Support resolution 2 HDMI 2D Support freq 2D Support resolution 3 Component 2D Support freq 2D Support resolution 4...

Page 13: ...tern 09ch there can some afterimage in the black level area 3 Adjustment items 3 1 Main PCBA Adjustments 1 ADC adjustment OTP Component 2 EDID downloads for HDMI 3 2 Final assembly adjustment 1 White Balance adjustment 2 RS 232C functionality check 3 Factory Option setting per destination 4 Shipment mode setting In Stop 5 GND and HI POT test 3 3 Appendix 1 Tool option menu USB Download S W Update ...

Page 14: ... realization of Plug and Play 4 4 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjust remocon 4 4 3 EDID DATA 4 4 3 1 2D_8bit_PCM US _ xvYCC off HDMI EDID 2D_8bit_PCM US _xvYCC off Reference HDMI1 HDMI3 In the data of EDID bellows may be different by S W or Input mode ⓐ Product ID HEX EDID Table DDC Function 0001 0100 Analog 0001 0100 Digit...

Page 15: ... 67 03 0C 00 30 00 B8 2D 4 4 3 3 3D_8bit_PCM US _ xvYCC off HDMI EDID 3D_8bit_PCM US _xvYCC off Reference HDMI1 HDMI4 In the data of EDID bellows may be different by S W or Input mode ⓐ Product ID HEX EDID Table DDC Function 0001 0100 Analog 0001 0100 Digital ⓑ Serial No Controlled on production line ⓒ Month Year Controlled on production line ex Monthly 01 01 Year 2015 19 ⓓ Model Name Hex LGTV Cha...

Page 16: ...Objective How it works 1 Objective To reduce each Panel s W B deviation 2 How it works When R G B gain in the OSD is at 192 it means the panel is at its Full Dynamic Range In order to prevent saturation of Full Dynamic range and data one of R G B is fixed at 192 and the other two is lowered to find the desired value 3 Adj condition normal temperature Surrounding Temperature 25 5 C Warm up time Abo...

Page 17: ...ustment 1 Set TV in Adj mode using POWER ON 2 Zero Calibrate the probe of Color Analyzer then place it on the center of LCD module within 10cm of the surface 3 Press ADJ key EZ adjust using adj R C à 9 White Balance then press the cursor to the right KEY When KEY is pressed 206 Gray internal pattern will be displayed 4 Adjust Cool modes i Fix the one of R G B gain to 192 default data and decrease ...

Page 18: ...296 317 336 6 36 49 274 274 289 293 316 333 7 50 79 273 272 288 291 315 331 8 80 119 272 271 287 290 314 330 9 Over 120 271 270 286 289 313 329 3 O S Module AUO INX Sharp CSOT BOE cool med warm x y x y x y spec 271 270 286 289 313 329 target 278 280 293 299 320 339 5 2 Option selection per country 5 2 1 Overview 1 Tool option selection is only done for models in Non USA North America due to rating...

Page 19: ...ses 3D mode without 3D glasses Fig 2 Fig 3 OK in 3D mode without 3D glasses NG in 3D mode without 3D glasses 5 5 3 3D Inner pattern 1 Using RS232 Command Command Set ACK Transmission A I Set ID 72 Cr O K x or N G x 2 It support internal 3D pattern without MASTER equipment Except that one other method is same when use the MASTER equipment 5 6 HDMI ARC Function Inspection 5 6 1 Test equipment Optic ...

Page 20: ... No Item Min Typ Max Unit Remark 1 Audio practical max Output L R Distor tion 10 max Output 9 0 8 5 10 0 8 9 12 0 9 9 W Vrms 1 Measurement condition EQ AVL Clear Voice Off 2 Speaker 8Ω Impedance ALL MODEL 7 GND and HI POT Test 7 1 GND HI POT auto check preparation 1 Check the POWER CABLE and SIGNAL CABE insertion condition 7 2 GND HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD ...

Page 21: ...rounding area surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 3 Aging time After Aging Start Keep the Power ON status during 5 Minutes In case of LCD Back light on should be checked using no signal or Full white pattern 10 1 2 Equipment 1 Color...

Page 22: ...cteristics 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 Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE 900 200 400 800 540 810 910 521 530 410 820 500 570 121 120 LV...

Page 23: ...5 Engineering guide Applicable Model Mid end 40 43 49 55 60 65LF6300 42 47 50 55 60LF6500 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 24: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 25: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 27: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 28: ... 83 Standard of 2015 Model Name Description of Tool Options Model naming and Tool option Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 29: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 32: ... sensing Audio AMP 10W 10W LVDS or EPI Wafer 40 43 49 55LF6300 1 Key IR Front Spk To module 4 Chassis LA51H PCB P No EAX66202603 2 WIFI BT 5 PSU WiFi BT Magic Remocon receiver 5 Tuner Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 33: ...sensing Audio AMP 12W 12W LVDS or EPI Wafer 1 Key IR Front Spk To module 4 2 WIFI BT 5 PSU WiFi BT Magic Remocon receiver 5 Tuner 60 65LF6300 60LF6500 Chassis LA51H PCB P No EAX66202603 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 34: ... sensing Audio AMP 12W 12W LVDS or EPI Wafer 42 47 50 55LF6500 1 Key IR Front Spk To module 4 2 WIFI BT 5 PSU WiFi BT Magic Remocon receiver 5 Tuner Chassis LA51H PCB P No EAX66202603 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...KHz I2S Out I2C 1 EPI I2C 2 LVDS USB I2C 5 H P Line Out AV COMP D Demod I2C 4 OCP 1 5A OCP 1 5A ARC R E A R S I D E S I D E R E A R H AMP TI CVBS YPbPr SPDIF OUT ETHERNET I2C 3 LOCAL DIMMING BLUTOOTH IR KEY EYE PM IC WIFI SUB ASSY I2C 2 IR KEY USB_WIFI BT IR Bla Ready Tuner I2C 6 LAN PHY OCP 1A MHL X_TAL 25MHz I2C CVBS SIF Tuner LNB 1 M14 Block Diagram Copyright ⓒ 2016 LG Electronics Inc All right...

Page 37: ... IC5600 NTP7515 AMP I2C_SDA0 I2C_SCL0 100 Ω IC103 NVRAM 3 3KΩ 3 3V_NORMAL I2C_SDA4 I2C_SCL4 33Ω I2C_SDA5 I2C_SCL5 TUNER Demod 3 3KΩ 3 3V_NORMAL 33Ω IC101 M14 2 M14 I2C Block Diagram IR KEY EYE 100Ω 3 5V_ST 3 3KΩ IC3000 Renesas MICOM EYE_I2C_SDA EYE_I2C_SCL Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...INP AL28 DMD_ADC_INN AK29 DMD_ADC_SIF AL27 CVBS_IN1 AM29 IFAGC IC2_SCL6 IC2_SDA6 FE_DEMOD1_TS_ERROR FE_DEMOD1_TS_SYNC FE_DEMOD1_TS_VAL FE_DEMOD1_TS_CLK S2_RESET LNB_TX I2C_SCL4 I2C_SDA4 3 3V_TU 3 3K Ω 1 1_D_Demod 3 3V_TU 3 3V_D_Demod IF_P IF_N TUNER_SIF for T2 C S TU_CVBS for T2 C S IF_AGC 33Ω M_DIF_IFAGC 3 LPF LPF 6dB TR AMP AK27 DMD_DAC_OUT AL27 CVBS_IN1 AK29 AAD_ADC_OUT AL30 DMD_SIF_OUT SoC_CVB...

Page 40: ..._S0Y COMP2_Pb__IN_SOC PB2_IN PR2_IN AUDA_L_CH3_IN COMP2_PR_IN_SOC AUAD_L_CH3_IN AUDA_R_CH3_IN AUAD_R_CH3_IN TU_CVBS TUNER_SIF IF_P N CVBS_IN2 SC1_SID SC1_FB PB1_IN Y1_IN SOY1_IN PR1_IN AUDA_L_CH2_IN AUDA_R_CH2_IN CVBS_IN1 DMD_ADC_INP DMD_ADC_INN TU_CVBS_SOC TUNER_SIF ADC_I_INP ADC_I_INN AAD_ADC SIF Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE In...

Page 41: ...UNER_SIF DAC_SCK DAC_LRCH AUD_LRCK AUD_SCK DAC_LRCK SDA0 SCL0 I2C_SDA1 I2C_SCL1 IC3000 MICOM AMP_MUTE AUDA_L_CH2_IN AUDA_R_CH2_IN AUDA_L_CH3_IN AUDA_R_CH3_IN JK3802 AUD_MASTER_CLK AUDCLK_OUT GPIO21 AMP_RESET_N IC6800 MAX3232CDR RS232 JK3401 JK3403 LPF SPEAKER_L SPEAKER_R AAD_ADC SIF RIN1 DOUT1 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Interna...

Page 42: ...2 DDC_SDA_2 TMDS Link 8bits SPDIF_OUT_A RC DDC_SDA_1 X tal 32 768kHz TMDS Link 8bits TMDS Link 8bits WOL_CT L DDC_SCL_4 DDC_SDA_4 TMDS Link or MHL Link HDMI_HPD HDMI_HPD HDMI_HPD Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ...SWP CTRLP SWN CTRLN VGH VGL 6 6 8 6 8 I2C 4 4 4 VGH_ODD EVEN VST GIP_RST 4 6 6 CLK1 CLK6 6 6 GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 2CH OP AMP PVCOM LEFT RIGHT VCOM 1 2 Top Bottom H_VDD VCOMRFB VCOMLFB VGH_ODD EVEN VST GIP_RST CLK1 CLK6 GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 PMIC L S TPS65175 EPI_LOCK4 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal U...

Page 44: ...B_OCD2 WIFI BT_DM WIFI BT_DP EYY_SCL EYE_SDA USB2_0_DP0 USB2_0_DM0 USB_DP3 5V_USB_3 USB_CTL3 USB_OCD3 USB3 USB_DM3 HUB_VBUS_CTRL0 IC 4500 IC 4306 USB3_DP1 USB3_DM1 EB_CS3 EB_CS2 USB2_1_DP0 USB2_1_DM0 EB_CS1 EB_CS0 WIFI BT IR KEY EYE Micom LED IR KEY1 KEY2 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...es 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of set and connection of sub assy s 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ... LPB 12Pin cable Main Module LVDS Cable Module B light Cable 18Pin IR key WIFI BT Cable SPK Cable PCBs Cables 1 2 3 1 2 3 4 43LF6300 5 4 4 WIFI BT Assy 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub ass ys 7 New sub assy s Instruction of new sub assy s How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...5Y WIFI BT built in assy Magic Remote control Table of Contents 1 System 2 Block diagram 3 Paring method Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...uccess F W version BD_ADDR to the receiver The receiver sends the pairing success packet to TV directly F W version and BD_ADDR packets are just saved on the receiver The receiver sends F W version or BD_ADDR packet to TV when it is required Motion Data Transmission Period 7 5msec Motion Data gyro accelerometer Voice Data Transmission Period 10msec Voice sampling 16khz 16bit Copyright ⓒ 2016 LG El...

Page 50: ...the remote should blink LED for some time and TV send pairing success packet back to TV When remote try to unpairing it doesn t care about state of receiver stand alone RF Unpairing Press HOME button and BACK button at the same time for 5 sec When remote try to unpairing it doesn t care about state of receiver stand alone After unpairing all pairing information should be erased After unpairing LED...

Page 51: ... 37 4MHz 3 3V 1 2V Switch RTC6603 Antenna 2 4G 5G Antenna 2 4G 5G RX TX RX TX Block diagram 54 34 VCC Switch RTC6608O BT_REG_ON 3DG WL_HOST_Wake BT TX Antenna 2 4G TX RFLPF1608 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ... 4 Main PCBs 5 Block Diagrams IIC Map 6 Structure of TV set and connection of sub ass ys 7 New sub ass ys Instruction of new sub ass ys How to use tool Download 8 Repair guide Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...ff when on off while viewing power auto on off 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error No response in remote controller key error recording error memory error 11 11 External device recognition error 12 12 E Noise Circuit noise mechanical noise 13 13 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulletin in...

Page 55: ...10 Tuner Checking 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 TV connection diagram A8 14 Check Link Cable LVDS reconnection condition 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 17 Exchange T Con Boa...

Page 56: ... End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 13 Error symptom A Video error No video Normal audio A4 A1 A28 A7 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...

Page 57: ...lace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 13 Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ... Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close Menu Setup Booster 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 A7 Standard Repair Proc...

Page 59: ...op Box Different maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A7 Standard Repair Process Established date Revised date 3 13 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 B D Err...

Page 60: ...external device and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A8 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 Standard Repair Process Established date Revised date 4 13 Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserve...

Page 61: ...y connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B...

Page 62: ...re 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 9 7V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A4 Standard Repair Process Established date Revised date 6 13 Stand By On Operating Off Close Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Inte...

Page 63: ...L POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROFF_UNKNOWN Power ...

Page 64: ...oard and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 Standard Repair Process Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ...put Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 13V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End ...

Page 66: ...aterry of R C Check Repair Cable connection Connector solder Normal operating Check B 13V On Main B D A27 Normal Voltage Close N N Check 13v operating or 9 7 st by on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A27 Replace Main B D Y A27 Standard Repair Process Established date Revised date 10 13 E...

Page 67: ...external device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 11 13 Standard Repair Process Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 68: ... proceed as shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 12 ...

Page 69: ...ote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 13 13 Standard Repair Process A28 Error symptom Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ... BOARD PIN voltage checking method A18 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 error Remote controller operation che...

Page 71: ...ptom Content Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 9 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 ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 72: ...ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 DRV ON OFF 12 PDIM 1 1 PWR ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 DRV ON OFF 12 PDIM 1 13 GND 14 GND 15 GND 16 V SYNC 17 SPI SIN 18 SPI SCLK Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use...

Page 73: ...d Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 74: ...stop 1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...ontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A8 Established date Revised date ALL MODELS Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...oltage from power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ... patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A12 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...older defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange T Con Board 1 A 1 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ... Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 A 2 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 80: ...ix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 81: ...s damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module A 4 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ... 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 A 5 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ...front display LED B Power error _No power A17 Established date Revised date ST BY condition On Power ON condition Off Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...Pin map local dimming Model 1 PWR ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 DRV ON OFF 12 PDIM 1 1 PWR ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 DRV ON OFF 12 PDIM 1 13 GND 14 GND 15 GND 16 V SYNC 17 SPI SIN 18 SPI SCLK Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and...

Page 85: ... item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 86: ...r Or Other Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A24 Established date Revised date Error symptom Content Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...re 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 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 A25 Established date Revised date Error symp...

Page 88: ...Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A27 Established date Revised date P4000 1 GND 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 15 IR 16 3 5V_ST 17 LED_R 18 GND Error symptom Content Copyright ⓒ 2016 LG Electronics Inc ...

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