LG 65NANO863NA Service Manual Download Page 64

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Checking method

1. Press the Setting button on the remote control.
2. Select the Sound function of the Menu.
3. Select the Sound Out.
4. Select TV Speaker.

Standard Repair Process Detail Technical Manual

Checking method in menu when there is no audio

C. Audio error_No audio/Normal video

A12

Established

date

Revised

date

Error

symptom

Content

A12

Only for training and service purposes.

Summary of Contents for 65NANO863NA

Page 1: ...g and service purposes Any reproduction duplication distribution including by way of email facsimile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes with...

Page 2: ... reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 SOFTWARE UPDATE 10 BLOCK DIAGRAM 12 EXPLODED VIEW 13 ASSEMBLY DISASSEMBLY GUIDE 14 TROUBLE SHOOTING GUIDE APPENDIX ...

Page 3: ...he 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 metallic parts such as ...

Page 4: ...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 electrostati...

Page 5: ...oints 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 replaced component...

Page 6: ...DVB T2 11 countries UK Ireland Sweden Denmark Finland Norway Ukraine Kazakhstan Russia Italy Croatia Serbia DTV MPEG2 4 DVB C 37 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Moroco Ireland Latvia Estonia Lithuania Poland Portugal Ro mania Albania Bosnia Serbia Slovakia Beralus UK Sweden Denmark Fi...

Page 7: ...5 6 7 8 DVB T2 Guard Interval Bitrate_Mbit s 1 4 1 8 1 16 1 32 1 128 19 128 19 256 Modulation Code Rate QPSK 1 2 2 5 2 3 3 4 5 6 16 QAM 1 2 2 5 2 3 3 4 5 6 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 DVB C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM DVB S S2 Symbolrate DVB S2 8PSK QPSK 2 45Msymbol s DVB S QPSK 2 45Msymbol s Viterbi DVB S mode 1 ...

Page 8: ... 60 00 148 50 HDTV 1080P No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed Remarks 1 640 480 31 46 59 94 25 12 SDTV 480P 2 640 480 31 5 60 25 12 SDTV 480P 3 720 480 31 47 59 94 27 SDTV 480P 4 720 480 31 5 60 27 02 SDTV 480P 5 720 576 31 25 50 27 SDTV 576P 6 1280 720 44 96 59 94 74 17 HDTV 720P 7 1280 720 45 60 74 25 HDTV 720P 8 1280 720 37 5 50 74 25 HDTV 720P 9 1920 1080 28 12 50 74 25...

Page 9: ...188 UDTV 2160P 33 4096 2160 53 95 23 98 296 7 UDTV 2160P Not Support for FHD 34 4096 2160 54 24 297 UDTV 2160P 35 4096 2160 56 25 25 297 UDTV 2160P 36 4096 2160 61 43 29 97 296 7 UDTV 2160P 37 4096 2160 67 5 30 297 UDTV 2160P 38 4096 2160 112 5 50 594 UDTV 2160P 39 4096 2160 134 86 59 94 593 4 UDTV 2160P 40 4096 2160 135 60 594 UDTV 2160P 41 4096 2160 225 100 1188 UDTV 2160P 4K120 model K6Hp HDMI ...

Page 10: ...V 2160P 12 3840 2160 53 95 23 98 296 7 UDTV 2160P 13 3840 2160 54 24 297 UDTV 2160P 14 3840 2160 56 25 25 297 UDTV 2160P 15 3840 2160 61 43 29 97 296 7 UDTV 2160P 16 3840 2160 67 5 30 297 UDTV 2160P 17 3840 2160 112 5 50 594 UDTV 2160P 18 3840 2160 134 86 59 94 593 4 UDTV 2160P 19 3840 2160 135 60 594 UDTV 2160P 20 4096 2160 53 95 23 98 296 7 UDTV 2160P 21 4096 2160 54 24 297 UDTV 2160P 22 4096 21...

Page 11: ... About This TV page for update 5 TV is updating 6 After finished the update below Pop up appear 7 Click Yes TV will be DC OFF ON 8 After TV turned on Check the updated SW Version and Tool Option 2 NSU DOWNLOAD This Function is needed to connect to the internet 1 Menu All Settings Support Software Update 2 Click CHEK FOR UPDATES system check newest version 3 Click DOWNLOAD AND INSTALL 4 TV is updat...

Page 12: ... S S2 Rear YPbPr AV SPDIF OUT ETHERNET IR KEY WIFI BT Combo USB_WIFI CVBS HDMI1 HDMI 2 0 HDMI3 ARC eARC HDMI 2 1 USB2 2 0 RS232C HP HDMI2 HDMI 2 0 Vx1 EPI CEDS OCP OCP USB3_0 USB2_2 PHY2_RX0N PHY1_RX0N I2C 2 SIF HDMI4 HDMI 2 1 PHY0_RX0N PMIC Sub PMIC COMP AV I2C 2 USB1 2 0 OCP USB2_1 Rear Depend on Model I_P I_N Q_P Q_N I2C 1 H P AMP To Panel EPI CEDS Side Side Rear To Panel Vx1 CI Slot P_TS_OUT P...

Page 13: ...y electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the 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 ...

Page 14: ...e purposes ASSEMBLY DISASSEMBLY GUIDE 1 DISASSEMBLY GUIDE BACK COVER 1 Lay the TV Set on a flat pad and Disassemble Stand Screw 4 EA 2 Disassemble B C Screw 3 Prepare B C remove after Checking the Module Holder Position Screw 4ea Screw 12 point Holder 65 55 8point 49 6point 65 55 49 ...

Page 15: ... Plastic scraper into the gap of guide panel and back cover and move upward We recommend disassembly from the left side 5 Right Side Disassemble B C Using Plastic scraper Put the Plastic scraper into the gap of guide panel and back cover and move upward 6 Hold the center of the back cover as shown in the picture and slide it upwards Plastic scraper ...

Page 16: ...he B C on the Module Assy and push the Holder Position 2 Check the Upper Left Right Side gap to make sure the the holder is assembled correctly If the Holder is not assembled B C is opened and easily recognized 3 Assemble the Screw of B C 4 Assemble Stand Screw 4 EA Screw 12 point Holder 65 55 8 point 49 6point 65 55 49 Screw 4ea ...

Page 17: ... Inc All rights reserved Only for training and service purposes 3 DISASSEMBLY GUIDE SET 1 Remove all screw of bottom bracket and IR Wifi Cable at P4000 2 Bottom Bracket with IR Wifi BT Assy 3 Remove all sort of cable 2 Screw point ...

Page 19: ...hts reserved Only for training and service purposes ASSEMBLY DISASSEMBLY GUIDE MODULE 1 Disassemble of Cover Shield 2 Disassemble of Guide panel screw UP RIGHT LEFT Total 18 EA Disassemble the Screws Disassemble the source PCB from the guide ...

Page 20: ...rights reserved Only for training and service purposes 3 Disassemble of Case Top screw 4 Disassemble of screw 4 EA 5 Disassemble Hooks UP 2 EA Left Right each 1 EA Screw 9 EA About 465mm About 465mm About 25mm About 25mm Disassemble Hooks ...

Page 21: ...ctronics Inc All rights reserved Only for training and service purposes 6 Panel and Guide Panel disassembly using adsorber 7 Removal of Sheets 8 Removal of LGP 9 Removal of Reflector 10 Removal of LED Housing Assy LED LED ...

Page 23: ...uto on off 7 8 Off when on off while viewing power auto on off 8 9 C Audio error No audio Normal video 9 10 Wrecked audio discontinuation noise 10 11 D Function error Remote control Local switch checking 11 12 MR20 operating checking 12 13 Wifi operating checking 13 14 External device recognition error 14 15 E Noise Circuit noise mechanical noise 15 16 F Exterior error Exterior defect 16 First of ...

Page 24: ...lace Module N Repair Power Board or parts End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution A9 A1 A9 A4 A2 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D Each Cable for Panel Speaker Cable IR B D Cable Error Check LED Driver BD by LED indicator...

Page 25: ...udio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A9 Established date Revised date Error symptom 2 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 26: ... Main B D Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD Advanced Channels Channel Tuning Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N A4 Standard Repair Process Established date Revised date ...

Page 27: ...r Check external device and cable Y External device Cable normal HDMI error Check external device and cable Replace Main T con B D Replace Main T con B D N N A Video error Color error A6 N Y End Replace module Request repair for external device cable Color error A7 Standard Repair Process Established date Revised date Error symptom 4 Check Test pattern A20 Copyright 2020 LG Electronics Inc All rig...

Page 28: ...HDMI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main T con B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component 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...

Page 29: ...sure 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 Normal voltage Replace Power B D Y A8 A9 A9 A9 Standard Repair Process Established date Revised date Error symptom 6 Stand By Red or Turn On Operating Turn Off Close Copyright 2020 LG Electronics Inc All rights reserved Only for training and service pur...

Page 30: ...place Main B D CPU Abnormal If Power Off mode is not displayed Check Power B D voltage Y N Replace Main B D Normal voltage Replace Power B D Replace Power B D N Y Normal End Caution Check and fix exterior of Power B D Part A11 A9 Established date Revised date Error symptom Standard Repair Process 7 Abnormal 1 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purpo...

Page 31: ...Check fail after multi power on Check Change Power B D CPUABNORMAL If the CPU attempts to reset in case of abnormal operation and Shut Down in case of failure Check Change Main B D NO POLING Power off when receiving no ack RESULT TV power off on Reboot CONDITION There is no I2C response from CPU for 15 seconds Check Change Main B D CPUCMD Power off by main SoC command Check Change Main B D INV_ERR...

Page 32: ...ce Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A12 A13 A9 Disconnection Established date Revised date Error symptom Standard Repair Process 9 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 33: ...External Input Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V Replace Main B D In case of External Input signal error Check and fix external device Replace Main...

Page 34: ...m Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A14 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 A9 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A14 Replace Main B D Y A14 Standard Repair Process Established date Revised date Error sympt...

Page 35: ... Revised date Error symptom Replace MR20 Turn off on the set and press the wheel Press the back key about 5sec If you conduct the loop at 3times change the MR20 Y Check the INSTART menu RF Receiver ver is 00 00 Y Check Repair RF assy connection N Down load the Firmware INSTART MENU 14 RF Remote control Test 3 Firmware download Y RF Receiver ver is 00 00 N Close A15 A4 A4 12 Close Close Close Copyr...

Page 36: ...r Wifi cable connection N Check the Wifi wafer 1pin Standard Repair Process Established date Revised date Error symptom 13 Change the Wifi assy Normal Voltage Y Y N Replace Main B D Wi Fi Mac value is NG N A15 A4 A4 A15 Close Close Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 37: ... Check and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date Error symptom Standard Repair Process 14 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 38: ...ceed as shown in the solution manual For models without any fix information provide the description Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date Error symp...

Page 39: ...lace cabinet Replace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date Error symptom Standard Repair Process 16 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 40: ...g Part A5 6 A Video error _Vertical Horizontal bar residual image light spot Connection diagram A6 7 A Video error_ Color error Check Link Cable Vx1 EPI reconnection condition A7 8 Appendix Defected Type caused by T Con Inverter Module Check Cable 1 2 A 1 11 A 2 11 Exchange Main Board 1 3 A 3 11 A 5 11 Exchange Module 1 3 A 6 11 A 8 11 Exchange T Con 1 2 A 9 11 A 10 11 Exchange Power Board PSU A 1...

Page 41: ... error_ No audio Normal video Checking method in menu when there is no audio A12 14 Voltage and speaker checking method when there is no audio A13 15 D Function error Remote control operation checking method A14 16 Magic Remote WiFi operation checking method A15 17 E Etc How to use the Service remote control A16 A18 18 Check items after Main B D replacement A19 19 Adjustment Test pattern ADJ Key A...

Page 42: ... date A1 Error symptom Content Check Back Light On with naked eye A Video error_No video Normal audio A1 If the Black light LED assemble is OK you can see the lights on each points Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 43: ...r_No video Normal audio A2 Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance 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 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 44: ...tor 10dB 15dB 20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop A3 Established date Revised date Error symptom Content A3 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 45: ...o error video lag stop 1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version A4 Established date Revised date Error symptom Content A4 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 46: ...easuring each voltage 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 A5 Established date Revised date Error symptom Content A5 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 47: ..._Vertical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A6 Established date Revised date Error symptom Content A6 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 48: ...connection condition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A7 Established date Revised date Error symptom Content A7 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 49: ...n of FFC cable CABLE R Color Excessive Color is Excessive due to FFC Cable Contact CABLE Screen darkness screen is dark due to poor contact due to disconnection of the FFC cable pin CABLE G Color Excessive G color transient due to poor FFC cable connection Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 50: ...ead LVDS cable connection problem CABLE Color spread LVDS cable connection problem CABLE Screen stop Due to foreign substance withi nLVDS cable PIN Appendix Examples of Symptoms Image error Check for poor cable contact Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 51: ...Main Screen noise Broken screen due to Main IC problem Main Dark picture Dark left side screen Main Broken picture Top bottom screen part Picture problem due to tuner Inner side quality problem Appendix Examples of Symptoms Main Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 52: ...anner Main Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen Check parts by symptom Appendix Examples of Symptoms Main Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 53: ...n problem Right side screen problem Main LG logo Screen problem Screen picture spread problem Main Right side picture problem No problem at the initial stage During Heat run right side picture problem Check parts by symptom Appendix Examples of Symptoms Main Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 54: ...the screen MODULE Internal matter BLU internal foreign matter inflow MODULE Image broken 6 block image broken MODULE Image broken Screen sync signal broken A 6 11 Check parts by symptom Appendix Examples of Symptoms Module Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 55: ...ng due to lateral external impact and internal bending of BLU MODULE Vertical smear Vertical spreading on cube screen in no signal MODULE Over color Screen contour part brightly Over color A 7 11 Check parts by symptom Appendix Examples of Symptoms Module Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 56: ...nter of the screen 1 block dark MODULE Vertical bar Center Vertical Bar MODULE Darkness at the bottom of the screen MODULE internal BLU breakage A 8 11 Check parts by symptom Appendix Examples of Symptoms Module Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 57: ...d the picture below the screen is broken T CON screen lower image broken T Con is defective and the picture below the screen is broken T CON screen lower image broken T Con is defective and the picture below the screen is broken A 9 11 Check parts by symptom Appendix Examples of Symptoms T Con Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 58: ...f the screen Initial normal operation upper darkness during heat run T CON Image Broken The entire screen is dark and bit noise occurs T CON Image Broken The entire screen is dark and bit noise occurs A 10 11 Check parts by symptom Appendix Examples of Symptoms T Con Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 60: ...ck front Power Indicator B Power error _No power A8 Established date Revised date Error symptom Content A8 ST BY condition On or Off Power ON condition Turn Off Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 61: ... Content Check power input voltage and ST BY 8 4V B Power error _No power SET Model Power P N Name 65NANO85 86 EAY65169921 LGP65 19UL6 Power Board Voltage Current Check the voltage of DC 13 2V line ST BY Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 62: ...nal message Remark Applied Normal Operation LED blank 0 times Normal Operation Slim Direct Driver IC MCU Communication Check LED blank 1 times DRV_IC to MCU communication Error Slim Direct LED B output voltage Check LED blank 2 times LED B OVP UVP check Slim Direct Open LED Protection LED blank 3 times Open level detect Slim Direct Short LED Protection LED blank 4 times Short level detect Slim Dir...

Page 63: ...nto adjustment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error_Off when on off whiling viewing A11 Established date Revised date Error symptom Content A11 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 64: ...und Out 4 Select TV Speaker Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A12 Established date Revised date Error symptom Content A12 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 65: ... 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 A13 Established date Revised date Error symptom Content 1 SPK_R FT 2 SPK_R FT 3 SPK_ L FT 4 SPK_ L FT Copyright 2020 LG Electronics Inc Al...

Page 66: ...checking method D Function error A14 Established date Revised date Error symptom Content Checking order to check remote control A14 IR EYE Sensor IR Eye LED Pin Pin name 1 3 5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND 5 WOL WIFI_PWR_ON 6 3 5V_WIFI 7 RESET 8 GND 9 BT_WAKE_UP_DEVICE 10 BT_WAKE_UP_HOST 11 GND 12 No Connection 13 No Connection 14 No Connection 15 No Connection 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR...

Page 67: ...nal 1 pin Checking order to check motion remote wifi A15 Wifi BT Front Wifi BT Rear A15 Pin Pin name 1 3 5V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND 5 WOL WIFI_PWR_ON 6 3 5V_WIFI 7 RESET 8 GND 9 BT_WAKE_UP_DEVICE 10 BT_WAKE_UP_HOST 11 GND 12 No Connection 13 No Connection 14 No Connection 15 No Connection 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND 22 3 5V 23 KEY2 24 KEY1 25 GND Copyright 2020 LG Ele...

Page 68: ... How to use the Service remote control A16 Established date Revised date Error symptom Content 0 4 1 3 0 4 1 3 1 How to access the remote control A16 E Etc Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 69: ...to Screen 4 3 16 9 PSM Changes in the order of Bright Picture Easy Picture Cinema Spots Game Custom PIcture1 Custom Picture2 Bright Picture SSM Added Function Standard user music cinema sports game standard user PIP Picture In Picture is activated TEXT Access to the Power Only mode CAP Broadcasting caption on off MPX Stereo mode mono stereo foreign language access Used when in factory mode Simplin...

Page 70: ... Red Green Blue Black Pattern Off Change X STUDIO Added function HDD USB external device s HDD screen is activated MENU User function gets activated EXIT Exit from the current mode TIME SHIFT Added function Moves forward backward of recorded contents MUTE Mute function 0 Volume IN STOP SET to factory mode VOL Volume Up Down CH Channel Up Down AV1 2 3 Added function Connects to external input 1 2 3...

Page 71: ...e model name and serial number after checking the ID label on the back cover 1 Press the Service remote control instart Key 2 Press the Service remote control ADJ Key No 13 Select White Balance Record the R G B GAIN Cut value of the color temperature before main board replacement After replacing the main board key in the recorded value A19 E Etc Copyright 2020 LG Electronics Inc All rights reserve...

Page 72: ... 11 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 A20 Established date Revised date Error symptom Content E Etc A20 Copyright 2020 LG Electronics Inc All rights reserved Only for training and service purposes ...

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