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Copyright

ⓒ

2020 LG Electronics. Inc. All right reserved. Only for training and service purposes

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed when-
ever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC connections).

1.Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary).
2.carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.
3.Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.
4.Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good
copper pattern. Solder the overlapped area and clip off any excess jumper wire

At Other Connections

Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit board.

1.Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2.Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly
connected to the affected copper pattern.
3.Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.

CAUTION

: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.

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Содержание 65UN7000PUD

Страница 1: ...lication 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 without limitation any text graphics or logos i...

Страница 2: ...d Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 5 SPECIFICATION 10 MAIN IC BLOCK DIAGRAM 15 EXPLODED VIEW 17 DISASSEMBLY PROCESS 19 ASSEMBLY PROCESS 28 TROUBLE SHOOTING GUIDE 37 SW Update USB NSU 86 ...

Страница 3: ...ved 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 antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1...

Страница 4: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes Leakage Current Hot Check circuit ...

Страница 5: ...ropriate high voltage meter or other voltage measuring device DVM FETVOM etc equipped with a suitable high voltage probe Do not test high voltage by drawing an arc 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton t...

Страница 6: ...der removal device Some sol der removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices 5 Do not use Freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices ...

Страница 7: ...e solder flows onto and around both the component lead and the foil CAUTION Work quickly to avoid overheating the circuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the circu...

Страница 8: ... circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as possible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead ...

Страница 9: ...lly crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique i...

Страница 10: ...al notice 2 1Temperature 25 5 77 9 CST 40 2 2 2Relative Humidity 60 10 2 3Power Voltage Standard input voltage 100 240V 50 60Hz for 50UM6900PUA Voltage of each product is marked by models 2 4Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 2 5The receiver must be operated for about 20 minutes prior to the adjustment 3 Tes...

Страница 11: ... Receiving system Digital ATSC 64 256 QAM Analog NTSC M North America 5 Video Input NTSC M Vertical 1EA Gender Except Korea mod el 6 Component Input Y Cb Cr Y Pb Pr Vertical 1EA Gender Except Korea mod el 7 HDMI Input UHD HDMI 1 PC DTV Format Support 6Gbps HDMI 2 PC DTV Format Support 6Gbps Support ARC HDMI 3 PC DTV Format Support 6Gbps 8 Audio Input Not Use DVI Audio AV Audio Vertical Gender Exce...

Страница 12: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 5 Component Video Input Y Cb Pb Cr Pr ...

Страница 13: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 6 HDMI Input DTV PC ...

Страница 14: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 6 HDMI Input DTV PC ...

Страница 15: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes Main IC Block Diagram ...

Страница 16: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 1 Main Circuit Block Diagram ...

Страница 17: ...Many 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 NOTIC...

Страница 18: ... 18 Copyright LG Electronics Inc All rights reserved Only training and service purposes EXPLODED VIEW MODULE 200R 200C 200P ...

Страница 19: ...G Electronics Inc All right reserved Only for training and service purposes 1 Unlock the screws to remove the stand out of the TV 2 Unlock the screws and remove the pins to separate the back cover DISASSEMBLY PROCESS SET ...

Страница 20: ...ly for training and service purposes 4 Remove the pins tapes and screws to separate the IR WIFI SPK board from the rear cover 3 Remove the pins tapes and screws to separate the Main board Power board VESA Supports and Stand Supports DISASSEMBLY PROCESS SET v ...

Страница 21: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 5 Remove the power board and main board 6 Move to next page for Panel DISASSEMBLY PROCESS SET ...

Страница 22: ... reserved Only for training and service purposes 2 Take out the source PCB from the VELCRO 1 Remove the screws tapes to separate the PCB board and front bezel Remove the screws bottom side Red tapes in Source PCB Yellow DISASSEMBLY PROCESS Module ...

Страница 23: ...poses 3 Carefully disassemble the front bezel from the panel After finish 2 reverse module as below picture and progress disassembly 1 Disassemble front bezel top right left with tool such as plastic crowbar Tool 2 Disassemble front bezel from the front of panel DISASSEMBLY PROCESS Module ...

Страница 24: ...dle cabinet and then the BLU plate assy left over Need to reuse Middle Cabinet 1Diffuser Sheet 1Prism Sheet 1Diffuser Plate 1Reflect Sheet Keep without damage during disassembly 1 Before lift up panel remove double tape at top side Use tool and remove it as below 2 Lift up Panel Small plastic tool DISASSEMBLY PROCESS Module ...

Страница 25: ...lly remove the OC Middle cabinet and then the BLU plate assy left over 3 Disassemble Middle cabinet Below red point is hook position Carefully detach it Reuse middle cabinet when assembly again Keep without damage during disassembly Hook Position Use crowbar Detach it as below DISASSEMBLY PROCESS Module ...

Страница 26: ...e purposes 5 Remove Sheet Diffuser plate Then BLU plate assy left over 1 1Diffuser Sheet 1Prism Sheet 1Diffuser Plate 1Reflect Sheet Keep without damage during disassembly 2 Left over BLU plate assy DISASSEMBLY PROCESS Module 1Diffuser Sheet 1Prism Sheet 1Diffuser Plate 1Reflect Sheet ...

Страница 27: ...2020 LG Electronics Inc All right reserved Only for training and service purposes 6 Remove LED Light Bar 1 Remove screws and tapes to separate the LED Light Bar DISASSEMBLY PROCESS Module 2 Take away LED Light Bar ...

Страница 28: ...tronics Inc All right reserved Only for training and service purposes Module ASSEMBLY PROCESS 1 Assemble the LED Light Bar 2 Install the screws tapes to assemble the LED Light Bar 1 Place LED Light Bar on the metal back cover ...

Страница 29: ...Inc All right reserved Only for training and service purposes 2 Assembly Sheet Diffuser plate Module ASSEMBLY PROCESS 1 Prepare BLU Plate Assy 2 Assemble Sheet Diffuser plate 1Diffuser Sheet 1Prism Sheet 1Diffuser Plate 1Reflect Sheet ...

Страница 30: ...s Inc All right reserved Only for training and service purposes 3 Assemble Middle Cabinet 1 Prepare Middle Cabinet and attach hook with BLU plate assy as below by hands 4 Put down Panel on the Middle Cabinet Module ASSEMBLY PROCESS ...

Страница 31: ...ht reserved Only for training and service purposes 5 Carefully assemble the front bezel on the panel 1 Prepare front bezel and screw bottom side Then attach top right left side by hands as below 2 Check assembly condition Module ASSEMBLY PROCESS ...

Страница 32: ...ht reserved Only for training and service purposes 6 Get the source PCB in the VELCRO 7 Install the screws tapes to the assemble the PCB board and front bezel Module ASSEMBLY PROCESS Install the screws bottom side Red tapes in Source PCB Yellow ...

Страница 33: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 8 Install panel ok Module ASSEMBLY PROCESS ...

Страница 34: ...c All right reserved Only for training and service purposes 1 Install the power board and main board 2 Install the cables pins tapes and screws to assembly the Main board Power board VESA Supports and Stand Supports SET ASSEMBLY PROCESS ...

Страница 35: ...ved Only for training and service purposes 3 Install the cables pins tapes and screws to assemble the IR WIFI SPK board from the rear cover 4 Install the pins of the WIFI IR cable and SPK before covering the back cover and screws SET ASSEMBLY PROCESS v ...

Страница 36: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes 5 Install the screws on the back cover 6 Install the screws to assemble the stand bases SET ASSEMBLY PROCESS ...

Страница 37: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes TROUBLE SHOOTING GUIDE ...

Страница 38: ...izontal bar residual image light spot external device color error 5 6 B Power error No power 6 7 Off when on off while viewing power auto on off 7 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error Remote control Local switch checking 11 11 Wifi operating checking 12 12 External device recognition error 13 13 E Noise Circuit noise mechanical nois...

Страница 39: ...Check Power Board 13 2V output Normal voltage Y Replace Inverter or 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 Standard Repair Process A18 A1 A18 A4 A2 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D V...

Страница 40: ...and service purposes Normal voltage Check various voltages of Power Board 13 2V No Video No audio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error A18 Established date Revised date Error symptom 2 No video No audio ...

Страница 41: ...RF Cable at other equipment DVD Player Set Top Box Differentmaker TV etc SVC Bulletin Replace Main B D Check Tuner soldering 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 distribut...

Страница 42: ...y input External Input AV HDMI Y External device Cable normal External Input Component error 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 Check Test pattern A8 A7 Standard Repair Proce...

Страница 43: ...nics Inc All right reserved Only for training and service purposes A Video error Vertical Horizontal bar residual image light spot external device color error Established date Revised date Error symptom Standard Repair Process 5 ...

Страница 44: ...Check Power On High Check Power cord was inserted properly Check LED Replace Power B D Measure 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 A17 A18 A18 A18 Standard Repair Process Established date Revised date Error symptom 6 Stand By Red or Turn On Operating Turn O...

Страница 45: ... Off when on off while viewing power auto on off Established date Revised date Error symptom Standard Repair Process 7 Error N Y Fix A C cord Outlet and check each 2 phase out Check A C cord Check for all 2 phase power out Check outlet Replace Main B D CPU Abnormal Replace Power B D N Y Normal End Abnormal 1 ...

Страница 46: ...tabilization check routine Power Detect High 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 m...

Страница 47: ... menu Speaker off Off N Y Cancel OFF Check audio 13 2V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A20 A21 A18 Disconnection Established date Revised date Error symptom Standard Repair Process 9 ...

Страница 48: ...d audio Discontinuation Noise only for Analog Wrecked audio Discontinuation Noise only for 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 13 2V Repla...

Страница 49: ...tomer cause is interference from light in room Check R C Operating When turn off light in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A22 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 A18 Check IR Output signal Normal Signal N Y Repair Replace IR B D ...

Страница 50: ...i operating error Check the INSTART menu Wi Fi Mac value is NG Y Check Repair Wifi cable connection N Check the Wifi wafer 1pin Standard Repair Process Established date Revised date Error symptom 12 Change the Wifi assy Normal Voltage Close Y Y N Replace Main B D Wi Fi Mac value is NG N Close A24 A4 A4 A24 D Function error ...

Страница 51: ...ht ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes External device recognition error Established date Revised date Error symptom Standard Repair Process 13 D Function error ...

Страница 52: ...OR 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 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 O...

Страница 53: ...rvice purposes Replace module Zoom part with exterior damage Module damage Cabinet damage Replace 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 15 ...

Страница 54: ...NER input signal strength checking method A3 4 Version checking method A4 5 Tuner Checking 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 reconnection condition A7 8 Appendix Defected Type caused by T Con Inverter Module Check Cable 1 2 A 1 11 A 2 11 9 Exchange Main Board 1 3 A 3 11 A 5 11 10 Exchan...

Страница 55: ...F MODE checking method A19 16 C Audio error_ No audio Normal video Checking method in menu when there is no audio A20 17 Voltage and speaker checking method when there is no audio A21 18 D Function error Remote control operation checking method A22 19 Remote operation checking method A23 20 E Etc How to use the Service remote control A24 A26 21 Check items after Main B D replacement A27 22 Adjustm...

Страница 56: ...stablished date Standard Repair Process Detail Technical Manual Revised date A1 Error symptom Content Check LCD back light with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from locations A1 ...

Страница 57: ... 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 Established date Standard Repair Process Detail Technical Manual Revised date A2 Error symptom Content Check White Balance value A Video error_No video Normal audio A2 ...

Страница 58: ...eserved Only for training and service purposes Established date Standard Repair Process Detail Technical Manual Revised date A3 Error symptom Content TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A3 ...

Страница 59: ...ng method for remote control for adjustment Press the IN START with the remote control for adjustment ALL MODELS Version 65UN81006LB Established date Standard Repair Process Detail Technical Manual Revised date A4 Error symptom Content Version checking method A Video error_Video error video lag stop A4 ...

Страница 60: ...th 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 ALL MODELS Established date Standard Repair Process Detail Technical Manual Revised date A5 Error symptom Content TUNER checking part A Video error_Video error video lag stop A5 ...

Страница 61: ...poses As the part connecting to the external input check the screen condition by signal ALL MODELS Established date Standard Repair Process Detail Technical Manual Revised date A6 Error symptom Content connection diagram 1 A Video error _Vertical Horizontal bar residual image light spot A6 ...

Страница 62: ...d service purposes Check the contact condition of the Link Cable especially dust or mis insertion Established date Standard Repair Process Detail Technical Manual Revised date A7 Error symptom Content Check Link Cable Vx1 EPI reconnection condition A Video error_Color error A7 ...

Страница 63: ...r cable contact Item Symptom Name Cause Symptom Image CABLE Color smear Poor broken pin 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 A 1 11 ...

Страница 64: ...me Cause Symptom Image CABLE Color spread LVDS cable connection problem CABLE Color spread 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 Imageerror Check for poor cable contact A 2 11 ...

Страница 65: ...mptom Image Main Screen noise Bit noise from horizontal screen 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 Check parts by symptom A 3 11 ...

Страница 66: ...em Symptom Name Cause Symptom Image Main Broken screen Broken screen in a horizontal manner Main Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen Appendix Examples of Symptoms Main Check parts by symptom A 4 11 ...

Страница 67: ...e No problem at the initial stage G color spread after 10 minutes Main Right side Screen 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 Appendix Examples of Symptoms Main Check parts by symptom A 5 11 ...

Страница 68: ...use Symptom Image MODULE Isometric Horizontal Bar Isometric horizontal bars occur throughout the screen MODULE Internal matter BLU internal foreign matter inflow MODULE Image broken 6 block image broken MODULE Image broken Screen sync signal broken Appendix Examples of Symptoms Module Check parts by symptom A 6 11 ...

Страница 69: ...oken Internal damage and image breakage due to external impact MODULE Bend on the screen Bending 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 Appendix Examples of Symptoms Module Check parts by symptom A 7 11 ...

Страница 70: ...tom Name Cause Symptom Image MODULE Vertical bar Center Vertical Bar MODULE Screen darkness Center of the screen 1 block dark MODULE Vertical bar Center Vertical Bar MODULE Darkness at the bottom of the screen MODULE internal BLU breakage Appendix Examples of Symptoms Module Check parts by symptom A 8 11 ...

Страница 71: ... 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 T CON screen lower image broken T Con is defective and the picture below the screen is broken Appendix Examples of Symptoms T Con Check parts by symptom A 9 11 ...

Страница 72: ...fer Locking The strength is weak and cable contact failure occurs T CON Darkness at the top of 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 Appendix Examples of Symptoms T Con Check parts by symptom A 10 11 ...

Страница 73: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes No Light No picture Sound Ok Appendix Exchange Power Board PSU A 11 11 ...

Страница 74: ...d Only for training and service purposes ST BY condition On or Off Power ON condition Turn Off Established date Standard Repair Process Detail Technical Manual Revised date A17 Error symptom Content Check front Power Indicator B Power error _No power A17 ...

Страница 75: ...Open OFF 2 PWON BLON PDIM SIGNAL CHARACTERISTICS 1 CN102 110V 240V AC INPUT CHECK 3 ADIM SIGNAL CHARACTERISTICS SIGNAL TYPE COMMENTS NOTE Logic level low 0V 10KHZ MIN FREQUENCY Logic level high 3V 4 INPUT CHARACTERISTICS PARAMET ER SYMBOL MIN TYP MAX UNIT REMARK INPUT VOLTAGE Vin 70 V BLON 3 3V PDIM 100 RL 2 String Lamp INPUT CURRENT Iin 1 7 A Vin 70V BLON 3 3V PDIM 100 RL 2 String La mp INPUT POW...

Страница 76: ...method 1 Press the IN START button of the remote control for adjustment 2 Check the entry into adjustment item 3 ALL MODELS 65UN81006LB K6LP Established date Standard Repair Process Detail Technical Manual Revised date A19 Error symptom Content POWEROFF MODEchecking method B Power error _No power A19 ...

Страница 77: ...ss the Setting button on the remote control 2 Select the Sound function of the Menu 3 Select the Sound Out 4 Select TV Speaker ALL MODELS Established date Standard Repair Process Detail Technical Manual Revised date A20 Error symptom Content Checking method in menu when there is no audio B Power error _No power A20 ...

Страница 78: ... C Audio error_No audio Normal video 1 SPK_R FT 2 SPK_R FT 3 SPK_L FT 4 SPK_L FT Checking order when there is no audio 1 Check the contact condition of or 13 2V connector of Main Board 2 Measure the 13 2V input voltage supplied from Power Board If there is no input voltage remove and check the connector 3 Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you t...

Страница 79: ... Pin Pin name 1 VCC 2 USB_DM 3 USB_DP 4 GND 5 WOL WIFI_ON 6 VCC 7 WIFI_Suspend Resume 8 GND 9 Combo_Reset 10 BT_WAKEUP_HOST 11 GND 12 VCC 13 14 15 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND 22 VCC 23 KEY2 24 KEY1 25 GND Checking order 1 Check IR cable condition between IR Main board Check picture number and 2 Check the standby 3 5V on the terminal 6 pin 3 AS checking the Pre Amp IR LED lig...

Страница 80: ...ethod D Function error Pin Pin name 1 VCC 2 USB_DM 3 USB_DP 4 GND 5 WOL WIFI_ON 6 VCC 7 WIFI_Suspend Resume 8 GND 9 Combo_Reset 10 BT_WAKEUP_HOST 11 GND 12 VCC 13 14 15 16 EYE_SDA 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND 22 VCC 23 KEY2 24 KEY1 25 GND Wifi BT Front Wifi BT Rear A23 Checking order 1 Check BT Wifi cable condition between BT Wifi assy Main board 2 Check the 3 5V on the terminal 22 Chec...

Страница 81: ...nly for training and service purposes 0 4 1 3 0 4 1 3 1 How to access the remote control 65UN81006LB K6LP Established date Standard Repair Process Detail Technical Manual Revised date A24 Error symptom Content How to use the Service remote control E Etc A24 ...

Страница 82: ...ight 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 Simplink Added Function Access to the Simplink connected...

Страница 83: ...O 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 COMP1 2 Added function Connects to Component 1 ...

Страница 84: ...ved Only for training and service purposes Check items after Main B D Model Number D L White Balance Established date Standard Repair Process Detail Technical Manual Revised date A27 Error symptom Content Check items after Main B D replacement A27 E Etc ...

Страница 85: ...ypes 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 Established date Standard Repair Process Detail Technical Manual Revised date A28 Error symptom Content Adjustment Test pattern ADJ Key A28 E Etc ...

Страница 86: ...Copyright ⓒ 2020 LG Electronics Inc All right reserved Only for training and service purposes SW Update USB NSU ...

Страница 87: ...aining and service purposes USB Download 1 Insert the USB memory Stick to the USB port 2 Automatically detect the SW Version and show the below message 3 Click YES initiate the download and install of the update 4 Click Check Now move to About This TV page for update ...

Страница 88: ...c All right reserved Only for training and service purposes USB Download 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 5 TV is updating ...

Страница 89: ...ics Inc All right reserved Only for training and service purposes NSU Download Need Internet Connection 1 Menu All Settings Support Software Update 2 Click CHEK FOR UPDATES system check newest version 3 Click DOWNLOAD AND INSTALL ...

Страница 90: ...Inc All right reserved Only for training and service purposes 5 After finished the update below Pop up appear 6 Turn OFF the TV and On Check the updated SW Version and Tool Option 4 TV is updating NSU Download Need Internet Connection ...

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