LG 55UH950V Service Manual Download Page 50

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D. Function error

MR15R operating checking

2. MR15R(Magic remote control) operating error

Check MR15R

itself Operation

Normal

operating?

Normal

operating?

Close

Check & Replace

Battery of MR15R

Is show ok

message?

Press the

wheel

Is show ok

message?

Close

Standard Repair Process

Established

date

Revised date

11/16

Error

symptom

Replace

MR15R

Turn off/on the set

and press the

wheel

Press the back key

about 5sec

Close

* If you conduct the loop at 3times, change the MR15R.

Check the

INSTART menu

RF Receiver ver

is “00.00”?

Check & Repair

RF assy

connection

Down load the Firmware

* INSTART MENU



13.RF remote

control Test



Firmware download

RF Receiver ver

is “00.00”?

Close

☞

A23

☞

ⓒ

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 55UH950V

Page 1: ...P NO MFL69498101 1603 REV00 CHASSIS UD62M MODEL 55 65UH950V 55 65UH950V ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL Internal Use Only ...

Page 2: ... Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 14 BLOCK DIAGRAM 25 EXPLODED VIEW 35 DISASSEMBLY 36 APPENDIX TROUBLE SHOOTING GUIDE ...

Page 3: ...o 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 metallic par...

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: ... Ireland Latvia Estonia Lithuania Poland Portugal Romania Albania Bosnia Slovakia Belarus DTV MPEG2 4 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 Croa tia Turkey Morocco Ireland Latvi...

Page 7: ...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 2 2 3 3 4 5 6 7 8 DVB S2 mode 1 2 2 3 3 4 3 5...

Page 8: ...0P 15 1920 1080 67 50 60 00 148 5 HDTV 1080P 5 2 HDMI Input 5 2 1 DTV mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Proposed 1 640 480 31 469 59 94 25 125 SDTV 480P 2 640 480 31 5 60 00 25 125 SDTV 480P 3 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I Spec out but display 4 720 480 15 75 60 00 13 514 SDTV DVD 480I 525I 5 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 6 720 4...

Page 9: ...03 UDTV 2160P 14 4096 2160 54 24 297 UDTV 2160P 22 3840 2160 53 95 23 98 296 703 UDTV 2160P 23 3840 2160 54 24 00 297 00 UDTV 2160P 24 3840 2160 56 25 25 00 297 00 UDTV 2160P 25 3840 2160 61 43 29 97 296 703 UDTV 2160P 26 3840 2160 67 5 30 00 297 00 UDTV 2160P 27 3840 2160 112 5 50 00 594 UDTV 2160P When HDMI1 2 3 UHD DEEP COLOUR ON 28 3840 2160 134 865 59 94 593 407 UDTV 2160P When HDMI1 2 3 UHD ...

Page 10: ...594 HDTV 2160P 2D to 3D Top Bottom half Side by Side half When HDMI1 2 3 UHD DEEP COLOUR ON 135 60 HDTV 2160P 8 5 3 3D Mode DTV HDMI USB 5 3 1 RF Input No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 3D input proposed mode 1 1280 720 37 500 50 74 25 HDTV 720P 2D to 3D Side by Side Top Bottom 2 1920 1080 28 125 50 74 25 HDTV 1080I 2D to 3D Side by Side Top Bottom 2 HDMI 1 4 3D Supported...

Page 11: ...25 34 Top and Bottom Side by side half Primary HDTV 1080P Secondary HDTV 1080P 43 94 54 23 97 24 148 35 148 5 32 Frame packing Primary HDTV 1080P 56 25 25 148 5 33 Frame packing Secondary HDTV 1080P 67 432 67 5 29 976 30 00 148 35 148 5 34 Frame packing Primary HDTV 1080P 56 250 50 148 5 31 Top and Bottom Side by side half Primary HDTV 1080P Secondary HDTV 1080P 67 43 67 5 59 94 60 148 35 148 50 1...

Page 12: ...DTV 1080P 2D to 3D Side by Side half Top Bottom 9 1920 1080 27 000 24 000 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom 10 1920 1080 28 12 25 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom 11 1920 1080 56 25 50 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom 12 1920 1080 26 97 23 976 74 176 HDTV 1080P 2D to 3D Side by Side half Top Bottom 13 1920 1080 33 75 30 000 74 25 HDT...

Page 13: ...input proposed mode 1 1024 768p 30 60 2D to 3D 2 1280 720p 30 60 3 1920 1080p 30 60 4 Others 2D to 3D No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1 1080p 33 75 30 74 25 Side by Side Half Top Bottom Side by Side Full Frame Sequential MPO Photo JPS Photo 2 2160p 67 5 30 297 6 USB Photo 3D 3D supported mode manually 7 USB 3D 3D supported mode automatically 8 Miracast Wid...

Page 14: ...rcumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours Caution When still image is displayed for a period of 20 minutes or longer Especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Automatic Adjustm...

Page 15: ...downloaded By OTA or Service man Sometimes model name or serial number is initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the instart key of ADJ remote control 2 Go to the menu 7 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo 4 Check the model name Instart menu Factory name displayed 5 Check th...

Page 16: ...t mode ⓐ Product ID ⓑ Serial No Controlled on production line ⓒ Month Year Controlled on production line ex Monthly 01 01 Year 2016 1A ⓓ Model Name Hex LGTV ⓔ Checksum LG TV Changeable by total EDID data ⓕ Vendor Specific HDMI 4 2 4 1 EDID DTS EDID 3D HDMI1 1 HDMI Deep Color OFF C S 0x9F 0X07 2 HDMI Deep Color ON C S 0x9F 0x5D Command Set ACK Transmission A l Set ID 20 Cr O K x or N G 0 1 2 3 4 5 ...

Page 17: ...ved Only for training and service purposes HDMI2 1 HDMI Deep Color OFF C S 0x9F 0XF7 2 HDMI Deep Color ON C S 0x9F 0x4D HDMI3 1 HDMI Deep Color OFF C S 0x9F 0XE7 2 HDMI Deep Color ON C S 0x9F 0x3D HDMI4 1 HDMI Deep Color OFF C S 0x9F 0XD7 2 HDMI Deep Color ON C S 0x9F 0x2D ...

Page 18: ... Deep Color OFF C S 0x9F 0X10 2 HDMI Deep Color ON C S 0x9F 0x66 HDMI2 1 HDMI Deep Color OFF C S 0x9F 0X00 2 HDMI Deep Color ON C S 0x9F 0x56 HDMI3 1 HDMI Deep Color OFF C S 0x9F 0XF0 Input FFh Checksum FFh Checksum Deep Color OFF Deep Color ON HDMI1 0x9F 0x07 0x9F 0x5D HDMI2 0x9F 0XF7 0x9F 0x4D HDMI3 0x9F 0XE7 0x9F 0x3D HDMI4 only for E6 0x9F 0XD7 0x9F 0x2D ...

Page 19: ... S 0x9F 0x46 Checksum HDMI 1 2 3 PCM EDID 3D HDMI1 1 HDMI Deep Color OFF C S 0x9F 0X82 2 HDMI Deep Color ON C S 0x9F 0XD8 HDMI2 1 HDMI Deep Color OFF C S 0x9F 0X72 2 HDMI Deep Color ON C S 0x9F 0xC8 Input FFh Checksum FFh Checksum Deep Color OFF Deep Color ON HDMI1 0x9F 0x10 0x9F 0x66 HDMI2 0x9F 0X00 0x9F 0x56 HDMI3 0x9F 0XF0 0x9F 0x46 ...

Page 20: ...d 3 Adjustment Remote control 4 Video Signal Generator MSPG 925F 720p 216 Gray Model 204 Pattern 49 Only when internal pattern is not available Color Analyzer Matrix should be calibrated using CS 100 5 1 3 Equipment connection MAP 5 1 4 Adj Command Protocol 1 Command Format START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP LEN Number of Data Byte to be sent CMD Command VAL FOS Data value CS Ch...

Page 21: ... 192 default data and decrease the others If internal pattern is not available use RF input In EZ Adj menu 7 White Balance you can select one of 2 Test pattern ON OFF Default is inner ON By selecting OFF you can adjust using RF signal in 216 Gray pattern Adj condition and cautionary items 1 Lighting condition in surrounding area Surrounding lighting should be lower 10 lux Try to isolate adj area i...

Page 22: ...thers 3 Adjustment mode mode Medium 3 Warm 1 Purpose Adjust the color temperature to reduce the deviation of the module color temperature 2 Principle To adjust the white balance without the saturation Fix the W gain to 192 default data and decrease the others 3 Adjustment mode mode Warm 5 3 8 3 Reference White Balance Adj coordinate and color temperature 1 Luminance 204 Gray 80IRE 2 Standard color...

Page 23: ... 2 Check Sensor data backlight data available 3 Cover the Eye Q sensor on the front of the using your hand and wait for 6 seconds 4 Confirm that value is lower than 10 of the Raw Data Sensor data Back light If after 6 seconds value is not lower than 10 replace Eye Q sensor 5 Remove your hand from the Eye Q sensor and wait for 6 seconds 6 Confirm that ok pop up If change is not seen replace Eye Q s...

Page 24: ...l Pressure TEST POWER CORD GND LIVE NEUTRAL LEAKAGE CURRENT At 0 5 mArms 8 Audio Measurement condition 1 RF input Mono 1 KHz sine wave signal 100 Modulation 2 CVBS Component 1 KHz sine wave signal 0 5 Vrms 9 USB S W Download option Service only 1 Put the USB Stick to the USB socket 2 Go to General menu then enter to About This TV 3 Enter the USB EXPERT MODE 4 Updating is starting 5 Updating Comple...

Page 35: ...Stand Body EXPLODED VIEW 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 manufactur...

Page 36: ...Use Only Copyright LG Electronics Inc All rights reserved Only for training and service purposes DISASSEMBLY 1 Disassemble Stand Push up Cable Cover and Pull the Cable Cover Disassemble Stand Cover Disassemble Screw 4EA ...

Page 37: ...erved Only for training and service purposes 2 Disassemble B C Screw 3 Disassemble Back Cover O 4 7Kgf cm O 5 7Kgf cm O M3 5 5 8EA O M4 10 1EA Pull the Power Cord Bracket Holing Power Cable Change Position and Pull up Back Cover Pull the Back Cover upward with using snap ...

Page 39: ... Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Remote control Local switch checking 10 MR15R operating checking 11 11 12 Wifi operating checking 12 13 Camera 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 all Check whether there is SVC Bulletin in GSCS System for...

Page 40: ... 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 16 Error symptom A Video error No video Normal audio 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 Vx1 EPI Cable Speaker Ca...

Page 41: ...eplace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A18 Established date Revised date 2 16 Error symptom 2 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...oldering Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD All Settings Programmes Programmes Tuning Settings 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 d...

Page 43: ...k 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 Or T Con B D Request repair for external device cable Color error Check Test pattern A8 A7 Standard Repair Process Established date Revised date 4 16 Error symptom 4 Check the HDMI ULTRA HD Deep Color menu Menu On N Y Menu Off and Re Check All Settings General HDMI ULTR...

Page 44: ...en 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 HDMI ULTRA HD Deep Color menu off Replace Main T con B D Screen normal N Y Check S W Version Y N Check v...

Page 45: ...put voltage of Power B D N Y Normal voltage Replace Main B D Y OK Replace Main B D N Y Normal Check ST BY Voltage Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A18 A18 Standard Repair Process Established date Revised date 6 16 Error symptom 6 Stand By Red or Turn On Operating Turn Off Close Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purp...

Page 46: ... 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_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWERO...

Page 47: ...e 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 8 16 Error symptom Standard Repair Process 8 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ... 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 18V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Est...

Page 49: ...place Baterry of R C Check Repair Cable connection Connector solder Normal operating Check Stan by Voltage On Main B D A22 Normal Voltage Close N N Check Stan by voltage on Power B D Replace Power B D or Replace Main B D A18 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A22 Replace Main B D Y A22 Standard Repair Process Established date Revised date 10 16 Error symptom 10 Y Copy...

Page 50: ...Revised date 11 16 Error symptom 11 Replace MR15R Turn off on the set and press the wheel Press the back key about 5sec Close If you conduct the loop at 3times change the MR15R Y Check the INSTART menu RF Receiver ver is 00 00 Y Check Repair RF assy connection N Down load the Firmware INSTART MENU 13 RF remote control Test Firmware download Y RF Receiver ver is 00 00 N Close A23 A4 A4 Copyright ⓒ ...

Page 51: ...nnection N Check the Wi Fi Wafer pin Standard Repair Process Established date Revised date 12 16 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 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...a cable connection N Check the Camera wafer P4200 12 13pin Standard Repair Process Established date Revised date 13 16 Error symptom 13 Change the Camera assy Normal Voltage Close Y Y N Replace Main B D Camera Ver is NULL N Close A25 A4 A4 A25 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ... 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 14 16 Error symptom Standard Repair Process 14 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...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 15 16 Error symptom Stan...

Page 55: ...place remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 16 16 Error symptom Standard Repair Process 16 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...A5 7 A Video error _Vertical Horizontal bar residual image light spot connection diagram A6 8 A Video error_ Color error Check Link Cable EPI reconnection condition A7 9 Adjustment Test pattern ADJ Key A8 10 Appendix Defected Type caused by T Con Inverter Module Exchange Main Board 1 A 1 5 11 Exchange Main Board 2 A 2 5 12 Exchange Power Board PSU A 3 5 13 Exchange Module 1 A 4 5 14 Exchange Modul...

Page 57: ... error_ No audio Normal video Checking method in menu when there is no audio A20 20 Voltage and speaker checking method when there is no audio A21 21 D Function error remote control operation checking method A22 22 Motion Remote operation checking method A23 23 Wi Fi operation checking method A24 24 Camera operation checking method A25 Not Used Continued from previous page Copyright ⓒ 2016 LG Elec...

Page 58: ...D 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 55 65UH95 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...fter recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD ALL MODELS Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance of item 13 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 I...

Page 60: ...ngth is too weak Use Signal Booster Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A3 Established date Revised date Error symptom Content A3 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ... stop 1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version ALL MODELS A4 Established date Revised date Error symptom Content A4 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...tage 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 A5 Established date Revised date Error symptom Content A5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...ntal 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 ALL MODELS Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...on 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 ALL MODELS Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ...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 A8 Established date Revised date Error symptom Content A8 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...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 Main Board 1 A 1 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...r Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange Main Board 2 A 2 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 68: ...ix Exchange Power Board PSU 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 69: ...stalk Crosstalk Press damage Press damage A 4 5 Un repairable Cases In this case please exchange the module Press damage Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ... 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 A 5 5 Un repairable Cases In this case please exchange the module Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...r Indicator B Power error _No power A17 Established date Revised date Error symptom Content A17 ST BY condition On or Off Power ON condition Turn Off Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 72: ...No power A18 Check the DC 18V 1 18V 2 18V 3 18V 4 18V 5 GND 6 GND 7 18V 8 18V 9 GND 10 GND 11 GND 12 GND 13 PWR On 14 P DIM2 15 GND 16 18V 17 18V 18 18V 19 18V 20 18V 21 GND 22 GND 23 DRV ON 24 P DIM1 25 GND 26 SCLK 27 VSINC 28 SIN 28Pin map LPB Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 73: ...m 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A19 Established date Revised date Error symptom Content A19 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 74: ...lect 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 A20 Established date Revised date Error symptom Content A20 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...audio C Audio error_No audio Normal video A21 Established date Revised date Error symptom Content A21 55 65UH95 1 SPK_R _FT 2 SPK_R _FT 3 SPK_L _FT 4 SPK_L _FT 5 SPK_R _CT 6 SPK_R _CT 7 SPK_L _CT 8 SPK_L _CT 1 18V 2 18V 3 18V 4 18V 5 GND 6 GND 7 18V 8 18V 9 GND 10 GND 11 GND 12 GND 13 PWR On 14 P DIM2 15 GND 16 18V 17 18V 18 18V 19 18V 20 18V 21 GND 22 GND 23 DRV ON 24 P DIM1 25 GND 26 SCLK 27 VSI...

Page 76: ...ethod D Function error A22 Established date Revised date Error symptom Content A22 55 65UH95 P4000 Pin map 1 3 5V_WIFI 12 EYE_SCL 2 WIFI_DM 13 EYE_SDA 3 WIFI_DP 14 GND 4 GND 15 IR 5 WOL_Power_On 16 LED_R 6 3D_Sync 17 GND 7 BT_Reset 18 3 5_ST 8 GND 19 KEY2 20 KEY1 21 GND Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...ing method Established date Revised date Error symptom Content A23 A23 D Function error P4000 Pin map 1 3 5V_WIFI 12 EYE_SCL 2 WIFI_DM 13 EYE_SDA 3 WIFI_DP 14 GND 4 GND 15 IR 5 WOL_Power_On 16 LED_R 6 3D_Sync 17 GND 7 BT_Reset 18 3 5_ST 8 GND 19 KEY2 20 KEY1 21 GND 55 65UH95 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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