LG 70UM7300PTA Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. LED TV
  5. 70UM7300PTA
  6. Service manual

LG 70UM7300PTA Service Manual

Chassis ub93u
Hide thumbs Also See for 70UM7300PTA:
Table of Contents

Advertisement

Quick Links

Download this manual
LED TV
SERVICE MANUAL
CHASSIS : UB93U
MODEL : 70UM7300PTA / 7380PVA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL71443404 (1903-REV00)
Copyright © 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
70UM7880PTA
CONFIDENTIAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 70UM7300PTA and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for LG 70UM7300PTA

Summary of Contents for LG 70UM7300PTA

  • Page 1 SERVICE MANUAL CHASSIS : UB93U MODEL : 70UM7300PTA / 7380PVA 70UM7880PTA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL71443404 (1903-REV00) Copyright © 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 2 SPECIFICATION ..................6 SOFTWARE UPDATE ................10 BLOCK DIAGRAM ................. 11 EXPLODED VIEW .................. 21 DISASSEMBLY GUIDE ................22 TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 3: Safety Precautions

    When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 5 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. - 5 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 6: Specification

    DVI Audio, Component, AV 10 SPDIF out Optical Audio out Headphone out Antenna, HDMI1, HDMI2, HDMI3, HDMI4, USB1, USB2, USB3 Except UB93x 12 Ethernet Connect - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 7: Component Input

    33.75 79.2 HDTV 1080P 1920*1080 56.25 148.5 HDTV 1080P 1920*1080 67.43 59.94 148.35 HDTV 1080P 1920*1080 67.5 148.5 HDTV 1080P 1920*1080 112.5 UDTV 2160P - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 8 8K Model Only. This will 7680*4320 131.87 29.97 1188 be added in USERGUIDE after 8K model develop- 7680*4320 1188 ment. 7680*4320 2376 7680*4320 263.74 59.94 2376 7680*4320 2376 - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 9 8K Model Only. This will be 7680*4320 131.87 29.97 1188 added in USERGUIDE af- 7680*4320 1188 ter 8K model development. 7680*4320 2376 7680*4320 263.74 59.94 2376 7680*4320 2376 - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 10 (7) Click [Yes] : TV will be DC OFF → ON. and Tool Option. (8) After TV turned on, Check the updated SW Version and Tool Option. - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 11: Block Diagram

    BLOCK DIAGRAM 1. Main SOC - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 12 2. EPI / CDES - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 13 Main SOC Panel 3840x2160@60p VX1_MSE [PAD_GPIO19] AGP_CTL [ PAD_GPIO20] Vx1 8Lane 51P [ PAD_MOD_TX_P00~07] LOCKAn [PAD_MOD_TX_P12(LVA3- )] HTPDAn [PAD_MOD_TX_N12(LVA3+)] I2C_SCL6/SDA6 [PAD_GPIO30SCK4] DATA_FORMAT_0/1 [PAD_GPIO31SDA4] [PAD_GPIO23] [PAD_GPIO24] - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 14 4. TUNER LNB1_TX - 14 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 15 5. VIDEO & AUDIO IN/OUT - 15 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 16 6. HDMI 2.0 - 16 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 17 7. USB / Wi-Fi / M-Remote / UART(Debug) - 17 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 18 8. I2C Map - 18 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 19 9. GPIO(Main SOC) - 19 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 20 10 GPIO(MICOM) - 20 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 21 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. - 21 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 22 1. 70UM73_1pole/2pole Set B/C Guide 1-1. Allowed to handle Guide line 1-2. Prohibited while handling DO NOT handle the area all the time Guide line - 22 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 23: Disassembly Guide

    (2pole) Lift up the rear cover using stuffs like paddle or cards to insert between rear 2pole cover and rear cover, bottom. 2pole - 23 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 24 Image Type Working guide Remark Unfasten screws on 1pole supporter. 1pole Unfasten screws on 2pole supporter 2pole - 24 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 25: Assembly Guide

    2. Fasten screws on each points. 3. Hang speaker cable as below. 1. Workers should hold each side as below. SHOULD check handling guide on first page. Common - 25 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 26 B/C has been inserted Image Type Working guide Remark 1. Fasten screws on each points. Common 1. Assemble 1pole stand. 1pole 2. Fasten screws on each points. - 26 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 27 Image Type Working guide Remark 1. Assemble 2pole stand. (A/B) 2pole 2. Fasten screws on each points. (A/B) - 27 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 28: Ffc Cable

    2. Disassemble 8 SPCB Cover shield L/R screws (Use M3 Screw Module Driver) 3. Disassemble the screw, and then move each SPCB cover field L/R upward to disassemble it. - 28 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 29 6. Disassemble 9 screws on the lower side of the C/top - Screw Spec: M3*8 (Black) - Driver : M3 Screw Module Driver is available - 29 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 30 - Grasp the top side of the SPCB and pull it to release the top side hook of the holder, and then disassemble the SPCB from the bottom side of the hook of the holder. - 30 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 31 11. Disassemble the C/Top Lower Hook - Unhook the C/Top lower side Hook with the Hook engaged in the Guide Panel (the bottom side can be released by hand). - 31 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 32 (* Precautions : Must be worked more than 2 people, Be careful of damage to the Guide Panel due to large size) Up: 12ea, Down: 12ea, Left: 7ea, Right: 7ea - 32 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 33 - As the reflector hole is fixed to the lens, disassemble the reflector by release the the fixation of lens from the end on the right. a fixed part a fixed part - 33 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 34 22. Attach the reflector sheet - Insert the sheet hanging hole on the upper(8 EA)/Lower(6 EA)/Left(5 EA)/Right(5 EA) outside of the Reflector into the cover Bottom Sheet hanging. - 34 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 35 Support DP is vertical Position to the LCM. 26. Support Pins Assembly - Press the Support Pin with your hand down to fix it to the Cover Bottom (Total 5 EA) - 35 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 36 G/Panel Forcing Force on Lower Side * Precautions : In case of gap between guide panel and sheet (Direction Down Line) Recheck Hook Tightening - 36 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 37: Panel Assembly

    31. Confirm C/Top Book Tightening - Check if the Hook is engaged C/Top Hook (Up: 10ea, Left: 3ea, Right:3ea (Total 16ea)) C/Top Hook (Down: 8ea) - 37 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 38 - First, enter the upper part of the holder and then press the lower part of the holder to tighten the SPCB. 34. C/Top Lower side Screw 9ea assemble - Screw Spec: M3*8 (Black) - Driver : M3 Screw Module Driver available. - 38 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 39 - Screw Spec : M3*6.0mm Tapping Screw(Silver) - Location : Up(11ea)/Left(6ea)/Right(6ea) - Driver : Normal size screw TIP Driver is available. Backside Screw point 상 좌 우 - 39 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 40 39. Assemble 8 SPCB Cover shield L/R screws (Use M3 Screw module Driver) * Precautions : Cover Shield flange must be inserted between C/Top and BLU (do not protrude into C/Top outer) - 40 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 41: Troubleshooting Guide

    TROUBLE SHOOTING GUIDE Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 42 E. Noise Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GSCS System for these model. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 43 ☞A4 & A2 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 44 ☞A18 Check various Check and No Video/ voltages of Power Normal replace No audio Board (13.2V…) voltage? MAIN B/D Replace Power Board and repair parts Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 45 1. Reconnection 2. Install Booster S/W Upgrade Contact with signal distributor Normal or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 46 Component device/ Cable cable error normal Request repair for external device/cable Check external External HDMI device and Replace Main/T-con B/D device/ Cable error cable normal Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 47 Replace (Check normal operation of HDMI/ Screen Main /T-con External Input, Component, normal? RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

  • Page 48: Power Error

    Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Check ST-BY 3.5V Close voltage? ☞A18 Replace Power B/D Replace Power Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 49 Error? Normal? Abnormal Check for all 3- phase Replace Power B/D power out Abnormal Fix A/C cord & Outlet and check each 3 phase out Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 50 Reboot by SW down load function UNKNOWN No meaning (same as initial value) COMP_END OLED threshold voltage degradation(Compensation) completes. PNWASHDONE Power off by panel noise wash function complited. (OLED) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 51 13.2V of Power Screen normal voltage Speaker off Board Cancel OFF Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 52 (In case of Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

  • Page 53: Function Error

    Replace Main B/D (Power B/D don‟t have problem) If R/C operate, Normal Close operating? Explain the customer cause is interference from light in room. Replace R/C Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 54 RF Receiver ver Close is “00.00”? Replace MR19 Close Change the RF Receiver assy * If you conduct the loop at 3times, change the M4. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 55 1pin Main B/D INSTART menu “NG”? ☞A24 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 56 Recognition error - S/W Version HDMI/ DVI, Optical Check and fix Replace Main B/D Fix in Recognition external device/cable accordance error with technical information Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 57 “Part related to nose” in the Owner’s then proceed as shown in the solution manual Manual. (For models without any fix information, provide the description) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 58 Revised date 17/17 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote Replace remote control control damage Stand Replace stand dent Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 59 Exchange Module (1) ~ (3) Inverter/ Module A-8/11 A-9/11 ~ Only using Exchange T-Con (1) ~ (2) T-con model A-10/11 Exchange Power Board(PSU) A-11/11 Continue to the next page Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 60 Motion Remote operation checking method How to use the Service remote control A24-A26 Check items after Main B/D replacement E. Etc Adjustment Test pattern – ADJ Key Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 61 Check LCD back light with naked eye Content date After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 62 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 © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 63 All Setting  Programmes  Programme Tuning & Settings  Manual Tuning All Settings When the signal is strong, use the attenuator (-10dB, - 15dB, -20dB etc.) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 64 Version checking method Content date <ALL MODELS> 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 65 1. Check the signal strength 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. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 66 Revised Content connection diagram (1) date <ALL MODELS> As the part connecting to the external input, check the screen condition by signal Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 67 A. Video error_Color error symptom date Revised Content Check Link Cable(EPI) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 68 Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 69 CABLE Color spread FFC connection problem CABLE Color spread FFC connection problem Due to foreign substance within CABLE Screen stop FFC PIN A - 2/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 70 Main IC problem Main Dark picture Dark left-side screen Top/bottom screen part Main Broken picture Picture problem due to tuner Inner side quality problem A - 3/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 71 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 72 Screen picture spread problem Screen problem No problem at the initial stage. Right-side Main During Heat run, right-side picture picture problem problem A - 5/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 73 BLU internal foreign matter inflow MODULE Internal matter 6 block image broken MODULE Image broken MODULE Image broken Screen sync signal broken A - 6/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 74 BLU Vertical spreading on cube screen in no MODULE Vertical smear signal MODULE Over color Screen contour part brightly Over color A - 7/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 75 Center of the screen 1 block dark MODULE Screen darkness MODULE Vertical bar Center Vertical Bar Darkness at the MODULE bottom of the MODULE internal BLU breakage screen A - 8/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 76 T-Con is defective and the picture below T-CON image broken the screen is broken A - 9/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 77 The entire screen is dark and bit noise T-CON Image Broken occurs The entire screen is dark and bit noise T-CON Image Broken occurs A - 10/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 78 Appendix : Exchange Power Board (PSU) No Light No picture/Sound Ok A - 11/11 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 79 Established B. Power error _No power symptom date Revised Content Check front Power Indicator date ST-BY condition: On or Off Power ON condition: Turn Off Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 80 5. LED voltage Check : P801, Pin 1-7 Picture Condition : VIVID (Back light 100) SK100 (AC input) 273.6V 334.4V all condition meets, Power Board OK. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 81 POWER OFF MODE checking method date <ALL MODELS> Entry method 1. Press the IN-START button of the remote control for adjustment. 2. Check the entry into adjustment item 3. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

  • Page 82: 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 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 83 3. 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. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 84 2.Check the standby 3.5V on the terminal 6 pin (③) 3.AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 85 Checking order to check motion remote/wifi KEY1 Checking order 1.Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2.Check the 3.5V on the terminal 22 Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 86 Standard Repair Process Detail Technical Manual Error Established E. Etc symptom date Revised Content How to use the Service remote control date 1. How to access the remote control Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 87 Digital EYE function ON/OFF For some Model, access to the Test Pattern TILT Used for screen tilting change (Access to the old PDP control mode) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 88 Connects to external input 1,2,3 COMP1,2 (Added function) Connects to Component 1,2 HDMI1,2,3,4 Connects to HDMI 1,2,3,4 (Add function) DVI (Add function) Connects to DVI Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 89 - 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. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 90 You can view 9 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!) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 91 Smart JIG Power Diagnosis Muitl Gender Guide (P/N : RAD32507801) (P/N : RAD33187801) A 29 (1/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

  • Page 92: Main Board

    24 Marking Check UK74,UK75 28Pin 28Pin 12Pin 12Pin 28Pin UK77,UK78 Cable Connection SK79 Includes 49UJ63 SM86 16/18Y/19Y 17Y/18Y 16Y/17Y 16Y/17Y/18Y/19Y (UH) (UH/SJ) (SJ/UJ/UK/SK) (UH/UK/UM A29 (2/19) (LH/LJ/LK/LM) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 93 LJ61/LJ68, LJ55/LJ58 SK80/SK85/SK95 UK78/UK75/UK77/SK79 „18 UK63/UK64/UK65/UK68/UK7050 LK57, 32/43/49LK54, 32LK61/62, 43/49LK61 „18 OLED B8, C8, E8, G8, W8 SM86 „19 UM73/UM74/UM76/UM79 LM63 „19 OLED C9/E9 A29 (3/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 94 “A: 2013 LCD POWER” 2014 ▶ Connect the Muiti Gender to the connector (black) as shown in picture 2 of the Smart JIG. A29 (4/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 95 - 20V Power Board : Change the switch to 24V of Smart Jig Voltage - 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage Power B/D Smart Jig Voltage Switch 13.2V/18V A29 (5/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 96 ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector A29 (6/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 97 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A29 (7/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 98 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A29 (8/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 99 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector A29 (9/19) Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 100 ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A29 (10/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 101 ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A29 (11/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 102 ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A29 (12/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 103 ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A29 (13/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 104 ▶ Connect the 18Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A29 (14/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 105 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A29 (15/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 106 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A29 (16/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 107 ▶ Connect the 12Pin Power Cable connector to the Muitl Gender JIG 12Pin connector ▶ When the NG LED turns on, the Power Board A29 (17/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 108 ▶ Connect the 12Pin Power Cable connector to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A29 (18/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...
  • Page 109 ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A29 (19/19) can be judged as defective. Copyright © 2019 LG Electronics. Inc. All rights reserved. Only for training and service purposes...

This manual is also suitable for:

70um7380pva70um7880pta

Table of Contents