LG 34WN80C Service Manual Download Page 1 | Manualshive

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P/NO :

CHASSIS :

MODEL :

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

SERVICE MANUAL

Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

CONFIDENTIAL

P/NO : MFL69413820 (1908-REV00)

LED MONITOR

SERVICE MANUAL

LM20G

34WN80C

34WN80C-BK

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Summary of Contents for 34WN80C

Page 1: ... CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL Copyright 2018 LG Electronics Inc All rights reserved Only training and service purposes CONFIDENTIAL P NO MFL69413820 1908 REV00 LED MONITOR SERVICE MANUAL LM20G 34WN80C 34WN80C BK ...

Page 2: ...t LG Electronics Inc All rights reserved Only training and service purposes CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 BLOCK DIAGRAM 7 EXPLODED VIEW 8 TROUBLE SHOOTING GUIDE 9 TRANING MANUAL APPENDIX CONTENTS ...

Page 3: ...l 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 antenna terminals phone jacks etc If the exposed meta...

Page 4: ... 11 Power Rating Input DC 19V 7 0A 12 Accessory Box 8 Power Code Length 1 55 0 05 M Refer to Suf power cord table Weight Color Black Item Content Remark 1 Customer BRAND BRAND LGE Product 2 User Model Name 34WN80C 3 Sale region Worldwide 4 Feature 34 LCD MONITOR IPS Curved WQHD HDR 5 Chassis Name LM20G PCB Product spec Adjustment spec 6 General Scope External SW Adj Joystick switch Up Down Left Ri...

Page 5: ...3 5 49 702 1680 1280 72 128 200 1280 x 800 V Lines 59 81 831 800 3 6 22 7 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 V Lines 60 02 1066 1024 1 3 38 8 H Pixels V Lines 9 H Pixels 108 60 1800 1600 24 80 96 1600 x 900 V Lines 60 1000 900 1 3 96 148 5 67 5 2200 1920 88 44 148 1920 x 1080 60 1125 1080 4 5 36 146 25 65 29 2240 1680 104 176 280 1680 x 1050 59 954 1089 1050 3 6 30 11 H Pixels V ...

Page 6: ...TS3DV642 Switch USB Type C EDID EEPROM HP Out L R Out HP AMP DP Signal PD Controller MUX DP USB 3 0 USB HUB USB 3 0 UP USB 2 0 DN for Billboard CC communication WLED_ENABLE WLED_ADIM Flash Memory 8MBIT SPI HDMI 2 0 E DP DC DC USB3 0 2 0 DN VBUS 5V 0 9A Sub Micom LPC11U68JBD48 DP1 4 UART for HW Calibration I2C for Scaler FW update USB2 0 DN USB 2 0 UP I2C for PD Controller control PD FW update VBUS...

Page 7: ...ty 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 910 900 510 330 500 200 300 400 540 A3 ...

Page 8: ...Power Replace X200 N Check JP600 JP601 Voltage Level 19V Check Power connector OK Replace Adapter Y N Y Check IC600 IC403 IC404 Output Voltage Level 5V 1 8V 1 15V Replace IC600 IC403 IC404 Recheck Y N Check X200 Clock 12MHz Check IC601 Output Voltage Level 3 3V Replace IC601 Recheck N Y Replace IC202 Flash Memory Y ...

Page 9: ...ce purposes 2 No Screen on Replace Cable N Module Back Light On Check IC 601 Replace Main Scaler IC Y N N Check Panel Power 10V JP209 Replace IC402 Recheck Y N Check e DP Cable for Damage or Open Conductors Check WLED_ENABLE High IC600 601 Pin 27 Replace T Con Board or Module Y ...

Page 10: ...vice purposes 3 No Display HDMI Replace Main Scaler IC200 Check input signal format Is it supported Check JK100 JK10 1 for proper connection or Damage Replace Connector Y N Check HDMI 5V from Source PC JK100 JK101 Pin No 18 Y Y Check HDMI Cable for Damage or Open Connector Y ...

Page 11: ...training and service purposes 4 No Display DP Replace Main Scaler IC200 Check input signal format Is it supported Check JK102 for proper connection or Damage Replace Connector Y N Y Y Check DP Cable for Damage or Open Connector Y Check A UX Signal R137or R142 ...

Page 12: ...Only training and service purposes 5 No Sound H P Replace Main Scal er IC200 Check the Input source Check the sound setting in PC Setting like a right image Y N Check JK501 Soldering Do re soldering Y N Y Check Cable status for Damaged or Open Connector Y ...

Page 13: ...Only training and service purposes 6 No Sound Speaker Check the Input source Check Speaker Cable is connected Connect the Cable correctl y Y N Replace Speaker and Check the status Replace Main Scal er IC200 N Y Check Cable for Damaged or Open Connector Y ...

Page 14: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 34WN80C SVC Training Manual LGE Internal Use Only ...

Page 15: ...1 WLED 30 000Hrs Function Picture Mode Audio Bluetooth Paring SPK Output W Smart Energy Saving FreeSync 1ms Motion Blur Reduction X X SPK Dolby Infinite Surround Clear Voice II AVL O X X X X X X X Feature 3D PBP Super Resolution Over Drive DFC Black Stabilizer USB Quick Charge USB FW Update HDR10 Window10 Remo con X X O O O O X O O O X Jack Position RF AV In D SUB HDMI USB Type A USB Type C DP PC ...

Page 16: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 a 모델 개요 ...

Page 17: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 b 모델 개요 Design ...

Page 18: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 b 모델 개요 Design ...

Page 19: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 c 모델 개요 Accessory ...

Page 20: ...Bracket Common 2 Cabinet assy Cabinet Common 5 Backcover Assy Backcover New 7 Stand Base Assy Base Cover 34WL85C Common Base Casting 34WL85C Common Foot Rubber Common 1 Module 34 LGD 34WL85C Common 4 IR PCB Assy Joystick button 34WL85C Common Joystick PCB 34WL85C Common Button Bracket 34WL85C Common 6 Stand Body Assy Hinge Cover 34WL85C Common Others 34WL85C Common 8 Cable Holder 34WL85C Common Si...

Page 21: ...ck Cover Assy Material ABS HF350 Black Texture LG1002 G Carving High glossy Vent hole One click HAS ready Middle Cabinet Material ABS HF350 Black Texture LG1002 G Side High Glossy Textur e High Glossy High Glossy Textur e ...

Page 22: ...service purposes 2 모니터 분해도 1 1 Rear Frame Common Use 1 2 Main PCB 1 3 Cable Side Cover R Common Use 1 4 Cable Side Cover L Common Use 1 5 One Click Button Common Use 1 1 Rear Frame 1 2 Main PCB 1 3 Cable Side Cover R 1 4 Cable Side Cover L 1 5 One Click Bracket Chassis Assy DMS ...

Page 23: ...pulling down the butt 1 Place the monitor s screen face down on a front packing or soft jig plate 1300R 1 1 Tool Plastic Jig and Driver 1 Preparation 2 Stand A ssy Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 24: ...ghts reserved Only for training and service purposes 1 Using a screw Driver remove screws 4ea 2 Using plastic jig disassemble a back cover Sequence is like a below 3 Back cover A ssy Disassemble the back cover Latch Type 4 Disassembly method ...

Page 25: ...n remove side cable cover Æ Remove Cable connector by hand 4 Disassembly method 4 Chassis A ssy Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 2 Disassemble Rear Shield Assy Screw 2EA ...

Page 26: ...4 Disassembly method Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 Disassemble the Cabinet assy screw 14ea ...

Page 27: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 4 취급 주의 ...

Page 28: ... USB Type C EDID EEPROM HP Out L R Out HP AMP USB Type A USB 3 0 DP Signal PD Controller MUX DP USB 3 0 USB HUB USB 3 0 UP USB 2 0 DN for Billboard CC communication WLED_ENABLE WLED_ADIM Flash Memory 8MBIT SPI HDMI 2 0 E DP DC DC USB3 0 2 0 DN VBUS 5V 0 9A Sub Micom LPC11U68JBD48 DP1 4 USB Type A USB 3 0 UART for HW Calibration I2C for Scaler FW update USB2 0 DN USB 2 0 UP I2C for PD Controller co...

Page 29: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 5 Main PCB Layout DP HDMI1 USB DOWN USB DOWN HDMI2 USB Type C Power H P out LED DRIVER eDP 30P Control Key ...

Page 30: ...t according to BLU spec Location No IC600 IC601 5 Headphone AMP Amplify audio signal from Main IC and then provide amplifying signal to H P interface Location No IC503 6 USB C PD Controller Set the signal from USB C input and communicate with Source Device Location No IC800 7 PM IC Switching PD Vout controlled by PD profile Location No IC801 8 USB Hub IC function of HUB to the PC should be connect...

Page 31: ...2 Product Information How to operate control key Joystick Key Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 32: ...d 8 34mm x 2 5mm Connector Reference Mobile Micro USB 5p 7 4mm x 2 35mm Various Function Support USB 3 1 3 0 Power Delivery 60Watt Display delivery Alternate Mode By using C C channel pin various Power Delivery 5V 9V 15V 19V Additional function Ready ex Audio Accessory mode headphone mic and etc Detailed View Connection USB Type C support external device laptop mobile device Display function Power...

Page 33: ...lay mode function Data transmission speed may be slow because USB connection would be USB2 0 NOT USB3 0 N A Fr to con Devic monit N A N A N A om PC perspective it is identical necting to the existing USB hub e There is no power supply from or to PC Support Common Support may not be possible depending on other device spec Max 5V 0 9A each port Power delivery Function Existing USB Function Data Tran...

Page 34: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 2 Product Information HDMI Compatibility Mode ...

Page 35: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 2 Product Information OnScreen Control ...

Page 36: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 2 Product Information OnScreen Control ...

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