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LED MONITOR
SERVICE MANUAL
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70041016 (1712-REV01)
P/NO :
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual.
The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service
Manual.
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
LM61A
38UC99
38CB99
38UC99-WF
38CB99-WF
CONFIDENTIAL
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Summary of Contents for LG 38UC99
- Page 1 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 in this Service Manual.
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Page 2: Table Of Contents
SAFETY PRECAUTIONS ................ 3 SPECIFICATION ..................4 TROUBLE SHOOTING GUIDE ..............7 BLOCK DIAGRAM ................... 8 EXPLODED VIEW ..................9 DISASSEMBLY ..................10 DOWNLOAD ................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: Specification
Weight : 0.09kg±10%, Power Input: AC100~240V 50~60Hz, 2.5A Max Output: DC 19V 9.48A, 180W Adapter Color : White, Weight : 0.9kg±10%, without vinyl bag - 4 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 5 3840 3840x1600 V(Lines) 29.99 1680 1600 H(Pixels) 102.23 4128 3840 3840x1600 V(Lines) 59.99 1704 1600 H(Pixels) 531.25 128.69 4128 3840 3840x1600 V(Lines) 1716 1600 - 5 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 6 (Preset Mode) (KHz) (Hz) 640x480P 31.47 720x480P 31.47 1280x720P 1920x1080P 67.5 1280x720P 37.5 1920x1080P 56.25 2560x1080P 56.25 2560x1080P 720x576P 31.25 1920x1080I 33.75 1920x1080I 28.125 - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 7: Troubleshooting Guide
8) USB Hub IC : function of HUB to the PC, should be connect to the PC with USB-C/C or USB-C/A cable. Location No. : IC701 - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 8: Block Diagram
BLOCK DIAGRAM - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 9: 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. Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes. -
Page 10: Disassembly
1) Lay the set by the Curved PAD in Box 5) Disassemble the Back Cover (By using JIG) 2) Disassemble the Stand after pull the button to down - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 11 Bluetooth PCB cable, FFC cable, Speaker 7) Disconnect Control Assemble, BT PCB (Latch Type) 8) Remove the screw. (4EA) 9) Remove the screw. (18EA) - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
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Page 12: Download
DOWNLOAD Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes. - Page 13 Step4. Check a installed driver of Mstar ISP USB in device manager. (Installing a driver, port should be shown as “USB Serial Port”. however, port number can be different.) Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 14 Step6. Please click “Connect” button after connecting HDMI cable to HDMI1 port of monitor. If monitor can communicate normally ISP, the following pop-up should be shown as “Device Type is MX25L8005”. Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 15 Step6. After clicking “Read” button, the selected SW file should be opened to be updated FW. Please ensure that it matches the checksum(E3AD) between file name(E3AD). EX : UC99_MST9U11Q1_MSTAR_V2.07_E3AD_rev2728_160720.bin Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 16 2) Verify setting option ( The “File Area” of erase device should be selected in order to maintain system and factory calibration data. ) 3) Click “Run” button Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 17 4. Please remove the plastic, which is marked as ‘DO NOT USE’ on the monitor’s rear. 5. Please insert the USB memory stick to the USB 2.0 port. Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 18 1. After searching the highest version in LG_MNT folder of USB, the updating feature has been automatically performed regardless of the current version of monitor. [Common] When the updating feature is completed, monitor will turn off/on automatically after 3 seconds. Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
- Page 19 Q. The power turns off suddenly during updating PD FW under 50% status of progress bar, how can I do? After turning on the power, the updating will be progress again from the beginning percentage. Copyright ⓒ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.