LG 27UL850 Service Manual
Chassis lm8ba
Hide thumbs
Also See for 27UL850:
- Owner's manual (35 pages) ,
- Manual (8 pages) ,
- Quick setup manual (6 pages)
Related Manuals for LG 27UL850
Summary of Contents for LG 27UL850
- Page 1 Internal Use Only LED MONITOR SERVICE MANUAL SERVICE MANUAL CHASSIS : LM8BA MODEL : 27UL850 27BL85U CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69413817(1811-REV00)
-
Page 2: Table Of Contents
SPECIFICATION ..................4 Firmware Upgrade Method ............... 8 BLOCK DIAGRAM ................. 14 EXPLODED VIEW .................. 15 DISASSEMBLY ..................16 TROUBLE SHOOTING GUIDE .............. 19 - 2 - Copyright © LG Electronics. Inc. All rights reserved. Only for 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 for training and service purposes... -
Page 4: Specification
Request to regulation team Not applied Accessory Box Applying module list P/No Specification Checked 27” UHD MODULE (LG Display) (Refer to BOM) EAJ63750101 LM270WR3-SSA1 - 4 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes... - Page 5 4000 3840 266.64 3840 x 2160 Checked V(Lines) 2222 2160 H(Pixels) 133.32 4000 3840 3840 x 2160 Checked V(Lines) 2222 2160 Recommended Timing - 5 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes...
- Page 6 V(Lines) 2250 2160 Recommended Timing (HDMI1.4) , HDMI ULTRA Deep Color : OFF Recommended Timing (HDMI2.0) , HDMI ULTRA Deep Color : ON - 6 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes...
-
Page 7: Block Diagram
BLOCK DIAGRAM - 7 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes... -
Page 8: 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. - 8 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes... -
Page 9: Disassembly
1. Put the set on a soft cloth 1-1. Tool 2. Pull the button downward and disassembly the stand 3. Remove screw 4ea - 9 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes... - Page 10 4 Open the Back cover with jig (first point is middle of top) 5. Disassembly the FFC, Lamp, control D and hera 6. Remove screw 3eaandChassis assy - 10 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes...
- Page 11 7 . Reversed Head assyand Disassembly deco 8 . Reversed Head assyand Remove screw 9ea 9. LCD Module - 11 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes...
-
Page 12: Troubleshooting Guide
Replace IC405,IC403, IC404 Check IC405,IC403, IC404Output &Recheck Voltage Level (5V,1.8V, 1.15V) Check X200 Clock 12MHz Replace X200 Replace IC202 Flash Memory Copyright © 2010 LG Electronics. Inc. All right reserved. -12 - LGE Internal Use Only Only for training and service purposes... - Page 13 Replace IC402 & 10V(JP209) Recheck Check e-DP Cable for Replace Cable Damage or Open Conductors Replace T-Con Board or Module Copyright © 2010 LG Electronics. Inc. All right reserved. -13 - LGE Internal Use Only Only for training and service purposes...
- Page 14 Check HDMI 5V from Source(PC) Re Download EDID Data (JK100 and JK101) (Pin No. 18) Replace Main Scaler (IC200) Copyright © 2010 LG Electronics. Inc. All right reserved. -14 - LGE Internal Use Only Only for training and service purposes...
- Page 15 Check JK801 for proper Replace Connector connection or Damage Check AUX Signal (R137 or R142) Replace Main Scaler (IC200) Copyright © 2010 LG Electronics. Inc. All right reserved. -15 - LGE Internal Use Only Only for training and service purposes...
- Page 16 Check JK801 for proper Replace Connector connection or Damage Check AUX Signal ReplaceIC801 (R876 or R890) Replace Main Scaler (IC200) Copyright © 2010 LG Electronics. Inc. All right reserved. -16 - LGE Internal Use Only Only for training and service purposes...
- Page 17 Check the sound setting in Setting like a right image. Do re-soldering Check JK501 Soldering Replace Main Scaler (IC200) Copyright © 2010 LG Electronics. Inc. All right reserved. -17 - LGE Internal Use Only Only for training and service purposes...
- Page 18 Check Speaker Cable is Connect the Cable connected correctly Replace Main Scaler Replace Speaker and (IC200) Check the status Copyright © 2010 LG Electronics. Inc. All right reserved. -18 - LGE Internal Use Only Only for training and service purposes...