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LED TV
55LX570H-U
Service manual
LG 55LX570H-U Service Manual
Chassis: la5cj
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LED TV
SERVICE MANUAL
CHASSIS : LA5CJ
MODEL : 55LX570H
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL69175105 (1612-REV01)
Internal Use Only
55LX570H-U*
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Summary of Contents for LG 55LX570H-U
Page 1
Internal Use Only LED TV SERVICE MANUAL CHASSIS : LA5CJ MODEL : 55LX570H 55LX570H-U* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69175105 (1612-REV01)
Page 2: Table Of Contents
SPECIFICATION ..................6 USB DOWNLOAD ................... 8 TROUBLE SHOOTING GUIDE ..............9 BLOCK DIAGRAM ................. 17 EXPLODED VIEW .................. 18 - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 3: Safety Precautions
An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 4: Servicing Precautions
- 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for 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. LGE Internal Use Only Only for training and service purposes...
Page 6: Specification
2) Humidity : ~ 80 % 1) Temp. : -20 ~ 60 deg Storage Environment 2) Humidity : ~ 85% - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 7
1360*768 47.712 60.015 85.50 VESA (WXGA) Х 1600*1200 75.00 60.00 162.0 VESA (UXGA) 1920*1080 67.50 60.00 148.5 HDTV 1080P - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 8: Usb Download
(2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number) - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 9: Trouble Shooting Guide
Check Q405 application circuit or Check Q405 output Voltage(12V) replace Q405 Replace Cable Check LVDS Cable Check LCD Module Control board - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 10
Replace L3001 Replace IC3000 or IC3000 Check tuner 1.8V power L3003 Replace Mstar(IC101) Check Mstar LVDS output or main board - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 11
Check tuner application circuit or Check IF Signal replace tuner. TU3001 #10, 11 Pin Check X201 Replace X201 and application circuit Replace IC101 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 12
After checking thoroughly all path once again, Can you see the normal waveform? You should decide to replace Mstar or not. - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 13
This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 14
After checking audio signal line, you should decide to replace item or not. check. Can you see the normal waveform? - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 15
This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 16
After checking audio signal line, you should decide to replace item or not. Can you see the normal waveform? Check the connector & Speaker - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 17: Block Diagram
BLOCK DIAGRAM - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 18: Exploded View
Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
This manual is also suitable for:
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