LG 24LM530S-PU Service Manual page 16

Standard Repair Process
Error Symptom
Content
. By using Digital signal level meter
☞ A5
. By using Diagnostics Setting on OSD
Check RF Signal level
Check whether other equipments have problem or not.
Y
Normal
Signal
→ DVD Player ,Set-Top-Box, Different maker TV etc`
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
N
Normal
Picture
Y
End
A. Video Error
Tuning fail, Picture broken/freezing
( Setting → Customer Support(red button on remote control) → Signal Test )
- Signal strength (Normal : over 50%)
- Signal quality (Normal : over 50%)
(By connecting RF Cable at other equipment)
Y
Normal
Picture
N
Contact with signal distributor
or broadcaster (Cable or Air)
☞ A6
N
Check SVC
S/W Version Bulletin
Y
S/W Upgrade
Normal
Picture
Y
End
Established date
Revised date
Check
Tuner soldering
N
Copyright © 2020 LG Electronics. Inc. All rights reserved.
Only training and service purposes.
3/13
Y
Normal
End
Picture
N
Replace
Main B/D