LG 42LW5400 - Page 42

A. Picture Problem
Picture broken/ Freezing
Y
N
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
Check
S/W Version
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Close
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→Setup→Manual Tuning)
- Signal strength (Normal : over 30%)
- Signal Quality (Normal: over 30%)
Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
Normal
Picture?
Y
Close
N
Standard Repair Process
Established
date
Revised date
3/13
LCD TV
Error
symptom
3
N
Normal
Picture?
Y
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