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Standard Repair Process
LCD TV
☞ A6
Check RF Signal level
Normal
Signal?
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Normal
Picture?
Y
Close
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Only for training and service purposes
A. Picture Problem
Error
symptom
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→ Set up→ Support → Signal Test )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Y
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
Normal
Picture?
N
N
Contact with signal distributor
or broadcaster (Cable or Air)
Picture broken/ Freezing
☞ A7
Y
Check
SVC
S/W Version
Bulletin?
S/W Upgrade
Normal
Picture?
Close
3
Established
2010. 12 .14
date
Revised date
■ Menu→Setup →Booster
Booster menu
N
On→Off: Check
Off→On: Check
Y
Tuner soldering
N
Y
3/14
Y
Normal
Close
Picture?
N
Check
Replace
Main B/D
LGE Internal Use Only
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