LG 50LN54 Series Service Manual page 43

Standard Repair Process
Error
LCD TV
symptom
☞ A5
Check RF Signal level
Check satellite setting.
- Check LNB frequency.
Normal Y
- Check satellite
Signal?
- Check Satellite connection
(DiSEqC, motor, etc...)
N
Contact with
signal distributor
or broadcaster
(Cable or Air)
Close
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Only for training and service purposes
A. Video error
Tuning fail, Picture broken/ Freezing
Check RF signal cable (DVB satellite signal or not)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ Set-Top-Box, Different maker TV etc
Change satellite setting
(match with installed ANT)
☞ A6
Y
Check
Normal
S/W Version
setting?
N
N
Normal
Picture?
Y
Close
Established
2013. 01 .09
date
Revised date
N
Check
SVC
Tuner soldering
Bulletin?
Y
S/W Upgrade
N
Normal
Picture?
Y
Close
4/14
Replace
Main B/D
LGE Internal Use Only