LG 60LN57 Series Service Manual page 62

Standard Repair Process
Error
LCD TV
symptom
☞ A6
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. Picture Problem (DVB-S/S2)
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)
☞ A7
Y
Normal Check
setting? S/W Version
N
N
Normal
Picture?
Y
Close
22 / 88
Established
2012. 12 .06
date
Revised date
N
Check
SVC
Bulletin? Tuner soldering
Y
S/W Upgrade
N
Normal
Picture?
Y
Close
Replace
Main B/D
LGE Internal Use Only