LG 65LA970V Service Manual page 111

Standard Repair Process Detail Technical Manual
symptom
LCD TV
<ALL MODELS>
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
A. Video error_Video error, video lag/stop
TUNER input signal strength checking method
Content
Established
date
Revised
date
Settings  Set up
 select channel
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
A3
2013.01.31

Manual Tuning
LGE Internal Use Only
A3