LG 55LF5950 Service Manual page 58

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
<ALL MODELS>
Copyright 2015 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
Menu(QUICK SETTING)  Channels
Established
2015. 04. 23
date
Revised
2015. 04 .23
date

Channel Tuning  Manual Tuning  Antenna DTV
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
A6
LGE Internal Use Only