LG 50UH63 Series Service Manual page 56

Standard Repair Process Detail Technical Manual
symptom
Content
<ALL MODELS>
MENU  Quick  Channel
DTV Antenna
Satellite Antenna
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
A. Video error_Video error, video lag/stop
TUNER input signal strength checking method
 Channel Tuning  Auto Tuning
Established
date
Revised
date
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
A3
A3
LGE Internal Use Only