LG 49UF771V Service Manual page 88

Standard Repair Process Detail Technical Manual
Error symptom
Content
<ALL MODELS>
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A. Video error_Video error, video lag/stop
TUNER input signal strength checking method
Established
date
Revised
date
Advanced Channels
Manual Tuning
A3

Channel Tuning
When the signal is strong,
use the attenuator (-10dB, -
15dB, -20dB etc.)
LGE Internal Use Only
A3