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55GA7900-UA (CHASSIS:LA37G) - LG TV Service Manual (repair manual). Page 101

Read LG 55GA7900-UA (CHASSIS:LA37G) Service Manual online

Menu 
Æ Settings 
Æ
Channel settings
Æ Manual Tuning 
When the signal is strong, use the 
attenuator (-10dB, -15dB, -20dB etc.)
Standard Repair Process Detail Technical Manual
TUNER input signal strength checking method
A. Video error_Video error, video lag/stop 
<ALL MODELS>
A6
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A6
2011. 12 .14
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