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37LK430, 37LK430A, 37LK430N, 37LK430U (CHASSIS:LD01U) - LG TV Service Manual (repair manual). Page 81

Read LG 37LK430 / 37LK430A / 37LK430N / 37LK430U (CHASSIS:LD01U) Service Manual online

MENU -
Æ red key(customer support -Æ signal test
-
Æ select channel 
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. 2 .07
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