Standard Repair Process
Error
Monitor Signage
symptom
No audio
Screen normal
C. Audio error
No audio/ Normal video
☞A13
Check user
menu >
Off
Speaker Out
Y
Cancel OFF
Check Speaker
disconnection
☞A14
N
Check 13.2V of
Power Board
(Pin no. 7/8
Replace Power Board and repair parts
N
Disconnection
Y
Replace Speaker
6
Established
date
Revised date
Y
Normal
voltage
N
Replace MAIN Board
End
Copyright ⓒ 2016 - 2017 LG Electronics Inc. All rights reserved.
Only training and service purposes.
6/11