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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. TROUBLE SHOOTING
START
Input Signal is
High(C217,C218
) ?
Output Signal is
High(C226,C227
)?
Replace Main Board
Replace Audio
AMP(U201).
Check Speaker ‘s
Contacts are clear.
Yes
Resolder/Replace
Speaker
No
No
Yes
No
Yes
Pin33,32 of sub
board
Connector
(CN103) is
No
Yes
No
Replace FPCB LCD
U201
C238
C247
C106
C107
Speaker contact
C103,C102 of
FPCB_Folder
are High?
Assemble
Yes
Replace
FPCB_Folder