- 96 -
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
LGE Internal Use Only
Can you hear sound from
speaker ?
CHECKING FLOW (Tweeter)
Check spk module or change.
1
st
: Resolder FB201, FB202,FB203, FB204
2
nd
: Resolder CN201
Can you hear sound from
Earphone ?
Can you see the AC waveform?
(Check C228,C232 Pad.)
Resolder C228, C232, R215,R217, C220, C224
Resolder U103
Or Change Main Board.
No
No
Yes
Yes
No
Yes
Speaker
Working well!!