Only For Training And Service Purposes - LG GM200 Service Manual

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