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4.9 Speaker Trouble
CHECKING FLOW
TEST POINT
TP1
TP2
TP5
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
START
(Play the mp3 file)
Check the state of
contact of speaker
Yes
Check the Audio Input signal
TP1, TP2
Yes
Check the TP5
(AMP Input Power)
Yes
OK
U603
Figure 4.9
- 83 -
4. TROUBLE SHOOTING
No
Change speaker
No
Check AIT817(U602)
No
Check LP3907(U600)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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