LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 65 -
START
Check the state of
contact of speaker
Speaker
Working well!!
Check the Audio signal
R202,R204
No
Yes
Change the U103
Replace/Change speaker
No
Check the Power voltage
U201 = VBAT
And work properly ?
No
Yes
Change the U201
Yes
CHECKING FLOW