LG -P940 Service Manual page 109

4.12.2 Receiver troubleshooting
Receiver control signals are generated by OMAP4430 (U501) and Power is supplied byTWL6040(U803).
Change theTWL6040(U803)
LGE Internal Use Only
START
Check the receiver sound
(loop back mode).
And reconnect Top FPCB
connector on main-board.
Is receiver sound OK?
No
Change receiver
ok?
No
Is speaker sound OK?
No
Change the mainboard
Yes
END
Yes
END
Yes
END
- 109 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Only for training and service purposes