LG -E615 Service Manual page 84

4.17.3 Speaker/Speaker Phone path
MSM7225A LINE_OP, LINE_ON -> C6014,C6015(TP1) -> M6001TPA2055D3 :
Audio Subsystem)-> FB9003, FB9004(TP2) -> CN11002
Connect the phone to network
equipment and set-up call.
Can you hear the 1KHz TONE?
LGE Internal Use Only
START
Set-up 1KHz tone out.
No
The Sine wave appears at
C6014,C6015 pad(TP1)
No
The Sine wave appears at
FB9003, FB9004(TP2)?
No
Change the U2001 or
Change the main PCB
Yes
END
Yes
Re-contact or Change the SPK/RCV module
Yes
Change the SPK/RCV module
- 84 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Only for training and service purposes