4. TROUBLE SHOOTING
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4.17.2 Headset path
MSM7225A HPH_R, HPH_L -> C6009, C6011(TP2) -> M6001 (TPA2055D3: Audio Subsystem) ->
R6009, R6010 -> FB6008, FB6007(TP1) -> CN10000( 3.5pi Ear-jack )
Yes
No
START
END
Connect the phone to network
equipment and set-up call.
Set-up 1KHz tone out.
No
Yes
Re-Solder & Change the main PCB
No
Change the M6001 (Audio Subsystem)
Yes
Change the U2001 or
Change the main PCB
Can you hear the 1KHz TONE?
The sine wave appears at
FB6008, FB6007(TP1)?
The sine wave appears at
C6009, C6011(TP2)?