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4. TROUBLE SHOOTING
4.13.3. Loud speaker path (voice speaker phone, Multimedia play)
Loud speaker path as below:
MSM7200A Line_OP,ON Æ C368, C369 Æ IC1 (Audio Subsystem) ÆMain to LCD_FPCB
Æ
Speaker PAD
Start
The sine wave appear at
TP1, TP2 ?
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Set phone with speaker phone mode
or Play the multimedia contents
YES
Check the IC1&FPCB Con.
Or Change LCD_FPCB
NO
YES
Can you hear the tone?
Change the Speaker Module
NO
YES
END
The sine wave appear at
pads of speaker?
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