4. TROUBLE SHOOTING
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4.8.2 Speaker
It’s trouble shooting guide for no sound case.
Speaker control signals are generate by MT6575(U200), TPA2058(U401)If low level volume or breaking the sound, change
speaker module
START
Check the speaker. And reconnect
Speaker module
Change Main Board
Change Speaker Module?
Hear the sound to the Speaker?
Yes
Yes
Yes
Check Lower FPCB and Main PCB.
(R908,R909,
C410,C412, FB400,FB401)
Speaker Sound OK?
No
No
No
END