3. TROUBLE SHOOTING
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Only for training and service purposes
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3.8.2 Speaker
It’s trouble shooting guide for no sound case.
Speaker control signals are generate by MT6577(U201), TPA2015(U501,U502)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.
(C508,C507,C506,C505,
FB504,FB502,FB501,FB503,
L1001~L1004)Speaker Sound OK?
No
No
No
END
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