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Flow Chart of Troubleshooting
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9-13
9-7-1. Speaker Part (Upper Speaker)
There is no sound from the Speaker
Check the 3.5_detect part
(R752,R749,R747,R755)
and Resolder the wrong component.
Check the Upper speaker
in Test Mode.(*#0*#)
Yes
Yes
No
Check the connection of
Upper SPK modules with
CN705,
Connect Upper module with CN705
No
Yes
Resolder U500 or Replace U500
No
Is there any signals at
L500, L501?
Yes
No
Replace the Upper SPK module.
Is Upper Speaker Working?
Yes
END