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Flow Chart of Troubleshooting
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9-15
9-7-2. Speaker Part (Lower Speaker)
There is no sound from the Speaker
Yes
Check the 3.5_detect part
(R752,R749,R747,R755)
and Resolder the wrong component.
Yes
Check the Upper speaker
in Test Mode.(*#0*#)
No
Resolder Lower module with SPK_PAD
Check the connection of
Lower SPK modules with
SPK_PAD,
No
Yes
Is there any signals at
L504, L505?
No
Resolder U500 or Replace U500
Yes
Replace the Lower SPK module.
No
Is the Lower Speaker
Working?
Yes
END
