Samsung SGH-E390 - Speaker Troubleshooting

SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-10
9-6. Speaker Part
Speaker does not work
Check the supply voltage
of U821.
Is the C826 = 3.8V ?
Check the VBAT or replace C826
No
Yes
Is the D-Amp(U821)
output working?
Check R825 and R826
Resolder R825/R826 or replace U821
No
Yes
END
Is Speaker working?
Change the Speaker
No
Yes
Yes
Check the connection
status of SPK
Re-solder the Speaker
No
Yes