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5-6
SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram
Speaker does not work
Y
N
Y
Check the
soldered status of ear
jack connector
CN401
Resolder or change CN401
N
Y
Check the soldered
status of CN201
Change LCD-Keypad PCB
N
Y
Check soldered status
around CN401
Resolder or change
C422, ZD403, ZD404, C421, ZD402
N
Y
Is Speaker working ?
Replace the Speaker
END
5-6. Speaker Part