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Flow Chart of Troubleshooting
9-12
9-7. Earphone Part
C514, C516 ≥ 100mV?
(When MP3 file is played)
Check UCP300
END
No
Yes
Yes
Receiver does not work
Replace the Earphone
No
Yes
Is Earphone working?
No
Resolder
U502, C514, C516
Yes
No
Resolder IFC600
IFC600 pin 5, 7 short?
Yes
U502 pin 1A, 2A ≥ 100mV?
(When MP3 file is played)
No
Resolder U501
U501 pin 5, 6 ≥ 200mV?
(When MP3 file is played)
OK
Resolder L601, L602, L603
Check the circuit
from IFC600 pin 5, 6, 7
to U501
Not OK