Receiver Part - Samsung SGH-E390 Service Manual

Flow Chart of Troubleshooting

9-8. Receiver Part

Receiver does not work
Check the power of analog
switch(U822, U823).
Is L821, L822 = 3.8V?
Check the 'AUDIO_SEL' Pin
of U822, U823.
Is Pin 4, 9 "L"?
Check the connection
status of Receiver
Is Receiver working?
Yes
Yes
Yes
Yes
Yes
END
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No
Resolder L821, L822
No
No
Resolder the receiver
No
Replace the Receiver
9-14
Check UCP200