Microphone Part; Speaker Part - Samsung SGH-E105 Service Manual

SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

5. Microphone Part

Microphone does not work
Check the assembled
status of microphone.
Check the reference
voltage on mic path
C418 =2.5V
Is microphone ok?
END

6. Speaker Part

Speaker does not work
Check the connection
status spk to CN200
Check the PIN 1 of
U402 = 'High' ?
Check U700, R201, R202
Is speaker ok?
END
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
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Reassemblage microphone
C400,R428,R409,R405,R406)
Resolder and check the board
4-6
resolder or change
Check U700
to board connector
Check U601
Change or resolder
U700, R201, R202
Change Speaker