Flow Chart of Troubleshooting
10-1-4. Microphone Part
Microphone does not work
Yes
Is the assembled status
of microphone O.K?
Yes
No
Reassembled the microphone
Check the reference voltage on mic path
Yes
No
VR118 ≒ 2.0V ?
Yes
No
Is microphone ok?
Yes
END
| Resolder or change |
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| R150,R151,C156,R153,R152,C158 | ① | |
| R147,TA109,C149,R194,C161,C160 |
| |
|
|
|
|
|
| ② |
|
| Check U107 |
| |
|
|
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|
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