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4. Troubleshooting
Audio problems
Receiver
Turn on the phone. Go to service test menu; choose "12. Receiver" presses any key to check that the
Receiver is working properly.
Check Receiver and receiver cconnector (Fig 3.1)
Microphone
1. Turn on the phone. Go to service test menu; choose "5. Echo Loop" (An audio loop is activated)
check that the Microphone is working properly.
Check that the Microphone (Fig.4.1) is not mechanical damaged, dirty or oxidized.
Replace it if necessary.
Fig.3.1
Fig.4.1
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