LG KG200 Service Manual - Page 23

Audio problems

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4. Troubleshooting Audio problems Receiver Turn on the phone. Go to service test menu; choose "11. Receiver" presses any key to check that the Receiver is working properly. Check Receiver and receiver cconnector (Fig 3.1) Fig.3.1 Microphone 1. Turn on the phone. Go to service test menu; choose "4. Echo Loop" (An audio loop is activated) check that the Microphone is working properly. Check that the Microphone Pad (Fig.4.1) is not oxidized or dirty. Clean it if necessary. Check that the Microphone (Fig.4.2) is not mechanical damaged, dirty or oxidized. Replace it if necessary. Fig.4.1 - 24 - Fig.4.2

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4. Troubleshooting
- 24 -
Audio problems
Receiver
Turn on the phone. Go to service test menu; choose “11. 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 “4. Echo Loop” (An audio loop is activated)
check that the Microphone is working properly.
Check that the Microphone Pad (Fig.4.1) is not oxidized or dirty. Clean it if necessary.
Check that the Microphone (Fig.4.2) is not mechanical damaged, dirty or oxidized.
Replace it if necessary.
Fig.3.1
Fig.4.1
Fig.4.2