LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 109 -
4.18 Headset microphone
Headset
→
C210/C211
→
MIC2P, MIC2N (MSM6245)
→
Analog Switch(U401)
→
Speaker
Start
Make a Call with Equipment
Check the Headset or
Connector
YES
Hook_KEY is detected ?
YES
Check the Voltage of
MICBIAS whether 1.8 V?
YES
Sine wave appears at
C210 , C211
YES
NO
Change the Main Board
NO
Change the Main Board
NO
Change the Headset
Содержание U370
Страница 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...
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Страница 178: ...Note ...
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