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4.20 Headset microphone
Headset → C210/C211 → MIC2P, MIC2N (MSM6245)
Change the headset and retry
Change the Main board
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Only for training and service purposes
Start
Make a call
NO
HOOK_KEY is detected?
Yes
MICBIAS is biased
by 1.8V?
Yes
Sine wave appears at
C210/C211 ?
Yes
4. TROUBLE SHOOTING
OK
END
NO
Change the MAIN board
NO
Change MAIN board
NO
Change the headset or
Main board and retry.
- 115 -
YES
LGE Internal Use Only
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Table of Contents
Troubleshooting
