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4.17 Headset microphone
Headset
→
C501
→
MIC2P(MSM6280)
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Start
EAR_SENSE_N
(VA401) is 0 V?
Yes
END
Make a call
Chan ge th e MAIN bo ard
VREG_MSME is biased
by 1.8V? (R400)
Chan ge th e Main PCB
Yes
OK
NO
NO
NO
Chan ge th e heads et an d retr y
YES
Chan ge MAI N board
Sine wave appears a t
C403 ?
Chan ge th e heads et or
Main board and retr y.
NO
Yes
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Summary of Contents for L705ix
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