LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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4.10.5 Headset MIC(Voice call, Video Telephony )
START
Insert Headset.
Does the Headset icon
display on the main LCD?
Does it work properly ??
Try again from the start
END
YES
YES
YES
NO
NO
NO
Change the main Bíd
Does the level of R640
under 0.5Volt ?
NO
Does the level of R412
over 2.0Volt ?
YES
N0
Change the main B,d
YES
Check the signal level
at C406 at the putting
Audio signal in MIC
Resolder C406
and try again.
If fail again,
Change the main Bíd
A few hundred of mV
Of the signal measured
at C406 ?
Resolder R640,
And try again from the start
4
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2
3
5
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Z3X-BOX.COM
Содержание KT520
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