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RM-12
Audio troubleshooting
Earpiece
Earpiece does n't work
START
C heck that earpiece
adapter m odule is held
by 4 snaps properly .
Is it OK?
C heck connector X100
on A-f ram e assem bly .
Is it OK?
Set Phoenix Audio R outing
to earpiece (H pEar) f rom a
working audio input MIC 1
(H pMic) or MIC 2 (H dMic).
Ensure that suitable MIC
Bias is set on.
Is D C bias
(~1.3Vdc at B100)
OK?
Are audio signals
f rom U EM to the
earpiece pads ok?
D oes the audio work
in a call?
EN D
Issue 1 11/2004
Note! OMAP, UEM and UPP are unchangeable.
C hange earpiece
NO
adapter m odule . C heck
and clean also contact
pads f or the earpiece.
YES
NO
C hange new A-f ram e
assem bly .
YES
YES
C heck L100, R 100,
NO
R 101, C 100, R 2101.
C hange com ponents if
needed.
YES
C heck L100, R 100,
NO
R 101, C 100, R 2101.
C hange com ponents if
needed.
YES
NO
C hange U PP
YES
COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
Nokia Customer Care
Is D C bias
NO
(~1.3Vdc at B100)
C hange U EM
OK?
YES
Are audio signals
NO
f rom U EM to the
C hange U EM
earpiece pads ok?
YES
53
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Troubleshooting
