User Guide

RH-23 Company confidential
CCS Technical Documentation
Page 52 Nokia Corporation. Issue 1 03/2004
Audio fault (headset microphone)
Figure 45: Audio (headset microphone) failure troubleshooting
No
Figure 19: Audio (headset microphone) failure troubleshooting
A
udios at headset microphone
are failing? (the failure is not in
the headset itself)
Set phone to LOCAL mode. Using Phoenix Audiotest select:
“Ext microphone in Ext speaker out” and set Loop “On”
Yes
Measure XMIC-biasing voltage from Pop-Port pin 10(XMICP)
to GND. Is it ~2.1V?
Check L102, C116, C150, R153, C159,
R158
,
R172 and line. OK?
Change UEM. OK?
Change UPP
No
No
No
Audio
faults 5
Yes
Audio
faults 4