Audio Faults - Nokia RH-6 Series Baseband Description & Troubleshooting

RH-6
6 - BB Description & Troubleshooting

Audio faults

HP earpiece failure
Audio Faults
Is HP earpeice
working
Yes
Audio
Faults 2
Page 58
Company Confidential
No
Try change
earpiece. Is it
working now?
No
Set phone in LOCAL
mode. Use Phoenix
Audio Test. Set EXT IN,
HP out, LOOP ON
Measure DC offet
voltagefrom earpiece
pads. Is it ~1.38V to
GND?
Measure MICB2
voltage from XMICP
pads. Is it ~2.2V?
Yes
Earpiece 2
© 2003 Nokia Corporation.
CCS Technical Documentation
Yes
Retest
Check L150,
No
R151,C179,C180
and line. If OK
change UEM.
No
Audio
Faults 3
Issue 1 10/2003