User Guide

CCS Technical Documentation BB Description & Troubleshooting
Company Confidential RH-4
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Audio
Faults 2
Audio
Faults 3
Earpiece 2
Is HP earpeice
working
Measure DC offet
voltagefrom earpiece
pads. Is it ~1.38V to
GND?
Measure MICB2
voltage from XMICP
pads. Is it ~2.2V?
Try change
earpiece. Is it
working now?
Retest
Check L150,
R151,C179,C180
and line. If OK
change UEM.
Set phone in LOCAL
mode. Use Phoenix
Audio Test. Set EXT IN,
HP out, LOOP ON
No
Yes
Yes
No
No
No
Yes
Audio Faults