Audio Faults - Nokia RH-17 Series Troubleshooting - Bb

RH-17
Troubleshooting — BB

Audio faults

Audio
faults
Is the earpiece
working?
Yes
Yes
Audio
faults 2
Page 40
No
Change earpiece.
Is it working now?
Set phone in LOCAL mode.
Use phoenix "Baseband
Audio Control" and set the
following: Enable Tx,
Enable Rx, Select MIC2
(0dB), Enable earpiece and
enable digital loop back
only.
Inject a 1KHz sine signal
200mVp-p on XMIC
Is the signal
comming out of the
UEM on EARP and
EARN?
Nokia Corporation
CCS Technical Documentation
Yes
No
Check L103, R112,
R162, R163, R152,
No
R150, C166, C154,
C155, C153, C156.
If OK change the
Yes
Check R180, R17.
If OK then change
Confidential
Retest
UEM.
earpiece.
Issue 1 04/2003