NHM–7
Troubleshooting Instructions
PAMS Technical Documentation
Page 15
Issue 1 10/2001
Nokia Corporation
Connect EXT audio signal 1kHz
(sine) (¨200mVp–p) in XMICP pads
and Ground in XMICN
Measure sine signal
from earpiece pads.
Is it ~880mVp–p ?
Earpiece
2
Measure sine signal
from UEM (R156)
Is it ~130mVp–p ?
No
Retest
Yes
Change UEM.
Yes
Check R156, C153,
C155, R166, R167,
C163, R161 and
line.
No
Summary of Contents for NHM-7 series
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