CCS Technical Documentation
Troubleshooting Instructions
NSB-9
Issue 1 04/03
Nokia Corporation
Page 65
Check C174,
C179, C178, R163
and XAUDIO(7)
line. Are they OK?
No
IHF 2
Measure
differential sine
signal from IHF
speaker pads
J150, J151. Is it
~810mVpp?
Retest
No
Yes
Use Phoenix “Audio Routing and
Test Signals” test. Use internal
sine wave generator and set
signal frequency to 1kHz and
peak level to 4000 Hex
Change defect
part and retest
Change UEM
and retest
Yes
Содержание NSB-9
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