Nokia RM-4 Troubleshooting Instructions page 57

RM-4/RM-5
Troubleshooting Instructions
A
Set radio for 87.5
MHz
Voltmeter at
C373
0.7<Vdc<1.2
Yes
Set radio for 108
MHz
Voltmeter at
C373
1.6<Vdc<2.2
Set radio for 88
MHz
Apply signal from
generator, 88
MHz@50 kHz
deviation level :
-60 dBm at C360
ISSUE 1 02/2004
Check C373-
C374-R364-
No
V360-V361-L362-
L363
No
Measure audio
level at R385
480mVpp <Vac<
590mvpp@Sinus
Yes
Set radio for 107
MHz
Apply signal from
generator, 107
MHz@50 kHz
deviation level :
-60 dBm at C360
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CCS Technical Documentation
OK Replace N360
Check C360-
No C361-R371-
L360-L361
Measure audio
level at R385
480mVpp <Vac<
590mvpp@Sinus
OK
Radio OK
OK Replace N360
Check C360-
Fail C361-R371-
L360-L361
OK
Replace N360
57