Fault Finding Chart For Uhf Synthesizer - Nokia NPM-2NX Troubleshooting Manual

NPM-2NX
Troubleshooting

Fault finding chart for UHF SYNTHESIZER

OK
Change
VCO G802
3.
No
2. No
Is frequency locked?
2006.16 - 2124
OK
Check loopfilter
components and
balun T801,
C863, C862, C861,
C860, R806,
R815, R814, R813
Page 60
4. No
START HERE!
Yes
MHz
1.
OK
No
Check VCO
No
Check resistor
operatig
voltage:
OK
2.78 V
ãNokia Corporation
CCS Technical Documentation
Change
SAFARI N801
No
Is EVM OK?
YES
low
OK
No
band
1
Check
loopfilter
components
R811
OK!
Yes
Low band:
Is divided No
signal OK?
Issue 1 07/02