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NPM-2NX
Troubleshooting
3
Check loopifilter
components:
C848, R808, C847,
R807, C846, R820, C870
check also R826
BB PLL
The BB PLL generates RF clock to base band. It has two fixed frequencies 77.76 MHz in
Page 56
4
Change
SAFARI
OK
No
1 START HERE
OK
Is oscillator locked
to TDMA 268.08
3.No
or GSM 266.4
MHz
2.No
OK
Check resonator
components:
V801, C845, C871,
L818 and DC block C821
ãNokia Corporation
CCS Technical Documentation
Yes
2
OK!
Issue 1 07/02
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Table of Contents
Troubleshooting
