User Guide

NPM-2NX
Troubleshooting CCS Technical Documentation
Page 34 ãNokia Corporation Issue 1 07/02
Fault finding chart
Apply signal to ext.
antenna connector
f= 1960.029 MHz (ch
1000)
unmodulated
level= -50 dBm
Check signal level
at RX I/Q J808,
J809, J818, J819
OK
T DMA1900 RX is
OK
Not OK
Check signal level
at diplexer Z908
input
Replace external
antenna connector
X900
Not OK
OK
Check signal level
at duplex filter
Z962 input
Replace diplexer
Z908
Not OK
OK
Check signal level
atL NA V 804 input
Replace duplex
filter Z962
Not OK
OK