Gsm1900; Fig 28 Fault Finding Chart - Nokia RH-13 Series Troubleshooting Manual

RH-13
Troubleshooting

GSM1900

A pply signal to ext.
antenna connector
f= 1960.06771 MH z
(ch 661)
unmodulated
level= -80 dB m
C heck signal level
at R X I/Q J808,
J809, J818, J819
Not O K
C heck signal level
at diplexer Z 908
input
C heck signal level
at duplex filter
Z 962 input
C heck signal level
atL NA V 804 input
Chart is continued on the next page.
Page 46
Figure 28: Fault finding chart
O K
Not O K
O K
Not O K
O K
Not O K
O K
ãNokia Corporation
CCS Technical Documentation
G SM1900 R X is
O K
R eplace external
antenna connector
R eplace diplexer
R eplace duplex
filter Z 962
X 900
Z 908
Issue 1 11/02