Step 1. General Checking - Nokia RH-13 Series Troubleshooting Manual

RH-13
Troubleshooting

Step 1. General checking

C heck signal level
at R X band filter
Z 801 input
O K
C heck signal level
at mix1_A input
O K
C heck signal level
at IF filter Z 803
input (134.04
MH z)
O K
C heck signal level at
IF filter Z 803 output
(134.04 MH z)
O K
C heck signal level at
R X I/Q J808, J809,
J818, J819
O K
C heck U E M and
start baseband
troubleshooting
Page 32
Not O K
Not O K
Not O K Measure V R 4 from
L 812 and
L 811pads
C heck components
L 812,
L 811 etc.
Not O K
R eplace IF filter
Z 803
Not O K
Start synthesizer
troubleshooting
ãNokia Corporation
CCS Technical Documentation
C heck V R 4 supply
and components if
these ok => replace
Safari N801
R eplace R X band
filter Z 801
O K
Not O K
O K
Start synthesizer
troubleshooting
O K
R eplace Safari N801
R eplace Safari N801
Issue 1 11/02