Nokia RH-41 Series Troubleshooting Instructions page 25

CCS Technical Documentation
Check input level of
diplexer (Z907)
Y
Check input level of
duplex filter (Z962)
Y
Check RF level at
LNA input (at duplex
filter RX output port)
Y
Check RF level at
RX1900 band filter
(Z850) input
Y
Issue 2 09/2003
Change EXT RF
N
connector
Change diplexer
N
(Z907)
Change duplex filter
N
(Z962)
Check voltage at
C854 out (V850 in),
N
V: about 2.7V
Nokia Corporation
Troubleshooting Instructions
Note! Check all
soldering and
components in
antenna circuit before
Note! Check all
soldering and
discrete components
replacing Taco, check
all solderings and
components around
Change Taco (N801)
Confidential
RH-41
changing.
of front end.
Taco
Note! Before
V850.
Taco
Page 25