Nokia RH-41 Series Troubleshooting Instructions page 23

CCS Technical Documentation
Check RF level at RX
IF filter input at
135.54MHz (Z830)
Y
Check RF level at RX
IF filter output at
135.54MHz
Y
Check RX I and Q
signals at I: J801(+),
J803(-) and Q:
J804(+), J802(-)
Y
Check UEM and start
baseband
troubleshooting
Issue 2 09/2003
Check RF level at
J751 and J752 at
N
2034.06MHz
Y
Change Taco (N801)
Taco
Change RX IF filter
N
(Z830)
Check RF level by
L730 without having
N
electrical contact at
271.08MHz
Y
Taco
Change Taco (N801)
Figure 10: Fault tree. AMPS
Nokia Corporation
Troubleshooting Instructions
Start synthesizer
N
troubleshooting
Note! Check all
discrete
components and
voltages around
Taco.
Start synthesizer
N
troubleshooting
Confidential
RH-41
Page 23