Fault-Finding Charts For Receiver Chain - Nokia RH-42 Troubleshooting Instructions

CCS Technical Documentation

Fault-finding charts for receiver chain

AMPS
Apply 881.49MHz = ch
383 -116dBm, 8kHz
dev, 1 kHz sine to
external RF connector
Connect HS to cellular
tester. Open AF: 1kHz
sine meas SINAD
Check UHF Vc (from
C773) V: 1.8...2.1V
Check RXVHF Vc
Apply 881.49 MHz
-30dBm sine signal to
external RF connector
Issue 2 09/2003
X900
Y
AF:>12 dB
N
Y
(from C740).
V:0.7...1.3
Y
X900
Nokia Corporation
Troubleshooting Instructions
AMPS RX chain OK
Y
Start troubleshooting
N
Start troubleshooting
N
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RH-42
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