Nokia NKC-1X Series Troubleshooting Instructions page 22

NKC-1X
Troubleshooting Instructions
Apply 881.49 MHz =
ch 383 -116dBm ,
8kHz dev, 1 kHz sine
signal to external
RF-connector X900.
Y
Connect HS to cellular
tester, open audio
AF: 1 kHz sine signal,
meas SINAD
AF: >12 dB
Check UHF Vc (from
C773) V: 1.8 ...2.1 V
Check RXVHF Vc
(from C720). V: 0.7
...1.3
Apply 881.49 MHz
-30dBm , sine signal
to external
RF-connector X900.
Page 22
Figure 11: Fault tree. AMPS
Y
N
N
N
Start synthesizer
troubleshooting
Y
N
Start synthesizer
troubleshooting
Y
Nokia Corporation
CCS Technical Documentation
AMPS
RX-chain OK
Note!
These tests are done in
local mode by using RF
Test UI.
Issue 1 02/03