Nokia 1508i Troubleshooting Manual page 12

1508i(RM-430)
RF Description and Troubleshooting
Nokia Customer Care
Figure 10: AMS dialog box
PCS Receiver Check from RF to IQ
When the AMS is ready for PCS RX troubleshooting, If the received power of the
DSPM Rfc RXTX is not close to the signal generator which means that there is a problem in
the RX line. First, test the DC points of the RX DC supply lines according to Table3. Then
test the RF trace.
1. Inject a –75 dBm CW signal of 1931.55MHz (i.e. 300kHz offset from 1931.25 MHz ).
2. Measure a 300 kHz tuning on the analyzer. You should see a typical -52 dBm IQ tuning for
CDMA pcs.
Issue 1
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