Nokia RH-17 Series Troubleshooting - Rf page 10

RH-17
Troubleshooting — RF
If Receiver is not working properly, turn on receiver in local mode using Phoenix and
check:
1 Turn on receiver with Phoenix, inject a signal into the receiver.
2 Check the RSSI level and AGC PDM according to Table 8.
3 Perform a visual inspection of the PWB under a microscope to check proper
placement, rotation, and soldering of components.
4 Use probing Tables 8 through 12 to measure signal levels of various points in the
chain and determine where in the chain the fault lies.
5 According to Tables 9, 10, and 12 check the LOs for proper frequency and ampli-
tude.
6 Ensure power supplies to receiver have correct voltage as per Table 13.
Page 10
Nokia Corporation
CCS Technical Documentation
Confidential Issue 1 04/2003