User Guide

PAMS Technical Documentation 10. Troubleshooting
NSD-5
Issue 1 05/02 Nokia Corporation Page 45
RX Troubleshooting
Troubleshooting
Check components in the receiver chain from Duplexer Z727, LNA V701 and Mixer N701,
the 128.1MHz CDMA IF SAW filter Z728 and RIF N730. Check that the RX_IF_AGC RIF
Pin D2 changes as the receiver input signal level is adjusted. Check the Rx VHF LO RIF
C517. See plot diagram (following) and the Synthesizer Block.
Note: If any of these components are damaged and are replaced, then the Rx IF AGC second-order
curve must be returned.