Nokia RM-11 Series - Top RF-Related Failures Seen in FINUI

CC Technical Documentation Troubleshooting - RF
RM-11
Issue 2 09/2005 ©2005 Nokia Corporation Confidential Page 29
Top RF-related Failures Seen in FINUI
Test Failed What to Check
RF MS TX Rho PCS CH600 Rho problem is very likely caused by elevated spurious
levels in UHF LO and/or by VHF Tx LO in N601. Establish
a call and verify the degraded Rho. Next probe the LO
output for spurs.
RF MS RX FER PCS CH600 At this stage, FER is most likely caused by a poor RF
connection. Perform a conductive RSSI measurement
with sector power at -65dBm (low LNA gain) and -
100dBm (high LNA gain).
RF MS RX FER CELL CH384 At this stage, FER is most likely caused by a poor RF
connection. Perform a conductive RSSI measurement
with sector power at -65dBm (low LNA gain) and -
100dBm (high LNA gain).
RF MS SINAD SINAD is measurement of a mobile terminal’s audio
quality in an AMPS call. Hence, a secured audio plug is
needed to be checked for any connection problem.
Verify this on the bench in an AMPS call.
RF GPS Test Mode 3 Inject signal and test SNR with the GPS self-test. If
SNR is out-of-limits, then probe chain.
RF MS TX Limiting Po PCS CH25 Tx limiting power is most likely caused by a poor RF
connection.
RF MS TX Limiting Po CELL CH1013 Tx limiting power is most likely caused by a poor RF
connection.