Alcatel-Lucent MDR-8000, User Manual, Page: 73 / 130

5-15
Figure 5 - 6 Troubleshooting Radio RCV Alarms (Sheet 3 of 5)
A STATUS
Receiver Fault
Receiver On Line
Channel Fail
Radio Dade
Eye Closure
Low RSL
Path Distortion
Radio Frame Loss
RECEIVER
MDR-1083
05/20/05
Loss of radio frame from RCVR in I/O Interface RCVR circuits. Before
starting, check USI for receiver
Channel Fail
alarms and
Common
Command Path
alarm. If there is a
Channel Fail
alarm, troubleshoot and
clear that alarm first. If there is a Command Path alarm, troubleshoot and
clear that alarm second.
1. Verify farend radio configuration. Is farend radio hot-standby?
Yes, go to 2.
No, go to 4.
2. Check for Radio Frame Loss alarms on both A and B.
Are there Radio Frame Loss radio frame loss alarms on both A
and B?
Yes, go to 3.
No, only A or B has a frame loss alarm, go to 4.
3. Switch farend XMTRs. Do alarms clear?
Yes, replace farend off-line XMTR.
No, replace local I/O Interface on alarmed side. Do alarms clear?
Yes, stop. Procedure is complete.
No, replace local RCVR on alarmed side.
4. Replace local I/O Interface on alarmed side. Do alarms clear?
Yes, stop. Procedure is complete.
No, replace local RCVR on alarmed side.
Note
Al wa ys troubleshoot a nd cle a r the most severe a l a rm first.
Channel Fail is the most severe, follo w ed by R a dio Fr a me
Loss a nd Eye Closure.