Carrier Problems - Lucent Technologies MERLIN LEGEND Release 6.0 Maintenance And Troubleshooting Manual

MERLIN LEGEND Communications System Release 6.0
Maintenance and Troubleshooting 555-660-140
Control Unit Problems

Carrier Problems

If the Offline or mloam command was used in Step 2, skip to Step 4.This
step applies only if the Block command was used in Step 2.
Determine when traffic has stopped. On the NetWare server, start the
mloam or wmloam tool, then go to the Link Status screen. View the line
stopped. Refer to the Network Manager's Guide for details.
Unplug the CTI link or perform appropriate maintenance.
! 
Carrier Problems
Typical carrier problems include power supply failure, sudden failure of one or
more modules, or system problems that cannot be isolated to a specific module.
If you find a problem with the carrier, it must be replaced; carriers cannot be
repaired in the field.
Removing the Faulty Carrier
Remove the control unit housing.
! 
If you need instructions, see "Removing the Control Unit Housing" on
page 1–18.
Back up system programming.
! 
If you need instructions, see System Programming and Maintenance
(SPM) (for disk backups) or Appendix D, "Backing Up with a Memory
Card."
Power down the system by turning off the components listed below,
! 
in the order given.
a Power supply on the basic carrier
b Power supply on each expansion carrier
c Auxiliary power units (if present)
Unplug the control unit from the AC outlet.
! 
. If the value there is 0, then traffic on the link has
Issue 1
February 1998
Page 4-127