Troubleshooting Chart - Nortel DMS-100 Series Maintenance Manual

Troubleshooting chart

The following table describes basic troubleshooting procedures for the
remote line concentrating module with extended distance capability
(RLCM-EDC) alarms.
RLCM-EDC alarm clearing
Alarm condition
Critical
Possible cause
Defective line concentrating module
(LCM) processor cards in both LCM
units
Defective power converter cards in
both LCM units
All DS30A message ports are
closed.
—continued—
Action
Identify and post the system busy
(SysB) LCM.
Busy both units of the defective
LCM.
Return to service (RTS) the defective
LCM.
If an RTS fails, load the defective
LCM.
Test and RTS the defective LCM.
DMS-100 Family Maintenance Manual ABSK007
9-1