Nortel DMS-100 Series Maintenance Manual page 376

9-12 Trouble isolation and correction
The SysB means that the CM takes the inactive unit OOS. The SysB also
can means that the CM performed a SWACT on the SMS and made the new
inactive unit OOS.
Action by the CM
The CM sets the inactive unit to SysB. If the defective unit was the active
unit, the CM performs a SWACT and busies the new inactive unit. At this
point, the CM tries to recover the BSY unit without user interruption. The
CM initiates automatic loading and assumes that the correct loads are in
tables PMLOADS and LTCINV. The CM loads the complete load, and
returns the unit to service.
User action
The CM brings the unit back to service and interruption is required if the
SMS does not RTS. Check the load tables and other problem indicators that
can mean the defective unit cannot be returned to service.
PM181—Soft parity fault program store, inactive unit OOS
The following is an example of a PM181 log:
PM181 JUL 23
Node:
Parity audit detected soft parity fault in program store
Other problem indicators include the following:
297-8231-550 Standard 09.01 August 1998
PM189—The inactive unit of the SMS has a fault in program store.
PM189 JUL23 23:29:17 5561 INFO PM SW INFORMATION REPORT
SMS 0 Unit 0: Inact
TASKID: 00370037 PARAUDT, TIME:
COMID: FF NILCID
TEXT: softpgm 00 00 57 F6 00 00
> —SysB reason: a soft parity fault was detected in
>QUERYPM FLT
program store of memory.
23:29:16 5561 INFO SMS 0 Unit 0
ISTb, Unit 0 Act:
PM128—The SMS is set to ISTb, with the inactive unit already OOS.
PM128 JUL23 23:29:16 5561 TBL ISTb SMS 0
Node: ISTb, (Inact OOS) From InSv
Unit 0 Act: ISTb (Parity errors detected) from InSv
Unit 1 Inact: Manb
PM189—The active unit of the SMS has a fault in program store.
PM189 JUL23 23:29:17 5561 INFO PM SW INFORMATION REPORT
SMS 0 Unit 0: Act
TASKID: 00370037 PARAUDT, TIME: 22:29:16.68
COMID: FF NILCID
TEXT: softpgm 00 00 57 F6 00 00
22:29:16.68
InSv, Unit 1, Inact: OOS