Northern Telecom DMS-100 Series Maintenance Manual page 153

Procedure 4-54
Disk drive hardware error messages - procedures
1
DISK: RST-7
(w/o 56K polling)
2 Alarm Level:
No disk mode change
3 Customer-Selected
Alarm Level
4 Other Alarm Indications
5 System Recovery Action
6 Craftsperson Activity
cause: Disk Interface CPU executes an illegal
Reason Code = 27
Corresponds to ERRMAP entry: DISK ER MESSAGE
System Default:
Default:
Status Panel: Minor
Customer-Selected
Status Panel:
Disk system restarts task.
Replace the Disk Interface PCA in slot 11 of the chassis
identified in the log message.
CAUTION
Since all circuit assemblies in the DPP are static sensitive, be
careful handling them.
a. See Printed Circuit Assembly Replacement in
b. Call for technical assistance.
DPP Recovery and Routine Maintenance Guide BCS35 and up
instruction.
Type: Minor
Type:
297-1001-536: DPP Card Replacement Guide .
i) If the problem is not cleared after PCA
replacement and restart, go to step b. Return
the original PCA to its position before
proceeding.
End
Disk drive procedures 4-119
Level: 0
Level:
Audible: Minor
Audible: