Disk: Backup Failed - Northern Telecom DMS-100 Series Maintenance Manual

4-44 Disk drive procedures
Notes:
Note: It may be necessary to reformat the disk if the disk program is changed.
Procedure 4-20
Disk condition and disk file error messages - procedures
1

DISK: BACKUP FAILED

297-1001-537 Standard 01.02 December 1993
ii. Repeat the DISK VS and VS command inputs
to verify that the versions are now compatible.
- If the versions are correct, procedure
complete.
- If the versions are not correct, go to step h.
See Printed Circuit Assembly Replacement in
297-1001-536: DPP Card Replacement Guide .
If unsuccessful after PCA replacement and
restart, go to step i. Return the original PCA to
its position before proceeding.
Replace the disk drive in the active processor chassis.
i. See Disk Drive Procedures, Replacing Disk
Drive .
ii. Repeat the DISK VS and VS ACT command
inputs to verify that the versions are now
compatible.
- If the versions are correct, procedure
complete.
- If the versions are not correct, go to step j.
Call for technical assistance.
End
cause: printed upon termination due to a failure of the
disk backup operation. Backup operation
attempted as a result of an ONLY to PRIME disk
mode change request. Printed for the following
reasons:
disk not properly initialized
faulty Disk Interface PCA
faulty disk drive
faulty +12 V dc supply from the power supply.
(continued)