Northern Telecom DMS-100 Series Maintenance Manual page 63

Procedure 4-13
Disk condition and disk file error messages - procedures
Change the disk mode to PRIME mode.
Switch processors.
CAUTION
This action may cause a loss of data.
Replace the suspect disk drive.
Call for technical assistance.
DPP Recovery and Routine Maintenance Guide BCS35 and up
(continued)
Enter: (at the terminal)
>DISK MODE xx (cr)
where: xx = disk mode
Proper response = DISK MODE: AP
- i. For any other response, see the procedure for
that message and perform the activities listed.
- ii. If successful, procedure complete. (If
unsuccessful, go to step d.)
i. See Switch and Status Panel Operation,
Figure 7-1.
ii. Repeat steps b and c. (If unsuccessful, go to
step e.)
iii. If successful , change the Disk Xover PCA
associated with A or B, the one that's failing.
i. See Disk Drive Procedures, Replacing Disk
Drive .
ii. Repeat steps b, c, and d. (If unsuccessful, go
to step f.)
End
Disk drive procedures 4-29
= AP = A PRIME
(from disk mode AO)
= BP = B PRIME
(from disk mode BO)
or
DISK MODE: B P