Northern Telecom DMS-100 Series Maintenance Manual page 94

4-60 Disk drive procedures
Procedure 4-27
Disk condition and disk file error messages - procedures
4 Other Alarm Indications
5 System Recovery Action
6 Craftsperson Activity
297-1001-537 Standard 01.02 December 1993
Default:
Status Panel: Minor
Customer-Selected
Status Panel:
None
a.Switch processors.
CAUTION
This action may cause data loss.
b.Reset the CPU that is online.
c.Request the current disk operating mode.
(continued)
(continued)
i. Press the RESET button on the CPU PCA.
ii. After all CPU reset activity stops, if no disk has
on-line status, go to step b.
i. Wait for processor switch activity to stop; then go
to step c.
i. Enter: (at the terminal)
>DISK MODE (cr)
Proper response =
DISK MODE: AO
DISK MODE: BO
DISK MODE: AP
DISK MODE: BP
For any other response, see the procedure for that
message and perform the activities listed.
ii. If disk mode is AP or BP, procedure complete.
iii. If disk mode is AO or BO, go to step d.
Audible: Minor
Audible: