Northern Telecom DMS-100 Series Maintenance Manual page 114

4-80 Disk drive procedures
Procedure 4-39
Disk drive hardware error messages - procedures
297-1001-537 Standard 01.02 December 1993
b.Change the disk mode to PRIME mode.
I. For any other response, see the procedure for that
c.Switch processors.
CAUTION
This action may cause data loss.
d.Check the +12 V dc supply from the Power Supply
i. Replace the Power Supply (the one with the faulty
(continued)
(continued)
i. The recommended procedure is Procedure 4-5.
ii. The alternate procedure is Procedure 4-6. (When
init activity is complete, go to step b.)
Enter: (at the terminal)
>DISK MODE xx (cr)
where: xx = disk mode
Proper response = DISK MODE: AP
message and perform the activities listed.
II. If successful, procedure complete.
III. If unsuccessful, go to step c.
i. See Switch and Status Panel Operation Ch. 7 in
297-1001-536: DPP Card Replacement Guide .
ii. Repeat steps a and b. (If unsuccessful, go to
step d.)
in the same chassis; if incorrect, replace the
Power Supply.
+12 V dc supply).
ii. See Power Supplies in 297-1001-536: DPP Card
Replacement Guide .
= AP = A PRIME
= BP = B PRIME
or
DISK MODE: BP