Northern Telecom DMS-100 Series Maintenance Manual page 150

4-116 Disk drive procedures
Procedure 4-51
Disk drive hardware error messages - procedures
297-1001-537 Standard 01.02 December 1993
(continued)
b. Change the disk mode to PRIME mode.
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 c.)
c. Verify that the power input and other cabling on
that chassis are correct.
i) If cabling is correct, go to step d.
ii) If incorrect, make any necessary corrections.
- Before moving the locations of any cables
and/or connector arrangements, verify the
locations of the cables in the Site
Configuration Specifications for the particular
Office.
- Consult with technical assistance personnel
before making any cabling changes.
iii) After making any necessary corrections, repeat
steps a and b. If still unsuccessful, switch
processors. Repeat steps A and B. If
successful, to to step D. If unsuccessful, go to
step E.
d. Replace the Disk (SCSI Intf) Interface PCA in slot
11 of the standby chassis
i) See Printed Circuit Assembly Replacement in
297-1001-536: DPP Card Replacement Guide .
(continued)
= AP = A PRIME
= BP = B PRIME
or
DISK MODE: BP