Northern Telecom DMS-100 Series Maintenance Manual page 134

4-100 Disk drive procedures
Procedure 4-46
Disk drive hardware error messages - procedures
Notes:
Note 1: (TIME OUT) is only included when an SCSI bus time out is declared by the Disk Interface. The AUXILIARY
STATUS and the INTERRUPT STATUS fields contain FF(Hex) error message. (00 is the typical response for this type of
message.)
297-1001-537 Standard 01.02 December 1993
(continued)
Enter: (at the terminal)
>DISK MODE xx (cr)
where: xx = disk mode
Proper response
i) For any other response, refer to the procedure
for that message and perform the activities
listed.
ii) If successful, procedure complete. (If
unsuccessful, go to step c.)
c. Switch processors.
i) See Switch and Status Panel Operation.
ii) Repeat steps a and b. (If successful, go 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 .
e. Replace the suspect disk drive.
i) See Disk Drive Procedures, Replacing Disk
Drive, Procedure 4-8.
ii) Repeat steps a and b. (If unsuccessful, go to
step f.)
f. Call for technical assistance.
End
= AP = A PRIME
= BP = B PRIME
= DISK MODE: AP
or
DISK MODE: BP