Northern Telecom DMS-100 Series Maintenance Manual page 126

4-92 Disk drive procedures
Procedure 4-44
Disk drive hardware error messages - procedures
Procedure 4-45
Disk drive hardware error messages - procedures
1 (log message)
DISK: BUS DATA TRANSFER
BYPASSED AUXILIARY
STATUS: xx, INTERRUPT
STATUS: yy STAGE:
DRIVE: bb
COMMAND: cc dd(1) dd(2)
... dd(n) DISK JOB:
PARAMETERS: ff gg hh(1)
hh(2) hh(3) kk(1) kk(2)
SIDE z
(w/o 56K polling)
297-1001-537 Standard 01.02 December 1993
e. Replace the suspect disk drive.
f.
where: Auxiliary Status = xx = contents of the bus
aa
DISK
ee,
= ID = Idle
= DT = Data
= R2 = Request2 = ST = Status = MG = Message
= DC = Disconnect
(continued)
(continued)
i) See Printed Circuit Assembly Replacement in
297-1001-536: DPP Card Replacement Guide .
ii) If the problem is not cleared after PCA
replacement and restart, go to step e. Return
the original PCA to its position before
proceeding.
i) See Disk Drive Procedures, Replacing Disk
Drive, Procedure 4-8.
ii) Repeat steps a, b, and c. (If unsuccessful, go to
step f.)
Call for technical assistance.
End
controller Auxiliary Status Register, (in Hex).
Interrupt Status = yy = contents of the bus
Interrupt Status Register, (in Hex).
Stage = aa = a two letter code indicating the state
of the SCSI (Small Computer System
Interface) bus cycle that the system Disk
Interface was in when the error occurred.
= SL = Select = CM = Command
= D2 = Data2 = RQ = Request