Northern Telecom DMS-100 Series Maintenance Manual page 77

Procedure 4-19
Disk condition and disk file error messages - procedures
i. If the message does not repeat, procedure
complete.
ii. Report this incident to NT as soon as
possible.
iii. If the problem appears on both processors,
and did not go away when the power is cycled,
go to step f.
Check if the DPP system software version is correct.
Enter:
>VS ( ACT) (cr)
i. If the proper response is not obtained, load
the correct software to the DPP system.
- Contact technical assistance to perform this
activity.
ii. Repeat the DISK VS and VS ACT commands
to verify that the versions are compatible.
- If the versions are correct, procedure
complete.
- If the versions are not correct, go to step g.
Replace the Disk Interface PCA in slot 11 of the
standby chassis.
Verify with Tech. Assistance which EPROMs to use.
Change the EPROM chips on the Disk Interface
PCA in A11 and B11.
i. See Replacing EPROM Integrated Circuits
(Where Necessary), EPROM Precautions, and
EPROM Installation Procedure, in
297-1001-536: DPP Card Replacement
Guide .
DPP Recovery and Routine Maintenance Guide BCS35 and up
Disk drive procedures 4-43
(continued)
(at the terminal)
Proper response =
D01D6I-00:3/10/89
this is the active disk ( firmware
version for any BCS using 380
Mbyte disks w/o 56K polling; verify
that there have been no version
updates since the original DPP
installation. If there have been,
substitute the new version number
in the proper response.
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