Nortel North American DMS-100 Instruction Manual page 111

1-96 Trouble locating and clearing procedures (continued)
Replacing an 8-in. or a 5.25-in. disk drive unit
Replacing an 8-in. or a 5.25-in. disk drive unit
At the MAP terminal
1
2
IOD
IOC
STAT
3
IOC CARD
2 PORT
4
297-8021-544 Standard 14.02 May 2001
CAUTION
Loss of service
Disk allocation is difficult and dangerous errors are a
possibility. Contact the next level of support before you
perform this procedure.
Obtain the following items:
• replacement DDU
• flat-bladed screwdriver with 1/4-in. (3-mm) blade
• 5/16-in. (7-mm) Allen wrench
Obtain a strong shipping carton for the DDU you will replace. If possible, use
the carton of the new DDU.
To access the IOD level of the MAP display, type
>MAPCI;MTC;IOD
and press Enter.
Example of a MAP display:
0 1
L .
To post the IOC for the replaced DDU, type
>IOC ioc_no
and press Enter.
where
ioc_no
is the number of the input/output controller (IOC) that holds the
controller card for the DDU (0 to 9)
Example of a MAP display:
0 1 2
0123 0123 0123 0123 0123 0123 0123 0123 0123
STAT .... .... –––– .––– –––– P––– –––– .––– .–––
TYPE CONS CONS
To post the controller card for the DDU, type
>CARD card_no
and press Enter.
(continued)
3 4 5 6
MPC MPC MPC
7 8
DDU