Nortel North American DMS-100 Instruction Manual page 116

Replacing an 8-in. or a 5.25-in. disk drive unit
Spring clip
Upper slider
21
22
23
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Determine if Allen screws are present.
If Allen screws
are present
are not present
Remove Allen screws with an Allen wrench.
Press the spring clip and pull the DDU free of the frame.
Do
step 22
step 23
1-101
(continued)