Trouble locating and clearing procedures (continued) 1-99
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Replacing an 8-in. or a 5.25-in. disk drive unit
(continued)
At the front of the DDU shelf
14
Set the power switch on the power converter to the OFF position.
15
Ensure that the converter fail LED on the power converter card lights. The lit
fail LED of the power converter card indicates that the power is OFF.
16
Remove the four mounting screws to remove the panel in front of the DDU.
17
The next action depends on the mounting configuration for the DDU.
At the back of the DDU shelf
18
Disconnect the power cable from the back of the DDU.
WARNING
Static electricity damage
To handle the DDU, wear a wrist-strap that connects to a
grounding point. Grounding points are on the frame
supervisory panel (FSP) or a modular supervisory panel
(MSP). The wrist-strap protects against static electricity
damage.
If the DDU
Do
mounts vertically on tracks
step 18
mounts horizontally on a 14-in.
DDU drawer frame
step 38