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Removing the front cover from a 7311-D20 expansion unit
Use this procedure to remove the cover to access components or perform service.
To remove the expansion unit front cover, follow these steps:
1. If necessary, open the front rack door.
2. Remove the thumbs screws that are securing the covers to the rack.
3. Push both cover-release latches in the direction of the arrows to release the cover as shown in the
following figure.
Figure 133. Removing the front cover
4. Pivot the cover from the bottom and swing the top of the cover out.
5. Pull the bottom of the cover up and then away from the expansion unit. This releases the two tabs
located on the bottom of the cover.
6. Put the cover in a safe place.
Installing the front cover on a 7311-D20 expansion unit
Use this procedure to install the cover after accessing components or performing service.
To install the expansion unit front cover, follow these steps:
1. If necessary, open the front rack door.
2. Insert the two tabs located on the bottom edge of the cover into their locking slots, located on the
expansion unit frame.
3. Pivot the front cover up toward the top of the expansion unit frame.
Chapter 12. Removing and replacing the expansion unit cover or door
141
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