Remove the 7311-D11 and 5790 expansion unit service access cover

Removal and replacement procedures for exchanging the expansion unit service access cover

1. Open the front rack door.
2. Place the expansion unit into the service position as described in Place the 7311-D11 and 5790 expansion unit in the service position.
3. Loosen the two captive thumbscrews located on the back of the service access cover.
4. From the back of the expansion unit, lift the cover and slide it backwards until the front disengages. Lift the cover off the expansion unit.
5. To replace the expansion unit service access cover, reverse this removal procedure.