The model 285 or 9131-52A has two doors. The top door
allows access to the media and the bottom allows access to the DASD. Use the
following procedure for removing both doors.
Open the door that you want to remove and release the tab at the
center hinge point as shown in the following figure.
Lift up the bottom tab at hinge A to
release the top door.
Press down on the top tab at the hinge A to
release the bottom door
Gently swivel the top back edge of the door forward until it releases
from the system unit.