Digital Equipment VAX 4000 Model 100 Upgrade Instructions page 6

Remove the Upper Drive Shelf
1. Disconnect the power cable from the
power supply unit. Remove the power
cable from the enclosure.
2. Refer to the figure, and loosen the three
captive screws that hold the drive shelf in
place.
Captive Screws
3. Lift the left side of the shelf and pull the
shelf to the left until the tabs on the right
clear the cutouts in the lower drive shelf.
4. Set the drive shelf aside.
MLO-010739