Technical data

VAX/VAXserver 4000-300, -400, and -500 Conversion
5.6 Removing and Replacing the BA440 Backplane
5.6 Removing and Replacing the BA440 Backplane
This section describes how to remove the BA440 backplane (P/N 54-19354-01).
The backplane is the only part of the BA440 enclosure that must be removed
from the rear of the enclosure.
It is not necessary to totally remove all option units, subassemblies, and
connector cables from the enclosure, as long as each has been removed from
the backplane. Leave cables connected to the ISE front panels to keep the
appropriate ID plug with the correct ISE. This helps keep the replacement
time to a minimum.
To remove the backplane, follow the steps in this section:
5.6.1 Open the Front Door of the Enclosure
To open the front door of the enclosure:
1. Unlock and open both doors. Turn off the power to the power supply. Turn
the power off on any expander boxes attached to the system enclosure.
2. Remove the power cable from the power supply.
3. Remove the upper door by swinging it out more than 90 degrees and lifting
it off its bracket hinge pins as shown in Figure 5–4.
4. Remove the lower door by swinging it out more than 90 degrees and lifting
it off its bracket hinge pins.
5. Remove the door-latching bracket on the right by removing the three
self-tapping screws and one 6-32 screw. Remove the bracket and the two
remaining self-tapping screws that secure the right side plastic panel to
the sheet metal chassis frame.
6. Remove the hinge bracket on the left by removing the five self-tapping
screws.
7. Slide the outer shell back and lift it off the enclosure.
5–8 VAX/VAXserver 4000-300, -400, and -500 Conversion