WARNING:
The H7231-N battery backup unit is heavy. Exercise caution
when lifting or moving this unit.
1. At the front of the cabinet, use a 3/8 inch nutdriver to remove the two
nuts that secure the battery backup unit in its mounting bracket.
2. Slide the BBU toward you so you can access the cables at the back. Be
careful not to slide it too far forward.
3. At the rear of the cabinet, use a flat screwdriver to remove the two
screws that attach the BBU control/status cable (17-00962-01) to J18.
See
3
in Figure 2–17.
4. Disconnect the BBU power cable (70-20396-2F) from J9. See
4
. Using
a 3/8 inch nutdriver, disconnect the ground strap and discard.
5. Disconnect the BBU AC line cable (17-00365-03) from J5 on the H405
power controller and J22 and remove. See
5
.
6. Lift the BBU out of the mounting bracket. Remove mounting unit from
system.
To install the new battery backup unit, follow the procedures described in
VAX 6000: Installing the H7236-A Battery Backup Option
.
XMI-1 to XMI-2 Conversion
2–29