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Installation Procedure
Battery Backup Installation
The A990 Computer or System accommodates an optional battery backup, which you can install
in the power supply compartment. To install the battery backup:
1.
Make sure that the ac power cord is not connected to the computer chassis and that the ac
LINE switch is set to the OFF position. If you have not already done so, set the Battery
Enable switch on the back of the chassis to DISABLE.
2.
Remove the front panel, the fan panel, and the ac line configuration/fan power connector
from the chassis. Note whether the connector is attached to P7 (230 Vac) or to P8 (115 Vac).
Refer to Chapter 3 of this manual for instructions on removing these assemblies.
3.
If
the strapping connector is connected to the terminal on the lower board of the power
supply marked "B.B. OFF", connect it to the terminal on the upper board marked "B.B.
ON". See Figure 2-1.
4.
Place the battery bracket over the battery. Align the negative (-) terminal of the battery with
the label on the battery bracket that reads "Black Wire (-)". See Figures 2-8 and 2-9.
5.
On the right side of the chassis, locate a pair of wires (a white covered wire and a black
covered wire) in a gray sheath. Connect the terminal lug on the white wire to the positive
( + ) battery terminal and connect the terminal lug on the black wire to the negative (-)
battery terminal. See Figure 2-9.
6.
Place the battery, bracket, and attached wires in an upright position in the battery tray
beneath the power supply. Place the assembly so the battery terminals are facing outward,
not upward. See Figure 2-10. The fit is close, so you may have to maneuver the battery and
bracket assembly under the power supply as you set it into place. Rotate the battery and
bracket assembly so the battery terminals face upward. See Figure 2-11. Fasten the captive
screws on the battery bracket.
7.
Reinstall the fan panel and front panel. Remember to reconnect the line configuration
connector to P7 or P8, as appropriate for your line power voltage. Refer to Chapter 3 for
complete instructions.
2-10
Installation
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