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2
Installation
This chapter describes procedures for configuring and installing the A990 20-s10t box computer
and system.
Required Tools
Slot and Phillips head screwdrivers are the only tools you will need to install the computer or
system. We strongly recommend the use of a wrist strap and ground cord when handling plug-in
cards.
Configuration Requirements
Verifying the Power Supply Configuration
Warning
G
To avoid damage to equipment or injury to people, any service,
adjustments, or repair to the power supply must be performed
only by qualified maintenance people.
The computer's ac line voltage configuration is determined by the position of the line
configuration power connector. The power connector must be plugged into one of two connectors
(P7 or P8) located at the left side of the power supply when viewing the computer from the front.
See Figure 2-1 for a view of the power supply from the front, and Figure 2-2 for the location of
connectors P7 and P8. For 115 Vac operation, the power connector must be plugged into socket
P8. For 230 Vac operation, the connector must be plugged into socket P7.
To check the position of the ac line configuration/fan power plug connector, remove the computer
front panel and fan panel and inspect the position of the power line connector relative to sockets
P7 and P8. The ac power cord is always connected to plug P9 regardless of how the line
configuration connector is set. For step-by-step information on removing the front panel and fan
panel, refer to Chapter 3 of this manual.
Installation
2-1
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