Data General AViiON 4600 Series, Customer Documentation

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Expanding and Maintaining Your Computer System
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014–002091
3. Use a nonmagnetic pointed device to carefully push the proper switch(es) to the
in or out position, as required. Figure 6Ć4 shows a typical row of DIP switches.
1 2 3 4 5 6 7 8 9 10
= Switch down (in)
= Switch up (out)
DIP
switches
printed-circuit board
Figure 6-4 DIP Switches on Printed-Circuit Boards
Opening the Computer Unit
To removeor install a deviceinsidethecomputer, you must removethetop and or side
cover(s) from thehousing. Makesureyou haveread and understand theAvoiding
Electrostatic Discharge (ESD) Damage" section of this chapter before you open the
computer unit. You will need a coin or large flat-blade screwdriver to open the
computer unit.
Thefollowing steps tell you how to removethesideand top covers from thecomputer
unit's housing.
Removing the Side Covers
1. Power down the computer system. Refer to the Shutting Down Your Computer
System" section of Chapter 3 for the proper procedure to power down the
computer system.
WARNING: To avoid electrical shock or equipment damage, always
power down the computer unit and unplug the power cord
from the ac power outlet and from the receptacle on the
back of the computer unit before removing the covers from
the computer unit.
2. Reposition the computer system, if necessary, so you can gain access to the left
or right side. As you reposition the computer system, be careful not to strain the
cables or jar the computer system.
3. Using a coin or screwdriver, loosen each fastener by turning it one-quarter turn
counterclockwiseas shown in Figure6Ć5.