Data General AViiON 4600 Series, Customer Documentation

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Adding or Replacing Internal Mass–Storage Devices
7-14
014–002091
After you have closed the computer unit, you should power up any peripheral housing
units and other peripherals, and then the computer, according to the instructions in
the Powering Up" section of Chapter 3. Then test your computer system by running
the AViiON System Diagnostics as described in the
Using AViiON

System
Diagnostics manual.
Adding or Replacing the SCSI Adapter Board
The diskette drives supported in AViiON 530 and 4600 series systems require a
printed-circuit board that adapts the SA450-interface diskette drive to the system's
SCSI bus. One of these
SCSI adapter boards can support two diskette drives.
If you are adding the SCSI adapter board, go to the section, Installing the SCSI
Adapter Board." If you are replacing the SCSI adapter board, continue to the next
section, Removing the SCSI Adapter Board."
Removing the SCSI Adapter Board
Before you can remove the SCSI adapter board, you should remove the computer unit's
top and side covers and attach the ESD wrist strap as described in Chapter 6,
Expanding and Maintaining Your Computer System."
CAUTION: Unless you are properly grounded, you can discharge static electricity and
damage components in the system.
To remove the SCSI adapter board from the computer unit, use the following steps.
1.
Unplug the SCSI bus and I/O bus cables from the SCSI adapter board as shown
in Figure 7Ć14.
I/O bus cable
Typical diskette drives
SCSI adapter board
Computer unit
(top and left side covers removed)
From
system
board
To other
SCSI bus
drives
SCSI bus cable
Figure 7-14 Unplugging the SCSI Bus and I/O Bus Cables from the SCSI Adapter Board