Data General AViiON 4600 Series, Customer Documentation

Page: 172 / 266

Replacing the System Board
10-2
014–002091
3. Remove any expansion I/O and graphics boards as described in Chapter 9,
Adding or Replacing a CPU Complex and System Board Options."
4. Using the small Phillips screwdriver, remove the five screws, shown in
Figure 10Ć2, that secure the system board bracket to the back of the computer
unit.
Remove seven screws.
Computer unit (back)
Remove filler plate
Remove seven screws.
Figure 10-2 Releasing the System Board Bracket from the Back of the Computer Unit
5. Remove the two screws and filler plate, also shown in Figure 10Ć2, from the
computer unit bulkhead.
6. Unplug the speaker, COM port, and SCSI bus cables from the system board as
shown in Figure 10Ć3.