Removing And Replacing The System Board Assembly; Removing The System Board Assembly - Dell 2100 User Manual

Removing and Replacing the System
Board Assembly
When installing some hardware options, it may be more
convenient to remove the system board assembly and
place it on a horizontal surface before performing the
upgrade. The system board assembly in your computer
has been designed to be easily removable.
NOTE: Before removing the system board assembly, write
down or print out the system configuration information on
the EISA Configuration Utility screens. If you accidentally
lose your system configuration settings during the following
procedure, you can restore them by referring to the copy of
the settings.

Removing the System Board Assembly

The system board assembly consists of the system board
and a large metal mounting plate secured by four screws
to the right side of the chassis. After the computer cover
is removed, the system board assembly can be removed
from the chassis as a single unit as follows:
1. Remove the computer cover as described in
"Removing the Computer Cover," earlier in this
chapter.
2. If there are no expansion cards installed, go to
step 4. Otherwise, lay the computer on its right
side so you can access the expansion cards.
3. Disconnect the cables from the expansion cards,
and then remove the expansion cards. See
"Removing an Expansion Card" in Chapter 7.
Be sure to label the cables that you disconnect so
they can be easily reconnected.
4. Lay the computer on its left side; then remove the
four screws from the mounting plate (Figure 6-5).
6-82 Dell PowerEdge 2100/180 and 2100/200 Systems User's Guide
mounting screws (4)
system board
cables
Figure 6-5. Removing the System Board
Assembly
5. Partially remove the system board assembly from
the chassis.
Tilt the system board assembly away from the chas-
sis far enough so that you can access the cables and
disconnect them as described in the next step.
6. Disconnect the following cables from the system
board.
See Figure 7-1 to identify the following connectors
on the system board. Disconnect the following
cables (if any) connected to them:
•
PANEL (for the front panel cable)
•
FLOPPY (for the diskette interface cable)
•
HDLED (for the hard-disk drive access indica-
tor cable)
system board/mounting
plate assembly