Expansion Board Removal - Compaq Deskpro EN Series Maintenance & Service Manual

5.12.2

Expansion Board Removal

1. Prepare the computer for disassembly (Section 5.4).
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the
system board. You must disconnect the power cord from the power source before opening the computer
to prevent system board or component damage.
2. Remove the system unit cover (Section 5.6).
3. Disconnect and raise the riser board 1 (Section 5.12.1).
4. Grasp the system board tray and pull the assembly out of the rear of the chassis about 4 inches
to access the expansion board retainer screws 2.
CAUTION: When removing and replacing the system board, do not allow the baffle mounted on top of the
processor (on select models) to drag against the expansion boards.
5. Disconnect any interconnect cables attached to the expansion board before removing the board.
6. Remove the screw that secures the expansion board to the board cage, then remove the
expansion board 3.
Removing the Expansion Board
To replace the expansion board, reverse the removal procedure.
If you are installing an expansion board for the first time, remove the desired
expansion board slot cover before installing the board.
When installing a SCSI controller with an internal SCSI device, route the data
cable across the top of the expansion board cage. The SCSI board should be
mounted in the top slot if possible for cable routing purposes.
When installing a NIC expansion board, ensure that the Remote Wakeup cable is
properly installed. Failure to do so may cause computer startup or network
problems.
The computer should automatically recognize the added plug and play expansion board.
5-20 Desktop Removal and Replacement