Users Guide

support.dell.com Repair and Replacement 6-7
10. Remove the new system board from its antistatic bag and place the old system
board into the bag.
Figure 6-6. Removing the System Board
Installing a System Board
1. Lay the serial port cable to the outside of the unit over the power supply.
2. Tilt the front end of the system board about 45 degrees and slide it into the front
panel. Then lower the back end of the system board so that the metal guides on
the chassis fit into the slots on the system board.
3. Slide the system board forward up against the front panel until the screw holes
line up.
4. Install the four Phillips screws into the system board.
The #4 Phillips-head screw goes into the center back hole on the system board
and the #2 Phillips-head screws go into the three holes at the front of the system
board.
5. Reconnect the serial port ribbon cable to the system board. The cable is keyed
with the red strip going to pin 1 on the connector. Gently lay the excess ribbon
cable between the system board and chassis to prevent cable damage.
6. Reconnect the power supply connector(s).
7. Reconnect the fan tray assembly connector.
8. Replace the switch’s cover.