System Board; Figure 4-26. System Board Removal - Dell OptiPlex 100-Mbps Service Manual

4-26 Dell OptiPlex GX pro Systems Service Manual
S
ystem Board
screw
slot (7)

Figure 4-26. System Board Removal

To remove the system board, follow these steps:
1. Disconnect all cables from their connectors at the back of the
system unit.
2. Remove the expansion-card cage.
3. Remove the microprocessor fan.
4. Disconnect all cables from the system board.
Remove the hard-disk drive power cable(s). Slide any drives in the
5.25-inch bays toward the front of the system unit, but leave them cabled.
5. Remove the system board as follows:
a. Remove the screw that secures the system board to the bottom of the
system unit.
b. Slide the system board toward the front of the system unit approxi-
mately one-half inch to release the board from the seven slots in the
floor of the system unit.
c. Lift the system board out of the system unit.
If you are replacing a system board, remove the DIMMs, the microprocessor,
the terminator or add-in card, and the expansion-card cage from the old system
board and install them on the replacement board.