Working Inside Your Computer 6-7
•
AUXFAN (for the cable to an auxiliary fan)
•
POWER (for the power supply cable)
•
POWER3V (for the 3-volt power supply cable)
7. To work on the system board, place the system
board assembly on a flat surface, with the system
board facing up.
Replacing the System Board Assembly
To replace the system board assembly in the chassis, per-
form the following steps:
1. Reconnect the cables to the system board.
Position the system board assembly near the chassis,
and reconnect all cables you disconnected in step 6 of
the preceding procedure. Double-check the cable con-
nections before continuing.
2. Install the system board assembly in the chassis.
Facing the right side of the computer, hold the sys-
tem board/mounting plate assembly in position.
Align the input/output (I/O) connectors on the back
of the system board with the openings in the back of
the chassis, insert the system-board mounting plate
under the two tabs on the chassis (Figure 6-6), and
then slide the system board assembly toward the
back of the computer until the mounting screw holes
align with the holes in the chassis.
Figure 6-6. Replacing the System Board
Assembly
3. Replace and tighten the four mounting-plate
screws.
4. Replace the computer cover as described in
“Replacing the Computer Cover” found earlier in
this chapter.
system-board
mounting plate
tabs (2)