IBM 8317 - Manual (Page 40)

4. Unscrew the fansink from the system board and carefully lift it off. The
processor will come with it, attached to the bottom by thermal grease.
5. To remove the fansink from the processor, remove the assembly from the
system board, and twist the processor to break the seal formed by the thermal
grease and remove.
System board
To remove the system board, do the following:
1. Turn off the computer and peripheral devices and disconnect all external cables
and power cords; then, remove the cover. See “Removing the cover” on
page 19.
2. Remove the retention bar and riser card. See “Removing the retention bar and
PCI riser card” on page 33.
3. Remove the drive tray. See “Installing a drive in the disk drive tray” on
page 26.
4. Disconnect all wires connected to the system board.
5. Remove the fansink and processor. See “Replacing a microprocessor” on
page 33.
6. Remove the 4 screws that attach the system board to the chassis.
7. Lift out the system board.
Power supply
To remove the power supply, do the following:
1. Turn off the computer and peripheral devices and disconnect all external cables
and power cords; then, remove the cover. See “Removing the cover” on
page 19.
34 Hardware Maintenance Manual