System Board; Power Supply - IBM 6826 Hardware Maintenance Manual

4. Unscrew the fansink from the system board and carefully lift it off. The
5. To remove the fansink from the processor, remove the assembly from the

System board

To remove the system board, do the following:
1. Turn off the computer and peripheral devices and disconnect all external cables
2. Remove the retention bar and riser card. See "Removing the retention bar and
3. Remove the drive tray. See "Installing a drive in the disk drive tray" on
4. Disconnect all wires connected to the system board.
5. Remove the fansink and processor. See "Replacing a microprocessor" on
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
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Hardware Maintenance Manual
processor will come with it, attached to the bottom by thermal grease.
system board, and twist the processor to break the seal formed by the thermal
grease and remove.
and power cords; then, remove the cover. See "Removing the cover" on
page 19.
PCI riser card" on page 33.
page 26.
page 33.
and power cords; then, remove the cover. See "Removing the cover" on
page 19.