1. Squeeze tabs on the side of the hard drive. Carefully pull it out of the drive sled.
2. Disconnect the SCSI cable and power cable from the hard drive.
3. Hard drive removed.
4. Remove all motherboard cards (RAM can be left in slots).
5. All cards removed.
6. Unscrew a single screw holding down the drive sled.
7. Carefully pull out the power supply. You will need to slightly pull forward on the drive sled and pull back a plastic tab that attaches the drive sled to the power supply. DON'T FORCE IT.
8. Power supply removed.
9. The power supply actually plugs into the motherboard.
10. Unplug the SCSI cable from the motherboard.
11. Unplug the hard drive power cable from the motherboard.
12. Unplug the floppy drive cable from the motherboard.
13. Carefully remove the drive sled. DON'T FORCE IT.
14. Drive sled removed.
15. Remove the programmer/reset switch extension.
16. Programmer/reset switch extension removed.
17. Unplug the speaker from the motherboard.
18. Push down on the speaker mount tab and remove the speaker.
19. Speaker removed.
20. The motherboard is ready to remove.
21. Push forward the motherboard to clear the ports.
22. Carefully pull out the motherboard.
23. All components removed.
24. Interesting to note, the Product Design Team's signatures are molded into the bottom of the case.
25. Carefully clean off the motherboard and other internal components.