Service manual

Removal and Replacement 7-45
Removal
1. Shut down the operating system and power down the system.
2. Expose the system drawer.
3. Expose the power, system card cage, and PCI/EISA sections of the drawer by
removing all covers. Unscrew the Phillips head screws holding each cover in
place and slide the covers off the drawer.
4. Release the power supply tray by removing the two Phillips head screws on the
side of the drawer.
5. Lift the power supply tray to release it from the sheet metal and slide it out from
the drawer until it locks.
6. Tilt the tray to allow easier access to the fans.
7. Remove the bracket holding the power harness as it passes from the power
section to the system card cage section of the drawer. Remove the three Phillips
head screws holding the bracket in place.
8. Disconnect the power harness from the system motherboard and fold the harness
back over the power supplies.
CAUTION: Secure the power harness connectors in the system card cage to
ensure that they cannot damage the pins in the CPU connectors.
9. Disconnect the two power connectors from the PCI/ESIA motherboard. Push the
power cable through the hole from the PCI/EISA section into the power section.
10. Disconnect the fan power cables from the power harness.
11. Remove the four Phillips head screws holding the OCP tray to the drawer.
12. Slide the tray from the drawer far enough to disconnect the power cables
attached to the OCP (cabinet only), the floppy, and the CD-ROM.
13. As you remove the tray from the system, push the power cables through the hole
at the back of the tray into the power section of the drawer.
14. Disconnect the power harness from the power supplies. Remove the harness
from the system.
Replacement
Reverse the steps in the Removal procedure.