14. Replace the air baffle for the microprocessors. Slant the front of the air baffle
for the microprocessors downward at an angle while moving it forward; then,
rotate the rear of the air baffle down until it snaps into place (it will become
stationary).
15. Rotate the drive cage back into the computer and reconnect the fan connector
on the fan assembly on the drive cage to the system board.
16. If you have other options to install or remove, do so now. Otherwise, replace
the side cover (see “Replacing the side cover” on page 51.
17. Reconnect the external cables and power cords. Turn on the attached devices,
and turn on the computer.
Installing an external SCSI cable
Toinstall an external SCSI connector on the rear of the computer, install an external
SCSI interface option. For a list of supported external SCSI interface options for
your computer, go to http://www.ibm.com/pc/.
The external SCSI interface option contains a SCSI cable with a connector at one
end and on the other end another connector or an expansion-slot cover with an
embedded connector. Complete the following steps to install and route the SCSI
cable in the computer:
1. Turn off the computer and all peripheral devices. Disconnect all power cords;
then, disconnect all external signal cables from the computer.
2. Remove the side cover (see “Removing the side cover” on page 25).
3. Open the front adapter-retention bracket and remove the rear adapter-retention
bracket from the PCI-X slots (see “Installing an adapter” on page 26 for
instructions). Youmight also have to remove longer adapters for access to the
SCSI connectors on the system board.
4. Connect the SCSI signal cable to the connector for SCSI channel Aon the
system board. See “System board internal connectors” on page 72 for the
location of the SCSI channel Aconnector.
5. Route the SCSI cable between the chassis and PCI-X slot 5 to the back of the
computer. Make sure that the cable does not block the flow of air to the
microprocessors or hard disk drives.
6. Attach the external connector to the rear of the computer.
vIf the external end of the SCSI cable has a standard SCSI connector,
complete the following steps:
a. Remove the SCSI-connector knockout from the rear of the computer.
b. Insert the external SCSI connector on the SCSI cable into the knockout
opening and secure it with the attached screws.
vIf the external end of the SCSI cable has an expansion-slot cover with an
embedded connector, complete the following steps:
a. Remove an expansion-slot cover from an available PCI-X slot.
b. Insert the expansion-slot cover with embedded connector into the slot
opening.
48 IntelliStation Z Pro Types6223 and 6227: HardwareMaintenance Manual and Troubleshooting Guide