Note:

The removable fan pulls air from in front of the chassis so that it flows across the boards and out the back. The fan must be oriented for the correct airflow direction. In general, the fan label is on the side from which air exits the fan. Confirm correct orientation by checking the embossed arrows on the side of the fan:

Arrow points horizontally toward back of chassis Arrow points vertically up Note the direction of the arrows on the existing fan before you remove it. Replace a failed fan with the same type as the one removed.

Note:

If you install a PCI VGA video card, you must install it in one of the primary PCI slots.

Installing an Individual System Fan

The subchassis houses up to eight system fans. Not all of these fans are required in standard configurations. If you use high power hard drives, you must install additional fans. Follow this procedure to install additional fans.

To Install an Individual System Fan

1.See “Removing an Individual System Fan” on page 59, as necessary.

2.Observe the safety and ESD precautions at the beginning this chapter.

3.Slide the fan into its correct receptacle in the foam fan assembly.

4.Attach the cable to the foam at the correct places (if you are replacing a bad fan, you should have recorded where each cable attaches to the foam; if you are adding a fan, see Figure 25 on page 61).

5.Position the fan assembly inside the chassis so that the individual fan cables can easily reach their connectors on the front panel board.

6.Attach the cable to the front panel at the correct connector.

7.Position the fan assembly as it was inside the chassis prior to removal, so that it rests firmly against the diskette drive at the top and the 5.25- inch bays at the middle and bottom.

8.Reinstall the foam cover. It is molded to match the position of the fans and fits in only one way.

9.Reinstall the access cover using the original screws.

Expansion Cards

The system board has seven slots for the installation of expansion cards. There are six PCI slots and one shared slot that can support either a PCI card or an ISA card.

62 Maintaining and Troubleshooting the Gateway ALR 9200 Server