Dell 1900 owner manual Fans

3Connect the power cables to the following components where applicable (see Figure 6-2 for connector locations):

•PWR1 connector on the system board

•PWR2 connector on the system board

•PWR CTRL connector on the system board

•Hard drives

•Diskette drive

•Optical drive

•Tape backup unit

•Cable retention clips on the chassis (see Figure 3-4)

4Replace the center fan bracket. See "Replacing the Center Fan Bracket" on page 79.

5Replace the expansion-bay and processor fans (FAN1, FAN2, and FAN3). See "Removing and Installing a Fan" on page 53.

6Close the system. See "Closing the System" on page 48.

7Connect the power cable to the power supply and the power outlet.

Fans

The system contains six hot-plug cooling fans:

•One expansion-bay cooling fan (FAN1)

•Two processor cooling fans, one for each processor (FAN2 and FAN3)

•Three memory module cooling fans:

–One fan on top of the memory cooling shroud (FAN4)

–Two fans at the rear of the system (FAN5 and FAN6)

NOTICE: In the event of a problem with a particular fan, the fan’s number is referenced by the systems management software, allowing you to easily identify and replace the proper fan.

52

Installing System Components