Service manual

Servicing the Mainframe 51Chapter 3

Replacing the Fan

Assembly

This section gives guidelines to replace the Fan Assembly in the E8408A

mainframe (see Figure 3-5). See Table 3-1 for a replacement part number.

1 Turn off the mainframe and remove the AC power cord.

Note Be sure to observe static-free procedures when removing/installing the

Fan Assembly.

2 Remove mainframe accessory items as required. See "Removing

Mainframe Accessory Items".

3 Remove the Power Supply Assembly. See "Replacing the Power

Supply Assembly".

4 Remove the Fan Assembly by following the steps in Figure 3-5.

5 Install the replacement fan assembly by reversing the steps in Figure

3-5.

6 Reinstall the Power Supply Assembly by reversing the steps in

"Replacing the Power Supply Assembly".

7 Reinstall mainframe accesssory items removed in step 2. Reconnect

AC power cord.

Figure 3-5. Removing the Fan Assembly

Remove Fan Wires

from P3 Connector

Connector

and Lift Fan Out of

Remove Four Screws

Mainframe

Backplane