Replacing fan subassemblies

About replacing fan subassemblies

Replacing a fan subassembly consists of the following procedures:

Identifying the subassembly to replace

Each of the three fan subassemblies secured to the front of the storage engine chassis contains two fans. If a problem occurs in a fan, the system console displays an error message identifying the specific fan that has the problem, rather than the subassembly it belongs to.

Note
You cannot replace the individual fan; you must replace the subassembly.

The following table lists the individual fan numbers that the console might display and their corresponding subassemblies.

Fan number (as indicated on your console)	Subassembly (as indicated on your chassis)
Baseboard fan 1	Subassembly 1
Baseboard fan 2	Subassembly 1
Baseboard fan 3	Subassembly 2
Baseboard fan 4	Subassembly 2
Baseboard fan 5	Subassembly 3
Baseboard fan 6	Subassembly 3

Note
To maintain UL, CSA, and TUV safety certifications, you must obtain replacement fan subassemblies from Network Appliance. Using unapproved replacement fan subassemblies voids the safety certifications.

Removing a fan subassembly

To remove a fan subassembly, complete the following steps.

Note
Because the three subassemblies are hot swappable, there is no need to shut down the storage engine. There is a two-minute window for replacing fans.

Step	Action
1	From the console, note the identification of the fan that failed and identify the subassembly that it belongs to.
2	Pull the bezel straight off the front panel of your appliance by using the grooves on the left and right edges of the bezel.
3	Using a #1 Phillips screwdriver, loosen the thumbscrews on the chassis fan subassembly that failed.
4	Using both the upper and lower lips, pull the subassembly out of the storage engine chassis. The sheet metal below the subassemblies is silk-screened with the labels Fan 1, Fan 2, and Fan 3. Note If your appliance is running Data ONTAP^TM software, it reports a failure for the removed fan subassembly.
5	Set the subassembly aside.

Installing a fan subassembly

To install a fan subassembly, complete the following steps.

Step	Action
1	Slide the subassembly straight into the storage engine chassis.
2	Tighten the subassembly thumbscrews.
3	Align the pins on the bezel with the holes on the front panel of the storage engine, then push the bezel straight onto the front panel.
4	Reconnect and turn on the power to the storage engine.
5	Interrupt the boot process by pressing the Delete key during the memory test.
6	Run diagnostics by entering the following command at the `ok>` prompt: sys-diag See the Diagnostics Guide for more information.
7	Run the diagnostics that apply to the unit you installed or replaced.