NetApp ASA C Series Install page 253

== Step 1: Remove the controller module
You must remove the controller module from the chassis when you replace the controller module or
replace a component inside the controller module.
1. On the front of the chassis, use your thumbs to firmly push each drive in until you feel a positive stop.
This ensures that the drives are firmly seated against the chassis midplane.
2. Go to the rear of the chassis. If you are not already grounded, properly ground yourself.
3. Unplug the controller module power supplies from the source.
4. Release the power cable retainers, and then unplug the cables from the power supplies.
5. Loosen the hook and loop strap binding the cables to the cable management device, and then unplug
the system cables and SFP and QSFP modules (if needed) from the controller module, keeping track
of where the cables were connected.
Leave the cables in the cable management device so that when you reinstall the cable management
device, the cables are organized.
6. Remove the cable management device from the controller module and set it aside.
7. Press down on both of the locking latches, and then rotate both latches downward at the same time.
The controller module moves slightly out of the chassis.
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