To remove the cover:

1. Loosen the thumbscrew that secures the cover. The thumbscrew is located at the rear of the HMC.
2. Extend the HMC from the rack:
   1. Press the two release latches at the front right and front left of the HMC.
   2. Pull the HMC out until it stops.
3. Open the fan door.
   1. Slide the two latches to the right.
   2. Raise the door panel.
4. Remove the HMC cover:
   1. Slide the cover slightly toward the rear of the HMC until it comes free. Make sure that the cover tabs all slide away from the insets that are on the front, rear, and sides of the HMC.
   2. Lift the cover off the HMC and set the cover aside.