Dell 3130cn Color Laser Printer - Manual (Page 234)

Removing a Hard Disk
1. Ensure that the printer is turned off.
2. Turn the screw on the control board cover in a counter-clockwise direction and open the cover.
3. Remove the two screws from the hard disk on the side of the control board.
4. Hold the lower edge of the hard disk and disconnect the connector to remove it from the control board.
5. Close the control board cover and turn the screw clockwise.