Removal and Installation 4. Remove 1 T-20 screw ( Type F ) from the front of the Right Hand Cover. 5. Open the Window and remove 1 T-20 screw ( Type F ) from the side plate. 6. Remove the Right Hand Cover. NOTE Always keep the Ink Cartridge door open when removing/installing the Right Hand Cover. 8-8 HP DesignJets 500 and 800 Series Printers Service Manual