Removal and Installation 5. Remove 1 T-15 screw ( Type E ) from the top of the Assembly. 6. Remove the Ink Supply Station from the Printer. NOTE The ISS is a complete Assembly that includes the Cartridge Holder (top) and Tray (bottom). The complete Assembly must be removed/ installed together. 3 1 2 8-49 HP DesignJets 500 and 800 Series Printers Service Manual