CN727-69006Tool - Calibration sheet - Includes cleaning cloth and aligns unit heads / scanner. Seems like the HP calibration sheet is a necessary component required for scanning accuracy.
CR357-67099Tool - E-Box Fan assembly - For the T930, T1530, T2530 series
Q6683-67028Tool - Tool Kit - Includes the flex cleaner, screwdriver torx T-15, dispenser oil, insert spring tool, alignment manual pinch arm, and media driver tool - For use with the DesignJet Z and T printer series
CR357-67066Tray Assembly - Basket output tray assembly (updated to include T9x0/Tx500 Stand) Where paper rest after it has been printed.
DesignJet T2600dr 36-in Multifunction Printer parts list