HP Designjet repair can be done by anyone with average mechanical skills. The most common HP plotter repair is either the carriage belt or ink tube system replacements. Everything is included to successfully replace the belt or tube system and make all necessary calibrations. Each Designjet plotter repair kit has new parts, illustrated instructions, specialty tools (belt kits), non-evaporating oil, , compete service manual on CD, necessary calibration media (belt kits) and free expert technical support (800-959-1575). Tube systems are refurbished with new parts and guaranteed for one year.