When using Integrated Color Care Unit IQ-501, always mount Video Interface Kit VI-511 in the main body.
When using the Relay Unit RU-702, always install the Auto Inspection Unit UK-301 in the Integrated Color Care Unit IQ-501.
When the Finisher FS-532 equipped with the Post Inserter PI-502 is installed immediately after the Relay Unit RU-518, the sub tray or the output extension tray of the Banner Tray Unit MK-740 cannot be mounted to the Relay Unit RU-518.