• T65x
• X65xe
• T650dn
• T650dtn
• T650n
• T652dn
• T652dtn
• T652n
• T654dn
• T654dtn
• T654n
• T656dne
• TS654dn
• X651de HV
• X651de LV
• X652de HV
• X652de LV
• X654de HV
• X654de LV
• X656de HV
• X656de LV
• X656dte HV
• X656dte LV
• X658de HV
• X658de LV
• X658dfe HV
• X658dfe LV
• X658dme HV
• X658dme LV
• X658dte HV
• X658dte LV
• X658dtfe HV
• X658dtfe LV
• X658dtme HV
• X658dtme LV

The operator panel displays the message 80 Scheduled Maintenance at each 300K page count interval. It is necessary to replace the fuser assembly transfer roller charge roll and pick tires at this interval to maintain the print quality and reliability of the printer.