Lexmark T620 Service Manual - Page 310

4069-5XX/7XX Scheduled Maintenance 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 and charge roll at this interval to maintain the print quality and reliability of the printer. The parts are available as a maintenance kit with the following part numbers: 99A2408 - 115V 875W Models 520/52n 99A2407 - 220V 875W Models 520/52n 99A2411 - 115V 875W Models 722/72n 99A2410 - 220V 875W Models 722/72n After replacing the kit, the maintenance count must be reset to zero to clear the "80 Scheduled Maintenance" message. Refer to "Maintenance Page Count" on page 3-31. 6-2 Service Manual