This is an advance reminder for you to order a new drum, you do not have to replace it until it asks to do so. A drum unit is rated for 20,000 pages (5% coverage), it depends on your usage, if there lots of graphics of dark color, you have to replace it before it expires. You can reset it, if there is no quality issues. Procedures:[x]-key to press, {{
Display on the LCD}}[Menu], [5], {{
5 Default setting}};[2], {{
2 Scanner & Printer}};[0], [4], {{
04 Reset drum counter,
1=Yes, 2=No}};[1] {{
Reset Drum Counter, are you sure?}};[Enter].
FYI: I would recommend that you put a label "Drum reset" on the drum unit, remind yourself, that you must replace it, once you have a quality issue.