When to Replace the Image Drum Cartridge
When the drum reaches 90% of its life, the Status Monitor displays CHANGE DRUM. At this
point, be sure you have a new drum on hand.
Replace the old drum as soon as the print quality becomes faint or starts to deteriorate, or you
see the TONER LOW message.
See "How to Replace the Image Drum Cartridge."
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OKIPAGE 6w