Oki ES4192dn User Manual - page 826
Before Replacing
When an image drum nears the end of its lifetime, the "Image Drum Unit Near Life" message is displayed. Have a new image drum
ready.
When the "Please install new Image Drum Unit." message is displayed and printing stops, replace the image drum.
When using A4 paper (simplex printing), the estimated replacement cycle of an image drum is approximately 30,000 pages. This
estimation assumes the standard use condition (three pages are printed at a time). Printing one page at a time reduces the drum
lifetime approximately by half.
The actual number of printed pages may be less than half the above estimation depending on the printing conditions.
Note
The actual number of pages you can print with the image drum depends on how you use the machine. It may be less than half the
above estimation depending on the printing conditions.
Printing quality may deteriorate after 1 year following the unpacking of the toner cartridge. Replace the toner cartridge with a new
one.
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