Message saying drum unit life on OKI PRINTER C510dn

SOURCE: OKI c5650 flashing "K drum life" I buy new charge

1. Turn machine on while pushing and holding the TWO up/down menu buttons at same time.
2. Menu window will show "OKI USER"
3. Scroll to " Engine Dialog Mode" is indicated. Push Enter button.
4. "Diagnostic Mode xx.xx.xx S-Mode is indicated.
5. Scroll to "NV-Ram initial" is indicated. Push ENTER.
6. Window shows "NV-Ram- Initial Table 1".
7. Push ONLINE and ENTER Buttons simultaneously and HOLD for 10 seconds after you see "Executing Reset" appear in menu window.
8. Restart printer.

All toner, drum, fuser and transfer figures return to 100%.

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SOURCE: On Oki C5600 printer with error message

Try this procedure, don't know if it will work on your models.

Turn off the printer
Turn the printer on whilst holding down Menu button. (Display says user maintenance.)
Press the menu button three times. (The display will say drum counter reset.)
Press enter key. The system should go back on line, if not press on-line key.

SOURCE: My oki c5700 shows the message: " K drum life" how

A drum can print only a limited number of pages before failure - your drum has reached that number and must be replaced.

SOURCE: reset drum life on oki c5500n

try this:

1) Power on printer while holding both the + & - buttons simultaneously; release when "Okiuser" is displayed.
2) Press + or - until "Engine Diag" Mode is displayed; press Enter and Diagnostic Mode xx.xx.xx will be displayed
3) Press and hold both Enter & On-line simultaneously until Eng Diag Level3 is displayed

4) Press + or - until Local Parameter Set is displayed; release and press Enter

5) Press + or - until it displays Factory Mode; if it displays Factory Mode Twice with an asterisk next to one then it is in Factory Mode; Press Enter, Press + or - until it displays Factory Mode & Shipping Mode on the display; then press and hold On-line & Cancel simultaneously; when it stops blinking an asterisk should be displayed next to Shipping Mode, which becomes the default mode.

6) Power printer off then on to complete the procedure.

SOURCE: OKI C6100 has the following error when printer is

Try this:

1.Press Menu = printer displays "Paper Menu"
2.Press Next 4x = printer displays "System Menu"
3.Press Select 1x = printer displays "Factory Defaults"
4.Press Next 7x = printer displays "Reset Toner Life"
5.Press Select 1x = printer displays "Resetting Toner Page Count"
6.Press Ready