How to Reset the Drum Count on an Oki C9800

Written by jeff grundy Google
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How to Reset the Drum Count on an Oki C9800
(Jupiterimages/Pixland/Getty Images)

If you have an Okidata C9800 Laser Printer and use refilled toner drum cartridges, you might have noticed that the machine produces random print errors, reports that the drum is out of toner, or sometimes stops in the middle of printing due to low-toner warning messages. This happens because the microchip does not reset whenever you refill the cartridge drum with toner.

If you want to reset the drum count so that the warning messages will not display and halt print jobs, you must use a manual reset method to override the cartridge drum's built-in microchip.

Skill level:


  1. 1

    Turn off the Okidata C9800 Printer. Press and hold the "Up" and "Down" menu buttons while your press the power button to turn the printer back on. Wait for the "OKI USER" prompt to display on the menu screen.

  2. 2

    Press the down arrow button on the face of the printer until you reach the "Engine Dialog Mode" option. Press the "Enter" button on the printer. The message "Diagnostic Mode xx.xx.xx S-Mode" displays on the menu screen.

  3. 3

    Press the down arrow button until you see the "NV-Ram initial" prompt, then press the "Enter" button. The message "NV-Ram- Initial Table 1" displays on the menu screen.

  4. 4

    Press the "Online" and "Enter" buttons on the printer at the same time. Wait for the message "Executing Reset" to appear on the menu screen, then hold the buttons for at least 10 seconds.

  5. 5

    Release the "Online" and "Enter" buttons after holding them for 10 seconds. Turn the printer off, then turn it back on again. The drum count for the C9800 printer resets to the 100 per cent.

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