Solution
To manually reset this message, follow these steps:
1. Open the cover to access the toner cartridge and drum unit.
2. Remove toner cartridge unit.
3. Check for a semi-circle groove with a white tab on the toner/drum unit. If you do not see this, this procedure may not work for you.
4. Replace the toner/drum unit back into the fax machine.
5. Press the Option button.
6. Press the Start button.
7. Enter '10' on the keypad and a message on the LCD should read 'Accepted.'
8. Close the cover.
9. The error message should disappear and your fax machine is ready for use.