The No Drum message appears if the toner cartridge is placed in the machine without the drum unit. When the No Drum message appears, the following LED indications is shown on the control panel. The Error LED () will blink 3 times and turn off for 1 second.
Please follow the steps below to clear the No Drum message.
- Open the top cover.
- Put the toner cartridge firmly into the drum unit.
- Insert the drum unit assembly into the machine and close the cover.