Improper Setup- Page 77

6. Routine Maintenance

69

When you replace the drum unit with a new one, you need to reset the drum counter by completing the 
following steps:

a

Make sure that the printer is turned on and the 

Drum

 LED is blinking. Press the front cover release button 

and then open the front cover.

b

Press and hold down 

Go

 for about 4 seconds until all the LEDs light up. Once all four LEDs are lit, release  

Go

.

Improper Setup

Do not reset the drum counter when you only replace the toner cartridge.

c

Take out the drum unit and toner cartridge assembly.