Replacing the drum unit; Improper Setup- Page 77

Routine Maintenance

69

5

Replacing the drum unit

5

CAUTION

While removing the drum unit, handle it carefully because it may contain toner.

Every time you replace the drum unit, clean the inside of the printer. See 

Cleaning

on page 73.

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. Open the front cover.

b

Press and hold down the white 

Go

 button for about 4 seconds until all the LEDs light up. Once all four 

LEDs are lit, release the 

Go

 button.

Improper Setup

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