If the message still appears, do the step.7 and step.8 again.
Replacing the imaging unit
The machine uses four colors and has a different imaging unit for each one:
yellow(Y), magenta(M), cyan(C), and black(K).
When the life of the imaging unit expires totally
• The status LED turns red on and the display screen shows the error
message for replacing imaging unit.
• Check the type of the imaging unit for your machine.(see "Supplies and
accessories" on page 160)
At this stage, the imaging unit needs to be replaced.
1. Open the front
door.
2. Push the left/right locking levers and push inward at the same time as
shown below. Then remove the waste toner container.