magenta colour not appearing

[cosbi]

am working on irc4580,when i run full auto gradation magenta color does not show on the paper at all.
i have tried the machine with new magenta drum unit but the problem still exit.
pls any help is welcomed

[Aneurysm]

Welcome Aboard!

[livewire]

http://www.copytechnet.com/forums/canon/

There is the right place.

[slimslob]

Glad to have you join us.

[MunsterTech]

hi,

could be a clutch at the back of the machine, not 100 percent sure what one it is off hand, but there are 4 of them and they are interchangeable, swap one with another colour and see if if the problem moves, toner clutch or something similar if i remember.