Bizhub c 451 low color

[weez]

hey guys
Anyone know why the color of my bizhub c451 turn low for no reason ?
i have already replace the transfer belt 47281

[Zesti]

Poor secondary transfer I believe...

[copier tech]

hey guys
Anyone know why the color of my bizhub c451 turn low for no reason ?
i have already replace the transfer belt 47281

​What exactly is the issue? you have only posted a sample of black & cyan not sure why you would replace the transfer unit for a poor colour issue?