bad superpost magenta on cf3102

[acl]

Hi,
excuse my bad English, I wrote from France. I will present my problem.
I have a misregistration (bad superpost) of magenta on my copies. Not on the whole length of the copy, but like a wave.
For example, I when I duplicate an A4 on A3, the left side has shifted and right side ok, or vice versa, or is to throw and after a moment code P21 appears.
I have the hanger the belt & unit yellow image, magenta image unit, I clean quadri hopper, the belt, the sensor chip stacking, but the default always come back after about 2000 copies .
Do you have any suggestions.
He seems not to have default engine, or belt, or the image units.
I have no more idea !!
I await your help.
thank you in advance.

" request costs only moment of embarrassment, do not be embarrassed to ask it all his life."
japanese mind

[RockETop]

Take the transfer belt out a few inches, move the shutter and clean the color registration sensors with a q-tip.

[acl]

Take the transfer belt out a few inches, move the shutter and clean the color registration sensors with a q-tip.

Thank for your help, and excue my too long answer's time, but i've done this process by the past, but the trouble is always here.

I disassemble the led's ramp block, but no way. I don't see any trouble.

I think for a trouble on the image unity with a vibration, or belt's flaw, but i have change both pieces and the problem still alive.

I notice that the Image Unity magenta will be full. then i disconnect the toner apport magenta to see if the "AIDC" sensor will be broken, but after a moment, i have a message, that the unit was empty. then the AIDC seems to be good.

I clean the color pastille and color registration cell (sensor), but any way too.

i join a pdf file to show the trouble.

thanks

[Morlock49]

it looks like the magenta print head is going faulty, 1 maybe 2 led registers on the way out. Swop out the magenta printhead and see if that cures the problem

[connecticcut]

il faut nettoyer la transfert belt avec un chiffon (P21)

[acl]

Thank you.

I try to do it tomorrow, and i send you a message.

your welcome

[acl]