C250i No yellow on rear side of page

[Gift]

Re: C250i No yellow on rear side of page

Not me personally but P8 & P21 is shown all the time so I'm pretty sure the yellow image is missing on the transfer belt.

Well I think checking with your own eyes is better than believing, especially if it's not a big effort to take a look. If the toner-image is fully there on the drum surface but only partially transfered on the belt you probably have an issue with it's inner parts (yellow 1st transfer roller).

[Toxic]

Re: C250i No yellow on rear side of page

Did you try to mark developing roller position and check after print does it moved?

[tulintron]

Re: C250i No yellow on rear side of page

You can do a test on an A3 or 11x17 sheet, with 100% coverage in yellow and during the process of transferring the drum to the ITB, you open the front cover to stop the process. At this moment, analyze the drum and the ITB

[Woxner]

Re: C250i No yellow on rear side of page

my two cents is the itb roller is not sitting down on drum. i have seen these break and do this

[Brad6784]

Re: C250i No yellow on rear side of page

my two cents is the itb roller is not sitting down on drum. i have seen these break and do this

[allan]

Re: C250i No yellow on rear side of page

Be lazy and see if you are creating yellow waste. If so its the TBU if not the drum or it is to far from the mag roller on one end else HV. Can win a prize for grammar with that. Its not the laser in my opinion looks like static.

[B0265]

Re: C250i No yellow on rear side of page

I think we have found the cause. The rear rib that put pressure on the developing unit look normal from the outside but when we did put some pressure on it we found that it's not fixed to the shaft so the plastic is probabaly broken. Now we must figure out how to get to this part and if it's possible to fix it. These parts are not listed in the parts guide manual.

[Cantechman]

Re: C250i No yellow on rear side of page

I think we have found the cause. The rear rib that put pressure on the developing unit look normal from the outside but when we did put some pressure on it we found that it's not fixed to the shaft so the plastic is probabaly broken. Now we must figure out how to get to this part and if it's possible to fix it. These parts are not listed in the parts guide manual.

Do you have a picture of where that part is? it would be good to know for future reference.

[copier tech]

Re: C250i No yellow on rear side of page

I think we have found the cause. The rear rib that put pressure on the developing unit look normal from the outside but when we did put some pressure on it we found that it's not fixed to the shaft so the plastic is probabaly broken. Now we must figure out how to get to this part and if it's possible to fix it. These parts are not listed in the parts guide manual.

You're welcome ..............

[B0265]

Re: C250i No yellow on rear side of page

Do you have a picture of where that part is? it would be good to know for future reference.

No picture, but if you remove the drum and dev unit and turn the release lever you can see the white ribs that put spressure on the dev unit.

[avecosat]

Re: C250i No yellow on rear side of page

No picture, but if you remove the drum and dev unit and turn the release lever you can see the white ribs that put spressure on the dev unit.

Hello, was the problem solved with this solution?

[B0265]

Re: C250i No yellow on rear side of page

Hello, was the problem solved with this solution?

No we have not repaired it yet. We will try to find out if the parts from a C258 can be used.

[joeywatt]

Re: C250i No yellow on rear side of page

Hello. I'm having the same issues with you. Can I ask if there is a solution? Website Website

[Mildred]

Re: C250i No yellow on rear side of page

I had an issue the other day when changing a drum.

When I released the pressure of the developer I lost magenta on the rear side of the page. Just like your yellow.
I stopped the print and checked image on the drum and transfer belt. Found it was not transferring developer from developer to drum.
My TCR levels were correct around 6 to 7.

What I found was the developer ! Just above the developer roller there is a black cover that goes the length of the developer roller. It slides in and clips into place. From a quick glance it looks in place but is loose and held in by tape if I recall. Not properly clipped in. When this guide is out of position it alters the developer to drum spacing causing faint prints front to rear.

I have attached a picture of a developer with a arrow pointing to the guide I am referring.

Hope this helps, if it the same as my issue I had.

regards

[sylvain alp]

Re: C250i No yellow on rear side of page

have you checked the patches on the belt and check if there are any P. messages?

have you checked the patches on the belt and check if there are any P. messages?