SPC811DN problem (Uneven color)

[FASTSTI]

I have a spc811dn

and have the following the user has changed all the pcu units same results

[FASTSTI]

Oops can this be moved to the printer section sorry

[mikadonovan]

In the G133 hardware guide it specifically states not to extreme the settings on the print quality tab of your driver. Maybe that could be causing this issue, but it sure does look like a cyan PCU problem. The fact that your calibration sheet also shows the light areas also points to the PCU. Is aftermarket toner being used?

[FASTSTI]

In the G133 hardware guide it specifically states not to extreme the settings on the print quality tab of your driver. Maybe that could be causing this issue, but it sure does look like a cyan PCU problem. The fact that your calibration sheet also shows the light areas also points to the PCU. Is aftermarket toner being used?

the 2nd page is an internal test page no driver relation

[Herrmann]

The Problem lies definately in the cyan Area, as the first Bar is a "process black", comprising of CMY, while the second bar (only K) is even. I would suggest you to have a closer look at the Transfer Belt Assy, especially the cyan transfer Roller and (worse) at the PCU Driving Unit (one whole Assy, its a Pain in the Ass to replace it)

Good Luck

[zico21]

I second the thought of a Transfer Belt issue.

A quick test for this would be to print a test 11x17 solid color box of the suspect color and stop the printing by opening a door as the LE of the print enters the fuser. Pull out the Transfer belt unit and check the image. We've seen similar looking prints when the appropriate transfer roller under the transfer belt isn't moving properly to prevent even pressure on the transfer belt to the drum.

I have to admit thought, that it is usually more of an op-side to non-op-side issue in such a case as I recall.

[zyqwiz]

Looks like uneven drive - dirt in a gear tooth?

[Sashko]

Problem in the development section.
Two possible causes:
1 - poor connections on the development roller shaft
2 - the development roller is bad

[Venom]

Looks like cyan developer is low

[techspec]

By the space of the banding it looks like an issue in the cyan dev unit or possibly with the charge roller.

I have had this issue on various SPC 811 and 820's

The charge roller is easily removed, turn the unit upside down and gently unclip the charge assembly and clean with a lint free cloth and a drop of water.

And if its not that


Split the cyan unit like you would on a MPC and empty all the cyan dev from the unit and thoroughly give the unit a good clean then stick the developer back in. I found this will work for a week or two. But your best option is just to bite the bullet and order the cyan unit Part No:820029

[Herrmann]

The Poster mentioned, that his Customer changed the PCU's already to no avail, so i do not think, that the Developer Unit is Part of the Problem here.