CL4000 slanted lines in colour areas

[Voltage]

I have a CL4000 which made perfect print until a few workshop techs cleaned it. Now i get cross line in the mid and low tone areas of the color test pattern.

I think it has something to do with the color registration. I have cleaned the 3 sensors and did color registration under the maintenance section.

If you you Acrobat readers loupe tool it is easier to see.

[Philinghorn]

At an educated guess I would say its the dev rollers, which are part of the
PCU's, do have any PCU's you could try from another printer?

Good Luck

[Voltage]

Nope unfortunately not. We are a small business. Only have 2 in our service area

[Venom]

Very common problem> The dev clutches are gummed up> replace 4 clutches and dev units

[Fearless V K]

It's possible the clutches are the problem, but when that happens you usually see wider diagonal 'voids' or light bands through the entire image, not the small cross-hatch pattern shown on your PDF, however I think the mag rollers do have a similar surface pattern on them. I would try forced line positioning first, and reset ACC to factory value before replacing the clutches, at least it doesn't cost anything to try that.