[Electrical] black pages bizhub c224

[E-ring]

Hello!
We have a C227 here who prints black pages, sometimes it just douples the image, sometimes the whole page is black like a halftone 100 testpage, full color is visible under.
Drum, developer, HV, MFP board, transfer unit replaced. Contact spring drum ok.
Do we miss something simple here?
Thank you, all help appreciated

[guitar9199]

Re: black pages bizhub c224

Is this printing, or copying?

If it's just on copies...what is being copied? Sometimes there are anti-counterfeit marks or security features on pages that won't allow you to make a copy.

[tsbservice]

Re: black pages bizhub c224

Sounds like an erase lamp of K drum or Laser.

[E-ring]

Re: black pages bizhub c224

IMG_20190424_184516.jpg
Thanks for replying.
It's print and copy, eraser lamp works, red light visible.
Main power supply and laser would be next, but i still feel there's something I am missing.

[E-ring]

Re: black pages bizhub c224

It was the Main Power Supply...

[srvctec]

Re: black pages bizhub c224

So, is this a C227 like in the OP or a C224 like in the title?

[allan]

Re: black pages bizhub c224

So, is this a C227 like in the OP or a C224 like in the title?

Who knows.
Main PSU really?