Hi,
In this case you really need a tech. It could be from the black LPH (Led Print Head), or (worst) from the ESS PWB (main board of the machine).
Gabi
Sorry to hear that... that's unfortunate (and surprising).
I personally can't think of anything else to try. But if I do think of something, I will post again.
Good Luck!
Andy
Replacing the drum cartridge did not change anything.
@ mhv... Yes, start with replacing the black drum.
@gabi... nice catch! I didn't notice that!
Yes.
Correct that a power off/on did not fix the issue. So should I try replacing the black drum cartridge?
Hi,
It could be a problem from black drum cartridge (posiible discharge as per Andy indication), because from your image there is no image interruption on color mode (on lower of the page, cyan/blue text).
Gabi
Can you post an example of the page and defect for inspection?