M281 prints red over whole document

[Roderos]

Hi

M281fdw was working fine and suddenly started to print red colour across the whole documents, please see pics.
What it should be? Brand new non original cartridges installed. I use this brand for years and never got any issues, and when I reinstalled them it was working fine.

[Valsimot]

It's the toner cartridges. Magenta for sure, and looks like yellow too.

[Roderos]

What can resulted in these? As cartridges were installed brand new (non original) everything worked, and then person came back to me with this issue. I suspect that they might dropped cartridges?

[Valsimot]

If dropped the pattern on printed sheet would be different, I think the toner cartridge is defective or badly remanufactured, it happens more that you think.

[Roderos]

Would try to replace both magenta and yellow and see how it works.