Phaser 6125 printing in grey

Hi there,

My phaser 6125 is printing in grey rather than black. I've tried the following:

- replace the cartridge
- run all the admin tests through the menu, refresh the drum etc etc
- cleaned the housing for the cartridge
- cleaned the housing once you remove the phaser unit
- entered the service menu and ran all the diags and tests in there

No joy with any of that. Anyone got any further ideas?

I like the printer so loathed to throw it out the window but getting very close.

All help or suggestions are very welcome.

Thanks,
Elf