Xerox 560 Black - Problem Quality

[ruimestre]

IMG_1926.JPGIMG_1927.JPGIMG_1928.JPGAttachment 26757Hy all.

I would like some advice on your part regarding my xerox 560.

As shown on the pictures below when printing colour or black it makes a shadow around letters in full black 100%
and some light bands, i've replaced the drum cartridge and the problem stayed the same, then i changed the black developer and housing and still the same.

Only thing i haven't touch is the Laser, i'm afraid off taking the unit off due to the flat cables....

Is there anything else that i should do to fix it.

Thanks in advance.

CheersIMG_1927.JPGIMG_1928.JPGAttachment 26757IMG_1926.JPG

[Exok]

Assuming you have done all image quality adjustments and calibrations, it could possibly be due to poor drum ground or a defective K developer bias HVPS.

[ruimestre]

Assuming you have done all image quality adjustments and calibrations, it could possibly be due to poor drum ground or a defective K developer bias HVPS.

Thank you

The resolution was by dismantling and cleaning deep the ros (Laser).

Cheers

Rui Mestre