Konica Bizhub C280 image Problem

[mearmi]

Konica C280 getting vertical patch

replaced all drums and transfer Belt.

please find the attached image and advise

thanks

[blackcat4866]

If that band is in the feed direction, It's magenta. Either a dirty laser slit glass, a bare spot on the developing roller, or possibly even dirty laser optics (internal optics). =^..^=

[mearmi]

If that band is in the feed direction, It's magenta. Either a dirty laser slit glass, a bare spot on the developing roller, or possibly even dirty laser optics (internal optics). =^..^=


Thanks a lot.

Replaced the Magenta Developer Unit as well but still same.

For laser how can we clean it? Or we have to remove it from the copier?

Regards,

[joelea]

Thanks a lot.

Replaced the Magenta Developer Unit as well but still same.

For laser how can we clean it? Or we have to remove it from the copier?

Regards,

Under the drum is another cleaning rod that cleans the window of the PH unit.

[blackcat4866]

If the wand does not help, then yes, you must remove it from the copier. Keep in mind that painted screws indicate critical adjustments, and should not be touched. You don't have the proper equipment to re-align laser optics, so just clean, not disassembly.

With a blank area as large as that you should have no trouble identifying the culprit.
=^..^=

[mearmi]

If the wand does not help, then yes, you must remove it from the copier. Keep in mind that painted screws indicate critical adjustments, and should not be touched. You don't have the proper equipment to re-align laser optics, so just clean, not disassembly.

With a blank area as large as that you should have no trouble identifying the culprit.
=^..^=
Thanks please advise in details

regards

[furius]

Had the same problem on a C454 the problem was the faulty laser unit.
Obviously it could also be an electronic board problem