Black Spots in one line (4555i and others)

[stern.detmold.32756]

Hi everyone, i have a few copy machines that print spots in one line, everytime on the same spots on the pages. is it a drum problem maybe?2779.pdf

[Kyo fan]

Re: Black Spots in one line (4555i and others)

This is the main charger on Drum K. Take it out and give it good cleaning. If it's damaged, replace it. It's MC-8705 (302K993060).

[itchyfinger@att.net]

Re: Black Spots in one line (4555i and others)

measure the distance between the dots. then look at the repetitive guide in appendix and it will give you your answer

[Phil B.]

Re: Black Spots in one line (4555i and others)

This is the main charger on Drum K. Take it out and give it good cleaning. If it's damaged, replace it. It's MC-8705 (302K993060).

i have found that you can use " Nu Finish " to clean the PCR.. it also makes the print bolder!

[daveh12]

Re: Black Spots in one line (4555i and others)

Charge Unit definitely, remove and clean, wipe dry with clean dry cloth afterwards. these charges are troublesome, check the surface of the charge roller for bumps while cleaning, if present replace the charge unit.

[Ropariva]

Re: Black Spots in one line (4555i and others)

Hi everyone, i have a few copy machines that print spots in one line, everytime on the same spots on the pages. is it a drum problem maybe?[ATTACH]39267[/ATTACH]

Main charge rollers. They have a very high failure rate even on the new generation machines. Lucky to get 100k from them. The surface blisters and gives spots at approx 38mm intervals.