Hi.
I have a problem with a Konica Minolta c280. It wasn't my machine, it comes dead and with used toner everywhere in machine, without some parts, toner even under PWB Box.
I installed new original IU - B, M, C. I installed a transfer belt with about 50k prints. Cleaned everything i saw - developing units, contacts with transfer, iu's, dev's, whole PH unit after i took it off, swaped dev K unit for a nice one, cleaned dev K clutch cuz it gaves me a white stripes.
After that machine seams to works fine, but next day sometimes a Magenta gives a background. Not on a whole page but in A4 there is background just some times. It seems like in first scan - 5cm ok, then background for 10cm, 1cm ok, 1mm background, rest ok (A4 LEF orientation). Othertime i saw a 1cm background, then whole page ok. This background is uneven density, from solid magenta to almost no magenta. It prints without a Margins from top to bottom !.
Second scan - When i printed cyan gradtiation it gives cyan gradiation with margins around like it normally does, and in this printout a magenta background for 1 cm without margins, from top to bottom solid, then some magenta stripes from top to bottom solid.
SKMBT_C36018040908282.jpg
SKMBT_C45218041009190.jpg
I have a problem with a Konica Minolta c280. It wasn't my machine, it comes dead and with used toner everywhere in machine, without some parts, toner even under PWB Box.
I installed new original IU - B, M, C. I installed a transfer belt with about 50k prints. Cleaned everything i saw - developing units, contacts with transfer, iu's, dev's, whole PH unit after i took it off, swaped dev K unit for a nice one, cleaned dev K clutch cuz it gaves me a white stripes.
After that machine seams to works fine, but next day sometimes a Magenta gives a background. Not on a whole page but in A4 there is background just some times. It seems like in first scan - 5cm ok, then background for 10cm, 1cm ok, 1mm background, rest ok (A4 LEF orientation). Othertime i saw a 1cm background, then whole page ok. This background is uneven density, from solid magenta to almost no magenta. It prints without a Margins from top to bottom !.
Second scan - When i printed cyan gradtiation it gives cyan gradiation with margins around like it normally does, and in this printout a magenta background for 1 cm without margins, from top to bottom solid, then some magenta stripes from top to bottom solid.
SKMBT_C36018040908282.jpg
SKMBT_C45218041009190.jpg