Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

[Honpress]

Hello! First post after replacing some parts, which were overdue..

So I bought some parts that had to be replaced, including the developers. After replacing these, I was able to make a print, which I made a photo of it.
I'm guessing this has something to do with the black developer unit?

At this point I'm not able to continue with the printer, because of another code the C3102 (ordering these gears set to replace them), but I think the problem with the streaks will not go away, so I'm going to need a solution for that anyway.

I hope somebody can help me, thanks in advance!


Best regards,
Ilse

[Markks]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

Hello! First post after replacing some parts, which were overdue..

So I bought some parts that had to be replaced, including the developers. After replacing these, I was able to make a print, which I made a photo of it.
I'm guessing this has something to do with the black developer unit?

At this point I'm not able to continue with the printer, because of another code the C3102 (ordering these gears set to replace them), but I think the problem with the streaks will not go away, so I'm going to need a solution for that anyway.

I hope somebody can help me, thanks in advance!


Best regards,
Ilse

Looks like a bad black drum what is count on drum ? I know you said you replaced the developer, what is the life count of the developer units?

[Honpress]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

Looks like a bad black drum what is count on drum ? I know you said you replaced the developer, what is the life count of the developer units?

Hello, thank you for your respond
The drums were also replaced at the same time (2 days ago). I replaced all drums, drum cleaning blades, developers, charging coronas and the belt.
I found a video (only one I could find) on youtube with what you have to do after replacing them on the screen on the machine, adjusting, rotating drums etc.. I got different codes everytime I tried.

[Toxic]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

What kind of error codes you get?
Replaced parts not OEM?
Measure distance marked on your photo.

Repeater Mark
[Symptom]
On the output image, cyclic soilage or white area appears.
[Cause]
Failed mechanical part.
・Approx 188mm pitch: Damage on the drum surface.
・Approx 251mm pitch: Damage on the fusing belt
・Approx 53mm pitch: Developer conveyance failure of developing sleeve.
・Approx 95mm pitch: Soiled second transfer roller

[Honpress]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

What kind of error codes you get?
Replaced parts not OEM?
Measure distance marked on your photo.

Hi Toxic,

Thank you for your respond.
I measured the distance and it was 188mm. Just in case I swapped the black drum with the Cyan drum. And it disappeared. So kind of strange. What I still do have with black, that on the whole page there are streaks. I've added 2 pictures of it, hopefully you can see what I mean. You can also see these on the paper, where's no print. And specially on yellow it seems..
Any idea what I can do to fix this? I think it has to do with the developer somehow or there is to much toner? I also replaced the blades of each drum.


0c828df960eec42081c1fe52ea1b0fd2.jpge1e8e029a9a0945277ec621324894375.jpg

Sorry for al the questions I don't have a manual so I'm just trying to figure it out, searching and asking on this forum and searching through the internet. Don't know which manual I need or can buy necessarily.

Thank you.

Best regards,
Ilse

[Toxic]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

Did you replace transfer belt cleaning blade?
Print some blank large format paper and then check does that black lines have repeating pattern.

[Honpress]

Re: Konica Minolta Bizhub Press C7000 black streaks, after replacing developer

Hello Toxic,

No I haven't replaced that one. Have been cleaning it from time to time. I've added a picture of the blanc sheets I just printed. A bit difficult to see, but there's a pattern with 3 light stripes (going from left to the right) and 4 little black spots, that also seems to repeat itself. When I have a look the counter/limit of the transfer belt cleaning unit it says 01057965/0070000. So it's a bit overdue as well, guess I will have to replace that as well... But I don't know if that also has something to do with the bad black uneven prints, because it's extreme heavily with the black and not really the other colors.

stripes.jpg

Thank you!