[Misc] Konica minolta c284 unsolvable problem

[Narcis07]

Hello,
Please help me!
My konica minolta c284e prints a thick black line with spots, that exceeds the print area (different each time) when it heats up (after 10/20 prints)
After cleaning the belt, it shows a fade where the black line used to appear.
I had 3 experts try to fix it and nothing!
I changed the following:
*fuser unit
*black developer unit original
*black image unit (cylinder) original
*image belt aftermarket
*Cleaned the entire machine
I even bought original toner....
I have a business at the beginning of the road and when things were starting to go well, this problem appeared and it is eating up my money.
They are usually much worse than in the attached picturesfc557871-b5b5-4b1a-8a47-30719374beba.jpg70099e4c-2ab0-4cc6-8b28-446f52df3ee1 (1).jpgasdasdsad.jpg

[copier tech]

Re: Konica minolta c284 unsolvable problem

Every time I see a weird print quality issue its been caused but non genuine parts and / or toner as in your case.

[Hansoon]

Re: Konica minolta c284 unsolvable problem

Good Lord, cover those drum units against light. (those cute green cylinders.....).
They may not be exposed to light and will be ruined in a short time lying around like in your picture.

My guts are telling me that it might be the ITB first (mostly its cleaning blade), second but much less, the fuser unit.

A good technician with experience with such machines could tell you immediately which parts could be responsible, without throwing expensive parts to a machine for a simple problem like that.......

Hans

[kingarthur]

Re: Konica minolta c284 unsolvable problem

That looks to me like a dirty MC corona on the K drum, usually caused by a failing DV, or non genuine DV unit, it may not be the black DV, but any DV or DR units over life, need to be replaced

[Narcis07]

Re: Konica minolta c284 unsolvable problem

Good Lord, cover those drum units against light. (those cute green cylinders.....).
They may not be exposed to light and will be ruined in a short time lying around like in your picture.

My guts are telling me that it might be the ITB first (mostly its cleaning blade), second but much less, the fuser unit.

A good technician with experience with such machines could tell you immediately which parts could be responsible, without throwing expensive parts to a machine for a simple problem like that.......

Hans

There are no good technicians anymore.
I will buy corona grid (under image unit) I will make an update next week about what happened.
Thanks for advice with light and those cute green cylinders.....
see ya

[Narcis07]

Re: Konica minolta c284 unsolvable problem

That looks to me like a dirty MC corona on the K drum, usually caused by a failing DV, or non genuine DV unit, it may not be the black DV, but any DV or DR units over life, need to be replaced

Already at the courier.
The first cheap part bought for the printer
I will make a post after I receive it

[Gift]

Re: Konica minolta c284 unsolvable problem

Better get a complete and original drum unit instead of refurbing the old one in a bad way (=skipping components).

[Cantechman]

Re: Konica minolta c284 unsolvable problem

There are no good technicians anymore.
I will buy corona grid (under image unit) I will make an update next week about what happened.
Thanks for advice with light and those cute green cylinders.....
see ya

So you come on a site where technicians help others and while asking for help you say there are no good technicians anymore? That's a great way to ask for help.

[Hansoon]

Re: Konica minolta c284 unsolvable problem

So you come on a site where technicians help others and while asking for help you say there are no good technicians anymore? That's a great way to ask for help.

Why did you understand this the other way round?

He's not talking about those excellent, great technicians her on this site. He, Narcis07, was talking about the technicians who were “servicing” his, the end user's, machine. Depending on the amount of parts, they (The local technicians the end user had to deal with) are throwing at the machine, obviously not knowing what they are doing.

Hans

[femaster]

Re: Konica minolta c284 unsolvable problem

If it's only doing it when it heats up, check this:

Just above the fuser in the machine are 4 idle rollers that are just over 3/4" (just under 2.25CM) wide. They could either be a clear (opaque) color, or more likely they are black. If they are black, there is a VERY good chance that the junk you are seeing is because there is a large toner buildup on at least one of those rollers in the location that is leaving the crap on the pages that you are seeing. It's a common problem with the black rollers.

Clean all 4 of them off and see where you end up. There might also also be some on the 4 grey rollers on the top of the right side access door that match up with the black idle rollers.

[tsbservice]

Re: Konica minolta c284 unsolvable problem

If it's only doing it when it heats up, check this:

Just above the fuser in the machine are 4 idle rollers that are just over 3/4" (2.25CM) wide. They could either be a clear (opaque) color, or more likely they are black. If they are black, there is a VERY good chance that the junk you are seeing is because there is a large toner buildup on at least one of those rollers in the location that is leaving the crap on the pages that you are seeing. Clean all 4 of them off and see where you end up. There might also also be some on the 4 grey rollers on the top of the right side access door that match up with the black idle rollers.

Lol 🤣 it would be such a shame throwing parts for that. Btw I bet 100% they are black.

[4Toon]

Re: Konica minolta c284 unsolvable problem

Looks like a transfer belt issue. The belt is not getting cleaned properly when printing best way to find out is do a panic stop when you print your image pull out the drum and belt see where the line is with the image on the drum and belt too 11x17 image is the easiest to do this with as you have more time to stop it in the perfect spot to see both, if it is not on your drum but on the belt then its your belt if its not on both then do another panic stop when the image is half way through the fusing unit and see if one side has the line and the other does not.

[techsxge]

Re: Konica minolta c284 unsolvable problem

Can you go to service mode and do a gradiation pattern printout? I have a realy "dark" feeling about something i experienced recently which looked about the same

[Narcis07]

Re: Konica minolta c284 unsolvable problem

Good news everyone! I repaired it by changing the part called charge corona. but the problem is that the cylinder asembly was new and still broke. considering that the developer unit is also new, I hope it lasts. thank you very much! 🥳🥳🥳
I received many indications and quickly on this forum. So if you have something similar, change the developer unit and charge corona at the same time. Cheers!
😁😁😁😁😁😁😁😁😁