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Check if HDD is set to "Installed" into the Service Mode..

if you mean PH unit glass,


A1RFR74000 here it is

Yes :D

Yep, black drum failed, as guys mentioned and advised to change it. But I learned how to solve it temporary, earlier I have never touched Vpp values, did not know anything about them😁

Guys, I solved this issue by increasing Vpp-K value. Image became perfect. Thank to all of you and especially to tsbservice! Solution is temporary, customer will change black drum with new one after...

All Vpps are above 1000

Many many thanks for your advices. I will try these steps and will be back with results

Thank you for your answer.

When print in color, there are black lines but shape of them are straight, not as wavy as you can see in attachment.

One question, what means SP?

I have not any of the original image, this phenomenon appears only on BW prints. On color printouts there are different vertical lines.
Yes, the sample is black only scan. Page is fed LEF. If the...

Hello guys.

Bizhub C258 prints very strange black lines.

Swapping PH unit + PH unit control board did not help;
Swapping FRSB did not help;
Swapping High Voltage Unit did not help;
Swapping...

Total counter is approx. 500K and it only happens on the back side

Hi all,

I have a strange problem on Bizhub Pro 951. Customer uses A3 80gsm plain paper and after adjusting and matching both sides from "both sides adjustment" menu, it starts printing perfectly,...

Check Troubleshooting Guide for C1100. I think there's something deformed around fusing unit, or there's some short circuit :|

Send it to Georgia :D

Thank you, I added trays to auto selection in User menu and it started working.

it's useful when printing multiple page sized PDF on one size of paper, for example, if 1st page is A4 and 2nd page is A3, this option will print both of them on same size of paper. My question is...

Can you give me more detailed explanation please?

No, I mean print PDF document, not scanning.

Hello guys,

I wonder if there is some solution about how to print multiple page sized PDF document on AccurioPrint C3070L. For example: I have PDF file with 4 pages, first page is A4, second A5,...

Hello guys, I returned to work after long time due to pandemic.

So today I turned off Drum Potential Sensor with dipswitch, tried to print a number of sheets and density started becoming higher,...

Thank you for your suggestions! I really did not know that this dipswitch gives effect after 1000 prints. I will try your ideas, as soon as coronavirus leave us alive :D

You're welcome. You can call KM service engineer for updating firmware, or maybe someone on this forum can send it to you.

I know that they are separately, but it is not recommended to update only one of them, stable working of printer is not guaranteed in that case. If you update firmware of one of them to the latest...

It's little surprising but mentioned problem did not occur in other countries, Georgia is only one and I'm sure that this is because of bad environmental conditions. Here are specific customers, it's...

I had similar problems many times. Replacing DCPU solved them for me.