Konica Minolta Bizhub 554e printing and copying blank

[Khumz]

Hello...
I have a Bizhub 554e that prints and copy blank pages. Even internal print outs still come out blank. I changed dev unit, drum unit and I.T. belt unfortunately same problem persist. Checked toner hopper all looks good. The machine initialize normal, no error codes.
Any ideas and suggestions please.

[femaster]

Run a halftone page and force a jam (by opening the right side door) just as paper passes through the registration rollers. Pull out the drum and check to see if there is any toner / image on the drum and transfer belt. That will hopefully narrow things down a bit.

[tsbservice]

Mark developer unit by brushing a bit mag roller does it turns?

[copyman]

Did this happen all of a sudden or gradually get lighter? What is page count?

If completely blank then I would look at loss of high voltage. Any motors not turning developer unit, trans belt, etc would throw a code. Unless it's a higher meter machine and possible developer gears are bad and not turning mag roller (like tsb posted)

[Ziggy]

Mark developer unit by brushing a bit mag roller does it turns?

also put a small black mark with sharpie on outer edge of drum then pull it out to see if its turning.

[DMSK]

If you access techrep mode , do you see an oil can icon? Your printhead may have failed and it will not trigger an actual error code . It may not register a registration patch on transfer belt

[Khumz]

Run a halftone page and force a jam (by opening the right side door) just as paper passes through the registration rollers. Pull out the drum and check to see if there is any toner / image on the drum and transfer belt. That will hopefully narrow things down a bit.

It seems there is no toner image on both transfer belt and drum unit. Although i did check the transfer belt, the drum unit and the dev unit are all turning.

[blackcat4866]

You have narrowed down the problem a little. It could be the printhead unit or the MFPB. Can you print an internal test pattern?

[Khumz]

hi guys, thanks for your input i managed to solve the problem. The solenoid on the main drive assembly was stuck and this is the reason why the dev unit was not turning.

[Ziggy]

hi guys, thanks for your input i managed to solve the problem. The solenoid on the main drive assembly was stuck and this is the reason why the dev unit was not turning.

Glad you fixed it but you said that the dev. unit was turning.

[Khumz]

Glad you fixed it but you said that the dev. unit was turning.

Running the machine with the dev unit externaly connected the drive gear turns.

[informaticaoffice]

Hi I don't know if you solved it but if you have blank pages both color and black and white.
It happened to me and I had to replace the HV Board.
Behind the board assy.