MP2501

[Gab]

I replaced drum, developer and blade and executed the proper sp modes.
After the replacement, image at the upper side for about 7cm is light.
I cleaned optics, laser unit , used an other opc drum, checked separation .
Also i checked developer distribution on magnetic roller and looks ok.
I executed sp 2 802 and 2 801 with no result also i noticed when i try to make darker the image
it doesn't has any effect on image. I think to replace developer (again) Any idea?

[StephenB]

Re: MP2501

Just chased my ass for a couple of months. There are these new "dark greenish" compatible drums sold by several suppliers. most of the time they set up fine, but quickly go to poor density.
I had the same thoughts as you, proper set up ? bad dev ? Turned out to be bad drums.
Hope this helps

[Gab]

Re: MP2501

Just chased my ass for a couple of months. There are these new "dark greenish" compatible drums sold by several suppliers. most of the time they set up fine, but quickly go to poor density.
I had the same thoughts as you, proper set up ? bad dev ? Turned out to be bad drums.
Hope this helps

I have tried with an OEM OPC drum (now ihave OEM one in the machine ) with no result.
I also have tested machine with a whole drum unit from an other machine (which machine has made only 15k copies and OEM OPC) , the same no result.

[slimslob]

Re: MP2501

I have tried with an OEM OPC drum (now ihave OEM one in the machine ) with no result.
I also have tested machine with a whole drum unit from an other machine (which machine has made only 15k copies and OEM OPC) , the same no result.

OEM does not mean Genuine Ricoh.

[Gab]

Re: MP2501

OEM does not mean Genuine Ricoh.

I mean the whole drum i tested is the drum machine had when i sold it and it has 15k copies
so it is genuine Ricoh.
Also customer told me that before drum developer and blade change image had only dark lines and after service light image at the top appears.I think he is right but i can't remember for sure. Except drum unit i haven't touched anything else on the machine.

[Elmo]

Re: MP2501

check the optics make sure you havent knocked a mirror out of position

[Polo-022]

Re: MP2501

""Except drum unit i haven't touched anything else on the machine.""

Oh Yes you did Gab...you "touched" Laser Unit!
Why?

[PinevskiS]

Re: MP2501

I replaced drum, developer and blade and executed the proper sp modes.
After the replacement, image at the upper side for about 7cm is light.
I cleaned optics, laser unit , used an other opc drum, checked separation .
Also i checked developer distribution on magnetic roller and looks ok.
I executed sp 2 802 and 2 801 with no result also i noticed when i try to make darker the image
it doesn't has any effect on image. I think to replace developer (again) Any idea?

Clean laser unit (polygon mirror motor)
and you have great copy.

[copier tech]

Re: MP2501

If the fault is happening on prints you can rule out the optics.

You have swapped another drum unit, so you can rule that out.

It can only be the laser or the dust glass did you clean the dust glass?

[PinevskiS]

Re: MP2501

If the fault is happening on prints you can rule out the optics.

You have swapped another drum unit, so you can rule that out.

It can only be the laser or the dust glass did you clean the dust glass?

I have this problem many times ,problem is polygon mirror motor

[Gab]

Re: MP2501

""Except drum unit i haven't touched anything else on the machine.""

Oh Yes you did Gab...you "touched" Laser Unit!
Why?

Because i believed it was the only thing that left The problem happens before itouch laser unit
andremad exavtly the same after.

[Gab]

Re: MP2501

I have this problem many times ,problem is polygon mirror motor

No deference when printing or copying
I have cand laser unit (glasses and polygon mirror motor ) also blow it with air. Noticed no deference.

[PinevskiS]

Re: MP2501

No deference when printing or copying
I have cand laser unit (glasses and polygon mirror motor ) also blow it with air. Noticed no deference.

Can you send scan of counter.

[Gab]

Re: MP2501

Can you send scan of counter.

Also i have swaped a separation roller from an af 2018 i had available with same result.

[Iowatech]

Re: MP2501

First, the caveats -
I am not trained on that model,
I prefer to see an example of at least the print defect, as the different patterns that problems produce make it far easier to troubleshoot.
As such, what follows could be a waste of time, and I apologize in advance.
However, on older versions of the Ricoh 22 to 30 cpm chassis, the drum discharge PCB was on the upper left side of the PCU cavity, and if it was obviously contaminated with toner this sort of print defect would sometimes occur.
I suppose you might also check the drum ground, but as drum ground problems normally affect the entire printed area that is not very likely.