[Misc] MPC4503 Print out dirty dot dot at center

[chin1202]

Hi MPC 4503 Print out have dirty dot dot at center, Pls Help

*already change c m y k drum and heater unit

[8T2]

Re: MPC4503 Print out dirty dot dot at center

What are the print and PM counts? If you already replaced the drum I'm leaning towards the Fuser sleeve or possibly ITB

Sent from my WAS-LX1 using Tapatalk

[chin1202]

Re: MPC4503 Print out dirty dot dot at center

What are the print and PM counts? If you already replaced the drum I'm leaning towards the Fuser sleeve or possibly ITB

Sent from my WAS-LX1 using Tapatalk

already try change heater unit

[copier tech]

Re: MPC4503 Print out dirty dot dot at center

Hi MPC 4503 Print out have dirty dot dot at center, Pls Help

*already change c m y k drum and heater unit

You replaced all PCU were they genuine Ricoh? if not did you replace the charge rollers?

[mga]

Re: MPC4503 Print out dirty dot dot at center

Hi MPC 4503 Print out have dirty dot dot at center, Pls Help

*already change c m y k drum and heater unit

That is a cheap black drum {compatible} seen a lot

[slimslob]

Re: MPC4503 Print out dirty dot dot at center

Could also be the ITB cleaning unit past PM count.

If paper is Short Edge Feed it could be a dirty transport roller.

[8T2]

Re: MPC4503 Print out dirty dot dot at center

already try change heater unit

In that case I think it's the PCU or possibly ITB. Have you tried switching 2 of the PCU's to see if the marks change colour?

Sent from my WAS-LX1 using Tapatalk

[mga]

Re: MPC4503 Print out dirty dot dot at center

In that case I think it's the PCU or possibly ITB. Have you tried switching 2 of the PCU's to see if the marks change colour?

Sent from my WAS-LX1 using Tapatalk

Hi 8t2
If they black spots you can't swap with colour pcu

[8T2]

Re: MPC4503 Print out dirty dot dot at center

Hi 8t2
If they black spots you can't swap with colour pcu

Dammit you're right, forgot the Bk is different on these

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[skinnyb]

Re: MPC4503 Print out dirty dot dot at center

Dammit you're right, forgot the Bk is different on these

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I interchange them all the time. P/N is different but they fit and work fine. I use the 04 series drum in the 03 too. They are cheaper. Dev units are unique though.

Sent from my LM-V405 using Tapatalk

[Pixtech Frameworks]

Re: MPC4503 Print out dirty dot dot at center

It can be caused by the following:
1. Dirty transport roller
2. Paper exit roller
3. Cleaning blade (black developer unit).
Cleaning 1&2 with wet cloth (water)
4. Bad opc drum

[Mark Bbb]

Re: MPC4503 Print out dirty dot dot at center

Please,
mention counters of
pcu (unit or parts?), developer(box), F.U., paper transfer, ITB (cleaner).
Do you use original Ricoh parts?
Do you rebuild the pcu yourself?
So many questions, so little info !!!

[Gab]

Re: MPC4503 Print out dirty dot dot at center

Are =these dots when copying?
Do some repeated A3 copies . Are those dots repeated at regular spaces (as it looks like ) ? If yes the problem is at drum or developer roller or charge or upper fuser. To find which item you mesure the distance of the dots and compare this with the around of the cylider (drum or charge or.....)

[luca72]

Re: MPC4503 Print out dirty dot dot at center

Hi MPC 4503 Print out have dirty dot dot at center, Pls Help

*already change c m y k drum and heater unit

unfortunately despite having enlarged the photos, it is not seen very well, it does not look like the development groups (spots too large), to me it looks like the sleeve film cremated, in fact if you look at the black pattern the dots are almost white, as if the toner peeled off the sheet to stick to the film, you do some "output check" of the fuser without opening the toner bottle door?

[fshead]

Re: MPC4503 Print out dirty dot dot at center

stop the printout b4 it goes thru fuser and inspect......