Ricoh mp c6502 magenta marks/line

[apollo]

Hi and thank in advance for any input

Getting like scrap marks on magenta only as per pic.
Drum, Dev , cleaning unit all checked and cleaned
Itb assbly checked.

Swapped the whole drum unit with yellow by removing Dev unit and swapping still same issue

Magenta Dev has nice uniform later Dev on mag roller.
I checked inside copier where pcdu goes nothing obvious
All laser cleaned.

Any one had similar fault, any input would be appreciated

Thanks

[imaginemoko]

its looks like coming from under the development unit.

[apollo]

its looks like coming from under the development unit.

Checked Dev unit
Going to customer again today will look further

[TonerMunkeh]

From the way that's blown out, looks like something is impeding the laser beam. Check the magenta laser aperture for debris.

[apollo]

From the way that's blown out, looks like something is impeding the laser beam. Check the magenta laser aperture for debris.

Was thinking same laser related
will be going in morning

will post updated

thanks

[DougD]

The way the magenta toner is being dragged into the yellow leads me to think the problem is with the magenta image transfer roller not contacting the underside of the belt properly.
If there is crud built up on the roller. the belt wouldn't be smooth right at the point where the image is transferred from the drum.
Wrinkles in the belt would account for the void streaks and the jitter.
This is only my humble opinion since I don't work on this model.

[ESTANISLAOWENENTON]

I do not write or speak very well in englishBut I would say that it is the unit of magenta development, it is deformed or it is dirty in the center.I say so in several occasions I have seen
I do not write or speak very well in englishBut I would say that it is the unit of magenta development, it is deformed or it is dirty in the center.I say so in several occasions I have seen

[slimslob]

I do not write or speak very well in englishBut I would say that it is the unit of magenta development, it is deformed or it is dirty in the center.I say so in several occasions I have seen
I do not write or speak very well in englishBut I would say that it is the unit of magenta development, it is deformed or it is dirty in the center.I say so in several occasions I have seen

You can always type your answers in the language that you are most comfortable and we can use translate.google.com to translate it.

Siempre puede escribir sus respuestas en el idioma que más le convenga y podemos usar translate.google.com para traducirlo.

[apollo]

Hi

Just and update the the fault

The issue was cause by mylar underneath cyan drum unit, causing magenta cq fault.

thanks