Ricoh MPC 3000 image Quality Problem

[Codex]

@elmo: yes i tried 100g..120g paper, and the problem remains

@ewizzi:i'll check the side door and the piece of plastic you mentioned...

@mikadonovan: i changed both... Still same problem

@ghostinthemachine: maybe its really a ghost in that machine.... The problem is exact the same on every sheet.... Same position, and it doesn't repeat at A3 paper... Same position....

[Debs1964]

I know you said in your original post that it occurs on prints/copies, but could you confirm that it definitely does it on prints please, most things, other than optics, would move the position, or repeat along the page

[slimslob]

There was a similar problem in the early days of the Royal Bond Copier 1. It was referred as a banana void due to its shape, and like this it was the same place on every copy. It was caused by a bubble of air getting between the paper and the master.

[Codex]

@debs1964: yes it occurs on prints and on copies

[Codex]

@slimslob: interesting idea.... Maybe a bubble. Of air. Between the transfer belt and the transfer roller....

[phil crozier]

Looks like the smiley face issue you sometimes get with poor paper stock. Try increasing and decreasing the fuser speed for LEF.
You also seem to have a faint band down the centre, have a look at the white bias wires inside the transfer unit, they can become detached from the connectors and cause weird problems because of the electrical noise.

[Codex]

I tried another Transfer belt unit from a working machine.... Still the same problem

[Gift]

seems like DV unit and/or dv clutch issue to me

edit: ok, that's probably unlikely if this occure with every colour. But that diagonal lighter lines within the image (as you can see in the sample scan) is usually related to dev/drive issues.