Ricoh 1045 - Charge Roller Dirty Lines

[Llama God]

Happy Saturday,

I'm having trouble with a 1045 with deposits of toner building up on the charge roller. The drum, blade, dev, charge roller, transfer belt and blade are all new, the recycling pit of despair is clear and the machine is pretty much clean, however still the damned thing keeps coming back.

The dev bias, vRef etc are all fine, which leaves me scratching my head somewhat. Any ideas what could be causing this?

Cheers,

Chris

[TonerMunkeh]

Morning asswipe,

You never said if you replaced the charge roller brush. When you take the charge roller out of the bushings, are they clean too? It might be an idea to completely strip down the PCU and blast it out with a tin of compressed air or similar, then you might be able to trace if the bushings getting dirty are secondary evidence of this fault. If so, new PCU and possibly HV board time.

[bonnie750]

Hello Chris, must be a real problem if you're thinking about work on a Saturday!!!
Are you sure its toner and not dev? Incorrect charge roller value can cause dev to be pulled onto the ch. roller -1630v i think
Where is the toner build-up on the charge roller and has the cleaning roller been installed correctly/possibly left out? If its at the ends I wonder if the toner still on the drum ends and the drum is not being quenched. Any toner still eddying around in the pcu would be attracted back to the drum and then offset onto the charge roller. What's the copy quality like.
After changing the charge roller has the value been set back to default?

Bill

[aabarnes1]

I agrre with toner munkeh on the cleaning brush thing, I've made that mistake before and got the 'dalmation' effect on the coies after a couple of k

[Llama God]

It's definitely toner, on the toner chute end of the PCU, and it's banding around the charge roller and thus the drum too. In answer to the question of the cleaning roller, I can honestly say that it hasn't been changed but it was lovely and clean - I'll go with this for starters.

I like the not quenching idea though, that's nice and unusual, and the banding does appear in the same place each time it comes back. I'm fairly certain that the charge roller voltage is at default, but I'll double-check that too.

Regarding it being Saturday, I seem to be incapable of putting work into its own little box during weekends, unless I'm out on the lash of course! I really am that pitiful...

Thanks for your input everybody!

[totoro]

Check and make sure that you have a good drum ground. I've had a few of these that did that and the drum ground was intermittent.

[Llama God]

The customer started getting uppity about this so I chucked a new drum, blade, charge roller and cleaning roller into it and, so far, job's a good'un. They'd all done under 4k though, but it's only someone else's money and the customer's a happy bunny.