Ricoh Aficio 1035 PCU Unit

[tcypy1961]

Can a PCU Unit (Loss of ground between the unit and the copier) from a Ricoh Aficio 1035 cause an SC350 error code? Any help appreciated. Thank you.

[Iowatech]

Re: Ricoh Aficio 1035 PCU Unit

What else have you checked?
It would be stupid for me to send you off looking for wrong things, so I need more information.
Thanks.

[tcypy1961]

Re: Ricoh Aficio 1035 PCU Unit

What else have you checked?
It would be stupid for me to send you off looking for wrong things, so I need more information.
Thanks.

I replaced the id sensor because of overtoning; was going to replace the dev. unit but when replacing the id sensor noticed that it was unplugged9the one I replacing was a new one I installed last visit. I had switched toner supply to pixel. After replacing the id sensor I switched toner supply back to sensor. Before leaving I checked the drum and noticed it was black with toner which I've seen on this model and others just not sure what causes this leading eventually to a SC-350.
Thanks!!!

[sandmanmac]

Re: Ricoh Aficio 1035 PCU Unit

I used to have a real knack for not getting the PCR installed properly in these PCU's, so that it didn't contact the drum entirely. Black copies and SC's were the result.
Beyond that, I think you're looking at an HVU, or BICU, and that's just plain nonsense on a 14 year old box.

[Gift]

Re: Ricoh Aficio 1035 PCU Unit

Bad grumd of the drum shaft is not uncommon - back then we used some modifications like sort of copper-spring plates touching the rear end of the drum shaft. I also recall I wicked quick and dirty improvisation I did with a paper clip LOL

I also wouldn't recommend start ordering expensive stuff for this machine even if I like it more than the current engine^^

[Tonerbomb]

Re: Ricoh Aficio 1035 PCU Unit

maybe a hard drum. Did I hear someone playing Taps????????

[Bantams]

Re: Ricoh Aficio 1035 PCU Unit

Ive had the Brass screw holes break on the dev unit where it connects to the drum part of the PCU cause sc350 and blk copies before.

[Gary Bowen]

Re: Ricoh Aficio 1035 PCU Unit

I believe the SC350 can also be caused by the Timing Pulley (AB030574) that is on Drum Shaft slipping. It is "D" shaped and can cause problems when it wears and you have a very old machine. When this pulley goes you also get partial images, black bands, shrunk images in your copies. Take the Flywheels off and take a close look at this pulley.

[mikadonovan]

Re: Ricoh Aficio 1035 PCU Unit

Bad grumd of the drum shaft is not uncommon - back then we used some modifications like sort of copper-spring plates touching the rear end of the drum shaft.

The B064 ground strap worked pretty good on the B003.

I believe the SC350 can also be caused by the Timing Pulley (AB030574) that is on Drum Shaft slipping. It is "D" shaped and can cause problems when it wears and you have a very old machine. When this pulley goes you also get partial images, black bands, shrunk images in your copies. Take the Flywheels off and take a close look at this pulley.

It has an allen set screw that loosens up.

[slimslob]

Re: Ricoh Aficio 1035 PCU Unit

Bad grumd of the drum shaft is not uncommon - back then we used some modifications like sort of copper-spring plates touching the rear end of the drum shaft. I also recall I wicked quick and dirty improvisation I did with a paper clip LOL

I also wouldn't recommend start ordering expensive stuff for this machine even if I like it more than the current engine^^

The drum shaft housing uses what is supposed to be a conductive ball bearing for the drum shaft. With age, it loses its conductivity. Test from the drum shaft to the outer race of the bearing. It should be less than 1 ohms.

I have also encountered machines where the ground contact for the doctor blade is missing from the back of the development unit. This will cause dirty background.

[Iowatech]

Re: Ricoh Aficio 1035 PCU Unit

I was curious what that error code actually was for, so I looked up today while at lunch. Turns out SC350 is a bad ID sensor pattern. While SC350 can be caused by a bad drum ground, based on the latest information I'd guess something along the lines of contaminated charge roller would be far more likely in this case (toner should only be attracted to parts of the drum that have less charge after all, and a faulty drum ground prevents that). I suppose that there is a chance that the developer bias could be turned up to a ridiculous value or the developer material could be way overtonered, but as the charge roller cleaning pad on these machines tend to disintegrate over time I'd say the charge roller and it's associated systems should be considered the most likely suspects.

[slimslob]

Re: Ricoh Aficio 1035 PCU Unit

I was curious what that error code actually was for, so I looked up today while at lunch. Turns out SC350 is a bad ID sensor pattern. While SC350 can be caused by a bad drum ground, based on the latest information I'd guess something along the lines of contaminated charge roller would be far more likely in this case (toner should only be attracted to parts of the drum that have less charge after all, and a faulty drum ground prevents that). I suppose that there is a chance that the developer bias could be turned up to a ridiculous value or the developer material could be way overtonered, but as the charge roller cleaning pad on these machines tend to disintegrate over time I'd say the charge roller and it's associated systems should be considered the most likely suspects.

A faulty drum ground can actually cause the drum not to take a charge at all. Simply put, no ground, no completed path for the charge current. No completed path for the charge current, no charge current, no charge.

[Tonerbomb]

Re: Ricoh Aficio 1035 PCU Unit

what are the vsg and vsp readings?? Have you done the "Patch check on this machine??" Open the duplexer and the RH door, Cheat(err Bypassthe door safty switches) to see if the machine actually develops a good patch??????