MPC 307 multiple prints come out different calibration

[JayPaul]

Hi all,
I just installed a refurbished 307 that checked over myself all working ok.
Customer printed off 2 copies of the same document, fulirst page comes out bormal but second page is 6mm higher and cuts off the writing. If he prints 5 of it, first page always fine but every page after is 6mm higher again. Same thing happens from both trays, multiple PCs, different applications and software on windows pc. Happens to photocopying as well. Have checked non default data conpared to birth certificate. Pretty much all the same. Changed a couple of settings in SP mode Feed but none make a difference. Seems to be a timing issue on anything after first page. Latest firmware installed.
machine was tested, colours calibrated etc as well.
Any ideas?

[Polarbear]

Re: MPC 307 multiple prints come out different calibration

I would check your registration clutch. If it is slipping of no working, the paper timing will be wrong. Also check that paper size is set correctly everywhere on software and machine.

Also what happens if you print a multiple page internal report like the SMC ?

Sent from my SM-N770F using Tapatalk

[JayPaul]

Re: MPC 307 multiple prints come out different calibration

All still set to A4 via machine and drivers.
When I print smc data, first page comes out fine (even duplex) and the rest of the pages come out 6mm off, so it actually cuts off the top or bottom line of text because smc pages writing goes really close to the edges of the page as standard.
So it does it on any form of printing or copying. Always first piece of paper fine, every page after 6mm out

[Polarbear]

Re: MPC 307 multiple prints come out different calibration

All still set to A4 via machine and drivers.
When I print smc data, first page comes out fine (even duplex) and the rest of the pages come out 6mm off, so it actually cuts off the top or bottom line of text because smc pages writing goes really close to the edges of the page as standard.
So it does it on any form of printing or copying. Always first piece of paper fine, every page after 6mm out

That basically confirms that you have a registration clutch issue. as the timing between the pages (after page 1) and the drum is off, because the registration roller is not keeping the subsequent pages in place until the drum is at the right point for the image to start.

Replace your reg clutch and retest. I'm sure you will win this one!

[JayPaul]

[8T2]

Re: MPC 307 multiple prints come out different calibration

+1 on it being the registration clutch. Had to do one last month. Device was fairly new with about 10k total prints.

Wanted to use 305 parts because the 305 gearbox and clutch look the same but it isn't interchangeable with 307. One has straight cut gears and the other helical gears. On closer inspection it looks like there was too much grease applied to gearbox in factory so took a chance and sprayed the clutch with some Automotive brake and clutch cleaner I carry with me to degrease it and it worked.

It's really not a quick job stripping the machine down to get to the clutch and I was swearing at the designers and the idiots that looked at the design and actually approved it all the way.

Found it strange that the device didn't jam at all even when some of prints only started printing about a 1/3 of the way down the page

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[copier tech]

Re: MPC 307 multiple prints come out different calibration

Yes a bit time consuming to get to this clutch have to take a few boards of to access it is covered in the service manual.

Maybe it has become dislodged during transport/delivery.

[JayPaul]

Re: MPC 307 multiple prints come out different calibration

Sounds like changing that is my only choice then. I guess it must be

[copier tech]

Re: MPC 307 multiple prints come out different calibration

Sounds like changing that is my only choice then. I guess it must be

I guess you checked the reg roller turns freely etc if not you could try lubricating /oiling the bushings if its stiff to turn.

Traffic was busy today with the boat show on.

[8T2]

Re: MPC 307 multiple prints come out different calibration

Sounds like changing that is my only choice then. I guess it must be

That would be the one. Had a hard time believing the boss man when he told me what it costs (even more expensive this side of the world). If you don't have one in stock I'm fairly confident you can get away with cleaning the clutch. It's unfortunately one of the stupid clutches that are pressed and still haven't successfully opened one so a spray is the best tool for the job

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[JayPaul]

Re: MPC 307 multiple prints come out different calibration

I just remembered, I do have a 'scrap' 307 in my office that I took the op panel from to fix another machine. So I can use the one from that initially to see if that does fix the problem.
Copier tech, yes as part of my standard setup on this model machine I drip a tiny bit of lube into the ends of that hard rubber roller before the transfer then turn it and wipe away all excess. I actually do that because sometimes they get so stiff they can cause jamming. I am near southampton yes.

[tsbservice]

Re: MPC 307 multiple prints come out different calibration

I don't know Ricoh but found it very strange that failed reg clutch can cause exactly same distance shifts on every page after first. On other hand what else it could be
Maybe clutch is shifting/moving just a bit after initial kick out...

[slimslob]

Re: MPC 307 multiple prints come out different calibration

I don't know Ricoh but found it very strange that failed reg clutch can cause exactly same distance shifts on every page after first. On other hand what else it could be
Maybe clutch is shifting/moving just a bit after initial kick out...

I can if the first page is the first sheet after loading the feed tray. Static can cause the each sheet to pull the next sheet slightly out of the tray.

[BLADE]

Re: MPC 307 multiple prints come out different calibration

feed and reg sensors good ?

[JayPaul]

Re: MPC 307 multiple prints come out different calibration

Ok after spending about 2 hours taking pretty much the entire 'scrap' 307 apart just to get to its reg clutch I decided this is ridiculous, such poor design. I can't be assed to spend another 2 hours taking the real 307 apart, fitting the part then spending god knows how long putting it back together. We only bought this thing 2 weeks ago so I'll either send it back to the guys we got it from or just use this as a scrap machine instead. Seems like everyone in England has suddenly gone back to work the last few days as our calls have tripled this week, software and hardware alike so I don't have the luxury to sort this out like a real engineer.
Today I take the loss, a small sacrifice for the greater good. At least I know if I see this problem again, immediately request to upgrade it... or quit and move to mexico