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Trusted Tech
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Aficio MPC - 7500 CHARGE ROLLERS LINES
I am facing horizotal charge rollers lines over colour copy
counter of thr m/c is below 50,000 total copy count.
After cleaning charge rollers it appears again after below
5000 copy. Any advise to reduce charge rollers lines.
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This problem is VERY common, in fact 50k is quite good. I have seen them fails as soon as 17k. There is no cure as I see it (and I see on average 3 of this model per day every day), the MPC 7500 and 6000 are very poor high volume machines with all sorts of ongoing and unresolved issues. All I can tell you is make sure your drum cleaning areas are vacummed out each call and keep an eye on the blades and lube bars. Also you can with a bit of care fit the charge and cleaning rollers out of 3260/5560 charge units to the 7500 housings (I have had to do this from time to time). They are the same actual rollers. You will have to put up with endless jamming in the inverters and loss of density problems for years to come. All of the techs I work with are really starting to get very negative about this model as Ricoh seems to want to just brush these obvious problems under the carpet and pretend all is well.
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Does putting the 3260 ones in there help ?
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The only time I get 50K from my charge rollers is after a dev change...after that its all down hill. I'm getting as few as 15k in many cases. FYI the Pro C series machines are no better. I'm dealing with the exact same problems. The 3260/5560 was by far a superior machine.
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Unfortunately the charge rollers are the same and so there is no difference in the poor life span. The problem seems to be related to the idea of spacing the roller a small distance from the drum, the canons and xerox I have worked on with the foam style contact charge rollers never had these problems.
All I can say is these sort of ongoing faults guarentee my employment for years to come.
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MPC - 7500 Charge rollers lines
Thanks for all response.I will apply all your knowledge as i am new in
MPC-7500. Let i will have to cop up with these problems of charge
rollers and paper jam.
Thanks
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Service Manager
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I don't really think the lube is what's getting on there. I see the same kind of lines on machines that don't have lube bars. I just hope next time they use four coronas and get rid of the charge rollers. I suppose I could try running one without a lube bar and see what happens.
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Service Manager
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I just cleaned one up Monday that was built up pretty thick and certainly could have been lube... and it worked less than 48 hours when it severely undertoned on black and magenta, threw an SC410. Cleaned ID sensors, and got a SC348 as I was trying to force some toner back into the thing. It was after 5:00, customer had left at 4:30, and I was ready to set it on fire, so I get to start back on it in the morning. I'm just thrilled about that.
This is one I'm seriously trying to replace with a Pro C900 (which uses 4 charge wires and can run circles around a whole pile of MPC7500's and Pro C700's) so I don't mind if it acts up a bit, but I still need it to run good enough so the customer doesn't get soured on the tech.
Pity is that this machine would behave itself sooooooooo much better with a charge roller / cleaning roller upgrade, and firmware that actually looked at the toner density once in a while and dumped a little toner in before the pages were almost blank. Not that I expect them to do anything, after all, the MP4000 still pukes developer at less than half PM, and that was a holdover from the MP3500
WAKE UP RICOH - Cannon Konica Minolta Kyocera Mita Panasonic Sharp Toshiba and Xerox all have machines speed /volume range, and you better believe they're not going to sit back and just let Ricoh have the market share, because they certainly haven't earned it.
O.K. I vented - I feel better. It just aggrivates the snot out of me that my customers are getting dumped on like that, Ricoh won't hardly acknowledge there is a problem, but its my fault the customer is unhappy with the performance of the machine.
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