Hi, I am troubleshooting a Bizhub C250 printer. Paper is picked up from the number 1 tray but stops under the row of white rollers on rhs of the printer. Just the leading edge of the paper is visible. I have only a little printer experience. However I have the service manual and can get in to tech rep mode. Any advice or help would be appreciated. Thanks.
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Re: KM Bizhub 250 paper feed issue
what is the jam code you are gettingTip for the day; Treat every problem as your dog would.....If you cant eat it or f*ck it....then p*ss on it & walk away... -
Re: KM Bizhub 250 paper feed issue
A little more information would help, page count? does tray 2 & side manual feed work good? Does paper stop the same exact place every time? Does the display show the correct size paper? And like king posted the jam code would help.
If tray 2 works fine then you either need new tray 1 rollers or the mylar guide is under registration assembly, but this usually happens after the registration was removed and only affects tray 1.Comment
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Re: KM Bizhub 250 paper feed issue
This printer has a page count of about 300,000. I read frequent referrals to error codes and can find a list of hundreds of them in the service manual. However I can't find a description of how to display these codes. I have searched this forum and the manual but haven't located the procedure. So that would help me for a start. The paper stops near the same place each time and regardless of the tray selected. When I open the door to clear the jam, mostly the paper is just 1 cm past the white rollers but sometimes I have to grab it with needle nose pliers to pull it clear. If I look in to the paper path behind the white rollers I can see two feed rollers on top of each other. These have been cleaned but it makes no difference. I hope this information helps to suggest further action or I can post more details about the printer set up if requested.
Thanks.Comment
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Re: KM Bizhub 250 paper feed issue
In tech mode go to counters, jam counters and report what's listed.
Also the last couple trouble codes too, may be helpful.
I'd try copying from the bypass tray and see if it behaves differently.
Fwiw that dinosaur series had clutch issues and the reg roller bushings used to sieze up too, I'd oil them and turn the roller repeatedly to listen up any crud in the bushings.
Clutches I'd look for red dust indicating damage.
I'd spray all the clutches with IPA and test again.
All the clutches that turn in the paper path route.We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: KM Bizhub 250 paper feed issue
The jam counter shows MCBJ System 4237. So 4237 copies between jams but single sided print fails from tray 1 most of the time. Cleaning the tray 1 paper take up rollers doesn't help, paper stops in the vertical transport section as I noted above. The other trays will print single sided. The paper feed is okay from the bypass tray and printing is normal. Do I need to go in to some particular mode to display trouble codes. The manual indicates that codes are displayed on the touch panel but doesn't suggest any preemptive action that's needed to have them display. I have cleaned what I guess are the clutches with IPA. Do theses clutches have a particular name in the service manual? Duplex printing A3 to A4 does not work, the paper stops in the vertical transport section behind the first cover, under the first set of rollers but not reaching the second set. Perhaps there are a couple of different faults here. That's all I can do for now, this is a kinda steep learning curve and very time consuming. Thanks, RobertComment
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Re: KM Bizhub 250 paper feed issue
See Synthohol's post above, "In tech mode go to counters, jam counters and report what's listed".
Also jam history will tell you dates of recent jams.Comment
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Re: KM Bizhub 250 paper feed issue
without the actual jam codes it could be a dozen different things.We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: KM Bizhub 250 paper feed issue
I have been asked to report jam counters so here goes.
MCBJ system 4237
Tray 1 61
Tray 2 6
Tray 3 0
Tray 4 1
Bypass 7
Vertical transport 8
Separator 4
Fusing 2
Duplex entrance 0
Duplex feed 17
LCT feed 0
MDBJ 315
ADF feed 90
ADF transport 20
ADF reverse 3
ADF exit 64
Print 0
Engine 3
VSYNC delay 2
Maybe that provides further clues to the paper feed issues.
Thanks
RobertComment
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Re: KM Bizhub 250 paper feed issue
ok so tray 1 is sus.
probably the one way clutch on the feed assy. the black ones that turn the feed and take-up rollers
clean the bearings and scuff the shaft where the needle bearings ride.We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: KM Bizhub 250 paper feed issue
gotta be a c250 if the jam counters list by section instead of actual jam code.We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: KM Bizhub 250 paper feed issue
Yes, it's an old printer and storage conditions have not been clean. I'll try to clean that clutch in the next day or two when I'm at the office. I guess there will have to be some disassembly to get to it, that's if I am reading the service manual correctly.
The issue with duplex printing is I suppose a second fault.Comment
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