We have multiple machines, high & low speed 4 series that we seeing a number of fuser jams J4201, J4211, J4213, J4214. Doesn't seem to be a lead edge void or paper moisture issue. They're pretty low meter with updated firmware. One of them has had a new fuser and exit section per the hotline. Curious if anyone has seen any of these and a potential fix. The only thing that might make sense is adjusting fuser speed ?
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So, is the paper making its way out of the fuser without catching an edge, dog earring etc? Have you adjusted U34 Start position at all? Typically at run up we will need to set all the cassette and speed/size settings here to +0.6 or more to ensure lead edge and trail edge on an edge to edge print are the same. This is the most important adjustment you will make on a Kyocera! Use your own test chart and do not rely on the test print option for checking. I made a pdf that has a 1.5cm border right to the edge and print this from the usb key.
The only other thing I’ve seen on one client was A3 skewing and jamming and this required an increase in code U51 to create a better loop at the alignment roller.You do not have permission to view this gallery.
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We have seen quite a number of problems with the fuser drive assembly. Mostly with the fuser release motor failing to work but also in driving the fuser and or the exit unit. When it comes to the two latter issues it has almost always been a matter of fitment. The gear that sticks out furthest on the drive unit has metal nubin that needs to fit into a pilot hole in order for the gears to mesh and drive the exit unit properly. Many times I have discovered it is not in the pilot hole. It has been next to it and working intermittently but flakey. I have seen the plastic broken away from where the the pilot hole is because the drive assembly was not installed properly and the plastic could not withstand the pressure.
FWIW I hope this helps.Comment
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J42** are common for us as well.. and on 53's, especially in schools or estate agents that do full coverage prints.
U034 is adjusted to +2.0 quite often, customers seem to prefer non jamming machines rather than centralised prints..Comment
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This sounds like what we are experiencing. With lead edge/void jams, usually you're getting them out from under the fuser ramp or wrapped around the roller. These jams seem to just stop getting fuser drive. We're going to check a couple of the machaines we've been having issues with. Thanks for the info.
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I wondered that same thing until I witnessed it on a setup. The first time I saw it happen was definitely my own fault. I had a pressure release error the day after a machine was installed at the customers site and I pulled a fuser drive unit from another new machine to fix it. Upon replacing the drive unit back at the shop, it would not pass paper past the exit unit. It took me quite some time to figure out what happened. I am not entirely certain it was assembled correctly when I unboxed it, but I know for a fact it was not assembled correctly when I reassembled it. After that when having fuser jamming issues I started checking it by pulling the exit unit and fuser and seeing it the shaft was in the pilot hole. Some times it isn't and I am able to simply pop it in without needing to remove the drive unit. This phenomenon has only been observed on xxx4 series machines by me and my crew. Mostly black and white but some color units as well.Comment
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The 3 that we have jamming, I've checked and all have the fuser drive unit installed correctly. The 4054ci, I replaced the fuser drive since I had a parts unit. I've gone ahead and ordered a low and high speed fuser drive unit. The part has been updated, but it reads that it's for procurement reasons.Comment
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What is the configuration of the machines? Do they have finishers? Have you tried different paper? Damp or humid? Fitted a dehumidifier?Comment
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4054ci has an inner finisher, the other two do not. It doesn't seem to be too humid or damp. All three are in clean office environments with AC on. I wish we could install and use the casette heaters, so we would have an idea if it was paper related. The paper is not curling, as damp paper has a tendancy to do. Most of the paper issues we see are cassette feed related or curling when exiting the machine.Comment
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You could be looking at the wrong end.
It maybe the paper feed units causing the problem.
I have found the part the separation roller is fitted on may have a "lip" on the bit that comes up against the white (the larger one) actuator.
File the lip off and maybe put a bit of oil on the pivots of both the white actuators.
I have found this reduces jamming.
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Knock on wood, all of our 04/54 machines have been bullet proof so far. We hardly touch them.
J420x and J421x are the same jams P2040 would get with defective fusers where that pad shrinks. Bad batch of fusers?
Have you tried adjusting the gap on that metal ramp? If i recall there are 2 sets of screw holes. One for a fixed position and another for adjustment.Evil will always triumph because good is dumb.Comment
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