You can download (free) the Service Manual for the C900/C1900 here; http://tinyurl.com/2dxyzrr It contains comprehensive dis-assembly, re-assembly and service instructions including parts lists and wiring diagrammes. The download is in six zipped parts. After downloading all of them unzip part 1 and it will rebuild the complete file as a pdf document.
This printer uses the same print engine as the Minolta QMS/Konica Minolta Magicolor 2300/2350 printers. KM versions of the manual are also available from the above site. Much of the content is virtually identical but the instructions are not quite as comprehensive or as detailed as the Epson version. KM MC2300/2350 users may want to download both versions.
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Re: papr jam in fuser unit C900
Before changing out the fuser, check very closely for bits of paper or other debris that may be obstructing the small sensor flag from free movement. Also, it may just be stuck. If this is the case, just free it up and try printing again.
If you do need to replace the fuser, there aren't many sources for a free service manual for this model. However, if you are handy do not despair. First, be sure the printer is unplugged and cooled down.
The fuser is located just below the paper output assembly. You'll need to remove the rear panel (and possibly other panels) to get to the fuser. Once there, unplug and make note of where the wires go. Remove any screws or fasteners and pull the fuser free from the printer chassis.
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Fuser is worn, even if % says still has life, but if less than 40% say, then fuser could be slipping.
next with the lid up and fuser removed, look to the left of where the fuser sits in the centre between the exit rollers, there is a little black lever pointing up about 1/4 inch. if it's not there, it's broken off, usually from pulling back a papr jam in the wrong direction (enmvelopes can snag on tghis if pulled back in opposite direction of feed...if you can find the broken bit, it can be superglued back in place very carefully, esle yu need to get a a techie in to replace.
We just solved this problem with our c900.
Basically, a paper jam has caused some probs with the sensors and rollers. After playing with the thing for about 4 hours, i ran some really thick photo paper through it and after a couple of trys where it just screwed up in the back, it then fed through and printed correctly. After that it was fine with all paper types, no more messages, and no more paper getting screwed up in the back. Ian
okay, I have this problem I think. It is jamming on the OUTPUT side of the fuser, and I have replaced the fuser with a new one.
I learned tonight, through trying various things, that it will not jam with the printer lid open. (you can make it "print" with the lid open if you push the lid switch in so that the printer thinks it is closed. That made me wonder if it had anything to do with the led strips (black bars attached to the lid) so just for fun I unplugged the C led strip so that it wouldn't produce any light onto the drum. With the lid closed and the C disconnected, the printer will not jam. (but you get no blue on the page of course!) when I re-connect the C led strip, it jams on the output side of the fuser every time. It is very consistent.
I don't understand how putting blue toner on a paper can make it curl so much that it jams up in the fuser, but it does.
I'm sure there is something else gong on here that I don't fully understand- hopefully someone who knows more than I do can use this info to help us all out a little.
I'm going to go and fiddle with the drums now. I don't have an extra one right now, but I'll see if I can narrow it down further.
I got the same message on my Brother HL-4040CN color laser. As it turns
out, there was a mega jam inside the printer. It was like 10+ pages,
half of them crumpled up and one page was getting charred by the fuser.
Once I found the jam (there was no jam indicated on the control panel),
the printer worked fine.
The fuser unit has a pape sensor. If, for some reason, the sensor is stuck, the printer will read a paper jam. Open the rear door and inspect the paper sensor located in the fuser assembly. See if it came out of it's original position or if there is something blocking it from moving freely.
This is a known issue on certain AcuLaser C4100 for which Epson have released a countermeasure. The problem is related to a value in the printer firmware and only realy affects the machine when it is first switched on or has sat idle for a long time whilst powered on.
The fix requires a software tool to interogate the firmware and check a value. If this value is set to a certain figure it requires changing. The same software can change the value to rectify the issue.
You can get the info to fix the printer from: