When I copy it leaves "tire tracks" the length of the page only on the back side of the copier! It sounds like the fiber optics are dirty from the test I ran checking whether it was the fuser or fiber optics. Can you explain how I clean the fiber optics and where they are specifically as there is no repair person in my area at all! Thank You, email@example.com
My Canon 940 copier leaves a 1/2 soft black track on each copied page. I removed the cartridge, opened it up observing a smudge on the red bar approx the same place that is on my copies. How do I clean this? THanks.
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Re: Canon PC-940 Copier
There are no fiber optics in the copier. It has 6 mirrors that send the image to the drum unit. Did you try to clean the copyboard glass? Also, do the marks move up and down the page? Also, have you replaced the drum cartridge recently? Pull the drum unit out can you see track marks on the drum it self. If not I would have to say it may be comming from the fixing ass'y, the hot part of the copier. Try to use a dry rag and wipe up any loose toner in the paper path then try to run some blank pages in the copier this may clear up the problem...
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Could be optics needing to be cleaned. First I would rule out the toner cartridge. If you have a spare swap it out or remove your current cartridge, turn it over and slide open the "gate" that covers the drum cyclinder. The drum should be clean all the way across it's surface. If you see toner on each end then that is where your dark sides are coming from. If the drum is clean then most likely you have dust building up on the optics mirrors. One test for this is to manually lighten the exposure control on the operation panel and then recheck your copy quality. This may cause the rest of the copy to be light but if the dark sides goes away then your optics are dirty.
Good Luck and Thank You for using Fixya.
Why would a fuse have any thing to do with a clicking sound? If the fuser or fixing unit was having a problem you would get a error code. Have you replaced the toner or drum cartridge any time? If so, was the noise there before? If it was not recheck the installation and if you put the old parts back in and you have no noise, it has to be the new cartridge.... Good Luck
the nealy black copies sounds like the drum is going, try adjusting the exposure to light, if it comes out with the whole page the same way but just lighter than change drum. White line sounds like there is something on the coronas.
Either the Fuser/Heating unit is bad, or the optics are dirty.
What you can try to do to narrow it down, is to make a copy but.. STOP the machine in mid process by turning the power off. This will create a paper jam in the machine. If timed properly, your copy should be 1/2 way through the machine with some image on it. (Make sure that you are trying to copy something on the glass). The copy is not FUSED, so the toner will wipe off so be careful not to rub the page against your clothes/sleeve. IF the black line is on the page at this point, the problem is not in the fuser but probably in the fiber optics. If the problem is in the optics and will need to be cleaned. If the black line is NOT on the page at this point, then the fuser unit is bad and needs to be replaced.
Let me know how the copy comes out when you stop the machine in midway and I can see if i can give you any more suggestions. Good luck.