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Re: Paper Jam error will not reset after removing jammed...
In many cases, you must use compressed air in a can, and blow out the insides of the printer. These printers use photoelectronic eye technology to tell you when there is no paper left, or other supplies are used up. But unless you clear that out by blowing air through and past those sensors, they do not reset. The paper dust continues to block the sensor which makes it report that there is no paper, that there is a paper jam, etc.
Try clearing it out that way.
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The Canon ImageClass MF3240 continues to show "paper jam" error even if someone followed all the possible fix to remove the jam. After clearing the
paper in all access doors (both front and back), the printer still gives the paper jam error.
Also, if you have tried restarting the printer several times to no avail and the red light keeps
blinking, here is the fix to what is most probably been causing the paper jam problem of Canon ImageClass MF3240.
1. Turn off the printer and pull out all plugs and power cord that is attached to your printer.
2. Remove the paper tray at the bottom and let the printer lie at its back so that you can see underneath.
3. Get a flashlight and look closely for the sensor located underneath the printer. The sensor is located in a small
square hole, just above the small black plastic "lever" (looks like a small hockey
paddle) on the left side of the gray rubber roller. Move the lever so that you can freely look closer on the hole.
4. Notice because there could be a tiny paper shred stuck inside and this causes the sensor to detect a paper jam.
5. Get a small tweezer to remove that paper out.
6. Next, let the printer stand normally and return the tray back.
7. Re-plug all cables and start your printer. That's it!
Try checking the paper path, there might be a broken or loose gear in there, a bent wire or stuck debris. If you done this and all seems ok but the error message keeps flashing, try to do a hard reset. That usually clears off error messages. If nothing happens, you might need to call a technician.
Paper jams can be tricky to solve. The paper is usually stuck inside the printer mechanism so even if there is no visible paper jam, you will still get the paper jam error. Try this:
1. Turn off your copier
2. Open all trays and remove any paper stuck there
3. Locate the button to open the printer, open it and remove any paper stuck there also.
4. Repeate the above step for all buttons that you can find to access the inside of the copier
5. Close all doors and put back all trays
6. Turn on your copier
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I suggest opening the right cover to remove paper jammed internally. There is a lengthy document at Canon support for your model: (you need to input your problem into the search box - ie. "ERROR LCD: Paper Jam" and click Search button).