Question about Canon PIXMA MX310 All-In-One Printer
When faxing halfway paper jam showing doc in ADF on the screen
I have just had the same problem on one of these Canon MF4150 machines.
The manufactures warranty on our machine had expired just one week before this happened so I had to fix this myself.
The problem we had (which is very likely to be the same cause as yours) is when we removed some torn jammed paper, it had somehow pulled off a spring from inside the machine. The spring was linked to the paper jam sensor.
It does involve a LOT of work to fix it, and unless you are very 'techy' it may be quite a difficult task to do this for the 'average' person.
I had to completely disassemble the machine: Take off the front first (lift up the cover and there is 2 screws at the front and 2 clips on the bottom of the machine) Then remove the 2sides and finally the top (screws should be easy to see, to get the sides off, un-clip along the front edges and gently move them outwards and slide them backwards to release the clips on the back) being careful with the wires going to the scanner part). Then look for the fuser unit which is near the top at the back, there is a black rounded cover over the fuser. To remove the cover, look for 2 small clips one at each side and unclip the cover and gently lift upwards. Under the cover on the left side you will see a small plastic rod which goes from the left side to a small tab in the middle, if you look about half way along that rod you should see a tiny spring, make sure this is clipped on properly and that you are able to rotate the rod and it should spring back to the proper position when you let go.
Once this is done, put it all back together again and it should work fine.
I'm sure a lot of other people probably have this same problem too so I hope this helps someone.
Posted on Sep 09, 2008
SOURCE: Canon D880 Printer/Fax
1. Take off 3 plastic covers one above exit area-slide top to left to access screw
remove lower exit cover and side cover -unsnaps with 2 pins and there is one more cover I think over the fan that needs to come off.
2.Locate black plastic sheet covering a circuit board carefully pull this back-disconnect 3 plastic connectors that lead from the heater to the circuit board
3. using a offset phillips #2 screwdriver remove 3 screws that hold the fuser to the frame. carefully lift fuser up and out toward the exit area.
4. pop off black cover remove 2 screws from top of fuser, disengage cover lid locks with a small screwdriver, lift upper fuser heater-be careful NOT to damage
plastic heater membrane. remove paper jam and reassemble.
Posted on Nov 21, 2008
SOURCE: HP 7680 paper jam
I spent 21/2 hours with the HP tech support - with their recomendation to upgrade my 14 month old computer to the bigger model because the screen reads "paper jam". I have had this printer replaced once already, 1 week after I received it for a defective doc feeder. I decided to take things into my own hands - First of all, no paper was ever located in the paper jam area. Several soft resets by shutting down for 20+ seconds, then pressing #6 at start up resulted in any improvement - the screen continued to read "paper Jam....." the HP tech was unable to offer any practical suggestions.
I turned the machine upside down after removing the document feeder and examined the rollers at the back of the rear tray where the paper jam was supposed to be. I noticed that there was some black residue on the gears and although the machine was off and unplugged - the rollers / gears would not roll freely and seemed to get stuck. I cleaned them thoroughly with an old but clean toothbrush and water. (don't grease the gears - I've heard it eats the plastic) - until the rollers would freely roll when I moved the gray rubber rollers.
Returned the machine to correct position - and turned it on - "paper jam" message returned but the machine was sounding different than it had - so I did another soft reset (unplug from wall and printer for 20 seconds, then holding #6 for a few seconds while plugging back in and now I can print. The printer went through its maintenance cycle and did a realignment. I can print and everything is working fine at this time.
I hope that this will help someone. I couldn't find any information on how to repair the printer and HP seems to be all about producing junk and convincing you to "upgrade" at a cost of $2-300. When this one does finally go - I won't be buying an HP!
The 7680 jams a lot and the document feeder has a lot to be desired. It has trouble feeding straight and if there is a jam anywhere in the machine - it is always difficult removing the paper without tearing it and creating more problems and waste of time.
Posted on Apr 10, 2009
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.
Posted on Jul 02, 2009
Open the cover so you can see the glass plates. Look up into the cover where the document exits from. There is a white flat bar with two small white tabs hanging down. Look at the tab that nearest to the front of the machine. In the slot to the left of it there should be a small black plastic arm hanging down. it is probably stuck in the up position. use a paper clip to bring it down and see if it is free to swing. DONT spray anything near it if it is stuck. Use tweezers to pull it down and it should click back into position and swing freely.
Posted on May 31, 2011
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