Canon MP600 all-in-one printer.Out of paper?

You may have a piece of paper jammed somewhere, open inspection hatches and check

The simplest thing would be to try unplugging the printer from the power source. Let it rest for 5 - 10 minutes then plug back in to the power supply and see if that resolves the problem.

If not you are going to need to do a thorugh inspection to verify that all paper remnants have been removed.

The following is for the MP600:

Issue: ERROR LCD: The paper is jammed. Clear the paper and press [OK].
Solution: Removing paper jams MP600


Removing Obstructions or Jammed Paper If [Paper output slot - The paper is jammed. Clear the paper and press OK] appears on the LCD, follow this procedure to clear the paper jam Clearing paper jams from the auto sheet feeder (ASF) or paper output slot
Clearing paper jams inside the printer
Clearing credit card-sized or 4" x 6" paper jammed inside the printer

ASF / Paper Output Slot

1. Turn off the printer.
   
   
2. Remove paper from the ASF.
   
   
3. Gently pull the jammed paper out.
   
4. 1. If paper is visible from the ASF, use both hands to pull the paper out slowly.
      
   2. If paper is visible from the paper output slot, use both hands to pull the paper out slowly.
      
      
      The above illustration shows a PIXMA MP500.
      
      
5. If the paper tears and a piece of that remains inside the printer, open the scanning unit (printer cover) and remove the paper from inside the printer.
   
   Note:
   Be careful not to touch the components inside the printer.
   
   
   
6. Turn on the printer and confirm that the Alarm light is off.
   (If the jammed paper remains in the printer, the paper may be automatically ejected.)
   
   
7. Load paper back into the ASF.
   
   
8. Press to clear the message and continue printing. If you are printing from an application software, follow the instructions displayed on your computer.
   

Top
Paper jams inside the printer

1. Turn off the printer and disconnect the power cord and USB cable.
   
   
2. Remove the jammed paper slowly using the following procedure.
   
3. 1. Open the rear cover to check if the paper is jammed.
      
      
      
   2. Pull out the cassette and check if the paper is jammed inside the cassette area.
      
      
      
   3. Stand the printer with the left side down, holding the document cover.
      
   4. Press the tabs together and pull the green cover toward you.
      
   5. Check if the paper is jammed.
      (If you were not doing Duplex printing, you do not have to follow this procedure.)
      
      
      
      
   6. Close the green cover and place the printer back to a normal position.
      
4. Reconnect the power cord and power on the printer. Confirm the Alarm light is off.
   
   
5. Load paper back into the ASF or cassette.
   
   
6. Press to clear the message and continue printing. If you are printing from an application software, follow the instructions displayed on your computer.
   

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Clearing credit card-sized paper jammed inside the printer
Credit card-sized and 4" x 6" sized paper must be loaded properly. If this media is not loaded properly, it will feed into the printer and will not exit. Credit card-sized paper should only be loaded in the ASF and in portrait orientation. 4" x 6" sized paper can be loaded in the ASF or cassette. But must be loaded portrait orientation.
If credit card-sized paper was loaded in landscape orientation in the ASF and did not eject (exit), please follow this procedure.

1. Turn off the printer.
   
   
2. Load the same paper type that is jammed inside the printer in portrait orientation.
   
   
   
   
3. Power on the printer.
   The paper stock in the ASF will automatically feed the jammed paper from the printer.
   
   
4. To resume printing, load the paper in portrait orientation.

If 4" x 6" sized paper was loaded in landscape orientation in the cassette and did not eject (exit), please follow this procedure.

1. Turn off the printer.
   
   
2. Open the rear cover.
   
   
3. Fold in four a piece of letter-sized plain paper.
   
   
4. Push in the folded paper until it hits the jammed paper.
   
   
   
   
5. If the jammed paper is visible from inside the printer area, pull it out and proceed to step 7.
   
   
6. If the jammed paper cannot be pulled out, push in the folder paper from the rear so the jammed paper is in between the feed rollers.
   
   
7. Pull out the folded paper and close the rear cover.
   
   
8. Power on the printer and confirm that the Alarm light is off.
   The jammed paper should automatically eject.
   
   
9. To resume printing, load the paper in portrait orientation.

Trust this is helpful.

You can access Canon online support info here. Enter paper jam as a search, then choose #4 to remove the obstruction.
Also see this:
Issue: Paper is jammed inside the printer
Solution: Removing paper jams MP600

Removing Obstructions or Jammed Paper If [Paper output slot - The paper is jammed. Clear the paper and press OK] appears on the LCD, follow this procedure to clear the paper jam Clearing paper jams from the auto sheet feeder (ASF) or paper output slot
Clearing paper jams inside the printer
Clearing credit card-sized or 4" x 6" paper jammed inside the printer

ASF / Paper Output Slot

1. Turn off the printer.
   
   
2. Remove paper from the ASF.
   
   
3. Gently pull the jammed paper out.
   
4. 1. If paper is visible from the ASF, use both hands to pull the paper out slowly.
      
   2. If paper is visible from the paper output slot, use both hands to pull the paper out slowly.
      
      The above illustration shows a PIXMA MP500.
      
      
5. If the paper tears and a piece of that remains inside the printer, open the scanning unit (printer cover) and remove the paper from inside the printer.
   
   Note:
   Be careful not to touch the components inside the printer.
   
   
   
6. Turn on the printer and confirm that the Alarm light is off.
   (If the jammed paper remains in the printer, the paper may be automatically ejected.)
   
   
7. Load paper back into the ASF.
   
   
8. Press <OK> to clear the message and continue printing. If you are printing from an application software, follow the instructions displayed on your computer.
   

Top
Paper jams inside the printer

1. Turn off the printer and disconnect the power cord and USB cable.
   
   
2. Remove the jammed paper slowly using the following procedure.
   
3. 1. Open the rear cover to check if the paper is jammed.
      
      
   2. Pull out the cassette and check if the paper is jammed inside the cassette area.
      
      
   3. Stand the printer with the left side down, holding the document cover.
      
   4. Press the tabs together and pull the green cover toward you.
      
   5. Check if the paper is jammed.
      (If you were not doing Duplex printing, you do not have to follow this procedure.)
      
      
   6. Close the green cover and place the printer back to a normal position.
      
4. Reconnect the power cord and power on the printer. Confirm the Alarm light is off.
   
   
5. Load paper back into the ASF or cassette.
   
   
6. Press <OK> to clear the message and continue printing. If you are printing from an application software, follow the instructions displayed on your computer.
   

Top

Clearing credit card-sized paper jammed inside the printer
Credit card-sized and 4" x 6" sized paper must be loaded properly. If this media is not loaded properly, it will feed into the printer and will not exit. Credit card-sized paper should only be loaded in the ASF and in portrait orientation. 4" x 6" sized paper can be loaded in the ASF or cassette. But must be loaded portrait orientation.
If credit card-sized paper was loaded in landscape orientation in the ASF and did not eject (exit), please follow this procedure.

1. Turn off the printer.
   
   
2. Load the same paper type that is jammed inside the printer in portrait orientation.
   
   
3. Power on the printer.
   The paper stock in the ASF will automatically feed the jammed paper from the printer.
   
   
4. To resume printing, load the paper in portrait orientation.

If 4" x 6" sized paper was loaded in landscape orientation in the cassette and did not eject (exit), please follow this procedure.

1. Turn off the printer.
   
   
2. Open the rear cover.
   
   
3. Fold in four a piece of letter-sized plain paper.
   
   
4. Push in the folded paper until it hits the jammed paper.
   
   
5. If the jammed paper is visible from inside the printer area, pull it out and proceed to step 7.
   
   
6. If the jammed paper cannot be pulled out, push in the folder paper from the rear so the jammed paper is in between the feed rollers.
   
   
7. Pull out the folded paper and close the rear cover.
   
   
8. Power on the printer and confirm that the Alarm light is off.
   The jammed paper should automatically eject.
   
   
9. To resume printing, load the paper in portrait orientation.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks

From the service manual about the paper issue this is what it says:

***Rear tray. There is no paper. Load paper and press [OK].

Confirm that the rear tray is selected as the paper source. Set the paper in the rear tray, and press the OK button.

***Cassette. There is no paper. Load paper and press [OK].

Confirm that the cassette is selected as the paper source. Set the paper in the cassette,
and press the OK button.

Hopefully its just a setting on the printer or the computers printer properties.

Best of luck..

If you cannot see the paper jam, perhaps it is inside the machine:

1) Open the rear cover and inspect the area for any bits of paper that might impede the paper path

2) On the front of the machine, pull out the cassette (paper tray) and inspect the cassette area for any paper jammed inside.

If not paper jam may has some problem with feed rollers on printer.First make sure that option to feed from cassette is turned on.Check this on maintenance mode.Аs the printer is in warranty better don't touch anything else and call Canon.

install again the cd installer of your printer...

there something wrong with the software...

Look carefully because it is a cassette on the bottom of your canon mx850... so the solution is: or you fill that cassette or you switch your canon (it is a button for that) to take the paper from the top...

Hi ...

Most of the time this problem comes when the paper is not loaded correctly. Follow the below instructions to load papers to the cassette and I am sure this will resolve your problem. I will keep monitoring your responce and if required, i'll look for a work arround.

Follow this procedure to load paper / envelope in the cassette:

1. Pull out the cassette from the machine.
   
   
   
   
2. Remove the cover from the cassette.
   
   
3. Fan out the sheets of paper so that they do not stick together.
   
   
4. Align the edges of the paper.
   
   
   
   
5. If the cassette is not yet extended, use your thumb to press the tab (indicated by the pink circular outline) and release the latch.
   
   
6. After the latch is released, remove your thumb from the tab. Then extend the cassette until a click is heard.
   
   
   
   
7. Load paper on the upper-right corner of the cassette with the print side facing down.
   
   Note:
   * Since the Credit Card sized paper, Canon Photo Stickers, and Legal sized paper cannot be fed from the cassette, load them in the auto sheet feeder (ASF).
   * When loading A5 or larger sized paper (nonstandard-size paper: 203mm / 8inches or more in length), extend the cassette by pinching the tab.
   
   
   
8. Grasp the paper guide (A) and align it to the long edge of the envelope stack (2). Align the front edge of the paper stack in the same way (3).
   
   
   
   
9. Close the lid and push the cassette all the way into the printer.
   
   
10. Press the <Open> button and pull out the extension completely.
    
    
11. Press the <Feed Switch> button to turn on the Cassette light.
    
    
    
    *MP500 shown.
    
    Note:
    If the Auto Sheet Feeder lamp lights, press the Feed Switch button to light the Cassette lamp.
    If the Cassette lamp does not light even after pressing the Feed Switch button, Paper Source in the printer driver may be set to the setting other than the Feed Switch button.
    

Loading on envelopes
Paper Type
Precaution
Envelope (DL / #10 )
Set paper with the flap closed.

1. Press down firmly on the edges of the envelopes to make the folds crisp. Also, press firmly on the area that corresponds to the edges of the back flap.
   
   
2. Remove any curling by holding the edges diagonally and bending them gently.
   
   
   
   
3. If the edges of the envelope are inflated or are curling, place the envelope on a flat surface. With a pen, press down while moving it from the center toward the edges of the envelope.
   
   
4. Ensure that no curl or puff exceeds 1/8 in. (3 mm).
   
   
5. Load envelopes in the cassette with the print side facing down and the flap towards the left.
   
   
   
   
6. Close the lid and push the cassette all the way into the printer.
   
   
7. Press the <Open> button and pull out the extension completely.
   
   
8. Press the <Feed Switch> button to turn on the Cassette light.
   
   
   
   Note:
   If the Auto Sheet Feeder lamp lights, press the Feed Switch button to light the Cassette lamp.
   If the Cassette lamp does not light even after pressing the Feed Switch button, Paper Source in the printer driver may be set to the setting other than the Feed Switch button.
   

Don't forget to vote if this helps ... Cheers :)

Bought an Epson printer. Cheaper than a repair