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Canon MX850 keeps saying Error Number : 306 A communication error has occurred. Make sure that the printer is plugged in, powered-on, and properly connected to your computer. Then try printing again. I have done all of the obvious solutions and nothing is working help

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It is possible that your ink cartridge is damaged. Try using an old ink cartridge that worked before and try to print again.Even if the ink cartridge you are using is full of ink, when sensitive electrical components are damaged, it wouldn't work.

You can also try using a different printer to rule out the possibility that your computer is the problem.

Posted on Sep 06, 2008

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Error 306 can't get printer to work with my mac. It was working just fine until I changed the cartridges and now it gives me an error 306


Error 306 is a communication error and should have nothing to do with the cartridge. Check to make sure the printer is plugged in and restart your computer, and try again.

Jul 25, 2011 | Canon PIXMA MP620 All-In-One InkJet...

1 Answer

I have the same Error Number 300 with my Canon MX850 - it is connected by ethernet cable to my wireless router. I can scan documents OK, but when I go to print it says that the printer does not...


Hi Daniel, I just had a quick look and other people here have posted problems regarding error code 300 on the MX850. Take a look here when you get a minute to see if any of the solutions posted help you out at all. It's a long shot as this link is for Apple users but it might point you in a direction you hadn't yet tried. All the best.

Sep 30, 2010 | Canon PIXMA MX850 Multifunction Printer

1 Answer

Error 306


A communication error has occurred. reinstall drivers or change usb cable

Mar 19, 2010 | Canon PIXMA MX310 All-In-One Printer

1 Answer

I turned power off printer in order to stop it printing a long document that I only needed a couple of pages of adn it's now showing error 306 306 A communication error has occurred. Make sure that the...


Hi there
You can try see if this may do it.

Go to Start / Run and type in "services.msc" without quotation marks, then press Enter or click OK.

In the window that opens (Services) look for "Print Spooler" on the right

Right-click "Print Spooler" and select "Properties".

Click on the "Recovery" tab and change all 3 drop-down boxes to "Restart The Service".

Make sure the 2 text boxes underneath say "1" in them.

Click Ok until you are back at the Services window, close it and you're good to go.

Go back into the properties of the "Print Spooler" tab and be sure to click Start to restart the Print Spooler service and it will restart the service immediately.

The Print spooler depends on the Remote Procedure Call (RPC) service. Is this service disabled? Go to services.msc look for RPC. Check state: Automatic

Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

Mar 09, 2010 | Canon MP610 Photo All-In-One Printer

1 Answer

Every time i try to print, the computer doesn't seem to see the printer and it stops the job. error message # 306. very aggravating!


That error message usually means you have a communication error. Make sure that the printer is plugged in, powered-on, and properly connected to your computer. Then try printing again
If that doesn't work, try this:
1. Start Home Applications, go to Utilities, select Utility Printer Setup
2. Hold down the "option" key and click on "More Printers" button
3. From the main menu, select "Advanced"
4. In the next dialog box, under Device: select field "LPD / LPR Host or Printer"
5. In the device of the "URL:" lpd://PCName/PrinterShareName
6. Click the "Add
If that doesn't work either, check your router settings.

Mar 04, 2010 | Canon Pixma MP500 All-In-One InkJet...

1 Answer

Can't print from my Apple Laptop.  Error message reads "306 A communication error has occurred. Make sure that the printer is plugged in, powered-on, and properly connected to your computer. Then try...


frist u should check your printer port is install o r not in your computer . right mouse click on my computer then click onhardwere, then click
port,if not stall there is yello sign. instail it.
2/ if not work.re install softwere driver once a time.

Jun 19, 2009 | Canon PIXMA MP620 All-In-One InkJet...

2 Answers

Canon mx850 series Error Number : 300 The printer does not respond. Make sure that the printer is plugged in, powered-on, and properly connected to your computer.


I had the same problem. I had moved my printer and when I hooked it all back up, there was an annoying clicking sound, the "in use/memory" light was flashing and there was no communication with my pc.

This is a tad embarassing, but if it helps someone, so be it lol. I had plugged everything in without looking.... my usb cable was plugged into the phone jack >.<.

Check all your connections.... then check them again ;)

Nov 08, 2008 | Office Equipment & Supplies

1 Answer

Hi! I'm getting the following message on my computer screen: Error Number : 306 A communication error has occurred. Make sure that the printer is plugged in, powered-on, and properly connected to your...


Do the following:

Try a different usb cable.

Plug the cable into a different USB port.

Try disconnecting printer power cable for ten minutes.

Unplug computer power cord for ten minutes and restart.

Reinstall printer drivers.

If that all did not work, test the printer on a different computer, to find out if it is faulty or not.

Sep 19, 2008 | Canon Office Equipment & Supplies

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