
Click “+” sign to expand Universal Serial Bus Controllers”.Under Device and Printers, click “Device Manager”.If the printer does not print even after you’ve set the right port, you will be required to uninstall printer drivers and install again. (The printer name is displayed as CNBJNP_xxxxxxxxxx where xxxx is a number) You should see a check mark in the box besides USBnnn and your printer name in the Printer field in the list.In the list of ports look for the port named USBnnn (where n is a number).The Canon Pixma MX340 properties dialog box opens Under Printer and Faxes, right-click Canon Pixma MX340.Click Devices and Printers in Start Menu.You should see a checkmark near “Canon Pixma MX340” which signifies the computer has set the multi-function device as your default printer.Right-click Canon Pixma MX340 and select “Set as Default printer” You should see Canon Pixma MX340 listed in the Printer and Faxes device list.


Sound familiar? Then the following guide will help, it outlines effective solutions to common printing issues. You have an urgent print job lined up, but the Canon MX340 goes dead the moment you issue the print command.
