MG5420 on the network, but PCs all of a sudden can't see it/connect to it

[neruda]

MG5420 has been on the home network and working fine for weeks. All of a sudden, cannot print wirelessly. Here are the facts as they stand:

- Nothing has changed on the network from when everything was working fine. 

- WLAN is enabled, active,  at 80% signal strength

- The printer shows up in my router Client list. My MAC filter is usually disabled, but when I enable it and view the list, I can see it there. 

- there is no other security I am aware of, as noted, it was working fine and nothing has changed. 

- All 3 PCs (all Win7) hooked up to it have the exact same inability to connect - so I do not think it is a driver issue 

- I have disabled the LAN DRX setting, to no avail. 

- I *can* print when I hook up via USB, another sign that the drivers are fine. 

So, PCs are on the network, and have the drivers installed. Printer is on the same network, permissioned appropriately. 

When I try to get the printer status, I get "printer not responding"... and in the IJ Network tool I get "there are ports that cannot be used with their current settings" - but there is only the one port in use, which of course I cannot access to change. 

Port CNBJNP_180CACCD0C00.... which aligns to the default printer name of CD0C00000000.

What is my next step here?

[Patrick]

Hi neruda,

Reinstalling your PIXMA MG5420 will resolve this issue.  To perform the uninstall, please have the PIXMA MG5420's CDROM in the CDROM drive and then follow these steps:

 1.  Click on Start and then Run.  If Run is not in your Start menu, please follow these steps to add it:

     1-1.  Click Start.

     1-2.  Right click the Start menu and left click on Properties.

     1-3.  Click on the Customize button next to 'Start Menu'.

     1-4.  In the Customize Start Menu window, place a checkmark next to 'Run Command'.

     1-5.  Click OK in the Customize Start Menu window.

     1-6.  Click OK in the Properties window.

 2.  Click Browse.  In the Browse window, click on "Computer".

 3.  Double click the CANON_IJ CDROM.

 4.  Double click the folder named WIN.

 5.  Double click the folder named Driver.

 6   Double click the folder named DrvSetup.

 7.  Double click the file named DELDRV.  If you are using the 64 bit version of Windows 7, please double click DELDRV64.  In the Run box click OK.  

 8.  Click Execute to start uninstall and Yes to completely uninstall the drivers.

 9.  Once finished, click on Start and then Run.

10.  Click Browse.  In the Browse window, click on "Computer".

11.  Double click the CANON_IJ CDROM.

12.  Double click the folder named WIN.

13.  Double click the folder named Driver.

14.  Double click the folder named LAN.

15.  Double click the file named CNMNPU.exe

16.  In the Run box click OK and then Yes on the Delete BJNP Port window.

17.  The uninstaller will prompt you to restart the computer, please click Yes to restart the computer.

While the computer restarts, please take out and then reinsert the CDROM that came with the PIXMA MG5420.  The setup program will start automatically.  If the Autoplay screen appears, click Run and then Continue.

 1.  Choose Wireless Connection from the Connection Method Screen.

 2.  Continue to follow prompts until the Setup Procedure Selection screen appears.

 3.  On your PIXMA MG5420, choose Standard Setup.

 4.  On your computer, choose Standard Setup on the Setup Procedure Selection screen.

 5.  Choose Confirm the access point name and follow the prompts to complete the setup.

Follow the prompts to reinstall your PIXMA MG5420.