Canon support says this is an Apple issue, Apple Care 3+ yrs old.

I too am trying to get both the scanner and the printer to work between my Macbook Pro and my new MG7520. I'm having problems figuring out how to connect my laptop to the PIXMA via USB!! What do the ends of this USB cable look like? I do not have a cable with an end that plugs into the PIXMA. Can you help me understand what this cable is supposed to look like?

Thanks!

What does the USB cable look like for connecting my laptop to the PIXMA? Gah, I'm stuck on step 1!

It depends on your printer, the usual type A should fit into your USB port and it depends on the printer as to which USB type will fit there - they usually do come with a USB cable. Here are some pics:

https://www.google.com/search?q=usb+cable&tbm=isch&imgil=ggHtf0NfIZIMsM%253A%253 By1OnyCGI3IGQkM%253Bhttp%25253A%25252F%25252Fwww.publicdomainpictures.net%25252F view-image.php%25253Fimage%2525253D637&source=iu&pf=m&fir=ggHtf0NfIZIMsM%253A%25 2Cy1OnyCGI3IGQkM%252C_&usg=__tLQ2k12PEcHfXENtyEu2WhxaTsQ%3D&biw=1031&bih=492&ved =0CIEBEMo3&ei=cW92VYLbHMjRoATOgIHwCA#tbm=isch&q=usb+cable+types&imgrc=wLMpBD-zUZ yGmM%253A%3Bhcm3JXgI3q2VSM%3Bhttp%253A%252F%252Fstatic1.squarespace.com%252Fstat ic%252F5143771ae4b04eaef3677f95%252Ft%252F533c2346e4b063541a2812a2%252F139645011 9612%252F%3Bhttp%253A%252F%252Fmalcontentcomics.com%252Fsystemsboy%252F2014%252F 4%252F2%252Fnot-my-frustrations%3B488%3B399

I'm suddenly having the same problem. Wifi worked fine for a month, and now suddenly I can't print via Wifi (and my iOS devices don't see it either).

Printing via USB works fine.

Thanks very much for the reminder!! I too struggled with the installation of the software after purchasing an additional MacBook Pro for the household after over a year of very successful use of the Cannon MG7120. This thread reminded me that the installation process required a direct USB connection to properly setup all the Canon software that provides the full features that still work on our original MacBook Pro (MBP -- circa 2010).

We upgraded the old MBP to El Capitan and all functions still worked great!! Printing / Scanning to/from the MBP. All over WiFi using the Canon "Serial" network protocol vs. the Bonjour protocol. I noticed that on the "new" MBP (circa late 2015), that the printer came up by default as an AirPrint printer. Like all other threads / discussions I've seen, it would show OK -- even accurately report Ink levels, but absolutely no luck in using it as a printer!!

Like you experienced, I had to reload download the full set of software from either Canon or the "printdriverseries.com" (see link from your thread), and this failed to load at all (without USB connection). After reading your thread, I recalled that all-in-one printers generally hate being setup over the network but much prefer a USB connection for 1st installation. This is also true of this Canon printer.

I grabbed a compatible USB cable (I'm not sure where the original one that came with the printer went -- but I had a compatible one available). After a couple of tries without an installation procedure manual that originally came with the unit, I was able to get everything working. I generally followed the same process you outlined. I had so many prior failed attempts, I fairly certain there is a more straightforward way to do this as there was plenty of extraneous software left on my new MBP. However I was able to get all bi-directional functionality working to my satisfaction. This included a successful test of asynchronous scanning of documents/photos directly from the scanner to either of the Macs on the network.

1. Took the MBP off wireless and ran the installation procedure when connected via USB.
   • Configured printer for network connection -- (I didn't need to redo this process, nor even shut the printer down!)
   • Ran through the full installation cycle with the software obtained from http://printerdriverseries.com/
2. Installed the latest components from Canon available at their download site for the latest version of "El Capitan":
   Here: https://www.usa.canon.com/internet/portal/us/home/support/details/printers/inkje t-multifunction/mg-series-inkjet/mg7120/
   I'm sorry to report that I'm not at all sure of the best order to perform this in as I had tried so many time without the USB connection that there very well could have be a more straightforward sequence to the steps.
   • ICA Driver Ver. 4.1.0 (OS X) (from Recommended Downloads tab)
   • IJ Scan Utility Ver. 2.1.6 (OS X) (from Recommended Downloads tab)
   • MG7100 series CUPS Printer Driver Ver. 11.7.1.0 (OS X) (from Recommended Downloads tab)
   • Canon IJ Network Tool v. 4.6.1 (from Software section)
   • Quick Menu Ver. 2.6.1 (from Software section)
     All of the above are from the usa.canon.com site.
3. Follow-up use of the Canon IJ Network Tool was performed to ensure additional printers were configured on my MBP (for USB and Bonjour protocol). This last step was just to be sure the tool could be reused and I had a reliable means to re-install as needed.

Now that everything is up and running, I'm not sure there was a need to run the download from the printerdriverseries.com site. Instead I think it may be possible to simply run the Canon IJ Network Tool v 4.6.1 1st with the USB cable connected. This would be absolutely critical. For me, this allow the setup of the printer with the "Canon MG Series" printer using the "Canon IJ Network" protocol. Using this configured printer / scanner, all functionality worked for me on the MBP.

IMPORTANT: This uses a different network path than "AirPrint"!! Over AirPrint, the printer queuing mechanism consistently failed to start. I'm unsure why but using the Canon IJ Network layer allowed all functionality -- and this is the method used for the old MBP -- now both Macs are working fine -- including the Canon Quick Menu app.

Thank you so much for posting your thread. It was a great help in my own investigation.

Thanx so much.

Try using Image Capture to scan.