imageCLASS MF656Cdw Computer can't communicate with scanner

[KPed24]

Cannot communicate with any of the scanners. The scanners may not be connected, or may be turned off

I'm normally not so negative, but GOSH I HATE CANON! I just bought a Canon MF656CDW and have had problems with it since day 1. Why did I ever switch to Canon?! If I hadn't spent all this money on this printer and a ton of money on toner cartridges, I'd throw this brand new printer in the garbage! I'd like to demand my money back and GO BACK TO HP PRINTERS! 

I spent almost two hours on the phone with a Canon tech getting everything going fine. That lasted for two days and now I'm having issues! 

Please help me! Don't tell me to reinstall the drivers, restart the computer/printer, yada yada yada! I've done all this with a specialist a few times during my two hour phone conversation last time I called! 

[mreg]

Then I would delete whatever's there and add your printer back using its IP address.  If that works, if you can set the IP for the printer to "static" in the printer web UI and your router.

[russp41]

This may not solve your problem, but may help someone else. I had a similar issue issue using WiFi to connect to the MF656Cdw printer. Printing worked, scanning would start, but then failed with error "Cannot communicate with the scanner." and Code: 155,0,0. After rebooting my Windows 10 laptop and printer, and investigating solutions for over an hour, I then tried turning off and restarting my WiFi router, and that solved the problem for me. I hope you find a solution for your problem.

[spdickens]

Same issue. recently purchased new 656 printer. When I go to scan it can never recognize computer unless I unplug a re-plug in my usb connection. My ethernet connection does not work at all. Never had any issues with my older Fujitsu scanner; wish I never switched to Canon. Can this issue be fixed??

[normadel]

I have worked as a networking technician. The world has become enamored with Wi-iFi as the ultimate in convenience. Unfortunately, Wi-Fi just isn't as reliable as a wired connection. Wi-Fi is  Ethernet, just like an Ethernet cable. But I'll take a wired connection over Wi-Fi every time. I have a Pixma inkjet that only does Wi-Fi and USB. After frequently having to reboot it to get my Wi-Fi connection back, I gave up on networking it and put it near my main computer with a USB hookup.  I won't buy a printer that doesn't have wired Ethernet capability.

[mreg]

Agree 100%.  I find that especially to be true for printers.  I have gone through so many headaches troubleshooting Wifi connection problems with my, friends' and relatives' printers that I ALWAYS recommend Ethernet connection for printers, and basically now for everything that can have an Ethernet port, TV's, desktop computers, music and video streamers, game consoles, except mobile devices. 

[normadel]

You do WIRED Ethernet connection. Remember, Wi-Fi  IS ETHERNET ALSO, just using radio waves to replace the wire. 😊 

[mreg]

I can't say I agree.  I think that in the entire industry "an Ethernet network" refers to wired networking and Wifi refers to wireless networking.  You'll just confuse people even more.

[normadel]

Are you replying to me?

What you "think" has no bearing on the mechanics of networking. Ethernet is a shared-media network architecture. It describes, among other things, the cabling that can be used and the topology of the network. I can get even more technical, but I'll spare you. The very first thing I learned in networking training and about the different architectures that existed before Ethernet was that wireless networking, which came to be called Wi-Fi for short, is just something that uses radio signals in place of the piece of wire. It does not change the nature of Ethernet. The "entire industry" has gotten used to using the short term for it. Enlightening people about what they are talking about shouldn't be confusing. There is Wired Ethernet and Wireless Ethernet (called Wi-Fi for short). Simple.

[mreg]

Your "technical" explanation doesn't impress me, I've been building computers and networks for 30 years, and as usual coming from someone who likes to hear himself talk and show how smart he is, you miss the point.  I was simply saying that it will confuse most people to talk about Wifi in terms of Ethernet.  That's it, notwithstanding your encyclical that no one asked for.      

[normadel]

So, you won't concur that Wi-Fi is Ethernet?