Basically it stops responding to pings (which tells me that its WiFi network connection is the issue). Over the past few weeks I've discovered that if the printer goes to sleep for an extended period it frequently 'loses' it's WiFi connection and nothing I do from my PC will let me print to or scan from it. It's clearly a MX922 WiFi bug which Canon needs to fix ASAP. Any suggestions that it's my router or my PC driver's fault is nonsense. I also still have two MX890s that still work just fine. When the MX922 stops responding to pings, the blue WiFi logo on the front is on, and the Network Configuration Page always says 'Connection Active' (but it's not).
The old MX870 NEVER had a problem on this WiFI network and NEVER had a problem with sleep mode. The new MX922 goes to sleep and can't be woken up from any PC on my network (to print or scan). And the only thing that's changed is the printer (all the other PCs and printers and the Wifi router are the same as before and still work just fine). The old MX870 worked fine until it died but this new MX922 doesn't work correctly on my WiFi network. I have a new MX922 that replaced a dead MX870.
