

CANON MP640 PRINTER NOT RESPONDING WIRELESS UPDATE
Though an issue with the app seemed to be eliminated, I thought I might as well reinstall it before any further troubleshooting, in case an update (if any) helped anything. (There’s been enough paper in both front and back trays throughout). At one point an ink cartridge needed replacing, and the app correctly said 'Check Printer’. And 'Unable to communicate with the printer’, while at the same time the printer has just opened its output door and is preparing to spit out a blank sheet.
CANON MP640 PRINTER NOT RESPONDING WIRELESS PDF
E.g., ‘An error has occurred during the data conversion process’ ‘The printer is currently being used’ 'Save to PDF’ being the only option, even while trying to print the PDF already created. The app's messages vary with the type of file, or the route taken to the Print command. The app usually shows the file is loading, and the printer shows 'printing from PC.’ as normal, meaning from the phone (when I’ve gone up to look, at any rate). Trying to print is still always halted, with a variety of errors. I really need to print some things, and re-addressed the problem yesterday (including doing the Pixma’s wireless setup again), but with no success. I’ve tried again several times in the few weeks after that, with no success. I did the Pixma’s wireless settings again in case I’d overlooked some 'Save’ button, but no joy. But having turned the printer off for the night, in the morning I could no longer print, with various error messages in the app.

I did a few test prints (using the same app I’d been using all along), and they worked fine. A month or two ago I changed my internet and home wifi setup, and re-did the Pixma’s wireless setup (from its own display) with new wifi passphrase etc. My desktop & notebook computers have been awaiting attention for a year or so, during which I’ve been printing wirelessly from my (Android) phone using the Canon Print Inkjet/Selphy app, which worked most of the time. Any ideas? (Sorry this is a little lengthy - just trying to save questions!) I’m still very pleased with my Pixma MP640, but have run into problems with the only way I can print (from the phone app), and can’t think of anything else to try.
