I posted earlier. Just a followup, I got in touch with Canon, and my MX892 had less than a week left on the warranty. By the build number, the printer had sat on the vendors shelf for 3 or 4 months before being sold to me.
I would unequivocably say there is a defective electronic component (capacitor?) which was used by Canon in the manufacture process, and they've reached their useful life.
I received a new printer under the warranty exchange, Canon did not send me another MX892, but instead a newer MX922. I didn't really mind receiving a different comprable model, but now I'm stuck with about 30 or so replacement cartridges I had in stock for the MX892, as this printer uses a different cartridge.
All in all, I would say it was a very painless warranty experience, Canon support staff did a good timely job on handling the problem for me, I would like to thank them for that.
This does not negate the problem though, these printer DO have a major problem, these printers all fairing in the same manner IS NOT just a coincidence, and I would recommend that anyone reading this thread whose printer is a few months out of warranty get in touch with Canon customer service by phone or email, explain the situation, and ask them to do right by their customers. Everyone who purchased this relatively expensive printer expected the same longevity and build quality as other Canon products have, or we wouldn't have bought them in the first place.
Do the right thing Canon.
