Canon imageClass MF642Cdw prints only full black pages

[linka]

There is no error message on the screen. Printer takes unusually long doing its startup after wakeup, but then it accepts prints and only prints full black page.

I think this started after a power outage.

[shadowsports]

Greetings,

What happens if you print a test page?

You can also try resetting the printer, then re-test.  If all you get is full black pages, it might have been damaged from the extreme power fluctuations.  (surge, dip, etc.)