Canon pixma pro 9000

SOURCE: Canon MP830 power outage while printing

My MP830 did the same thing today. I thought it was toast. However through a Google search I found the following suggestion.

Unplug the MP830 for 20 minutes or more. Plug the MP830 back in and hit the power button.

To might great relief my MP830 powered up and is working just fine.

SOURCE: canon i550 printer stoipped printing

My cannon printer no longer responds to any commands. I get 4 yellow blinking lights and then 1 green blinker.

SOURCE: Canon Pixma iP2000: yellow power light blinks-reset doesn't work

Normal 0 Normal 0 Driver could be corrupt.
Disconnect the printer or at least be sure it is turned off. I'd do both and reinstall the CD software program that came with the printer. When the software program asks you to connect the printer to the USB port, do so and it should again work properly.
Hope this helps. Bud

SOURCE: getting error code 6A00-Canon PIXMA MX850 all-in-one printer

6A00 means the purge assembly is jammed and not moving properly, AIR and SLIDES has nothing to do with it, the purge assembly is the unit on the right that cleans and primes the printhead. Previous advice is NOT from a Canon expert, I do these for a living.

SOURCE: When I turn on my

try this. It is the reset for the waste ink error (8 flashes)

1) With the printer power OFF, while pressing the Resume button, press the Power button. (Do not release the
power button.)
2) While pressing the Power button, release the Resume button, press the Resume button again twice, and then
release the Resume button and Power button.
3) The green indicator flashes during initialization.
When the indicator stops flashing and remains on, press the Resume button 4 times to clear waste ink message.
(The indicator toggles between orange and green each time the Resume button is pressed.)
4) Next, press the Power button, and the green indicator will light, and the function will be executed.
5) Turn off the printer then back on and error should clear.