Canon pro9000 Carriage lift mechanism err...

hi i am a certified Canon repair tech for this printer. this machine has a service bulliten for this problem and i have preformed the repair of this problem. the carridge lift cams are rotating faster then they should due to the wrong grease being applied to the part at the factory. this will require a Canon service center to repair because they is a special grease that needs to be used to slow down the cams. the best way is to contact Canon at 1-800-OK-CANON to locate a service center near you and they will repair the machine under the warrenty. hope this helps.

I am not a tech.  I don't guarantee anything.  It just worked for me.  Here is what I did.  uNPLUG THE PRINTER.  The covers on the Pro 9000 are snapped on so locate the slots that look like a flat screw driver will fit.  Insert the tip of the screwdriver and lift on the covers and they will come off. 
Now, looking at the printer from the front, on the right side you will see a group of white gears with a black gear at the bottom.  The black gear has a 'flag' that us used by the sensor right there.  If you spin the white gear that is second from the top, it will lift the carriage to the hightest position.  Leave it at that position.  
On ther front edge of the area where the printhead slides from the right side of the printer to the left and back, you will see a small switch that is a safety switch that stops the printer from moving the print unit back and forth.  I taped it down temporarily so that the printer thought the cover was on.  
Next on the left side about 3/4s of the way down where the printhead would move to the left, you will see a small sensor looking up that sees the bottom of the print unit.  Lay a piece of paper over that sensor so that it is in the shade. 
BE CAREFUL and keep your fingers out of the printer.  Plug the printer in and depres the power button.  The printer shoud first cycle the paper feed area.  Then, BE PATIENT, the ink unit comes to life and continues on its initiation.  It should slide to the right and actually tap the frame once, then do the same move, but tap twice.  Then after a bit, the left ink cartridge will light and the carriage will move to a sensor on the left and it will light up each cartridge, then it will lower the carriage for a second, then slide completely to the left and then the right.  After several more girations, it will put the carriage where it belongs.
That worked for me.  Good Luck

Barf