Why doesn't the feed tray lift on my Canon DR-9080?

Hi Marc,
***Make sure that you plugged the cable that comes from the camera detect PCB (sensor) into the document board assy (metal part under the plastic tray).*** You said you checked all the connections, but I would recheck them, and trace them all the way through the metal lift mechanism...the cabling has junctions that run through the metal box all the way across to the right side of the machine and plug into the 10Sub PCB. You will have to remove the metal lift mechanism and unplug to cables from the 10Sub PCB. You will also have to separate the upper and lower parts of the metal box. You might as well clean the metal box out, check the plastic gears, make sure the motor is plugged in, and regrease the plastic gears if they look like they need it. Check the wiring for crimps or breaks too. When you reassemble the box, make sure that the black "U" shaped photo interrupter doesn't get knocked out of place. If everything still looks ok, I would replace the sensor and retest. The buzzing noise from the lift tray may or may not be related. There is a stepping motor in the lift tray assy that could have a problem. Order them both, they are pretty cheap.

Hope that helps...let me know

Which sensor do you need to replace? These machines have several sensors throught the machine that assist with lifting the tray, watching for staples, and even double feed detection.

Try cleaning the staple detection sensors in the machine. Most of the time if you blow air gently into the machine to clear dust from the sensors.

A01 is pickup error. Clean the paper sensor in the paper lifting tray and try. Clean the rubber rollers also.
S. Mohan, Chennai, India

The printer's pickup roller needs to be cleaned or if its worned needs to be replaced. The pickup roller is the little blue rubber roller behind the cartridge. If it still doesn't catch you'll need to strip the machine down until you get to the springs that lifts the papertray. Stretch the springs a bit. This will cause the paper to be pressed against the pickup roller. Re-assemble the machine and try it.

Disconnect the scanner from the Comp, Try 'page counting'. If the papers go through, then you know feed mechanism is okay. if the tray is not lifting, then you have a problem. Use Qumatool software and check if the tray is lifting. If the scanner tray if lifting then the motor is okay, if not, the lifting motor may need a check.If the motor is okay, but tray not lifting means the sensor in the paper tray is faulty. Check this out.

S. Mohan, Chennai, India

Use Qumatool and check if tray is lifting. If it is lifting, then Tray lifting motor is okay, then you need to adjust the sensor just under the Document lifting tray. If it not lifting, then you may have to change the motor. (Just now saw yr note and replying, hope it is not tooooo late!) S. Mohan

The small ribbon cable underneath of the lift tray is probably broken.

Michael, U can buy 9080C service manual at tradebit.com 9080C has no belt for lifting the tray. It has arm and a few gears. Ensure that the plastic gears are not deformed. Good Luck. Which version of Capture perfect do you use? 
S. Mohan

Check the roller cover. If the roller cover is not firmly closed it will cause a feed error.
I opened and firmly closed the roller cover until I hear it click.

After that it lift the tray to scan..