Dr-9080c tray lifts up and down - Canon DR-9080C Path-Through Scanner

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

Check the inadequate Cable harness (normally purple loom) under the metal lifter . You will need to remove the plastic entry tray to see the metal lifter mechanism which is quite difficult.

Need more information. Does the doc elevator lift the paper to the pick rollers? Check the plastic lever that is attached to the upper feeder cover. Make sure the upper cover is closed properly Verify that the dark colored sensor is clean in the feeding tray

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

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

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

The paper tray is lifted by set of levers under the tray and the levers are operated by a motor, under the display panel. Check if the levers are in position. The motor movement is transferred to the lever by a plastic gear. Check if it is deformed. Normally motor does not fail.
S. Mohan, India

The scanner is assuming there is no paper. Just under the rubber rollers, in the paper tray there is a paper sensor. Clean that area with a damp cloth. Keep some papers and try "count-only". It it works then sensor is okay, else, you need to check the sensor.
S. Mohan, India

There is a paper sensor just under the rolers in the lifting tray. Clean the area thoroughly with a damp cloth. Keep some sheets and try ]count only'. If it works then the sensor is okay, then you can try your scanning. If it is not sensing paper, check the sensor or connections to the sensor.
S. Mohan, India

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