You have two (2) sensor that have to be made, the first one is on the bottom of the feeder and the other one is at the very top of or near the feed roller. When you block the bottom sensor the feeder should move up. If the feeder does not move up their is a problem with the cable that connect to the printer and the feeder or it could be the Motor control board that is inside the printer itself. I would check the connection first, covering the bottom sensor if it does not move up most likely the control board is bad. Also make sure that the feeder in position switch is also made by the feeder plate.
Answers & Comments
You have two (2) sensor that have to be made, the first one is on the bottom of the feeder and the other one is at the very top of or near the feed roller. When you block the bottom sensor the feeder should move up. If the feeder does not move up their is a problem with the cable that connect to the printer and the feeder or it could be the Motor control board that is inside the printer itself. I would check the connection first, covering the bottom sensor if it does not move up most likely the control board is bad. Also make sure that the feeder in position switch is also made by the feeder plate.