If you try the instructions below, and the motor test fails, you can send it in to Cuisinart for a trade-in, but the trade-in will be just as expensive as getting a new food processor (unless your product has an extra-long motor warranty):
You can test the motor by plugging the food processor in, pressing the on switch and using a pen to press the dark grey or black button on top of the base of the food processor. As long as it spins, the motor is definitely good. Next, unplug the food processor. For the food processor to work, you need to have the work bowl, lid, and pusher sleeve all inserted - if one part of the work bowl is not attached, then the food processor will not spin the blade. Once all three pieces have been inserted, plug it in and turn it on. If the blade is still not spinning, then there is a problem with the element that runs from the back of the pusher sleeve down through the work bowl that triggers the motor button. In that event, you can go to Cuisinart's website and order a new bowl, lid, and/or pusher sleeve - if you see any obvious damage to one part, you can order just that one part. If it is not apparent which part is damaged, order the whole work bowl. Make sure you enter your exact model# at Cuisinart's website, because a DLC-7 is not the same as a DLC-7E or 7P, for instance. The work bowl parts are expensive, so I would just write down the part numbers from Cuisinart's website and find them cheaper elsewhere. There is also a video on the website that shows you how to use the food processors - the first part of the video describes work bowl assembly. Once you get this food processor working, it is going to last forever. Have fun!
-Tha Mp3 Doctor