During Winter months increased static electricity is reeking havoc causing feeder failures due to PVC cards sticking together. A good analogy is rubbing a air filled balloon to your hair and letting go. It “sticks”. The ZXP Series 7 card printer is extremely reliable. However, should a hiccup such as a card jam occur watch the 50 second YouTube video below to properly clear a card jam without causing unnecessary damage to your Zebra ZXP Series 7 card printer.