HP LaserJet 1320 - Manual (Page 126)

Automatic two-sided printing (duplexing) path
To clear a jam in the automatic two-sided path, perform the following steps:
CAUTION Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage
caused by sharp objects will not be covered by the warranty.
1. Open the straight-through output door.
2. Rotate the green pressure release levers downward.
116 Chapter 6 Problemsolving ENWW