Xerox Phaser 8400 Service Manual page 315

8.
Insert a T-20 Torxbit through the slotted hole in the Transfix Load Module,
engage the hole on the back of the module, and gently lever the module's spring
cam toward the center of the printer to release/unhook the spring hooks from the
Transfix Load Arms. Slowly relax the lever to return the spring cam to the
relaxed position.
Caution
Ensure that you lever the spring cam towards the center. Applying the
pressure in the wrong direction can damage the Transfix Load Module. Also,
placing too much force in the leverage action could destroy the cam.
Service Parts Disassembly
Transfix Load Module
s8500-087
8-27