To remove a battery interface unit (BIU) or rectifier, first attach a grounding strap from the cabinet to your bare wrist, and then perform this procedure.
Procedure
Unlock the latch pin.
Pull down on the locking lever until the BIU or rectifier moves forward and disconnects from its socket.
Pull the BIU or rectifier out just enough to break contact with the backplane connector.
Use steady, even force to avoid disturbing the backplane.
