Nikon 9350 - Manual (Page 35)

2.4.2 Assembly
1. Loosen the battery door release to open the door. Insert
two AAA batteries into the EPA, oriented as shown on
the internal diagram. Close the door and secure the
Battery Door release.
Battery Door
release
2. The FLA-C has an alignment pin on the inside wall.
Align the pin with the groove on the side of the CIU and
slide the CIU into the FLA-C.
2-23
3. The 9350EPA has a silver alignment pin on the inside.
Align this pin with the hole in the CIU and thread it to
the FLA-C
Groove in CIU Alignment Pin
Hole in CIU Silver Alignment Pin