Olympus XA - Manual (Page 12)

Automatic Flash Photography (Only the Electronic Flash A11 can be used.)
2. Connect the flash unit to the
camera.
Insert the guide pin into the guide
pin hole and turn the clamping
screw clockwise.
After connecting, do not twist
the A11.
1.5V AA battery
(Alkaline preferred)
1. Set the ASA film speed.
If the ASA speed of the film to be
used is close to "100" or "400",
use the nearest setting. (ASA 80
or 125 "100"). 11