FUJICA AX-3 Owner's Manual page 8

3. If the red LED opposite the letter "B" at the bottom of the shutter
speed scale blinks (about 4 times a second), it's time to change the
battery because it is being worn out.
4. If no LED turns on in the viewfinder, the camera will not operate
because the battery is completely exhausted.
Notes: 1. If you are taking your camera on a trip, be sure to bring a
spare battery along.
2. When shooting in cold weather, check the battery frequently because low
temperatures will reduce battery efficiency.
3. If you are not taking pictures, turn off the main switch to prevent
unnecessary battery drain.
Main Switch
Your Fujica AX-3 has a main switch (ON/OFF/Self timer Lever) on the left
side top of the camera (next to the Film Speed Selector). Before you start
taking pictures and before you check the battery, be sure to switch it ON
by pulling the lever out toward you while watching the Main Switch Window-