Loading the batteries, Main switch – Canon 310 XL User Manual
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Loading the Batteries
(The same batteries power the exposure meter,
zooming system and film drive).
Insert 2 penlight batteries (size AA) of the same
brand into the battery compartment. Be sure that
the + and — ends of each battery are in the proper
direction.
* If the camera will not be used for a prolonged
period, remove the batteries and store them in a
dry place. (Batteries may leak and damage the
camera if left inserted for a long period of time.)
Main Switch
By turning the dial of the Main Switch to "ON", all
electric circuits are connected. Similarly, at "OFF"
all the circuits are disconnected, and, as a safety
measure, neither the shutter nor the zooming switch
can be operated.
* When the camera is not in use for a long period
of time turn the dial to "OFF", in order to
conserve battery energy. A red mark is visible
when the dial is in the "ON" position to let you
see at a glance that the power is "ON".