A loading the mercury batteries, A. loading the mercury batteries, Basic operation a loading the mercury batteries – Canon EF User Manual
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VI
BASIC OPERATION
A Loading the Mercury Batteries
Since the Canon EF's Variable Aperture AE control
and the electronic control of slow shutter speeds
depend on battery power for their operation, two
1,3 volt mercury batteries (Mallory PX 625 or
Eveready EPX 625) must be loaded Into the battery
compartments located in the bottom of the camera.
Turn the camera upside down and unscrew both
battery compartment covers with a coin. Load one
battery into each compartment making certain that
the '■+" side of the battery is up. Then replace both
covers and screw them back on tightly.
•
To insure good electrical contact, clean both
surfaces of each mercury battery with a clean dry
cloth and handle each by its edges only.
•
Be careful to load the batteries properly.
Improper loading (with the " side up) might cause
damage to the camera's electrical circuits.
• If the camera will not be used for a long period of
time, the batteries should be taken out of the
battery compartments to prevent possible damage to
the terminals from battery corrosion.