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Check of Batteries
A mercury battery will be fully usable over a period of one
year in normal circumstances. There will be a sudden drop
in voltage when its days are numbered. When the meter
needle visible in the finder is immovable at a bright place, it
means that the battery has run down. You may also check
the battery in the following manner:
1. While the Lens Release Button (27) is kept depressed,
take off the lens, as it is turned counterclockwise. (See
P.25)
2. Lift the outer ring around the Shutter Speed Dial (20)
and set the film speed to ASA 100.
3. Turn the shutter speed dial and set it to 1/125 sec.
4. While the finder is being looked into, detach the Meter
Switch (3) from the position of "OFF" and depress it in
the direction of "C". If the meter needle (49) comes in
alignment with the Battery Check Mark (50) between
the aperture readings of f/8 and 11, it means that the
battery is fully serviceable. If the needle has failed to
come to that point or gone farther down from that
point, it is advisable to change the battery with a new
one.
• Note that the all the marks necessary for the checking
of the battery are colored in red. Make sure that the
meter needle will come over the red mark when the film
and shutter speeds are set to the red and the lever is
depressed in the direction of the red-colored alphabet
"C". Check the battery in the correct order shown on
the battery check seal on the bottom of the camera
body.
• The meter takes two 1.35V National H-C, Mallory
PX-675 or Eveready EPX-675 mercury battery cells.
Care must be exercised in selecting the cells as there are
cells which look identical in shape but differ in
stipulated voltage, such as battery cells.
• In the event that your camera is not to be used over a
long span of time, take out the mercury battery cells
and keep them in a place free from moisture.
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