Canon EOS 7 - Manual (Page 7)

Handling Cautions
LCD Displays
In time, the camera’s LCD panel display and the LCD display in the
viewfinder may fade and become difficult to read. If this happens, have it
replaced (at cost) by a Canon Service Center.
At low temperatures, the LCD display response may become slower. And
at 60'C or higher temperatures, the display may blacken. In either case,
the display will return to normal at room temperature.
Lithium Batteries
(1) The camera operates on two CR123A lithium batteries. Check the
battery level in the following cases (->page 18):
• After replacing the batteries.
• After not using the camera for an extended period.
• The shutter stops working.
• The camera is being used in a low-temperature environment.
• You will be shooting an important event.
(2) Before installing the batteries, wipe the battery contacts to remove any
fingerprints and smudges. This is to prevent faulty connections and
corrosion.
(3) Never disassemble or recharge the batteries. Also, never store a
battery in high-temperature places or short circuit the battery contacts
or toss a battery into a fire.
(4) Although the batteries work well even at low temperatures, battery
performance may decline slightly at freezing temperatures. In such a
case, keep spare batteries warm in a pocket, etc., and use and warm
the batteries alternately.
How Low Battery Levels Affect Camera Operation
On the LCD panel, if the < Q > icon blinks or if is not displayed, a proper
exposure can still be obtained as long as the shutter releases. However,
when the battery level is low, film advance and auto rewind might stop
midway or not work at all and < [| > may blink on the LCD panel. After the
batteries are replaced with new ones, film advance will be possible and film
rewind can resume by pressing the < Os* > button.
Contacts
Lens Electrical Contacts
After detaching the lens from the camera, put on the
lens caps or put down the lens with the rear end up
to avoid scratching the lens surface and electrical
contacts.