Canon EOS-1V HS Instructions Manual page 123

The film does The temperature is cold, and it has suddenly affected the
not rewind battery level.
automatically. Replace with a new battery. (→p.19) Keep a spare battery
on hand and warm the battery in your pocket alternately.
(→p.7)
C.Fn-1 is set to 1 or 3.
Set C.Fn-1 to 0 or 2. (→p.98)
The battery level is very low.
The < >
Replace the battery with a new one. (→p.19)
icon blinks
on the LCD
A misoperation has occurred with the camera, lens, or
panel.
Power Drive Booster.
Remove and reload the battery. (→p.19, 116) If the < >
icon stops blinking, picture-taking is possible. If it is still
blinking, consult your nearest Canon Service Center.
Troubleshooting Guide
123