Canon A-1 Repair Manual page 17

16
shutter is functioning or the self-timer is in opera-
tion. This saves the battery.
Some people find it easier to
~oncentrate
on composing
the picture without the viewfinder information. A
swi tch is provided so the display cam be turned off.
(2) Contents of the viewfi nder display
1) Information format
The following display format is used in the view-
finder:
BBBBBB
M
2) Information displayed
(a) Shutter speed
1/2 step increments from 1/1000 sec. to 30
sec. in 1/2 step increments, plus "8",
maximum four digits. ("BOO is displayed as
bu Lb
orbu·)
(b) Aperture
f/l.2 to f/32 in 1/2 step increments,
two-digit display.
(c) The "F" letter dis p lay lights up when the
f l ash unit (155A or 199A) is used and ready.
(d) The "MOO letter lights to warn when the camera
is not set for AE operation.
(e) When the tension of the aperture signal coupl·
ing lever of the camera is cancelled, the
error mark lights up (six LEDs light up as
EEEE EE).
If, after stopping down the lens by lens
disengaging it from the
~A"
mark, the stop-
down lever is rele a sed and the lens aperture
ring returned directly to the "A" mark, the
error mark will light up.
If this happens, the shutter button cannot be
released and no further pictures can be taken
.
;
Under the same situation for the AE-l it is
necessary to turn the aperture ring to the
-
.