Switch Table - Canon A-1 Repair Manual

SWITCH TABLE
Switch
Name
Function
SWl
Metering Switch-l
ON at
shutter button
half stroke
SWl'
MD
Metering
Switch-l Motor
Drive metering switch
LM SW
Light Metering
Exposure preview Switch
Switch-2
SW2
Release
Switch
ON
at
shutter button full stroke
SW3
Display Switch
Finder display control switch
Switch
ON - Gnd.
Switch OFF •
H
SW4
Count Switch
Shutter time initiation switch
~
t=::O.625El, CTST="L"
GND _ SW4
OFF
(Count Start)
SW5
Winding CompLetion
SW5-5' indicates winding
condition.
SW
"L" • Cnd.
Wound
Released
SWS'
lID
Winding Hodel
AE-l
A-l AE-l A-l
Completion
SW
SW5 L
H
H
L
SWS'
H
H
L
L
SW5 11
ME SW5'
Disable SW
In series
with
SW5'
f
this switch
prevents me tor
drive operation
if
the
multiple exposure lever has been pressed.
SW6
AE Lock SW
Records and holds measured EV when
pressed. (Exposure memory
switch)
SW7
Power (Main)
Switch A - L switch
SW8
Battery Checker
Battery Check- 4-5H% flashing LED (Clears
SW (Clear SW)
all
circuits in mid operation)
TIME
1
2 sec. Self Timer During self
timer. operation, LED frequency
is 8 Hz for last 2 seconds, and 2 Hz for
TIME 2
10 sec. Self Timer first 8
seconds.
SPDW
Stop-down Switch ON when
stop-down
lever pushed
A-MSW
Au
to:-Manua 1 SW
OFF with lens at
"A", ON otherwise
AV/TV SW
Priority Mode SW
Selects aperture or shutter speed priority.
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