2.2 S
ENSOR SWITCHES
No. Code Name Function
1 BP SW Camera back Becomes Low when the camera back is
open/close switch open.
2 CMSP1,,2,3SW Shutter-cocking phase Detects the shutter cocking, mirror
switch up/down operations.
3 MIF SW Lens switch Detects the attachment/detachment of
the lens. Turns ON when the lens is
attached.
4 SHBUSY SW External flash detection Detects the attachment/detachment of
switch the external flash.
5 POPEND SW Pop-up detection switch Turns ON after the built-in flash pops
up.
6 POPCTR SW Pop-up control switch When the flash phase changes from
H→L→H, the motor stops.
7 X SW X switch Flash fires.
8 CN2 SW 2nd-curtain switch Turns ON when the shutter’s 2nd
curtain’s traveling ends.
9 DX1-5 SW DX code switch Detects the film ISO speed.
10 PTIN SW Film cartridge detection Detects whether or not a film cartridge
switch is present. Opens when there is a film
cartridge.
Part 2: Technical Information
2-24
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