Service Manual

Canon NEW F-1 Service manual
Page 28
Adjustment Notes
14. Maximum Aperture (AVO) Indicator
14.1 Set AVO= 2.8 (Max. Aperture Pin Height =
6.9±0.03mm)
14.2 Bend the lever (dwg.) so that the top of the red
mark is positioned within the hatched area.
14.3 Check other maximum apertures. They should
also fall within 0.3 to 0.5f of the same position.
15. Aperture Mask Installation and Adjustment
15.1 The distance from the "A" surface to the
bottom of the mask opening is 2.42±0.03mm.
15.2 The distance from the "B" surface to the
bottom edge of the shutter speed opening is
2.70±0.03mm.
15.3 The distance from the C surface to the f/1.2
end of the aperture scale mask aperture is
16.2±0.1mm. When the mask is correctly
positioned, bond it with diabond.
15.4 To position the aperture scale film, install the
film with diabond, install the prism and position
the film before the bond hardens.
16. Frame Counter Adjustment
16.1 With the frame counter in the returned
position, the stop claw should be
engaged and flush against the 7th tooth
±0.1 Adjust with the eccentric.
16.2 Adjust the advance claw with the hex-head
eccentric so the tip of the claw is 0.3 to 0.6mm
up the slope of the 5th ratchet tooth.
16.3 When the advance claw is at maximum stroke,
adjust so that the clearance of the stop claw is
0.2 to 0.4mm.