Service Manual

Canon NEW F-1 Service manual
Page 23
9. Checks and adjustments
Assembly and Adjustment Notes
1. Shutter Curtains Installation
1.1. In the wound condition, the leading edge of the 2nd curtain should be from 5.4 to
5.9mm from the edge of the film aperture.
1.2. The leading edge should be parallel with the edge within 0.2mm.
1.3. In the wound condition, the trailing edge of the 1st curtain should overlap the
leading edge of the 2nd curtain by 2.0 to 2.5mm, and this overlap should be
maintained throughout the winding cycle.
1.4. The edge of the 1st curtain should be parallel with the edge of the 2nd curtain
within 0.2mm.
Note: The 2nd curtain "minus latch" should not latched at the full wound (5.4 -
5.9mm) position.
2. 1st Curtain Brake
2.1. Check
1) From the maximum curtain travel position* to the fully wound condition, the ratchet
should move from the start position to the middle of the third tooth.
2) Even if the brake lever is pushed in the direction to the
end of its travel the ratchet should not go to the 4th tooth,
* Maximum curtain travel position: The curtains usually stop slightly short of this position
because of the brakes. For accurate checks, they can be pushed to the maximum with the
master gear.