56
Blade Speed Adjustment (Opening Blade Spring)
1. Remove the Top Cover from the camera (Figure 3-16).
Warning: HIGH VOLTAGE EXPOSURE! Up to 320V
is present on top flash tube terminal (green wire)
and at various other locations on the strobe board.
2. Using tweezers, carefully lift the upper end of the Opening Blade
Spring out of its
notch in the Shutter Base Block (Figure 3-19).
Caution: Do not overstretch spring!
3. If the Blade Speed is too slow, reposition the Opening Blade Spring one notch to the
right (when camera is viewed from the rear). If the speed is too fast, reposition the
Spring one notch to the left.
4. Put the Test Top Cover on the camera and retest Blade Speed. Readjust the
Spring position of necessary.
5. When the Blade Speed is within specification, replace the Test Top Cover with
camera’s own Top Cover.
6. If adjusting the Spring position will not bring the Blade Speed within specification,
replace the Spring and retest.
7. If the Blade Speed is still out of specification, disassemble the camera to the shutter
level (See the Disassembly/Reassembly Section of the Manual). Examine the
blade-opening parts. (Walking Beam/Inertia Assembly, Drive Link, etc.) and the
Shutter Blades for dirt, binding parts and damage. Correct any problems found,
reassemble the camera and retest the Blade Speed. Readjust the Opening Blade
Spring if necessary.
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