Canon EOS 1V, Service Manual, Page: 65 / 240

1.5 S
HUTTER
A
DJUSTMENT
PURPOSE
To adjust the shutter speeds. If the fastest shutter speed meets the standard, it
means that all the shutter speeds have been properly adjusted. Also, as the
shutter speeds are adjusted, the shutter curtain closing adjustment is executed
automatically.
Definition of Shutter Curtain Closing Adjustment
If there is a problem with the shutter and the shutter curtains run without
opening, a warning is issued to the user. The camera measures the time from
the X-sync ON timing to the CN2 (second curtain switch) ON timing. If the time
fails to meet the standard, a BC error (error No. 21) is displayed.
STANDARDS
At a shutter speed of 1/8000 sec.:
Center time: 0.122 ms
Standard range: 0.086 - 0.173 ms
Shutter curtain speed: 2.2 ms
TOOLS
EF-8000
EF 50mm f/1.8 lens (commercially available)
PREPARATIONS
1) Attach the EF 50mm f/1.8 lens to the camera and set up the EF-8000 as shown
in the figure. Set the EF-8000 to the shutter speed measurement mode.
2) Start up the adjustment software and connect the camera to Multiple Tool II (or
HS-I/F). On the Main Menu, select [F1] shutter adjustment. Set the camera to
manual mode, shutter speed to 1/8000 sec., and aperture to f/1.8.
Fig. 4-4 Shutter adjustment.
4-11
Part 4: Electrical Adjustments
Shutter curtain travel time is not adjustable. If the curtain travel times fail to
meet the standard, the shutter unit must be replaced.
Curtain Travel Time Standards
First curtain:
2.2 +/-0.1 ms
Second curtain: 2.2 +/-0.1 ms
CAUTION
EF-8000
Attach EF 50mm f/1.8 lens.