Canon Canonet 1 Service Manual page 70

6.10. 10. When you want to read the quantity of the swing, measure it following the directions below.
Set the SHUTTER SPEED dial at 1000.
If - the needle of the meter swings f r o m - 1 0 0 to 0 when you press the shutter button, the time lag in this
case is 1 m. s.
When the SHUTTER SPEED is at 500, it will become 2 m. s.
11. If the needle does not swing, measure it following the direction below because the contact is not on the
6. 10.
open position but on some stopped down one.
Turn the aperture ring a little from the open position. Turn the aperture ring to the position which is a quarter
from 1. 9 to 2. 8.
The needle of the meter is expected to swing when you measure on this condition.
6.10. 12. The needle of the meter will return to —100 if you return the MEASURE lever to RESET after measuring.
6. 11. How to Measure the Time Lag of the M Contact.
6.11.
1. Set the FUNCTION dial at M.
6.11.
2. Set MEASURE lever at MEASURE.
6.11 3. Set the SHUTTER SPEED dial at m. s.
6.11. 4. Connect the red cord of one end of the Sync-Cord with SYNC. POST, the black one with GND and another end
with the flash socket of the camera.
6.11. 5. Set the aperture ring of the camera at full open (1.9) and the flash setting lever at M. (Any shutter speed
will do.)
6.11 6. Open the hinged back of the camera.
6. 11.
1. Place the camera on the camera stand. (The lamp will be lighted.)
6.11.
8. Press the shutter button.
6.11.
9. The needle of the meter should indicate the value in the standard range (14. 5—19m. s.)
(Read the value by the numbers of m. s. of the lower scale of the meter.)
6. 11. 10. The needle of the meter will return to - 1 0 0 if you return the MEASURE lever to RESET after measuring.
7. HOW TO TREAT AND PRESERVE
7. 1. Give neither vibration nor shock to the Lens Shutter Testers.
7 2. Be careful not to let the intense direct rays fall on the photoelectric tube on the Tester B.
7. 3 Usually, test with the aperture full open.
7. 4. The LIGHT of the Tester B corresponds to the aperture of the camera approximately as follows.
. "
•fi
1mS
20
% ms
LIGHT
1
2
3
3
s.
+
Aperture
open-2. 8
4 - 1 1
16