Polaroid 636 Repair Manual page 102

3. Model 636 Camera Test Procedures (in the order in which they should
be performed).
Model 636 Flash Timing This test determines if the proper infrared sensing is
accomplished during a strobe exposure. The time between shutter blades being
95% fully open and strobe fire is measured and displayed in milliseconds.
NOTE: This procedure assumes the Tester is ON and the Camera is on the horn,
against the Tester.
DETAILED TEST PROCEDURE
1. Turn the Selector Knob in the
middle of the panel to 640
FLASH TIMING.
2. Press the S10 button only to
charge the electronic flash.
Do not fire the flash.
3. Press the tester RESET button.
4. Cover the photocell and press
S1 to make an ambient exposure.
Ignore the readings.
5. Cover the photocell and press
Sl/S10 to take a flash exposure.
Record the reading shown on the
Timing meter and compare it to
the specification.
6. Repeat steps 2, 3, 4 and 5 two
more times to insure accurate
readings.
7. If the readings are not within
the specifications, refer to the
Adjustments section.
SUMMARY
1. Selector to 640 Flash Timing.
2. Press S10 to charge flash.
3. Press Reset.
4. Cover cell, press S1 for ambient exposure.
Ignore readings.
5. Cover cell, press S1/S10 for
flash exposure. Record reading on
Timing Meter. Compare to spec.
6. Repeat 2, 3, 4 & 5 two more times
7. If readings are out-of-spec,
see Adjustments
96