Polaroid 636 Repair Manual page 84

g. Remove the film pack simulator and door pawl closure:
- the counter will return to its starting position.
h. Insert a known good film pack with film into the camera. Take a 2-foot cyan
background picture with strobe:
- observe that the film transport and delivery systems are functioning properly.
- observe the finished picture for complete coverage.
- observe the finished picture for evidence of dirt or cracks on the taking mirror.
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