The power supply switch may not be turned on.
There may be a fault in the power supply.
c. If the cassette carrier does not move, although the motor runs, check for one
or more of the following conditions.
Damaged drive-belt teeth or a belt which has jumped a pulley.
Foreign material in the carrier path.
d. If the spot-film device senses the cassette is present without a cassette in the
carrier or it never/intermittently senses the cassette is present, the cassette-present
sensor may be out of alignment.
e. If the image size on the film is smaller than the size selected, check the
The wrong mask or compression cone was placed in field (operator
The collimator was incorrectly calibrated or is now inoperative.
2-20. COLLIMATOR FAULT CONDITIONS
a. If the collimator-field lamp does not light, check for the following.
A burned-out collimator field lamp.
An open 27vac power-supply protection fuse (F-2).
b. If the centerline light cannot be centered, check the following.
A prism/slit bracket out of adjustment.
The under-table image receptor may be out of alignment.
The source-to-image distance (SID) is out of tolerance.
c. If the exposure-hold indicator is activated, check for the following conditions.
The shutters are not properly aligned.
The vertical SID is not properly positioned at 40 inches SID.
The horizontal SID is not positioned at a standard SID.