The power supply in the auxiliary box may have failed.
The power-supply circuit breaker may be open.
The lock may be improperly adjusted.
c. If the lock hums loudly, check for the following.
Failed connections on a capacitor attached to the lock.
A lock may be improperly adjusted.
d. If the tubestand will not move in a given direction, check for the following
The shipping restraint(s) may not have been removed.
The column-rotation lock may not be loosened.
2-19. SPOT-FILM DEVICE FAULT CONDITIONS
a. If the cassette carriage slams or jams during movement, one or more of the
following conditions may be present.
The position-sensor flags could be out of adjustment.
Check for a failed position sensor.
Check for loose position sensor connection(s) on the interface PCB.
Check for a cassette partially out of the carrier or not latched in.
The clutch-brake may be inoperative.
b. If the spot-film device itself is inoperative, check the following.
An open power-supply fuse in the auxiliary cabinet.
A fault in the central processing unit (CPU) PCB.
Look for any loose wiring.
Look for loose cable connections.