h. If the grid cabinet binds during movement, one or more of the following
conditions may be present.
A guide bearing which is adjusted too tightly.
Dirt or foreign matter in the bearing path.
A broken bearing.
Cabling catching or rubbing on other objects.
Check the counterweights for the above conditions.
i. If cassette sizing in the grid cabinet does not sense properly, check the
The tray was not properly inserted (operator error).
Check for loose or broken grid and/or table connections.
The cassette-locating stops could be incorrectly positioned.
2-18. TUBESTAND FAULT CONDITIONS
a. If the tubestand's mechanical motions are binding or not smooth, check for
the following conditions.
Bearings which are adjusted too tightly.
Check for foreign material in the bearing path.
Check for locks not releasing.
Check the counterweight for proper adjustment.
The tubestand may not be level.
b. If the electric lock(s) is(are) inoperative, one or more of the following
conditions may exist.
Check for a poor cable connection.
There may be pinched or damaged wiring.
If the lock has failed, replace it.