h. Fluoro. If there is no fluoro kvp reading or no fluoro image, the following
conditions may exist.
The fluoro circuit breaker may be open.
Look for a loose power connection to the variable transformer.
Check for an open fluoro damper resistor.
Timing. If exposure times are inaccurate, check for the following conditions.
The incorrect timer deck has been selected.
Look for dirty or damaged contacts on the time-select switch.
A shorted SCR contactor.
A fault in the timer PCB.
The timer is not calibrated or has gotten out of calibration.
2-17. X-RAY TABLE FAULT CONDITIONS
a. If the table-tilt function is inoperative, check for one or more of the following
The table is already at its limits (12 Trendelenburg or 88 vertical).
Look for a loose cable connection.
The variable speed-drive may be miscalibrated.
The slow-down adjustment may be miscalibrated.
Look for an open tilt circuit breaker.
The tilt motor may be inoperative or a belt broken, frayed, or otherwise
b. If the table body jerks to the side when tilting, check for the following.
The table base may not be stable (level).
The sector-guide bearings may be worn or not adjusted properly.