A-27
X-ray controller is not generating system timing interrupts [E_INTERLOCK_INHIBIT_I]
Comment: There have been at least two consecutive system clock ticks (approximately
1/10 second) without any A/C line frequency interrupts from the X-ray controller.
Action: Verify that the X-ray controller current fuse on the operator console is not
"popped". If it is, push it in. If it continues to pop, repair or replace the X-ray tank.
The E_EMERGENCY_STOP_I error also turns off power to the X-ray controller and
thus disables the A/C line interrupts. Follow the procedure under
E_EMERGENCY_STOP_I to clear this condition first.
Refer to the “NO A/C Line Interrupts” message at start-up on page 6-9.
X-ray firing order is out of sequence [E_XRAY_SEQUENCE_I] Comment: The X-ray pulse level reading from the C-arm did not match the expected
level (i.e., the C-arm driver has a "template" for each X-ray pulsing mode and if the
actual pulse level does not match the template for the given X-ray mode, it generates
this error).
Action: If the filter drum and X-ray generator are out of sync, it is often difficult to
determine which is at fault. Verify that the filter drum is synchronized with the A/C
line and that the X-ray modes are correctly defined in SQDRIVER.INI. The set screw
and/or the belts on the filter drum assembly may need adjustment (in addition to the
two drum pickoff segments). To aid in diagnosing the problem, disable the filter drum
and X-ray hi/lo monitors in SQDRIVER.EXE (remember to re-enable them before you
leave the program). Another problem that may occur is that the X-ray filament thermal
overload has tripped. To check this, turn on X-rays in SQDRIVER.EXE and verify
that the XraySignalLevel readback is changing (and does not read zero). If it reads as
zero, wait 2-3 minutes for the thermal overload condition to clear itself and then try
again. To see if the X-rays are pulsing properly, turn off the filter drum and then turn
on X-rays.
ERROR MESSAGE
HARDWARE
/SOFTWARE
ERROR
LOCUS COMMENT/ACTION
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