Section 6 - Fault Isolation
6-9
AREA /BMD/BMC/CV SPECIFICATION PROBLEMS
If... Possible cause Refer to...
X-ray beam
misaligned
X-ray beam alignment on aperture 11. Signal output level
should not rise or fall by a significant margin.
Page 4-1
X-ray beam
quality
problems
Measure X-ray peak potential and tube current waveforms.
Make sure they are both stable and within specs.
Check SUSQ bar graph for shifting or “dancing” X-rays. If
so, test X-Ray Controller.
Check A/C line for stability (voltage and frequency).
Page 3-17,
3-19
Page 4-4
Mechanical
frame
problems
Check motor drive belts for excessive play.
Ensure all hardware on the arm, frame, and drives are
secure and clear of moving assemblies (C-arm, etc.)
Page 7-1
Mechanical
motor drive
problems
Check for loose assemblies:
Detector array
X-ray tank
X-ray controller
Aperture assembly
Figure 5-10
Figure 5-8
Figure 5-18
Figure 5-18
The bone and/or tissue segments in the filter drum may be
defective or out of spec. If so, replace and restart system
testing.
Figure 5-18
through 5-23
X-RAY PROBLEMS
The following lists some common X-ray problems and some suggested solutions. Refer to
Section Two
Functional Description
for more information on the X-Ray subsystem.
No X-Rays
If... Check... Refer to...
X-Ray (28VDC LED) on
distribution board is not lit
X-ray enable LED on console and Signal
Distribution board should be out
“NO A/C Line Interrupts”
message at start-up
Interlock inhibit
28VDC cable to power console, power
distribution
X-ray controller interlock switch
Computer problems
Jumper (240VAC) on the isolation transformer
secondary (brown: 0 to 120)
Fast-on connections to the XRC power line
filters under the signal distribution PCB for
secure fit
Figure 5-1, 5-2,
5-14, 5-16
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