Discovery QDR Series Technical Manual
6-5
6.6 Control Panel Problems
If a Control Panel problem is suspected, or if control panel functions are not responding,
use the SQVERIFY program to help isolate the problem. From Discovery Main Menu,
select Utilities|Service Utilities|SQVERIFY. Select the Panel test function and run all
subtests.
6.7 Display Problems
Display problems can be grouped into four general categories: vertical stripe, horizontal
stripe, noise (dots, speckles, etc.), and no display.
Table 6-6. Display Component Locations
6.7.1 Vertical Stripe
This type of display problem is most likely related to the detector subsystem. The
following suggestions apply to a Discovery system that exhibits a vertical stripe in the
display:
Component See...
Detector Boards Figure 5-11
Aperture Assembly
C-Arm Interface Board Figure 5-7
Filter Drum Assembly
Filter Drum Assembly (X-Ray Beam Alignment) Page 4-4
Detector Assembly (X-Ray Beam Alignment) Page 4-4
Printer (if quality is bad on printout or no bone displayed).
X-Ray Tank and X-Ray Controller Figure 5-7
Collimator Figure 5-7
Check... Refer to...
Detectors Check for signal strength and noise in graphic mode
of X-Ray Survey (see
“X-Ray Survey” on page 9-1)
Narrow vertical stripe - bad detector Data Acquisition System heading, Section 2, for
block diagrams and interconnection charts or run the
DAS tests in SQVERIFY.
Foreign matter (especially metallic) anywhere
in the X-ray beam path in the aperture slit,
collimator cup, etc.
Also...
Run the hardware checker SQVERIFY
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