iv P/N 9-500-0255
Service Manual
7.0 X-ray and Light Field Check and Alignment Procedures ........................................................4-44
7.1 X-ray Beam Alignment Template ....................................................................................4-44
7.2 Exposing and Viewing the X-ray Field ............................................................................4-45
7.3 Aperture Adjustment Procedures ....................................................................................4-46
7.4 Auto Aperture Alignment ...............................................................................................4-47
7.4.1 Align the 24 x 30 cm Large Focal Spot ....................................................................4-47
7.4.2 Align the 18 x 24 cm Large Focal Spot ....................................................................4-48
7.5 Magnification Full Field (18 x 24 cm) Aperture Alignment (SM FS) .................................4-50
7.6 10 cm Coned-down Contact Aperture Alignment (LG FS) ...............................................4-50
7.7 7.5 cm Spot Contact Aperture Alignment (LG FS) ...........................................................4-51
7.8 7.5 cm Spot Magnification Aperture Alignment (SM FS) .................................................4-51
7.9 X-ray Field Alignment Verification .................................................................................4-51
7.10 Light Field Alignment Check and Adjustment ...............................................................4-51
7.11 Light Field Edge Contrast Check ...................................................................................4-53
7.12 Light Field Illuminance Check ......................................................................................4-55
8.0 Mechanical Adjustments ......................................................................................................4-56
8.1 Compression Chain Tension Adjustment ........................................................................4-56
8.2 Compression Display Potentiometer Adjustment ............................................................4-57
8.3 Compression Force Load Cell Setting .............................................................................4-57
8.4 C-arm Safety Microprocessor Board Calibration/Vertical Drive Force Load Cell Setting ..4-58
9.0 Maintenance Procedures ......................................................................................................4-59
9.1 kV Control Offset Calibration .........................................................................................4-59
Chapter 5: Maintenance—General .................................................................... 5-1
1.0 Introduction ............................................................................................................................5-1
2.0 Preventive Maintenance .........................................................................................................5-1
3.0 Troubleshooting .....................................................................................................................5-2
3.1 Theory of Operation Overview ........................................................................................5-2
3.1.1 Operator Control Panel .............................................................................................5-2
3.1.2 Power Distribution ....................................................................................................5-3
3.1.3 System Control ..........................................................................................................5-3
3.1.4 Tubehead Functions ..................................................................................................5-4
3.1.5 X-ray Tube Control ....................................................................................................5-4
3.1.6 Mechanical Functions ...............................................................................................5-5
3.1.7 Exposure Control .......................................................................................................5-6
3.1.8 Automatic Exposure Control ......................................................................................5-7
3.2 Alert Codes Log ................................................................................................................5-8
3.3 System Data Retrieval ....................................................................................................5-10
3.3.1 Downloading Alert Codes Log ................................................................................5-11
3.3.2 Downloading Calibration Data ...............................................................................5-11
3.3.3 Uploading Calibration Data ....................................................................................5-12
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