LORAD AFFINITY Series - Auto Aperture Alignment

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P/N 9-500-0255 4-47

Service Manual

Chapter 4: Calibrations and Performance Checks

X-ray and Light Field Check and Alignment Procedures

Legend for Figure 4-12

1. Auto Aperture (Large Focal Spot)

2. 7.5 cm Spot Contact (Large Focal Spot)

3. 10 cm Coned-down Contact (Large Focal Spot)

4. 7.5 cm Spot Magnification (Small Focal Spot)

5. Mag Full Field (Small Focal Spot)

Figure 4-12: Affinity Apertures

7.4 Auto Aperture Alignment

The Auto Aperture (Figure 4-12) is used for 24 x 30 cm and 18 x 24 cm Large Focal Spot

exposures and is aligned as follows:

7.4.1 Align the 24 x 30 cm Large Focal Spot

Note… The Auto Aperture must be retracted for this procedure by placing a 24 x 30

cm Cassette Sensor Simulator on the breast tray. (Use the Image Receptor

Phantom Tool, PN 9-060-0403 or, if not available, strips of reflective tape

can be used.)

1. Remove the four outer screws securing the top plate of the Aperture (Figure 4-

11, Item 1).

2. Remove the top plate and left/back alignment blade (Figure 4-11, Item 2).