Chapter 9 Page no. 1312
JC-DR-A-247.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card D/R A247 - Motorized Compression Brake
6-3 Check the Compression Movement
1. Check that both sets of compression/decompression pedals and the manual compression knobs
located on the paddle holder all function correctly. That is, the paddle moves up or down in response
to each control.
2. Use the mammography compression scale placed between the Bucky and the compression paddle
to check calibration of the compression force display on the Gantry readout. Measure one point at 5
daN and one point at 15 daN. The value on the Gantry readout must agree within ±1 daN. If it does
not, perform Job Card CAL A048 - Calibration of Compression Force Sensor on page 1709.
Note:
If the recommended compression measurement tool is not available, this verification can be done
by lowering the paddle close to the top surface of the Bucky, installing the magnification device in
the upper pair of holes, and connecting a spring dynamometer (calibrated from 0 kg to 15 kg) be-
tween the compression paddle and the magnification device.
7 COMPLETION
None
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