Chapter 9 Page no. 1356
JC-DR-A-261.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card D/R A261 - X-ray Tube Assembly
7 COMPLETION
1. Disconnect connector J4 from board PL104 and check that the message: TUBE HOUSING OVER
TEMPERATURE appears on the control panel.
2. Reconnect connector J4 and check that the message disappears.
3. Rotate the arm +/-90 degrees several times to ensure that the new tube is not shifting, then rotate the
arm back to 0 degrees.
4. Before proceeding with the calibrations and checks as specified below, perform a Clear Calibrations
operation. From the Service Desktop, click the Calibrations button, then select Detector, and Clear
Calibration.
5. Carry out the following calibrations:
Calibrations - Checks Job Card
Acquisition Image Chain
Bias Calibration Job Card CAL A003 - X-Ray Tube Focal Bias Voltage Scale Factor on
page 1655
Heating Current Calibration Job Card CAL A001 - Heater Current Scale Factor on page 1649
mAs X-ray Calibration Job Card CAL A012 - X-Ray Tube Heater Current on page 1673
Tube Tilt Calibration Job Card CAL A027 - Tube Tilt Calibration on page 1681
Collimator Calibration Job Card CAL A029 - Collimator Format Calibration on page 1683
Collimation Check Job Card ELE A028 - Collimation Checks on page 679
If Collimation Check not OK, repeat Collimator Calibration
Bad Pixel Calibration Job Card CAL A041 - Bad Pixel Calibration on page 1693
Gain calibration Job Card CAL A043 - Detector Gain Calibration on page 1697
flat field tests Job Card ELE A032 – IQ Tools Flat Field Test on page 699
If IQ Tests not OK, repeat all calibrations from Bad Pixel.
Half Value Layer Job Card CAL A046 - Half-Value Layer Measurement on page 1703
Conversion Factor Job Card CAL A045 - Conversion Factor Measurement on page 1701
Use the same dosimeter as that used for CAL A046
AOP: Automatic Optimization of Parameters
AOP Calibration Job Card CAL A051 - AOP Calibration on page 1723
mAs non linearity Job Card CAL A053 - mAs Non-linearity Calibration on page 1725
AOP/SNR Check Job Card ELE A038 - AOP Mode and SNR Check on page 707
If AOP/SNR Test not OK, repeat all calibrations from AOP Calibration
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