Chapter 9
Page no. 1026
JC-TSG-A-010.fm
GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
Job Card TSG A010 - Troubleshooting Bad Pixel Calibration Failure
3-2-3-3 Collimator Adjustment
When repositioning the collimator, make sure that you rotate the arm to +180°. For more information on
the screw positions that fix the collimator to the tube head frame, see
Job Card D/R A280 - Collimator
! Notice:
Make sure to strictly perform all calibration required for correction as stated by
.
4
POST-CORRECTIVE ACTIONS
4-1
Calibration to be performed after bad pixel calibration
4-2
Calibration to be performed after a kV scale factor calibration
Calibration/Test
Job Card
Bad Pixel Calibration
Job Card CAL A041 - Bad Pixel Calibration
Gain calibration
Job Card CAL A043 - Detector Gain Calibration
Flat field tests
Job Card ELE A032 – IQ Tools Flat Field Test
Conversion Factor
Job Card CAL A045 - Conversion Factor Measurement
Half Value Layer
Job Card CAL A046 - Half-Value Layer Measurement
AOP Calibration
Job Card CAL A051 - AOP Calibration
mAs non linearity
Job Card CAL A053 - mAs Non-linearity Calibration
AOP/SNR Check
Job Card ELE A038 - AOP Mode and SNR Check
If AOP/SNR test is not OK, repeat all calibrations from AOP Calibration
Calibration/Test
Job Card
kV Scale Factor Calibration
Job Card CAL A011 - Calibration of kV Scale Factor
X-Ray Tube Heater current Calibra-
tion
Job Card CAL A012 - X-Ray Tube Heater Current
Bad Pixel Calibration
Job Card CAL A041 - Bad Pixel Calibration
Gain calibration
Job Card CAL A043 - Detector Gain Calibration
Flat field tests
Job Card ELE A032 – IQ Tools Flat Field Test
Conversion Factor
Job Card CAL A045 - Conversion Factor Measurement
Half Value Layer
Job Card CAL A046 - Half-Value Layer Measurement
AOP Calibration
Job Card CAL A051 - AOP Calibration
mAs non linearity
Job Card CAL A053 - mAs Non-linearity Calibration
AOP/SNR Check
Job Card ELE A038 - AOP Mode and SNR Check
If AOP/SNR test is not OK, repeat all calibrations from AOP Calibration