P/N 9-500-0255 6-37
Service Manual
Chapter 6: Maintenance—Remove and Replace Procedures
C-Arm Components—Remove and Replace
10. Install the high voltage lead and the filament connector to their receptacles on
the rear of the x-ray tube.
11. Reset the Exposure Counter.
12. Perform the following exposure system setup procedures:
Section 4.1, Tube Voltage Calibration
Section 4.3, Filament Current (mA) Calibration
Section 5.3, Initial Calibration—Large Focal Spot (Mo)
When the exposure control system is calibrated, perform the following compliance
checks (Chapter 4):
• Section 6.1, Half-Value Layer
• Section 6.2, Reproducibility and Linearity in Manual Mode
• Section 6.3, Reproducibility in Auto-Time Mode
• Section 6.4, Reproducibility in Auto-kV Mode
• Section 6.5, Reproducibility in Auto-Filter Mode
• Section 7.0, X-ray and Light Field Check and Alignment Procedures
• Section 5.1, AEC Detector Gain Calibration
3.2.2.1 Exposure Counter Reset
The Affinity Series keeps track of the number of exposures made. Whenever the
x-ray tube is replaced, it will be necessary to clear - or reset - the exposure
counter to accurately tabulate the number of exposures made with the new x-
ray tube.
Note… This procedure is only necessary after installing a replacement x-ray tube.
1. Set the unit for the service mode (S2 switch 1 = ON).
2. Access the Debug Screen (Chapter 3, Figure 3-10) and record the number of
exposures taken since last reset (data line EXP:).
3. Access Calibration Screen #3 (Table 4-2) after power up.
4. Highlight the Special data field. Press a Change key until the field reads:
Clear Exp Cnt
5. Press Reset + Comp. Release together to reset the exposure counter.
6. Return the unit to the user mode (S2 switch 1 = OFF).
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