Chapter 5 Service Instructions
HF Series X-ray Generators - Service Manual Revision W
Quantum Medical Imaging, LLC
5-83
d. Perform Filament calibration procedure (refer to Chapter 3,
Calibration (ODYSSEY) or Appendix B (DiRex Integration gen-
erators), or Appendix D (all other integrated generators)) and
re-check mA calibration).
Power Supply Board A6 (P/N AY40-005T) Removal
CAUTION! The Power Supply Board contains elec-
trostatic sensitive devices. Observe proper
grounding precautions before handling the Power
Supply Board or any other circuit board.
1. Set the power on/standby switch on the Operator Control Panel
(OCP) to the standby ( ) position.
2. Set the ON/OFF circuit breaker CB1 on the generator cabinet to
OFF position.
3. Tag and remove all cables connected to Power Supply Board A6.
4. Remove four (4) screws securing Power Supply Board A6 to the
PCB Door and remove the Power Supply Board.
Power Supply Board A6 (P/N AY40-005T) Replacement
CAUTION! The Power Supply Board contains elec-
trostatic sensitive devices. Observe proper
grounding precautions before handling the Power
Supply Board or any other circuit board.
1. Place the new Power Supply Board A6 on standoffs in PCB Door
and secure using four (4) screws.
2. Connect all cables to Power Supply Board A6. Remove tags.
3. Set the ON/OFF circuit breaker CB1 on the generator cabinet to
ON position.
4. Set the power on/standby switch on the Operator Control Panel
(OCP) to the on ( ) position.
5. Check for the following voltages at specified connector pins/test
points:
a. 24.55 to 27.15 VAC between A6J1-7 and A6J1-8.
b. +14.25 to +15.75 VDC between A6TP10 and A6TP1.
c. -14.25 to -15.75 VDC between A6TP5 and A6TP1.
d. +22.8 to +25.2 VDC between A6TP8 and A6TP1.
Note: The Power Supply Board’s +48 VDC output
may be adjusted (using A6R17) up to +55 VDC
(max.) in cases where long-length high tension
cables are used and/or a heavy duty x-ray tube is
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