Chapter 2 Assembly & Installation
Revision W HF Series X-ray Generators - Service Manual
2-48 Quantum Medical Imaging
1. Set ON/OFF circuit breaker CB1 on the generator cabinet to ON position.
2. Set the power on/standby switch on the Operator Control Panel or Power/
Expose Control Box on Q-VISION equipped generators to the on ( ) posi-
tion.
3. The system begins the start up sequence (the "Welcome Screen" is displayed
and "Testing. Standby." is flashing). After a few seconds, the normal opera-
tion screen will display.
IMPORTANT! If the system is a STORED ENERGY
(SE) type, and it has been longer than one month
since being shipped from factory, allow the sys-
tem approximately four hours to re-charge the
batteries before taking any exposures. The sys-
tem must be turned on with auto-shutoff disabled
to re-charge. Refer to "Generator Time-out Set-
ting" paragraph in Chapter 3, CALIBRATION for
detailed instructions.
4. If necessary, the operator control panel LCD display intensity can be
increased or decreased by adjusting the rotary potentiometer on the rear side
of the operator console.
TRANSFORMER TAP VALIDATION
1. On single-phase non-SE versions, using a DMM, measure the DC voltage
across the (+) and (-) terminals of the Anode DC capacitor bank (i.e., C13-
C16). The voltage should be 400 (±20) VDC. If not, re-check line voltage
and adjust transformer taps as required. (Refer to "Transformer Line Adjust-
ment" procedure in this chapter for detailed instructions.)
2. On SE versions, verify that 220VAC (±10%) exists between A8P1-4 and
A8J1-7. If these voltages are out of range, test the incoming AC line and con-
firm the correct taps have been selected at TB1. Monitor the charger output
voltages at A8TP2 (positive supply) and A8TP3 (negative supply) while allow-
ing the chargers to recharge the battery tray(s) until each test point rises to
±205 (±1.0) VDC. Note: Charging to these levels may take up to 2 hours. If
these levels cannot be achieved, check the integrity of the batteries in the
affected side of each tray.
3. On three-phase models (see Figures 6-49 and 6-50), correct transformer tap
connections will yield
220 VAC measured between phases A, B and C as follows:
a. Phase A located on Line Monitor Board A8 Fuse F4.
b. Phase B located on Line Monitor Board A8 Fuse F5.
c. Phase C located on Line Monitor Board A8 Fuse F6.
d. In addition, using a DMM, measure 265 VAC between terminal block
TB1 (neutral) and each Phase A, B and C.
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