Panoramic PC-1000, Service Manual

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14
© Copyright 2008 Panoramic Corporation
Perform Pulse Count Calibration
If a pulse counter IS available:
1. Disconnect the blue wire, 1-pin molex
connector in the overhead chassis.
2. Connect the positive lead of a pulse counter
to the male connector, negative lead to the
aluminum chassis or neutral wire from the
plug.
3. Power the machine on.
4. Using the function switch on the control panel,
select PANORAMIC L.
5. Using the kVp setting knob on the control
panel, set the kVp meter to 80 kVp on the
PANORAMIC scale.
6. Ensure that the RUN/STOP switch on the
printed circuit board in the overhead chassis is
set to RUN.
7. Locate potentiometer R57 on the printed circuit
board in the overhead chassis.
CAUTION: X-rays will be emitted when the
exposure switch is depressed.
8. Depress the exposure switch for the entire 12
second exposure.
9. The pulse counter should show 720 pulses
±
10 pulses. If it does not:
A. Adjust R57 counterclockwise (CCW) to
increase the pulses and repeat the test
until the pulse counter shows 720 pulses
±
10 pulses.
OR
B. Adjust R57 clockwise (CW) to decrease the
pulses and repeat the test until the pulse
counter shows 720 pulses
±
10
pulses.
10. Disconnect the pulse counter.
11. Reconnect the blue wire, 1-pin molex
PC-1000 Installation