HF Series Generators
Calibration
CA-1036R2
53
8. Perform the following adjustments in the AEC Control Board:
a. Adjust R13 in order to obtain 6 VDC on TP3 (ABC IN).
b. Select 70 kV (or the kV obtained in step-7.) and increase 2 kV and
check the increased value of voltage in TP3 (ABC-IN) (if this value
has not been increased, increase 1 kV more). Note this value
(consider it as KV-DOWN-SEL).
c. Select 70 kV (or the kV obtained in step-7.) and decrease 2 kV and
check the decreased value of voltage in TP3 (ABC-IN) (if this value
has not been decreased, decrease 1 kV more). N ote this value
(consider it as KV-UP -SEL).
d. Obtain in TP1 the same voltage noted as kV-DOWN-SEL
(DOWN PT) by adjusting the Potentiometer R11.
e. Obtain in TP2 the same voltage noted as kV-UP-SEL (UP PT) by
adjusting the Potentiometer R14.
9. Select 70 kV (or the kV obtained in step-7.) and ABC mode.
10. Make a Fluoro exposure and check that the kV does not change.
11. Stop the Fluoro exposure and select 40 kV. Make a Fluoro exposure and
check that the kV value goes to 70 kV (or the kV obtained in step-7.)
±2 kV w ithout System problems.
12. Stop the Fluoro exposure and select 100 kV. Make a Fluoro exposure
and check that the kV value goes to 70 kV (or the kV obtained in step-7.)
±2 kV w ithout System problems.
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