KaVo ORTHOPANTOMOGAPH OP 2D, Service Manual

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ORTHOPANTOMOGAPH OP 2D 19
2. Unit Description
Exposure logic
An exposure can only be taken when the unit is in the
ready state (the exposure ready light on the control
panel is on) and the exposure button is pressed and
held down.
The Generator board receives the correct kV and mA
references from the CPU. A few milliseconds after the
exposure button is pressed (Expsw) preheat is enabled
(Preh). After 800ms the exposure will start (ExpEna).
The tubehead will receive power from the Generator
board and the Generator board will also start to regulate
the mA and kV according to mA- and kV- feedback.