Canon CXDI-31, Service Manual

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3. CXDI-31 Imaging Unit
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2.2. PCB-AD
The PCB-AD receives power from the power supply unit in the DC/DC Conversion board
(DC-DC Converter), and generates the driving power at the Regulator to supply the power to
the LANMIT UNIT. It also converts the analog image signals input from the LANMIT
UNIT to digital signals at the A/D Converter to output them to the AD-IF Board.
2.3. CST AD-IF Board
The CST AD-IF Board can perform the following functions:
(1) LANMIT UNIT drive
Transmits the control signals to drive the LANMIT UNIT to the PCB-AD.
(2) Image signal reception
Receives digital image signals (14bit) from the PCB-AD.
(3) Image transmission
Transmits the digital image signals to the Control Station.
(4) X-ray synchronization
Synchronizes the X-ray generation and Sensor driving timings.
(5) X-ray detection(X-ray Monitor Unit
Detects the X-ray radiation through the X-ray Monitor Unit.
(6) Temperature check
Checks the temperature inside the Imaging Unit by using the Temperature Sensor IC.
(7) Grid detection
Every 20 ms, the Grid Detector Unit checks whether the fixed grid is placed on the Imaging
Unit or not. Grid On/Off is judged by five succeeding On/Off results.