Pwb-60Di Board; Pcb Ad/Ref Board; Led Board - Canon CXDI-60G Service Manual

1.2.5 PWB-60Di board

This board incorporates the CPU and other digital circuits for controlling the imaging unit by,
for instance, driving the sensors, temporarily storing the image data in the frame memory, and
outputting the image data using Ethernet.
Its main functions are described below.
(1) It controls the sensor drive, and imports the A/D-converted X-ray digital images.
(2) The communication, the X-ray digital image transferring with the Control PC through the
Power Box on the Ethernet.
(3) The synchronization between the X-ray generator and the image acquisition through the
Power Box.
(4) It controls the LED displays which indicate the statuses of the imaging unit.
(5) Detecting the Grid by using the Grid detecting sensor.
(6) It detects abnormal temperature rises using the temperature sensor, outputs errors and
restricts the sensor drive.

1.2.6 PCB AD/REF board

This board incorporates the A/D converter, which converts into digital data the analog signals
that correspond to the X-ray images output from the pixels on the sensor, and the analog circuits
which generate the reference voltages.
Its main functions are described below.
(1) Relaying the drive power to the amplifier IC
(2) Relaying the control signals to the amplifier IC
(3) Converting the analog signals from the amplifier IC into digital data
1.2.7 PWB-60 LED board
Connected to this board is the sensor cable S150-60 (imaging unit side), and the board itself has
a function for distributing the power from the power box to the PWB-60Di and PCB AD/REF
and a function for relaying the Ethernet and LVDS communication signals between the PWB-
60Di and PWB-60XRAY inside the power box. It also incorporates the LEDs for displaying the
status of the power supplied to the imaging unit, the operation status of the imaging unit and the
status of communication using Ethernet.
Its main functions are described below.
(1) Power supply relaying
(2) Slow start control when power is supplied
(3) LED displays which indicate the statuses of the imaging unit
(4) The connection of Grid detecting sensor.
(5) Single-point grounding of power supplied to top cover
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