OEC 9800C-Arm, Service Manual

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Vertical Column Lift
Power/Motor Relay PCB
The Power/Motor Relay PCB, located under the generator’s front cover, performs a variety of tasks, some of which are related to
movement of the Vertical Column Lift. The Power/Motor Relay PCB is basically a slave to the X-Ray Controller PCB, and
consists mostly of relays, LEDs, fuses, MOVs, resistors, capacitors, and other non-programmable devices.
The Power/Motor Relay PCB responds to signals from the X-Ray Controller PCB to power up the C-Arm in an orderly way.
When the C powers up correctly, the Power/Motor Relay PCB permits movement of the Vertical Column by performing the
following tasks:
•
Applies 115 VAC to Column Power Supply PS3 in response to command from X-Ray Controller PCB.
•
Responds to actuation of either Vertical Column Lift Button by ap36 Volts to the LIFT_UP_SW or LIFT_DN_SW
selector line on PS3. This causes the Vertical Column Lift to move up or down.
•
Responds to actuation of either Fast Stop Switch by inhibiting X-rays and halting movement of the Vertical Column Lift.
•
Serves as a passive distribution point for +12 and +24 Volts.
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Service Periodic Maintenance Contents Schematics Illustrated Parts Installation