Hologic QDR 4500 - Control Panel Controller Board and C-Arm Interface Board

Section 2 - Functional Description
2-11
Table 2-7. TZ Drive Board/Pedestal Motors and Position Encoders
Interconnection Descriptions
Signal Description Pin
120V(A)_UP_LEFT AC voltage to the Left Pedestal motor to move the left
end of the Patient Table up.
JP5-1
120V(A)_DWN_LEFT AC voltage to the Left Pedestal motor to move the left
end of the Patient Table down.
JP5-2
120V(B)_LEFT AC line to the Left Pedestal motor. JP5-3
GND_PED Ground line to the Left Pedestal motor. JP5-4
120V(A)_UP_RIGHT AC voltage to the Right Pedestal motor to move the
right end of the Patient Table up.
JP4-1
120V(A)_DWN_RIGHT AC voltage to the Right Pedestal motor to move the
right end of the Patient Table down.
JP4-2
120V(B)_RIGHT AC line to the Right Pedestal motor. JP4-3
GND_PED Ground line to the Right Pedestal motor. JP4-4
+3.0VREF Precision positive voltage to Left/Right Pedestal
position encoder potentiometer.
JP3-1/JP2-1
(Position Signal) Left/Right pedestal position encoder wiper return
voltage.
JP3-3/JP2-3
-3.0VREF Precision negative voltage to Left/Right Pedestal
position encoder potentiometer.
JP3-4/JP2-4
CONTROL PANEL CONTROLLER BOARD
The Control Panel Controller board interfaces the Scanner’s Operator Control Panel to the
computer software allowing the software to determine the state of the Operator Control Panel
switches and to define the state of the various Operator Control Panel LEDs. The board is
located under the right side of the Patient Table assembly near the Operator Control Panel.
The Control Panel Controller communicates with the Operator's Console computer using the
asynchronous communications signals, ARD and ATD, of the communications bus, and the
system control signals SYSRESET, XRAY_LIGHT, and EMERGENCY. It also communicates
the state of the manual Table Up switch to the TZ board and it monitors the state of the C-Arm’s
Tilt switch.
Power
The Control Panel Controller board receives +7VDC from the Distribution board. The +7 is
reduced to +5VDC to power the circuitry on this board and is applied to the Operator Control
Panel to power its LEDs. A green LED, on this board, provides visual indication of the +5VDC
power (ON indicates the voltage is present).