AC Power Distribution
AC Power to the Battery Charger and Light
a. With the Workstation either on or off, 115VAC_PH enters the Power Signal Interface PCB, flows through fuse F5, Line
Filter LF1, and the inrush current limiter RT2, then leaves the PCB as 115VAC_PH_CH. This power then connects to the
Battery Charger PCB. In this manner, power is always available at the battery charger whether or not the Workstation or
C-Arm is operating.
b. The Battery Charger Indicator Lamp, mounted on the C-Arm Interface Panel, is energized by the 115VAC_PH_IN
power, as described in AC Power to PS1and PS2, above in this section. The significance of this connection is that the
Battery Charger Indicator Lamp will be illuminated at all times that the Workstation is correctly connected to facility
power. This is a safety feature, warning personnel that power exists in the C-Arm even when the Workstation is not
operating.
c. Whenever the Interconnect Cable is disconnected from the C-Arm, AC power is removed from the pins supplying the C-
Arm AC input power, for safety reasons. If the Interconnect Cable is plugged in while the Workstation is connected to
facility power, the C-Arm power is turned on after a short delay of about a second. This also applies if a complete
system is plugged into facility power.
WARNING: Full operating power (115 VAC single phase) exists at the intervening circuit
connections, even if the C-Arm failed to complete boot-up.
AC Power to the Stator
The 115VAC_PH_MTR, as described above, is under the control of Relay K10 on the Power/Motor Relay PCB. This power
divides two ways-one to the K15/K16 relays as described above. The other branch is conducted to the K1 relay on the same
PCB, which is controlled by circuitry explained in the Stator Power and Control section.
5
Service
Periodic Maintenance
Contents
Schematics
Illustrated Parts
Installation
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