Service manual

GE MEDICAL SYSTEMS
D
IRECTION 2300749-100, REVISION 2LOGIQ
TM
3 SERVICE MANUAL
Chapter 5 5-11
Section 5-5
Power Diagrams
5-5-1 Overview
The AC Power’s main tasks are to supply the various internal subsystems and to galvanically isolate
the scanner from the on site Mains Power System. To reduce inrush current, an inrush current limiter
board has been included in the AC box.
5-5-2 AC Power
Figure 5-9 AC Power Distribution Block Diagram
The mains cord has plugs in one side end. A male plug connects to the mains outlet on site.
The mains voltage is routed to the Main Circuit Breaker, located on the rear of the system.
The Main Circuit Breaker is of the auto fuse type, if for some reason the current grows to high, the switch
will automatically break the power.
From the Main Circuit Breaker, the AC power is routed via an Inrush Current Limiter to a internal outlet
connector for the Mains Transformer.
Power
Switch
&
Noise Filter
Inrush
limiter &
power relay
Power
Transformer
Secondary
AC output
control
circuit
AC Pwr Front Panel
AC Pwr Rear Panel
AC Pwr ATX (pc ps)
AC Pwr LVPS
AC Pwr HVPS
AC Pwr CRT(Monitor)
AC power Cuntrol Circuit
Per_ON
Rac_ON
SCL
SDA
5VDD
VCC
GND
ACI Assembly
AC Power
Supply
AC Mains
Input.
100VAC,/
115VAC/
230VAC
AC Pwr Modem