GE M
EDICAL
S
YSTEMS
D
IRECTION
FC091194, R
EVISION
02
V
IVID
7 / V
IVID
7 PRO S
ERVICE
M
ANUAL
Chapter 5 - Components and Functions (Theory)
5 - 35
5-10-2
Overview
The AC Power’s main tasks are to supply the various internal subsystems with AC power and to
galvanically isolate the scanner from the on site Mains Power System. To reduce inrush current, an
inrush current limiter as well as an EMI filter. Voltage to peripherals can be configured to either 115 VAC
or 230 VAC. The AC Power also controls and supplies the 20VAC needed by the systems cooling fan.
5-10-3
AC Power Distribution Box (PWB)
The mains cord has plugs in both ends. A female plug connects to the scanner and a male plug to the
mains outlet on site.
The mains voltage is routed via an EMI filter to the Mains Switch, located on the rear of the system.
The Mains Switch is of the auto fuse type, if for some reason the current grows to high, the switch will
automatically break the power.
From the Mains Switch, the AC power is routed via an Inrush Current Limiter (titled: Inrush Limiter in
Figure 5-16) to a internal outlet connector for the Mains Transformer.
Figure 5-16 AC Power Distribution
AC INLET BOX
TO OUTLET
M
INRUSH
LIMIT
Mains
switch
230V
ac
115V
ac
230Vac
20Vac
230 115
Fan
regulator
L
TRANSFORMER BOX
TO PERIPHERIALS (115 or 230 Vac)
TO MONITOR (115 Vac)
TO MODEM (230 Vac)
TO PC (230 Vac)
TO CARD RACK (230 Vac)
Cable #27
Cable #13
Cable #7
TO A14 ON INTERNAL I/O
POWER SUPPLY ON,
FAN SPEED CONTROL
CABLES INTERNAL IN AC CONTROL MODULE #27
AC DISTRIBUTION PWB
