GE Vivid 7, Руководство по обслуживанию

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GE H
EALTHCARE
D
IRECTION
FC091194, R
EVISION
11 V
IVID
7 S
ERVICE
M
ANUAL
Chapter 5 - Components and Functions (Theory) 5 - 129
5-11-2 AC Controller
5-11-2-1 General Description of the AC Controller
The AC Controller’s main task is to supply the various internal subsystems with AC power and to
galvanically isolate the scanner from the on-site Mains Power System.
An inrush current limiter reduce the peek input current when the unit is switched on. An EMI filter helps
to reduce EMI to acceptable levels.
The 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.
The mains cord has plugs in both ends. A female plug connects to the scanner and a male plug to the
wall mains outlet.
The mains voltage is routed from the mains power inlet at the rear of the system via an EMI filter to the
Mains Circuit Breaker, also located at the rear of the system. From the Mains Circuit Breaker, the AC
power is routed via an Inrush Current Limiter (titled: Inrush Limiter in
Figure 5-82 ) to an internal outlet
connector for the AC Transformer.
The Mains Circuit Breaker is of the auto fuse type. If for some reason the current grows to high, the
switch will automatically break the power.
Figure 5-82 AC Power Distribution
AC INLET BOX
TO OUTLET
M
INRUSH
LIMIT
Mains
switch
230V
ac
11
5V
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 #7
TO A14 ON INTERNAL I/O
POWER SUPPLY ON,
FAN SPEED CONTROL
CABLES INTERNAL IN
AC CONTROL MODULE
Cable #28
AC DISTRIBUTION PWB
Cable #31-2
Cable #13-2 Cable #31-3
Cable #31-1
Cable #30
Cable #31-4
FAN ASSEMBLY
COMPLETE