GE
D
IRECTION
FQ091019, R
EVISION
2
V
IVID Q
N S
ERVICE
M
ANUAL
5-30
Section 5-6 - Power Supply System
Section 5-6
Power Supply System
5-6-1
Electrical Power
The Vivid q N systems can operate at between 100 and 240 V at 50/60 Hz via an
AC/DC converter which supplies a 20 V DC output and 4.5 amps.
5-6-2
Introduction
The power system comprises two main building blocks:
•
AC/DC Adaptor
- an external unit connected to the system's rear panel (see
).
•
DC/DC Power Supply Unit
- located inside and mounted to the bottom assembly, provides the
system with both Low Voltage and High Voltage power, and also enables recharging of the battery.
-
The Power Supply Unit controls the following main functions:
*
Input switching stage - selects between the external DC source and the internal battery
*
Back End Low Voltage power supply (LVPS)
*
Standby power supply
*
Front End Low Voltage power supply (LVPS)
*
Front End High Voltage power supply (HVPS)
*
Battery charger controlled by the Power Management controller
*
Control circuitry (used for monitoring, charger control and auxiliary functions).
*
The PS communicates with the host CPU via the SMBus
Содержание FQ000040
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