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5
Power Management States
The following power management states are available for the Express Station 4
Series:
•
Unplugged
The Advanced Configuration and Power Interface (ACPI) specification refers to the
unplugged state as mechanical off. You can safely disassemble the Express
Station in this power management state.
In this state:
–
–
–
•
NOPOWER
The ACPI specification refers to the NOPOWER state as S5, or a soft-off state in
which the power supply remains active but delivers minimal power to key circuits
to detect a power button or wake-on-LAN event.
Do not disassemble the Express Station in this power management state. You
must disconnect the AC power cord from the system.
In this state:
–
–
–
–
–
•
ON
In this state:
–
–
–
Power Management State Changes
The following table describes the scenarios in which the power management state
changes for the Express Station 4 Series.
The AC power cord is not connected to a wall outlet.
The Operator LED is off.
The Operator LCD is blank.
The AC power cord is connected to a wall outlet.
The operating system and applications are not running.
The RAM contents are undefined.
The Operator LED is amber.
The Operator LCD is blank.
The operating system and POS application are in operation.
The RAM contents are maintained.
The Operator LED is blue.
5-1
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