System Power Management; Local Power Management - NEC VERSA 6200MX Service Manual

1-24 Technical Information

System Power Management

NEC Versa system power management consists of the following operation modes. These
modes are:
T
Active Mode
with the default clock speed. The system continues to run at this speed unless
overwritten by the power management features.
T
Standby Mode
eliminates unnecessary power consumption when you operate the system on bat-
tery power or AC. Standby mode shuts down the LCD panel, providing privacy as
well as power savings.
T
Suspend Mode
shut down, and register values to be stored in RAM. System RAM is put into a
slow refresh state. A moon icon in the LCD Status Bar indicates that Suspend
mode is in effect.
The system resumes Active mode when you press the Suspend button, or the
system is set to resume at a certain time of day. Suspend mode lets you save
power without first saving the working data.
Press the Suspend button to enter Suspend mode when you need to be away from
the system for a short period of time and want to return to where you left off.
In addition, to quickly activate the Save to File feature, press the Fn and Suspend
button simultaneously. This shuts down the system, and saves the current working
data to a file.

Local Power Management

Use Auto Setup to select one of four power management settings for local devices. These
include Longest
Battery
Off. The power management levels are also available during AC operation. The NEC Versa
computer ships with Longest
Section 2 for specific procedures on using Auto Setup to select the power management
settings.
When set to Longest Battery Life, CMOS will set local device timeout values, a local stand-
by timeout value, and a suspend timeout value to ensure the longest battery life. The High-
est Performance setting selects CMOS values that will provide minimal energy savings and
a shorter battery life. The custom settings enable end-users to set the timeout values of their
choice. The Power Management Off selection terminates all power management timers.
In active mode, the system uses maximum power. It operates
The system switches automatically to Standby mode. This
Suspend mode causes the CPU power down, local devices to
Life, Highest Performance, Custom Setup, and Power Management
Life as the default power management setting. See
Battery