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Standby Mode Conditions And Descriptions - Acer 390 Series Service Manual

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ON MODE
Normal full-on operation
STANDBY MODE
The computer consumes very low power in standby mode. Data remain intact in the system
memory until battery is drained.
Warning: Unstored data is lost when you turn off the computer power in standby
mode or when the battery is drained.
Table 1-31

Standby Mode Conditions and Descriptions

Condition
The condition
There are two necessary conditions for the computer to enter standby mode:
to enter
Standby Mode
In this situation, the following are ways to enter standby mode:
Note: If the computer detects a PC I/O card installed in the PC card slots, the computer
"sleeps" (light green mode) to maintain your communications connection. It will not enter
standby mode.
The condition
of Standby
Mode
The condition
Any one of following activities will let system back to Normal Mode:
back to On
Mode
System Introduction
Heuristic Power Management Mode must be set to [ENABLED].
System Sleep State must be set to [STANDBY].
Pressing the sleep hot key Fn-F7
If the waiting time determined by the computer's HPM unit elapses without any
system activity.
Closing the display cover.
With the System Sleep State is set to [HIBERNATION], the computer also enters
standby mode if the hibernation file (Sleep Manager) is invalid or not present.
"Hard Disk Drive" is [Disabled] in System Security of BIOS SETUP.
"Hard Disk 0" is [None] in Basic System Configuration of BIOS SETUP.
Issue a beep.
Light standby LED with 1 Hz frequency.
Disable the mouse, serial and the parallel port.
The keyboard controller, HDD and VGA enter the standby mode.
Stop the CPU internal clock.
All the functions are disabled except the keyboard, battery low warning and modem
ring wake up from standby (if enabled).
Any keystroke (Internal KB or External KB)
Any active pointing device (internal or external, PS/2 or serial or USB)
Resume Timer matched
Opening the display cover if you closed the display cover to enter Standby mode.
Modem ring
Description
1-25

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