Acer Aspire SA90, Service Manual

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27 Chapter 2
ACPI Suspend Type This item specifies the power saving modes for
ACPI function. S1(POS): The S1 sleep mode is a
low power state. In this state, no system context
(CPU or chipset) is lost and hardware maintains
all system context. S3 (STR): The S3 sleep
mode is s power-down state in which power is
supplied only to essential components such as
main memory and wake-capable devices and all
system context is saved to main memory. The
information stored in memory will be used to
restore the PC to the previous state when an
wake-up event occurs. S1&S3: Both S1 and S3
will be adopted.
S1 (POS)
S3 (STR)
S1&S3
Suspend Mode The CPU clock will be stopped and the video
signal will be suspended if no Power
Management events occur for a specified length
of time. Full power function will return when a
Power Management event is detected. Disabled
1/2/4/8/12/20/30/40 mins
1 Hour
Video Off Option This option is used to set video off option. The
setting values are always on, suspend> off,
susp,stby>off, and all modes>off. Always On
Suspend --> Off
Susp, Stby --> Off
All Modes --> Off
Video Off Method This item determines the manner in which the
monitor is blanked.
V/H SYNC+Blank: This selection will cause the
system to turn off the vertical and horizontal
synchronization ports and write blanks to the
video buffer. Blank Screen: This option only write
blanks to the video buffer. DPMS Supported:
Initial display power management signaling. Blank Screen
V/H SYNC+Blank
DPMS
Mode Use IRQ This setting names the interrupt request (IRQ)
line assigned to the modem (if any) on your
system. Activity of selected IRQ always awakens
the system. Auto
3 ,4,5,7,9,10,11
HDD Power Down This option is used to define the continuous HDD
idle time before the HDD enters power saving
mode. The setting values are disabled and 1 min
to 15 min. Disabled
1,2,3,4,5,6,7,8,9,10,11,12,13,
14,15 Min
Soft-off by PWR-BATTN This option is used to set the power down
method. This function is only valid for systems
using an ATX power supply. When ““nstant off” is
selected, press the power switch to immediately
turn off power. When “delay 4 sec” is selected,
press and hole the power button for four seconds
to turn off power. Instand Off
Delay 4 Sec.
PWRON After PWR-Fail This item allow user set the machine power state
when connect the AC power. "Always off" means
the machine is always off when power on;
"Always on" means the machine will always
power on when connect the AC power; "Pre-
State" means the machine state is the same as
the last state. Always Off
Always On
Pre-State
Parameter Description Options