Acer Aspire E650, Service Manual

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20 Chapter 1
Power Management Function (ACPI Support Function)
Device Standby Mode
T
Independent power management timer for hard disk drive devices (zero to 15 minutes,
time step = one minute).
T
Hard disk drive goes into Standby mode (for ATA standard interface).
T
Disable V-sync to control the VESA DPMS monitor.
T
Resume method: device activated (keyboard for DOS, keyboard & mouse for Windows).
T
Resume recovery time: three to five seconds.
Global Standby Mode
T
Global power management timer (two to 120 minutes, time step = 10 minutes).
T
Hard disk drive goes into Standby mode (for ATA standard interface).
T
Disable H-sync and V-sync signals to control the VESA DPMS monitor.
T
Resume method: return to original state by pushing external switch button, modem ring
in, keyboard and mouse for APM mode.
T
Resume recovery time: seven to 10 seconds.
Suspend Mode
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Independent power management timer (two to 120 minutes, time step = 10 minutes) or
pushing external switch button.
T
CPU goes into SMM.
T
CPU asserts STPCLK# and goes into the Stop Grant state.
T
LED on the panel turns amber colour.
T
Hard disk drive goes into SLEEP mode (for ATA standard interface).
T
Disable H-sync and V-sync signals to control the VESA DPMS monitor.
T
Ultra I/O and VGA chip go into power saving mode.
T
Resume method: return to original state by pushing external switch button, modem ring
in, keyboard and mouse for APM mode.
T
Return to original state by pushing external switch button, modem ring in and USB
keyboard for ACPI mode.
ACPI
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ACPI specification 1.0b
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S0, S1, S3 and S5 sleep state support
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Onboard device power management support
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Onboard device configuration support