Acer Veriton 5200D Veriton 5200D Service Guide - Page 33

Power Management Functions Device Standby Mode ! Independent power management timer for hard disk drive devices (0-15 minutes, time step=1 minute). ! Hard disk drive goes into Standby mode (for ATA standard interface). ! Disable V-sync to control the VESA DPMS monitor. ! Resume method: device activated (Keyboard for DOS, keyboard & mouse for Windows). ! Resume recovery time: 3-5 sec. Global Standby Mode ! Global power management timer (2-120 minutes, time step=10 minute). ! Hard disk drive goes into Standby mode (for ATA standard interface). ! Disable H-sync and V-sync signals to control the VESA DPMS monitor. ! Resume recovery time: 7-10 sec. Suspend Mode ! Independent power management timer (2-120 minutes, time step=10 minutes) or pushing external switch button ! CPU goes into SMM. ! CPU asserts STPCLK# and goes into the Stop Grant State. ! LED on the panel turns amber color. ! Hard disk drive goes into SLEEP mode (for ATA standard interface). ! Disable H-sync and V-sync signals to control the VESA DPMS monitor. ! Return to original state by pushing external switch button. Suspend to RAM ! The system context is maintained in system memory ! Power is shut to non-critical circuits. ! Memory is retained, and refreshes continually. ! All clocks shut except RTC. ! Return to original state by pushing external switch button & "PME" events at ACPI mode. 24 Chapter 1