Acer 4520 manual Power Management

Page 135

Power Management

Item

Specification

 

 

Power management standard

ACPI 1.0b/2.0/3.0

 

 

System power management states

Mechanical Off (G3) – All system devices are turned off

 

completely.

 

Soft Off (G2/S5) – OS initiated shutdown. All devices

 

in the system are turned off completely.

 

Working (G0/S0) – Individual devices such as the

 

processor and hard disk may be power managed in

 

this state.

 

S3 Sleeping State

 

CPU set power down

 

VGA suspend

 

Audio power down

 

Hard disk power down

 

Optical drive power down

 

Card reader function suspend

 

S4 Sleeping State (hibernation mode) – All system

 

states and data are saved onto disk before power

 

shutdown. The same session is restored the next time

 

the system is powered on.

 

 

Processor power management states

To further conserve power in a Working state, the

 

processor enters a low-power state when the OS is idle.

 

C1 state – CPU halt instruction

 

C2 state – CPU stop grant state

 

C3 state – CPU stop clock state

 

 

Appendix C

125

Image 135
Contents Acer TravelMate 4520 Notebook Computer Service Guide Revision History III CopyrightConventions Service Guide Coverage Page Table of Contents Viii System TroubleshootingTest Compatible Components Table of Contents Memory FeaturesChapter Computing platformKeyboard and special keys Display and graphicsAudio CommunicationsInterface Status indicatorsPower subsystem System security and compliance featuresSoftware Physical specificationsEnvironmental specifications AccessoriesOpen Front View TravelMate TourClose Front View ODD Left ViewRear View Right ViewBase View Wlan Status IndicatorsEasy-launch Keys Productivity Keys System Utilities Phoenix TrustedCore Setup UtilityAccessing the Setup Utility Navigating Through the Setup Utility Setup Utility Menus InformationUuid 128 MB EnabledDisabled MainSecurity To set a system password Setting a system passwordTo change a system password To remove a system passwordTo clear a lost password Page To set the boot drive sequence BootExit Bios Flash Utility Bios Flash PrecautionsBios Recovery Select Start All Programs Launch Manager Launch ManagerChapter Disassembly Tools Stages of the Disassembly ProcessEquivalent Torque Values System Screw List Pre-disassembly ProcedureExternal Modules Disassembly Flowchart External Modules DisassemblyRemoving the PC Card Dummy Card Removing the SD Dummy CardRemoving the Battery Pack Removing the Memory Modules Removing the Lower Case CoverRemoving the Wlan Board Silver Removing and Dismantling the HDD AssemblyM3 x L4 Black Removing and Dismantling the ODD AssemblyDetach the ODD bracket from the module Chapter Removing the Processor Cooling Fan Removing the Heat Sink Torque value 3 kgf-cm +/-15% Removing the ProcessorMain Unit Disassembly Flowchart Main Unit DisassemblyRemoving the Keyboard Removing the Middle CoverRemoving the LCD Module Chapter Page M2.5 x L8 BZN+NYLOK Removing the Upper Case M2.5 x L4 BZN+NYLOK Removing the LED Board Removing the Fingerprint and Touchpad Boards Remove the screws securing the fingerprint board bracket Removing the Card Reader Board Removing the Bluetooth Board Removing the System Board Removing the Speakers Removing the Modem BoardChapter LCD Module Disassembly Flowchart LCD Module DisassemblyRemoving the LCD Bezel Removing the Inverter Board Removing the LCD Panel Removing the LCD Module HingesRemoving the LCD-CCD Cable Removing the LCD Panel Brackets Removing the Internal Microphone and the CCD Board Removing the Wlan Antennas Hardware Diagnostic Procedure System TroubleshootingKeyboard or Auxiliary Input Device Check System Check ProceduresExternal Diskette Drive Check External CD-ROM Drive CheckPower System Check Memory CheckCheck the AC Adapter Touchpad Check Check the Battery PackPost Error Message Post Error IndicatorsCPU ID Bios ROMDimm CmosSystem Error No Beep Post Post Beep CodesSetup Code Beeps Post Routine Description Code Beeps Post Routine Description Code Beeps Post Routine Description LCD-related Symptoms Index of Symptom-to-FRU Error MessageMemory-related Symptom Related Symptoms Intermittent Problems Undetermined Problems Online Support Information System Block Diagram System Block Diagram and Board LayoutTop View System Board LayoutBottom View System Switch FRU Field Replaceable Unit List Aspire 5910 Exploded Diagram TravelMate 4520 FRU List Cables Chapter Fan Hard Disk Drive Keyboard Chapter Keyboard TM Mechanical parts Chapter Memory Optical Disc Drive Power-related Processor Chapter Screws Miscellaneous Audio-related Boards Chapter Cables Fan Hard Disk Drive 100 Chapter Chapter 101 LCD Panel 102 Chapter Chapter 103 Memory Optical Disc Drive 104 Chapter Chapter 105 Screws Miscellaneous 106 Chapter Model a TravelMate Appendix aModel B TravelMate K17RS Model C TravelMateModel D TravelMate HgstYEC Model E TravelMate 112 Hardware Compatibility Tests Appendix BAppendix B Appendix B 115 Games and Software Compatibility Tests Appendix C ProcessorSystem Controllers HYMP564S64C HYMP512S64C MemoryUSB Interface Video InterfaceAudio Interface PdifLAN Controller Wlan ControllerCKIP, Tkip SADP-65KB DBE ADP-90SB Bbea LF Battery PackUSB AC AdapterMK1237GSX Hard Disk DriveDVD-RW HldsGSA-T20N DVR-K17RSLCD Inverter System BiosPower Management 126 Index Removing Part number 89 125 Wlan External FDD 66 keyboard 66 memory Index 133
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4520 specifications

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