Acer 4520 manual Bios Flash Utility, Bios Flash Precautions, Bios Recovery

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BIOS Flash Utility

The BIOS flash memory update is required under the following conditions:

When there are new versions of system programs

When new hardware options are installed

When the BIOS has been corrupted and you need to restore it

BIOS Flash Precautions

If you do not have a crisis recovery diskette at hand, create a Crisis Recovery Diskette in Windows XP of Vista before you use the flash utility.

Do not install memory-related drivers (XMS, EMS, DPMI) when you use the flash utility.

Place the computer in AC mode during the BIOS flash procedure. If the battery pack does not contain enough power to finish the BIOS flash, you may not able to boot the system because the BIOS is not completely loaded.

To flash the BIOS:

1.Prepare a bootable diskette.

2.Copy the flash utilities to the bootable diskette.

3.Boot the system from the bootable diskette. The flash utility will automatically be executed.

4.Follow the on-screen instructions to finish the flashing of the BIOS.

BIOS Recovery

If a BIOS flash procedure fails to complete, perform a BIOS recovery procedure by using the Crisis Recovery Diskette. During this procedure, the system will force the BIOS to enter a special BIOS block, called boot block, to boot up the system with minimum BIOS initialization.

To perform BIOS recovery:

1.Make sure the power cord is connected to the computer.

1.Attached a USB floppy drive to the computer.

2.Insert the Crisis Recovery Diskette into the floppy drive.

3.Press and hold the Fn+Esc keys, then press the power button .

This initialize the BIOS recovery process. The boot block BIOS will start to restore the failed BIOS code. Short beeps should be heard during this process. Once the process is completed, a long beep should be heard.

4.Turn off the computer once the process is complete.

5.Turn on the computer again and flash the BIOS. Refer to the previous instructions.

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Chapter 2

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Contents Acer TravelMate 4520 Notebook Computer Service Guide Revision History Copyright IIIConventions Service Guide Coverage Page Table of Contents System Troubleshooting ViiiTest Compatible Components Table of Contents Computing platform FeaturesChapter MemoryCommunications Display and graphicsAudio Keyboard and special keysSystem security and compliance features Status indicatorsPower subsystem InterfaceAccessories Physical specificationsEnvironmental specifications SoftwareTravelMate Tour Open Front ViewClose Front View Left View ODDRight View Rear ViewBase View Status Indicators WlanEasy-launch Keys Productivity Keys Phoenix TrustedCore Setup Utility System UtilitiesAccessing the Setup Utility Navigating Through the Setup Utility Information Setup Utility MenusUuid Main EnabledDisabled 128 MBSecurity Setting a system password To set a system passwordTo remove a system password To change a system passwordTo clear a lost password Page Boot To set the boot drive sequenceExit Bios Flash Precautions Bios Flash UtilityBios Recovery Launch Manager Select Start All Programs Launch ManagerChapter Stages of the Disassembly Process Disassembly ToolsEquivalent Torque Values Pre-disassembly Procedure System Screw ListExternal Modules Disassembly External Modules Disassembly FlowchartRemoving the SD Dummy Card Removing the PC Card Dummy CardRemoving the Battery Pack Removing the Lower Case Cover Removing the Memory ModulesRemoving the Wlan Board Removing and Dismantling the HDD Assembly SilverM3 x L4 Removing and Dismantling the ODD Assembly BlackDetach the ODD bracket from the module Chapter Removing the Processor Cooling Fan Removing the Heat Sink Removing the Processor Torque value 3 kgf-cm +/-15%Main Unit Disassembly Main Unit Disassembly FlowchartRemoving the Middle Cover Removing the KeyboardRemoving 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 Modem Board Removing the SpeakersChapter LCD Module Disassembly LCD Module Disassembly FlowchartRemoving the LCD Bezel Removing the Inverter Board Removing the LCD Module Hinges Removing the LCD PanelRemoving the LCD-CCD Cable Removing the LCD Panel Brackets Removing the Internal Microphone and the CCD Board Removing the Wlan Antennas System Troubleshooting Hardware Diagnostic ProcedureExternal CD-ROM Drive Check System Check ProceduresExternal Diskette Drive Check Keyboard or Auxiliary Input Device CheckMemory Check Power System CheckCheck the AC Adapter Check the Battery Pack Touchpad CheckPost Error Indicators Post Error MessageCmos Bios ROMDimm CPU IDSystem Error No Beep Post Beep Codes PostSetup Code Beeps Post Routine Description Code Beeps Post Routine Description Code Beeps Post Routine Description Index of Symptom-to-FRU Error Message LCD-related SymptomsMemory-related Symptom Related Symptoms Intermittent Problems Undetermined Problems Online Support Information System Block Diagram and Board Layout System Block DiagramSystem Board Layout Top ViewBottom 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 Appendix a Model a TravelMateModel B TravelMate Model C TravelMate K17RSHgst Model D TravelMateYEC Model E TravelMate 112 Appendix B Hardware Compatibility TestsAppendix B Appendix B 115 Games and Software Compatibility Tests Processor Appendix CSystem Controllers Memory HYMP564S64C HYMP512S64CPdif Video InterfaceAudio Interface USB InterfaceWlan Controller LAN ControllerCKIP, Tkip AC Adapter Battery PackUSB SADP-65KB DBE ADP-90SB Bbea LFHard Disk Drive MK1237GSXDVR-K17RS HldsGSA-T20N DVD-RWSystem Bios LCD InverterPower Management 126 Index Removing Part number 89 125 Wlan External FDD 66 keyboard 66 memory Index 133
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4520 specifications

The Acer 4520 laptop is a versatile and economically accessible device that caters to a wide variety of computing needs. Launched in the mid-2000s, this laptop became particularly popular among students and working professionals, thanks to its balance of performance, portability, and affordability.

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