Acer 4520 manual Setup

Page 83

Code

Beeps

POST Routine Description

 

 

 

2Eh

1-3-4-3

RAM failure on data bits xxxx of low byte

 

 

of memory bus

 

 

 

2Fh

 

Enable cache before system BIOS

 

 

shadow

 

 

 

30h

1-4-1-1

RAM failure on data bits xxxx of high byte

 

 

of memory bus

 

 

 

32h

 

Test CPU bus-clock frequency

 

 

 

33h

 

Initialize Phoenix Dispatch Manager

 

 

 

36h

 

Warm start shut down

 

 

 

38h

 

Shadow system BIOS ROM

 

 

 

3Ah

 

Autosize cache

 

 

 

3Ch

 

Advanced configuration of chipset

 

 

registers

 

 

 

3Dh

 

Load alternate registers with CMOS

 

 

values

 

 

 

42h

 

Initialize interrupt vectors

 

 

 

45h

 

POST device initialization

 

 

 

46h

2-1-2-3

Check ROM copyright notice

 

 

 

48h

 

Check video configuration against CMOS

 

 

 

49h

 

Initialize PCI bus and devices

 

 

 

4Ah

 

Initialize all video adapters in system

 

 

 

4Bh

 

QuietBoot start (optional)

 

 

 

4Ch

 

Shadow video BIOS ROM

 

 

 

4Eh

 

Display BIOS copyright notice

 

 

 

50h

 

Display CPU type and speed

 

 

 

51h

 

Initialize EISA board

 

 

 

52h

 

Test keyboard

 

 

 

54h

 

Set key click if enabled

 

 

 

58h

2-2-3-1

Test for unexpected interrupts

 

 

 

59h

 

Initialize POST display service

 

 

 

5Ah

 

Display prompt “Press F2 to enter

 

 

SETUP”

 

 

 

5Bh

 

Disable CPU cache

 

 

 

5Ch

 

Test RAM between 512 and 640 KB

 

 

 

60h

 

Test extended memory

 

 

 

62h

 

Test extended memory address lines

 

 

 

64h

 

Jump to User Patch1

 

 

 

66h

 

Configure advanced cache registers

 

 

 

67h

 

Initialize Multi Processor APIC

 

 

 

68h

 

Enable external and CPU caches

 

 

 

69h

 

Setup System Management Mode (SMM)

 

 

area

 

 

 

6Ah

 

Display external L2 cache size

 

 

 

6Bh

 

Load custom defaults (optional)

 

 

 

6Ch

 

Display shadow-area message

 

 

 

Chapter 4

73

Image 83
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 Uuid Setup Utility MenusInformation 128 MB EnabledDisabled MainSecurity To set a system password Setting a system passwordTo clear a lost password To change a system passwordTo remove a system password Page To set the boot drive sequence BootExit Bios Recovery Bios Flash UtilityBios Flash Precautions Select Start All Programs Launch Manager Launch ManagerChapter Equivalent Torque Values Disassembly ToolsStages of the Disassembly Process 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 CheckCheck the AC Adapter Power System CheckMemory Check 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 TravelMateYEC Model D TravelMateHgst Model E TravelMate 112 Hardware Compatibility Tests Appendix BAppendix B Appendix B 115 Games and Software Compatibility Tests System Controllers Appendix CProcessor HYMP564S64C HYMP512S64C MemoryUSB Interface Video InterfaceAudio Interface PdifCKIP, Tkip LAN ControllerWlan Controller 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

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.

One of the standout features of the Acer 4520 is its durable yet lightweight design, which weighs around 2.6 kg. This makes it easy to carry around, whether for commuting to school or taking it to a coffee shop for remote work. The 15.4-inch screen with a resolution of 1280 x 800 pixels provides a decent visual experience, suitable for both productivity tasks and media consumption.

In terms of performance, the Acer 4520 is typically equipped with AMD processors, such as the AMD Turion X2 or Athlon series, which are designed to deliver competent multitasking capabilities. The laptop usually comes with 1GB or 2GB of RAM, allowing users to run essential applications smoothly. Additionally, the device features a 120GB to 250GB hard drive, providing ample storage space for documents, photos, and multimedia files.

Connectivity is another strong point of the Acer 4520. It comes with a variety of ports, including USB 2.0, VGA, and audio jacks, as well as a built-in webcam for video conferencing and social interaction. The laptop supports Wi-Fi connectivity, enabling users to access the internet wirelessly, which is essential for both personal and professional use.

The Acer 4520 also integrates several multimedia features, including a DVD-RW drive for reading and writing optical discs, along with built-in speakers that deliver sound decent enough for casual listening. Additionally, it supports Acer's own PowerSmart technology, which helps manage battery life and optimize performance, allowing users to prolong their usage time during on-the-go scenarios.

Furthermore, the laptop offers a user-friendly operating system, commonly shipped with Windows Vista or later versions, providing a familiar environment for users. Overall, the Acer 4520 stands out with its balanced range of features, reliability, and economical price point, making it an attractive option for budget-conscious individuals seeking a capable laptop for everyday tasks. This blend of utility and performance ensures that the Acer 4520 remains relevant for basic computing needs even years after its initial release.