Acer 4020 manual Code Beeps Post Routine Description

Page 78

Code

Beeps

POST Routine Description

 

 

 

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

 

 

 

6Eh

 

Display possible high address for UMB

 

 

recovery

 

 

 

70h

 

Display error messages

 

 

 

72h

 

Check for configuration errors

 

 

 

76h

 

Check for keyboard errors

 

 

 

7Ch

 

Set up hardware interrupt vectors

 

 

 

7Eh

 

Initialize coprocessor if present

 

 

 

80h

 

Disable onboard Super I/O ports and IRQs

 

 

 

81h

 

Late POST device initialization

 

 

 

82h

 

Detect and install external RS232 ports

 

 

 

83h

 

Configure non-MCD IDE controllers

 

 

 

84h

 

Detect and install external parallel ports

 

 

 

85h

 

Initialize PC-compatible PnP ISA devices

 

 

 

86h

 

Re-initialize onboard I/O ports

 

 

 

87h

 

Configure Motherboard Configurable Devices

 

 

(optional)

 

 

 

88h

 

Initialize BIOS Area

 

 

 

89h

 

Enable Non-Maskable Interrupts (NMIs)

 

 

 

8Ah

 

Initialize Extended BIOS Data Area

 

 

 

8Bh

 

Test and initialize PS/2 mouse

 

 

 

8Ch

 

Initialize floppy controller

 

 

 

72

Chapter 4

Image 78
Contents Acer TravelMate 4020 Series Revision History Copyright DisclaimerConventions Screen MessagesPreface Page Features ChapterStorage Battery Mainboard Placement Top ViewRear View Description Block Diagram 5V / 3.3VOutlook View Open ViewDescription Front Panel Icon DescriptionLeft View Right View Power jack Connects to an AC adapter External display port Bottom View Indicators Easy-launch buttons Touchpad Touchpad BasicsLock Key Description Using the KeyboardLock keys and embedded numeric keypad Desired action Num Lock on Num Lock offHot Keys Key DescriptionSpecial Keys Hot Key Function DescriptionEuro symbol US dollar signUsing System Utilities Acer eManagerLaunch Manager System Board Major Chips Hardware Specifications and ConfigurationsProcessor Specification L2 CacheModem/Bluetooth Interface Specification System Memory SpecificationLAN Interface Specification USB Port SpecificationPcmcia Port Specification Keyboard SpecificationLCD 15.4 Wxga Specification Battery SpecificationPackage configuration Mechanical SpecificationsAC Adapter Specification SpecificationsMechanical Specification Input RequirementsDynamic Output Characteristics Output Ratings CV modeOutput Ratings CC mode Power Management Acpi ModeEnvironmental Requirements Dimensions and Weight DetailsLogical Configuration Data Storage PhysicalToshiba Ambient Temperature Nominal Power RequirementsPhysical & Environmental Specs Dimensions/Weight Reliability Characteristics Error RatesPreventive Maintenance Bios Setup Utility System UtilitiesInformation Parameter DescriptionUuid Advanced Security Boot Exit MainF12 Boot Menu Security Boot Exit AdvancedSecurity Parameter Description OptionCharacters 0-9,A-Z not case sensitive Set Supervisor/User PasswordDisabled EnterSetup Notice Changes have been saved Continue Boot ExitInfo Main Advanced Security Boot ExitChapter Machine Disassembly and Replacement General Information Before You BeginChapter Disassembly Procedure Flowchart Screw List DescriptionRemoving the Battery Pack Removing the Memory and the Wireless LAN Card Removing the HDD ModuleRemoving the Thermal Module and CPU Removing the ODD Module Removing the LCD Module Disassembling the Main Unit Disassembling the Upper Case Assembly Disassembling the Lower Case Assembly Chapter Disassembling the LCD Module Chapter Disassembling the External Modules Disassembling the Optical Drive ModuleChapter Troubleshooting External CD-ROM Drive Check System Check ProceduresExternal Diskette Drive Check Keyboard or Auxiliary Input Device CheckPower System Check Memory checkTouchpad Check Power-on Self-Test Error Messages Index of Error Messages Error Code ListError Message List CPU ID No beep Error Messages FRU/Action in Sequence Phoenix Bios Beep Codes Code Beeps Post Routine DescriptionCode Beeps Post Routine Description Chapter Code Beeps Post Routine Description Indicator-Related Symptoms Index of Symptom-to-FRU Error MessageLCD-Related Symptoms Power-Related SymptomsSpeaker-Related Symptoms PCMCIA-Related SymptomsMemory-Related Symptoms Power Management-Related SymptomsPeripheral-Related Symptoms Keyboard/Touchpad-Related SymptomsModem-Related Symptoms Intermittent Problems Undetermined Problems DimmChapter Jumper and Connector Locations Top ViewRear View VGA RAM RTC Jumper FRU Field Replaceable Unit List Exploded Diagram Illustration Part Name Description Acer P/N Touch PAD Board ZL1A Touch PAD Lower Case W ZL3A Base Assy W/O DVD/CDRW Combo ZI6 Combo SBW-242C DVD Dual Drive ZL6 DVD Rwdual ZL1A K/B EUGO-U/I LCD Cable 15 ZL1A 15 LCD Cabel LCD Module 15 ZL1 15 LCD SXGA+ LCD Module 15.4 ZL1A 15.4 LCD Wxga Samsung LTN154X3 Samsung Panel UMA W/PCMCIA Slot CPU Memory Memory DDR333 Name Plate ZL3A Name Plate S Screw M2.5*4L-BZN ET2S Screw 100 Chapter