Acer 8431 Peripheral-Related Symptoms, Keyboard/Touchpad-Related Symptoms, Modem-Related Symptoms

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Peripheral-Related Symptoms

Symptom / Error	Action in Sequence
System configuration does not match the	Enter BIOS Setup Utility to execute “Load
installed devices.	Default Settings”, then reboot system.
	Reconnect hard disk/CD-ROM/diskette drives.

External display does not work correctly.	Press Fn+F5, LCD/CRT/Both display
	switching.
	System board

USB does not work correctly.	System board

Print problems.	Ensure the “Parallel Port” in the “Onboard
	Devices Configuration” of BIOS Setup Utility is
	set to Enabled.
	Onboard Devices Configuration
	Run printer self-test.
	Printer driver
	Printer cable
	Printer
	System Board

Serial or parallel port device problems.	Ensure the “Serial Port” in the Devices
	Configuration” of BIOS Setup Utility is set to
	Enabled.
	Device driver
	Device cable
	Device
	System board

Keyboard/Touchpad-Related Symptoms

Symptom / Error	Action in Sequence
Keyboard (one or more keys) does not work.	Reconnect the keyboard cable.
	Keyboard
	System board

Touchpad does not work.	Reconnect touchpad cable.
	Touchpad board
	System board

Modem-Related Symptoms

Symptom / Error	Action in Sequence
Internal modem does not work correctly.	Modem phone port
	modem combo board
	System board

NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined Problems” on page 68.

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Chapter 4

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Contents TravelMate 8471/8431 Series Service Guide Revision History Copyright Conventions Preface Page Table of Contents Jumper and Connector Locations Features ChapterPower subsystem Environment DiagramBlockSystem CRTBoard Layout Top ViewBottom View Your Acer Notebook tour HDD Closed Front View Rear viewLeft View Right ViewBase view Touchpad Basics with fingerprint reader Touchpad basics with two-click buttons Using the Keyboard Lock Keys and embedded numeric keypadWindows Keys Hot Keys Using the system utilities Acer Bio-Protection only for certain modelsAcer GridVista dual-display compatible Acer Backup Manager Power management Acer eRecovery ManagementRestore Burn backup discsRestore Windows Vista from backup discs Hardware Specifications and Configurations Audio Interface Bluetooth InterfaceHard Disk Drive Interface LCD panelButton Power ManagementKeyboard SoftwarePhysical Characteristics LED Status IndicatorSecurity Features Bios Setup Utility System UtilitiesInvoking Bios Setup InformationMain Post Security Setting a Password Removing a Password Boot Exit Bios Flash Utility Machine Disassembly and Replacement General Information Before You BeginLCM module disassembly flow chart Disassembly Procedure FlowchardMain unit disassembly flow chart Removing the Battery Pack Removing the HDD and RAM Remove the screw on RAM cover and remove RAM Remove the wireless card Remove ODD Chapter Remove Keyboard Remove FFC of main board and sub board Remove the FFC and screw on the Wireless board M2*54.5D*0.8T Remove Panel M2*44.5D*0.5T Disassembling the External Module Disassembling the HDD ModuleTroubleshooting 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 Post Error Message Error Message List Index of Error MessagesError Code List Cmos CRT InsydeH2O Bios Beep Codes Post device initialization 8Ah Initialize Extended Bios Data Area PnPnd dual Cmos optional 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 SymptomsSymptom / Error Action in Sequence Modem-Related Symptoms Peripheral-Related SymptomsKeyboard/Touchpad-Related Symptoms Intermittent Problems Undetermined Problems Jumper and Connector Locations Top ViewBottom View FRU Field Replaceable Unit List TravelMate 8471/8431 Exploded Diagram Chapter Chapter TravelMate 8471/8431 FRU List AccessoryBattery AdapterLAN Intel Wlan 512AGHMWG Cable Camera CASE/COVER/BRACKET Assembly DVD RW Drive HDD/SSD Keyboard LCD Microphone Speaker Chapter