User Manual (LX.PUS02.012)Table of ContentsSystem Specifications11Features11System Block Diagram15Your Acer Notebook tour16Front View16Closed Front View17Left View17Right View18Bottom View19Indicators19TouchPad Basics20Using the Keyboard21Lock Keys and embedded numeric keypad21Windows Keys22Hot Keys23Hardware Specifications and Configurations24System Utilities35BIOS Setup Utility35Navigating the BIOS Utility35Aspire 5251/5551G/5551 BIOS36Information36Main37Security38Boot41Exit42BIOS Flash Utilities43DOS Flash Utility44WinFlash Utility46Remove HDD/BIOS Password Utilities47Machine Disassembly and Replacement53Disassembly Requirements53Pre-disassembly Instructions54Disassembly Process55External Module Disassembly Process56External Modules Disassembly Flowchart56Removing the Battery Pack57Removing the SD Dummy Card58Removing the Optical Drive Module59Removing the Logic Lower Door61Removing the 3G Cover62Removing the DIMM Module63Removing the WLAN Module64Removing the Hard Disk Drive Module66Main Unit Disassembly Process68Main Unit Disassembly Flowchart68Removing the Keyboard69Removing the Upper Cover71Removing the Left Speaker Module75Removing the Right Speaker Module77Removing the Power Board79Removing the TouchPad Bracket80Removing the Card Reader Board82Removing the USB Board83Removing the Bluetooth Board85Removing the Mainboard86Removing the Thermal Module91Removing the CPU93LCD Module Disassembly Process94LCD Module Disassembly Flowchart94Removing the LCD Assembly95Removing the LCD Bezel98Removing the Camera Module99Removing the LCD Panel100Removing the LCD Brackets and LVDS Cable101Removing the Microphone Cable104Removing the Antennas106LCD Module Reassembly Procedure108Replacing the Antennas108Replacing the Microphone Cable110Replacing the LCD Brackets and LVDS Cable111Replacing the LCD Panel113Replacing the Camera Module114Replacing the LCD Bezel115Replacing the LCD Assembly116Main Module Reassembly Procedure119Replacing the CPU119Replacing the Thermal Module120Replacing the Mainboard122Replacing the Bluetooth Board125Replacing the USB Board126Replacing the Card Reader Board128Replacing the TouchPad Bracket129Replacing the Power Board131Replacing the Right Speaker Module132Replacing the Left Speaker Module133Replacing the Upper Cover134Replacing the Keyboard137Replacing the Hard Disk Drive Module138Replacing the WLAN Module139Replacing the DIMM Modules140Replacing the 3G Cover141Replacing the Logic Lower Door142Replacing the ODD Module143Replacing the SD Dummy Card144Replacing the Battery145Troubleshooting147Common Problems147Power On Issue148No Display Issue149Random Loss of BIOS Settings150LCD Failure151Built-In Keyboard Failure151TouchPad Failure152Internal Speaker Failure152HDD Not Operating Correctly154ODD Failure155Wireless Function Failure158Thermal Unit Failure158External Mouse Failure159Other Failures159Intermittent Problems160Undetermined Problems160Post Codes161Jumper and Connector Locations165Top View165Bottom View166USB/B Board167Power Board167CR/B Board168Clearing Password Check and BIOS Recovery169Clearing Password Check169Clear CMOS Jumper169BIOS Recovery by Crisis Disk170FRU (Field Replaceable Unit) List171Aspire 5251/5551G/5551 Exploded Diagrams172Main Assembly172Base Assembly173LED Assembly174Aspire 5251/5551G/5551 FRU List175Screw List176Model Definition and Configuration178Aspire 5251178Aspire 5551G180Aspire 5551189Test Compatible Components197Microsoft® Windows® 7 Environment Test198Online Support Information205Index207Size: 10.9 MBPages: 210Language: EnglishOpen manual
