Acer EM250 - page 155

Chapter 5 145

Power board

Item Description

SW1 Power button

LED1 Power LED

Contents

Main Page Copyright Disclaimer Conventions Preface Page System Specifications 1 System Utilities 19 Machine Disassembly and Replacement 37 Troubleshooting 119 Jumper and Connector Locations 143 FRU (Field Replaceable Unit) List 149 Model Definition and Configuration 164 Test Compatible Components 173 Online Support Information 181 Index 183 Page System Specifications Chapter 1 Features Communication Privacy control Special keys and controls Power I/O interface System Block Diagram Diamondville SC DDRII-SO-DIMM Calistoga GSE FCBGA998 Memory BUS(DDRII) Your eMachines Notebook tour Front View Closed Front View Left View 12 3456 Right View Rear and Base View Indicators TouchPad Basics Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Hot Keys Special Keys Hardware Specifications and Configurations Page Page Page Page Page System Utilities Chapter 2 BIOS Setup Utility Navigating the BIOS Utility Information Main Security Page Page Boot Exit BIOS Flash Utility DOS Flash Utility Page Page Remove HDD/BIOS Password Utilities Page Miscellaneous Utilities Using Boot Sequence Selector Using DMITools Example 1: Read DMI Information from Memory Example 2: Write Product Name to EEPROM Using the LAN MAC Utility Page Page Machine Disassembly and Replacement Chapter 3 Disassembly Requirements Related Information General Information Pre-disassembly Instructions Disassembly Process External Module Disassembly Process External Modules Disassembly Flowchart Page Page Page Page Page Page Removing the 3G Module Page Main Unit Disassembly Process Main Unit Disassembly Flowchart Page Page Removing the Upper Cover Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Removing the Thermal Module Page Page Page Removing the LCD Module Page Page Page LCD Module Disassembly Process LCD Module Disassembly Flowchart Page Page Page Page Page Page Page Removing the Antennas Page Page Page Page Page Replacing the LCD Cable and Brackets Page Page Page Page Page Page Page Page Page Page Page Replacing the Thermal Module Replacing the Mainboard Page Page Page Page Page Page Page Replacing the Upper Cover Page Page Page Page Page Page Page Page Troubleshooting Chapter 4 Common Problems Power On Issue Computer Shuts down Intermittently No Display Issue No POST or Video Abnormal Video Display Random Loss of BIOS Settings LCD Failure Built-In Keyboard Failure TouchPad Failure Internal Speaker Failure Sound Problems Page Internal Microphone Failure Microphone Problems HDD Not Operating Correctly USB Failure (Rightside) Wireless Function Test Failure 3G Function Test Failure Switch Failure Thermal Units Failure Power Button Failure External Mouse Failure Other Failures Intermittent Problems Undetermined Problems Page POST Code Reference Tables Sec: Memory: BDS & Specific action: Each PEIM entry point used in 80_PORT Each Driver entry point used in 80_PORT Page Page Each SmmDriver entry point used in 80_PORT Jumper and Connector Locations Bottom View Page Page Clearing Password Check and BIOS Recovery Clearing Password Check Hardware Open Gap Description Steps for Clearing BIOS Password Check BIOS Recovery by Crisis Disk BIOS Recovery Boot Block: BIOS Recovery Hotkey: Steps for BIOS Recovery by USB Flash Crisis Disk: FRU (Field Replaceable Unit) List Chapter 6 eMachines eM250 Exploded Diagrams Main Assembly Rear Assembly Page Page LCD Assembly eMachines eM250 FRU List Page Page Page Page Page Screw List Page 165 Appendix A eMachines eM250 Series Model eM250-01G16 Appendix A 166 167 Appendix A Appendix A 168 169 Appendix A Model eM250-01G25i Appendix A 170 171 Appendix A Model eM250-02G16i Model eM250-02G25i Page Test Compatible Components Appendix B Windows 7 Environment Test Page Page Page Page Page Page Online Support Information Appendix C Page Index Numerics A B C K L M N O U V W