eMachines D720 - page 129

Chapter 4 119

Modem Function Failure

If the internal Modem fails, perform the following actions one at a time to correct the problem. Do not replace a

non-defective FRUs:

Wireless Function Failure

If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace a non-

defective FRUs:

Contents

Main Page Copyright Disclaimer Conventions Preface Page System Specifications 1 System Utilities 21 Machine Disassembly and Replacement 41 Troubleshooting 107 Jumper and Connector Locations 129 FRU (Field Replaceable Unit) List 133 Model Definition and Configuration 142 Test Compatible Components 153 Online Support Information 161 Index 163 Page System Specifications Chapter 1 Features Operating System Platform Communication Privacy control Power subsystem Special keys and controls I/O interface Page Your Acer Notebook tour Front View Closed Front View Rear View Left View Right View Bottom View Indicators TouchPad Basics (with fingerprint reader) Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Hot Keys Special Key Using the System Utilities Acer GridVista (dual-display compatible) Hardware Specifications and Configurations Page Page Page Page System Utilities Chapter 2 BIOS Setup Utility Navigating the BIOS Utility Information Main Advanced Page Security Setting a Password Removing a Password Changing a Password Power Page Boot Exit BIOS Flash Utilities DOS Flash Utility Page Page Remove HDD/BIOS Password Utilities Page Page Page Machine Disassembly and Replacement Chapter 3 Disassembly Requirements General Information Pre-disassembly Instructions Disassembly Process External Module Disassembly Process External Modules Disassembly Flowchart Page Removing the Lower Covers Page Page Removing the WLAN Module Page Page Page Page Page Main Unit Disassembly Process Main Unit Disassembly Flowchart Removing the Switch Cover Page Page Page Page Page Page Removing the Upper Cover Page Page Page Page Removing the Speaker Modules Page Page Page Removing the Main Board Page Page Removing the Thermal Module Page LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Page Page Page Removing the LCD Brackets and FPC Cable Page Page Page Page Page Page Page Main Module Reassembly Procedure Replacing the CPU Replacing the Thermal Module Page Replacing the Modem Module Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Troubleshooting Chapter 4 Common Problems Power On Issue Computer Shutsdown Intermittently No Display Issue No POST or Video Abnormal Video Display Random Loss of BIOS Settings Page Page Sound Problems Internal Microphone Failure Microphone Problems HDD Not Operating Correctly ODD Failure ODD Not Operating Correctly Discs Do Not Play Discs Do Not Burn Properly Playback is Choppy Drive Not Detected Drive Read Failure Page Thermal Unit Failure External Mouse Failure Other Failures Intermittent Problems Undetermined Problems Post Codes 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 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 from USB Storage: FRU (Field Replaceable Unit) List Chapter 6 eMachines D720/D520 Exploded Diagrams Main Assembly LCD Panel eMachines D720/D520 FRU List Page Page Page Screw List Page Model Definition and Configuration Appendix A eMachines D720/D520 Series Model Description Page Page Page Page Page Appendix A 148 149 Appendix A Appendix A 150 151 Appendix A Appendix A 152 Test Compatible Components Appendix B Microsoft Windows Vista Environment Test Page Page Page Page Page Page Online Support Information Appendix C Page Index A B C D M N O P S