Acer 4252, 4552, 4552G

104 Chapter 3

Replacing the USB Board

1. Place the USB board onto the chassis.

2. Replace one (1) screw to secure the USB board.

3. Connect and lock the USB FFC to the USB board and mainboard connectors.

Step Size Quantity Screw Type

USB Board

Disassembly

M2.0*2.0 1

Contents

Main Page Copyright Disclaimer Conventions Preface Page System Specifications 1 System Utilities 31 Machine Disassembly and Replacement 47 Troubleshooting 113 Page Page System Specifications Chapter 1 Features Operating system CPU and chipset Graphics Aspire 4252 and 2552 Aspire 4552G Audio Storage Wireless and networking Privacy control Dimensions and weight Power adapter and battery Aspire 4252 and 4552 Input and control I/O interface Software Optional Items Warranty Environment 6Chapter 1 System Block Diagram A12 Audio CODEC NORTH BRIDGE RS880M Your Acer Notebook tour Top View Closed Front View Rear view Left View Right View Base View Indicators Touchpad Basics Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Hot Keys 16 Chapter 1 Hardware Specifications and Configurations Processor Specifications (Aspire 4252) Processor Processor Specifications (Aspire 4552/5442G) Page Page Page Page Page Page Page Page max. 24x CAV (max. 3.6 MB/s) max. 8X CAV (max. 10.8 MB/s) Page Page Page Page Page System Utilities Chapter 2 BIOS Setup Utility Navigating the BIOS Utility Information Main Security S Page Boot Exit Page BIOS Flash Utility DOS Flash Utility WinFlash Utility Remove HDD/BIOS Password Utilities Page 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 Machine Disassembly and Replacement Chapter 3 Disassembly Requirements Page Disassembly Process External Modules Disassembly Process External Modules Disassembly Flowchart Page Page Page Page Page Page Main Unit Disassembly Process Main Unit Disassembly Flowchart Removing the Lower Cover Component Overview Page Page Page Page Page Page Page Page Page Page Removing the Thermal Module Page Page Removing the Mainboard Page LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Replacing the Thermal Module Page Page Page Page Page Page Page Page Page Page Page Page Replacing the Lower Cover External Module Assembly Process Replacing the ODD Module 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 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 External Mouse Failure Other Failures Intermittent Problems Undetermined Problems Post Codes Page Page Page Jumper and Connector Locations Chapter 5 Top View Bottom View Clearing Password Check and BIOS Recovery Clearing Password Check 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 Acer Aspire 4252/4552/4552G Exploded Diagrams LCD Assembly Chassis Assembly Acer Aspire 4252/4552/4552G FRU List Page Page Page Page Page Page Screw List Model Definition and Configuration Appendix A Aspire 4252 Page Aspire 4552 Page Page Page Page Page Aspire 4552G Page Page Page Page Page Page Test Compatible Components Appendix B Page Page Page Online Support Information Appendix C Page Index B C D E R S T U W