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521 manual Pull the Wlan module out and away Chapter
Models:
521
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Specs
System Block Diagram
Replacement Requirements
Warranty
Dimension
Wireless LAN
Common Problems
Setup of 2D polygons and lines
Pre-disassembly Instructions
Removing the Battery Pack
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5.
Pull the WLAN module out and away.
Chapter 3
57
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Contents
Aspire one 521 Series Service Guide
Revision History
Copyright
Conventions
Preface
Page
Table of Contents
111
AO521
Table of Contents
Chapter
Features
Communication
Storage subsystem
Audio subsystem
Optical Media Drive
Special Keys and Controls
Dimensions and Weight
Power Adapter and Battery
Accessories
Environment
Warranty
AMD ASB2 CPU
System Block Diagram
Icon Description
Top View
Left View
Closed Front View
Right View
Base View
Indicators
Icon Function Description
Function Left Button Right Button Main TouchPad
TouchPad Basics
Lock key Description
Using the Keyboard
Desired access Num Lock on Num Lock off
Lock Keys and embedded numeric keypad
Key Description
Windows Keys
Hotkey Icon Function Description
Hot Keys
Special Keys
Euro symbol
US dollar sign
North Bridge Chipset Specification
Hardware Specifications and Configurations
Processor Specification
Processor Specifications
Setup of 2D polygons and lines
Item NB Specification
Item NB Specification
Normal operation
Item NB Specification
Southbridge Chipset Specification
Item SB Specification
USB
System Memory Specification
LCD Specification
Hard Disk Drive Interface Specification
Lvds
Bluetooth Specification
Media Card Reader Specification
Audio Codec and Amplifier Specification
LAN Interface Specification
Keyboard Specification
Battery Specification Cell
Wireless LAN Specification
Interface Specifications
Navigating the Bios Utility
Bios Setup Utility
Parameter Description
Information
Parameter Description Format/Option
Main
Parameter Description Option
Setting a Password
Disabled or
Security
Removing a Password
Enter New Password
Continue
Changing a Password
Information Main Security Boot Exit
Boot
Exit Exit Saving Changes
Exit
Bios Flash Utility
DOS Flash Utility
Page
WinFlash Utility
Remove HDD Password
Remove HDD/BIOS Password Utilities
Select Enter Unlock Password and press Enter
Removing Bios Passwords
Using DMITools
Using Boot Sequence Selector
Miscellaneous Utilities
Example 1 Read DMI Information from Memory
Using the LAN MAC Utility
Replacement Requirements
Disassembly Requirements
Related Information
Pre-disassembly Instructions
Main Screw List Quantity Acer Part Number
Disassembly Process
External Modules Disassembly Flowchart
External Module Disassembly Process
Screw List Step Quantity
Removing the Battery Pack
Removing the Dummy Card
Step Screw Quantity Screw Type
Removing the Base Door
Removing the Dimm Module
Removing the Hard Disk Drive Module
Chapter
Step Screw Quantity Screw Type
Removing the Wlan Module
Pull the Wlan module out and away Chapter
Removing the 3G Module
Step Screw Quantity Screw Type 3G Module Disassembly
Pull the 3Gmodule out and away Chapter
Main Unit Disassembly Flowchart
Main Unit Disassembly Process
Step Screw Quantity
Removing the Keyboard
Page
Removing the Upper Cover
Remove the seventeen 17 screws in the upper cover
Chapter
Removing the Touchpad Board
Removing the Bluetooth Module
Removing the LCD Module
Remove two 2 screws from the hinge
Removing the Mainboard
Chapter
Removing the Thermal Module
Lift the thermal module away from the main board
Removing the Speakers
Step Screw Quantity Screw Type Speaker Disassembly
Lift the speakers clear of the lower cover
LCD Module Disassembly Flowchart
LCD Module Disassembly Process
Step Screw Quantity Screw Type Remove LCD Bezel M2.5*4
Removing the LCD Bezel
Page
Removing the Camera Board
Step Screw Quantity Screw Type Remove LCD Panel M2x3
Removing the LCD Panel
Chapter
Removing the LCD Cover Hinges
Replacing the LCD Cover Hinges
LCD Reassembly Procedure
Replacing the LCD FPC Cable
Replacing the LCD Panel
Step Screw Quantity Screw Type LCD Panel Assembly
Replacing the Camera Board
Replacing the LCD Bezel
Step Screw Quantity Screw Type Replace LCD Bezel M2.5*4
Replacing the Speakers
Main Unit Reassembly Process
Page
Replacing the Thermal Module
Replacing the Mainboard
M2.5x5
Replacing the LCD Module
Place the Lvds cable in the hinge channel as shown Chapter
Replacing the Bluetooth Module
Replacing the Touchpad Board
Replacing the Upper Cover
Step Size Quantity Screw Type
100 Chapter
Replacing the Keyboard
Replacing the Hard Disk Drive
Page
Replacing the Dimm Module
Replacing the 3G Module
Replacing the Wireless LAN Module
Connect the two 2 Wlan antennas Chapter 107
Replace the Dummy Card
Replacing the Base Door
Replacing the Battery
110 Chapter
Symptoms Verified Go To
Common Problems
Computer Shuts down Intermittently
Power On Issue
No Post or Video
No Display Issue
Abnormal Video Display
Random Loss of Bios Settings
LCD Failure
Built-In Keyboard Failure
TouchPad Failure
Internal Speaker Failure
Sound Problems
Select Set up microphone
Microphone Problems
Internal Microphone Failure
Select Startup Repair
HDD Not Operating Correctly
Other Failures
Select Repair your computer
Undetermined Problems
Intermittent Problems
Post Code Range Post Routine Description
Post Code Reference Tables
Code Beeps Post Routine Description
Code Beeps Post Routine Description
124 Chapter
Code Beeps For Boot Block in Flash ROM
126 Chapter
Mainboard Top View
Jumper and Connector Locations
Mainboard Bottom View
Bios Recovery Hotkey
Bios Recovery
Bios Recovery by Crisis Disk
Bios Recovery Boot Block
130 Chapter
FRU Field Replaceable Unit List
Exploded Diagrams
Description Part Number
Main Assembly
Chapter 133
LCD Assembly
Category Description Adapter
FRU List
Category Description
Category Description LCD Module
Mainboard
Screw List
Appendix a
Model Definition and Configuration
Model Acer Part No Country Description
AO521
TWN Gctwn
AO521 LU.SBS0D.056
AO521 LU.SBS0D.041
AO521 LU.SBS0D.024
AO521 LU.SBS0D.007
Memory Chip
Model Acer Part No
AO521 LU.SBT0D.007
105Hk 05B
AO521 LU.SBS0D.030
AAK32
Media Processor
Model Acer Part No Memory
1GB 2GB
152
N250G 105Dk B5.4KS AO521
154
HDD ODD
Media Processor 1GB 2GB
AO521-12BHk
158
Appendix B
Modem
Keyboard
SB Chipset
WiFi Antenna
Wireless LAN
Type Description NB Chipset
162
Appendix C
Online Support Information
164
Index
Block Diagram
167
