Acer AO725 User manual

Aspire One 725
SERVICEGUIDE

ii
Revision History
Refer to the table below for the updates made to this service guide.
Service guide files and updates are available on the ACER/CSD Website. For more
information, go to http://csd.acer.com.tw.The information in this guide is subject to
change without notice.
Copyright
Copyright © 2012 by Acer Incorporated. All rights reserved. No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated
into any language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written
permission of Acer Incorporated.
Disclaimer
The information in this guide is subject to change without notice.
There are no representations or warranties, either expressed or implied, with respect to
the contents hereof and specifically disclaims any warranties of merchantability or
fitness for any particular purpose. The software described in this manual is sold or
licensed "as is". Should the programs prove defective following their purchase, the
buyer (not the manufacturer, distributor, or its dealer) assumes the entire cost of all
necessary servicing, repair, and any incidental or consequential damages resulting from
any defect in the software.
Date Chapter Updates

iii
Conventions
The following conventions are used in this manual:
WARNING:
!
Indicates a potential for personal injury.
CAUTION:
!
Indicates a potential loss of data or damage to equipment.
IMPORTANT:
+
Indicates information that is important to know for the proper
completion of a procedure, choice of an option, or completing a task.
The following typographical conventions are used in this document:
Book titles, directory names, file names, path names, and program/process names
are shown in
italics .
Example:
the
DRS5 User's Guide
/usr/local/bin/fd
the /TPH15spool_M program
Computer output (text that represents information displayed on a computer
screen, such as menus, prompts, responses to input, and error messages) are
shown in constant width.
Example:
[01] The server has been stopped
User input (text that represents information entered by a computer user, such as
command names, option letters, and words) are shown in constant width bold.
Variables contained within user input are shown in angle brackets (< >).
Example:
At the prompt, type run <file name> -m
Keyboard keys are shown in bold italics .
Example:
After entering data, press
Enter .

iv
General Information 0
This service guide provides all technical information relating to the basic configuration
for Acer’s global product offering. To better fit local market requirements and enhance
product competitiveness, the regional office may have decided to extend the
functionality of a machine (such as add-on cards, modems, or extra memory capabilities).
These localized features are not covered in this generic service guide. In such cases,
contact the regional offices or the responsible personnel/channel to provide further
technical details.
When ordering FRU parts: Check the most up-to-date information available on the
Website. If, for whatever reason, a part number change is made, it may not be noted in
this printed service guide.
Acer-authorized Service Providers:
The Acer office may have a different part number code than those given in the FRU list
in this service guide. A list must be provided by the regional Acer office to order FRU
parts for repair and service of customer machines.

v
CHAPTER 1
Hardware Specifications
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Operating System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Webcam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Wireless and Networking. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Privacy Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Dimension and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Power Adapter and Battery. . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Input and Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Input and Output (I/O) Ports . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Eco-compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Optional and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Notebook Tour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Touchpad Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Using the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Windows Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Hotkeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Specification Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Computer specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
System Board Major Chips . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
Processor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
CPU Fan True Value Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
Memory Combinations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
Video Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Hard Disk Drive (AVL components) . . . . . . . . . . . . . . . . . . . . 1-28
LCD 11.6” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
LCD 11.6” (Continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
LCD Inverter (not available with this model) . . . . . . . . . . . . 1-31

vi
Display Supported Resolution (LCD Supported Resolution) 1-31
Graphics Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
Display Supported Resolution (GPU Supported Resolution) 1-32
LAN Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
Bluetooth Interface (not available in this model) . . . . . . . . 1-32
Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Wireless Module 802.11 a/b/g/n . . . . . . . . . . . . . . . . . . . . . . 1-33
Wireless Module 802.11 b/g/n . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Mini Card Wireless Networking Card . . . . . . . . . . . . . . . . . . 1-34
3G Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Audio Codec and Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
Audio Codec and Amplifier (Continued) . . . . . . . . . . . . . . . 1-36
Audio Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
1.0M HD Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
VRAM (not available in this model) . . . . . . . . . . . . . . . . . . . 1-37
USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
HDMI Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
AC Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
System Power Management . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
Card Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
System LED Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
System DMA Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
System Interrupt Specification. . . . . . . . . . . . . . . . . . . . . . . . 1-41
System I/O Address Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
Memory Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48
CHAPTER 2
System Utilities
BIOS Setup Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Navigating the BIOS Utility . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Exit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
BIOS Flash Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

vii
DOS Flash Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
WinFlash Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Clearing BIOS Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Removing Insyde BIOS Passwords . . . . . . . . . . . . . . . . . . . . . 2-19
Removing Insyde HDD Password . . . . . . . . . . . . . . . . . . . . . . 2-21
Miscellaneous Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Using DMITools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Using UUIDTools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Using the LAN MAC EEPROM Utility . . . . . . . . . . . . . . . . . . . 2-28
Crisis Disk Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
CHAPTER 3
Machine Maintenance Procedures
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Recommended Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Pre-disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Disassembly Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
External Module Disassembly Process . . . . . . . . . . . . . . . . . . . . 3-8
External Module Disassembly Flowchart . . . . . . . . . . . . . . . 3-8
Dummy Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Battery Pack Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Base Door Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
WLAN (Wireless Local Area Network) Module Removal . . . 3-12
DIMM (Dual In-line Memory Module) Module Removal . . . 3-14
HDD (Hard Disk Drive) Module Removal . . . . . . . . . . . . . . . 3-15
Main Unit Disassembly Process . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Main Unit Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . 3-17
Upper Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Switch Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Keyboard Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
IO Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
LED Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Mainboard Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
RTC battery Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
Thermal Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Speakers Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
LCD (Liquid Crystal Display) Module Removal . . . . . . . . . . . 3-35
LCD Module Disassembly Process . . . . . . . . . . . . . . . . . . . . . . . . 3-37

viii
LCD Module Disassembly Flowchart . . . . . . . . . . . . . . . . . . . 3-37
LCD Bezel Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38
Camera Module Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41
LCD Hinges Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42
LCD Panel Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
LVDS and Camera Cable Removal . . . . . . . . . . . . . . . . . . . . . 3-45
LCD Reassembly Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46
Replacing the LVDS and Camera Cable. . . . . . . . . . . . . . . . . 3-46
Replacing the LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
Replacing the LCD Hinges . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49
Replacing the Camera Module . . . . . . . . . . . . . . . . . . . . . . . 3-50
Replacing the LCD Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51
Main Unit Reassembly Process . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53
Replacing the LCD (Liquid Crystal Display) Module . . . . . . . 3-53
Replacing the Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55
Replacing the Thermal Module. . . . . . . . . . . . . . . . . . . . . . . 3-56
Replacing the RTC battery . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-58
Replacing the Mainboard . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59
Replacing the LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61
Replacing the IO Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62
Replacing the Keyboard Module. . . . . . . . . . . . . . . . . . . . . . 3-64
Replacing the Switch Board. . . . . . . . . . . . . . . . . . . . . . . . . . 3-67
Replacing the Upper Case . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68
External Module Reassembly Process . . . . . . . . . . . . . . . . . . . . . 3-70
Replacing the HDD (Hard Disk Drive) Module . . . . . . . . . . . 3-70
Replacing the DIMM (Dual In-line Memory Module) Module3-72
Replacing the WLAN (Wireless Local Area Network) Module3-73
Replacing the Base Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-74
Replacing the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . 3-76
Replacing the Dummy Card . . . . . . . . . . . . . . . . . . . . . . . . . . 3-77
CHAPTER 4
Troubleshooting
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Power On Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

ix
No Display Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
LCD Picture Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Internal Keyboard Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Touchpad Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Internal Speaker Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Internal Microphone Failure . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
USB Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Other Functions Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Intermittent Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Undetermined Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Post Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
CHAPTER 5
Jumper and Connector Locations
Mainboard Jumper and Connector Locations . . . . . . . . . . . . . . 5-3
Clearing Password Check and BIOS Recovery . . . . . . . . . . . . . . 5-5
Clearing Password Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
BIOS Recovery by Crisis Disk. . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
CHAPTER 6
FRU (Field Replaceable Unit) List
Exploded Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
FRU List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Screw List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
CHAPTER 7
Model Definition and Configuration
Acer Aspire One 725 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
CHAPTER 8
Test Compatible Components
Microsoft® Windows® 7 Environment Test . . . . . . . . . . . . . . . 8-4
CHAPTER 9
Online Support Information

x
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3