Acer Aspire One AO531h Aspire One AO531h Service Guide
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- Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 1
Aspire one Series Service Guide Service guide files and updates are available on the ACER/CSD web; for more information, please refer to http://csd.acer.com.tw PRINTED IN TAIWAN - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 2
Revision History Please refer to the table below for the updates made on Aspire one Series service guide. Date Chapter Updates II - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 3
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. Acer Incorporated makes no representations or warranties, either expressed - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 4
Conventions The following conventions are used in this manual: SCREEN MESSAGES Denotes actual messages that appear on screen. . Gives precautionary measures to avoid possible hardware or software problems. Reminds you to do specific actions relevant to the accomplishment of procedures. IV - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 5
supports, please read the following general information. 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for Acer modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this generic service guide. In such cases - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 6
VI - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 7
21 Information 22 Main 23 Security 24 Boot 27 Exit 28 BIOS Flash Utility 29 DOS Flash Utility 30 WinFlash Utility 31 Remove HDD/BIOS Password Utilities 33 Miscellaneous Utilities 36 Machine Disassembly and Replacement 39 Disassembly Requirements 39 Related Information 39 General - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 8
LED Board 81 Removing the Speaker Module 83 Removing the Bluetooth Module 85 Removing the Hard Disk Drive Module 87 LCD Module Disassembly Process 89 LCD Module Disassembly Flowchart 89 Removing the LCD Bezel 90 Removing the Camera Board 92 Removing the Microphone Board 93 Removing the LCD - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 9
and Connector Locations 159 Top View 159 Bottom View 160 Clearing Password Check and BIOS Recovery 161 Clearing Password Check 161 BIOS Recovery by Crisis Disk 162 FRU (Field Replaceable Unit) List 163 Aspire one Exploded Diagrams 164 Main Assembly 164 Base Assembly 165 LCD Assembly - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 10
Table of Contents X - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 11
• Microsoft Windows® XP™ / Linux Platform • • Intel Diamondville Intel 945GMS+ICH7M chipset System Memory • Dual-Channel DDR2 SDRAM support • Up to 1 GB of DDR2 533 MHz memory with 1 DDR2 SODIMM slot Display • 10.1" TFT WSVGA (1024 x 600 pixels) Storage subsystem • 2.5"/1.8" hard disk drive or - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 12
life with 3-cell battery; 6-hour battery life with 6-cell battery • 3-pin 30W AC adapter Privacy control • BIOS user, supervisor, HDD passwords • Kensington lock slot Special keys and controls • New Acer flat keyboard • Supports Application keys for Windows XP/Linux version • Support for Home key - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 13
Environment • Temperature: • Operating: 5 °C to 35 °C • Non-operating: -20 °C to 65 °C • Humidity (non-condensing): • Operating: 20% to 80% • Non-operating: 20% to 80% Chapter 1 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 14
USB-0 PCI-Express PCI-E USB 2.0 (Port0~7) Intel I/O Controller Hub 7 (ICH7M) USB SB PCIE-2 PCIE-3 4 in 1 Card Reader Realtek RTS5159 USB port*3 USB-3 USB-1,2,4 Bluetooth module USB-7 RTC BATTERY Azalia IHDA LPC LPC PCIE-4 USB-5 3G/WiMAX 10/100 LAN Atheros 8132/8114 USB-6 WLAN SD - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 15
features, let us show you around your new computer. Front View No. 1 2 3 4 5 6 Chapter 1 Icon Item Acer Crystal Eye Webcam Display screen Microphone Description Web camera for video communication. Also called Liquid-Crystal Display (LCD), displays computer output. Internal microphone for sound - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 16
/ Wireless LAN communication indicator Click buttons (left and right) Power button/ indicator Description Indicates the status of Battery/ Bluetooth/3G Wireless LAN communication. (only for certain models) The left and right buttons function like the left and right mouse buttons. Turns the computer - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 17
(SD), MultiMediaCard (MMC), Memory Stick (MS), Memory Stick PRO (MS PRO), xD-Picture Card (xD). Note: Push to remove/install the card. Only one card can operate at any Accepts input from external microphones. USB 2.0 ports DC-in jack Ethernet (RJ-45) port Connect to USB 2.0 devices (e.g. USB mouse). - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 18
. Your PC may have a different battery, depending on the model purchased. Accepts a 3G SIM card for 3G connectivity (only for certain models). Releases the battery for removal. Houses the computer's Wireless LAN module. Ventilation slots Memory compartment Battery lock Vents enable the computer to - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 19
Description Indicates the status of Bluetooth communication. Wireless LAN Indicates the status of Wireless LAN communication. 3G communication HDD Indicates the status of 3G communication. Indicates when the hard disk drive is active. Num Lock Caps Lock Battery Lights up when Num Lock - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 20
finger movement; hence, the lighter the touch, the better the response. Tapping too hard will not increase the TouchPad's responsiveness. NOTE: By default, vertical and horizontal scrolling is enabled on your touchpad. It can be disabled under Mouse settings in Windows Control Panel. 10 Chapter 1 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 21
Using the Keyboard Your Aspire one has a close-to-full-sized keyboard and an embedded numeric keypad, separate cursor, lock, function and special keys. Lock Keys and embedded numeric keypad The keyboard has three lock keys which you can toggle on and off. Lock key Caps Lock Num Lock + - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 22
keyboard has two keys that perform Windows-specific functions. Key Description Windows key Pressed alone, this key has the same effect as clicking on the Windows connected to a network domain), or switch users (if you're not connected to a network domain) < > + : Minimizes all windows < > + - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 23
access most of the computer's controls like screen brightness and volume output Fn> + < > + < > + < > Icon Function Hotkey help Acer eSettings Management Acer ePower Management Sleep Display toggle Screen blank TouchPad toggle Speaker toggle Brightness up Brightness down Volume up Volume - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 24
symbol 1. Open a text editor or word processor. 2. Hold and then press the key at the upper-center of the keyboard. NOTE: Some fonts and software do not support the Euro symbol. The US dollar sign 1. Open a text editor or word processor. 2. Hold and then press the key at - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 25
Keyboard Controller, Battery management Unit, and RTC. • Integrated VGA solution for Intel 945GSE. • Realtek ALC272X-GR for High Definition Audio Codec. • Atheros AR8114A for 10/100 LAN • On-die, primary 32-kB instructions Bit support for 82 Fan Speed (RPM) SPL Spec (dBA) 3300 3800 4300 5500 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 26
DDR2 RAM 1 512 MB / 1GB 1 GB DDR II 533Mhz SDRAM memory interface design 533Mhz SDRAM System Storage HDD Item Specification • 9.5mm height, 2.5" HDD • Easily removable with no more than four screws • SATA bus • 80/320GB and above • 5400 rpm • SATA connector BTO Hard Disk Drive Interface Item - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 27
InSyde v0.10 Flash 1 MB • Support ISIPP • Support Acer UI • Support multi-boot • Suspend to RAM (S3)/Disk (S4) • Various hot-keys for system control • Support SMBUS 2.0, PCI2.3 • ACPI 2.0 compliance with Intel Speed Step Support C1, C2, C3, C4 and S3, S4 for mobile CPU • DMI utility for BIOS serial - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 28
Chipset Atheros AR8114 10/100 Mbps Fast Ethernet LAN with Integrated Transceiver Features • PCI-E interface LAN controller • PCIE V1.1 compliant • Supports wake on LAN • 48-pin QFN package Keyboard Item Specification Type New Acer flat keyboard Total number of keypads 84 Windows logo key - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 29
Mini Card Item Number Supported Features Camera Item Vendor and model Type 3G Card Features Item Bluetooth interface Chipset Item Features Wireless LAN Type Features Item Battery Item Vendor & model name Battery Type Pack capacity Number of battery cell Package configuration - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 30
20 Chapter 1 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 31
Troubleshooting if a problem arises. To activate the BIOS Utility, press F2 during POST (when Press to enter Setup message is prompted on the bottom of screen). Press F2 to enter setup. The default parameter of F12 Boot the screen. Help for parameters are found in the Item Specific Help part of - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 32
displays a summary of your computer hardware information. InsydeH20 Setup Utility Information Main Security Boot Exit Rev. 3.5 CPU Type CPU Speed HDD Model Name: HDD Serial Number: System BIOS Version: VGA BIOS Version: Serial Number: Asset Tag Number: Product Name: Manufacturer Name: UUID: Intel - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 33
disables the system boot from LAN (remote server). Enables, disables Boot Menu during POST. Enables, disables D2D Recovery function. The function allows the user to create a hidden partition on hard disc drive to store operation system and restore the system to factory defaults. Control the mode in - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 34
. The user can not either enter the Setup menu nor change the value of parameters. Press Enter to set the user password. When user password is set, this password protects the BIOS Setup Utility from unauthorized access. The user can enter Setup menu only and does not have right to change the value - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 35
If desired, you can opt to enable the Password on boot parameter. 5. When you are done, press F10 to save the changes and exit the BIOS Setup Utility. Removing a Password Follow these steps: 1. Use the ↑ and ↓ keys to highlight the Set Supervisor Password parameter and press the Enter key. The Set - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 36
Retype the password in the Confirm New Password field. 4. Press Enter. After setting the password, the computer sets the User Password parameter to "Set". 5. If desired, you can enable the Password on boot parameter. 6. When you are done, press F10 to save the changes and exit the BIOS Setup Utility - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 37
USB diskette drives, the onboard hard disk drive and the DVD drive in the module bay. InsydeH20 Setup Utility Information Main Security Boot Exit Boot priority order: Rev. 3.5 Item Specific Help 1. IDE0 : ST9250315AS 2. IDE1 : 3. USB FDD : 4. USB HDD : 5. Network Boot : Atheros Boot Agent 6. USB - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 38
Exit The Exit screen allows you to save or discard any changes you made and quit the BIOS Utility. InsydeH20 Setup Utility Information Main Security Boot Exit Exit Saving Changes Exit Discarding Changes Load Setup Defaults Discard Changes Save Changes Rev. 3.5 Item Specific Help Exit System Setup - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 39
becomes corrupted. Use the Phlash utility to update the system BIOS flash ROM. NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery Diskette before you use the Phlash utility. NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 40
the following steps to use the DOS Flash Utility: 1. Copy the BIOS flash tool and the BIOS file to a USB storage disk. Now use this disk to boot the system. 2. Use the DOS command prompt to enter the following command: Flashit bios _ver.fd /dc /mc /all The BIOS flash process begins. 30 Chapter 2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 41
WinFlash Utility Perform the following steps to use the WinFlash Utility: 1. Copy the BIOS file into the Winflash folder. 2. Double-click the WinFlash executable file. Chapter 2 31 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 42
3. Click OK to begin the update. A progress screen displays. 4. When the process is complete, close all programs and applications and reboot the system. 32 Chapter 2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 43
. An Unlock Password displays. 3. Make a note of the key, 76943488 in the example. 4. Boot up the system and open a DOS prompt. 5. Enter the UnlockHD.EXE command and input the key to create an unlock code. Make a note of the result, for example 46548274. 6. Reboot and enter the BIOS by pressing F2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 44
Removing BIOS Passwords: If you key in the wrong Supervisor Password three times, System Disabled displays on the screen. See the image below. To reset the BIOS password, run BIOS_PW.EXE as follows: 1. Key in bios_pw 14452 0 2. Select one string from the list. 34 Chapter 2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 45
in the selected string (qjjg9vy, 07yqmjd etc.) for the BIOS user password. Cleaning BIOS Passwords To clear the password, perform the following steps: 1. From a DOS prompt, Execute clnpwd.exe 2. Press 1 or 2 to clean the desired password shown on the screen. The onscreen message determines whether - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 46
to be used in the DMI pool for hardware management. When the BIOS displays Verifying DMI pool data it is checking the table correlates with the hardware before sending to the operating system (Windows, etc.). To update the DMI Pool, perform the following steps: 1. Enter into DOS. 2. Execute dmitools - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 47
from Memory Input: dmitools /r Output: Manufacturer (Type1, Offset04h): Acer Product Name (Type1, Offset05h): Aspire one xxxxx Serial WriteLeng=6 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 48
38 Chapter 2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 49
SKUs for the Aspire one; the HDD and SSD models. The procedures outlined use the SSD model unless otherwise stated. This chapter contains step-by-step procedures on how to disassemble the notebook computer for maintenance and troubleshooting. Disassembly Requirements To disassemble the computer, you - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 50
Aspire one; the HDD and SSD models. The procedures outlined use the SSD model unless otherwise stated. Pre-disassembly Instructions Before proceeding with the disassembly to remove the Mainboard, you must first remove the Keyboard then disassemble the inside assembly frame in that order. Main Screw - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 51
two separate SKUs for the Aspire one; the HDD and SSD models. The procedures outlined use the SSD model unless otherwise stated. External Modules Disassembly Flowchart Turn off system and peripherals power Disconnect power and signal cables from system Rem ove Battery Rem ove Lower Covers Rem - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 52
Removing the Battery Pack 1. Turn the computer over. 2. Slide the battery lock/unlock latch to the unlock position. 3. Slide and hold the battery release latch to the release position (1), then slide out the battery pack from the main unit (2). 2 1 42 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 53
Removing the SD Dummy Card 1. Push the SD dummy card all the way in to eject it. 2. Pull the card out from the slot. Chapter 3 43 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 54
Removing the Lower Covers 1. See "Removing the Battery Pack" on page 42. 2. Loosen the two captive screws in Memory (red callout) and Wireless covers (green callout). 3. Lift the Memory Cover up to remove. 4. Lift the Wireless Cover up to remove. 44 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 55
Removing the DIMM Module 1. See "Removing the Lower Covers" on page 44. 2. Push out the release latches on both sides of the DIMM socket to release the DIMM module. 3. Remove the DIMM module. Chapter 3 45 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 56
WLAN Module IMPORTANT: The following disassembly images represent the optional 3G model. The 3G module on the left of the images may not be present. 1. See "Removing the Lower Covers" on page 44. 2. Disconnect the antenna cables from the WLAN Module. IMPORTANT: The black cable attaches to the Main - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 57
4. Detach the WLAN Module from the WLAN socket. NOTE: When reattaching the antennas, ensure the cables are tucked into the chassis to prevent damage. Chapter 3 47 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 58
Module is only available on certain models. 1. See "Removing the Lower Covers" on page 44. 2. Disconnect the antenna cables from the 3G Module. IMPORTANT: The yellow cable attaches to the M (Main) terminal and the blue cable attaches to the A (Aux) terminal. 3. Move the antennas away and remove - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 59
4. Detach the 3G Module from the socket. NOTE: When reattaching the antennas, ensure the cables are tucked into the chassis to prevent damage. Chapter 3 49 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 60
procedure represents two separate SKUs for the Aspire one; the HDD and SSD models. The procedures outlined use the SSD model unless otherwise stated. Upper Cover Disassembly Flowchart Remove External Modules before proceeding Rem ove Keyboard Rem ove Upper Cover Screw List Step Upper Cover - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 61
Removing the Keyboard 1. See "Removing the Battery Pack" on page 42. 2. Turn the computer rightside up and open the lid to the full extent. 3. Locate the three securing latch at the top of the Keyboard as shown. 4. Gently lift the Keyboard using one of the keys as shown and unlock the three securing - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 62
5. Grasp the Keyboard and lift upward in the centre as shown. 6. Turn the Keyboard over and place it on the TouchPad area as shown. 7. Lift the Keyboard FFC securing latch as shown. 52 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 63
8. Disconnect the FFC and remove the Keyboard. Chapter 3 53 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 64
Removing the Upper Cover 1. See "Removing the Lower Covers" on page 44. 2. Turn the computer over. Remove the seven securing screws. Step Upper Cover (red callouts) Size M2*6 Upper Cover (green callouts) M2*3 Quantity 3 4 Screw Type 3. Turn the computer over and remove the nine screws - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 65
4. Disconnect the following cables from the Mainboard. A B Release the locking latch on A as shown. Disconnect A from the Mainboard. Release the locking latch on B as shown. Disconnect B from the Mainboard. Chapter 3 55 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 66
5. Close the lid and turn the computer around to access the two securing screws on the hinge covers. 6. Remove the two securing screws as shown. Step Hinge Cover Size M2*3 Quantity 2 Screw Type 7. Grasp the hinge covers and remove them using a side-to-side motion as indicated. 8. Open the lid - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 67
10. Grasp the rear edge of the left side cover, as shown, and pry it away from the Upper Cover. 11. Lift the Upper Cover clear of the computer in the direction of the arrow. Chapter 3 57 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 68
Removing the Power Board 1. See "Removing the Upper Cover" on page 54. 2. Open the FFC locking latch as shown and remove the FFC. 3. Remove the two securing screws from the Power Board. Step Power Board Size M2*2 Quantity 2 Screw Type 58 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 69
4. Remove the board from the Upper Cover. Chapter 3 59 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 70
Removing the Button Board 1. See "Removing the Upper Cover" on page 54. 2. Open the Mainboard FFC locking latch and remove the FFC as shown. 3. Grasp the other end of the Mainboard FFC and pass the cable between the plastic and cover. 4. Peel back the plastic strip and release the Mainboard FFC from - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 71
5. Open the TouchPad FFC locking latch and remove the FFC as shown. 6. Remove the two securing screws from the Button Board. Step Button Board Size M2*3 Quantity 2 7. Lift the Button Board clear of the Upper Cover. Screw Type Chapter 3 61 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 72
the TouchPad FFC IMPORTANT: It is not possible to remove the TouchPad on the Aspire one. If the TouchPad malfunctions, follow the disassembly steps to remove any additional components on the Upper Cover and replace the entire Upper Cover. 1. See "Removing the Button Board" on page 60. 2. Open the - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 73
the LCD power cable in place. 3. Disconnect the LCD power cable as shown. 4. Carefully pull the antenna and 3G cables through from the underside of the computer. NOTE: The 3G Module is only available on certain models. If 3G is not supported, only the two WLAN cables must be removed. Chapter 3 63 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 74
5. Remove the two securing screws from the LCD brackets. Step LCD Module Size M2*5 Quantity 2 Screw Type IMPORTANT: Ensure all cables are clear of the lower cover before removing the LCD module. 6. Grasp the module with both hands and lift upwards. 64 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 75
HDD models, though the flowchart and other components are identical. Lower Cover Disassembly Flowchart Remove External Modules before proceeding Rem ove LED Board Rem ove Speakers Rem ove SSD Rem ove HDD Rem ove Bluetooth Rem ove Mainboard Rem ove Thermal Module Rem ove CPU Fan NOTE: Items - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 76
SSD SKU Disassembly Procedure The SSD SKU Lower Assembly appears as shown after removal of the Upper Cover and LCD Module. 66 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 77
Removing the LED Board 1. See "Removing the Upper Cover" on page 54. 2. Open the Mainboard FFC locking latch and remove the FFC as shown. 3. Open the LED Board FFC locking latch and remove the FFC as shown. Chapter 3 67 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 78
4. Remove the two securing screws from the LED Board. Step LED Board Size M2*3 Quantity 2 5. Lift the LED Board clear of the Lower Cover. Screw Type 68 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 79
Removing the Speaker Module 1. See "Removing the Upper Cover" on page 54. 2. Remove the three securing screws from the Speaker Module. Step Speaker Module Size M2*4 Quantity 3 3. Disconnect the Speaker cable from the Mainboard. Screw Type Chapter 3 69 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 80
4. Remove the adhesive strips holding the cable in place. 5. Lift the left and right side speakers from the Lower Cover as shown. 70 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 81
Module 1. See "Removing the Upper Cover" on page 54. 2. Disconnect the Bluetooth cable from the Mainboard. 3. Lift the cable as shown to disengage the adhesive strip from the Mainboard. 4. Lift the Bluetooth Module upward to disengage the adhesive holding the module in place. Chapter 3 71 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 82
5. Disconnect the Bluetooth cable from the module. 72 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 83
Removing the Solid State Disk Drive Module 1. See "Removing the Upper Cover" on page 54. 2. Remove the single securing screw from the SSD Module. Step SSD Module Size M2*3 Quantity 1 Screw - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 84
4. Remove the two screws securing the SSD to the carrier. Step Size SSD Carrier 5. Remove the SSD from the carrier. Quantity 2 Screw Type 74 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 85
" on page 63. 2. See "Removing the Speaker Module" on page 69. 3. See "Removing the Bluetooth Module" on page 71. 4. See "Removing the Solid State Disk Drive Module" on page 73 or "Removing the Hard Disk Drive Module" on page 87, depending on the model purchased. 5. Remove the four (or three for the - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 86
Removing the RTC Battery IMPORTANT: Follow local regulations for disposal of all batteries. 1. See "Removing the Mainboard" on page 75. 2. Turn the Mainboard over and locate the RTC Battery. 3. Lift the battery out of the Mainboard socket as shown. 76 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 87
Removing the Thermal Module 1. See "Removing the Mainboard" on page 75. 2. Turn the Mainboard CPU side up, and place it on a clean surface. 3. Remove the three securing screws from the Thermal Module. Step Thermal Module Size M2*3 Quantity 3 4. Grasp the Thermal Module and lift it clear of the - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 88
Removing the CPU Fan 1. See "Removing the Thermal Module" on page 77. 2. Disconnect the CPU Fan power cable. 3. Remove the single screw securing the CPU Fan to the Mainboard. Step CPU Fan Size M2*3 Quantity 1 Screw Type 78 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 89
4. Lift the CPU Fan clear of the Mainboard. Chapter 3 79 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 90
HDD SKU Disassembly Procedure The HDD SKU Lower Assembly appears as shown after removal of the Upper Cover and LCD Module. 80 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 91
Removing the LED Board 1. See "Removing the Upper Cover" on page 54. 2. Open the Mainboard FFC locking latch and remove the FFC as shown. 3. Open the LED Board FFC locking latch and remove the FFC as shown. Chapter 3 81 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 92
4. Remove the two securing screws from the LED Board. Step LED Board Size M2*3 Quantity 2 5. Lift the LED Board clear of the Lower Cover. Screw Type 82 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 93
Removing the Speaker Module 1. See "Removing the Upper Cover" on page 54. 2. Remove the three securing screws from the Speaker Module. Step Speaker Module Size M2*4 Quantity 3 3. Disconnect the Speaker cable from the Mainboard. Screw Type Chapter 3 83 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 94
4. Remove the adhesive strip holding the cable in place. 5. Lift the left and right side speakers from the Lower Cover as shown. 84 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 95
Module 1. See "Removing the Upper Cover" on page 54. 2. Disconnect the Bluetooth cable from the Mainboard. 3. Lift the cable as shown to disengage the adhesive strip from the Mainboard. 4. Lift the Bluetooth Module upward to disengage the adhesive holding the module in place. Chapter 3 85 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 96
5. Lift the module and cable clear of the Lower Cover. 6. Disconnect the Bluetooth cable from the module. 86 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 97
Removing the Hard Disk Drive Module 1. See "Removing the Upper Cover" on page 54. 2. Remove the three securing screws from the HDD Module. Step HDD Module Size M2*3 Quantity 3 Screw - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 98
4. Remove the four screws (two each side) securing the hard disk to the carrier. Step HDD Carrier Size M3*3 5. Remove the HDD from the carrier. Quantity 4 Screw Type IMPORTANT: The procedures for removing the Mainboard, RTC Battery, Thermal Module, and CPU Fan are identical for both SKUs. See - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 99
and clips are used and that the cables are replaced in the same position. NOTE: These disassembly procedures feature the 3G model only, therefore there are four antenna cables (white, black, yellow, and blue) addressed during the procedure. If 3G is not supported, only the WLAN antennas (white and - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 100
Removing the LCD Bezel 1. See "Removing the LCD Module" on page 63. 2. Remove the six screw caps and screws from the LCD Bezel. Step LCD Bezel Size M2*5 Quantity 6 Screw Type 3. Starting from the inside top edge, pry the bezel away from the panel. Continue moving down the sides until the bezel - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 101
4. Lift up the bezel and remove it from the LCD Module. Chapter 3 91 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 102
Removing the Camera Board 1. See "Removing the LCD Bezel" on page 90. 2. Disconnect the cable from the Camera Board as shown. 3. Remove the Camera Board from the LCD Module. 92 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 103
Removing the Microphone Board 1. See "Removing the LCD Bezel" on page 90. 2. Disconnect the cable from the Microphone Board as shown. 3. Remove the Microphone Board from the LCD Module. Chapter 3 93 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 104
Removing the LCD Panel 1. See "Removing the Camera Board" on page 92. 2. Remove the two securing screws from the LCD Panel. Step LCD Panel Size M2*3 Quantity 2 Screw Type 3. Hold the LCD Panel by the hinges and lift to remove. Place it on a clean surface. 94 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 105
Removing the LCD Brackets and FPC Cable 1. See "Removing the LCD Panel" on page 94. 2. Remove the four securing screws (two each side) from the LCD Panel brackets. Step LCD Brackets Size M2*3 Quantity 4 3. Remove the brackets from the LCD Panel. Screw Type Chapter 3 95 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 106
4. Turn the LCD panel over on a clean surface. Lift the cable to release the adhesive strips securing the cable to the panel. 5. Carefully lift the adhesive tape protecting the cable connector. 6. Carefully lift the adhesive tape securing the cable to the panel. 96 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 107
7. Disconnect the cable from the LCD panel as shown. Chapter 3 97 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 108
Removing the Antennas NOTE: These disassembly procedures feature the 3G model only, therefore there are four antenna cables (white, black, yellow, and blue) addressed during the procedure. If 3G is not supported, only the WLAN antennas (white and black) need to be removed. 1. See "Removing the LCD - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 109
cable completely clear of the module. 6. Lift the adhesive pad securing the Antenna pad to the module. Carefully pry up the yellow cable 3G Antenna pad, as shown, and remove the pad from the LCD Module. IMPORTANT: A strong adhesive is used to secure the Antenna pad in place. Take - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 110
7. Remove the combined 3G and WLAN cables from the cable channel as shown. Ensure that the cable is free of all securing clips. 8. Lift the adhesive pad securing the - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 111
10. Remove the adhesive tape securing the white WLAN cable to the module. 11. Lift the adhesive pad securing the Antenna pad to the module. Carefully pry up the blue and black cable 3G and WLAN Antenna pad, as shown, and remove the pad from the LCD Module. IMPORTANT: A strong adhesive is used to - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 112
tape, as indicated, to secure it in place. 2. Replace the WLAN Antenna cable as shown, using 3. Replace the adhesive tape to secure the WLAN all available cable clips. cable in place. 4. Replace the adhesive tape securing the WLAN Antenna to the combined 3G and WLAN Antenna pad. 102 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 113
down the pad and adhesive tape, as indicated, to secure it in place. 7. Run the 3G Antenna cable along the LCD Module using all available cable clips. Replace the lid sensor magnet as shown. 8. Ensure that the 3G Antenna cable runs as shown using all available cable clips and securing tape. Chapter - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 114
9. Run the 3G Antenna cable along the bottom edge of the LCD Module as shown, using all available cable clips. 10. The LCD Module appears as follows when the 3G and WLAN Antennas are correctly installed. 104 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 115
Cable and Brackets 1. Insert the LCD Cable into the panel connector as shown. 2. Secure the connector by replacing the adhesive strip as shown. 3. Replace the adhesive protection strip as shown. 4. Replace the cable as shown on the rear of the panel. IMPORTANT: Ensure that the LCD Cable runs as - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 116
5. Align the screw holes and replace the left and right LCD brackets as shown. 6. Secure the brackets to the panel using four bracket screws (two each side). 106 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 117
Replacing the LCD Panel 1. Replace the LCD Panel top edge first as shown. Ensure that the locating pins on the top edge of the brackets below the hinge. 3. Ensure that the locating pins on the bottom edge of the brackets are positioned correctly and replace the two securing screws. Chapter 3 107 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 118
and 2. Connect the Microphone cable as shown. press down to secure it in place. Replacing the Camera Board 1. Ensure that the locating pins are correctly positioned 2. Connect the Camera cable as shown. and place the Camera Board in the LCD Module. Press down to secure it in place. 108 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 119
Replacing the LCD Bezel 1. Replace the bezel top edge first as shown. 2. Starting at the hinge wells, ensure that the Antenna and LCD power cables are not trapped and press down to secure the bezel in place. 3. Press down the top corners to secure the bezel in place. Chapter 3 109 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 120
4. Press down around the edges of the bezel to secure it in place. 5. Replace the six screws and screw caps. 110 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 121
split in to two separate sections for the SSD and HDD models. SSD SKU Reassembly Procedure Replacing the CPU Fan 1. Align the screw holes on the CPU Fan and Mainboard and replace the CPU Fan. 2. Replace the single securing screw. 3. Connect the CPU Fan cable to the Mainboard connector as shown - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 122
Thermal Module IMPORTANT: Ensure all heat pads are in place before replacing the Thermal Module. The following thermal pads are approved for use: • Eapus XR-PE 1. Align the screw holes on the Thermal Module and Mainboard and replace the module, CPU Fan side first. 2. Lower the Thermal Module in - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 123
the RTC Battery 1. Insert the RTC Battery in to the Mainboard socket as 2. Press down to secure it in place. shown. Replacing the Mainboard 1. Align the screw holes and replace the Mainboard in 2. Replace the four (or three) screws to secure the the Lower Cover as shown. Mainboard in place - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 124
Insert the module in the direction of the arrow. Ensure that the interface is properly connected. 4. Replace the single securing screw. Replacing the Bluetooth Module 1. Connect the Bluetooth cable to the Bluetooth Module. 2. Place the Bluetooth Module in the Lower Cover as shown. 114 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 125
3. Run the Bluetooth cable along the Lower Cover as 4. Connect the Bluetooth cable to the Mainboard. shown, using all the available cable clips. Chapter 3 115 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 126
Replacing the Speaker Module 1. Align the screws on the Speaker Modules and the Lower Cover. 2. Replace the left and right Speakers as shown. Ensure that the locating pin on the left Speaker is seated correctly. 3. Replace the adhesive tapes securing the cables in place. 116 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 127
4. Connect the Speaker cable to the Mainboard connector. 5. Replace the three securing screws. Replacing the LED Board 1. Place the LED Board in the Lower Cover as shown. Ensure that the Bluetooth and WLAN switches (red callouts) are correctly placed in the spacers (green callouts). Chapter 3 117 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 128
2. Replace the two securing screws. 3. Connect the FFC to the LED Board and close the locking latch. 4. Connect the FFC to the Mainboard and close the locking latch. 118 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 129
the CPU Fan, Thermal Module, RTC Battery, and Mainboard are identical for both SKUs. See "Replacing the CPU Fan" on page 111, "Replacing the Thermal Module" on page 112, "Replacing the RTC Battery" on page 113, and "Replacing the Mainboard" on page 113. Replacing the HDD Module 1. Place the HDD - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 130
Replacing the Bluetooth Module 1. Connect the Bluetooth cable to the Bluetooth Module. 2. Place the Bluetooth Module in the Lower Cover as shown. 3. Run the Bluetooth cable along the Lower Cover as 4. Connect the Bluetooth cable to the Mainboard. shown, using all the available cable clips. 120 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 131
the Speaker Module 1. Align the screws on the Speaker Modules and the Lower Cover. 2. Replace the left and right Speakers as shown. Ensure that the locating pin on the left Speaker is seated correctly. 3. Ensure that the cables run as - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 132
5. Connect the Speaker cable to the Mainboard connector. 6. Replace the three securing screws. Replacing the LED Board 1. Place the LED Board in the Lower Cover as shown. Ensure that the Bluetooth and WLAN switches (red callouts) are correctly placed in the spacers (green callouts). 122 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 133
2. Replace the two securing screws. 3. Connect the FFC to the LED Board and close the locking latch. 4. Connect the FFC to the Mainboard and close the locking latch. Chapter 3 123 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 134
Upper Cover Reassembly Process Replacing the LCD Module 1. Place the LCD Module on the Lower Cover and secure it in place with the two screws. 2. Connect the Power cable to the Mainboard and secure the cable in place with the adhesive tape. 124 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 135
3. Pass the Antenna cables through the Lower Cover as shown. NOTE: The yellow and blue cables are only present on the 3G models. 4. The Lower Cover appears as follows when all the LCD cables are correctly placed. Chapter 3 125 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 136
Replacing the TouchPad FFC 1. Insert the FFC in to the TouchPad connector. 2. Close the locking latch to secure the cable in place. 126 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 137
the Button Board 1. Place the Button Board rear edge first on to the Upper Cover to engage the securing clips. 2. Replace the two securing screws. 3. Insert the TouchPad FFC in to the Button Board connector and close the locking latch. 4. Lift the plastic covering and insert - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 138
6. Insert the FFC in to the Button Board and close the locking latch. 128 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 139
Replacing the Power Board 1. Place the Power Board front edge first on to the Upper Cover to seat the locating pin. 2. Replace the two securing screws. 3. Insert the FFC in to the Power Board connector and close the locking latch. Chapter 3 129 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 140
first as shown. 2. Lower the Upper Cover in to place as shown. 3. Replace the left side cover, front edge first, as shown. 4. Press the cover to place so that there are no gaps between the Upper an left covers. 5. Replace the right side cover, front edge first, as shown. 6. Press the cover in - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 141
7. Close the lid and replace the left hinge cover as shown. 8. Replace the right hinge cover as shown. 9. Replace the two securing screws in the hinges. Chapter 3 131 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 142
10. Reconnect the following cables to the Mainboard. A Connect A to the Mainboard. B Secure the locking latch on A as shown. Connect B to the Mainboard. Secure the locking latch on B as shown. 132 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 143
Cover. NOTE: Ensure the correct screw type is used for each hole. Red callout: M2*5, Green callout: M2*3. 12. Turn the computer over and replace the seven securing screws as shown. NOTE: Ensure the correct screw type is used for each hole. Red callout: M2*6, Green callout: M2*3. Chapter 3 133 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 144
Replacing the Keyboard 1. Turn the computer over. Insert the Keyboard FFC in 2. Close the FFC locking latch as shown. to the Mainboard connector. 3. Turn the Keyboard over and slide it in the direction of the arrow. IMPORTANT: Ensure the four securing tabs slide underneath the Upper Cover to secure - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 145
4. Press the Keyboard down as shown to engage the three securing clips. Replacing the 3G Module 1. Turn the computer over. Insert the 3G Module in to 2. Replace the single securing screw. the socket. 3. Connect the two 3G Antenna cables to the 3G Module. IMPORTANT: The yellow cable attaches to the M - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 146
the single securing screw. 3. Connect the two Antenna cables to the WLAN Module. IMPORTANT: The black cable attaches to the Main terminal and the white (or gray) cable attaches to the Aux terminal. Replacing the DIMM Module 1. Insert the DIMM Module in to the DIMM slot. 2. Press the module - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 147
Replacing the Lower Covers 1. Replace the Wireless Cover and press down around 2. Replace the Memory Cover and press down around the perimeter to snap it in to place. the perimeter to snap it in to place. 3. Secure the covers in place with the captive screws. Chapter 3 137 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 148
2. Press the card in to the slot until it clicks in to place. Replacing the Battery 1. Slide and hold the battery release latch to the 2. Slide the battery lock/unlock latch to the lock release position (1), then insert the battery pack in to position. the main unit (2). 2 1 138 Chapter 3 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 149
Troubleshooting Chapter 4 Common Problems Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, If the Issue is still not resolved, see "Online Support Information" on page 193. Chapter 4 139 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 150
one at a time to correct the problem. Do not replace a non-defective FRUs: START Check AC/Batt only power on OK Check Power/B Swap AC/ NG Battery NG Swap Power/B Replace hardware connected to the computer that are not necessary to boot the computer to the failure point. 5. Remove any recently - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 151
the Display doesn't work, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: START Power On? OK Extenal RAM well connected? OK External RAM OK? OK LCD Cable well connected? OK LCD Panel/Cable OK? OK Replace Mainboard Go to Power NG On Issue - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 152
, see "Online Support Information" on page 193. Random Loss of BIOS Settings If the computer is experiencing intermittent loss of BIOS information, perform the following actions one at a time to correct the problem. 1. If the computer is more than one year old, replace the CMOS battery. 2. Run - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 153
4. If HDD information is missing from the BIOS, the drive may be defective and should be replaced. 5. Replace the Motherboard. 6. If the Issue is still not resolved, see "Online Support Information" on page 193. LCD Failure If the LCD fails, perform the following actions one at a time to correct the - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 154
OK Check Lower Cover OK Replace Mainboard Reassemble NG Speaker cable to Mainboard Swap Lower NG Cover Sound Problems If sound problems are experienced, perform the following actions one at a time to correct the problem. 1. Reboot the computer. 2. Navigate to Start´ Control Panel´ System and - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 155
back the audio driver to the previous version, if updated recently. 4. Remove and reinstall the audio driver. 5. Ensure that all volume controls are set mid and date. 10. Reinstall the Operating System. 11. If the Issue is still not resolved, see "Online Support Information" on page 193. Chapter - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 156
one at a time to correct the problem. Do not replace a non-defective FRUs: START Check M/B MIC cable OK Check LCD MIC cable OK Replace actions one at a time to correct the problem. 1. Check that the microphone is enabled. Navigate to Start´ Control Support Information" on page 193. 146 Chapter 4 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 157
to resolve the problem. 4. Run the Windows Memory Diagnostic Tool. For more information see Windows Help and Support. 5. Restart the computer and press F2 to enter the BIOS Utility. Check the BIOS settings are correct and that CD/DVD drive is set as the first boot device on the Boot menu. 6. Ensure - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 158
rightside USB port fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Power Button Failure If the Power Button fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: 148 Chapter 4 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 159
Run the Event Viewer to check the events log for errors. For more information see Windows Help and Support. 10. Roll back the mouse driver to the previous version if updated recently. 11. Remove and reinstall the mouse driver. 12. Check the Device Manager to determine that: • The device is properly - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 160
Visually check them for damage. If any problems are found, replace the FRU. 3. Remove or disconnect all of the following devices: • Non-Acer devices • Printer, mouse, and other external devices • Battery pack • Hard disk drive • DIMM • CD-ROM/Diskette drive Module • PC Cards 4. Power-on the computer - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 161
supported by all DIMMs Determine the smallest tWR supported by all DIMMs Determine DIMM size parameters Program the correct system memory Control registers Program ODT Perform steps required before memory init Program the receive enable reference timing control register Program the DLL Timing Control - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 162
SMBASE PC init begin at the stage1 Report every memory range do the hardware ECC init Report status code of every memory range Get the root bridge handle Notify pci bus driver starts to program the resource Reset the host controller IdeBus begin initialization Simple Text Output Protocol Functions - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 163
Code 0xF8 0xF9 Description Report that ExitBootServices () has been called Runtime driver set virtual address map Chapter 4 153 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 164
PEI_HOST_TO_SYSTEM PEI_MEMORY_INIT PEI_S3_RESUME PEI_CLOCK_GEN PEI_OP_PRESENCE PEI_TPM_TCG PEI_FIND_FV PEI_H2O_DEBUG_IO PEI_H2O_DEBUG_COMM PEI_SMM_CONTROL PEI_RESERVED PEI_OEM_DEFINED PEI_DXE_IPL Each Driver entry point used in 80_PORT Code 0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 165
Code 0x3B 0x3C 0x3D 0x3E 0x3F 0x40 0x41 0x42 0x43 0x44 0x45 0x46 0x47 0x48 0x49 0x4A 0x4B 0x4C 0x4D 0x4E 0x4F 0x50 0x51 0x52 0x53 0x54 0x55 0x56 0x57 0x58 0x59 0x5A 0x5B 0x5C 0x5D 0x5E 0x5F 0x60 0x61 0x62 0x63 0x64 0x65 Description MONOTONIC_COUNTER WATCH_DOG_TIMER SECURITY_STUB DXE_CPU_IO - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 166
Code 0x66 0x67 0x68 0x69 0x6A 0x6B 0x6C 0x6D 0x6E 0x6F 0x70 0x71 0x72 0x73 0x74 0x75 0x76 0x77 0x78 0x79 0x7A 0x7B 0x7C 0x7D 0x7E 0x7F 0x80 0x81 0x82 0x83 0x84 0x85 0x86 0x87 0x88 0x89 0x8A 0x8B 0x8C 0x8D 0x8E 0x8F 0x90 BIOS_KEYBOARD BIOS_VEDIO MONITER_KEY LEGACY_BIOS LEGACY_BIOS_PLATFORM - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 167
Code 0x91 0x92 0x93 0x94~0x9F 0xA0 0xA1 0xA2 0xA3 0xA4 0xA5 0xA6 0xA7 0xA8 0xA9 0xAA 0xAB 0xAC 0xAD 0xAE 0xAF 0xB0 0xB1 Description DXE_0x91 PXE_BC PXE_DHCP4 EBC RESERVED DXE_H2O_DEBUG_IO DXE_H2O_DEBUG_IO DXE_TPM_TCG DXE_TPM_PHYSICAL_PRESENCE DXE_OEM_SERVICE DXE_EVENT_LOG DXE_ - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 168
Each SmmDriver entry point used in 80_PORT Code 0xC0 0xC2 0xC1 0xC3 0xC4 0xC5 0xC6 0xC7 0xC8 0xC9 0xCA 0xCB 0xCC 0xCD 0xCE 0xCF 0xD0 0xD1 0xD2 0xD3 0xD4 0xD5 0xD6 0xD7 0xD8 0xD9 0xDA Description SMM_ACCESS SMM_CONTROL SMM_BASE SMMAP SMMCORE SMM_DISPATCH SMM_START SMM_RUNTIME SB_SMM_DISPATCH - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 169
Battery connector JSMI1 SIM card connector CN23 RJ45 PJ2 DC-IN CN10 USB CN6 Keyboard connector U1 Card Reader Realtek RTSSI59 CN4 TouchPad connector CN2 Clock Generator CN3 LFD connector CN5 Bluetooth RJ45 Ethernet Connector SIM card connector HDD LED Num Lock LED Caps Lock LED Battery - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 170
chipset Atheros ARS114/ARS132 SATA connector CN17 Mii card for 3G/WiMAX CN14 FAN connector U21 CPU N270/N280 U19 CN18 Description Card reader connector RTC connector DIMM connector Fan connector Mini card connector for 3G/ WiMax Mini card for WLAN Item U16 U18 U19 U21 U22 CN13 DIMM connector - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 171
provides you the standard operating procedures of clearing password and BIOS recovery for Aspire one. Aspire one provide one Hardware Open Gap on main board for clearing password check, and one Hotkey for enabling BIOS Recovery. Clearing Password Check Hardware Open Gap Description Item CMOS - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 172
, the system will force the BIOS to enter a special BIOS block, called Boot Block. Steps for BIOS Recovery from USB Storage: Before doing this, prepare the Crisis USB key. The Crisis USB key can be made by executing the Crisis Disk program in another system with Windows XP OS. Follow the steps below - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 173
chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of Aspire one. Refer to this chapter whenever ordering made, it will not be noted on the printed Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from those - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 174
Aspire one Exploded Diagrams Main Assembly 1 2 Item 1 2 Description UPPER CASE ASSY BLACK W/TP FFC FOR BT WF UPPER CASE ASSY BLACK W/TP FFC FOR BT WF 3G UPPER CASE ASSY BLACK W/TP FFC FOR WF UPPER CASE ASSY BLACK W/TP FFC FOR WF 3G TouchPad FFC Part Number 60.S7507.001 60.S6507.001 60.S7507.002 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 175
FOR SSD/HDD1.8 BT WF 3G LOWER CASE ASSY BLACK W/SPEAKER FOR SSD/HDD1.8 WF LOWER CASE ASSY BLACK W/SPEAKER FOR SSD/HDD1.8 WF 3G LOWER CASE ASSY BLACK W/SPEAKER BT CABLE FOR HDD2.5 BT WF LOWER CASE ASSY BLACK W/SPEAKER BT CABLE FOR HDD2.5 BT WF 3G LOWER CASE ASSY BLACK W/SPEAKER FOR HDD2.5 WF LOWER - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 176
LCD Assembly 1 2 Item 1 2 Description LCD COVER ASSY BLACK W/WL ANTENNA LCD COVER ASSY BLACK W/3G WLAN ANTENNA Name Plate Part Number 60.S7507.005 60.S6507.005 166 Chapter 6 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 177
Aspire one FRU List CATEGORY ADAPTER BATTERY BOARD PARTNAME ADAPTER LITE-ON 30W 1.7X5.5X11 BLACK PA-1300-04AC LF ADAPTER DELTA 30W 19V 1.7X5.5X11 BLACK ADP-30JH BA LF ADAPTER HIPRO 30W 19V 1.7X5.5X11 BLACK HP-A0301R3 B1LF LF Battery SIMPLO UM-2009A Li-Ion 3S1P PANASONIC 3 cell 2200mAh Main COMMON - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 178
.S6507.002 50.S6507.003 BLUETOOTH CABLE 50.S6507.004 CASE/COVER/BRACKET ASSEMBLY UPPER CASE ASSY BLACK W/TP FFC FOR BT WF UPPER CASE ASSY BLACK W/TP FFC FOR BT WF 3G UPPER CASE ASSY BLACK W/TP FFC FOR WF UPPER CASE ASSY BLACK W/TP FFC FOR WF 3G LOWER CASE ASSY BLACK W/SPEAKER BT CABLE FOR - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 179
WL ANTENNA LCD COVER ASSY BLACK W/3G WLAN ANTENNA LCD BEZEL ASSY BLACK ACERPARTNO. 60.S7507.005 60.S6507.005 60.S6507.006 LCD HINGE W/ BRACKET - R LCD HINGE W/ BRACKET - L HINGE COVER BLACK - L HINGE COVER BLACK - R HDD/HARD DISK DRIVE/SATA HDD/HARD DISK DRIVE Flash Disk SAMSUNG Flash Module NAND - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 180
-FV1 BLACK MACLES 85KS BLACK UK KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK TURKISH KEYBOARD 8KB-FV1 BLACK MACLES 84KS BLACK THAILAND KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK SWISS/G KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK SWEDISH KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK SPANISH KEYBOARD 8KB-FV1 BLACK - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 181
Chapter 6 PARTNAME KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK ARABIC/ FRENCH KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK LUXEMBOURGISH KEYBOARD 8KB-FV1 BLACK MACLES 84KS BLACK ISRAEL KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK IRISH KEYBOARD 8KB-FV1 BLACK MACLES 85KS BLACK FINNISH KEYBOARD 8KB-FV2 WHITE - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 182
HDD FOR 3G W/CARD SD READER W/O RAM MAINBOARD N280 945GSE ICH7M HDD FOR 3G W/CARD SD READER W/O RAM MAINBOARD N270 945GSE ICH7M HDD NON 3G W/CARD SD READER W/O RAM MAINBOARD N280 945GSE ICH7M HDD NON 3G W/CARD SD READER W/O RAM MB.S6506.001 MB.S6506.002 MB.S7506.001 MB.S7506.002 Memory NANYA SO - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 183
PARTNAME ACERPARTNO. 23.S6507.001 MISCELLANEOUS Screw List Category Screw LCD BEZEL RUBBER RUBBER FOOT - BACK RUBBER FOOT - FRONT L RUBBER FOOT - FRONT R ACER ASPIRE ONE MOUSE MS_A1 BLACK 47.S0207.001 47.S6507.001 47.S6507.002 47.S6507.003 MS.20700.008 Description SCREW M2.0*5.0-I (NI) SCREW M2 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 184
Appendix A Aspire one Series Model AO531f-0BG RO WW Country WW AO531h-1B AAP Philippines AO531h-0B AAP Vietnam AO531h-1B AAP Vietnam AO531h-1B AAP Malaysia AO531h-1B AAP Australia/ New Zealand AO531h-1B AAP Singapore AO531h-1B AAP Indonesia AO531h-1B AAP India AO531h-1B - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 185
-1B AO531h-0B AO531h-0B AO531h-1B AO531h-1B AO531h-0B AO531h-0B AO531h-0B AO531h-0B AO531h-0B AO531h-0B RO AAP Country Vietnam AAP Singapore AAP Indonesia AAP Malaysia AAP Thailand AAP Australia/ New Zealand AAP Philippines AAP India AAP Malaysia AAP Thailand AAP Vietnam Acer - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 186
-1BG RO WW Country GCTWN AO531h-1BG WW WW AO531h-1BG WW WW AO531h-1BG WW WW AO531h-1BG WW WW AO531h-0BG AAP Australia/ New Zealand AO531h-1BG AAP Philippines AO531h-1BG AAP Thailand AO531h-1BG WW GCTWN AO531h-1BG AAP Singapore AO531h-0BG AAP Singapore Acer Part No S2.S650B.003 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 187
MC UMAGCkk 1*1G/160/3L/ CB_bg_0.3D_3G_FR22 AO531h-0BG AOXPHSTHU1 MC UMAGCkk 1*1G/160/3L/ CB_bg_0.3D_3G_HU14 CPU ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN280B ATMN270B ATMN270B ATMN270B Bluetooth N N N N N N N N N N BT 2.0 N N N 177 Appendix - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 188
1BG AAP Australia/ New Zealand AO531h-1BG AAP Malaysia AO531h-0BG EMEA Norway AO531h-1BG AAP Indonesia AO531h-1BG AAP Singapore AO531h-0BG EMEA Eastern Europe AO531h-0BG EMEA Eastern Europe AO531h-0BG EMEA Holland AO531h-0BG EMEA Belgium AO531h-0BG EMEA Greece Acer Part No LU.S650B - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 189
MC UMAGCkk 1*1G/160/3L/ CB_bg_0.3D_3G_FR22 AO531h-0BG AOXPHSTHU1 MC UMAGCkk 1*1G/160/3L/ CB_bg_0.3D_3G_HU14 CPU ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN270B ATMN280B ATMN270B ATMN270B ATMN270B Bluetooth N N N N N N N N N N BT 2.0 N N N 177 Appendix - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 190
AO531h-0BG EMEA Turkey AO531h-0BG EMEA Finland AO531h-0BG EMEA Ukraine AO531h-1BG CHIN A China AO531h-1BG WW GCTWN AO531h-1BG WW GCTWN Acer Part No LU.S650B.002 LU.S650B.006 LU.S650B.021 LU.S650B.003 LU.S650B.001 S2.S650B.005 S2.S650B.001 Description AO531h NLED10.1WSVGAG Memory 1 SO1GBII6 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 191
AO531h-1BG AO531h-1BG AO531h-1BG AO531h-1BG AO531h-1BG AO531h-0BG AO531h-1BG AO531h-1BG AO531h-1BG AO531h-1BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-1BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h-0BG AO531h Memory - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 192
AO531h-0BG EMEA Turkey AO531h-0BG EMEA Finland AO531h-0BG EMEA Ukraine AO531h-1BG CHIN A China AO531h-1BG WW GCTWN AO531h-1BG WW GCTWN Acer Part No LU.S650B.002 LU.S650B.006 LU.S650B.021 LU.S650B.003 LU.S650B.001 S2.S650B.005 S2.S650B.001 Description AO531h NLED10.1WSVGAG Memory 1 SO1GBII6 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 193
Windows® XP Home, Windows® XP Pro environment. Refer to the following lists for components, adapter cards, and peripherals which have passed these tests. Regarding configuration, combination and test procedures, please refer to the Aspire one series Compatibility Test Report released by the Acer - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 194
Windows XP Environment Test BOM_Name 3G AO531f_UMA GCkk AO531f_UMA GCkk AO531h_UMA GCkk AO531h_UMA 2200mAh Main COMMON white Battery SONY UM-2009A Li-Ion 3S1P SONY 3 cell 2200mAh Main COMMON black Battery SONY UM-2009AW Li-Ion 3S1P SONY 3 cell 2200mAh Main COMMON white Battery PANASONIC UM-2009A Li- - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 195
SANYO UM-2009B Li-Ion 3S2P SANYO 6 cell 5200mAh Main COMMON black Battery SANYO UM-2009BW Li-Ion 3S2P SANYO 6 cell 5200mAh Main COMMON white, ID: UM09B34 Battery SONY UM-2009B Li-Ion 3S2P SONY 6 cell 5200mAh Main COMMON black Battery SONY UM-2009BW Li-Ion 3S2P SONY 6 cell 5200mAh Main COMMON white - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 196
SANYO UM-2009B Li-Ion 3S2P SANYO 6 cell 5200mAh Main COMMON black Battery SANYO UM-2009BW Li-Ion 3S2P SANYO 6 cell 5200mAh Main COMMON white, ID: UM09B34 Battery SONY UM-2009B Li-Ion 3S2P SONY 6 cell 5200mAh Main COMMON black Battery SONY UM-2009BW Li-Ion 3S2P SONY 6 cell 5200mAh Main COMMON white - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 197
SAMSUNG 6 cell 5200mAh Main COMMON white, SDI 2.6 C Battery SIMPLO UM-2009BW Li-Ion 3S2P LGC 6 cell 5200mAh Main COMMON white, LGC 2.6 B3 Foxconn Bluetooth FOX_BRM_2.0 F/W 300 Foxconn Bluetooth FOX_BRM_2.0 F/W 300 Foxconn Bluetooth FOX_BRM_2.0 F/W 300 Suyin Camera Rose_2G Suyin Camera Rose_2G 187 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 198
TOSHIBA TOSHIBA HGST AO531h_UMA HGST GCkk AO531h_UMA GCkk Keyboard AO531f_UMA GCkk AO531f_UMA GCkk WD None None Type N160GB5.4KS N160GB5.4KS N160GB5.4KS N160GB5.4KS N160GB5.4KS 8KB-FV1 Black L8KB-FV1 Black Description Suyin Camera Rose_2G CPU Intel Atom N270 1.6G 512K 533 2.5W CPU Intel Atom - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 199
CMO Appendix B Type 8KB-FV1 Black L8KB-FV1 Black 8KB-FV1 Black L8KB-FV1 Black AR8114 AR8114 AR8114 Description Keyboard 8KB-FV1 Black Macles Standard Keyboard 8KB-FV1L Black Macles Standard Linux Keyboard 8KB-FV1 Black Macles Standard Keyboard 8KB-FV1L Black Macles Standard Linux Atheros AR8114 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 200
SO-DIMM DDRII 667 1GB HMP112S6EFR6C-Y5 LF 64*16 0.055um Memory SAMSUNG SO-DIMM DDRII 667 512MB M470T6464QZ3-CE6 LF MOUSE-A1 MOUSE-A1 MOUSE-A1 Acer Aspire one Mouse MS_A1 Black Acer Aspire one Mouse MS_A1 Black Acer Aspire one Mouse MS_A1 Black 945GSE NB Chipset Intel CS QG82945GSE MM#897840 190 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 201
BOM_Name Vendor AO531h_UMA INTEL Ckk AO531h_UMA INTEL GCkk Southbridge Chipset AO531f_UMA Intel GCkk AO531h_UMA Intel Ckk AO531h_UMA Intel GCkk Software AO531f_UMA GCkk AO531h_UMA Ckk AO531h_UMA GCkk VGA Chip AO531f_UMA GCkk None AO531h_UMA None Ckk AO531h_UMA None GCkk WiFi Antenna - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 202
192 Appendix B - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 203
and valuable support resources whenever you need them. In the Technical Information section you can download information on all of Acer's Notebook, Desktop and Server models including: • Service guides for all models • User's manuals • Training materials • Bios updates • Software utilities - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 204
194 Appendix C - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 205
102 3G Module Removing 48 Replacing 135 A Antennas Removing 98 Replacing 102 B Battery Replacing 138 Battery Pack Removing 42 BIOS ROM size 17 ROM type 17 vendor 17 Version 17 BIOS Utility 21-29 Advanced 24 Boot 27 Exit 28 Navigating 21 Save and Exit 28 Security 24 System Security 28 Bluetooth - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 206
Locations 159 Top View 159 K Keyboard Removing 51 Replacing 134 Keyboard Failure 143 L LCD Bezel Removing 90 Replacing 109 LCD Brackets Removing 95 Replacing 105 LCD Cable Replacing 105 LCD Failure 143 LCD Module Removing 63 Replacing 124 LCD Module Disassembly Flowchart 89 LCD Module Reassembly 102 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 207
Pad 144 USB 148 WLAN 149 U Undetermined Problems 150 Upper Cover Removing 54 Replacing 130 Upper Cover Disassembly Flowchart 50 Upper Cover Reassembly Process 124 USB Failure (Rightside) 148 utility BIOS 21-29 V volume hotkeys 13 W Windows 2000 Environment Test 184 Wireless Function Failure 149 - Acer Aspire One AO531h | Aspire One AO531h Service Guide - Page 208
198