The information in this guide is subject to change without notice.
Acer Incorporated makes 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. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the
programs prove defective following their purchase, the buyer (and not Acer Incorporated, its 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.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.
III
Conventions
The following conventions are used in this manual:
SCREEN MESSAGESDenotes actual messages that appear
on screen.
NOTEGives bits and pieces of additional
information related to the current
topic.
WARNINGAlerts you to any damage that might
result from doing or not doing specific
actions.
CAUTIONGives precautionary measures to
avoid possible hardware or software
problems.
IMPORTANTReminds you to do specific actions
relevant to the accomplishment of
procedures.
IV
Preface
Before using this information and the product it 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's "global" product offering. To better fit local market requirements and enhance product
competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g.
add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered
in this generic service guide. In such cases, please contact your regional offices or the responsible
personnel/channel to provide you with further technical details.
2.Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel. If, for whatever reason, a part number change is made, it will
not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer
office may have a DIFFERENT part number code to those given in the FRU list of this printed Service
Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and
service of customer machines.
Left View 9
Right View 10
Bottom View 11
11
Indicators 11
TouchPad Basics 13
Using the Keyboard 14
Lock Keys and embedded numeric keypad 14
Windows Keys 15
Hot Keys 16
Hardware Specifications and Configurations 17
System Utilities 25
BIOS Setup Utility 25
Navigating the BIOS Utility 25
Aspire 4820T BIOS 26
Information 26
Main 27
Security 28
Boot 31
Exit 32
BIOS Flash Utilities 33
DOS Flash Utility 34
WinFlash Utility 36
Remove HDD/BIOS Password Utilities 37
Machine Disassembly and Replacement 43
Disassembly Requirements 43
General Information 44
Pre-disassembly Instructions 44
Disassembly Process 44
External Module Disassembly Process 45
External Modules Disassembly Flowchart 45
Removing the Battery Pack 46
Removing the SD dummy card 47
Removing the SIM card 48
Removing the Lower Cover 49
Removing the Optical Drive Module 50
Removing the DIMM Modules 52
Removing the WLAN Module 53
Removing the Hard Disk Drive Module 54
Main Unit Disassembly Process 55
Main Unit Disassembly Flowchart 55
Removing the Keyboard 56
Removing the Upper Cover 58
Removing the Power Switch Board 61
Removing the Function Board 62
Removing the Left Speaker Module 63
1
Removing the USB Board 64
Removing the 3G Module 66
Removing the Bluetooth Module 67
Removing the LCD Module 68
Removing the Mainboard 70
Removing the Thermal Module 72
Removing the CPU 73
Removing the RTC Battery 74
Removing the WiFi Antenna Cable 74
Removing the Right Speaker 75
Removing the DC-In Cable 76
LCD Module Disassembly Process 77
LCD Module Disassembly Flowchart 77
Removing the LCD Bezel 78
Removing the Camera Module 79
Removing the LCD Panel 80
Removing the FPC Cable 81
Removing the Microphone Module 82
Removing the Hinges 82
Removing the Antennas 83
LCD Module Reassembly Procedure 85
Replacing the MIC and WiFi Antennas 85
Replacing the Microphone Module 86
Replacing the FPC Cable 87
Replacing the LCD Panel 87
Replacing the Webcam 88
Replacing the LCD Bezel 89
Main Module Reassembly Procedure 91
Replacing the DC-In Cable 91
Replacing the LCD Module 92
Replacing the Right Speaker 92
Replacing the RTC Battery 93
Replacing the CPU 94
Replacing the Thermal Module 94
Replacing the Mainboard 96
Replacing the Bluetooth Module 97
Replacing the 3G Module 98
Replacing the USB Board 99
Replacing the Left Speaker Module 100
Replacing the Function Board 101
Replacing the Switch Board 101
Replacing the Upper Cover 102
Replacing the Keyboard 105
Replacing the Hard Disk Drive Module 105
Replacing the WLAN Board 107
Replacing the DIMM Modules 107
Replacing the ODD Module 108
Replacing the Lower Covers 109
Replacing the Dummy Card 110
Replacing the SIM card 110
Replacing the Battery Pack 111
Troubleshooting 113
Common Problems 113
Power On Issue 114
2
No Display Issue 115
Random Loss of BIOS Settings 116
LCD Failure 117
Built-In Keyboard Failure 117
TouchPad Failure 118
Internal Speaker Failure 118
HDD Not Operating Correctly 120
ODD Failure 121
Wireless Function Failure 124
Thermal Unit Failure 124
External Mouse Failure 125
Other Failures 125
Intermittent Problems 126
Undetermined Problems 126
Post Codes 127
Jumper and Connector Locations 133
Top View 133
Bottom View 134
Clearing Password Check and BIOS Recovery 135
Office Personal 2007 (Service Pack 2) (Japan only, subject to customer request)
®
Office Trial (Service Pack 2)
®
Works SE 9
®
Works 9
®
Works 8.5
™
Online Backup
®
Internet Security Suite 2009 Trial
Writer)
•Utilities and tools·
•Acer Accessory Store
•Acer Assist·
•Acer Identity Card·
•Acer Registration·
•Acer Updater·
•eBay® shortcut 2009·
•Netflix shortcut1
Optional Items
•Acer Media Center remote control
•1 GB / 2 GB / 4 GB DDR3 1066 MHz soDIMM module
•9-cell Li-ion battery pack
•3-pin 90 W AC adapter
4Chapter 1
•External USB floppy disk drive
•External USB 56K modem
Warranty
•One-year International Travellers Warranty (ITW)
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 15
System Block Diagram
USB board
USB Port X3
USB Port x 1
Bluetooth
CCD
CardReader
AU6437
CLOCK GENERATOR
DDR III
SO-DIMM 0
SO-DIMM 1
HDD (SATA)
ODD (SATA)
Audio CO DEC
RTL ALC271X
Dual Channel
800/ 1066 MHz
SATA0
SATA1
USB 2.0
Azalia
<MCH Processor>
DDR SYSTEM MEMORY
FDI interface
SATA
3.0 GT/s
USB
HDA
SPI
SPI ROM
intel
Arrandale (SG)
rPGA 989
(37.5mm X 37.5mm)
FDI
DMI
DMIFDI
intel
<PCH>
Ibex Peak_M
mBGA 676
(27mm X 25mm)
PCI-E
X16
X4 DMI interface
Graphics Interfaces
RTC
P9
PCI-E
LPC
EC
(NPCE781/783)
PCIE
INT_CRT
INT_LVDS
INT_HDMI
PCI-Express
2.5GT/s
Fan Driver
(PWM Type)
CPU
XDP Conn.
ATI GPU
Madison/Park LP/PRO
1GB
(16 x 64Mb x 8pcs)
HDMI
Atheros
Giga-LAN
Transformer
RJ45
PCIE-1
CLKOUT_PEG_B
X'TAL
27.0MHz
CRT
LVDS
INT_CRT
INT_LVDS
GPU CORE PWR
DISCHARGER
+1.0V/+1.8V
CPU VGFX_AXG
THERMAL
PROTECTION
LVDS_CRT
Switchable
HDMI
Level-shift
PCIE-6PCIE-2
Mini Card
WiFi
USB10
CHARGER
3/5V SYS PWR
CPU CORE PWR
CPU VTT
VTT 1.05V
DDR3 PWR
CRT
LVDS
HDMI
Mini Card
3G
SIM Card FFC
Conn
daughter board
USB13
USB5
1_GEP_TUOKLC2_GEP_TUOKLC
SPDIF/HP
INT MIC
DMIC
SPI ROM Touch PadButton on
Keyboard
mechanical key
6Chapter 1
Your Acer Notebook tour
After knowing your computer features, let us show you around your new computer.
Front View
1
2
3
4
5
6
7
8
No.IconItemDescription
1Acer Crystal Eye
webcam
2MicrophoneInternal microphone for recording sound.
Web camera for video communication
(for selected models).
13
12
11
10
9
3Display screenAlso called Liquid-Crystal Display (LCD),
displays computer output.
Chapter 17
No.IconItemDescription
4HDDIndicates when the hard disk drive is active.
Num Lock
indicator
Caps Lock
indicator
5Power buttonTurns the computer on and off.
6KeyboardFor entering data into your computer.
7T ouchPadT ouch-sensitive pointing device which functions
8Power IndicatorIndicates the computer’s power status.
Battery IndicatorIndicates the computer’s battery status.
Communication
indicator
9Click buttons (left
and right)
10PalmrestComfortable support area for your hands when
11SpeakersLeft and right speakers deliver stereo audio
12Optical drive
eject
button
13Programmable
key
PowerSmart keyPuts your computer into power-saving mode.
Lights up when Num Lock is activated.
Lights up when Caps Lock is activated.
like a computer mouse.
1. Charging: The light shows amber when the
battery is charging.
2. Fully charged: The light shows blue when in
AC mode.
Indicates the computer’s wireless connectivity
device status.
The left and right buttons function like the left
and right mouse buttons.
you use the computer.
output.
Ejects the optical disk from the drive.
User-programmable.
(only for certain models)
(only for certain models)
8Chapter 1
Closed Front View
1
No.IconItemDescription
1Multi-in-1
card reader
Left View
Accepts Secure Digital (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 given time.
2134567
No.IconItemDescription
1Kensington lock
slot
2Ventilation slotsEnable the computer to stay cool, even after
3External display
(VGA) port
4HDMIConnect to HDMI devices
5Ethernet (RJ-45)
port
6USB 2.0 portsConnect to USB 2.0 devices (e.g. USB mouse,
Chapter 19
Connects to a Kensington-compatible
computer security lock.
prolonged use.
Connects to a display device
(e.g. external monitor, LCD projector).
Connects to an Ethernet 10/100/1000-based
network.
USB camera).
No.IconItemDescription
7Microphone-in
jack
Accepts input from external microphones.
Headphones/
speaker/line-out
jack
Connects to audio line-out devices
(e.g. speakers, headphones).
Right View
21345
No.IconItemDescription
1USB 2.0 portsConnect to USB 2.0 devices (e.g. USB mouse,
USB camera).
2Optical driveIn tern al optical drive; accepts CDs or DVDs.
3Optical disk access
indicator
4Emergency eject holeEjects the optical drive tray when the computer is
6DC-in jackConnects to an AC adapter.
Lights up when the optical drive is active.
turned off.
Note: Insert a paper clip into the emergency eject
hole to eject the optical drive tray when the
computer is off.
10Chapter 1
Bottom View
1
2
3
No.IconItemDescription
1Battery bayHouses the computer's battery pack.
2Battery lockLocks the battery in position.
6
5
4
3Hard disk bayHouses the computer's hard disk (secured
with screws).
4Memory
compartment
5Ventilation slots
and cooling fan
6Battery release
latch
Houses the computer's main memory.
Enable the computer to stay cool, even after
prolonged use.
Note: Do not cover or obstruct the fan opening.
Releases the battery for removal.
Indicators
The computer has several easy-to-read status indicators.
IconFunctionDescription
PowerIndicates the computer's power status.
BatteryIndicates the computer's battery status.
NOTE: 1. Charging: The light shows amber when
the battery is charging. 2. Fully charged: The light
shows green when in AC mode.
Chapter 111
IconFunctionDescription
HDDIndicates when the hard disk drive is active.
Communication indicatorIndicates the computer’s wireless connectivity
device status.
12Chapter 1
TouchPad Basics
The following items show you how to use the TouchPad:
•Move your finger across the TouchPad (1) to move the cursor.
•Press the left (2) and right (3) buttons located beneath the TouchPad to perform selection and
execution functions. These two buttons are similar to the left and right buttons on a mouse.
Tapping on the TouchPad is the same as clicking the left button.
ExecuteQuickly click twice.Tap twice (at the same speed
SelectClick once.Tap once.
DragClick and hold, then use
finger on the TouchPad to
drag the cursor.
Access
context menu
as double-clicking a mouse
button).
Tap twice (at the same speed
as double-clicking a mouse
button); rest your finger on
the TouchPad on the second
tap and drag the cursor.
Click once.
NOTE: When using the T ouchPad, keep it - and your fingers - dry and clean. The TouchPad is sensitive to
finger movement; hence, the lighter the touch, the better the response. Tapping too hard will not
increase the TouchPad’s responsiveness.
Chapter 113
Using the Keyboard
The keyboard has full-sized keys and an embedded numeric keypad, separate cursor, lock, Windows, function
and special keys.
Lock Keys and embedded numeric keypad
The keyboard has two lock keys which you can toggle on and off.
Lock keyDescription
Caps LockWhen Caps Lock is on, all alphabetic characters typed are in uppercase.
Num Lock When Num Lock is on, the embedded keypad is in numeric mode.
14Chapter 1
Windows Keys
The keyboard has two keys that perform Windows-specific functions.
KeyDescription
Windows key Pressed alone, this key has the same effect as clicking on the Windows Start button;
it launches the Start menu. It can also be used with other keys to provide a variety of
functions:
<>: Open or close the S tart menu
<> + <D>: Display the desktop
<> + <E>: Open Windows Explore
<> + <F>: Search for a file or folder
<> + <G>: Cycle through Sidebar gadgets
<> + <L>: Lock your computer (if you are connected to a network domain), or
switch users (if you're not connected to a network domain)
<> + <M>: Minimizes all windows
<> + <R>: Open the Run dialog box
<> + <T>: Cycle through programs on the taskbar
<> + <U>: Open Ease of Access Center
<> + <X>: Open Windows Mobility Center
<> + <BREAK>: Display the System Properties dialog box
<> + <SHIFT+M>: Restore minimized windows to the desktop
<> + <TAB>: Cycle through programs on the taskbar by using Windows Flip 3-D
<> + <SPACEBAR>: Bring all gadgets to the front and select Windows Sidebar
<CTRL> +
<CTRL> + <> + <TAB>: Use the arrow keys to cycle through programs on the
Note: Depending on your edition of Windows, some shortcuts may not function as
<> + <F>: Search for computers (if you are on a network)
taskbar by using Windows Flip 3-D
described.
Chapter 115
Hot Keys
The computer employs hotkeys or key combinations to access most of the computer’s controls like screen
brightness, volume output and the BIOS utility.
To activate hot keys, press and hold the <Fn> key before pressing the other key in the hotkey combination.
HotkeyIconFunctionDescription
<Fn> + <F3>Communication keyEnables / disables the computer's
communication devices. (Communication
devices may vary by configuration.)
<Fn> + <F4>SleepPuts the computer in Sleep mode.
<Fn> + <F5>Display toggleSwitches display output between the display
screen, external monitor (if connected) and
both.
<Fn> + <F6>Display OffTurns the display screen backlight off to save
power. Press any key to return.
<Fn> + <F7>Touchpad toggleTurns the internal touchpad on and off.
<Fn> + <F8>Speaker toggleTurns the speakers on and off.
<Fn> + <F11>NumLkTurns the embedded numeric
keypad on or off.
<Fn> + < >Brightness upIncreases the screen brightness.
<Fn> + < >Brightness downDecreases the screen brightness.
<Fn> + < >
<Fn> + < >
<Fn> + <Home>Play/PausePlay or pause a selected media file.
<Fn> + <Pg Up>StopStop playing the selected media file.
<Fn> + <Pg Dn>PreviousReturn to the previous media file.
Volume upIncreases the sound volume.
Volume downDecreases the sound volume.
16Chapter 1
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