Acer Aspire 1820pt Service Guide

							Chapter 11
System Specifications
Features
Below is a brief summary of the computer’s many features:
Operating System
• Genuine Windows® 7
Platform
• Intel® Core™2 Duo processor*
• Intel® Pentium® mobile processor*
• Intel® Celeron® mobile processor*
• Mobile Intel® GS45 Express Chipset
System Memory
• Dual-Channel SDRAM support
• Up to 4 GB of DDR3 1066 MHz memory, upgradeable to 8 GB using two soDIMM modules
Display and graphics
• 11.6 HD 1366 x 768
• Convertible display
• Mobile Intel® GS45 Express Chipset
Storage subsystem
• 2.5 hard disk drive
• Multi-in-1 card reader
Audio subsystem
• Optimized 2nd Generation Dolby® Sound Room® audio enhancement
• High-definition audio support
• S/PDIF (Sony/Philips Digital Interface) support for digital speakers
• MS-Sound compatible
• Built-in microphone
Communication
• Integrated Acer Crystal Eye webcam*
• WWAN: UMTS/HSPA at 850/900/1900/2100 MHz and quad-band GSM/GPRS/EDGE (850/900/
1800/1900 MHz)*
Chapter 1 
						

							2Chapter 1
•WLAN:
• Intel® WiFi Link 5100 802.11a/b/g/Draft-N*
• Intel® WiFi Link 5100 802.11a/b/g*
• Intel® WiFi Link 1000*
• WPAN: Bluetooth® 2.1+Enhanced Data Rate*
• LAN: Gigabit Ethernet; Wake-on-LAN ready
Privacy control
• BIOS user, supervisor, HDD passwords
• Kensington lock slot
Dimensions and Weight
• 285 (W) 208.9 (D) 28.5/34.5 (H) mm (11.22 x 8.22 x 1.12/1.36 inches)
• 1.72 kg (3.79 lbs.) (non-3G SKU)
Power subsystem
•ACPI 3.0
• 62.16 W 5600 mAh
• 3-pin 30 W AC adapter
• ENERGY STAR®*
Special keys and controls
• 84-/85-/88-key keyboard
• Multi-gesture touchpad pointing device
I/O interface
• Multi-in-1 card reader (SD/MMC/MS/MS PRO/xD)
• USB 2.0 port
• HDMI™ port with HDCP support
• External display (VGA) port
• Headphones/speaker/line-out jack with S/PDIF support
• Microphone-in jack
• Ethernet (RJ-45) port
• DC-in jack for AC adapter
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%
NOTE: The specifications listed above are for reference only. The exact configuration of the PC 
depends on the model purchased. 
						

							Chapter 13
System Block Diagram 
						

							4Chapter 1
Your Notebook Tour
This section provides an overview of the features and functions of the notebook.
Front View
No.IconItemDescription
1 Acer Crystal Eye 
webcamWeb camera for video communication
2 Display screen Also called Liquid-Crystal Display (LCD), displays 
computer output (Configuration may vary by 
models).
3 P Programmable 
keyLaunch predefined programs or user defined 
programs at the push of a button.
4 Backup key Press to start automatic backup procedure.
5 HDD Indicates when the hard drive is active.
Num Lock Lights up when the Num Lock is activated.
Caps Lock Lights up when Caps Lock is activated.
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							Chapter 15
Closed Front View
6 Power Indicated the computer’s power status.
Battery Indicates the computers battery status.
1. Charging: The light shows amber when the 
battery is charging.
2. Fully charged: The light shows blue when in AC 
mode.
Bluetooth 
communication 
indicatorIndicates the status of Bluetooth communication. 
(only for certain models)
Communication 
indicatorIndicates the status of WLAN / 3G communication.
7 Click buttons (left 
and right)The left and right buttons function like the left and 
right mouse buttons.
8 Touchpad Touch-sensitive pointing device which functions like 
a computer mouse.
9 Palmrest Comfortable support area for your hands when you 
use the computer.
10 Keyboard For entering data into your computer.
11 Stylus A pen tool for entering data into your computer
12 Microphone Internal microphone for sound recording
13 Magnetic lock A lock that snaps into place to prevent the screen 
from inadvertently rotating.
No.IconItemDescription
1 Communication 
keyEnables / disables the WLAN / 3G functions.
2 Speakers Left and right speakers deliver stereo audio 
output.
No.IconItemDescription
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							6Chapter 1
Left View
Right View
No.IconItemDescription
1 External display 
(VGA) portConnects to a display device (e.g. external 
monitor, LCD projector).
2 DC-in jack Connects to an AC adapter
3 Ventilation slots Enable the computer to stay cool, even after 
prolonged use.
4
HDMIHDMI port Supports high definition digital video 
connections.
5 USB 2.0 port Connect to USB 2.0 devices (e.g., USB mouse, 
USB camera).
No.IconItemDescription
1 Multi-in-1 card 
readerAccepts 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.
2 Headphones/
speaker/line-out 
jack with
S/PDIF supportConnects to audio line-out devices (e.g., 
speakers, headphones).
Microphone-in 
jackAccepts inputs from external microphones.
3 USB 2.0 port Connects to USB 2.0 devices
(e.g., USB mouse, USB camera).
4 Power button / 
indicatorSlide the power button to turn the computer on 
and off. / Indicates the computers power 
status.
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							Chapter 17
Base View
5 Kensington lock 
slotConnects to a Kensington-compatible 
computer security lock.
Note: Wrap the computer security lock cable 
around an immovable object such as a table or 
handle of a locked drawer. Insert the lock into 
the notch and turn the key to secure the lock. 
Some keyless models are also available.
6 Ethernet (RJ-45) 
portConnects to an Ethernet 10/100/1000-based 
network.
No.IconItemDescription
1 Battery bay Houses the computers battery pack.
2 Hard disk bay Houses the computers hard disk (secured with 
screws).
3 Memory 
compartmentHouses the computers main memory.
4 Ventilation slots 
and cooling fanEnable the computer to stay cool, even after 
prolonged use.
Note: Do not cover or obstruct the opening of the fan.
5 Battery lock Locks the battery in position.
6 Battery release 
latchReleases the battery for removal.
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							8Chapter 1
Rear View
Indicators
The computer has several easy-to-read status indicators. The battery indicator is visible even when the 
computer cover is closed.
NOTE: 1. Charging: The battery light shows amber when the battery is charging. 2. Fully charged: The light 
shows green when in AC mode.
No.IconItemDescription
1 Battery bay Houses the computers battery pack.
Icon Function Description 
Bluetooth  Indicates the status of Bluetooth communication. 
Wireless LAN  Indicates the status of Wireless LAN/3G communication. 
HDD  Indicates when the hard disk drive is active. 
Num Lock  Lights up when Num Lock is activated. 
Caps Lock  Lights up when Caps Lock is activated. 
Battery  Indicates the computers battery status. 
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							Chapter 19
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.
NOTE: When using the TouchPad, 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.
FunctionLeft Button (2)Right Button (3)Main TouchPad (1)
Execute Quickly click twice. Tap twice (at the same speed 
as double-clicking a mouse 
button).
Select Click once. Tap once.
Drag Click and hold, then use 
finger on the TouchPad to 
drag the cursor.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.
Access 
context menuClick once.
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							10Chapter 1
Using the Keyboard
This computer 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.
The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by small characters 
located on the upper right corner of the keycaps. To simplify the keyboard legend, cursor-control key symbols 
are not printed on the keys.
Lock keyDescription
Caps Lock When 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. The keys 
function as a calculator (complete with the arithmetic operators +, -, *, and /). Use 
this mode when you need to do a lot of numeric data entry. A better solution 
would be to connect an external keypad.
Scroll Lock  + 
When Scroll Lock is on, the screen moves one line up or down when you press 
the up or down arrow keys respectively. Scroll Lock does not work with some 
applications.
Desired accessNum Lock onNum Lock off
Number keys on 
embedded keypadType numbers in a normal manner.
Cursor-control keys on 
embedded keypadHold  while using cursor-
control keys.Hold  while using cursor-
control keys.
Main keyboard keys Hold  while typing letters on 
embedded keypad.Type the letters in a normal 
manner.