Acer Aspire 4720 Service Guide

Chapter 15
Board Layout
Top View
1 CN1 LVDS Connector 8 U17 Audio Codec (ALC 268)
2 CN2 Switch Board Connector 9 CN9 Audio Board Connector
3 U2 BCM5787 10 CN7 Microphone Connector
4 U6 South Bridge (ICH8M) 11 CN5 Speaker Connector
5 U8 PCI Card Reader Controller 
(RICOH R5C833)12 CN6 Bluetooth Connector
6 CN8 Express Card Socket 13 CN3 Keyboard Connector
7 U13 Winbond Keyboard Controller 
(WPC9769LDG)14 CN4 Touchpad Connector
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6Chapter 1
Bottom View
1 CN10 VGA Connector 13 U26 Clock Generator
2 CN11 S-Video Connector 14 CN26 Optical Disk Drive Connector
3 CN13 Ethernet Controller (BCM5787) 15 CN18 DIMM Socket
4 U20 LAN Transform 16 CN19 DIMM Socket
5 CN16 RJ45/RJ11 Jack 17 U22 North Bridge (965PM/GM)
6 CN17 Modem Cable Connector 18 CN20 MXM Connector (for selected 
models only)
7 CN21 USB Connector 19 U21 CPU Socket
8 CN22 USB Connector 20 CN14 Mini Card Socket
9 CN28 5-in-1 Card Reader 21 CN12 Power Board Connector
10 CN31...

Chapter 17
Your Acer Notebook tour
After knowing your computer features, let us show you around your new Aspire computer.
Front View
#IconItemDescription
1 Built-in camera 0.3 megapixel web camera for video 
communication.
2 Status indicators Light-Emitting Diodes (LEDs) that light up 
to show the status of the computer’s 
functions and components.
3 Speaker Left and right speakers deliver stereo audio 
output. 

8Chapter 1
Closed Front View
4 Wireless communication 
button/indicatorEnables/disables the wireless function. 
Indicates the status of wireless LAN 
communication.
5 Keyboard For entering data into your computer.
6 Touchpad Touch-sensitive pointing device which 
functions like a computer mouse.
7 4-way scroll button To scroll up, down, left, and right.
8 Click buttons (left and 
right)The left and right buttons function like the 
left and right mouse buttons.
9 Microphone Internal microphone for sound...

Chapter 19
Left View
6 Headphones/speaker/
line-out jack with S/PDIF 
supportConnects to audio line-out devices (e.g., 
speakers, headphones).
7 Volume control Increases and decreases the volume.
#IconItemDescription
1 External display (VGA) 
portConnects to a display device (e.g., external 
monitor, LCD projector).
2 S-video/TV-out (NTSC/
PAL) port Connects to a television or display device 
with S-video input.
3 4-pin IEEE 1394 port Connects to IEEE 1394 devices.
4 Ethernet (RJ-45) Connects to an...

10Chapter 1
Right View
Rear view
#IconItemDescription
1 Optical drive Internal optical drive; accepts CDs or DVDs 
(slot-load or tray-load depending on 
model).
2 Optical disk access 
indicatorLights up when the optical drive is active.
3 Optical drive eject 
buttonEjects the optical disk from the drive.
4 Emergency eject hole Ejects the optical drive tray when the 
computer is turned off.
5 2 USB 2.0 ports Connect to USB 2.0 devices (e.g., USB 
mouse, USB camera).
6 DC-in jack Connects to an AC...

Chapter 111
Base view
Indicators
The computer has several easy-to-read status indicators. 
The front panel indicators are visible even when the computer cover is closed up.
#ItemDescription
1 Battery bay Houses the computer’s battery pack.
2 Battery lock Locks the battery in position.
3 Battery release latch Releases the battery for removal.
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 Back panel...

12Chapter 1
NOTE: 1. Charging: The light shows amber when the battery is charging. 2. Fully charged: The light shows 
green when in AC mode.
Easy-Launch Buttons
To the right of the keyboard there are three easy-launch buttons: Web browser, mail, and arcade buttons. You 
can also find an Empowering Key “  located above the keyboard.
Press “  “ to run the Acer Empowering Technology. The mail and Web browser buttons are pre-set to email 
and Internet programs, but can be reset by users. To set the...

Chapter 113
Touchpad Basics
The following teaches you how to use the touchpad:
TMove your finger across the touchpad (2) to move the cursor. 
TPress the left (1) and right (4) 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.
TUse the 4-way scroll (3) buton to mimic your cursor pressing on the right scroll bar of Windows...

14Chapter 1
Using the Keyboard
The keyboard has full-sized keys and an embedded keypad, separate cursor keys, one Windows key and 
twelve function 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...