Acer Aspire 4720z 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 Modem Card Connector 22 PJ1 Battery Connector
11 CN27 SATA HDD Connector 23 CN15 Fan Connector
12 U28 Consumer Infrared Receiver
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							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 recording.
10 Display screen Also called Liquid-Crystal Display (LCD), 
displays computer output.
11 WWW/E-mail/User-
programmable buttonsButtons to launch your internet browser, e-
mail reader, or a specified application.
12 Power button Turns the computer on and off.
13 Empowering button Launches the Empowering Technology 
toolbar.
14
Bluetooth
®  
communication button/
indicatorEnables/disables the Bluetooth® function. 
Indicates the status of Bluetooth 
communication.
15 Palmrest Comfortable support area for your hands 
when you use the computer.
#IconItemDescription
1 Power indicator Indicates the computer’s power status.
2 Battery indicator Indicates the computer’s battery status.
3 Infrared port Interfaces with infrared devices (e.g, 
infrared printer and IR-aware computer).
4 Line-in jack Accepts audio line-in devices (e.g., audio 
CD player, stereo walkman).
5 Microphone-in jack Accepts input from external microphones.
Easy-launch buttons on page 18
# Icon Item Description # Item Description 
						

							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 Ethernet 10/100/1000-
based network (for selected models).
5 Modem (RJ-11) port Connects to a phone line.
6 2 USB 2.0 ports Connect to USB 2.0 devices (e.g., USB 
mouse, USB camera).
7 Express Card slot Accepts one Express Card, 54mm or 
34mm types.
8 5-in-1 card reader Accepts Secure Digital (SD), 
MultiMediaCard (MMC), Memory Stick 
(MS), Memory Stick PRO (MS PRO), xD-
Picture Card (xD).
Easy-launch buttons on page 18
# Icon Item Description # Item Description
# Icon Item Description
Note: 
						

							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 adapter.
7 Kensington lock slot Connects to a Kensington-compatible 
computer security lock.
#IconItemDescription
1 Ventilation slot Enable the computer to stay cool, even 
after prolonged use. 
						

							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 Houses the computer’s hard disk and main memory. 
						

							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 programmable buttons (Web browser button, mail 
button, and Empowering key), run the Acer Launch Manager. 
IconFunctionDescription
HDD Indicates when the hard disc or optical drive is active.
Num lock Lights when Num Lock is activated.
Cap lock Lights when Cap Lock is activated
Power Lights up when the computer is on.
Battery Lights up when the battery is being charged.
Bluetooth Indicates the status of Bluetooth communication.
Wireless LAN Indicates the status of wireless LAN communication.
Icon Function Description 
						

							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 
applications.
NOTE: When using the touchpad, keep it - and your fingers - dry and clean. The touchpad is sensitive to finger 
movements; hence, the lighter the touch, the better the response. Tapping too hard will not increase the 
touchpad’s responsiveness.
Launch keyDefault application
Acer Empowering Technology (user-programmable)
Web browser Internet browser (user-programmable)
Mail Email application (user-programmable)
Arcade Acer Arcade utility
FunctionLeft Button (1)Main Touchpad (2)4-Way Scroll 
Button (3)Right Button (4)
Execute Click twice quickly Tap twice (at the 
same speed as 
double-clicking the 
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
Scroll Click and hold to 
move up/down/left/
right. 
						

							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 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.