Acer Aspire 7420 Service Guide

Chapter 11
Features
Below is a brief summary of the computer’s many feature:
Platform and memory
AMD Turion™ 64 X2 dual-core mobile technology TL-66/TL-64/TL-60/TL-56/TL-52 (1 MB L2 cache, 2.3/
2.2/2.0/1.8/1.6 GHz, 1600 MHz HyperTransport™ Bus) (for selected models)
Mobile AMD Sempron™ 3400+ (512 KB L2 cache, 1.8 GHz, 1600 MHz HyperTransport™ Bus) / 3500+ 
(512 KB L2 cache, 1.8 GHz, 1600 MHz HyperTransport™ Bus) / 3600+ (256 KB L2 cache, 2.0 GHz, 
1600 MHz HyperTransport™ Bus) (for selected models)...

2Chapter 1
models)
Optical drive options:
DVD-Super Multi double-layer drive 
DVD/CD-RW combo drive
5-in-1 card reader supporting Secure Digital™ (SD), MultiMediaCard (MMC), Memory Stick® (MS), 
Memory Stick PRO™ (MS PRO), xD-Picture Card™ (xD) 
Input devices
105-/106-key keyboard with inverted T cursor layout, 2.5 mm (minimum) key travel
Seamless touchpad pointing device with Acer Bio-Protection fingerprint reader supporting Acer 
FingerNav 4-way control function (manufacturing option)
Seamless...

Chapter 13
Headphones/speaker/line-out jack
Line-in jack
Microphone jack
Ethernet (RJ-45) port
Modem (RJ-11) port
DC-in jack for AC adaptor
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% 

4Chapter 1
System Block Diagram
CLK GEN.
9 502 ICS LPRS
( 875 -605)RTM T
14.318MHz
AZALIA
DDR II533/667/800
32.768KHz
USB x4
USB
USB
USB PCI E x-4
16 16x
HyperTransport
IN OUT
PCI E x-1PCI E x-1
Finger print
SB600
DDR SODIMM2
DIMM1DIMM2
MINI USB
BlueTooth
USB
4PortCCD M M.3 /1.3
FIR
ATI MXM Card
DVI
AMP
KBCWPC8768Winbond
INT.
KB Touch
Pad
ATI
ATI AMD
Pomona Texcoco Block Diagram/
CodecALC268
DDR SODIMM2Line In
K Rev G8.
S g Socket11
PATALPC BUS
RS M690
DEBUG
CONN.LPC
MDC Card
GQ1432AMP
AZALIA
MODEM...

Chapter 15
Your Acer Notebook tour
After knowing your computer features, let us show you around your new TravelMate computer.
Front View
IconItemDescription
1 Acer CrystalEye 0.3 megapixel web camera for video 
communication.
2 Microphone Internal microphone for sound recording.
3 Display screen Also called Liquid-Crystal Display (LCD), 
displays computer output.
4 Easy-launch 
buttonsButtons for launching frequently used programs. 
5 Palmrest Comfortable support area for your hands when 
you use the...

6Chapter 1
Closed Front View
6 Click buttons (left, 
center* and right) The left and right buttons function like the left 
and right mouse buttons.
*The center button serves as Acer BioProtect 
fingerprint reader supporting Acer FingerNav 4-
way control function (manufacturing option) or a 
4-way scroll button (manufacturing option).
7 Status indicators Light-Emitting Diodes (LEDs) that light up to 
show the status of the computers functions and 
components. 
8 Touchpad Touch-sensitive pointing device...

Chapter 17
Left View
9 Wireless 
communication 
switchEnable/disable the wireless function. Indicates the 
status of wireless LAN communication 
(manufacturing option).
#IconItemDescription
1 Kensington lock slot Connects to a Kensington-compatible 
computer security lock.
2 Ethernet (RJ-45) 
portConnects to an Ethernet 10/100/1000-based 
network.
3 DVI-D DVI-D port Supports digital video connections.
4 External display 
(VGA) portConnects to a display device (e.g., external 
monitor, LCD projector).
5...

8Chapter 1
Right View
Rear Panel
IconItemDescription
1 Optical drive Internal optical drive; accepts CDs or DVDs
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 
holeEjects the optical drive tray when the computer is 
turned off.
#IconItemDescription
1 Three USB 2.0 
portsConnect to USB 2.0 devices (e.g., USB 
mouse, USB camera).
2 Modem (RJ-11) 
portConnects to a phone line.
3 DC-in jack...

Chapter 19
Bottom Panel
Indicators
The computer has several easy-to-read status indicators:
IconItemDescription
1 Second Hard disk 
bayHouses the computer’s optional second hard 
disk. (Secured with a screw).
2Memory 
compartmentHouses the computers main memory.
3 Battery lock Locks the battery in position.
4 Battery release 
latchReleases the battery to remove the battery pack.
5 Battery bay Houses the computers battery pack.
6 Ventilation slots Enable the computer to stay cool, even after 
prolonged...

10Chapter 1
The front panel indicators are visible even when the computer cover is closed.
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
There are several conveniently located easy-launch buttons. They are: mail Web browser, Empowering Key 
“ “and one user-programmable button.
Press “  “ to run the Acer Empowering Technology. The mail and Web browser buttons are pre-set to email 
and Internet programs,...