Acer Travelmate 520 Service Guide

Chapter 125
Supply voltage for LCD backlight 
(Vrms)550 (typ.) 601 (typ.) 670 (typ.) 670 (typ.)
AC Adapter
ItemSpecification
Vendor & model name Delta ADT-60XB D 3P LiteOn PA-1600-02
Input Requirements
Maximum input current  1.5A @ 90Vac
0.9A @ 180Vac1.5A @ 90Vac
0.95A @ 180Vac
Nominal frequency (Hz) 47 - 63 47 - 63
Frequency variation range (Hz) 47 - 63 47 - 63
Nominal voltages (V) 90 - 270 90 - 270
Inrush current The maximum inrush current will be 
less than 50A and 100A when the 
adapter is connected...

26Chapter 1
Power Management
Power Saving ModePhenomenon
Standby Mode
TWaiting time specified by the 
System Standby value or the 
operating system elapses without 
any system activity.
TClosing the display cover
TWhen the computer is about to 
enter Hibernation mode (e.g., 
during a battery-low condition), 
but the Hibernation file is invalid 
or not present.
TWhen customized functions for 
power management are set to 
Standby and the corresponding 
action is taken.  
TInvoked by the operating system...

Chapter 127
Mechanical Specifications
ItemSpecification
Dimensions 310 (W) x 255 (D) x 36.6 (H) mm
Weight 6.1 lbs for 12.1” TFT
6.39 lbs for 14.1” TFT
I/O Ports One type III or two type II/I PCMCIA (PC Card) port, two USB ports, one RJ-11 
port, one RJ-45 port, one DC-in port, one expansion port, one parallel port, 
one serial port, one external display port, one PS/2 keyboard/mouse port, 
one FIR port, one line-in jack, one speaker/headphone-out jack, 
one microphone-in jack
Drive Bays One
Material...

28Chapter 1
278-27F Parallel port 3
2E8-2EF Lucent Technologies Soft Modem AMR
2F8-2FF ALi Fast Infrared Controller
378, 37F Printer Port (LPT 1)
3B0-3BB, 3C0-3DF Video Controller 
3F0-3F5/3F7 Standard Floppy Disk Controller
3E8-3EF COM3
3F8-3FF COM1 or LT Win modem (optional)
480-48F, 4D6  DMA controller-1
4D0-4D1, CF8-CFF PCI configuration register
IRQ Assignment Map
Interrupt ChannelFunction
NMI System errors
IRQ0 System timer
IRQ1 Keyboard
IRQ2 Cascade
IRQ3 IrDA
IRQ4 COM1
IRQ5 Reserved
IRQ6 Floppy...

Chapter 229
BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/
Output System).
Your computer is already properly configured and optimized, and you do not need to run this utility.  However, 
if you encounter configuration problems, you may need to run Setup.  Please also refer to Chapter 4 
Troubleshooting when problem arises.
To activate the BIOS Utility, press F2
 during POST (while the TravelMate logo is being displayed)....

30Chapter 2
System Information
The System Information screen displays a summary of your computer hardware information.
NOTE: 
The screen above is a sample and may not reflect the actual data on your computer.  “X” may refer to a 
series of numbers and/or characters.
The following table describes the information in this screen.
The items in this screen are important and vital information about your computer.  If you experience computer 
problems and need to contact technical support, this data helps our...

Chapter 231
Basic System Settings
The Basic System Settings screen allows you to set the system date and time.
The following table describes the parameters in this screen.
Startup Configuration
The Startup Configuration screen contains parameter values that define how your computer behaves on 
system startup.
ParameterDescriptionFormat
Date Sets the system date. DDD MMM DD, YYYY 
(day-of-the-week month day, year)
Time Sets the system time. HH:MM:SS (hour:minute:second) 

32Chapter 2
The following table describes the parameters in this screen.  Settings in boldface are the default and 
suggested parameter settings.
Setting the Boot Drive Sequence
The Boot Drive Sequence section lists boot priorities (1st, 2nd, 3rd and 4th) for bootable drives in your 
computer.
For example, the default value (1st:Floppy Disk, 2nd:CD-ROM, 3rd:Hard Disk and 4th:LANDesk (R) Service 
Agent) tells the computer to first search for a bootable floppy disk in the floppy drive.  If it finds one...

Chapter 233
Onboard Device Configuration
The parameters in this screen are for advanced users only.  You do not need to change the values in this 
screen because these values are already optimized.
The Onboard Device Configuration screen assigns resources to basic computer communication hardware.
The following table describes the parameters in this screen.  Settings in boldface
 are the default and 
suggested parameter settings.
ParameterDescriptionOptions
Serial Port Enables or disables the serial...

34Chapter 2
System Security
The System Security screen contains parameters that help safeguard and protect your computer from 
unauthorized use.
The following table describes the parameters in this screen.  Settings in boldface
 are the default and 
suggested parameter settings.
Setting a Password
Follow these steps: 
1.
Use the cursor up/down keys to highlight a Password parameter (Setup, Power-on or Hard Disk) and 
press the Enter
 key.  The password box appears:
2.
Type a password.  The password may...