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 to 115Vac(60Hz) 
and 230Vac(50Hz) respectivelyThe maximum inrush current will be 
less than 50A and 100A when the 
adapter is connected to 115Vac(60Hz) 
and 230Vac(50Hz) respectively
Efficiency It should provide an efficiency of 83% 
minimum, when measured at maximum 
load under 115V(60Hz)It should provide an efficiency of 83% 
minimum, when measured at maximum 
load under 115V(60Hz)
Output Ratings (CV mode)
DC output voltage 19V - 20.5V 19V - 20.5V
Noise + Ripple 300mVp-pmax (20MHz bandwidth) 300mVp-pmax (20MHz bandwidth)
Load 0 A (min.);   3.16 A (max.) 0 A (min.);   3.16 A (max.)
Output Ratings (CC mode)
DC output voltage +12V ~ +19V +12V ~ +19V
Constant output 3.6 +/- 0.3 3.6 +/- 0.3
Dynamic Output Characteristics
Turn-on delay time 2 sec (@ 115Vac) 2 sec (@ 115Vac)
Hold up time 8 ms (@115Vac input, full load) 8 ms (@115Vac input, full load)
Over Voltage Protection (OVP) 24V 24V
Short circuit protection Output can be shorted without damage Output can be shorted without damage
Electrostatic discharge (ESD) 15kV (at air discharge)
8kV (at contact discharge)15kV (at air discharge)
8kV (at contact discharge)
Dielectric Withstand Voltage
Primary to secondary 1500 Vac (or 2121 Vdc), 10mA for 1 second
Leakage current 0.25 mA max. (@ 254 Vac, 60Hz)
Regulatory Requirements Internal Filter meets:
1. FCC class B requirements. (USA)
2. VDE 243/1991 class B requirements. (German)
3. CISPR 22 Class B requirements. (Scandinavia)
4. VCCI class II requirements. (Japan)
LCD
ItemSpecification 
						

							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 
power-saving modes.
TThe buzzer beeps
TThe Sleep indicator lights up
Hibernation Mode
TWhen customized functions for 
power management are set to 
Hibernation and the 
corresponding action is taken. 
TInvoked by the operating system 
power-saving modes.
TAll power shuts off
Display Standby Mode
Keyboard, built-in touchpad, and an 
external PS/2 pointing device are idle 
for a specified period.
TThe display shuts off
Hard Disk Standby Mode
Hard disk is idle within a specified 
period of time.
THard disk drive is in standby mode.
(spindle turned off)
Environmental Requirements
ItemSpecification
Te m p e r a t u r e
Operating +5 ~ +35°C
Non-operating -10 ~ +60°C
Non-operating -20 ~ +60°C (Storage package)
Humidity
Operating 20% ~ 80% RH, non-condensing
Non-operating 20% ~ 80% RH, non-condensing
Non-operating 20% ~ 90% RH, non-condensing (storage package)
Vibration
Operating (unpacked) 5 ~ 25.6 Hz:  0.38 mm (peak to peak)
25.6 ~ 250 Hz:  0.5G
Non-operating (unpacked) 5 ~ 27.1 Hz:  0.6G
27.1 Hz ~ 50 Hz:  0.4 mm (peak to peak)
50 ~ 500 Hz:  2.0G
Non-operating (packed) 5 ~ 62.6 Hz:  0.51 mm (peak to peak)
62.6 ~ 500 Hz:  4G 
						

							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 Plastic
Indicators Power-on, Standby, Battery Status, Media Access, Caps Lock and Num Lock
Switch Power
Memory Address Map
Memory AddressSizeFunction
00000000-0009FFFF 640 KB Base memory
80600000-80600FFF
80620000-8063FFFF
81000000-81FFFFF
000A0000-000CFFFF4 KB Rage Mobility-M1 AGP
128 KB
3 MB
192 KB
000E0000-000ED7FF
80100000-80100FFF
80200000-802FFFFF54 KB Intel 8255X - Based PCI Ethernet 
Adapter
4 KB
1 MB
08000000-08000FFF
08001000-08001FFF4 KB O2 Micro OZ6933 Cardbus Controller
4 KB
82400000-82400FFF 4 KB USB
82200000-82200FFF 4 KB Audio
I/O Address Map
I/O AddressFunction
000-00F DMA controller-1
020-021 Interrupt controller-1
040-043 Timer 1
060, 064 Keyboard controller 8742 chip select
061 System speaker
066 ACPI Embedded Controller
070-073 System CMOS/RTC
080 Main board resources
081-08F DMA Controller-1
0A0-0A1 Interrupt controller-2
0C0-0DF DMA controller-2
0F0-0FF Numeric data processor
170-177/376 2nd EIDE device (CD-ROM) select
1F0-1F7/3F6 1st EIDE device (hard drive) select 
						

							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
IRQ7 LPT1
IRQ8 Real time clock
IRQ9 SCI
IRQ10 Audio/Modem/LAN
IRQ11 USB/VGA/Cardbus
IRQ12 PS2 pointing device
IRQ13 Numeric data processor
IRQ14 1st IDE device (hard disk)  
IRQ15 2nd EIDE device (CD-ROM drive)
DMA Channel Assignment
DMA ChannelFunction
DRQ0 Not used
DRQ1 Not used
DRQ2 Floppy
DRQ3 FIR
DRQ4 DMA controller
DRQ5 Not used
DRQ6 Not used
DRQ7 Not used
I/O Address Map
I/O AddressFunction 
						

							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).
Navigating the BIOS Utility
There are six menu options:  System Information, Basic System Settings, Startup Configuration, Onboard 
Device Configuration, System Security and Loading Default Settings.
To enter a menu, highlight the item using the cursor up/down
 keys, then press Enter
.
Within a menu, navigate through the BIOS Utility by following these instructions:
TPress the cursor up/down
 keys to move between the parameters.
TPress the cursor left/right
 keys to change the value of a parameter.
TPress 
the Esc 
key while you are in any of the menu options to return to the main menu.
NOTE: 
You can change the value of a parameter if it is enclosed in square brackets.  Navigation keys are 
shown at the bottom of the screen.
System Utilities
Chapter 2 
						

							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 service personnel know more about your 
computer.
ParameterDescription
CPU Type & Speed Describes the type of CPU installed in the system.
Floppy Disk Drive Shows the floppy disk drive type (1.44 MB, 3.5-inch).
Hard Disk Drive Shows the size or capacity of the hard disk.
HDD Serial Number Shows the serial number of the hard disk.
System with Shows the high-capacity disc drive installed.
System BIOS Version Shows the system BIOS version. 
VGA BIOS Version Shows the video graphics accelerator BIOS version.
Serial Number Shows the serial number of the computer.
Asset Tag Number Shows the asset tag number of the computer.
Product Name Shows the official name of the product.
Manufacturer Name Shows the manufacturer of the computer.
UUID Shows the universally unique identifier of your computer. 
						

							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 present, it 
boots up from that floppy disk.  If not, the computer continues to search for a bootable CD-ROM in the CD-
ROM drive.  If it cannot boot up from the CD-ROM drive, it continues by booting up from the hard disk.
To set the boot drive sequence, use the cursor up/down keys to select a priority level (1st, 2nd, 3rd and 4th), 
then use the cursor left/right keys to select the device for that priority level.
ParameterDescriptionOptions
Boot Display Sets the display device on boot-up.
When set to 
Auto, the computer automatically 
determines the display device when the computer 
starts up.  If an external display device (e.g., monitor) 
is connected, it becomes the boot display; otherwise, 
the computer’s display screen is the boot display.  
When set to 
Both, the computer outputs to both the 
computer display screen and an external display 
device if one is connected.Both or Auto 
Screen Expansion When set to enabled, the screen will automatically 
adjust the display to fit the screen when the resolution 
is set to 640 x 480.Enabled or Disabled
Resume on LAN/Modem Access When enabled, it allows your computer to resume 
when LAN/Modem access is active.Enabled or Disabled
Hotkey Beep When enabled, the computer gives off a beep when a 
hotkey (key combination is pressed).Enabled or Disabled
Fast Boot Allows you to define your system’s booting process; 
whether to skip some POST routines or proceed with 
the normal booting process.Enabled or Disabled
Boot Drive Sequence Specifies the order in which the computer starts up 
from.  See the section below.1st: Floppy Disk, 
2nd: CD-ROM, 
3rd: Hard Disk
4th: LANDesk (R) Service 
Agent 
						

							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 port.
When enabled, you can set the base I/O address and 
interrupt request (IRQ) of the serial port.Enabled or Disabled
3F8h, 3E8h, 2F8h or 2E8h
4 or 11
IrDA FIR Port Enables or disables the infrared port.
When enabled, you can set the base I/O address and 
interrupt request (IRQ) and direct memory access 
(DMA) channel of the infrared port.Disabled or Enabled 
Parallel Port Enables or disables the parallel port.
When enabled, you can set the base I/O address, 
interrupt request (IRQ) and operation mode of the 
parallel port.
If operation mode is set to ECP, the direct memory 
access (DMA) channel of the parallel port is set to 1.Enabled or Disabled
378h, 278h, or 3BCh
7 or 5
Bi-directional, ECP, EPP or 
Standard 
						

							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 consist of up to eight characters (A-Z, a-z, 0-9). 
IMPORTANT:
Be very careful when typing your password because the characters do not appear on the 
screen. 
3.
Press Enter
.  Retype the password to verify your first entry and press Enter
.
4.
After setting the password, the computer automatically sets the chosen password parameter to Present.
ParameterDescriptionOptions
Setup Password When set, this password protects the computer and the BIOS 
Utility from unauthorized entry.  See the following section for 
instructions on how to set a password.None or Present
Power-on Password When set, this password protects the computer  from 
unauthorized entry.  See the following section for instructions 
on how to set a password.None or Present
Hard Disk Password When set, this password protects the hard disk from 
unauthorized access.  See the following section for 
instructions on how to set a password.None or Present
Processor Serial Number The Pentium III processor includes a unique serial number 
which allows individual CPUs to be identified.  You can turn off 
this feature by setting this parameter to Disabled. This one is 
not available in the model with Celeron processor.Enabled or Disabled