Acer TravelMate 4020 User manual

Acer TravelMate 4020 Series
Service Guide
PRINTED IN TAIWAN
Service guide files and updates are available
on the ACER/CSD web; for more information,
please refer to http://csd.acer.com.tw

II
Revision History
Please refer to the table below for the updates made on TravelMate 4020 service guide.
Date Chapter Updates

III
Copyright
Copyright © 2005 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without
the prior written permission of Acer Incorporated.
Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular
purpose. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the
programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential
damages resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.

IV
Conventions
The following conventions are used in this manual:
SCREEN MESSAGES Denotes actual messages that appear
on screen.
NOTE Gives bits and pieces of additional
information related to the current
topic.
WARNING Alerts you to any damage that might
result from doing or not doing specific
actions.
CAUTION Gives precautionary measures to
avoid possible hardware or software
problems.
IMPORTANT Reminds you to do specific actions
relevant to the accomplishment of
procedures.

V
Preface
Before using this information and the product it supports, please read the following general information.
1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION
decided for Acer's "global" product offering. To better fit local market requirements and enhance product
competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g.
add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered
in this generic service guide. In such cases, please contact your regional offices or the responsible
personnel/channel to provide you with further technical details.
2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel. If, for whatever reason, a part number change is made, it will
not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer
office may have a DIFFERENT part number code to those given in the FRU list of this printed Service
Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and
service of customer machines.

VI

Chapter 1 1
Features
This computer was designed with the user in mind. Here are just a few of its many features:
Performance
TIntel®915GM PCI Express chipset
TIntel®Pentium®M processor 725 (2MB L2 cache, 1.6 GHz, 400 MHz FSB)
TCPU Package is uFPGA 478 Package
TIntegrated Intel®PRO/Wireless 2200BG network connection (dual-mode 802.11b/g) Wi-Fi
CERTIFIEDTM solution
Memory
T256MB or 512MB of DDRII 400/533
TUpgradeable to 2GB Memory by Dual channels of SODIMM
T512KB flash ROM BIOS
Display
T15” XGA TFT LCD, supporting 1024x768 pixel resolution
T15.4” WXGA+TFT LCD, supporting 1280x800 pixel resolution
Graphics
TMicrosoft®DirectX®9.0 support
TATI POWERPLAYTM 5.0 support
TSimultaneous LCD and CRT display support
TUp to 2048x1536 resolution via non-interlaced CRT display
TDual independent display
TExternal resolution/refresh rate
T2048x1536: 85/75/70/66/60 Hz
T1600x1200: 120/100/85/75/60 Hz
T1280x1024: 60/70/75/85/90/100/120/160/180 Hz
T1024x768: 200/160/150/120/100/90/85/75/72/70/60 Hz
T800x600: 200/160/120/100/90/85/75/72/70/60 Hz
TMPEG-2/DVD hardware-assisted capability
TS-video/TV-out (NTSC/PAL) support
Audio
T16-bit AC’97 stereo audio
TDual speakers and one internal microphone
TSeparate audio ports for headphone-out, line-in, microphone-in devices
TBuilt-in two 1.5W speakers
System Specifications
Chapter 1

2Chapter 1
TMS-Sound Compatible
Storage
T60 GB ATA/100 hard disc drive
TOptical drive options: 8X DVD-Dual double-layer or DVD/CD-RW combo
TPC card 95 supported with one Type II
TPCI card bus
Tno ZV support
Communication
T56Kbps V.92 with PTT approval
T10/100M LAN on board
TWLAN 802.11b/g or 802.11 a/b/g dual-band tri-mode Wireless
Twith Mini-PCI interface
TBuilt-in 2 Antenna (which has to be placed on the top of LCD on the sides of LCD latch)
I/O Ports
TOne Type II PC Card slot
TOne RJ-11 phone jack (V.92, 56Kbps modem)
TOne RJ-45 network jack
TOne DC-in jack (AC adapter)
TOne external monitor port
TOne headphones/speaker/headphone-out jack
TMicrophone/line-in jack
TThree USB 2.0 ports

Chapter 1 3
Battery
T4-cell of Li-ion battery pack, (2200mAh,32W)
T65W AC adaptor 19V 3.42A
Weight (with battery)
T3.0 kg (6.6 lbs.)
Dimensions
T364(W) x 279(D) x 33.9/38.9(H) mm (14.3 x 11 x 1.3/1.5 inches)
Environment
TTemperature
TOperating: 5oC ~ 35oC
TNon-operating: -20oC ~ 65oC
THumidity ( non-condensing)
TOperating: 20% ~ 80% RH
TNon-operating: 20% ~ 80% RH

4Chapter 1
Mainboard Placement
Top View

Chapter 1 5
Rear View

6Chapter 1
ITEM DESCRIPTION ITEM DESCRIPTION
CN2 LCD Connector CN14 DC JACK
CN3 LED board connector CN15 CRT connector
SW2 Lid switch CN16 Docking connector
CN10 express card connector CN17 Battery connector
CN11 4 IN 1 connector CN18 Fix ODD connector
CN13 Speaker connector CN21 Swap ODD connector
CN9 MD board connector CN24 2nd Battery connector
CN12 INT MIC connector CN30 PATA HDD connector
CN5 Keyboard connector CN31 SATA HDD connector
CN6 BT connector CN36 Line IN connector
CN8 TP connector CN34 MIC IN connector
U4 VGA RAM CN35 Line out/SPDIF
connector
U8 VGA RAM CN33 USB connector
U6 LAN transformer CN32 1394 connector
CN28 PCMCIA connector CN26 USB connector
CN25 USB connector CN23 S video connector
CN20 RJ45/RJ11 connector CN19 Fan connector
CN22 MINI PCI connector U31 CPU
U30 EC U29 VGA Chp
U34 North Bridge U38 South Bridge
U25 VGA RAM U28 VGA RAM
U24 BIOS ROM

Chapter 1 7
Block Diagram
INTEL Mobile_479 CPU
400/533MHZ DDR2
ATA 66/100
AC97
CLOCK GEN
AUDIO CODEC
Centrino
DDR2-SODIMM1
DDR2-SODIMM2
IDE-ODD
IDE - HDD
MODEM
RJ11
Page:27
Page:27
Page:27
Page:21
Page:21
Page:9~10
Page:9~10
ICS954201
Page : 3 , 4
Page : 5 ~ 8
Page : 18 ~ 20
Page : 2
Page:28
LINE
OUT
ALVISO
ICH6-M
609 BGA
DMI I/F
Page : 29
Page:30Page:30
Touchpad
KBC(97551)
Keyboard
DOCKING
Page:33
DOTHAN
CELEROM-M
M26P/M24P
Page : 11 ~ 14
ATI
64M /
128M
PCIE
TVOUT
EXT_LVDS
EXT_CRT
EXT_TV-OUT
INT_LVDS
INT_CRT
INT_TV-OUT
SWITCH
CIRCUIT
MEDIA BAY
Page:21
PCI7411
PCI BUS
MINI-USB
RJ45
TI
10/100/1G LAN
USB2,3,5
Page:25
PCMCIA
USB 2.0
Page : 22
Page: 23
Page : 22
Wireless LAN
Modem/LAN
Page: 24
SYSTEM 3
USB PORT
USB4
Page: 22
Page:26
MINI-PCI
BROADCOM
CONEXANT
20493-21
MAX9755
Page:28
AMP
20468-31
SPEKER
Page:28Page:27
LINE
IN
Page:27
MIC IN
CONEXANT
PS2
HOST BUS 400MHz
LPC
NS
SIO (87383)
NS
Page : 31
Page:31
IrDA
Page:33
DOCKING
Print Port
Page:33
DOCKING
COM Port
LVDS
RGB
Page : 22
DOCKING 2
USB PORT
USB0,1
PCMCIA+1394
+3 IN 1
1394
Page: 24
3 IN 1
Page: 23
4401 / 5705M TRANSFORMER
BOTHHAND
ICS
5V / 3.3V / 12V
Page : 35
5VPCU
3V_ALWAYS
+12V
3V_S5
+5V
3VSUS
5VSUS
1.8V / 0.9V
Page : 36 Page:16
TV-OUT
LVDS
CRT
Page:16
Page:17
Page : 37
1.5V / 1.05V / 1.8V
SMDDR_VTERM
+2.5V
2.5VSUS
+1.8V
MVREF_DM
AGP_VCC (+1.5V)
+1.5V
1.2VCCT
1.5V_S5
VTT
VCC_CORE
Page : 34
CPU CORE
+1.2V
Page : 38
VGA_CORE
2.5V_VGA
Page : 39
BATTERY
CHARGER
Page : 40
BATTERY
SELECT
CRANE2 ( ZL3 )
PCI ROUTING TABLE
REQ0# / GNT0#
REQ2# / GNT2#
REQ1# / GNT1#
IDSEL
AD24
AD19
AD17
INTERUPT
INTA#
INTB# , INTD#
INTC#,INTD#,INTA#
DEVICE
BROADCOM LAN
MINI-PCI
TI 7411
1257 BGA
DVI
Page:15
CH7307
Page:26
SATA - HDD
Page:21
SATA
DOCKING/DVI
NEW CARD
PCIE
Page : 32
Page: 33
REV.C
400/533MHZ DDR2
HOST BUS 533MHz

8Chapter 1
Outlook View
A general introduction of ports allow you to connect peripheral devices, as you would with a desktop PC.
Open View
#Item Description
1 Display screen Also called Liquid-Crystal Display (LCD), displaying computer
output.
2 Microphone Internal microphone for sound recording.
3 Keyboard For entering data into your computer.
4 Palmrest Comfortable support area for your hands when you use the
computer.
5 Click buttons
(Left, center and
right)
The left and right buttons function like the left and right mouse
buttons; the center button serves as a 4-way scroll button.
6 Touchpad Touch-sensitive pointing device which functions like a
computer mouse.
7 Status indicators Light-Emitting Diodes (LEDs) that turn on and off to show the
status of the computer’s functions and components.
8 Easy-launch buttons Buttons for launching frequently used programs.
9 Power button Turns the computer on and off.
Just for Starters...
# Item Description

Chapter 1 9
Front Panel
#Icon Item Description
1 Speakers Left and right speakers deliver stereo audio
output.
2 Power indicator Lights when the computer is on.
3 Battery indicator Lights when the battery is being charged.
4 Bluetooth
communication
button/indicator
Press to enable/disable Bluetooth function.
Lights to indicate the status of Bluetooth
communications. (for TM4600 only)
5Wireless
communications
button/indicator
Press to enable/disable Wireless function.
Lights to indicate the status of wireless LAN
communications. (manufacturing option)
6 Line-in jack Accepts audio line-in devices (e.g., audio CD
player, stereo walkman).
7 Microphone jack Accepts inputs from external microphones.
8 Speaker/Line-Out/
Headphone jack
Connects to audio line-out devices (e.g.,
speakers, headphones).
9 USB 2.0 port Connects to Universal Serial Bus (USB) 2.0
devices (e.g., USB mouse, USB camera).
10 Latch Locks and releases the lid.
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
"Launch keys" on page 10
# Icon Item Description
# Item Description
# Item Description
# Icon Item Description
# Icon Item Description

10 Chapter 1
Left View
NOTE: The positions of the AcerMedia indicator, eject button and emergency eject hole may differ depending
on the optical drive module installed.
#Item Description
1 Optical drive Internal optical drive; accepts CDs or DVDs depending on the
optical drive type.
2 LED indicator Lights up when the optical drive is active.
3 Optical drive eject
button
Ejects the optical drive tray from the drive.
4 Emergency eject
hole
Ejects the optical drive tray when the computer is turned off

Chapter 1 11
Right View
#Icon Item Description
1 PC Card slot eject
button
Ejects the PC Card from the slot.
2 PC Card slot Connects to one Type II CardBus PC Card.
3 Two USB 2.0 ports Connect to Universal Serial Bus (USB) 2.0
devices (e.g., USB mouse, USB camera).
4 Network jack Connects to an Ethernet 10/100/1000-based
network (for selected models).
5 Modem jack Connects to a phone line.
6 Ventilation slots Enable the computer to stay cool, even after
prolonged use.
Note:
# Icon Item Description
# Icon Item Description
# Item Description
# Icon Item Description
# Icon Item Description
Note:
# Icon Item Description
# Icon Item Description
Note:
# Icon Item Description
# Icon Item Description

12 Chapter 1
Rear View
#Icon Item Description
1 Power jack Connects to an AC adapter.
2 External display port Connects to a display device (e.g., external
monitor, LCD projector).
3 Security keylock Connects to a Kensington-compatible
computer security lock.
Note:
# Icon Item Description
# Icon Item Description
Note:
# Icon Item Description
# Icon Item Description
Note:
# Icon Item Description
# Icon Item Description

Chapter 1 13
Bottom View
#Item Description
1 Hard disk bay Houses the computer's hard disk
(secured with two screws).
2 Battery release latch Unlatches the battery to remove the battery pack.
3 Battery bay Houses the computer's battery pack.
4 Battery lock Locks the battery in place.
5 Cooling fan Helps keep the computer cool.
NOTE: Do not cover or obstruct the opening of the fan.
6 Memory compartment Houses the computer's main memory and Mini PCI Card.

14 Chapter 1
Indicators
Your computer provides an array of three indicators located above the keyboard, in addition to four
indicators positioned at the front of the palm rest area. These indicators show the status of the computer
and its componetns.
The three indicators located above the keyboard provide the following status information:
NOTE: The keypad lock must be turned on to use the embedded numeric keypad.
Icon Item Description
Caps Lock activity Lights when Caps Lock is activated.
Num Lock activiy Lights when Num Lock is activated.
Media activity Lights when the hard disk or optical drive is active.
Icon Function Description