Acer Travelmate 4050 Service Guide

							24Chapter 1
Loading mechanism Load: Manual
Release: (a) Electrical Release (Release Button)
                  (b) Release by ATAPI command 
                  (c) Emergency Release
Power Requirement
Input Voltage +5 V +/- 5 % (Operating) 
+/- 8 % (Start up)
Input Voltage +5 V +/- 0.25V
DVD-ROM Interface
ItemSpecification
Vendor & model name QSI SDW-082S
Performance Specification With CD Diskette With DVD Diskette
Transfer rate (KB/sec) (Mode1)
4X-5.7X PCAV 600-855KByte/s
10.3X-24X CAV 1552-3600KByte/s
(Mode2)
4X-5.7X PACV 684.4-975.3KBytes/s
10.3X-24X CAV 1769-4104KByte/s3.3X-8X CAV 4463-10820KByte/s
Data Buffer Capacity 192 KBytes
Interface IDE/ATAPI
Applicable disc format DVD: DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18),DVD-R (read, single 
border), DVD-RW(read) DVD-RAM (read, Version2.1), DVD-RAM (read, 
Version 1.0)
CD:  CD-Audio, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, CD-
I, CD-I Bridge (Photo-CD, Video-CD) Multisession CD (Photo-CD, CD-
EXTRA, CD-R, CD-RW), CD-R (read), CD-RW (read)
Loading mechanism Load: Manual
Release: (a) Electrical Release (Release Button)
                  (b) Release by ATAPI command 
                  (c) Emergency Release
Power Requirement
Input Voltage +5 V +/- 5 % (Operating) 
+/- 8 % (Start up)
Input Voltage +5 V +/- 0.25V
Combo Drive  Interface
ItemSpecification 
						

							Chapter 125
  
DVD Dual Interface
ItemSpecification
Vendor & model name QSI SDW-082S
Lite-On SOSW-852S
Performance Specification With CD Diskette With DVD Diskette
Transfer rate (KB/sec) (Mode1)
4X-5.7X PCAV 600-855KByte/s
10.3X-24X CAV 1552-3600KByte/s
(Mode2)
4X-5.7X PACV 684.4-975.3KBytes/s
10.3X-24X CAV 1769-4104KByte/s3.3X-8X CAV 4463-10820KByte/s
Data Buffer Capacity 192 KBytes
Interface IDE/ATAPI
Applicable disc formatRead :
DVD: DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18),DVD-Video, DVD-
Audio,DVD-R,DVD-R 3.95GB, DVD-R Multi-Border,DVD-RW,DVD+R, 
DVD+R DL,DVD+R Multi-Session,DVD+RW
CD-DA,CD-ROM Mode-1,CD-ROM/XA Mode-2 Form-1 and Mode-2 Form-
2,CD-i, Video-CD, CD-Text
Write:
DVD: DVD Date & Video
CD:CD-DA, CD-ROM Mode-1, CD-ROM/XA Mode-2 Form-1 and Mode-2 
Form-2,CD-i,Video -CD, CD-Text
Recordable Media Type:
DVD+R/DVD-RW/DVD+R DL/DVD-R/DVD-RW and DVD-R/CD-RW media  
Loading mechanism Load: Manual
Release: (a) Electrical Release (Release Button)
                  (b) Release by ATAPI command 
                  (c) Emergency Release
Power Requirement
Input Voltage +5 V +/- 5 % (Operating) 
+/- 8 % (Start up)
Input Voltage +5 V +/- 0.25V
Audio Interface
ItemSpecification
Audio Controller Realtek ALC250
Audio onboard or optional Built-in
Mono or Stereo Stereo
Resolution 20 bit stereo Digital to Analog converter
18 bit stereo Analog to Ditial converter
Compatibility AC97 2.2 & WHQL spec.
Mixed sound source CD
Sampling rate 48 KHz
Internal microphone No
Internal speaker / Quantity Yes / 2 
						

							26Chapter 1
Video Interface
ItemSpecification
Video vendor UMA (855GME)
Support bbp 15/16/24/32 bbp True Color on LCD& dual view 
Chip voltage Core/1.35V
Supports ZV (Zoomed Video) port No
Parallel Port
ItemSpecification
Parallel port controller  LPC47N217
Number of parallel port One
Location Rear side
Connector type 25-pin D-type connector, in female type
Parallel port function control Enable/Disable/Auto (BIOS or operating system chooses configuration) by 
BIOS setup
Note: Depending on your operating system, disabling an unused device 
may help free systen resources for other devices.
Supports ECP/EPP/Bi-directional 
(PS/2 compatible)Yes (set by BIOS setup)
Note: When Mode is selected as EPP mode, “3BCh” will not be available.
Optional ECP DMA channel (in BIOS 
setup)DMA channel 1
Optional parallel port I/O address (in 
BIOS setup)378h, 278h
Optional parallel port IRQ (in BIOS 
setup)IRQ7, IRQ5
USB Port
ItemSpecification
USB compliancy level 2.0
OHCI USB 2.0
Number of USB port 3
Location Two on rear and one on left
Serial port function control Enable/Disable by BIOS setup
PCMCIA Port
ItemSpecification
PCMCIA controller ICH4-M
Supports card type Type II 
Number of slots One type-II
Access location Left panel
Supports ZV (Zoomed Video) port No ZV support
Supports 32 bit CardBus  Yes 
						

							Chapter 127
  
System Board Major Chips
Item Controller
System core logic 855GHE/ICH4-M
Super I/O controller LPC47N217
Audio controller ALC250
Video controller UMA
Hard disk drive controller ICH4-M
Keyboard controller KB910
Keyboard
ItemSpecification
Keyboard controller KB910
Keyboard vendor & model name Standard keyboard w/o launch button embeded
Total number of keypads 85/US, 86/UK keys with 101/102 key emulation
Windows  logo key Yes
Internal & external keyboard work simultaneously Yes
Battery 
ItemSpecification
Vendor & model name Sony/Sanyo
4-cell of 18650 Li-ion battery pack, (2200mAh cell)
8-cell of 18650 Li-ion battery pack, (2200mAh cell)
Battery Type Li-ion
Pack capacity  31Wh / 63Wh
Cell voltage  3.7V/cell
Number of battery cell 8 
Package voltag  14.8V
LCD : 14.0” /15.0”
ItemSpecification
14.0”
Vendor & model name Toppoly
TD141TGCD2AU
B141XG10CMO  N141XB-L01
N141XB-L01
Mechanical Specifications
LCD display area 
(diagonal, inch)14.1” 14.1” 14.1””
Display technology TFT TFT TFT
Resolution XGA (1024* 768) XGA (1024* 768) XGA (1024* 768)
Supports colors 262K 262K 262K
Dot Pitch  0.093 x 0.279 mm 0.279mm N/A
Optical Specification
Contrast ratio 300:1 300:1 450:1
Response time (msec) N/A 25ms 35ms
Limuinance, white, 5P 
(cd/m
2)150 185 160
Viewing Angle
L/R:40
o/40o, U/D:15o/35oL/R:45o/45o, U/D:15o/35oL/R:45o/45o, U/D:15o/35o 
						

							28Chapter 1
15.0”
Vendor & model name AU             
B150XG02 V2 HW:2Samsung
LTN150XB-L03-C00
Mechanical Specifications
LCD display area 
(diagonal, inch)15” 15”
Display technology TFT TFT
Resolution 1024 x 768 1024 x 768
Supports colors 262K 262K
Dot Pitch  0.297mm 0.297mm
Optical Specification
Contrast ratio 300:1 450 : 1
Response time (msec) 25ms  16ms
Limuinance, white, 5P 
(cd/m
2) 200 
 270
Viewing Angle
L/R:40
o/40o, U/D:10o/33oH/V: 120o / 120o
AC Adapter
ItemSpecification
Vendor & model name LITEON 65W, 3 PIN, PA-1650-02CR
Input Requirements
Input Voltage(Maximum) 137 (low range)
265 (high range)
Nominal frequency (Hz) 47 - 63
Output Ratings (CV mode)
Noise + Ripple  380mvp-pmax (20MHz bandwidth) for resistor load as output voltage is 18.5V
Output Ratings (CC mode)
DC output voltage 18.0 ~ 19.2
Constant output 3.3A
Dynamic Output Characteristics
Start-up time 3 sec. (@115 Vac and 230Vac full load)
Hold up time 5ms min. (@115 Vac input, full load)
Over Voltage Protection (OVP) 29V
Short circuit protection Output can be shorted without damage, and auto recovery
AC Adapter
ItemSpecification
Vendor & model name DELTA ADP-65DB BG A 65W 3P
Input Characteristics
Input Rated Voltage 100V/240V
Input Voltage Range 90VAC to 270VAC
Input Frequency Range 47Hz to 63Hz
Input Voltage Harmonic 
Distortionlarger than or equal to 8%
LCD : 14.0” /15.0”
ItemSpecification 
						

							Chapter 129
  
Input Current (100Vac, 240Vac /
3.5A loag)larger than or equal to 1.5A
Output Characteristics
Output Rated Voltage 20V
Output Current 0A to 3.5A
Output Voltage Setting 19.5V to 21V
Output Voltage Ripple and 
Noise(90Vac/70W load; 264Vac/
70W load)larger than or equal to 300mVp-p
Dynamic Load Change 19.5~21V
Protection Characteristics
Over Voltage Protection 25V
Power Management
ACPI ModePower Management
Mech. Off (G3) All devices in the system are turned off completely.
Soft Off (G2/S5) OS initiated shutdown. All devices in the system are turned off 
completely.
Working (G0/S0) Individual devices such as the CPU and hard disk may be power 
managed in this state.
Sleeping State (S3) CPU Power Down
VGA Power Down
PCMCIA Suspend
Audio Power Down
Hard Disk Power Down
Super I/O Power Down
Sleeping State (S4) Also called Hibernate state. System saves all system states and 
data onto the disk prior to power off the whole system.
Environmental Requirements
ItemSpecification
Temperature
Operating
+5 ~  +35
°C
Non-operating
-20 ~ +65
°C
Non-operating
-20 ~ +65
°C  (storage package)
Humidity
Operating 20% to 80% RH
Non-operating 20% to 80% RH
Mechanical Specification
ItemSpecification
Dimensions 336.40(W) x 281.5(D) x 32 (H) mm  ( with ID)
bump-out 2.9mm at RAM door and battery area
Weight 2.79kg (6.15Ibs) with 14.1” LCD+DVD-ROM+8-cell Battery
2.48kg (6.26lbs) with 15” LCD+DVD-ROM+8-cell Battery
2.61kg (5.75lbs) with 14.1”  LCD+DVD-ROM+4-cell Battery
2.66kg (5.86lbs) with 15” LCD+DVD-ROM+4-cell Battery
AC Adapter
ItemSpecification 
						

							30Chapter 1
 
I/O Ports One type II CardBus slots, one RJ-11 modem jack, one RJ-45 network jack, one 
DC-in jack for AC adapter, one ECP/EPP-compliant parallel port, one external 
monitor port, one headphone/speaker/line-out jack (3.5mm mini jack), one 
microphone/line-in jack (3.5mm mini jack), three Universal Serial Bus (USB) 
ports, one IEEE 1394 port, one S-video port
Material Cover material: ABS
Indicators Power, Battery charge, HDD, ODD, Wireless/Bluetooth communication, Caps 
lock, Pad lock, Num lock and Scroll lock indicators
Switch Power switch
Lid switch
User define switch 1, 2
Wireless ON/OFF switch
Mechanical Specification
ItemSpecification 
						

							Chapter 231
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 
m during POST (when “Press  to enter Setup” message is prompted 
on the bottom of screen). 
Navigating the BIOS Utility
There are five menu options: Information, Main, Advanced, Security, Boot and Exit.
Follow these instructions:
NOTE: You can change the value of a parameter if it is enclosed in square brackets. Navigation keys for a 
particular menu are shown on the bottom of the screen. Help for parameters are found in the Item 
Specific Help part of the screen. Read this carefully when making changes to parameter values.
ItemDescription
Main Allows the user to specify standard IBM PC AT system parameters
Advanced Provides advanced settings of the system
Security Provides security settings of the system. 
Boot Allows the user to specify the boot options. 
Exit  Allows the user to save CMOS setting and exit Setup. 
Hot KeyDescription
Fn+Esc Sleep Button in ACPI mode
Fn+F5 Display toggle (LCD>CRT>Simulataneous)
Fn+End Speaker On/Off
Fn+F10 Pad Lock
Fn+F11 Num Lock
Fn+F12 Scroll Lock
Fn+PgUp Volume Up
Fn+PaDn Volume Down
Fn+wBrightness Up
Fn+yBrightness Down
System Utilities
Chapter 2 
						

							32Chapter 2
Main
This menu provides you the information of the system.
ParameterDescription
Device
Product Name A product name string will be stored in the secured data area. The product 
name is an alphnumeric string of 16 bytes in length checksum.
Manufacture Name A manufacture name string will be stored in the secured data area. It is defined 
as “Acer” stored 16 bytes in total length with checksum.
System BIOS Version This field reports the BIOS version of system.
VGA BIOS Version This field reports the VGA version of the system.
HDD Model Name This item will show the size of HDD installed on Primary IDE master. 
The hard disk size is automatically detected by the system. If there is 
no hard disk present or unknown type, °ßNone°® should be shown on this field.
HDD Serial Number This item allows the serial number of the Hard Disk. If there is no hard disk 
present or unknown type,”None” should be shown on this field.
ATAPI This item will show the model name of DVD/CD-ROM drive installed on system. 
The DVD/CD-ROM model name is automatically detected by the system. If 
there is no DVD/CD-ROM model present or unknown type, “None” should be 
shown on this field.
Serial Number  This item will show the Serial number of system.
Asset Tag Number This item will show the Asset Tag number of the system.
UUID This number only valid when there is an internal LAN device presents, 
otherwise, zero will be display in this field.
System
CPU This field will show you the system’s CPU type.
CPU Speed This item will show the CPU speed.
Insyde Software SCU                                     May 20, 2003  5:40:09  A
Main Advanced Security Boot Exit 
 
 ----Devices--------------------------------------------------------System------------------------- 
 Product Name = TravelMate  4050     CPU = Intel® Pentium ® 4 
 Manufacture Name = Acer CPU speed = 1.4 GHz 
 System BIOS Version =  V1.00  
 VGA BIOS Version =  3104  
   
 HDD Model Name  = HITACHI_DK23EA-40-(PM)  
 HDD Serial Number = 8D4648 ----Memory------------------------ 
 ATAPI = UJDA740 DVD/CDROM-(SM) Base Memory = 640 KB 
  Extended Memory = 127MB 
 Serial Number = ( 32 bytes) VGA Memory =  16MB 
 Asset Tag Number = (32 bytes)  
 UUID = (16 bytes)  
   
   
Setup system date, time. Enable boot  logo and get system information. 
 
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							Chapter 233
Memory
Base Memory This field reports the memory size of system base memory.  The size is fixed to 
640KB.
Extended Memory This field reports the memory size of the extended memory in the system. 
Extended Memory size = Total memory size - 127 MB 
VGA Memory VGA Memory size = 16MB
ParameterDescription
Time and System Date The hours are displayed with 24 hour format. The values set in these two fields take effect 
immediately
Quiet Boot Enabled>Customer Logo is displayed, and Summary Screen is disabled 
Disabled>Customer Logo is not displayed, and Summary Screen is  enabled
LCD Auto Dim Enabled>LCD brightness will automatically lower to save more power when AC is not 
present. 
Disabled>LCD brightness will NOT automatically lower to save more powerwhen AC is 
not present
Network Boot
F12 Boot Menu Enabled>During user’s quite boot, the OEM POST screen will have “Press Change 
Boot Device”  
Disabled>During user’s quite boot, the OEM POST screen will not have “Press 
Change Boot Device”
D2D Recovery Enables, disables D2D Recovery function. The function allows the user to create a hidden 
partition on hard disc drive to store operation system and restore the system to factory  
defaults.
ParameterDescription
Insyde Software SCU                                      May 20, 2003  5:40:09  AM
Main Advanced Security Boot Exit 
Date and Time     
_ Quiet Boot     
_ LCD Auto DIM     
_ Network Boot     
VF12 Boot Menu 
_ D2D Recovery    
      
       
       
       
        
      
 
Enable or disable the F12 key for Boot Menu during POST  
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