Instruction/ maintenance manual of the product TravelMate 4050 Acer
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TravelMate 4050 Service Guide PRINTED IN T AIW AN Service CD P/N: WE DO NOT PRODUCE CD FOR THIS MODEL Service guide files and updates are availab le on the ACER/CSD web; for more information, please refer to http://csd.
II Revision History Please refer to the table below for the up dates made on T ravelMate 4050 service guide. Date Chapter Up dates.
III Copyright Copyright © 2004 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.
IV Conventions The following conventi ons are used in this manual: SCREEN MESSAGES Denotes actual messages that appe ar on screen. NOTE Gives bits and pieces of additional information related to the current topic. W ARNING Alerts you to any damage that might result from doing or not doing specific actions.
V Preface Before using this information and the product it s upports, please read the fo llowing general info rmation. 1. This Service Guide provides you with all techni cal information relating to the BASIC CON FIGURA TION decided for Acer's "glo bal" product offering.
VII T able of Contents Chapter 1 System Specifications 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .
VIII T able of Contents Chapter 6 FRU (Field Replaceable Unit) List 66 Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 TravelMate 4050 Parts . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1 1 Features This model is a project to accommodate In tel Centri no techn ology to provide end user better mobi le experience with entry price. It is a 2 spi ndle with normal 4:3 for factor . Performance T Intel ® Pentium ® M processor 710/715/72 5/735/745/755/76 5 at 1.
2 Chapter 1 Video T VGA is integrated in Intel 855GME (Montara-GME) chipset T Simultaneous display on LCD and CRT T 3D Windows accelerator T Supports 15/16/24/32 bbp T rue Color on LCD & Dual View.
Chapter 1 3 T Parallel port T External display (VGA) port T Microphone Jack T Headphones/S peaker/Line-Out port T Infrared (F IR) port T PC Card Slot (one T ype II) T DC-In jack for AC adaptor.
4 Chapter 1 System Block Diagram LPC BUS Clock Gene rato r PCI BU S Mobile Doth an/Banias SIO LPC47N217 DDR-SO-DIMM X2 BANK 0, 1, 2, 3 page 10 ,11,12 USB conn PARALLEL Thermal Sensor ADM1032 page 4 FIR HUB -Li nk Legacy I/O Option USBx3 USB port 0, 2, 4 AMP& Phone Jack page 32 ALC250 AC97 Codec USB port 1 MBC Conn.
Chapter 1 5 Mainboard Placement Top View Item Description Item D escription JP1 CRT CONN JP17 ODD CONN JP2 Parallel Port JP18 SPK CONN JP3 IEEE1394 CONN JP19 TP/B CONN JP4 TV -OUT CONN JP20 MIC JACK J.
6 Chapter 1 Bottom View Item Description Item D escription JP25 SO-DIMM Socket U45 SIO Controller JP26 SO-DIMM Socket U29 IEEE1394 Controller U35 CarBus Controller U37 EC.
Chapter 1 7 Outlook View A general introduction of ports allow you to connect peripheral devices, as you would with a desktop PC. Front Open View # Item Description 1 Display screen Also called Liqui d-Crystal Display (LCD) , displays computer output.
8 Chapter 1 Front View # Item Description 1 Optical drive Internal optical dr ive; accepts CDs or DVDs depending on the optical drive type. 2 Optical drive eject button Ejects the optical driv e tray from the drive. 3 Emergency eject hole Ejects the optical dr ive tray when the computer is tu rned off.
Chapter 1 9 Left View # Item Description 1 One USB 2.0 port Connects to Universal Serial Bus devices (e.g., USB mouse, USB camera). 2 Infrared port Interfaces with infrared devices (e.g., infrare d printer , IR- aware computer). 3 PC Card slot Accepts one T ype II 16-b it PC Card or 32-bit CardBus PC Card.
10 Chapter 1 Right View # Item Description 1 Stereo speaker Outputs sound 2 HDD Houses the computer's hard disk 3 DC-in jack Connects the AC adapter 4 V entilation Slot Enables the computer to stay cool, even afterprolonged use.
Chapter 1 11 Rear View # Item Description 1 Security keylock Connects to a Kensington-compatible computer security lock 2 Parallel port Connects to a parallel device (e.g., parallel printer) 3 External display port Connects to a display device (e.g., external monitor , LCD projector) and displays up to16.
12 Chapter 1 Bottom View # Item Description 1 Optical drive Internal optical dr ive; accepts CDs or DVDs depending on the optical drive type 2 Memory compartment Houses the computer's main memory.
Chapter 1 13 Indicators The computer has six easy-to-read status icons below the display screen. The status LCD displays icons that show the status of the compute r and its components. Icon Function Description HDD Lights when Hard Disk Drive is activated.
14 Chapter 1 Lock Keys The keyboard h as four lock keys which you can toggle on and off. Lock Key Description Caps Lock When Caps Lock is on, all alphabetic characters typed are in uppercase. Pad lock (Fn-F 10) When Pad Lock is on, the embedded keypad is enabled.
Chapter 1 15 Embedded Numeric Keypad The embedded nu meric keypad functions like a desktop numeric keypad. It is indicated by small characters located on the ri ght hand side of the keycaps. Desired Access Num Lock On Num Lock Off Number keys on embedded keypad T ype numbe rs in a normal manner .
16 Chapter 1 Windows Keys The keyboard has two keys that perform Wi ndows-specific functions. Key Description Windows logo key S tart button. Combinations with this key perform special functions.
Chapter 1 17 Hot Keys The computer uses hotkey or key combinations to a ccess most of the computer ’s controls like sreen brightness and volu me output. T o activate hot keys, press and hold the Fn key before pr essing the other key in the hot key combination.
18 Chapter 1 The Euro Symbol If your keyboard layout is set to United S tates-International or United Ki ngdom or if you have a keyboard with a European layout, you can type the Euro symbol on your keybo ard. NOTE: For US keyboard users: The keyboard layout is set when you first set up Windows.
Chapter 1 19 Launch Keys Located at the top of keyboard are thre e button s. The left-most button is t he power button. T o the right of the power button are the two launch keys.
20 Chapter 1 Touchpad The built-in touchpad is a pointing device that senses movement on its surface. This means the cursor responds as you move your finger on the surface of the touchpad. The centra l locati on on the palmrest provides optimum comfort and support.
Chapter 1 21 Hardware Specifications and Configurations Processor Item Specification CPU type Intel ® Pentium ® M Processor at 1.4~2.1 GHz Intel ® Celeron ® M Processor at 1.2~1.5 GHz CPU package FCBGA package CPU core voltage Intel ® Pentium ® M Processor supports automatic selection of power supply voltage CPU I/O voltage 1.
22 Chapter 1 NOTE: Above table lists s ome system memory configur ations. Y ou may combine DIMMs with various capacities to form other combinations. . .
Chapter 1 23 Hard Disc Drive Interface Item Specification Functio nality Model Name T oshiba MK3025GAS Hitachi HTS424030M9A T00 Seagate 2.75”W . 37”H ST9 4019A Capacity (MB) 30000 30000 40000 Byte.
24 Chapter 1 Loading mechanism Load: Manual Release: (a) Electrical Release (Release Butto n) (b) Release by A T API command (c) Emergency Release Power Requirement Input V oltage +5 V +/- 5 % (Operating) +/- 8 % (S tart up) Input V oltage +5 V +/- 0.
Chapter 1 25 DVD Dual Interface Item S pecification V endor & model name QS I SDW-082S Lite-On SOSW-852S Performance S pecification With CD Diskette With DVD Diskette T ransfer rate (KB/sec) (Mode1) 4X-5.7X PCA V 600-855KByte/s 10.3X-24X CA V 1552-3600KByte/s (Mode2) 4X-5.
26 Chapter 1 Video Interface Item S pecification Video vendor UMA (855GME) Support bbp 15/16/24 /32 bbp True Color on LCD& dual view Chip voltage Core/1.
Chapter 1 27 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 Key.
28 Chapter 1 15.0” V endor & model name AU B150XG02 V2 HW:2 Samsung L TN150XB-L03-C00 Mechanical S pecifications 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.
Chapter 1 29 Input Current (100V ac, 240V ac / 3.5A loag) larger than or equal to 1.5A Output Characteristics Output Rated V oltage 20V Output Current 0A to 3.5A Output V o ltage Setting 19.5V to 21V Output V o ltage Ripple and Noise(90V ac/70W load; 264V ac/ 70W load) larger than or equal to 300mVp-p Dynamic Load Change 19.
30 Chapter 1 I/O Ports One type II CardBus slots, one RJ-1 1 modem jack, one RJ-45 network jack, on e 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.
Chapter 2 31 BIOS Setup Utility The BIOS Setup Utility is a hardware configuration prog ram built into y our computer ’s BIOS (Basic Input/ Output System). Y our compu ter is already properly configured and optimi zed, and you do not need to run this utility .
32 Chapter 2 Main This menu provides you th e information of the system. Parameter Description 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.
Chapter 2 33 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.
34 Chapter 2 Advanced The Advanced screen contains parameters in vo lving yo ur hardware devices. It also pro vi de s ad va n c ed settings of the system. The table below describes the parameters in the screen. Settings in boldface are the default and suggested parameter settings.
Chapter 2 35 LPT Port Configure the system’s parallel port using options: Disabled an d Enabl ed. The table below describes the parameters in the screen. Settings in boldface are the default and suggested parameter settings. Description Option Port Definition Set s the mode for the parallel port.
36 Chapter 2 Legacy USB Support Disabled: Disable support for Legacy Un iversal Seria l Bus. Enabled: Enable support for Legacy Universal Serial Bus. I n s y d e S o f t w a re S CU M a y 2 0 , 20 03 .
Chapter 2 37 Security The Security screen co ntains parameters that help sa feguard and protect your co mpu ter from unautho ri zed use. The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings.
38 Chapter 2 Boot This menu allows the user to deci de the order of boot de vices to load the operatin g system. Bootable devices includes the diskette drive in module bay , the onbo ard hard disk drive and th e CD-ROM in modu le bay .
Chapter 2 39 Exit The Exit screen contains parameters that help safegua rd and protect your computer from unauthorized use. The table below describes the parameters in this screen. Parameter Description Exit Saving Changes Allows the user to save changes to CMOS and reboot the system.
40 Chapter 2 BIOS Flash Utility The BIOS flash memory upd ate is required for th e following conditions: ! New versions of system programs ! New features or options ! Restore a BIOS when it becomes corrupted. Use the Flash utility to updat e th e system BIOS flash ROM.
Chapter 3 41 This chapter contains step-by-s tep procedures on how to disass emble the notebook computer for maintenance and troubleshooting . T o disassemble the computer, you need the following tool.
42 Chapter 3 General Information Before You Begin Before proceeding with the disassembly procedure, make su re that you do the following: 1. T urn off the power to the system and all peripherals. 2. Unplug the AC adapter and all power and signal cab les from the system.
Chapter 3 43 Removing the Battery Pack 1. Slide the battery latch. 2. Then remove the battery ..
44 Chapter 3 Removing HDD Module, ODD and Memory Module Removing the HDD Module 1. Remove the one screw . 2. Pull the entire HDD o ut fromm the sytem. Removing the ODD Module 1. Remove the one screw to release the ODD. 2. Pull the entire ODD out from the system.
Chapter 3 45 Removing the Keyboard/LCD Module Removing the Keyboard 1. Use a plastic flat head screw driver or any pl astic tool to detach the middle cover carefully . 2. Then remove the middle cover from the main uni t. 3. Remove the two screws holding the keyboard.
46 Chapter 3 5. Remove the two screws to release the wireless door . 6. Detach the wirless door . 7. Remove the two screws to release the MDC. 8. Detach the MDC away from the system. Removing the LCD module 1. Remove one screw a s the picture shows. 2.
Chapter 3 47 Disassembling the Main Unit 1. Disconnect the wire ca ble from the mainboard . 2. Be caution of the cable to release from the tab before you to conduct the panel disassemble. 3. Detach the entire p anel out from the system. 4. Remove the four screws to release the thermal.
48 Chapter 3 1. Remove the four screws to detach the p anel cover from panel moudle. 2. Detach the cover from the pa nel. . 3. Remove the two screws on both sides that fasten the LCD bracket. 4. Disconnect the backlight cable and wireless cable from the invertor board .
Chapter 3 49 11 . Remove the 10 screws to re lease the lower case. 12. Remove the 3 screws located at the upper case. 13. Disconnect the touchpad FPC from the mainboard.
50 Chapter 3 16. Remove the two screws to release the touchpad support bracket . 17. Disconnect the touchpad FPC. 18. Push toward left direction and take the touchpad support bracket. 19. Detach the touchpad out from the upper case . 20. Remove the one screw to release the mainbo ard.
Chapter 3 51 28. Remove the two screws fastening the speakers. 29. Detach the speakers on each side. Disassembling the HDD Module 1. Remove the two screws holding the HDD bracket on one side. 2. Detach the HDD unit from the bracket. 3. Detach the ESD plate from the HDD unit.
Chapter 4 52 System Check Procedures External Diskette Drive Check Do the following steps to isolate the problem to a controller, driver , or diskette. A write-enabled, diagnostic diskette is required. NOTE: Make sure that the diskette does not have more than on e label attached to it.
53 Chapter 4 Keyboard or Auxiliary Input Device Check Remove the external keyboard if the internal keyboard is to be tested. If the internal ke yboard does not w ork or an unexpected character appears, make sure that the flexi ble cable extending from the keyboard is correctly se ated in th e connector on the main board.
Chapter 4 54 Check the Power Adapter Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power adapter cable. See the following figu re 1. If the voltage is not correct , replace the power ad apter . 2. If the voltage is within the range, do the following: T Replace the main board.
55 Chapter 4 Check the Battery Pack T o check the battery pack, do the following: From Software: 1. Check out the Power Options in control Pan el 2. In Power Mete r , conf irm that if t he parameters sh own in the screen for Current Power Source and T otal Battery Power Remaining are correct.
Chapter 4 56 still occurs, continue next step. Replace the CPU with another of th e same specifications. If th e problems still occurs, go to next step. The main board may be damage d. Replace main board. 3. If the external monitor ha s the same problem as th e internal monito r , the mai n board may be da maged.
57 Chapter 4 Insyde MobilePro BIOS POST Beep Code and POST Messages The POST error message index lists the error message and their possible causes. The most like ly cause is listed first.
Chapter 4 58 N/A “P ARITY ERROR A T UNKNOWN LOCA TION” Parity error during memory test at unknown location. N/A “P ARITY ERROR A T LOCA TION XXXXXX” Parity error during memory test at the indicated location. N/A “NO INTERRUPTS FROM TIMER 0” T imer 0 of the clock timer controller does no t generate system interrupts correctly .
59 Chapter 4 Index of Symptom-to-FRU Error Message LCD-Related Symptoms Symptom / Error Action in Sequence LCD backlight doesn't work LCD is too dark LCD brightness cannot be adjusted LCD contrast cannot be adjusted Enter BIOS Utility to execute “Load Setup Defaults” on Exit screen, then reboot system.
Chapter 4 60 PCMCIA-Related Symptom s Symptom / Error Action in Sequence System cannot detect the PC Card (PCMCIA) PCMCIA slot assembly Main board PCMCIA slot pin is damaged. PCMCIA slot assembly Memory-Related Symptoms Symptom / Error Action in Sequence Memory count (size) appears different from actual size.
61 Chapter 4 NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undete rmined Problems” on page 62. Peripheral-Related Symptom s Symptom / Error Action in Sequence System configuration does not match the installed devices.
Chapter 4 62 Undetermined Problems The diagnostic proble ms does not identify wh ich adapter or device failed, which in stalled devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedure s to isolate the fail i ng FRU (do not isolate non-defective FRU).
Chapter 5 63 Top View Item Description Item D escription JP1 CRT CONN JP17 ODD CONN JP2 Parallel Port JP18 SPK CONN JP3 IEEE1394 CONN JP19 TP/B CONN JP4 TV -OUT CONN JP20 MIC JACK JP5 RJ1 1/RJ45 CONN .
64 Chapter 5 Bottom View Item Description Item D escription JP25 SO-DIMM Socket U45 SIO Controller JP26 SO-DIMM Socket U29 IEEE1394 Controller U35 CarBus Controller U37 EC.
Chapter 5 65 SW1 Settings (Lid switch) SW3 Settings(Kill Switch) No. Setting Function 1 NONE Function 2 LCD BACKLIGHT OFF Function 3 ST AND BY Function 4 HIBERNA TE No.
Chapter 6 66 This chapter gives you the FRU (Field Replaceable Unit) listing in global configurati ons of T r avelMate 4050 series product. Refer to this chapter whenever ordering for part s to repair or for RMA (Return Merchandise Authorization).
67 Chapter 6 Exploded Diagram.
Chapter 6 68.
69 Chapter 6 Parts Picture Partname Description Part Number ADAPTER ADAPTER - LITEON 65W , 3 PIN, P A-1650-02CA ADAPTER - LITEON 65W 3 PIN, P A- 1650-02CR AP .06503.006 ADAPTER - DEL T A 65W , 3 PIN, ADP-65DB ADAPTER - DEL T A 65W ,3 PIN, ADP- 65DB AP .
Chapter 6 70 CABLES POWER CORD US (3Pin) POWER CORD US (3Pin) 27.T35V5.001 POWER CORD EC (3Pin) POWER CORD EC (3Pin) 27 .T35V5.002 POWER CORD AUS (3Pin) POWER CORD AUS (3Pin) 27.T35V5.003 POWER CORD UK (3Pin) POWER CORD UK (3Pin) 27.T35V5.004 POWER CORD SWISS (3Pin) POWER CORD SWISS (3Pin) 27 .
71 Chapter 6 THERMAL COVER THERMAL COVER 33.T70V5.002 MDC COVER MDC COVER 33.T70V5.003 MDC+BLUET OOTH COMBO COVER PLA TE W/ ANTENNA MDC+BLUETOOTH COMBO COVER PLA TE W/ANTENNA 33.T70V5.004 COMMUNICA TION MODULE ANTENNA SET ANTENNA SET 50.T70V5.001 CPU/PROCESSOR NA INTEL PENTIUM M BANIAS 1.
Chapter 6 72 COMBO D RIVE DVD/CDRW COMBO MODULE 24X QSI SBW- 242C DVD/CDRW COMBO MODULE 24X QSI SBW-242C 6M.T70V5.001 DVD/CDRW COMBO MODULE 24X HLDS GCC- 4243N DVD/CDRW COMBO MODULE 24X HLDS GCC-4243N 6M.T70V5.002 DVD DUAL MODULE QSI SDW-082 DVD DUAL MODULE QSI SDW-082 6M.
73 Chapter 6 HDD CARRIER SUB ASSY HDD CARRIER SUB ASSY 60.T70V5.005 KEYBOARD Picture Partname Description Part Number.
Chapter 6 74 KEYBOARD ZIPPY ARABIC KB.T350C.018 KEYBOARD BELGIUM KB.T350C.009 KEYBOARD BRAZILIAN PORTUGUESE KB.T350C.019 KEYBOARD CANADIAN FRENCH KB.T350C.020 KEYBOARD CHINESE KB.T350C.001 KEYBOARD CZECH KB.T350C.012 KEYBOARD DANISH KB.T350C.017 KEYBOARD FRENCH KB.
75 Chapter 6 LCD ASSY LCD MODULE 14.1 IN. XGA AU (B141XG0) W/ WIRELESS ASSY LCD MODULE 14.1 IN. XGA AU (B141XG0) W/WIRELESS 6M.T70V5.01 1 ASSY LCD MODULE 14.1 IN. XGA CMO (B141NB- L01) W/WIRELESS ASSY LCD MODULE 14.1 IN. XGA CMO (B141NB-L01) W/WIRELESS 6M.
Chapter 6 76 INVERTOR BOARD LCD INVERTER LCD INVERTER 19.T70V5.001 CASE/COVER/BRACKET ASSEMBL Y LCD P ANEL WITH LOGO & ANTENNA LCD P ANEL WITH LOGO & ANTENNA 60.T70V5.006 LCD BEZEL - 14 IN. LCD BEZEL - 14 IN. 60.T70V5.007 LCD BEZEL -15 IN. LCD BEZEL -15 IN.
77 Chapter 6 LCD BRACKET R 15 IN. LCD BRACKET R 15 IN. 33.T70V5.010 PCMCIA SLOT PCMCIA SLOT LB.T7002.001 LCD CABLE LCD WIRE CABLE - 14 IN. LCD WIRE CABLE - 14 IN. 50.T70V5.002 LCD WIRE CABLE - 15 IN. XGA LCD WIRE CABLE - 15 IN. XGA 50.T70V5.003 MISCELLANEOUS LCD RUBBER LCD RUBBER 47.
Chapter 6 78 MAINBOARD W/ PCMCIA SLOT , W/O 1394 & TV OUT MAINBOARD W/ PCMCIA SLOT , W/O 1394 & TV OUT LB.T7002.001 HEA TSINK THERMAL MODULE THERMAL MODULE 60.T70V5.009 POINTING DEVICE TOUCHP AD (SYNAP TICS TM41PDA357) TOUCHP AD (SYNAPTICS TM41PDA357) 56.
App e ndix A 79 TravelMate4050 G1&G2 Model Number CPU LCD Memory HDD Optical Bluetoo th Wireless LAN Battery 4050L PM 710 (1.4GHz/2M) 15.0" XGA DDR333 1x256MB 40GB 24x Combo N 802.1 1b/g- Swallow Li-lon- Swallow 8cell 4051L PM 715 (1.5GHz/2M) 15.
App e ndix B 80 This computer ’s compat ibility is tested and verified by Acer ’s internal testing department. All of it s system functions are tested under Wi ndows XP Home and Windows XP Professional environment. Refer to the following lists for components, adapter card s, and peripherals which have passed these tests.
81 App e nd i x B Microsoft Windows XP / Professional Environment Test Model V endor Description CPU Pentium M I ntel RH80535GC021 1M RH80535GC0251M RH80535GC0291M TBD Dothan Intel Pentium M 710 1.
App e ndix B 82 ODD Combo drive 12.7mm QSI SBW-242C HLDS GCC-4243N DVD-Dual QSI SDW-082 Lite-On SOSW -852S DVD-Super Multi HLDS GSA-4080N Memory 256MB DDRI333 Nanya NT256D 64SH8BAGM-6K Infineon HYS64D32020GDL-6-C 32x64 (.
App e ndix C 83 This section describe s online techni cal support servic es available to hel p you repair your Acer Systems. If you are a distributor , deal er , ASP or TPM, please re fer your technical que ries to your local Acer branch office. Acer Branch Offices and Regional Business Un its may access our website.
An important point after buying a device Acer TravelMate 4050 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Acer TravelMate 4050 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Acer TravelMate 4050 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Acer TravelMate 4050 you will learn all the available features of the product, as well as information on its operation. The information that you get Acer TravelMate 4050 will certainly help you make a decision on the purchase.
If you already are a holder of Acer TravelMate 4050, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Acer TravelMate 4050.
However, one of the most important roles played by the user manual is to help in solving problems with Acer TravelMate 4050. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer TravelMate 4050 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
