Acer Extensa 4420 TravelMate 4520/4220, Extensa 4420/4120 Service Guide
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- Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 1
Acer TravelMate 4520 Notebook Computer Service Guide Service guide files and updates are available on the Acer CSD web site at http://csd.acer.com.tw PRINTED IN TAIWAN - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 2
Revision History Refer to the table below for the updates made on this version of the TravelMate 4520 Notebook Computer Service Guide. Date Chapter Updates II - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 3
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 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 4
in this service guide. SCREEN MESSAGES Denotes actual messages that appear on screen. NOTE Gives additional information related to the current topic. WARNING CAUTION IMPORTANT Alerts you to any physical risk or system damage that might result from doing or not doing specific actions. Gives - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 5
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 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 6
VI - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 7
Menus 16 BIOS Flash Utility 24 Launch Manager 25 Disassembly Tools 27 Stages of the Disassembly Process 27 Equivalent Torque Values 27 System Disassembly 27 Chapter 3 27 System Screw List 28 Pre-disassembly Procedure 28 External Modules Disassembly 29 External Modules Disassembly Flowchart 29 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 8
Problems 81 Online Support Information 82 System Block Diagram 83 System Block Diagram and Board Layout 83 Chapter 5 83 83 System Board Layout 84 Top View 84 Bottom View 85 System Switch 86 FRU (Field Replaceable Unit) List 87 Chapter 6 87 Aspire 5910 Exploded Diagram 88 TravelMate 4520 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 9
Test Compatible Components 113 Appendix B 113 Technical Specifications 117 117 Appendix C 1 117 117 Index 127 Table of Contents IX - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 10
Table of Contents X - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 11
solution supporting the Acer SignalUp™ wireless technology Memory T Two DIMM slots supporting DDR2 533/667 MHz memory modules T Maximum 4 GB system memory using two 2 GB soDIMM modules T Supports dual-channel (interleaving) memory mode T 1 MB flash BIOS and shadow RAM support Storage subsystem - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 12
built-in Acer 3DSonic stereo speakers T One built-in stereo microphone T Intel High Definition Audio support T MS-Sound compatible Communications T Multiple network connection options t WLAN via Acer InviLink 802.11b/g Wi-Fi CERTIFIED solution; Acer SignalUp compatible t WPAN via Bluetooth® 2.0+EDR - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 13
VGA (external monitor) t DC-in jack T Acer Bio-Protection fingerprint solution with FingerLaunch, FingerNav and PBA (Pre-Boot Authentication) support provides enhanced security Status indicators T Left edge: HDD activity, Num Lock, and Caps Lock T Front edge: power status, battery charge; Bluetooth - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 14
Acer Launch Manager t Microsoft Office Ready 2007 t NTI Shadow t Adobe®Reader® t CyberLink® PowerProducer® t NTI CD-Maker™ t Norton Internet Security™ Physical specifications T Dimensions (width x depth x height): 331 x 248 x 29.7/41.08 mm (13.03 x 9.76 x 1.17/1.62 in) T Weight (with 6-cell battery - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 15
be a 4-way scroll button or an Acer Bio-Protection fingerprint reader. Palmrest Comfortable support area for your hands when you use the keyboard. Easy-launch buttons Press to launch frequently used programs/functions. Go to page 11 for more information. Power button Turns the computer on and - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 16
transfer data at speeds of up to 4 Mbps at a distance of up to one meter. Connects to USB 2.0 devices (e.g. USB mouse, USB camera). Accepts audio line . Headphone jack Accepts headphones or external speakers. Bluetooth switch Toggles the Bluetooth function on and off. WLAN switch Speakers Lid - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 17
Left View Number 1 Icon Item Kensington lock notch # Icon Item Description Description Accepts a Kensington-compatible computer security lock. 2 Optical disc drive Accepts CDs or DVDs (drive type maybe slot-load or (ODD) tray-load depending on model). 3 ODD access indicator * Lights up - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 18
port (RJ-45) VGA port DC-in jack Connects to a television or display device with an Svideo input. Supports both NTSC and PAL standards. Connects to an Ethernet 10/100/1000-based network (selected models). Connects to an external display device (e.g., external monitor, LCD projector). Connects to - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 19
Base View Number 1 2 3 4 5 6 Icon Item Battery lock Description Secures the battery pack in position. Battery pack Battery release latch Provides power to the computer. Releases the battery pack for removal. Ventilation slots Acer DASP pad Lower case cover Enable the computer to stay cool, - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 20
the computer is powered on. T Amber when the computer is in standby or hibernation mode. 5 Battery charge * Indicates the battery charging state. It lights up: T Amber when the computer is charging. T Green when battery charging is complete. 6 Bluetooth * Indicates the Bluetooth status. It - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 21
side of the keyboard are special keys for launching commonly-used programs. Use Launch Manager to customize the function assigned to any of these keys. Go to page 25 for instructions. Number 1 2 3 1 Icon Indicator Description Acer Empowering key * Press to launch the Acer Empowering Technology - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 22
provides one-touch manageability for a more secure and smarter work mode. Number 1 Icon Indicator Lock 2 Presentation 3 Sync Description Press to launch the Windows Lock window. This enable users to protect the system from unauthorized access. If your computer is equipped with an Acer Bio - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 23
Output System (BIOS). Since most t Configuring the power management modes t Setting up battery with a new one. NOTE: For ease of reading, Phoenix TrustedCore Setup Utility will be simply referred to as "Setup" or "Setup Utility" in this Service Guide. The screenshots used in this guide display - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 24
POST, press F2. If you fail to press F2 before POST is completed, you will need to restart the computer. The first page to be displayed will be the Information menu. Use the left ( ) and right ( ) arrow keys to move between selections on the menu bar. Menu bar Legend bar 14 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 25
menu screen displays a field help panel-Item Specific Help panel. This panel displays the help one of the menu screens, the Exit menu displays. T On a General Help window, closes the window. To bring up the General Help window. This window lists other Setup navigation keys that are not displayed - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 26
menu screen displays a summary of your computer hardware information. These information are necessary for troubleshooting and may be required when asking for technical support. Field CPU Type CPU Speed IDEO Model Name IDEO Serial Number ATAPI Model Name System BIOS Version VGA BIOS Version KBC - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 27
Disabled Enabled When enabled, the "Press F12 to enter Multi-Boot Menu" message is displayed during POST. Disabled Enabled When enabled, pressing Alt-F10 during POST will activate the Acer disc-to-disc recovery function. The function allows the user to create a hidden partition on the hard drive - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 28
Security The Security menu screen displays system passwords options to help safeguard and protect hibernation). Note: If this password is the same as the power-on password, it will not be required anymore at boot-up. Referred to as power-on password. When set, the user or supervisor password will - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 29
eight alphanumeric characters-A - Z, 0 - 9, and ';' (for a French keyboard). • System passwords are case-insensitive. • Password re-try is limited the new password. 4. Press Enter. The corresponding password status field displays Set to indicate that a password has been enabled. 5. Press F10 to - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 30
confirm the password removal. 4. Press Enter. The corresponding password status field displays Clear to indicate that the password has been disabled. 5. Press F10 to it. 2. Unplug the power cord from the computer. 3. Remove the lower case cover according to the instructions described on page 32. 4. - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 31
code for unlock hard disk. 1. Open the computer in a DOS environment. 2. Type the following command: A\> unlock6 XXXXX 00 3. Press Enter to display the command options. 4. Select option 2 (upper case ASCII code), then press Enter. 5. Write down the generated master password. 6. Reboot the computer - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 32
Boot The Boot menu screen allows users to set the drive sequence in which Setup attempts to boot the operating system. By default, Setup searches for boot devices in the order shown in the screen below. To set the boot drive sequence: 1. Press or to select a bootable device. 2. Press F6 to move the - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 33
displays the several options on how to quit from the Setup Utility. Select any of the exit options then press Enter. Option Exit Saving Changes Exit Discarding Changes Load Setup Defaults Discard Changes Save Changes Description Saves changes made and closes the Setup Utility. Keyboard shortcut - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 34
Recovery Diskette in Windows XP of Vista before you use the flash utility. T Do not install memory-related drivers (XMS, EMS, DPMI) when you use the flash utility. T Place the computer in AC mode during the BIOS flash procedure. If the battery pack does not contain enough power to finish the BIOS - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 35
allows users to configure three of the easy-launch keys-Acer Empowering, Web browser, and Mail. To configure an easy-launch key: 1. Select Start | All Programs | Launch Manager. 2. Select which key to configure, then click the Add button opposite it. 3. You can set the key to open a particular - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 36
26 Chapter 2 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 37
This chapter provides step-by-step instructions on how to disassemble the notebook computer for maintenance and troubleshooting purposes. Disassembly Tools In performing the disassembly process, you will need the following tools: T Wrist-grounding strap and conductive mat for preventing - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 38
.736 86.00D77.320 86.00F19.735 86.00D52.630 Pre-disassembly Procedure Before proceeding with the disassembly procedure, perform the steps listed below: 1. Turn off the power to the computer and all peripherals. 2. Unplug the power cord from the computer. 3. Unplug all peripheral cables from the - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 39
External Modules Disassembly External Modules Disassembly Flowchart Turn off computer and disconnect power cord SD dummy card EXpressCard dummy card Battery pack L-case cover (Ax1, Bx7, Cx1) DIMM WLAN board (Dx2) HDD assembly ODD assembly Fan (Dx1) Hard drive shielding (Ex2) Hard drive - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 40
Removing the SD Dummy Card 1. Push against the card, as if you were pushing it further into the slot, letting the card spring out. 2. Pull the SD dummy card out of its slot. Removing the PC Card Dummy Card 1. Press the PC card slot eject button to pop it out, then press it again to eject the dummy - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 41
2. Pull the PC Card dummy card out of its slot. Removing the Battery Pack 1. Turn the unit over with the base facing upward. 2. Slide the battery lock to the unlock position. 3. Slide and hold the battery release latch, then remove the battery pack from its bay. Chapter 3 31 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 42
Removing the Lower Case Cover 1. Remove the screws securing the lower case cover. Step 1 Type M2 x L8 BZN+NYLOK M2 x L4 BZN Quantity 1 4 Color Black Black Torque 1.6 kgf-cm +/-15% 1.6 kgf-cm +/-15% 2. Pry the lower case cover from the main unit, then remove it. Removing the Memory Modules 1. - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 43
2. Remove the memory module from its slot. 3. Repeat steps 1 and 2 to remove the second memory module. Removing the WLAN Board 1. Peel off the end of the bar code tape securing the WLAN antennas. 2. Disconnect the antennas from the WLAN board, then move them away from the board. Chapter 3 33 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 44
3. Remove the screws securing the WLAN board. Step 3 Type M2 x L4 BZN+NYLOK Quantity 2 Color Silver Torque 1.6 kgf-cm +/-15% 4. Remove the WLAN board from its slot (MINIC1). Removing and Dismantling the HDD Assembly 1. Use the clear plastic tab and the black mylar tape to disconnect the HDD - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 45
2. Remove the HDD assembly from the main unit. 3. Remove the HDD rubber enclosure from the assembly. 4. Remove the screws on the HDD module shielding. Step 4 M3 x L4 Type Quantity 2 Color Silver Torque 3 kgf-cm +/-15% Chapter 3 35 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 46
5. Remove the shielding from the HDD module. Removing and Dismantling the ODD Assembly 1. Remove the screw securing the ODD assembly to the main unit. Step 1 M2.5 x L8 Type Quantity 1 Color Black Torque 3 kgf-cm +/-15% 2. Use a plastic flat screwdriver to push the ODD assembly out of the main - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 47
3. Pull the ODD assembly out of its bay. 4. Remove the screws securing the ODD bracket. Step 4 M3 x L4 Type Quantity 2 Color Silver Torque 3 kgf-cm +/-15% 5. Detach the ODD bracket from the module. Chapter 3 37 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 48
Removing the Processor Cooling Fan 1. Disconnect the fan cable from its system board connector (FAN1). 2. Remove the screws securing the cooling fan. Step 2 Type M2 x L4 BZN+NYLOK Quantity 2 Color Black Torque 1.6 kgf-cm +/-15% 3. Peel off the aluminum tape on the top edge of the cooling fan. - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 49
4. Remove the cooling fan from the main unit. Removing the Heat Sink 1. Remove the screws securing the heat sink. Step 1 Type M2 x L2.5 BZN+NYLOK Quantity 5 Color Silver Torque 1.6 kgf-cm +/-15% 2. Carefully pull the heat sink from the unit base, then remove it from the system board. Chapter - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 50
Removing the Processor 1. Use a flat screwdriver to turn the processor socket lock to the counter-clockwise to the unlock position (note the unlock icon). Torque value: 3 kgf-cm +/-15% 2. Hold the processor by its edges and remove it from its socket (U52). IMPORTANT: When installing a processor, - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 51
main unit. Main Unit Disassembly Flowchart Main unit Keyboard Middle cover LCD module (Cx2, Hx2) Power board (Dx4) Upper case (Ix1, Cx10, Jx2, Dx3) ) Lower case Power FPC cable Modem board (Fx2) Speaker case (Dx3, Kx3) Bluetooth board E-key board (Fx3) Subwoofer Launch board (Dx2) USB - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 52
Removing the Middle Cover 1. Open the LCD panel completely to facilitate the easy removal of the from the U-case. 3. Remove the middle cover from the main unit. Removing the Keyboard 1. Remove the screws securing the keyboard. Step 1 Type M2 x L2.5 BZN+NYLOK 42 Quantity 2 Color Silver Torque - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 53
2. Detach the top edge keyboard from the upper case, then turn it over the palmrest to gain access to the keyboard cable. 3. Disconnect the keyboard cable from its system board connector (KB1) to completely detach the keyboard from the main unit. Removing the LCD Module 1. Peel off the silver acetic - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 54
from its system board connector (LCD1). 3. Peel off the masking tape securing the WLAN and internal microphone cables to the U-case. 4. Disconnect the LCD cable from its system board connector (LCD1). 5. Pull out the WLAN antennas from underneath the computer base, and then release them from their - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 55
6. Disconnect the internal microphone cable from its system board connector (INTMIC1). 7. Release the internal microphone cable and the WLAN antenna (white) from their U-case latches. 8. Release the WLAN antenna (black) from their U-case latches. 9. Close the - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 56
the notebook lid again. 12. Remove the hinge screws securing the LCD module. Step 12 Type M2.5 x L12 BZN+NYLOK Quantity 2 Color Silver Torque 4 kgf-cm +/-15% 13. Detach the LCD module from the main unit. Proceed to page 57 for instructions on how to disassemble the LCD module. 46 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 57
Removing the Upper Case 1. Disconnect the following system cables from their board connectors. t Notebook lid cable (LID1) t Fingerprint board cable (FP1) t Touchpad board cable (TPAD1) Chapter 3 47 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 58
t LED board cable (LEDB1) 2. Turn the unit over to the base side. 3. Remove the lower case screws securing the upper case. Step 3 Type M2.5 x L4 BZN+NYLOK Quantity 11 Color Black Torque 3 kgf-cm +/-15% 4. Turn the unit over again and remove the single top upper case screw. Step 4 Type M2.5 x - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 59
5. Detach the upper case from the lower case. Removing the LED Board 1. Locate the LED board on the upper case underside. 2. Remove the screw securing the LED board. Step 2 Type M2 x L3 BZN+NYLOK Quantity 1 Color Silver Torque 1.6 kgf-cm +/-15% 3. Peel off the LED board cable from the upper - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 60
Removing the Fingerprint and Touchpad Boards 1. Disconnect the fingerprint board cable. 2. Detach the fingerprint board cable from the upper case. 3. Disconnect the touchpad board cable. 4. Detach the fingerprint board cable from the upper case. 50 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 61
5. Remove the screws securing the fingerprint board bracket. Step 5 Type M2 x L4 BZN+NYLOK Quantity 4 Color Silver Torque 1.6 kgf-cm +/-15% 6. Detach the fingerprint board bracket from the upper case. 7. Remove the screws securing the fingerprint board. Step 7 Type M2 x L4 BZN+NYLOK - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 62
8. Detach the fingerprint board from its bracket. 9. Carefully pry loose the touchpad board from the upper case to detach it. CAUTION: The touchpad board is glued to the upper case. Remove the touchpad board only if it is defective. Removing the Card Reader Board 1. Remove the screws securing the - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 63
2. Detach the card reader board from its connector (CRB1). Removing the Bluetooth Board 1. Disconnect the Bluetooth board cable from its system board connector (BLUE1). 2. Detach the Bluetooth board from the left speaker. Chapter 3 53 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 64
% 3. Detach the system board from the upper case, then turn it over to gain access to the modem board. Proceed to the next section for instructions on how to remove the modem board. 54 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 65
Removing the Modem Board 1. Remove the screws securing the modem board. Step 1 Type M2 x L3 BZN+NYLOK Quantity 2 Color Silver Torque 1.6 kgf-cm +/-15% 2. Remove the modem board from its system board connector (MDC1), then disconnect the modem cable from the board. Removing the Speakers 1. - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 66
2. Release the speaker cable from its lower case latches. 3. Remove the speakers from the lower case. 56 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 67
LCD Module Disassembly LCD Module Disassembly Flowchart LCD module LCD bezel (Jx6) LCD panel (Lx4, Dx2) LCD panel brackets (Fx6) LCD chassis Inverter board LCD-CCD cable LCD module hinge (Lx2) CCD board Screw D F J L M Type M2 x L4 BZN+NYLOK M2 x L3 BZN+NYLOK M2.5 x L6 BZN+NYLOK M2.5 x L5 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 68
Removing the LCD Bezel 1. Remove the rubber pads securing the LCD bezel screws. 2. Remove the screws securing the LCD bezel. Step 2 Type M2.5 x L6 BZN+NYLOK Quantity 6 Color Black Torque 3 kgf-cm +/-15% 3. Carefully pry the LCD bezel open and remove it from the LCD module. 58 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 69
Removing the Inverter Board 1. Remove the screws on the lower edge of the LCD panel. Step 1 Type M2 x L3 BZN+NYLOK Quantity 3 Color Black Torque 1.6 kgf-cm +/-15% 2. Turn the board over and disconnect the 2P cable. 3. Disconnect the inverter cable from the board. Chapter 3 59 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 70
Removing the LCD Module Hinges 1. Remove the screws securing the LCD module hinges. Step 1 Type M2.5 x L5 BZN+NYLOK Quantity 2 Color Black Torque 3 kgf-cm +/-15% 2. Remove the LCD module hinges from the LCD chassis. Removing the LCD Panel 1. Disconnect the CCD board cable. 60 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 71
2. Release the WLAN antennas from the left and right LCD brackets. 3. Remove the LCD panel from its chassis. Removing the LCD-CCD Cable 1. Peel off the LCD-CCD cable from the bottom edge of the LCD panel. Chapter 3 61 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 72
2. Detach the adhesive tab on the cables's LCD connector, then disconnect the cable from the LCD panel PCB. Removing the LCD Panel Brackets T Remove the screws securing the LCD panel brackets. Step * Part Number and Type M2 x L3 BZN+NYLOK Quantity 8 Color Silver Torque 1.6 kgf-cm +/-15% 62 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 73
Removing the Internal Microphone and the CCD Board 1. Peel off the aluminum foil tabs and acetic tape securing the microphone cable. 2. Carefully remove the internal microphone from the LCD chassis. 3. Remove the CCD board from the LCD chassis. Chapter 3 63 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 74
Removing the WLAN Antennas 1. Peel off the aluminum foil tabs securing the WLAN antennas. 2. Carefully detach the WLAN antenna from the LCD chassis. 64 Chapter 3 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 75
Problem Power failure POST failure Specific component failure Intermittent failure Symptom The power indicator does light up or stay lit. POST does not complete. No beep or error codes issued. POST detects an error and displayed messages on screen. Dysfunctional component symptoms (e.g. blurred LCD - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 76
Follow the instructions in the message window. If an Keyboard Test. If the tests detect a keyboard problem, do the following one at a time to correct the problem. 1. Reconnect the keyboard cable. 2. Replace the keyboard. 3. Replace the system board. The following auxiliary input devices are supported - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 77
Check Memory errors might stop system operations, display error messages, or cause the system Follow the instructions in the message window. Power System Check To verify the cause of the power problem, power on the computer using the AC adapter, and then the battery pack. 1. Remove the battery pack. - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 78
battery pack. Using the OS control: 1. Open the Power Management setting in the Windows Control Panel screen. 2. On the Power Meter tab, confirm that the Current Power Source and Total Battery Power This symptom is not a hardware problem. No service actions are necessary if the pointer movement stops in - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 79
servicing a computer. If the symptom is not listed, see "Undetermined Problems" on page 81. NOTE: Most of the error messages occur during POST. Some of them display CMOS Battery Bad CMOS Checksum Error System disabled. Incorrect password is specified. Battery Critical Low In this situation BIOS will - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 80
Failure Fixed Disk Stuck Key Keyboard Error Keyboard Controller Failed Keyboard locked - Unlock key switch Monitor type does not match CMOS - Run Setup Shadow RAM Failed at offset: nnnn System RAM Failed at offset: nnnn Extended RAM Failed at offset: nnnn System battery is dead - Replace and run - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 81
Error - No Beep Error Message No beep, power indicator turns off and the LCD screen is blank. No beep, power indicator turns on but the LCD screen is blank. FRU/Action in Sequence Power source (battery pack and power adapter). Refer to the "Power System Check" section on page 67. Ensure every - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 82
. Reconnect the LCD-CCD cable. LCD-CCD cable Inverter board LCD panel System board No beep, power indicator turns on Power Management Load alternate registers with initial POST values Restore CPU control word during warm boot Initialize PCI Bus Mastering devices Initialize keyboard controller BIOS - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 83
(optional) Shadow video BIOS ROM Display BIOS copyright notice Display CPU type and speed Initialize EISA board Test keyboard Set key click if enabled Test for unexpected interrupts Initialize POST display service Display prompt "Press F2 to enter SETUP" Disable CPU cache Test RAM between 512 and - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 84
POST Routine Description Display possible high address for UMB recovery Display error messages Check for configuration errors Check for keyboard errors Set ROMs. One long, two short beeps on checksum failure. Check for SMART drive (optional) Shadow option ROMs Set up Power Management Initialize - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 85
done-prepare to boot operating system One short beep before boot Terminate Manager (PEM) Initialize error logging Initialize error display chipset Initialize the bridge Initialize the CPU Initialize the system timer Initialize system I/O Check force recovery boot Checksum BIOS ROM Go to BIOS - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 86
Code F0h F1h F2h F3h F4h F5h F6h F7h Beeps 1 POST Routine Description Initialize interrupt vectors Initialize Run Time Clock Initialize video Initialize System Management Mode Output one beep before boot Boot to Mini DOS Clear Huge Segment Boot to Full DOS 76 Chapter 4 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 87
panel System board Inverter board LCD-CCD cable LCD panel System board Power-related Symptoms Symptom/Error Power shuts down during operation The system won't power on. The system won't power off. Battery won't charged Action in Sequence Power source (battery pack and power adapter). Refer to the - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 88
board Audio-related Symptoms Symptom / Error In Windows multimedia programs, no sound comes from the computer. Internal speakers emit noise or emit no sound. Audio driver Speaker System board Speaker System board Action in Sequence Power Management-related Symptoms Symptom / Error Action in - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 89
Print problems Keyboard (one or more keys) does not work. Touchpad does not work. Internal modem does not work correctly. Action in Sequence Run the Setup Utility, then press F9 to load the system defaults. Reconnect hard disk/CD-ROM/diskette drives. Press Fn+F5, LCD/CRT/both display switching - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 90
defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1. Run the advanced diagnostic test for the system board in loop mode at least ten times - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 91
devices: t Non-Acer devices t Printer, mouse, and other external devices t Battery pack t Hard disk drive t DIMM t Optical drive/diskette drive t Cards in the ExpressCard/54 and card reader slots 4. Power on the computer. 5. Determine if the problem has changed. 6. If the problem does not recur - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 92
whenever you need them. In the Support & Downloads tab you can download information materials for all of Acer notebook, desktop and server models including: T Service guides for all models T User's manuals T Training materials T BIOS updates T Software utilities T Spare parts lists T Technical - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 93
Chapter 5 System Block Diagram and Board Layout System Block Diagram Chapter 5 83 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 94
layout of the TravelMate 4520 system board. Top View Item 1 2 3 4 5 6 7 8 9 10 11 12 13 Code LCD1 LID1 CN1 U40 RTC1 CRB1 SPKR1 BLUE1 FP1 TPAD1 INTMIC1 LEDB1 KB1 Description LCD-CCD cable connector Notebook lid connector PC card slot ??? CMOS battery (RTC battery) Card reader board connector - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 95
Item 1 2 3 4 5 6 7 8 9 10 11 Code MDC1 BAT1 ODD1 DMI U57 MINIC1 U72 SATA1 U52 U53 FAN1 Description Modem board connector Battery pack connector Optical drive connector soDIMM slots ATI M690G chipset WLAN board slot ??? Hard drive connector Processor socket ??? Fan cable connector Chapter 5 85 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 96
System Switch If you have enabled the Password on Boot field and you forget the supervisor password, you will not be able to boot up the computer. Your TravelMate notebook has a hardware pin (G41) for clearing a lost supervisor password. Go to page 20 for related instructions. 86 Chapter 5 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 97
information available on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on the printed Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 98
Aspire 5910 Exploded Diagram 88 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 99
TravelMate 4520 FRU List Category Audio-related No. Part Name and Description Acer Part No. Boards Chapter 6 89 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 100
Category No. Part Name and Description Acer Part No. Cables 90 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 101
Category No. Part Name and Description Acer Part No. Fan Hard Disk Drive Chapter 6 91 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 102
Category No. Part Name and Description Acer Part No. Keyboard 92 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 103
Category No. Part Name and Description Acer Part No. Keyboard (TM) LCD Panel Chapter 6 93 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 104
Category No. Part Name and Description Acer Part No. Mechanical parts 94 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 105
Category No. Part Name and Description Acer Part No. Memory Optical Disc Drive Chapter 6 95 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 106
Category No. Part Name and Description Acer Part No. Power-related Processor 96 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 107
Category No. Part Name and Description Acer Part No. Screws Miscellaneous Chapter 6 97 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 108
Category Audio-related No. Part Name and Description Acer Part No. Boards 98 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 109
Category No. Part Name and Description Acer Part No. Cables Chapter 6 99 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 110
Category No. Part Name and Description Acer Part No. Fan Hard Disk Drive 100 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 111
Category No. Part Name and Description Acer Part No. Keyboard Chapter 6 101 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 112
Category No. Part Name and Description Acer Part No. Keyboard (TM) LCD Panel 102 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 113
Category No. Part Name and Description Acer Part No. Mechanical parts Chapter 6 103 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 114
Category No. Part Name and Description Acer Part No. Memory Optical Disc Drive 104 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 115
Category No. Part Name and Description Acer Part No. Power-related Processor Chapter 6 105 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 116
Category No. Part Name and Description Acer Part No. Screws Miscellaneous 106 Chapter 6 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 117
TravelMate 4520 Series computer model configurations. Model A (TravelMate B0 - Bluetooth board T60H928.01(Bluetooth) 56.25020.003 Wireless module Keyboard US-International 9J.N8882.K1D Touchpad board Synaptics TM00450-001 56.17022.001 Battery pack Simplo 6 cell, 2.0AHR BT.00607.003 Power - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 118
Model B (TravelMate 4520) System Internal Part Number: 91.4U101.002G System Board Internal Part Number: 55.4U101.001G/55.4U101.M01G Component Processor North bridge South bridge LCD module Memory Hard disk drive (SATA) Optical disc drive Modem board LAN controller Bluetooth board Wireless module - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 119
C (TravelMate 4520) System Internal Part Number: 91.4U101.003G System Board Internal Part Number: 55.4U101.011G/55.4U101.M02G Component Description Part Number Processor Turion 64 X2 TL64 rev.G KC.TTL02.64G North bridge ATI RS690M 71.RS690.M05 South bridge ATI SB600 71.SB600.M03 LCD - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 120
Model D (TravelMate 4520) System Internal Part Number: 91.4U101.004G System Board Internal Part Number: 55.4U101.011G/55.4U101.M02G Component Processor North bridge South bridge LCD module Memory Hard disk drive (SATA) Optical disc drive Modem board LAN controller Bluetooth board Wireless module - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 121
Model E (TravelMate 4520) System Internal Part Number: S2.TLD0Z.001 System Board Internal Part Number: 55.4U101.001G/55.4U101.M01G Component Processor North bridge South bridge LCD module Memory Hard disk drive (SATA) Optical disc drive Modem board LAN controller Bluetooth board Wireless module - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 122
112 Appendix A - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 123
procedures, please refer to the TravelMate 4520 series Compatibility Test Report released by the Acer Mobile System Testing Department. Hardware Compatibility Tests Item VGA/DVD-D/S-Video Port Test CRT monitor LCD monitor Projector USB Port Test USB mouse USB keyboard USB joystick USB speaker USB - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 124
802.11a Access point 802.11g Access point 802.11n Bluetooth Access Point Test Bluetooth Device Test Specification ATEN UH-204 4 -port USB hub IOGEAR 4- 1394) Transcend 2.5" Portable 80 GB HDD Note: Place computer in AC power mode when transferring large amount of data. Plextor DVD+R/RW LG DVD+R/RW - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 125
Hardware Compatibility Tests Item Specification PC Card Test LAN/modem card CardBus Ethernet 10/100 32Bit(CBE-10/100BTX) Storage card IOmega Click! 40 MB Hitachi Microdrive 4 GB USB 2.0 card - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 126
Games and Software Compatibility Tests Games Item Specification Blizzard q WarCraft III (CD-04-062) q WarCraft III and applications PowerDVD Windows DVD Maker NTI-CD Maker Acrobat Reader Microsoft Office Norton Internet Security Acer Launch Manager Wireless AP Bluetooth AP 116 Appendix - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 127
nm technology Core stepping B2 CPUID string 0X6F6 Thermal design 34W power Thermal specification 100 ° C Core voltage 1.0375 - 1.30V Socket type LGA775 Core logic Mobile Intel 945PM Express Chipset T North bridge: 82945PM (MCH) T South bridge: 82801GBM/GHM (ICH7-M) Technologies T Intel - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 128
System Controllers Item WLAN controller Specification Options include: T Intel PRO/Wireless 3945ABG Network Connection T Intel Wireless Wi-Fi Link 4965AGN T Intel PRO/Wireless 2200BG Network Connection Memory Item Memory controller DIMM slot number Maximum memory size per socket Maximum memory - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 129
language support T Embedded numeric keypad T Inverted "T" cursor keys, 12 function keys, Windows® key, independent US and Euro dollar sign keys, and hotkey controls T Acer MediaTouch keys: play/pause, stop, previous, next, and record keys T Easy-launch keys: WLAN, Internet, email, Bluetooth, Acer - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 130
WOL) T ACPI 2.0 WLAN Controller Specification Dimensions (H x W x D) Weight Diversity Radio ON/OFF control Connector temperatures of 25 ° C to 35 ° C) Microsoft Windows XP (Professional, Home, Tablet), 2000 Microsoft Windows 2000, XP (32/ 64-bit), and Vista (32/64-bit) Wi-Fi CERTIFIED for 2.4 GHz - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 131
RJ-11 Right side Specification Bluetooth Interface Item Chipset Data throughput Protocol Interface Connector type Specification Foxconn Broadcom 2045 723 bps (full speed data rate) Bluetooth 1.1 (Upgradeable to Bluetooth 1.2 when SIG specification is ratified). USB 1.1 USB Battery Pack Item Type - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 132
Hard Disk Drive Specification Provider Model Part number Formatted capacity Number of disks Number of data heads Interface Seek time (average) Rotational speed Data transfer rate Internal Buffer to Host Buffer Dimensions (mm) Height Width Depth Weight Allowable voltage Temperature Operating Non- - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 133
CD-Text, Photo CD, Video CD 2 MB 5V DC LCD Panel Specification Model name Screen size Resolution (H x V) Color support Brightness (nits) Contrast ratio Viewing angle Power consumption (without inv) Outlines (W x H x D, mm) Weight Response time Electrical interface CMO N154I2 15.4" (wide) 1280x800 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 134
T INT 13h Extensions T PnP BIOS 1.0a T SMBIOS 2.4 or later T BIOS Boot Specification (Compal, Phoenix, Intel). T Simple Boot Flag 1.0 T Boot Block T PCI Bus Power Management Interface Specification T USB Specification 1.1/2.0 T IEEE 1394 1.0 T USB/1394 CD-ROM Boot Up support T PC Card Standard 1995 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 135
power managed in this state. T S3 Sleeping State T CPU set power down T VGA suspend T Audio power down T Hard disk power down T Optical drive power powered on. To further conserve power in a Working state, the processor enters a low-power state when the OS is idle. T C1 state - CPU halt instruction - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 136
126 Appendix C - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 137
microphone 5 microphone-in jack 6 speaker grill 6 specifications 119 B Basic Input/Output, see BIOS 13 battery pack charging indicator 10 location 9 lock 9 part number 96, 105 release latch 9 removing 31 troubleshooting 68 BIOS BIOS flash 24 BIOS recovery 24 check version 16 configuration utility 13 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 138
28 screw list 28 stages 27 tools 27 torque values 27 display compatibility test 113 controller specifications 119 features 2 LCD panel 5 S-Video/TV-out port 8 VGA port 8 video memory 17 E easy-launch keys 11, 12 Acer Empowering 11 Bluetooth 10 browser 11 configuring 11, 25 mail 11 programmable 11 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 139
removing 42 troubleshooting 66 L launch board part number 89, 98 launch button configuring 25 Launch Manager 25 LCD bezel removing 58 LCD brackets part number 94, 103 removing 62 LCD hinges part number 94, 103 removing 60 LCD module disassembling 57 removing 43 LCD module disassembly CCD board 63 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 140
ODD, see optical disc drive 7 Online Support Information 82 operating system 4 optical disc drive power Acer QuicCharge 3 battery pack 9 button 5 DC-in jack 8 disconnecting 28 indicator 10 power management 3 power management specification 125 power board part number 90, 99 power-on password 18 Power - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 141
Utility 24 Launch Manager 25 Phoenix TrustedCore Setup Util- ity 13 T torque values 27 touchpad board, removing 50 bracket, part number 95, 104 cable connector 84 cable, part number 91, 100 location 5 troubleshooting 68 touchpad board part number 90, 99 troubleshooting AC adapter 67 battery pack 68 - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 142
external FDD 66 keyboard 66 memory 67 optical disc drive 66 touchpad 68 U Undetermined Problems 81 upper case part number 95, 104 removing 47 USB 2.0 ports compatibility tests 113 front 6 left 7 right 8 USB board cable, part number 91, 100 part number 90, 99 user password 18 V VGA board part number - Acer Extensa 4420 | TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 143
Index 133