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                        TravelMate 7520/7520G/7220 Series 
Aspire 7420/7120 Series
Service Guide
Service guide files and updates are available
on the ACER/CSD web; for more information, 
please refer to http://csd.acer.com.tw
    
                                                                                                                                     PRINTED IN TAIWAN                                                                                                                                               
                    
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                        Revision History Please refer to the table below for the updates made on TravelMate 7520/7520G/7220 Series and Aspire  7420/7120 Series service guide. Date Chapter Updates II                                                                                                                                                                                                                                                                                                                                      
                    
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                        Copyright Copyright © 2007 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 r
                    
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                        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. IV          
                    
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                        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
                    
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                        VI                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                    
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                        Table of Contents System Specifications 1  Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Your Acer Notebook tour  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
                    
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                        Table of Contents External Modules Disassembly Flowchart  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61 Removing the Battery Pack  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 Removing the SD dummy card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Removing the PC and ExpressCard dummy cards  . . . . . . . . . . . . . . . . . . . . . .63 Removing the Lower Cover  . . . . . . . . . . . . . . . . . . . . . . . . . .
                    
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                        Table of Contents Jumper and Connector Locations 123 Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Bottom View  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 FRU (Field Replaceable Unit) List 129 TravelMate 7520/7520G/7220/7220G Exploded Diagram  . . . . . . . . . . . . . . . . . . . .130 Model Definition and Configuration 140 TravelMate 7520/7520G/
                    
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                        Table of Contents 4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
                    
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                        Chapter  1 System Specifications Features Below is a brief summary of the computer’s many feature: Platform and memory  AMD Turion™ 64 X2 dual-core mobile technology TL-66/TL-64/TL-60/TL-56/TL-52 (1 MB L2 cache, 2.3/ 2.2/2.0/1.8/1.6 GHz, 1600 MHz HyperTransport™ Bus) (for selected models)  Mobile AMD Sempron™ 3400+ (512 KB L2 cache, 1.8 GHz, 1600 MHz HyperTransport™ Bus) / 3500+  (512 KB L2 cache, 1.8 GHz, 1600 MHz HyperTransport™ Bus) / 3600+ (256 KB L2 cache, 2.0 GHz,  1600 MHz HyperTransport™
                    
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                        models)  Optical drive options:  DVD-Super Multi double-layer drive   DVD/CD-RW combo drive ™ ®  5-in-1 card reader supporting Secure Digital (SD), MultiMediaCard (MMC), Memory Stick (MS),  ™ ™ Memory Stick PRO (MS PRO), xD-Picture Card (xD)  Input devices  105-/106-key keyboard with inverted "T" cursor layout, 2.5 mm (minimum) key travel  Seamless touchpad pointing device with Acer Bio-Protection fingerprint reader supporting Acer  FingerNav 4-way control function (manufacturing option)  Seamle
                    
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                         Headphones/speaker/line-out jack  Line-in jack  Microphone jack  Ethernet (RJ-45) port  Modem (RJ-11) port  DC-in jack for AC adaptor Environment  Temperature:  Operating: 5 °C to 35 °C  Non-operating: -20 °C to 65 °C  Humidity (non-condensing):  Operating: 20% to 80%  Non-operating: 20% to 80% Chapter 1 3                                                                                                                                                                                                
                    
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                        Pomona/Texcoco Block Diagram DDR2 SODIMM DDR II 533/667/800 AMD DIMM1 G792 9 41 K8. Rev G DDR2 SODIMM DDR II 533/667/800 S11 g Socket DIMM2 4/5/6/7 9 CLK GEN. 14.318MHz ICS 9LPRS502 Power Switch HyperTransport 16x16 P2231NFC1 (RTM875T-605) 3 29 S-Vedio New card PCI-1 E x 15 29 ATI CRT Mini Card 15 PCI-1 E x 802.11abgn / / / 29 LCD RS690M RJ45 XFORM 14 LAN 23 PCI-1 E x 23 Marvell 88E8071 23 DVI PCIE x16 28 10/11/12/13 ATI MXM Card 28 25MHz PCI-4 E x INT. MIC Array Line In 24.576MHz PCMCIA Codec P
                    
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                        Your Acer Notebook tour After knowing your computer features, let us show you around your new TravelMate computer. Front View Icon Item Description 1 Acer CrystalEye 0.3 megapixel web camera for video  communication. 2 Microphone Internal microphone for sound recording. 3 Display screen Also called Liquid-Crystal Display (LCD),  displays computer output. 4 Easy-launch Buttons for launching frequently used programs.  buttons 5 Palmrest Comfortable support area for your hands when  you use the com
                    
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                        Icon Item Description 6 Click buttons (left, The left and right buttons function like the left  center* and right) and right mouse buttons. *The center button serves as Acer BioProtect  fingerprint reader supporting Acer FingerNav 4- way control function (manufacturing option) or a  4-way scroll button (manufacturing option). 7 Status indicators Light-Emitting Diodes (LEDs) that light up to  show the status of the computer's functions and  components.  8 Touchpad Touch-sensitive pointing device 
                    
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                        Icon Item Description 9 Wireless Enable/disable the wireless function. Indicates the  communication status of wireless LAN communication  switch (manufacturing option). Left View # Icon Item Description 1 Kensington lock slot Connects to a Kensington-compatible  computer security lock. 2 Ethernet (RJ-45) Connects to an Ethernet 10/100/1000-based  port network. 3 DVI-D DVI-D port Supports digital video connections. 4 External display Connects to a display device (e.g., external  (VGA) port monito
                    
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                        Right View Icon Item Description 1 Optical drive Internal optical drive; accepts CDs or DVDs 2 Optical disk Lights up when the optical drive is active. access indicator 3 Optical drive eject Ejects the optical disk from the drive. button 4 Emergency eject Ejects the optical drive tray when the computer is  hole turned off. Rear Panel # Icon Item Description 1 Three USB 2.0 Connect to USB 2.0 devices (e.g., USB  ports mouse, USB camera). 2 Modem (RJ-11) Connects to a phone line. port 3 DC-in jack
                    
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                        Bottom Panel Icon Item Description 1 Second Hard disk Houses the computer’s optional second hard  bay disk. (Secured with a screw). 2 Memory Houses the computer's main memory. compartment 3 Battery lock Locks the battery in position. 4 Battery release Releases the battery to remove the battery pack. latch 5 Battery bay Houses the computer's battery pack. 6 Ventilation slots Enable the computer to stay cool, even after  prolonged use. 7 Hard disk bay Houses the computer’s hard disk (secured with 
                    
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                        The front panel indicators are visible even when the computer cover is closed. Icon Function Description Power Indicates the computer's power  status. Battery Indicates the computer's battery  status. Bluetooth Indicates the status of Bluetooth  communication. Wireless LAN Indicates the status of wireless LAN  communication. HDD Indicates when the hard disk drive is  active. Num Lock Lights up when Num Lock is  activated. Caps Lock Lights up when Caps Lock is  activated. NOTE: 1. Charging: The l