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Acer Aspire 4820T
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 this service guides. Date Chapter Updates II
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Copyright Copyright © 2010 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 rep
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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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System Specifications 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Your Acer Notebook tour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Removing the USB Board 64 Removing the 3G Module 66 Removing the Bluetooth Module 67 Removing the LCD Module 68 Removing the Mainboard 70 Removing the Thermal Module 72 Removing the CPU 73 Removing the RTC Battery 74 Removing the WiFi Antenna Cable 74 Removing the Right Speaker 75 Removing the DC-In Cable 76 LCD Module Disassembly Process 77 LCD Module Disassembly Flowchart 77 Removing the LCD Bezel 78 Removing the Camera Module 79 Removing the LCD Panel 80 Removing the FPC Cable 81 Removing th
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No Display Issue 115 Random Loss of BIOS Settings 116 LCD Failure 117 Built-In Keyboard Failure 117 TouchPad Failure 118 Internal Speaker Failure 118 HDD Not Operating Correctly 120 ODD Failure 121 Wireless Function Failure 124 Thermal Unit Failure 124 External Mouse Failure 125 Other Failures 125 Intermittent Problems 126 Undetermined Problems 126 Post Codes 127 Jumper and Connector Locations 133 Top View 133 Bottom View 134 Clearing Password Check and BIOS Recovery 135 Clearing Password Check
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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 Removing the Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 Removing the Mainboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61 Removing the Thermal Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 Removing the CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Removing the RTC Battery . . . . . . . . . . .
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Table of Contents Built-In Keyboard Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107 TouchPad Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108 Internal Speaker Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108 HDD Not Operating Correctly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110 ODD Failure . . . . . . . . . . .
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Table of Contents 8
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Chapter 1 System Specifications Features Below is a brief summary of the computer’s many features: NOTE: Items denoted with an (*) are only available for selected models. Operating System • Genuine Windows® 7 Home Premium 64-bit* • Genuine Windows® 7 Home Basic 64-bit* Platform • Intel® Core™ i7-620M processor (4 MB L3 cache, 2.66 GHz with Turbo Boost up to 3.33 GHz, DDR3 1066 MHz, 35 W), supporting Intel® 64 architecture, Intel® Smart Cache • Intel® Core™ i5-430M/i5-520M/i5-540M processor (3 M
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• WMV9 (VC-1) and H.264 (AVC) decoding • HDMI™ (High-Definition Multimedia Interface) 1.3 with HDCP (High-bandwidth Digital Content Protection) support • 1.65Gbps resolution • 1920*180p Mini Card • 2* Mini PCIE card • 2 Mini PCIE card slot [1 for 3G (full size) and 1 for WLAN(half size)] Audio • Optimized 3rd Generation Dolby® Home Theater® audio enhancement, featuring Dolby® Digital Live, Dolby® Pro Logic® IIx, Dolby® Headphone, Dolby® Natural Bass, Dolby® Sound Space Expander, Dolby® Invers
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Privacy control • BIOS user, supervisor, HDD passwords • Kensington lock slot Dimensions and weight • 342 (W) x 245 (D) x 19.4/25.4 (H) mm (13.46 x 9.64 x 0.76/0.99 inches) • 2.2 kg (4.85 lbs.) with 6-cell battery Power subsystem • ACPI 3.0 CPU power management standard: supports Standby and Hibernation power-saving modes • Acer PowerSmart 3-pin 65 W AC adapter • 95 (W) x 50 (D) x 25.4 (H) mm (3.74 x 1.96 x 1 inches) • 216 g (0.47 lbs)12 with 180 cm DC cable • 66.6 W 6000 mAh 6-cell Li-ion st
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® ® • Adobe Flash Player 10 ® ® • Adobe Reader 9.1 ™ • eSobi ™ • Google Setup ™ • Google Toolbar ® • Microsoft Office Personal 2007 (Service Pack 2) (Japan only, subject to customer request) ® • Microsoft Office Trial (Service Pack 2) ® • Microsoft Works SE 9 ® • Microsoft Works 9 ® • Microsoft Works 8.5 ™ • Norton Online Backup • Security ® • McAfee Internet Security Suite 2009 Trial • McAfee® Virus Definitions • MyWinLocker • Multimedia· • Acer Arcade™ Deluxe· • NTI Media Maker™ • Gaming· •
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• External USB floppy disk drive • External USB 56K modem Warranty • One-year International Travellers Warranty (ITW) 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 5
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System Block Diagram GPU CORE PWR CHARGER 3/5V SYS PWR DISCHARGER CPU CORE PWR CLOCK GENERATOR Fan Driver intel (PWM Type) +1.0V/+1.8V CPU VTT CPU VGFX_AXG VTT 1.05V CPU Arrandale (SG) Dual Channel DDR III XDP Conn. 800/ 1066 MHz SO-DIMM 0 THERMAL DDR3 PWR SO-DIMM 1 PROTECTION rPGA 989 (37.5mm X 37.5mm) PCI-E PCIE CRT X16 CRT ATI GPU LVDS FDI DMI LVDS_CRT Madison/Park LP/PRO 1GB INT_CRT Switchable HDD (SATA) (16 x 64Mb x 8pcs) INT_LVDS LVDS FDI interface X4 DMI interface X'TA
