Maintenance & Service Guide Compaq Deskpro EX Series of Personal Computers Desktop Models Maintenance & Service Guide Compaq Deskpro EX Series of Personal Computers Desktop Models Notice © 2000 Compaq Computer Corporation. Except for use in connection with the accompanying Compaq product, no part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation. COMPAQ, the Compaq logo, and Deskpro Registered in U.S. Patent and Trademark Office are trademarks of Compaq Information Technologies Group, L.P. Microsoft, Windows, Windows NT, and other names of Microsoft products referenced herein are trademarks or registered trademarks of Microsoft Corporation. Intel and Pentium are registered trademarks of Intel Corporation. Celeron and MMX are trademarks of Intel Corporation. All other product names mentioned herein may be trademarks or registered trademarks of their respective companies. Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK ARISING OUT OF THE USE OF THIS INFORMATION REMAINS WITH RECIPIENT. IN NO EVENT SHALL COMPAQ BE LIABLE FOR ANY DIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL, PUNITIVE OR OTHER DAMAGES WHATSOEVER (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION OR LOSS OF BUSINESS INFORMATION), EVEN IF COMPAQ HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND WHETHER IN AN ACTION OF CONTRACT OR TORT, INCLUDING NEGLIGENCE. The limited warranties for Compaq products are exclusively set forth in the documentation accompanying such products. Nothing herein should be construed as constituting a further or additional warranty. The following words and symbols mark special messages throughout this guide: WARNING: Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life. CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information. Maintenance & Service Guide Compaq Deskpro EX Series of Personal Computers Desktop Models First Edition (September 2000) Part Number 201855-001 Spare Parts Number 215877-001 Compaq Computer Corporation CONTENTS preface About This Guide Symbols and Conventions.........................................................................................................vii Technician Notes.......................................................................................................................vii Locating Additional Information .............................................................................................viii chapter 1 Product Description 1.1 Product Features ............................................................................................................. 1-2 1.1.1 Front Panel Controls and LEDs ......................................................................... 1-2 1.1.2 Rear Panel Connectors ....................................................................................... 1-3 1.1.3 Drive Positions ................................................................................................... 1-4 1.2 Serial Number Location.................................................................................................. 1-5 chapter 2 Spare Parts 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 System Unit .................................................................................................................... 2-1 Mass Storage Devices..................................................................................................... 2-2 Cables ............................................................................................................................. 2-2 Standard, Memory, and Expansion Boards .................................................................... 2-3 Keyboards....................................................................................................................... 2-4 Miscellaneous Screw Kit ................................................................................................ 2-4 Miscellaneous Parts ........................................................................................................ 2-5 Shipping Boxes............................................................................................................... 2-5 Documentation and Software ......................................................................................... 2-5 chapter 3 Removal and Replacement Preliminaries 3.1 Electrostatic Discharge Information ............................................................................... 3-1 3.1.1 Generating Static................................................................................................ 3-1 3.1.2 Preventing Electrostatic Damage to Equipment................................................. 3-2 3.1.3 Personal Grounding Methods and Equipment ................................................... 3-2 3.1.4 Grounding Workstations .................................................................................... 3-2 3.1.5 Recommended Materials and Equipment........................................................... 3-3 3.2 Routine Care ................................................................................................................... 3-3 3.2.1 General Cleaning Safety Precautions ................................................................. 3-3 3.2.2 Cleaning the Computer Case.............................................................................. 3-4 3.2.3 Cleaning the Keyboard....................................................................................... 3-4 3.2.4 Cleaning the Monitor ......................................................................................... 3-4 3.2.5 Cleaning the Mouse............................................................................................ 3-5 3.3 Service Considerations ................................................................................................... 3-5 3.3.1 Power Supply Fan .............................................................................................. 3-5 3.3.2 Tools and Software Requirements ..................................................................... 3-5 3.3.3 Screws ................................................................................................................ 3-5 3.3.4 Cables and Connectors ....................................................................................... 3-6 Contents iii 3.3.5 3.3.6 Hard Drives ........................................................................................................ 3-6 Lithium Coin Cell Battery.................................................................................. 3-6 chapter 4 Removal and Replacement Procedures 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Disassembly Sequence Chart.......................................................................................... 4-1 Disassembly Preparation................................................................................................. 4-2 Computer Cover ............................................................................................................. 4-3 Front Bezel ..................................................................................................................... 4-4 Bezel Blank..................................................................................................................... 4-5 Power Switch/LED Cable............................................................................................... 4-6 Mass Storage Devices..................................................................................................... 4-7 Using the Cable-Select Feature with Ultra ATA Devices ........................................... 4-7 4.7.1 Removing the Internal, Side-Mounted, 3.5-Inch Hard Drive............................. 4-8 4.7.2 Removing an External 5.25-Inch Drive from Right Drive Bay ....................... 4-10 4.7.3 Removing the Diskette Drive........................................................................... 4-11 4.7.4 Removing an External 5.25-Inch Drive from the Left Drive Bay.................... 4-12 System Memory............................................................................................................ 4-13 DIMMs ......................................................................................................................... 4-13 Memory Module Installation ........................................................................................ 4-13 Expansion Boards ......................................................................................................... 4-15 4.9.1 Expansion Slot Location .................................................................................. 4-15 4.9.2 Removing or Installing a PCI Expansion Board .............................................. 4-15 Graphics Cards.............................................................................................................. 4-17 4.10.1 Graphics Performance Accelerator (GPA)/AGP Inline Memory Module (AIMM) Card with a Type I Retention Mechanism .................................... 4-17 Removing a GPA/AIMM Card ................................................................................. 4-17 Installing a GPA/AIMM Card................................................................................... 4-18 4.10.2 AGP Card with a Type I Retention Mechanism............................................... 4-20 Removing an AGP Card............................................................................................ 4-20 4.10.3 GPA/AIMM Card with a Type 2 Retention Mechanism.................................. 4-21 Removing a GPA/AIMM Card ................................................................................. 4-21 4.10.4 AGP Card with a Type 2 Retention Mechanism .............................................. 4-22 Removing an AGP Card............................................................................................ 4-22 4.10.5 Standard AGP Expansion Card ........................................................................ 4-23 Removing an AGP Card............................................................................................ 4-23 Processor....................................................................................................................... 4-24 System Board................................................................................................................ 4-26 Battery .......................................................................................................................... 4-27 Power Supply................................................................................................................ 4-28 Chassis Fan ................................................................................................................... 4-29 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 chapter 5 Connectors & Jumpers 5.1 System Board.................................................................................................................. 5-1 5.1.1 Connectors and Jumpers .................................................................................... 5-1 5.1.2 Clearing CMOS.................................................................................................. 5-2 5.1.3 Disabling or Clearing the Power-On and Setup Passwords ............................... 5-3 5.2 Hard Drive Jumper Settings............................................................................................ 5-4 5.2.1 Seagate, Quantum, and Western Digital ............................................................ 5-4 5.2.2 Maxtor................................................................................................................ 5-5 iv Contents chapter 6 Specifications 6.1 Specifications.................................................................................................................. 6-1 6.1.1 System ................................................................................................................ 6-1 6.1.2 System Interrupts ............................................................................................... 6-2 6.1.3 System DMA...................................................................................................... 6-2 6.1.4 ICH Fixed I/O Registers..................................................................................... 6-3 6.1.5 System Memory Map ......................................................................................... 6-5 ...