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Compaq Deskpro EN Series Maintenance & Service Manual
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Compaq Deskpro EN Series Maintenance & Service Manual

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  • Page 1 Maintenance & Service Guide Compaq Deskpro EN Series of Personal Computers...
  • Page 2 © 1998 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq and Deskpro are registered in the U. S. Patent and Trademark Office. PREMIER • SOUND is a trademark of Compaq Computer Corporation. Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.

  • Page 4: Table Of Contents

    Technician Notes ........................xii System Serial Number .......................xii Locating Additional Information....................xii chapter 1 Product Description 1.1 Compaq Deskpro EN Series of Personal Computer Models ..........1-2 1.1.1 Desktop Models ......................1-2 1.1.2 Desktop CCP Models....................1-3 1.1.3 Minitower Models......................1-3 1.2 Features..........................1-4 1.3 System Design ........................1-5 1.3.1 Desktop Design Overview ..................1-5...
  • Page 5 2.5 Computer Diagnostics ......................2-8 2.5.1 Create a Diagnostics Diskette ..................2-8 Deskpro EP Series, Deskpro EN Series, and Deskpro EN Series, Small Form Factor.2-8 Deskpro EN Series ......................2-8 2.5.2 Computer Checkup (TEST) ..................2-8 2.5.3 View System Information (INSPECT) ..............2-9 Using Computer Checkup (TEST) or View System Information (INSPECT) .....2-9 2.5.4 Enhanced Compaq Insight Personal Edition (Compaq Diagnostics for Windows)2-10...
  • Page 6 2.11.8 Compaq Integrated Software .................2-30 2.11.9 Universal Driver Manager ..................2-30 2.12 Building Blocks and Partners ..................2-31 2.12.1 Desktop Management Interface (DMI)..............2-31 2.12.2 Compaq Insight Manager and the Insight Management Agents......2-31 2.12.3 Compaq Management Solutions Partners Program ..........2-32 chapter 3 Spare Parts 3.1 System Unit ........................3-2...
  • Page 7 chapter 5 Desktop Removal and Replacement 5.1 Serial Number Location......................5-1 5.2 Disassembly Sequence Chart....................5-2 5.3 Feet Installation ........................5-3 5.4 Preparation for Disassembly....................5-4 5.5 Cable Lock Installation.......................5-5 5.6 System Unit Cover Removal ....................5-6 5.6.1 Quick Release Cover Latch Removal ................5-7 5.6.2 Power Button Removal....................5-8 5.6.3 Bezel Blank Removal ....................5-9 5.7 Cover Latch Retainer Removal ..................5-10 5.8 Drive Power Cable Positions....................5-11...
  • Page 8 6.16.1 Smart Cover Lock Solenoid Removal ..............6-34 6.16.2 Power Switch Cable Assembly Removal ..............6-35 chapter 7 Service Notes ............................7-1 chapter 8 Specifications 8.1 System ..........................8-1 8.1.1 System Specifications ....................8-1 8.1.2 System Interrupts .......................8-2 Compaq Deskpro EN Series of Personal Computers...
  • Page 9 8.1.3 System DMA ......................8-2 8.1.4 System I/O .........................8-3 8.1.5 System Memory Map....................8-4 8.2 Drives ..........................8-4 8.2.1 Diskette Drive ......................8-4 8.2.2 Ultra ATA Hard Drives .....................8-5 8.2.3 Wide UltraSCSI Hard Drives..................8-6 8.2.4 24X Max CD-ROM Drive ..................8-7 8.2.5 32X Max CD-ROM Drive ..................8-8 8.3 Keyboard ..........................8-9 8.4 Mouse ..........................8-9 8.5 Supported Graphics Resolutions ..................8-10...
  • Page 10 Memory Problems ........................F-9 SCSI Problems..........................F-9 Network Problems ........................F-10 Resolving Audio Hardware Conflicts..................F-12 Troubleshooting Using Compaq Intelligent Manageability Features........F-12 appendix G SCSI Guidelines Guidelines for Installing Optional SCSI Devices ..............G-1 Termination ..........................G-2 Index ............................... Compaq Deskpro EN Series of Personal Computers...

  • Page 11: About This Guide

    UIDE This Maintenance and Service Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq Deskpro EN Series of Personal Computers. Only authorized technicians trained by Compaq should attempt to repair this equipment.

  • Page 12: Technician Notes

    Technician Notes WARNING: Only authorized technicians trained by Compaq should attempt to repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board.

  • Page 13: Product Description

    RODUCT ESCRIPTION This chapter describes the model offerings and features of the Compaq Deskpro EN Series of Personal Computers. Compaq Deskpro EN Series of Personal Computers Compaq EN Series of Personal Computers...

  • Page 14: Compaq Deskpro En Series Of Personal Computer Models

    Compaq Deskpro EN Series of Personal Computer Models The Compaq Deskpro EN Series of Personal Computers is available in configurations described in the following sections. 1.1.1 Desktop Models Config. Processor/ Hard Drive Network Code Bus Speed Drive Type Interface Graphics*...

  • Page 15: Desktop Ccp Models

    All models have embedded 16-bit full duplex audio on the system board and a maximum expandable memory of 384 MB. Some models may not be available in all geographic locations. *AGP = 4-MB memory installed. AGP 2X = 4-MB memory installed with 4-MB memory upgrade capability. Compaq EN Series of Personal Computers...

  • Page 16: Features

    No L2 cache on Celeron models Diamond Viper NVIDIA RIVA 128 3D multimedia graphics Flash ROM BIOS Network interface Compaq Fast Ethernet NIC 10/100 TX PCI INTEL WOL standard (some models available without NIC) Memory 66 MHz without ECC I/O ports non-parity, Ultra ATA models...

  • Page 17: System Design

    1.3.1 Desktop Design Overview The desktop models of the Compaq Deskpro EN Series of Personal Computers use a highly serviceable chassis to house the slide-out system board, expansion board cage, power supply, and mass storage devices. The expansion board cage houses the expansion boards.

  • Page 18: Minitower Design Overview

    1.3.2 Minitower Design Overview The minitower models of the Compaq Deskpro EN Series of Personal Computers use a highly serviceable chassis to house the slide-out system board, expansion board cage, power supply, and mass storage devices. The expansion board cage houses the expansion boards.

  • Page 19: Preloaded Software

    A yearly subscription that delivers up to 12 monthly CD-ROMs provides continuous access to the latest developments. When calling Compaq to place an order, be sure to have the serial number of the computer available. The location of the serial number is shown in Chapters 5 and 6.

  • Page 20: Desktop Computer Features

    Desktop Computer Features The Compaq Deskpro EN Series of Personal Computers ships with a mouse and keyboard. A Compaq color monitor or other compatible monitor, which is also required to operate the computer, does not ship with the computer. 1.5.1 Front Panel Controls and LEDs Diskette Drive Activity Light illuminates when the diskette drive is reading or writing.

  • Page 21: Drive Positions

    To verify the type, size, and capacity of the mass storage devices installed in the computer, run the View System Information (INSPECT) utility available at computer startup. Refer to Chapter 2, "Intelligent Manageability," for more information. Compaq EN Series of Personal Computers...

  • Page 22: Rear Panel Connectors

    1.5.3 Rear Panel Connectors Power Cord Connection Smart Cover Lock Microphone Connector Ethernet RJ-45 Connector (some models available without a NIC) Line-In Audio Connector Wide UltraSCSI Connector (select models) Mouse Connector Monitor Connector Voltage Select Switch (115V or 230V to match geographical requirements) Universal Serial Bus (USB) Connectors Headphone Connector <...

  • Page 23: Minitower Computer Features

    Minitower Computer Features The Compaq Deskpro EN Series of Personal Computers ships with a mouse and keyboard. A Compaq color monitor or other compatible monitor, which is also required to operate the computer, does not ship with the computer. 1.6.1 Front Panel Controls and LEDs Diskette Eject Button.

  • Page 24: Drive Positions

    1.6.2 Drive Positions Standard 3.5-inch 1.44-MB diskette drive 5.25-inch CD-ROM drive (half-height) (standard on some models) Optional 5.25-inch drive (half-height) Optional 5.25-inch drive (half-height) Standard 3.5-inch internal hard drive To verify the type, size, and capacity of the mass storage devices installed in the computer, run the View System Information (INSPECT) utility available at computer startup.

  • Page 25: Rear Panel Connectors

    Serial Connectors Smart Cover Lock Power Cord Connector Microphone Connector Ethernet RJ-45 Connector (some models available without a NIC) < Wide UltraSCSI Connector (select models) Line-In Audio Connector > Mouse Connector Monitor Connector Compaq EN Series of Personal Computers 1-13...

  • Page 26: Enhanced Keyboard

    Enhanced Keyboard Ref. Function Ctrl Used in combination with another key, its effect depends on the software application you are using. Windows Logo Keys Opens the Windows Start menu. Used in combination with another key, its effect depends on the software application you are using. Used in combination with another key, its effect depends on the software application you are using.

  • Page 27: Select Options

    AGP graphics only ECC) Hard Drive, 3.2-GB Ultra ATA Network Compaq Fast Ethernet 10/100 TX PCI Intel 6.4-GB Ultra ATA 8.4-GB Ultra ATA 3COM Fast Etherlink XL 10/100 TX PCI (3C905B-TX) with Remote Wakeup IBM PCI WOL Token Ring Adapter...

  • Page 28: Software Reference

    The Windows NT installation that is completed when the computer is first turned on creates an I386 directory. This directory and its subdirectories provide the Compaq-specific integration of Windows NT for the computer model. This image, license permitting, can be used as a distribution share point to deploy Windows NT over a network connection.

  • Page 29: Installing Or Upgrading Device Drivers

    2. Press the F6 key when the message “Setup is inspecting your computer’s hardware configuration…” appears on your screen. 3. When asked if you want to specify a storage device, press S and select the Compaq ATAPI/IDE/LS-120 Controller from the list.

  • Page 30: Registering The Computer

    The Microsoft Windows 95, Windows 98, or Windows NT Workstation operating system is preinstalled on the computer and will be configured automatically the first time the computer is turned on. The following Compaq software will also be installed at that time on selected models: „ Computer Setup Utilities and diagnostic features „...

  • Page 31: Compaq Computer Setup Utilities And Diagnostic Features

    Compaq Computer Setup Utilities and Diagnostic Features Compaq Computer Setup Utilities and diagnostic features provide information needed about the computer system when contacting Compaq Customer Support. These tools can also be used to: „ Change factory default settings, and to set or change the system configuration, which may be necessary when you add or remove hardware.

  • Page 32: Using Computer Setup Utilities

    Ignore Changes and Exit. If you have already applied changes you now want to eliminate, select Set Defaults and Exit. This option will restore the original system defaults. Compaq Deskpro EN Series of Personal Computers...

  • Page 33: Computer Setup Menu

    2.4.2 Computer Setup Menu Heading Option Description File System Information Lists product name, processor type/speed/stepping, CPU serial number, system ROM date, system board revision, installed memory size, and asset tracking number. Set Time and Date Allows you to set system time and date. Save to Floppy Saves system configuration to a blank 1.44-MB diskette.
  • Page 34 Appears only if there are multiple PCI video adapters in the system. Allows users to specify which VGA controller will be the “boot” or primary VGA controller. * These options should be used by advanced users only. Compaq Deskpro EN Series of Personal Computers...

  • Page 35: Computer Diagnostics

    Computer Diagnostics Compaq strongly recommends that you create a diagnostics diskette as soon as you begin to use the computer. This diskette will play an important role in the restoration process if you ever experience a major system failure. It will also allow you to run the Computer Checkup (TEST) or View System Information (INSPECT) diagnostic programs.

  • Page 36: View System Information (Inspect)

    View information about the system once it has been configured. „ Save, print, or display the information generated by INSPECT. You should run INSPECT and have the printed report available before placing a call to the Compaq Customer Support Center. „...

  • Page 37: Enhanced Compaq Insight Personal Edition (Compaq Diagnostics For Windows)2-10

    „ Operating system „ Windows version Depending on the version, Compaq Insight Personal Edition may include diagnostic tests to determine if all the devices installed on the computer are recognized by the system and are functioning properly. 2-10 Software Reference...

  • Page 38: Using Compaq Insight Personal Edition

    By following the recommended actions, you may be able to solve some problems yourself. 7. Click Print or Save the error information in case you need to contact your Compaq authorized dealer, reseller, or service provider for assistance. 8. To exit Compaq Insight Personal Edition, click File, then click Exit.

  • Page 39: Protecting Your Software

    You can order a set of backup diskettes from Compaq at nominal cost for all of the software preinstalled on the computer, or you can make a set. Refer to the operating system or backup utility documentation for instructions on making backup copies of data files.

  • Page 40: Intelligent Manageability

    Intelligent Manageability Compaq Intelligent Manageability is the best, most comprehensive set of desktop management solutions in the industry. Providing easy control and management of the desktop and portable PC, Intelligent Manageability delivers significant financial and intangible returns when used to manage distributed PC environments.

  • Page 41: Initial Configuration And Deployment

    „ Installing application software or drivers. To initiate Remote System Installation, press F12 when the F12=Network Service Boot message appears in the lower-right corner of the Compaq logo screen. Follow the instructions on the screen to continue the process. 2-14...

  • Page 42: Asset Tracking And Security

    Asset Tracking and Security Compaq AssetControl features incorporated into the computer provide key asset tracking data that can be managed using Management Solutions Partners products. Seamless, automatic integration between AssetControl features and Solutions Partners products enables you to choose the management tool that is best suited to your environment and to leverage your investment in existing tools.

  • Page 43: Password Security

    For more information about Computer Setup, refer to the “Compaq Computer Setup Utilities” section of this chapter. In some cases switches may need to be set. For more information about these switches, refer to the “Connectors, Jumpers, and Switches”...

  • Page 44: Establishing A Power-On Password Using Computer Setup

    Type carefully; for security reasons, the characters you type do not appear on the screen. The new password takes effect the next time you turn on the computer. Compaq Deskpro EN Series of Personal Computers 2-17...

  • Page 45: Deleting A Power-On Or Setup Password

    Deleting a Power-On or Setup Password 1. Turn on or restart the computer. If you are in Windows, click Start Æ Shut Down Æ Restart the Computer. To delete the setup password, run Computer Setup. 2. When the key icon appears, type your current password followed by a slash (/) or alternate delimiter character as shown: current password/ Refer to the “National Keyboard Delimiter Characters”...

  • Page 46: Smart Cover Sensor

    3. Select Security, then select Smart Cover and follow the instructions on the screen. 4. Before exiting, click File Æ Save Changes and Exit. Compaq Deskpro EN Series of Personal Computers 2-19...

  • Page 47: Unlocking The Smart Cover Lock

    „ PC component failure (e.g., processor or power supply) „ Forgotten password CAUTION: The Smart Cover FailSafe Key is a specialized tool available from Compaq. Be prepared; order this key before you need one. 2.9.4 QuickLock/QuickBlank QuickLock/QuickBlank disables the keyboard and mouse interface, and can blank the screen, without exiting open applications.

  • Page 48: Disabling The Keyboard And Mouse Interface

    A physical security device for your computer may also be available, through the cable lock provision. See your Guide to Features & Upgrades for more information on using and installing the cable lock provision. Compaq Deskpro EN Series of Personal Computers 2-21...

  • Page 49: Fault Notification And Recovery

    When a fault occurs, the computer displays a Local Alert message containing a description of the fault and any recommended actions. You can then view current system health by using Compaq Insight Personal Edition. If the computer is connected to a network managed by Compaq Insight Manager or other SNMP-based management products from Compaq Management Solutions Partners, the computer also sends a fault notice to the network management application.

  • Page 50: Proactive Backup

    The thermal sensor is a hardware and software feature that tracks the internal temperature of the computer. This feature displays a warning message when the normal range is exceeded, which gives you time to take action before internal components are damaged or data is lost. Compaq Deskpro EN Series of Personal Computers 2-23...

  • Page 51: Software Updating And Management

    Solutions Partners products, which can also be used to distribute new applications, device drivers, and other system software. The Compaq Support Software CD and Web site includes updated ROM images and device drivers which can be distributed to client PCs using these software tools.

  • Page 52: Failsafe Boot Block Rom

    4. Enter the setup password. If the system successfully starts from the diskette and successfully reprograms the ROM, then the three keyboard lights will turn on. A “rising tone” series of beeps also signals successful completion. Compaq Deskpro EN Series of Personal Computers 2-25...
  • Page 53 Insert a valid ROMPaq diskette, turn the power off, then turn the power on. ROM upgrade failed. Try another ROMPaq diskette. If the light remains turned on, contact Compaq customer support. ROM upgrade successfully completed. Turn power off and back on to resume normal system operation. Keyboard Lights...

  • Page 54: Remote Security Management

    2.11.3 Remote Wakeup and Remote Shutdown If the computer has an optional network card installed, it may support the Compaq Remote Wakeup and Remote Shutdown functions. These functions allow a system administrator to power on and power off a client computer from a remote location, supported by PC LAN management tools.

  • Page 55: Replicating Original Setup

    2.11.4 Replicating Original Setup This procedure gives an administrator the ability to easily copy one setup configuration to other computers of the same model. This allows for faster, more consistent configuration of multiple computers. To replicate your setup: 1. Access the Computer Setup Utilities menu. 2.

  • Page 56: Enhanced Support Software Cd And World Wide Web Site

    (Compaq part number 183426-xxx). The annual subscription ensures your continuous access to the latest developments. If you call Compaq to place an order, be sure to have the serial number of the computer available. This number is necessary for all purchases.

  • Page 57: Compaq Integrated Software

    Compaq Integrated Software Additional support software is available on the Support Software CD for Compaq Desktop, Portable, and Workstation Products and may be downloaded from the Compaq World Wide Web site at www.compaq.com. This software supplements the installation of off-the-shelf Microsoft operating systems and lets you quickly and easily install the correct device drivers and other software required for top performance.

  • Page 58: Building Blocks And Partners

    The Desktop Management Task Force (DMTF) is an industry body created in 1992 with the goal of standardizing systems manageability. DMTF established the Desktop Management Interface (DMI) framework to standardize access to PC configuration data. Compaq, as a Steering Committee and Technical Committee member of the DMTF, delivers hardware and software instrumentation that supports the DMI standard.

  • Page 59: Compaq Management Solutions Partners Program

    Compaq Family of Personal Computers information from a central location. The partnership ensures that the benefits of Intelligent Manageability are accessible through a broad range of vendors. This allows customers to use their tools of choice to remotely manage their Compaq computers more confidently and cost effectively.

  • Page 60: Spare Parts

    PARE ARTS This chapter provides an illustrated parts breakdown and a reference for spare parts for the Compaq Deskpro EN Series of Personal Computers. Compaq Deskpro EN Series of Personal Computers Compaq Deskpro EN Series of Personal Computers...

  • Page 61: System Unit

    System Unit 3.1.1 Desktop System Unit - Desktop Spare Parts...
  • Page 62 3. Tilt drive cage assembly with hinge and drivelocks 179178-001 4. Expansion board cage with slot covers and screws 179177-001 5. Chassis (basepan) assembly (repair/exchange only) 179176-001 6. Smart cover lock solenoid 179189-001 7. Speaker assembly with enclosure 179188-001 Compaq Deskpro EN Series of Personal Computers...

  • Page 63: Minitower

    3.1.2 Minitower System Unit - Minitower Spare Parts...
  • Page 64 2. Expansion board cage with slot covers and screws 179366-001 3. Smart cover lock solenoid 179189-001 4. Speaker assembly 179188-001 5. Access panel 179367-001 6. Chassis (basepan) assembly (repair/exchange only) 179365-001 7. Front bezel assembly 179370-001 8. Computer base 179369-001 Compaq Deskpro EN Series of Personal Computers...

  • Page 65: Mass Storage Devices

    Mass Storage Devices Mass Storage Devices Spare Parts...
  • Page 66 4. 6.4-GB Ultra ATA hard drive* 166973-001 5. 8.4-GB Ultra ATA hard drive 166981-001 6. 4.3-GB Wide UltraSCSI hard drive with guide screws* 179287-001 7. 9.1-GB Wide UltraSCSI hard drive with guide screws* 179288-001 *Not shown. Compaq Deskpro EN Series of Personal Computers...

  • Page 67: Cables

    Cables Cables Spare Parts...
  • Page 68 Brazil)* 6. Video cable for P1610 Monitor* 305717-001 7. SCSI 3-device cable with terminator 199616-013 179341-001 8. SCSI LED cable 225537-001 247485-001 NOTE: Item part numbers are for reference purposes only. *Not shown. Compaq Deskpro EN Series of Personal Computers...

  • Page 69: Standard And Optional Boards

    Standard and Optional Boards Standard and Optional Boards 3-10 Spare Parts...
  • Page 70 11. Processor, PII, 350/100 w/heatsink* 278309-001 179172-001 11. Processor, PII, 400/100 w/heatsink* 278309-002 179326-001 12. System board with mounting tray 178919-001 NOTE: Item part numbers are for reference purposes only. *Not shown. continued Compaq Deskpro EN Series of Personal Computers 3-11...
  • Page 71 Standard and Optional Boards 3-12 Spare Parts...
  • Page 72 Description Number Number Tier 13. Wide UltraSCSI PCI controller 334136-001 179261-001 14. Compaq Fast Ethernet NIC10/100 TX PCI Intel 323557-001 323556-001 14. Compaq 10/100 TX PCI Intel WOL UTP 323550-001 323553-001 w/Remote Wakeup* 15. IBM PCI Token Ring Adapter 4/16 WOL*...

  • Page 73: Keyboards

    Keyboards Keyboard Table 3-6 Keyboards Spare Part Warranty Description Number Tier Arabic* 269513-171 Belgian* 269513-181 Brazilian* 269513-201 BHCSY (Bosnia-Herzegovina, Croatia, Slovenia, and Yugoslavia)* 269513-B41 Czech* 269513-221 Danish* 269513-081 Finnish* 269513-351 French* 269513-051 French Canadian* 269513-121 German* 269513-041 Greek* 269513-151 Hanguel* (Korean) 269513-AD1 Hebrew* 269513-BB6...
  • Page 74 Table 3-6 continued Spare Part Warranty Description Number Tier Polish* 269513-241 Portuguese* 269513-131 Russian* 269513-251 Slovakian* 269513-231 Spanish* 269513-071 Swedish* 269513-101 Swiss* 269513-111 Taiwanese* 269513-AB1 Thai* 269513-281 Turkish* 269513-141 269513-031 269513-001 *Not shown. Compaq Deskpro EN Series of Personal Computers 3-15...

  • Page 75: Monitors

    Monitors Monitors 3-16 Spare Parts...
  • Page 76 8. TFT500, 15.1-inch Flat Panel display*; refer to Maintenance & Service Guide 297312-001 for spare parts list. 8. TFT450, 14.5-inch Flat Panel display; refer to Maintenance & Service Guide 170431-001 for spare parts list. *Not shown. Compaq Deskpro EN Series of Personal Computers 3-17...

  • Page 77: Miscellaneous Screw Kit

    Miscellaneous Screw Kit Table 3-8 Miscellaneous Screw Kit (not illustrated) Item Part Spare Part Warranty Tier Description Number Number Miscellaneous screw kit. Includes: 179180-001 1. Screw, #6-32 x 3/8 TT (4 each) 114399-069 2. Screw, #6-32 x .187 hi top serrated (5 each) 192308-003 3.

  • Page 78: Miscellaneous Plastics

    Miscellaneous Plastics Miscellaneous Plastics Compaq Deskpro EN Series of Personal Computers 3-19...
  • Page 79 Table 3-9 Miscellaneous Plastics Item Part Spare Part Warranty Description Number Number Tier Miscellaneous plastics kit. (Desktop) Includes: 179181-001 1. Foot (6 each) 141042-004 2. Expansion board cage guide bracket (2 each) 178980-001 3. Expansion board cage chassis-mounted guide 179118-001 bracket (2 each) 4.

  • Page 80: Miscellaneous Parts

    Miscellaneous Parts Miscellaneous Parts Compaq Deskpro EN Series of Personal Computers 3-21...
  • Page 81 Table 3-10 Miscellaneous Parts Item Part Spare Part Warranty Description Number Number Tier 1. Battery, real-time clock 334149-001 179322-001 2. Cable lock 173234-002 199109-001 3. Smart cover lock solenoid 270178-002 179189-001 4. Hard drive mounting bracket, 3.5” to 5.25” 247239-001 243231-001 5.

  • Page 82: Tamper-Resistant Tools/Smart Cover Failsafe Key

    Tamper-Resistant Tools/Smart Cover Failsafe Key Spare Part Warranty Description Number Tier 1. User tool, tamper-resistant wrench 166527-001 2. User tool, tamper-resistant bit (5 each) 166527-002 NOTE: There is no charge for these tools. Compaq Deskpro EN Series of Personal Computers 3-23...

  • Page 83: Shipping Boxes

    Return Kit, Desktop. Includes box, buns, and HDT insert 179324-001 Return Kit, Minitower. Includes box, buns, and HDT insert 179325-001 Return Kit, Compaq P70 Color Monitor. Includes boxes and buns 255644-001 Return Kit, Compaq P70 Color Monitor. Includes boxes and buns 255645-001 (5 pack) Return Kit, Compaq V90 Color Monitor.

  • Page 84: Removal And Replacement Preliminaries

    Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. Compaq Deskpro EN Series of Personal Computers...

  • Page 85: Generating Static

    4.1.1 Generating Static Table 4-1 shows how different activities generate static electricity at different electrostatic voltage levels. Table 4-1 Typical Electrostatic Voltages Relative Humidity Event Walking across carpet 35,000 V 15,000 V 7,500 V Walking across vinyl floor 12,000 V 5,000 V 3,000 V Motions of bench worker...

  • Page 86: Personal Grounding Methods And Equipment

    Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces. „ Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam. „ Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive. Compaq Deskpro EN Series of Personal Computers...

  • Page 87: Recommended Materials And Equipment

    4.1.5 Recommended Materials and Equipment Materials and equipment that are recommended for use in preventing static electricity include: „ Antistatic tape „ Antistatic smocks, aprons, or sleeve protectors „ Conductive bins and other assembly or soldering aids „ Conductive foam „ Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance „...

  • Page 88: Routine Care

    Visible debris underneath or between the keys may be removed by vacuuming or shaking. „ Canned, pressurized air may be used to clean debris from under the keys. Caution should be used as too much air pressure can dislodge lubricants applied under the wide keys. Compaq Deskpro EN Series of Personal Computers...

  • Page 89: Cleaning The Monitor

    If an incorrect screw is used during the reassembly process, it can damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

  • Page 90: Cables And Connectors

    Handle hard drives as delicate precision components, avoiding all physical shock and vibration. This applies to failed drives as well as replacement spares. „ Use only the packaging provided by Compaq for shipping. „ Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective packaging until they are actually mounted in the CPU.

  • Page 91: Serial Number Location

    Serial Number Location The computer serial number should be provided to Compaq when requesting information or ordering spare parts. The serial number is displayed on the top of the system unit cover at the right front corner and also on the rear of the computer.

  • Page 92: Disassembly Sequence Chart

    Disassembly Sequence Chart Use the chart below to determine the disassembly sequence for removing components from the computer. Computer Feet Preparation for Disassembly Cable Lock System Unit Cover 5.6.1 Quick Release Cover Latch 5.6.2 Power Button 5.6.3 Bezel Blank Cover Latch Retainer Drive Power Cables 5.9.1 Side-Mounted Hard Drive...

  • Page 93: Feet Installation

    To attach replacement feet to the chassis, remove the protective strip from the adhesive on the back of the new feet and press them into place. Installing the Feet Compaq Deskpro EN Series of Personal Computers...

  • Page 94: Preparation For Disassembly

    Preparation for Disassembly See Chapter 4, “Removal and Replacement Preliminaries,” for initial procedures. To prepare the computer for disassembly: 1. Remove any diskette or compact disc from the computer. 2. Turn off the computer and any peripheral devices that are connected to it. CAUTION: Turn off the computer before disconnecting any cables.

  • Page 95: Cable Lock Installation

    4. Install a lock (not provided) in the security bracket to control access to the inside of the computer. Install a cable lock (not provided) to secure the computer to a secure place. Installing the Cable Lock To remove the cable lock provision, reverse the installation procedure. Compaq Deskpro EN Series of Personal Computers...

  • Page 96: System Unit Cover Removal

    System Unit Cover Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 97: Quick Release Cover Latch Removal

    4. Separate the bezel from the system unit cover. The two cover release latches can be removed at this time. Removing the Front Bezel and Cover Latch To install the latches, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers...

  • Page 98: Power Button Removal

    5.6.2 Power Button Removal It is not necessary to remove the front bezel from the system unit cover to remove the power button. 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board.

  • Page 99: Bezel Blank Removal

    4. Squeeze together the sides of the right end of the bezel blank to release the catches. 5. Remove the bezel blank from the front bezel. Removing the Bezel Blank To reinstall the bezel blank, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers...

  • Page 100: Cover Latch Retainer Removal

    Cover Latch Retainer Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 101: Drive Power Cable Positions

    Connector Number Cable Connection Riser Board Not Used Lower Bay Device Side-Mounted (Primary) Hard Drive CD-ROM Drive (when present) Diskette Drive Compaq Deskpro EN Series of Personal Computers 5-11...

  • Page 102: Mass Storage Devices

    Mass Storage Devices 5.9.1 Side-Mounted Hard Drive Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 103: 5.25-Inch Drive Removal

    When installing a second device on the primary controller, use an 80-conductor Ultra ATA cable that supports the drive for optimal performance. When installing a CD-ROM drive, ensure that the guide screws are placed in the lower set of holes on the drive. Compaq Deskpro EN Series of Personal Computers 5-13...

  • Page 104: 3.5-Inch Drive Removal From 5.25-Inch Drive Adapter

    5.9.3 3.5-Inch Drive Removal from 5.25-Inch Drive Adapter 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 105 Refer to Section 5.8 for proper power cable connections. CAUTION: When returning the drive cage to its normal position, use caution to prevent damaging the data and power cables. Compaq Deskpro EN Series of Personal Computers 5-15...

  • Page 106: Drive Release Latches

    5.10 Drive Release Latches 5.10.1 3.5-Inch Drive Release Latch Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 107 To install the drive release latch, reverse the removal procedures. Refer to Section 5.8 for proper power cable connections. CAUTION: When returning the drive cage to its normal position, use caution to prevent damaging the data and power cables. Compaq Deskpro EN Series of Personal Computers 5-17...

  • Page 108: Tilt Drive Cage

    5.11 Tilt Drive Cage 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 109: Expansion Board Cage Components

    To reconnect the riser board which is mounted on the expansion board cage, to the system board, rotate the levers to their original positions to lock the assembly in place. Before reseating the assembly, ensure that the system board tray is completely pushed into the chassis. Compaq Deskpro EN Series of Personal Computers 5-19...

  • Page 110: Expansion Board Removal

    5.12.2 Expansion Board Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 111: Expansion Board Cage Removal

    4. Disconnect the power, data, and control cables from the rear of the riser board. Release the locking tab on the power cable connector to facilitate its removal. Disconnecting the Cables from the Rear of the Riser Board Compaq Deskpro EN Series of Personal Computers 5-21...
  • Page 112 5. Disconnect the speaker cable from the front of the riser board at P6 and unhook the cable from the top of the fan housing. Disconnecting the Speaker Cable from the Front of the Riser Board 6. Disconnect and raise the expansion board cage by levering it out of the system board (Section 5.12.1).
  • Page 113 Removing the Expansion Board Cage When reinstalling the expansion board cage, reverse the removal procedure. CAUTION: When returning the drive cage to its normal position, use caution to prevent damaging the data and power cables. Compaq Deskpro EN Series of Personal Computers 5-23...

  • Page 114: Riser Board Removal

    5.12.4 Riser Board Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 115: Expansion Board Cage Guide Bracket Removal

    Removing the Board Cage Guide Brackets To replace the guide brackets, reverse the removal procedure. CAUTION: When returning the drive cage to its normal position, use caution to prevent damaging the data and power cables. Compaq Deskpro EN Series of Personal Computers 5-25...

  • Page 116: Lift Lever Removal

    5.12.6 Lift Lever Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 117: Fan Removal

    6. Remove the screw from the fan retainer on the bottom of the fan cage assembly 2, then pivot the assembly up and out of the expansion board cage 3. Removing the Fan Assembly To replace the fan assembly, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 5-27...

  • Page 118: Expansion Board Cage Chassis-Mounted Guide Bracket Removal

    5.13 Expansion Board Cage Chassis-Mounted Guide Bracket Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 119: System Board And Its Components

    CAUTION: When removing and replacing the system board, do not allow the baffle mounted on top of the processor (on select models) to drag against the expansion boards. Removing the System Board To replace the system board, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 5-29...

  • Page 120: Microprocessor Removal

    5.14.2 Microprocessor Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 121 To replace the microprocessor, reverse the removal procedure. Before installing the microprocessor, pull the release tabs 1 out. Doing so will cause the unit to make an audible snap when it seats in the socket. Compaq Deskpro EN Series of Personal Computers 5-31...

  • Page 122: Memory Removal

    5.14.3 Memory Removal Memory may be expanded by adding or replacing up to three DIMMs on the system board. CAUTION: Static electricity can damage the electronic components of the computer or optional boards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

  • Page 123: Battery Removal

    WARNING: Do not abuse or disassemble the lithium battery, as it may explode if mistreated. Do not disassemble, crush, puncture, short external contacts, dispose of in water or fire, or expose it to temperatures higher than 60 C (140 Compaq Deskpro EN Series of Personal Computers 5-33...

  • Page 124: Graphics Solutions

    5.15 Graphics Solutions 5.15.1 AGP Graphics Board Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 125: Matrox Millennium Ii Graphics Memory

    Installing the Graphic Memory Module on the Matrox Millennium II AGP Graphics Board To install the graphics board, reverse the above procedure. The resolution must be changed via the Control Panel to take advantage of the additional display modes. Compaq Deskpro EN Series of Personal Computers 5-35...

  • Page 126: Ati Rage Pro Turbo Agp Graphics Memory Installation

    5.15.3 ATI RAGE PRO TURBO AGP Graphics Memory Installation It is not necessary to remove the graphics board to install the memory upgrade module. The NVIDIA RIVA 128 3D multimedia graphics board does not accept a memory module. The spare ATI RAGE PRO TURBO AGP 1X board ships without a memory module installed.

  • Page 127: Speaker Removal

    4. From the front of the chassis, remove the four screws that secure the speaker housing to the chassis; then remove the speaker assembly. Removing the Speaker Assembly To install the speaker, reverse the above procedure. Compaq Deskpro EN Series of Personal Computers 5-37...

  • Page 128: Power Supply Removal

    5.17 Power Supply Removal 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 129: Power Switch Cable Components

    2. Remove the system unit cover (Section 5.6). 3. From the rear of the chassis, use the tamper resistant wrench (Compaq Part Number 166527-001) or the special bit (Compaq Part Number 166527-002) to remove the three screws that secure the solenoid to the chassis.

  • Page 130: Power Switch Cable Assembly Removal

    5.18.2 Power Switch Cable Assembly Removal The power switch mounting bracket and status LEDs are a part of this cable assembly. 1. Prepare the computer for disassembly (Section 5.4). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board.
  • Page 131 To install the power switch assembly with the cable, reverse the removal procedure. Refer to Section 5.8 for proper power cable connections. CAUTION: When returning the drive cage to its normal position use caution to prevent damaging the data and power cables. Compaq Deskpro EN Series of Personal Computers 5-41...
  • Page 132 Serial Number Location The computer serial number should be provided to Compaq when requesting information or ordering spare parts. The serial number is displayed on the top of the system unit cover toward the right front and also on the rear of the computer.
  • Page 133 Disassembly Sequence Chart Use the chart below to determine the disassembly sequence for removing components from the computer. Preparation for Disassembly 6.4.1 Computer Base 6.4.2 Computer Feet Cable Lock Access Panel 6.7.1 Front Bezel 6.7.2 Power Button 6.7.3 Bezel Blank 6.8.1 Primary 3.5-Inch Hard Drive 6.8.2...
  • Page 134 During disassembly, label each cable as you remove it, noting its position and routing. Keep all screws with the units removed. CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong screw in an application may damage the unit. Compaq Deskpro EN Series of Personal Computers...

  • Page 135: Computer Base Assembly

    Computer Base Assembly 6.4.1 Computer Base Removal 1. Turn off the computer before rotating the computer. Failure to do so may cause damage to the internal components. 2. Lay the computer on its side and remove the four screws that secure the base to the bottom of the computer.

  • Page 136: Computer Feet Removal

    Installing New Computer Feet to the Computer Base Rubber feet are attached to the computer bottom as well as to the bottom of the computer base for customer convenience. Compaq Deskpro EN Series of Personal Computers...
  • Page 137 Cable Lock Installation The cable lock is an optional device used to help secure the unit. 1. Separate the pieces of the security bracket by bending the metal where the three pieces join (see inset). 2. Insert the tang of the narrow bracket into the slot, and slide the U-shaped bracket between it and the system unit cover (see inset);...

  • Page 138: Access Panel Removal

    4. Rotate the top of the access panel away from the chassis; then, pull it up and off the unit. Removing the Access Panel To replace the access panel, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers...

  • Page 139: Front Bezel Assembly

    Front Bezel Assembly 6.7.1 Front Bezel Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 140 5. Pinch together the two tabs on the rear of the power button, and push the button out of the front bezel. The spring will follow the button out of the housing. Removing the Power Button To replace the power button, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers...
  • Page 141 6.7.3 Bezel Blank Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 142: Primary 3.5-Inch Hard Drive Removal

    When replacing the drive with a new one, install two guide screws on each side of the drive before installing it into the drive bay. Extra mounting screws are located on the front of the chassis. To install a hard drive, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 6-11...

  • Page 143: Inch Drive Bay Device Removal

    6.8.2 5.25-Inch Drive Bay Device Removal This section describes how to remove any drive from a 5.25-inch drive bay. To remove a 3.5-inch drive from a 5.25-inch drive adapter, refer to Section 6.8.3. 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board.
  • Page 144 To install a new diskette drive, reverse the removal procedure. When installing either a replacement or a second diskette drive, you must configure the computer with Computer Setup to specify a drive size. Compaq Deskpro EN Series of Personal Computers 6-13...
  • Page 145 7. If this is a hard drive, remove the four screws that secure the drive in the adapter, then slide the drive out of the drive adapter. Removing the Hard Drive from the Drive Bay Adapter To install a new hard drive, reverse the removal procedure. 6-14 Minitower Removal and Replacement...

  • Page 146: Drive Release Latch Removal

    Removing the Drive Release Latch from the Drive Cage To install the green drive release latch, reverse the removal procedures. Compaq Deskpro EN Series of Personal Computers 6-15...
  • Page 147 6.10 Expansion Board Cage Components 6.10.1 Disconnecting and Raising the Expansion Board Cage 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 148 When installing a NIC expansion board, ensure that the Remote Wakeup cable is properly installed. Failure to do so may cause computer startup or network problems. The computer should automatically recognize the added plug and play expansion board. Compaq Deskpro EN Series of Personal Computers 6-17...
  • Page 149 6.10.3 Expansion Board Cage Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 150 6. Pull the expansion board cage straight out of the chassis. It is not necessary to remove the expansion boards or the fan before removing this assembly. Removing the Expansion Board Cage When reinstalling the expansion board cage, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 6-19...
  • Page 151 6.10.4 Riser Board Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 152 7. Press in on the two tabs 1 that secure each guide bracket to the cage, then slide the bracket toward the top of the cage to remove it. Removing the Board Cage Guide Brackets To replace the guide brackets, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 6-21...
  • Page 153 6.10.6 Lift Lever Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

  • Page 154: Fan Assembly Removal

    5. Press up on the bottom tabs on the fan housing 2, then pivot the assembly up and out of the expansion board cage 3. Removing the Fan Assembly To replace the fan assembly, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 6-23...
  • Page 155 6.11 Expansion Board Cage Chassis-Mounted Guide Bracket Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 156 6. Grasp the system board tray and pull it straight out of the rear of the chassis. Removing the System Board To replace the system board, reverse the removal procedure. It is not necessary to remove any cables from the system board to perform this operation. Compaq Deskpro EN Series of Personal Computers 6-25...
  • Page 157 6.12.2 Microprocessor Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 158 5. Lift the module from the socket. Replacing a Memory Module To replace a DIMM, reverse the removal procedure. When the computer starts up, it will recognize the system memory upgrades and automatically reconfigure the computer. Compaq Deskpro EN Series of Personal Computers 6-27...
  • Page 159 6.12.4 Battery Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 160 6. Remove the screw that secures the AGP board to the system board tray, then remove the AGP board. Removing an AGP Graphics Board To install the AGP board, reverse the removal procedure. Compaq Deskpro EN Series of Personal Computers 6-29...

  • Page 161: Matrox Millennium Ii Graphics Memory Upgrade

    6.13.2 Matrox Millennium II Graphics Memory Upgrade 1. Prepare the computer for disassembly (Section 6.3). 2. Remove the system unit cover (Section 6.6). 3. Lay the computer down on its side. 4. Disconnect and raise the expansion board cage (Section 6.10.1). 5.
  • Page 162 The resolution must be changed via the Control Panel to take advantage of the additional display modes. To remove the graphics memory module, release the retaining tabs before reversing the installation procedure. Compaq Deskpro EN Series of Personal Computers 6-31...
  • Page 163 6.14 Speaker Removal 1. Prepare the computer for disassembly (Section 6.3). CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.
  • Page 164 6. Pull the power supply forward to disengage the hooks, then lower the supply out of the chassis. Removing the Power Supply To replace the power supply, reverse the above procedure. Compaq Deskpro EN Series of Personal Computers 6-33...
  • Page 165 2. Remove the access panel (Section 6.6). 3. From the rear of the chassis, use the tamper resistant wrench (Compaq Part Number 166527-001) or the special bit (Compaq Part Number 166527-002) to remove the two screws that secure the solenoid to the chassis.
  • Page 166 4. Details of step 8 are shown on the next page. Removing the Power Switch Cable Assembly Compaq Deskpro EN Series of Personal Computers 6-35...
  • Page 167 Removing the Power Switch Cable Assembly To install the power switch cable assembly, reverse the removal procedure. 6-36 Minitower Removal and Replacement...
  • Page 168 7. The computer has the capability for using a Kensington cable lock device. This device is not available from Compaq. 8. To disable the Spread System function, use the jumper on P108 labeled "Spread Disable." Compaq Deskpro EN Series of Personal Computers...

  • Page 169: System Specifications

    Operating Humidity (noncondensing) 8 to 90% 8 to 90% Nonoperating Humidity (noncondensing) 5 to 95% 5 to 95% Maximum Operating Altitude (unpressurized) 10,000 ft 3,048 m Maximum Nonoperating Altitude (unpressurized) 30,000 ft 9,141 m Compaq Deskpro EN Series of Personal Computers...

  • Page 170: System Interrupts

    8.1.2 System Interrupts Hardware IRQ System Function IRQ 0 System Timer Interrupt (Not on ISA Bus) IRQ 1 Keyboard (Not on ISA Bus) IRQ 2 Primary/Secondary Controller 8254 Interface IRQ 3 Serial Port B IRQ 4 Serial Port A IRQ 5 Audio (Alternate = IRQ 7, 9, 10, 11, or 12) IRQ 6 Diskette Drive Controller...

  • Page 171: System I/O

    3E0 - 3E7 Unused 100 - 12F Unused 3E8 - 3EF Reserved (Serial Port) 130 - 131 Unused 3F0 - 3F7 Diskette Controller 132 - 16F Unused 3F8 - 3FF Serial Port (Primary) Compaq Deskpro EN Series of Personal Computers...

  • Page 172: System Memory Map

    8.2.1 Diskette Drive 1.44 MB Size and Capacity Size. 3.5 inches High Density 1.44 MB Low Density 720 KB Compaq Spare Part Number 179161-001 Light Green Height 1 inch Bytes per Sector Sectors per Track High Density Low density Tracks per Side...

  • Page 173: Ultra Ata Hard Drives

    Typical Seek Time (including settling) Single Track (ms) <1.0 Average (ms) <9.5 Full Stroke (ms) 20.0 20.0 18.0 Cylinders Logical 6296 13328 16383 Data Heads Logical Sectors per Track Logical Buffer Size (KB) Compaq Deskpro EN Series of Personal Computers...

  • Page 174: Wide Ultrascsi Hard Drives

    8.2.3 Wide UltraSCSI Hard Drives 4.3 GB 9.1 GB Compaq Spare Part Number 179287-001 179288-001 Transfer Rate Interface (MB/sec) 40.0 40.0 Typical Seek Time (including settling) Single Track (ms) 0.76 0.76 Average (ms) Full Stroke (ms) 17.0 15.0 Cylinders Physical...

  • Page 175: X Max Cd-Rom Drive

    Disc Thickness 1.2 mm Track Pitch 1.6 um Access Time Random 100 ms Full Stroke 150 ms Audio Output Level 0.7V (RMS) (typical) Data Transfer Rate Sustained 1500 to 3600 KB/sec Burst 16.6 MB/sec Compaq Deskpro EN Series of Personal Computers...
  • Page 176 8.2.5 32X Max CD-ROM Drive Compaq Spare Part Number 327659-001 Applicable Disc CD-ROM mode1, mode 2 Mixed mode (audio and data combined) CD-DA Photo CD (single and multi-session) CDi ready CD-XA ready Disc Diameter 12 cm, 8 cm Capacity 550 MB (Mode 1, 12 cm)
  • Page 177 Exceeds 1 million operations Exceeds 1 million operations Relative Humidity 10% to 90%, noncondensing 10% to 90%, noncondensing No soft errors through 10 kV; No hard errors through 15 kV; specific performance depends on host system Compaq Deskpro EN Series of Personal Computers...

  • Page 178: Supported Graphics Resolutions

    Supported Graphics Resolutions 8.5.1 ATI RAGE PRO TURBO Graphics Number of Colors Supported ATI RAGE PRO TURBO AGP ATI RAGE PRO TURBO AGP 2X Spare Part Number 179231-001 179186-001 Resolution 4-MB Memory 4-MB Memory 8-MB Memory 1600 × 1200 16.7M 1280 ×...

  • Page 179: System Board

    Spread System disable (select models) DIMM3 Switch 1, S1 through 6 *Board 007998-102 has the P15 connector located near the battery. Board 008123-101 has the P15 connector located near the riser board connector. Compaq Deskpro EN Series of Personal Computers...

  • Page 180: Riser Board

    Riser Board 9.2.1 Desktop Riser Board Front Side of Desktop Riser Board Table 9-2 Front Side of Riser Board Item Description Item Description ISA combination slot PCI combination slot ISA combination slot Speaker PCI connector slot PCI connector slot NIC Remote Wakeup PCI combination slot SCSI LED header Connectors, Jumpers, and Switches...
  • Page 181 Rear Side of Desktop Riser Board Table 9-3 Rear Side of Riser Board Item Description Item Description Power supply connector Diskette drive connector Hood control, power switch, LEDs Primary IDE connector CD audio connector Secondary IDE connector Compaq Deskpro EN Series of Personal Computers...

  • Page 182: Minitower Riser Board

    9.2.2 Minitower Riser Board Front Side of Minitower Riser Board Table 9-4 Front Side of Riser Board Item Description Item Description ISA combination slot PCI combination slot ISA combination slot Speaker PCI connector slot PCI connector slot NIC Remote Wakeup PCI combination slot SCSI LED header PCI combination slot...
  • Page 183 Rear Side of Minitower Riser Board Table 9-5 Rear Side of Riser Board Item Description Item Description Power supply connector Diskette drive connector Hood control, power switch, LEDs Primary IDE connector CD audio connector Secondary IDE connector Compaq Deskpro EN Series of Personal Computers...

  • Page 184: Switch Settings

    Switch Settings Switch SW1 Table 9-6 Switch SW1 Password Control Action Disable Password Enable Password Table 9-7 Switch SW1 Processor Speed Processor Speed 66 MHZ bus 100 MHz bus Table 9-8 Switch SW1 Power Switch Action Auxiliary Power Supply on, Main Power Supply on Auxiliary Power Supply on, Main Power Supply off Connectors, Jumpers, and Switches...

  • Page 185: System Board Jumpers

    6. Run the Computer Setup utility to reconfigure the system. When CMOS is cleared, both the power-on password and the setup password become invalid because both are stored in the configuration memory. You will need to reset the passwords. Compaq Deskpro EN Series of Personal Computers...

  • Page 186: Hard Drives

    Hard Drives Maxtor Ultra ATA Hard Drive Jumper Settings Table 9-9 Maxtor Ultra ATA Hard Drive Jumper Settings Definition Single Primary (in a dual drive system) Secondary Cable Select disabled* enabled 4092 Cylinder Limitation disabled* enabled Factory Reserved Factory Reserved J = jumper O = no jumper * = default setting...
  • Page 187 7 to 8 1-2 and 3-5 Primary 5 to 6 and 7 to 8 1-2 and 3-5 Secondary no connection Cable Select 5 to 6 2-4 and 3-5 Limit capacity to 2.1-GB 1 to 2 Compaq Deskpro EN Series of Personal Computers...
  • Page 188 Table A-1 Enhanced Keyboard Connector and Icon (Orange) Signal Data Unused Ground +5 VDC Clock Unused Table A-2 Mouse Connector and Icon (Green) Signal Data Unused Ground +5 VDC Clock Unused Compaq Deskpro EN Series of Personal Computers...
  • Page 189 Table A-3 Parallel Interface Connector and Icon Signal Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Acknowledge Busy Paper End Select Auto Linefeed Error Initialize Printer Select IN...
  • Page 190 Ground Red Ground Green Ground Blue Fused +5 Volt Supply Ground (syncs) Monitor ID Bit 0 Bi-directional Data (SDA)* Horizontal Sync Vertical Sync Data Clock (SCL)* * For DDC support (I 2 C monitors) Compaq Deskpro EN Series of Personal Computers...
  • Page 191 Table A-6 Ultra SCSI Connector and Icon Signal 1-11 Ground Reserved Open Reserved 15-25 Ground Ground Ground Reserved TERMPWR Reserved Ground ATN # Ground BSY # ACK # RST # MSG # SEL # REQ # Input/Output Table A-7 Line-Out Audio Connector Connector and Icon 1/8-inch Miniphone Connector Pin Assignments...
  • Page 192 Table A-8 Line-In Audio Connector Connector and Icon 1/8-inch Miniphone Table A-9 Microphone Connector Connector and Icon (Blue) Stereo 1/8-inch Miniphone Table A-10 Headphone Connector Connector and Icon Stereo 1/8-inch Miniphone Compaq Deskpro EN Series of Personal Computers...
  • Page 193 Table A-11 USB Connector Connector and Icon Signal - Data + Data Ground Table A-12 Ethernet RJ-45 Connector and Icon Signal (+) Transmit Data 1 3 5 7 (-) Transmit Data 2 4 6 8 (+) Receive Data Unused Unused (-) Receive Data Unused Unused...
  • Page 194 Table A-13 IDE/EIDE Drive Cable Signal Signal RESET DMARQ DIOW DIOR IORDY DD10 CSEL DMACK DD11 INTRQ DD12 IOCS16 DD13 PD1AG (80-pin cable detect) DD14 CS1FX DD15 CS3FX DASP (KEY) Compaq Deskpro EN Series of Personal Computers...
  • Page 195 Table A-14 SCSI CD-ROM Cable Signal Signal RESDRV_ OCHRDY CABLE SELECT IO16 PDIAG CS1FX CS3FX DASP AUDIO_R AUDIO_L A_GND_R A_GND_L (KEY) +5VMOT1 DREQ +5VMOT2 +5VMOT3 +5VMOT4 +5VMLOG1 +5VMLOG2 Connector Pin Assignments...
  • Page 196 SBA4 SBA5 AD14 AD13 SBA6 SBA7 AD12 AD11 AD10 C/BEO# VDDQ3.3 VDDQ3.3 AD31 AD30 AD STB0 RESERVED AD29 AD28 VCC3.3 VCC3.3 AD27 AD26 AD25 AD24 VDDQ3.3 VDDQ3.3 ADSTB1 RESERVED AD23 C/BE3# SMB0 SMB1 Compaq Deskpro EN Series of Personal Computers...

  • Page 197: General Requirements

    125 or 250 volts AC, as required by each country’s power system. 4. The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector, for mating with appliance inlet on the Switch Box. Compaq Deskpro EN Series of Personal Computers...
  • Page 198 Country-Specific Requirements Power Cord Set Requirements–By Country Country Accrediting Agency Applicable Note Numbers Australia EANSW Austria Belgium CEBC Canada Denmark DEMKO Finland SETI France Germany Italy Japan MITI Norway NEMKO Sweden SEMKO Switzerland United Kingdom United States Notes: 1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 1.0 mm conductor size.
  • Page 199 1, or secondary drive. This designation is necessary because both drives cannot work simultaneously. SMART The SMART IDE hard drives for the Compaq Deskpro Personal Computers have built-in drive failure prediction that warns the user or the network administrator of an impending failure or crash of the hard drive.
  • Page 200 Table D-1 lists the device codes (AABB-CC) and the subtest range (AABB-CC) covered by Compaq Diagnostics Tests. Some codes listed in this table will not apply to the computers described in this manual and will not be detailed in the tables that follow.
  • Page 201 Tables D-2 through D-18 list possible error codes, descriptions of each error condition, and actions required to resolve the error condition. Retest the system after completing each step. If the problem has been resolved, do not proceed with the remaining steps. For assistance in the removal and replacement of a particular subassembly, see Chapters 5 and 6, "Removal and Replacement Procedures."...
  • Page 202 0402-xx Printer port test failed. 1. Connect the printer. 0403-xx Printer pattern test failed. 2. Check power to the printer. 3. Install the loop-back connector and retest. 4. Replace system board and retest. Compaq Deskpro EN Series of Personal Computers...
  • Page 203 Table D-6 Diskette Drive Test Error Codes Error Code Description Recommended Action 0600-xx Diskette ID drive types test failed. The following steps apply to error codes 0600-xx through 0610-xx: 0601-xx Diskette format failed. 1. Replace the diskette media and retest. 0602-xx Diskette read test failed.
  • Page 204 4. Replace the tape adapter board (if applicable) and retest. 1905-xx Tape drive read test failed. 5. Replace the tape drive and retest. 1906-xx Tape drive write/read/compare failed. 6. Replace the system board and retest. 1910-xx Tape erase test failed. Compaq Deskpro EN Series of Personal Computers...
  • Page 205 Table D-11 Video Test Error Codes Error Code Description Recommended Action 2401-xx Graphics controller test failed. 1. Replace the video board and retest. 2. Replace the system board and retest. 2402-xx Video memory test failed. The following steps apply to error codes 2402-xx through 2419-xx: 2403-xx Video attribute test failed.
  • Page 206 4. Replace the system board. 6054-xx Network configuration test failed.** 6056-xx Network reset test failed.** 6068-xx Network internal test failed.** 6069-xx Network external test failed.** 6089-xx Network open test failed.** * Ethernet only. **Token Ring only. Compaq Deskpro EN Series of Personal Computers...
  • Page 207 Table D-14 CD-ROM Test Error Codes Error Code Description Recommended Action 6600-xx ID test failed. The following steps apply to error codes error codes 6600- xx through 6623-xx: 6605-xx Read test failed. 1. Replace the CD media and retest. 6608-xx Controller test failed.
  • Page 208 Device Names 65XX-XX Hard Drive 66XX-XX CD-ROM Drive and PD-CD Drive 67XX-XX Tape Drive Table D-17 Test Names XX00-XX XX05-XX Read XX06-XX SA/Media XX08-XX Controller XX09-XX Media erase XX23-XX Random read XX28-XX Media load/unload Compaq Deskpro EN Series of Personal Computers...
  • Page 209 Table D-18 Special Test Error Codes Error Code Description Recommended Action XXXX-02 Drive not installed. Check cable connections. XXXX-03 Media not in drive. Check for and install DATA CD or write-enabled tape in drive. XXXX-05 Seek failure. Replace the indicated device. XXXX-06 Drive timed out.
  • Page 210 1. Ensure proper air flow. 2. Perform required maintenance and cleaning. XXXX-99 Autoloader reported tapes not 1. Install tape(s) in autoloader tape drive according to loaded properly. test instructions. 2. Change autoloader magazine. Compaq Deskpro EN Series of Personal Computers D-11...
  • Page 211 3. Replace system board. 207-ECC corrected Single Bit ECC error Replace DIMM if error persists. single bit error in DIMM/SIMM pairs 1, 2, or 3 * L = Long, S = Short continued Compaq Deskpro EN Series of Personal Computers...
  • Page 212 Table E-1 Continued Message Beeps* Probable Cause Recommended Action 213-Incompatible DIMM DIMM is not fully compliant Replace DIMM module in DIMM sockets with SPD standard or is 1, 2, or 3 electrically incompatible with the hardware. 301-Keyboard Error None Keyboard failure. Reconnect keyboard with computer turned off.
  • Page 213 Controller or Disk Failure utilities. 1800-Temperature Alert None Internal temperature exceeds Check that computer air vents are not specification. blocked and cooling fan is running. * L = Long, S = Short continued Compaq Deskpro EN Series of Personal Computers...
  • Page 214 Table E-1 Continued Message Beeps* Probable Cause Recommended Action Invalid Electronic Serial None Electronic serial number has Run Computer Setup. Number become corrupted. Audible Power-on successful. None. Flashing Power and HD None Unseated backplane (system 1. Remove backplane. LEDs (simultaneously) will not boot)..

  • Page 215: Preliminary Checklist

    Remove all diskettes from the diskette drives before you turn on the system. „ Are all switch set correctly? „ Is the NIC Remote Wakeup cable (featured on some models) connected between the NIC and the riser/system board? Compaq Deskpro EN Series of Personal Computers...

  • Page 216: Solving Minor Problems

    Smart Cover Lock using Computer Setup. The Smart Cover FailSafe Key, a device for manually disabling the Smart Cover Lock, is available from Compaq. You’ll need the FailSafe Key in cases of forgotten password, power loss, or computer malfunction.

  • Page 217: Diskette Drive Problems

    "Hardware Installation Problems" section. System has misidentified the If a diskette drive other than a 3.5-inch, 1.44-MB drive has been diskette drive type installed, ensure that the drive type is identified correctly under Computer Setup. Compaq Deskpro EN Series of Personal Computers...

  • Page 218: Display Problems

    Display Problems This section identifies some quick checks for display-related problems. Table F-3 Solutions for Display Problems Problem Possible Solution Screen is blank. 1. Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on. 2.

  • Page 219: Printer Problems

    2. The cables may not be connected properly. Reconnect all cables. Printer is off line. The printer may be out of paper. Check the paper tray and refill it if it is empty. Select online. Compaq Deskpro EN Series of Personal Computers...

  • Page 220: Hard Drive Problems

    Hard Drive Problems This section identifies some quick checks for hard drive-related problems. The information provided by the diagnostics tests includes: error code, system serial number, drive serial number, drive model, and drive firmware revision. Specific details of the drive failure are not included.

  • Page 221: Hardware Installation Problems

    Reboot the computer and follow the instructions for accepting the changes. Additional setup utilities are available on the Compaq website at www.compaq.com or on the Compaq Support Software CD for Compaq Deskpro , Portable, and Workstation Products.
  • Page 222 CD-ROM Drive Problems This section identifies some quick checks for CD-ROM drive-related problems. Table F-7 CD-ROM Drive Problems Problem Possible Solution Cannot read compact disc. 1. CD is not properly seated in the drive. Eject the CD, correctly seat it in the drive, then reload. 2.

  • Page 223: Memory Problems

    System will not boot from a The SCSI drive is not configured correctly. SCSI drive. Ensure that drive cabling and jumpers are set correctly. To boot a SCSI drive, the drive ID number must be set to 0. Compaq Deskpro EN Series of Personal Computers...

  • Page 224: Network Problems

    Network Problems Some common causes and solutions for network problems are listed in the following table. These guidelines do not discuss the process of debugging network cabling. Table F-10 Network Problems Problem Possible Solution The Remote Wakeup feature is The feature is not available when using an AUI network connection; not functioning.
  • Page 225 The network controller is defective. Replace the network controller or system board. Cannot connect to the network The network controller is not configured properly. Run Computer server when attempting Remote Setup and modify the Embedded NIC Settings. System Installation Compaq Deskpro EN Series of Personal Computers F-11...

  • Page 226: Resolving Audio Hardware Conflicts

    The Local Alert Pop-Up Dialog notifies you of an impending or actual hardware failure. If the computer is connected to a network and the Compaq Insight Management Agents are installed and configured, an Simple Network Management Protocol (SNMP) trap (message) is sent to the specified SNMP-compliant management application.

  • Page 227: Guidelines For Installing Optional Scsi Devices

    SCSI device. Check the information that came with your device for the recommended SCSI ID number to be applied. The reserved and available SCSI ID numbers for Compaq computers are as follows: 0 is reserved for the primary hard drive and has the lowest device priority.
  • Page 228 This drive does not ship with terminating resistors. 3. Compaq SCSI-2 controllers have an automatic terminating device which turns OFF the terminator when both the external and internal SCSI signal ports connect to SCSI devices.
  • Page 229 1-4 Compaq Diagnostics for 5-13, 6-12 buttons Windows, 2-10 5.25-inch drive release latch power, 2-28 Compaq Insight Manager and removal and replacement, the Insight Management 5-17 Agents, 2-31 Compaq Insight Personal cable lock Edition, 2-10...
  • Page 230 line-in audio, A-5 PD-CD, D-9 desktop, 1-9 line-out audio, A-4 pointing device, D-8 minitower, 1-12 microphone pin assignments, printer, D-3 drive release latch serial port, D-4 removal and replacement, minitower rear panel, 1-13 summary, D-1 6-15 monitor, A-3 tape drive, D-5 mouse, A-1 video, D-6 parallel interface, A-2...
  • Page 231 1-4 graphics memory, Matrox Intelligent Manageability, change alerts, 2-16 Millennium II F-12 test error codes, D-3 removal and replacement, Enhanced Compaq Insight troubleshooting without 5-35, 6-30 Personal Edition, 2-10 diagnostics, F-9 graphics solutions, 1-4 features, 1-4 memory map, system, 8-4...
  • Page 232 miscellaneous plastics passwords, 2-15 cable removal and illustrated, 3-19 changing, 2-17 replacement, 5-40 miscellaneous plastics kit clearing, 2-18 cable removal and spare part number, 3-20 deleting, 2-18 replacement, 6-35 miscellaneous screw kit entering, 2-17 cable spare part number, 3-9 spare part numbers, 3-18 establishing, 2-16 power-on password, 2-15, models, 1-2...
  • Page 233 removal and replacement return kit hard drive, C-1 3.5-inch drive release latch, spare part number, 3-24 Smart Cover Lock, 2-16, 2-19 5-16 riser board Smart Cover Sensor, 2-15, 5.25-inch drive, 5-13, 6-12 disconnecting and raising, 2-19 5.25-inch drive release latch, 5-19, 6-16 setting protection level, 2-19 5-17...
  • Page 234 minitower spare part USB connector pin numbers, 3-5 assignments, A-6 system unit cover USB interface control, 2-15, removal and replacement, Using the Smart Cover FailSafe Key, 2-20 utilities Computer Setup, 2-4 tape drive using, 2-5 test error codes, D-5 terminators, SCSI, G-1, G-2 active, G-2 passive, G-2 video cable...

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