About this Guide, Symbols and Conventions | Compaq EX Series

preface

ABOUT THIS GUIDE

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

Compaq Computer Corporation reserves the right to make changes to the these models without notice.

Symbols and Conventions

The following text and symbols mark special messages throughout this guide:

!	WARNING: Text set off in this manner indicates that failure to follow directions in the warning 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 data.

✎ Text set off in this manner presents commentary, sidelights, clarifying information, or specific instructions.

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. Improper repairs
		can create a safety hazard. Any indications of component replacement or printed wiring board
		modifications may void any warranty.

	!	WARNING: To reduce the risk of electric shock or damage to the equipment:
	!	•	Do not disable the power grounding plug. The grounding plug is an important safety feature.
		•
		•	Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
			times.
		•	Disconnect the power from the computer by unplugging the power cord either from the
			electrical outlet or the computer.

CAUTION: To properly ventilate your system, you must provide at least 3 inches (7.6 cm) of clearance at the front and back of the computer.

Compaq Deskpro EX and Deskpro EXS Series of Personal Computers vii

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Compaq EX Series, EXS Series manual About this Guide, Symbols and Conventions, Technician Notes

Contents

Maintenance & Service Guide Maintenance & Service Guide Maintenance & Service Guide Contents Removal and Replacement Procedures Specifications About this Guide Symbols and ConventionsTechnician Notes Locating Additional Information Product Description Chapter Front Panel Controls and LEDs Computer FeaturesComponent/Function Component Rear Panel Connectors Drive Positions Reference Drive Bay Configuration Serial Number Location Spare Parts System Unit Spare Part Warranty Description Number Tier Mass Storage Devices Cables Standard, Memory, and Expansion Boards Miscellaneous Plastics Kit Miscellaneous Screw Kit not illustrated Keyboards not illustrated Description Spare Part Number Miscellaneous Parts not illustratedShipping Boxes not illustrated Documentation and Software not illustrated Relative Humidity Event 55% 40% 10% Removal & Replacement PreliminariesElectrostatic Discharge Information Generating Static Method Voltage Preventing Electrostatic Damage to EquipmentPersonal Grounding Methods and Equipment Grounding Workstations Routine Care General Cleaning Safety PrecautionsRecommended Materials and Equipment Cleaning the Keyboard Cleaning the Computer CaseCleaning the Monitor Tools and Software Requirements Service ConsiderationsCleaning the Mouse Power Supply Fan Lithium Coin Cell Battery Cables and ConnectorsHard Drives Disassembly Sequence Chart Removal and Replacement Procedures Disassembly Preparation Feet Installation Cable Lock Access Panel Front Bezel Power Button Subpanel and Bezel Blanks Power Switch Assembly Drive Positions Using the Cable-Select Feature with Ultra ATA Devices Removing an Internal 3.5-Inch Hard Drive Removing an External 5.25-Inch Drive Removing an External 3.5-Inch Drive Page Expansion Board Slots Expansion Boards Removing a PCI Expansion Board Installing a PCI Expansion Board Page System Memory Memory Module InstallationDIMMs Page Graphics Cards Installing a GPA/AIMM Card 24Removal & Replacement Procedures Removing an AGP Card AGP Card with a Type I Retention Mechanism 13.3 GPA/AIMM Card with a Type 2 Retention Mechanism AGP Card with a Type 2 Retention Mechanism Standard AGP Expansion Card Processor 30Removal & Replacement Procedures System Board Battery Chassis Fan Assembly Power Supply Connectors and Jumpers Connectors and Jumpers Clearing Cmos Disabling or Clearing the Power-On and Setup Passwords Seagate, Quantum, and Western Digital Hard Drive Jumper SettingsDefinition Seagate Quantum Western Digital Definition J50 J48 J46 J44 J42 Maxtor Specifications SpecificationsSystem Hardware DMA System Function System InterruptsSystem DMA Hardware IRQ System Function Port Register Name ICH Fixed I/O Registers ICH Fixed I/O Registers Port Register Name Size Memory Address System Function System Memory Map MB Diskette Drive Drives 10.0 GB 15.0 GB Ultra ATA Hard Drives 48X Max CD-ROM Drives Scroll Mouse Compaq Keyboard NVIDIA M64 Pro Supported Graphics ResolutionsColor Depth Mode Bits/pixel Refresh Rate Hz Intel 3D Graphics Index 2Index