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Maintenance &
Service Guide
Compaq Deskpro EX and Deskpro EXS
Series of Personal Computers
Minitower Models
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Maintenance & Service Guide Compaq Deskpro EX and Deskpro EXS Series of Personal Computers Minitower Models
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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 registe
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ONTENTS C preface About This Guide Symbols and Conventions.........................................................................................................vii Technician Notes.......................................................................................................................vii Locating Additional Information .............................................................................................viii chapter 1 Product Description 1.1 Computer Features.............
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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
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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.....................................................................
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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: WARN
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Locating Additional Information The following documentation is available to support these products: User Documentation Technical Training Guides Compaq Service Advisories and Bulletins Compaq QuickFind Technical Reference Guide Compaq Quick Reference Guide Compaq Service Reference Guide Compaq Quick Troubleshooting Guide viii About This Guide
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chapter 1 PRODUCT DESCRIPTION This chapter describes the model offerings and features of the Compaq Deskpro EX Series of Personal Computers Minitower Model. Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 1-1
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1.1 Computer Features Compaq Deskpro EX Series of Personal Computers Minitower Model ships with a mouse and keyboard. Some models are also equipped with a CD-ROM drive. A Compaq color monitor or other compatible monitor does not ship with the computer. 1.1.1 Front Panel Controls and LEDs Ref. Component/Function Ref. Component/Function Stereo Headphone Jack* CD-ROM Eject Button* 1 6 Headphone Volume Control* CD-ROM Drive Busy Indicator* 2 7 3 Diskette Drive Activity Light 8 Diskette Eject Button
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1.1.2 Rear Panel Connectors Ref. Component Ref. Component Mouse Connector Monitor Connector 1 6 2 Keyboard Connector 7 Headphone/Line-Out Audio Connector 3 Universal Serial Bus (USB) 8 Serial Connector Connectors (2) (connects the computer to any USB peripheral while the computer is operating; is a fully functional plug and play connector) 4 Serial Connector 9 Line-In Audio Connector Parallel Port Connector Microphone Connector 5 : Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 1
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1.1.3 Drive Positions Reference Drive Bay Configuration 1, 2 Two standard 5.25-inch, half-height bays for optional drives 1, 2 3 3 One standard 3.5-inch, 1.44-MB diskette drive mounted with a drive adapter into a 5.25-inch bay 4, 5 4, 5 Two standard 3.5-inch drive bays; Bay 4 contains the preinstalled hard drive; Bay 5 is available for an optional hard drive Drive bay numbers are stamped on the chassis. To verify the type and size of the mass storage devices installed in the computer, run F10 Co
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1.2 Serial Number Location The serial number and model information label is located on the access panel of the unit 1. A second barcode label is located on the rear of the unit 2. For the purpose of AssetControl, the serial number is embedded in CMOS and in the EEPROM on the system board and may be accessed through Diagnostics for Windows. If the system board is replaced with a spare part from Compaq, the invalid serial number condition will be recognized during POST. The original serial number
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chapter 2 SPARE PARTS Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 2-1
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2.1 System Unit Spare Part Warranty Description Number Tier 1 Access panel Not spared 2 Front bezel 166868-001 B 3 Chassis/basepan Not spared 4 Logo Kit (only minitower version-166806-002-used) 166924-001 B 5 Power switch with cable, LED and switch holder 199854-001 6 Feet Misc Plastics Kit B 7 Power supply 201828-001 B 2-2 Spare Parts
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2.2 Mass Storage Devices Spare Part Warranty Description Number Tier 1 Diskette drive, 3.5-inch 158266-001 D 2 48X Max tray load IDE CD-ROM drive 187263-001 B 3 10.0-GB Ultra ATA hard drive (66/5400) quiet 203139-001 B * 15.0-GB Ultra ATA hard drive (66/5400) 202903-001 B *Not shown (nn/nnnn) = hard drive transfer rate (MBytes/sec)/RPM Ultra ATA/100 hard drives are backwards compatible with Ultra ATA/66 devices; however, the data transfer rate is reduced to 66MB/sec. Compaq Deskpro EX and Deskpr
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2.3 Cables Spare Part Warranty Description Number Tier B Cable Kit includes: 192264-001 1 Single device, hard drive/CD-ROM cable, 18” (108950-019) 2 Audio cable, 21” (387527-001) * Single device, hard drive/CD-ROM cable, 12.5” (105876-001) * Audio cable, 21”, (288489-002) (not used for this product) 3 Single device, hard drive/CD-ROM cable, 9.75” (108950-021) 4 Dual device, hard drive/CD-ROM cable, 18”, 10” to the first 196667-001 B connector 5 Power switch/LED cable 199854-001 B 6 Diskette driv
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2.4 Standard, Memory, and Expansion Boards Spare Part Warranty Description Number Tier 1 Nvidia M64 16MB SDRAM AGP Card 182757-001 B 5 AIMM (GPA) 4MB, 133MHz for graphics 192012-001 B Memory Module (SDIMM, 133 MHz) 2 128 MB 170081-001 B 256 MB 192014-001 B Intel Pentium III Processor 3 566/66 MHz with heatsink (191832-002) and clip (223575-007). 203967-001 B * 600/66 MHz with heatsink (191832-002) and clip (223575-007). 192011-001 B * 667/133 MHz with heatsink (191832-002) and clip (223575-007).
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2.5 Miscellaneous Plastics Kit Spare Part Warranty Description Number Tier Miscellaneous Plastics Kit, includes: 166878-001 B 1 Panel, sub (166835-001) 2 Bezel, blank (166775-001) 3 Diskette bezel (166776-001) 4 Card guide (166778-001) 5 Foot, rubber (4 ea.) (166939-002) 6 Button, power (166774-001) 7 Drivelock, DT (166779-001) (not used with this product) 8 Spring, power button (166837-001) 9 Springs, drivelock (2 ea.) (166837-002) 10 Drivelock, MT (166780-001) * Retention mechanism (2 ea.) (35
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2.6 Keyboards (not illustrated) Spare Part Warranty Description Number Tier Easy Access Keyboard-US 123130-xxx D Dutch -331 Finnish -351 French -051 International -B31 Norwegian -091 Spanish -071 Swedish -101 UK -031 US -001 2.7 Miscellaneous Screw Kit (not illustrated) Spare Part Warranty Description Number Tier Miscellaneous Screw Kit, includes: 179180-001 D 6-32 x 1/4 hi-top, thread-forming screw with serrations (5 ea.) (192308-001) 6-19 x 5/16 panhead, plastite screw (4 ea.) (101346-068) 6-1
