Page 2 - Minitower Models
Maintenance &Service Guide Compaq Deskpro EX and Deskpro EXSSeries of Personal Computers Minitower Models
Page 3 - Notice; Maintenance & Service Guide
Notice © 2000 Compaq Computer Corporation. Except for use in connection with the accompanying Compaq product, no part ofthis guide may be photocopied or reproduced in any form without prior written consent from Compaq ComputerCorporation. COMPAQ, the Compaq logo, and Deskpro Registered in U.S. Paten...
Page 4 - O N T E N T S
Contents iii C O N T E N T S preface About This Guide Symbols and Conventions .........................................................................................................viiTechnician Notes ....................................................................................................
Page 7 - BOUT; Symbols and Conventions; Technician Notes
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers vii preface A BOUT T HIS G UIDE This Maintenance & Service Guide is a troubleshooting and repair guide that can be usedfor reference when servicing the Compaq Deskpro EX Series of Personal Computers Minitower Model. Only authorized t...
Page 8 - Locating Additional Information
viii About This Guide 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 ...
Page 9 - chapter; RODUCT
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 1-1 chapter 1 P RODUCT D ESCRIPTION This chapter describes the model offerings and features of the Compaq Deskpro EX Seriesof Personal Computers Minitower Model.
Page 10 - Computer Features; Front Panel Controls and LEDs
1-2 Product Description 1.1 Computer Features Compaq Deskpro EX Series of Personal Computers Minitower Model ships with a mouseand keyboard. Some models are also equipped with a CD-ROM drive. A Compaq colormonitor or other compatible monitor does not ship with the computer. 1.1.1 Front Panel Control...
Page 11 - Rear Panel Connectors
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 1-3 1.1.2 Rear Panel Connectors Ref. Component Ref. Component 1 Mouse Connector 6 Monitor Connector 2 Keyboard Connector 7 Headphone/Line-Out Audio Connector 3 Universal Serial Bus (USB)Connectors (2) (connects thecomputer to any USB per...
Page 12 - Drive Positions
1-4 Product Description 1.1.3 Drive Positions Reference Drive Bay Configuration 1 , 2 1, 2 Two standard 5.25-inch, half-height bays for optional drives 3 3 One standard 3.5-inch, 1.44-MB diskette drive mounted with a driveadapter into a 5.25-inch bay 4 , 5 4, 5 Two standard 3.5-inch drive bays; Bay ...
Page 13 - Serial Number Location
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 1-5 1.2 Serial Number Location The serial number and model information label is located on the access panel of theunit 1 . A second barcode label is located on the rear of the unit 2 . For the purpose of AssetControl, the serial number i...
Page 14 - PARE
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 2-1 chapter 2 S PARE P ARTS
Page 15 - System Unit
2-2 Spare Parts 2.1 System Unit Description Spare PartNumber WarrantyTier 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 Plastic...
Page 16 - Mass Storage Devices
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 2-3 2.2 Mass Storage Devices Description Spare PartNumber WarrantyTier 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 ...
Page 17 - Cables
2-4 Spare Parts 2.3 Cables Description Spare PartNumber WarrantyTier Cable Kit includes: 192264-001 B 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 t...
Page 19 - Miscellaneous Plastics Kit
2-6 Spare Parts 2.5 Miscellaneous Plastics Kit Description Spare PartNumber WarrantyTier 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, powe...
Page 20 - Miscellaneous Screw Kit (not illustrated)
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 2-7 2.6 Keyboards (not illustrated) Description Spare PartNumber WarrantyTier 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 Miscel...
Page 21 - Documentation and Software (not illustrated)
2-8 Spare Parts 2.8 Miscellaneous Parts (not illustrated) Description Spare PartNumber WarrantyTier Mouse – Scroll, Opal 334689-002 D 2.9 Shipping Boxes (not illustrated) Description Spare Part Number Return Kit 166990-002 2.10 Documentation and Software (not illustrated) Description Spare Part Numb...
Page 22 - EMOVAL; Electrostatic Discharge Information; Generating Static
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 3-1 chapter 3 R EMOVAL & R EPLACEMENT P RELIMINARIES This chapter provides general service information for the computer. Adherence to theprocedures and precautions described in this chapter is essential for proper service. CAUTION: W...
Page 23 - Preventing Electrostatic Damage to Equipment; Static Shielding Protection Levels; Grounding Workstations
3-2 Removal & Replacement Preliminaries 3.1.2 Preventing Electrostatic Damage to Equipment Many electronic components are sensitive to ESD. Circuitry design and structuredetermine the degree of sensitivity. The following proper packaging and groundingprecautions are necessary to prevent damage t...
Page 24 - Recommended Materials and Equipment; Routine Care; General Cleaning Safety Precautions
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 3-3 ! Use fixtures made of static-safe materials when fixtures must directly contactdissipative surfaces. ! Keep work area free of nonconductive materials such as ordinary plastic assemblyaids and Styrofoam. ! Use field service tools, su...
Page 25 - Cleaning the Computer Case; Cleaning the Keyboard
3-4 Removal & Replacement Preliminaries 3.2.2 Cleaning the Computer Case Follow all safety precautions in Section 3.2.1 before cleaning the computer. To clean the computer case, follow the procedures described below: ! To remove light stains or dirt, use plain water with a clean, lint-free cloth...
Page 26 - Cleaning the Mouse; Service Considerations; Power Supply Fan; Tools and Software Requirements; Screws
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 3-5 3.2.5 Cleaning the Mouse Before cleaning the mouse, ensure that the power to the computer is turned off. ! Clean the mouse ball by first removing the retaining plate and the ball from thehousing. Pull out any debris from the ball soc...
Page 27 - Cables and Connectors; Lithium Coin Cell Battery
3-6 Removal & Replacement Preliminaries 3.3.4 Cables and Connectors Most cables used throughout the unit are flat, flexible cables. These cables must behandled with care to avoid damage. Apply only the tension required to seat or unseat thecables during insertion or removal from the connector. H...
Page 28 - EMOVAL AND; Disassembly Sequence Chart
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-1 chapter 4 R EMOVAL AND R EPLACEMENT P ROCEDURES This chapter provides general service information for the computer. Adherence to theprocedures and precautions described in this chapter is essential for proper service. After completin...
Page 29 - Disassembly Preparation
4-2 Removal & Replacement Procedures 4.2 Disassembly Preparation Before adding any internal options or performing a removal/replacement: 1. Remove any diskette, compact disc, or tape from the computer. 2. Turn off the computer and any peripheral devices that are connected to it. WARNING: Power i...
Page 30 - Feet Installation
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-3 4.3 Feet Installation Four (4) rubber feet are mounted to the chassis, as shown below. No parts have to beremoved to access the feet. The replacement feet have an adhesive surface and are shippedwith a protective backing in place. Re...
Page 31 - Cable Lock
4-4 Removal & Replacement Procedures 4.4 Cable Lock WARNING: To avoid injury, use care in handling the separated pieces of the cable lock bracket; metal edges may be sharp. Be sure to install the bracket so that sharp edges donot extend from the edges of the computer chassis. Depending on the mo...
Page 32 - Access Panel
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-5 4.5 Access Panel 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power c...
Page 33 - Front Bezel
4-6 Removal & Replacement Procedures 4.6 Front Bezel 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the powersource or...
Page 34 - Power Button
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-7 4.7 Power Button 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power c...
Page 35 - Subpanel and Bezel Blanks
4-8 Removal & Replacement Procedures 4.8 Subpanel and Bezel Blanks The subpanel and bezel blanks must be removed from the front bezel if you are installinga mass storage device for the first time. WARNING: Power is continuous to the system board and power supply even when the power switch is tur...
Page 36 - Power Switch Assembly
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-9 4.9 Power Switch Assembly CAUTION: The power switch should not be removed from the switch holder. Doing so may damage the switch components. 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the s...
Page 38 - Using the Cable-Select Feature with Ultra ATA Devices
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-11 When installing additional drives, follow these guidelines: ! For optimal performance, connect hard drives to the primary controller. Connectexpansion devices, such as CD-ROM, IDE tape, and diskette drives to thesecondary controller...
Page 43 - Expansion Boards; Expansion Board Slots
4-16 Removal & Replacement Procedures 4.11 Expansion Boards 4.11.1 Expansion Board Slots 1 PCI expansion slots 2 AGP graphics slot
Page 44 - Removing a PCI Expansion Board
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-17 4.11.2 Removing a PCI Expansion Board 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, ...
Page 45 - Installing a PCI Expansion Board
4-18 Removal & Replacement Procedures 4.11.3 Installing a PCI Expansion Board 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cor...
Page 47 - System Memory; DIMMs
4-20 Removal & Replacement Procedures 4.12 System Memory The computer comes with synchronous dynamic random access memory (SDRAM) dualinline memory modules (DIMMs). The Intel 815 chipset comes with at least 64 MB ofSDRAM DIMMS, upgradeable to 512 MB. DIMMs The memory sockets on the Intel 815 chi...
Page 49 - Graphics Cards; Removing a GPA/AIMM Card
4-22 Removal & Replacement Procedures 4.13 Graphics Cards The AGP expansion slot may come with a retention mechanism installed around it to holdthe graphics cards securely in place. There are two different types of retentionmechanisms that may be installed around the AGP expansion slot. 4.13.1 G...
Page 50 - Installing a GPA/AIMM Card
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-23 Installing a GPA/AIMM Card WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the powersource or the unit before ...
Page 52 - AGP Card with a Type I Retention Mechanism; Removing an AGP Card
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-25 4.13.2 AGP Card with a Type I Retention Mechanism Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base for greater stability. 3. Remove the access panel (Section 4.5)...
Page 53 - GPA/AIMM Card with a Type 2 Retention Mechanism
4-26 Removal & Replacement Procedures 4.13.3 GPA/AIMM Card with a Type 2 Retention Mechanism Removing a GPA/AIMM Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base for greater stability. 3. Remove the access panel (Section 4.5). 4. Pull the arm...
Page 54 - AGP Card with a Type 2 Retention Mechanism
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-27 4.13.4 AGP Card with a Type 2 Retention Mechanism Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base for greater stability. 3. Remove the access panel (Section 4.5)...
Page 55 - Standard AGP Expansion Card
4-28 Removal & Replacement Procedures 4.13.5 Standard AGP Expansion Card Removing an AGP Card 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base for greater stability. 3. Remove the access panel (Section 4.5). 4. Remove the screw at the top of the e...
Page 56 - Processor
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-29 4.14 Processor 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power co...
Page 58 - System Board
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-31 4.15 System Board ✎ More information on the system board, including troubleshooting criteria, can befound in the Compaq Quick Troubleshooting Guide (part number 153837-001)and the Compaq Service Reference Guide (part number 152611-0...
Page 59 - Battery
4-32 Removal & Replacement Procedures 4.16 Battery 1. Prepare the computer for disassembly (Section 4.2). 2. Lay the computer down on its large base for greater stability. 3. Remove the access panel (Section 4.5). 4. Locate the battery on the system board. If you have expansion boards installed,...
Page 60 - Chassis Fan Assembly
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 4-33 4.17 Chassis Fan Assembly ✎ If the unit has a 866 - 933MHz processor, it requires an external chassis fan. 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even...
Page 61 - Power Supply
4-34 Removal & Replacement Procedures 4.18 Power Supply 1. Prepare the computer for disassembly (Section 4.2). WARNING: Power is continuous to the system board and power supply even when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the powersource...
Page 62 - ONNECTORS AND; Connectors and Jumpers
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 5-1 chapter 5 C ONNECTORS AND J UMPERS This chapter provides connector, jumper, and switch information for system boardjumpers, system I/O board connectors, and hard drives for the Desktop Model. 5.1 System Board 5.1.1 Connectors and Jum...
Page 63 - Clearing CMOS
5-2 Connectors and Jumpers 5.1.2 Clearing CMOS The computer's configuration (CMOS) may occasionally be corrupted. If it does, it isnecessary to clear the CMOS memory using push button switch SW50. To clear and reset the configuration, perform the following procedure: 1. Prepare the computer for disa...
Page 64 - Disabling or Clearing the Power-On and Setup Passwords
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 5-3 5.1.3 Disabling or Clearing the Power-On and Setup Passwords 1. Turn off the computer and any external devices, and disconnect the power cord fromthe power outlet. 2. Disconnect the keyboard, monitor, and any other external devices c...
Page 65 - Hard Drive Jumper Settings; Ultra ATA Hard Drive Jumper Settings
5-4 Connectors and Jumpers 5.2 Hard Drive Jumper Settings 5.2.1 Seagate, Quantum, and Western Digital The drawings and tables below apply to a number of different size drives in the followingparagraphs. Seagate, Quantum, and Western Digital Ultra ATA Hard Drive Jumper Settings Definition Seagate Qua...
Page 66 - Maxtor; Maxtor Ultra ATA Hard Drive Jumper Settings
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 5-5 5.2.2 Maxtor Maxtor Ultra ATA Hard Drive Jumper Settings Definition J50 J48 J46 J44 J42 Single J Primary (in a dual-drive system) J Secondary O Cable Select Disabled*Enabled OJ 4092 Cylinder Limitation Disabled*Enabled OJ Factory Res...
Page 67 - PECIFICATIONS; Specifications; System
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 6-1 chapter 6 S PECIFICATIONS 6.1 Specifications 6.1.1 System Dimensions HeightWidthDepth 17.65 in 6.60 in16.80 in 44.83 cm16.76 cm42.67 cm Weight (approximate, depending on configuration) 26 lb 11.8 kg Power Supply, 200 Watt Operating V...
Page 68 - System Interrupts; System DMA
6-2 Specifications 6.1.2 System Interrupts Hardware IRQ System Function 0 Timer Interrupt 1 Keyboard 2 Interrupt Controller Cascade 3 Serial Port (COM B) 4 Serial Port (COM A) 5 Audio 6 Diskette Drive 7 Parallel Port (LPT 1) 8 Real-Time Clock 9 Available for PCI 10 Available for PCI 11 Available for...
Page 69 - ICH Fixed I/O Registers
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 6-3 6.1.4 ICH Fixed I/O Registers Port Register Name 00h, 02h, 04h, 06h Channel 0, 1, 2, 3 DMA Base & Current Address Regsiter C0h, C4h, C8h, CCh Channel 4, 5, 6, 7 DMA Base & Current Address Register 01h, 03h, 05h, 07h Channel 0...
Page 71 - System Memory Map
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 6-5 ICH Fixed I/O Registers cont Port Register Name 1F0h-1F7h PIO Mode Command Block Offset for Primary Drive 376h PIO Mode Control Block Offset for Secondary Drive 3F6h PIO Mode Control Block Offset for Primary Drive 4D0h Master PIC Edg...
Page 72 - Drives
6-6 Specifications 6.2 Drives 6.2.1 1.44-MB Diskette Drive Size and Capacity Size (in)High Density (MB)Low Density (KB) 3.51.44720 Compaq Spare Part Number 210795-001 Light Green Drive Rotation (rpm) 300 Height One-third (1 inch) Bytes per Sector 512 Sectors per Track (high/low density) 18/9 Tracks ...
Page 73 - Ultra ATA Hard Drives
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 6-7 6.2.2 Ultra ATA Hard Drives 10.0 GB 15.0 GB Formatted Capacity Physical (MB)Logical (MB) 1024210242 1536415364 Compaq Spare Part Number 203139-001 202903-001 Logical Block Allocation Total SectorsUser Addressable Sectors 165140641954...
Page 75 - Compaq Keyboard
Compaq Deskpro EX and Deskpro EXS Series of Personal Computers 6-9 6.3 Compaq Keyboard Compaq Easy Access Dimensions HeightWidthDepth 1.4 in18.3 in6.3 in 6.4 Scroll Mouse Dimensions HeightLengthWidth 1.34 in4.45 in2.36 in 3.4 cm11.3 cm6.0 cm Weight 4.59 oz 130 g Base Resolution 400 dpi 15.8 dp Track...
Page 76 - Supported Graphics Resolutions; Intel 3D Graphics; nVIDIA M64 Pro
6-10 Specifications 6.5 Supported Graphics Resolutions 6.5.1 Intel 3D Graphics Colors 256 65K 16.7M 640 x 480 85 Hz 85 Hz 85 Hz 800 x 600 85 Hz 85 Hz 85 Hz 1024 x 768 85 Hz 85 Hz 85 Hz 1152 x 864 85 Hz 85 Hz 85 Hz 1280 x 1024 85 Hz 85 Hz 85 Hz 1600 x 1200 85 Hz 85 Hz 85 Hz 6.5.2 nVIDIA M64 Pro Mode ...
Page 77 - Index
Index I-1 Index A access panel removal and replacement, 4-5 AGP card spare part number, 2-3 AGP retention mechanism, 4-22AIMM card spare part number, 2-3 B battery proper disposal, 4-32removal and replacement, 4-32 C cable kit spare part number, 2-2 cable lock removal and replacement, 4-4 cable sele...
