Compaq 215999-002 - Deskpro EX - 64 MB RAM User manual

Compaq Deskpro EX

Series of Personal Computers

Desktop Models

Maintenance &

Service Guide

Maintenance &

Service Guide

Compaq Deskpro EX Series

of Personal Computers

Desktop Models

Notice

this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer

Corporation.

COMPAQ, the Compaq logo, and Deskpro Registered in U.S. Patent and Trademark Office are trademarks of Compaq

Information Technologies Group, L.P.

Microsoft, Windows, Windows NT, and other names of Microsoft products referenced herein are trademarks or registered

trademarks of Microsoft Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Celeron and MMX are trademarks of Intel Corporation.

All other product names mentioned herein may be trademarks or registered trademarks of their respective companies.

Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document

is subject to change without notice.

THE INFORMATION IN THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.

THE ENTIRE RISK ARISING OUT OF THE USE OF THIS INFORMATION REMAINS WITH RECIPIENT. IN NO

EVENT SHALL COMPAQ BE LIABLE FOR ANY DIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL,

PUNITIVE OR OTHER DAMAGES WHATSOEVER (INCLUDING WITHOUT LIMITATION, DAMAGES FOR

LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION OR LOSS OF BUSINESS INFORMATION), EVEN IF

COMPAQ HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND WHETHER IN AN ACTION

OF CONTRACT OR TORT, INCLUDING NEGLIGENCE.

The limited warranties for Compaq products are exclusively set forth in the documentation accompanying such

products. Nothing herein should be construed as constituting a further or additional warranty.

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

WARNING:

Text set off in this manner indicates that failure

to follow directions could result in bodily harm or loss of life.

CAUTION:

Text set off in this manner indicates that failure to

follow directions could result in damage to equipment or loss of

information.

Maintenance & Service Guide

Compaq Deskpro EX Series of Personal Computers

Desktop Models

First Edition (September 2000)

Part Number 201855-001

Spare Parts Number 215877-001

Compaq Computer Corporation

Contents iii

C

ONTENTS

preface

About This Guide

Symbols and Conventions.........................................................................................................vii

Technician Notes.......................................................................................................................vii

Locating Additional Information .............................................................................................viii

chapter 1

Product Description

1.1 Product Features.............................................................................................................1-2

1.1.1 Front Panel Controls and LEDs ......................................................................... 1-2

1.1.2 Rear Panel Connectors....................................................................................... 1-3

1.1.3 Drive Positions................................................................................................... 1-4

1.2 Serial Number Location.................................................................................................. 1-5

chapter 2

Spare Parts

2.1 System Unit .................................................................................................................... 2-1

2.2 Mass Storage Devices..................................................................................................... 2-2

2.3 Cables ............................................................................................................................. 2-2

2.4 Standard, Memory, and Expansion Boards .................................................................... 2-3

2.5 Keyboards....................................................................................................................... 2-4

2.6 Miscellaneous Screw Kit................................................................................................ 2-4

2.7 Miscellaneous Parts........................................................................................................ 2-5

2.8 Shipping Boxes...............................................................................................................2-5

2.9 Documentation and Software ......................................................................................... 2-5

chapter 3

Removal and Replacement Preliminaries

3.1 Electrostatic Discharge Information............................................................................... 3-1

3.1.1 Generating Static................................................................................................ 3-1

3.1.2 Preventing Electrostatic Damage to Equipment................................................. 3-2

3.1.3 Personal Grounding Methods and Equipment ................................................... 3-2

3.1.4 Grounding Workstations.................................................................................... 3-2

3.1.5 Recommended Materials and Equipment........................................................... 3-3

3.2 Routine Care................................................................................................................... 3-3

3.2.1 General Cleaning Safety Precautions................................................................. 3-3

3.2.2 Cleaning the Computer Case.............................................................................. 3-4

3.2.3 Cleaning the Keyboard....................................................................................... 3-4

3.2.4 Cleaning the Monitor ......................................................................................... 3-4

3.2.5 Cleaning the Mouse............................................................................................ 3-5

3.3 Service Considerations ................................................................................................... 3-5

3.3.1 Power Supply Fan.............................................................................................. 3-5

3.3.2 Tools and Software Requirements ..................................................................... 3-5

3.3.3 Screws................................................................................................................ 3-5

3.3.4 Cables and Connectors....................................................................................... 3-6

iv Contents

3.3.5 Hard Drives........................................................................................................ 3-6

3.3.6 Lithium Coin Cell Battery.................................................................................. 3-6

chapter 4

Removal and Replacement Procedures

4.1 Disassembly Sequence Chart.......................................................................................... 4-1

4.2 Disassembly Preparation................................................................................................. 4-2

4.3 Computer Cover ............................................................................................................. 4-3

4.4 Front Bezel ..................................................................................................................... 4-4

4.5 Bezel Blank..................................................................................................................... 4-5

4.6 Power Switch/LED Cable............................................................................................... 4-6

4.7 Mass Storage Devices..................................................................................................... 4-7

Using the Cable-Select Feature with Ultra ATA Devices........................................... 4-7

4.7.1 Removing the Internal, Side-Mounted, 3.5-Inch Hard Drive............................. 4-8

4.7.2 Removing an External 5.25-Inch Drive from Right Drive Bay ....................... 4-10

4.7.3 Removing the Diskette Drive........................................................................... 4-11

4.7.4 Removing an External 5.25-Inch Drive from the Left Drive Bay.................... 4-12

4.8 System Memory............................................................................................................ 4-13

DIMMs ......................................................................................................................... 4-13

Memory Module Installation........................................................................................ 4-13

4.9 Expansion Boards......................................................................................................... 4-15

4.9.1 Expansion Slot Location.................................................................................. 4-15

4.9.2 Removing or Installing a PCI Expansion Board.............................................. 4-15

4.10 Graphics Cards..............................................................................................................4-17

4.10.1 Graphics Performance Accelerator (GPA)/AGP Inline Memory

Module (AIMM) Card with a Type I Retention Mechanism.................................... 4-17

Removing a GPA/AIMM Card................................................................................. 4-17

Installing a GPA/AIMM Card................................................................................... 4-18

4.10.2 AGP Card with a Type I Retention Mechanism............................................... 4-20

Removing an AGP Card............................................................................................ 4-20

4.10.3 GPA/AIMM Card with a Type 2 Retention Mechanism.................................. 4-21

Removing a GPA/AIMM Card................................................................................. 4-21

4.10.4 AGP Card with a Type 2 Retention Mechanism.............................................. 4-22

Removing an AGP Card............................................................................................ 4-22

4.10.5 Standard AGP Expansion Card........................................................................ 4-23

Removing an AGP Card............................................................................................ 4-23

4.11 Processor....................................................................................................................... 4-24

4.12 System Board................................................................................................................4-26

4.13 Battery .......................................................................................................................... 4-27

4.14 Power Supply................................................................................................................4-28

4.15 Chassis Fan................................................................................................................... 4-29

chapter 5

Connectors & Jumpers

5.1 System Board.................................................................................................................. 5-1

5.1.1 Connectors and Jumpers .................................................................................... 5-1

5.1.2 Clearing CMOS.................................................................................................. 5-2

5.1.3 Disabling or Clearing the Power-On and Setup Passwords ............................... 5-3

5.2 Hard Drive Jumper Settings............................................................................................ 5-4

5.2.1 Seagate, Quantum, and Western Digital ............................................................ 5-4

5.2.2 Maxtor................................................................................................................ 5-5

Contents v

chapter 6

Specifications

6.1 Specifications.................................................................................................................. 6-1

6.1.1 System................................................................................................................ 6-1

6.1.2 System Interrupts ............................................................................................... 6-2

6.1.3 System DMA...................................................................................................... 6-2

6.1.4 ICH Fixed I/O Registers..................................................................................... 6-3

6.1.5 System Memory Map......................................................................................... 6-5

6.2 Drives.............................................................................................................................. 6-6

6.2.1 1.44-MB Diskette Drive..................................................................................... 6-6

6.2.2 Ultra ATA Hard Drives...................................................................................... 6-7

6.2.3 CD-ROM Drives................................................................................................ 6-8

6.3 Compaq Keyboards ........................................................................................................ 6-9

6.4 Mouse ............................................................................................................................. 6-9

6.5 Supported Graphics Resolutions................................................................................... 6-10

6.5.1 Intel 3D Graphics............................................................................................. 6-10

6.5.2 nVIDIA M64 Pro ............................................................................................. 6-10

6.5.3 Vanta LT.......................................................................................................... 6-10

Index

......................................................................................................................................................I-1

Compaq Deskpro EX 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 used

for reference when servicing the Compaq Deskpro EX Series of Personal Computers.

Only authorized technicians trained by Compaq should attempt to repair this equipment.

Compaq Computer Corporation reserves the right to make changes to 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.

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 Service Reference Guide

■ Compaq Quick Troubleshooting Guide

Compaq Deskpro EX Series of Personal Computers 1-1

chapter

1

P

RODUCT

D

ESCRIPTION

This chapter describes the model offerings and features of the desktop model of the

Compaq Deskpro EX Series of Personal Computers.

1-2 Product Description

1.1 Product Features

Compaq Deskpro EX Series of Personal Computers Desktop 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

1

Dual-State Power Button

6

CD-ROM Drive Busy Indicator*

2

Power-On Light

7

CD-ROM Eject Button*

3

Drive Activity Light**

8

Diskette Drive Activity Light

4

Stereo Headphone Jack

9

Diskette Eject Button

5

Headphone Volume Control

*CD-ROM models only.

**Flashes when an ATAPI device, such as the hard drive, is active.

Compaq Deskpro EX 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 the

computer to any USB peripheral

while the computer is operating; is

a fully functional Plug and Play

connector)

8

Serial Connector

4

Serial Connector

9

Line-In Audio Connector

5

Parallel Port Connector

:

Microphone Connector

1-4 Product Description

1.1.3 Drive Positions

Reference Configuration

1

Two standard 5.25-inch, half-height bays for optional drives

2

One standard 3.5-inch, 1.44-MB diskette drive

3

One standard 3.5-inch, side mounted hard drive

To verify the type and size of the mass storage devices installed in the computer, run F10

Compaq Computer Setup.

Compaq Deskpro EX Series of Personal Computers 1-5

1.2 Serial Number Location

The serial number and model information label is located on the side of the unit 1. A

second 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

must then be reentered through Computer Setup. Refer to the Software Reference

Guide for more information.

CAUTION: A system board borrowed from another computer is recognized as a valid serial

number and will create a mismatch between the serial number label and the electronic serial

number.

The computer serial number should be provided to Compaq when requesting information

or ordering spare parts.

Compaq Deskpro EX Series of Personal Computers 2-1

chapter

2

S

PARE

P

ARTS

The chapter provides an illustrated parts breakdown and a reference for spare parts for the

desktop model.

2.1 System Unit

Description

Spare Part

Number

Warranty

Tier

1 Computer cover Not spared

2 Chassis/basepan Not spared

3 Power supply 201829-001 B

4 Front bezel 213434-001 D

2-2 Spare Parts

2.2 Mass Storage Devices

Description

Spare Part

Number

Warranty

Tier

1 Diskette drive, 3.5-inch, buttonless, opal 210795-001 B

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.

2.3 Cables

Description

Spare Part

Number

Warranty

Tier

1 LED/power cable, 21” 222039-001 D

2 CD audio cable 149806-001 D

3 Dual connection cable, CD/hard drive, 18” 215392-001 D

4 Diskette drive cable, 15.5” 161735-001 D

*Not shown

Compaq Deskpro EX Series of Personal Computers 2-3

2.4 Standard, Memory, and Expansion Boards

Description

Spare Part

Number

Warranty

Tier

1 Nvidia M64 16MB SDRAM AGP Card 182757-001 B

5 AIMM (GPA) 4MB, 133MHz Graphics Card 192012-001 B

* Vanta LT 8MB SDRAM Graphics Card 201827-001 B

* Mitac/Nvidia NV-15, 32MB Graphics Card 180284-001 B

Memory Module (SDIMM, 133 MHz)

2 64 MB 170080-001 B

* 128 MB 170081-001 B

* 256MB 192014-001 B

Intel Pentium III Processor

3 566/66 MHz with heatsink (191832-002) and clip (223575-007) 203967-001 B

3 600/66 MHz with heatsink (191832-002) and clip (223575-007) 192011-001 B

3 667/133 MHz with heatsink (191832-002) and clip (223575-007)192007-001 B

3 700/66 MHz with heatsink (191832-002) and clip (223575-007) 203968-001 B

3 733/133 MHz with heatsink (191832-002) and clip (223575-007)192008-001 B

* 800/133 MHz with heatsink (191832-002) and clip (223575-007)192009-001 B

*

866/133 MHz with fansink (191845-002). Fansink includes fan,

heatsink, and clip.

192006-001 B

* 933/133 MHz with fansink (191845-002). Fansink includes fan,

heatsink, and clip.

203969-001 B

4 10/100 PCI Network Interface Card 188297-001 B

6 System Board 203966-001 B

*Not shown.

2-4 Spare Parts

2.5 Keyboards

Description

Spare Part

Number

Warranty

Tier

Easy Access Keyboard-US 123130-xxx D

Spacesaver, Opal 269513-xxx D

Dutch -331

Finnish -351

French -051

International -B31

Norwegian -091

Spanish -071

Swedish -101

UK -031

US -001

2.6 Miscellaneous Screw Kit

Description

Spare Part

Number

Warranty

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)

6-19 x .5/16 hi-top, taptite screw with captive washer (4 ea.)

(114399-069)

6-32 x 3/16 hi-top, thread-forming screw with serrations (5

ea.) (192308-003)

M3 x 5mm, hi-top, taptite screw with serrations (4 ea.)

(247348-001)

6-32 x 3/16 buttonhead tamper-resistant, taptite screw with

serrations (3 ea.) (296769-002)

6-32 x 5/16 hi-top, taptite screw (4 ea.) (109834-568)

6-19 x 1/2 Panhead, plastite screw (5 ea.) (101346-071)

Thumbscrew, molded cap (4 ea.) (179333-002)

Compaq Deskpro EX Series of Personal Computers 2-5

2.7 Miscellaneous Parts

Description

Spare Part

Number

Warranty

Tier

Mouse, scroll, opal 334689-002 D

Mouse, two-button, opal 166861-001 D

2.8 Shipping Boxes

Description

Spare Part Number

Return Kit 207742-001

2.9 Documentation and Software

Description

Spare Part Number

Maintenance & Service Guide 215877-001

Illustrated Parts Map 215878-001

Service Reference Guide 152611-001

Quick Troubleshooting Guide 153837-001

Compaq Deskpro EX 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 the

procedures and precautions described in this chapter is essential for proper service.

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.

3.1 Electrostatic Discharge Information

A sudden discharge of static electricity from your finger or other conductor can destroy

static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but

damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not be

affected at all and can work perfectly throughout a normal cycle. The device may function

normally for a while, then degrade in the internal layers, reducing its life expectancy.

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.

3.1.1 Generating Static

The following table shows that:

!

Different activities generate different amounts of static electricity.

! Static electricity increases as humidity decreases.

Relative Humidity

Event 55% 40% 10%

Walking across carpet 7,500 V 15,000 V 35,000 V

Walking across vinyl floor 3,000 V 5,000 V 12,000 V

Motions of bench worker 400 V 800 V 6,000 V

Removing DIPs* from plastic tube 400 V 700 V 2,000 V

Removing DIPs* from vinyl tray 2,000 V 4,000 V 11,500 V

Removing DIPs* from Styrofoam 3,500 V 5,000 V 14,500 V

Removing bubble pack from PCB 7,000 V 20,000 V 26,500 V

Packing PCBs in foam-lined box 5,000 V 11,000 V 21,000 V

*Dual Inline Packaging (DIP) is the packaging around individual microcircuitry.

These are then multi-packaged inside plastic tubes, trays, or Styrofoam.

✎

700 volts can degrade a product.

3-2 Removal & Replacement Preliminaries

3.1.2 Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure

determine the degree of sensitivity. The following proper packaging and grounding

precautions are necessary to prevent damage to electric components and accessories.

! To avoid hand contact, transport products in static-safe containers such as tubes,

bags, or boxes.

! Protect all electrostatic parts and assemblies with conductive or approved

containers or packaging.

!

Keep electrostatic sensitive parts in their containers until they arrive at static-free

stations.

! Place items on a grounded surface before removing them from their container.

! Always be properly grounded when touching a sensitive component or assembly.

! Avoid contact with pins, leads, or circuitry.

! Place reusable electrostatic-sensitive parts from assemblies in protective packaging

or conductive foam.

3.1.3 Personal Grounding Methods and Equipment

Use the following equipment to prevent static electricity damage to equipment:

!

Wrist straps are flexible straps with a minimum of one-megohm +/- 10%

resistance in the ground cords. To provide proper ground, a strap must be worn

snug against bare skin. The ground cord must be connected and fit snugly into the

banana plug connector on the grounding mat or workstation.

!

Heel straps/Toe straps/Boot straps can be used at standing workstations and are

compatible with most types of shoes or boots. On conductive floors or dissipative

floor mats, use them on both feet with a minimum of one-megohm +/- 10%

resistance between the operator and ground.

Static Shielding Protection Levels

Method Voltage

Antistatic plastic 1,500

Carbon-loaded plastic 7,500

Metallized laminate 15,000

3.1.4 Grounding Workstations

To prevent static damage at the workstation, use the following precautions:

! Cover the workstation with approved static-dissipative material. Provide a wrist

strap connected to the work surface and properly grounded tools and equipment.

! Use static-dissipative mats, foot straps, or air ionizers to give added protection.

! Handle electrostatic sensitive components, parts, and assemblies by the case or

PCB laminate. Handle them only at static-free workstations.

! Turn off power and input signals before inserting and removing connectors or test

equipment.

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