HP Deskpro EC User Manual

preface

About This Guide

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

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

Locating Additional Documentation........................................................................................viii

chapter 1

Product Description

1.1 System Design.................................................................................................................1-2

1.2 Computer Features.......................................................................................................... 1-2

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

1.2.2 Rear Panel Connectors........................................................................................1-3

1.3 Serial Number Location.................................................................................................. 1-4

chapter 2

Spare Parts

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

2.2 Mass Storage Devices.....................................................................................................2-4

2.3 Cables.............................................................................................................................. 2-5

2.4 System, Memory, and Expansion Boards........................................................................2-6

2.5 Keyboards .......................................................................................................................2-7

2.6 Miscellaneous Parts......................................................................................................... 2-8

2.7 Documentation................................................................................................................2-9

CONTENTS

chapter 3

Removal and Replacement Preliminaries and Routine Care

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..................................................................................... 3-3

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

3.2 Routine Care....................................................................................................................3-4

3.2.1 General Cleaning Safety Precautions.................................................................. 3-4

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

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

3.2.4 Cleaning the Monitor.......................................................................................... 3-5

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

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

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

3.3.2 Screws.................................................................................................................3-6

Contents iii

3.3.3 Cables and Connectors........................................................................................ 3-6

3.3.4 Hard Drives.........................................................................................................3-6

3.3.5 Plastic Parts.........................................................................................................3-6

3.3.6 Lithium Battery...................................................................................................3-6

chapter 4

Removal and Replacement Procedures

4.1 Preparation for Disassembly............................................................................................4-1

4.2 Hood................................................................................................................................ 4-2

4.3 Power Supply ..................................................................................................................4-3

4.4 Mass Storage Devices.....................................................................................................4-4

4.4.1 CD Drive ............................................................................................................4-5

4.4.2 Diskette Drive..................................................................................................... 4-7

4.4.3 Hard Drive..........................................................................................................4-9

4.5 Video Card.................................................................................................................... 4-11

4.6 Network Card................................................................................................................4-12

4.7 Fax/Modem Card...........................................................................................................4-13

4.8 DIMM...........................................................................................................................4-14

4.9 RTC Battery..................................................................................................................4-15

4.10 Processor....................................................................................................................... 4-16

4.11 Front Bezel....................................................................................................................4-17

4.12 On-Button Board........................................................................................................... 4-18

4.13 System Board Bracket................................................................................................... 4-19

4.14 System Board................................................................................................................4-21

4.15 I/O Panel .......................................................................................................................4-22

chapter 5

Connectors, Jumpers and Switches

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

5.1.1 Audio Connector s ............................................................................................... 5-1

5.1.2 Peripheral Interfaces and Indicators.................................................................... 5-2

5.1.3 Hardware Control............................................................................................... 5-4

5.1.4 Add-in Boards.....................................................................................................5-6

5.1.5 Front Panel Connector (J8F1)...........................................................................5-10

5.2 Jumpers.........................................................................................................................5-10

5.3 Switches........................................................................................................................ 5-11

5.4 Disabling or Clearing the Power-On and Setup Passwords........................................... 5-11

5.5 Pin Assignments for External Connectors..................................................................... 5-12

chapter 6

Specifications

6.1 System............................................................................................................................. 6-1

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

6.1.2 System DMA...................................................................................................... 6-1

6.1.3 System Interrupts................................................................................................ 6-2

6.1.4 System I/O..........................................................................................................6-2

6.1.5 System Memory Map .........................................................................................6-4

6.2 Drives..............................................................................................................................6-5

6.2.1 Ultra ATA Hard Drives...................................................................................... 6-5

6.2.2 Diskette Drive..................................................................................................... 6-6

6.2.3 32x CD-ROM Drive ...........................................................................................6-7

6.2.4 52x CD-ROM Drive ...........................................................................................6-8

iv Contents