Compaq Deskpro 4000N, Deskpro 4000S Maintenance & Service Manual

MAINTENANCE

& SERVICE GUIDE

Compaq Deskpro 4000N and 4000S

Network Personal Computers

Notice

The information in this guide is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR

TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN;
NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM
THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.

This guide contains information protected by copyright. No part of this guide may be
photocopied or reproduced in any form without prior written consent from Compaq
Computer Corporation.



1997 Compaq Computer Corporation.

All rights reserved. Printed in the U.S.A.
Compaq, Deskpro

Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.

The software described in this guide is furnished under a license agreement or
nondisclosure agreement. The software may be used or copied only in accordance with
the terms of the agreement.

Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.

Maintenance & Service Guide

Compaq Deskpro 4000S and 4000N Series of Personal Computers

Second Edition (August 1997)
First Edition (July 1997)
Part Number 288388-002
Spare Part Number 288457-001

Compaq Computer Corporation

CPS

preface

A

BOUT THIS GUIDE

This
reference when servicing the Compaq Deskpro 4000S and 4000N 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 the Compaq Deskpro 4000S
and 4000N Series of Personal Computers without notice.

Symbols and Conventions

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

!

Maintenance and Service 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.

is a troubleshooting and repair guide that can be used for

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

✎

instructions.

The following format conventions distinguish elements of the text throughout this guide:

■

Drive letters that are not in
drive A.

■

Folder or directory names that are not in command lines are presented in uppercase type as
shown here: DIRECTORY.

■

The file names are presented in uppercase italic type as shown here:

■

The names of commands are presented in lowercase as shown here:

■

Commands that are to be entered at the system prompt may be shown on a separate line:
a:\install

■

When you need to type information without pressing Enter, you are directed to “type” the
information.

■

When you need to type the information
information.

command

lines are presented in uppercase type as shown here:

FILENAME

install

and

press Enter, you are directed to “enter” the

.

or a:\install.

Preface vii

Technician Notes

WARNING:

!

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.

CAUTION:

at the front and back of the computer.

CAUTION:

AC power cord into a properly grounded AC outlet only.

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

To properly ventilate your system, you must provide at least 3-inches (7.6-cm) of clearance

The computer is designed to be electrically grounded. To ensure proper operation, plug the

System Serial Number

The serial number is located on the right side of the system unit cover on the bottom front.
For the purpose of AssetControl, the serial number is embedded in the CMOS on the system board.

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 Service Quick Reference Guide

viii Preface

chapter

P

RODUCT DESCRIPTION

This chapter describes the model offerings and features of the Compaq Deskpro 4000S and 4000N
Series of Personal Computers.

1

Figure 1-1.

Compaq Deskpro 4000S and 4000N Series Personal Computers

Compaq Deskpro 4000S and 4000N Personal Computers 1-1

1.1 Models

Table 1-1

Deskpro 4000S Models

Configuration
Code

BPC2 P55C/166 1.44-MB std n/a 2.1-GB 16-MB 256-MB 256-KB S3/KV2**
BPC3 P55C/166 1.44-MB std 20X max 2.1-GB 32-MB 256-MB 256-KB S3/KV2**
BPD2 P55C/200 1.44-MB std n/a 2.1-GB 16-MB 256-MB 256-KB S3/KV2**
BPD3 P55C/200 1.44-MB std 20X max 2.1-GB 32-MB 256-MB 256-KB S3/KV2**
BSL2 P55C/233 1.44-MB std n/a 2.1-GB 16-MB 256-MB 256-KB S3/KV2**
BSL3 P55C/233 1.44-MB std 20X max 2.1-GB 32-MB 256-MB 256-KB S3/KV2**
* P55C is an Intel Pentium Processor with MMX Technology.

**S3 Enhanced 64-bit Graphics.

Configuration
Code

BQZ3 P55C/166 1.6-GB 16-MB 256-MB 256-KB S3/KV2**
BQZ2 P55C/166 1.6-GB 32-MB 256-MB 256-KB S3/KV2**
BQ22 P55C/200 1.6-GB 32-MB 256-MB 256-KB S3/KV2**
BSS2 P55C/233 1.6-GB 32-MB 256-MB 256-KB S3/KV2**
*P55C is an Intel Pentium Processor with MMX Technology.

**S3 Enhanced 64-bit Graphics.

Processor/
Speed*

Diskette
Drive

Processor/
Speed* Hard Drive

CD-ROM
Drive

Hard
Drive

Standard
Memory

Table 1-2

Deskpro 4000N Models

Standard
Memory

Maximum
Memory

Maximum
Memory

Internal
Cache

Internal
Cache

Internal
Graphics

Internal
Graphics

1-2 Product Description

1.2 Features

Table 1-3

Features

Item Description

Processor

Speed, MHz

Cache

, capacity in Kb
L1 (P54C only)
L1 (P55C only)
L2 (write-through, direct mapped)

Architecture

CMOS RAM, battery backed
Plug and Play capability

Chipset
ROM BIOS
Memory

, non-parity, 66 MHz, SDRAM (without ECC)
Base, MB
Maximum, MB
Upgrade modules available, MB
DIMM sockets

Bays

Deskpro 4000S
Deskpro 4000N

Expansion slot

Deskpro 4000S
Deskpro 4000N

Diskette drive

Standard
Optional (replaces 1.44-MB drive)

Hard drive

Standard, EIDE with drive fault prediction
Optional, Ultra ATA with drive fault prediction*
Optional Ultra SCSI

CD-ROM drive
Audio

Enhanced Business Pro Audio
Compaq Multimedia Sound System

Graphics
Network interface

*Drives are for replacement purposes only.

, 3.5-inch drive bay (Deskpro 4000S only)

, capacity in GB

(Deskpro 4000S only) 20X max Slimline on select models

(Deskpro 4000S only)

, embedded on system board S3 Trio 64V2/GX Enhanced 64-bit Graphics with 2-MB memory

, embedded on system board Compaq Netelligent 10/100 TX Embedded UTP controller

Intel Pentium Processor with MMX Technology
166, 200, 233

16
32
256

PCI/ISA
242-byte
standard

VIA Apollo VP-2
Flash memory device

16 or 32
256
8, 16, 32, 64, 128
2

3.5-inch Internal/3.5-inch External/5.25-inch External Slimline

3.5-inch Internal

One 7-inch PCI/ISA combination
One 7-inch PCI

1.44-MB
120-MB (LS-120)

1.6 (Deskpro 4000N), 2.1 (Deskpro 4000S)

2.4, 4.3

2.1, 4.2

Optional
Optional

continued

Compaq Deskpro 4000S and 4000N Personal Computers 1-3

Table 1-2

Continued

Item Description

I/O ports, standard Serial (2)

Parallel
USB (2)
AUI
RJ-45
Monitor
Keyboard
Mouse

Power supply (2,000 volt surge suppressant capability) 76-watt, 115 VAC, 2.5 A/230 VAC, 1.25 A
Power supply fan Standard
Internal piezo speaker Standard
Internal battery Standard
Operating System

Deskpro 4000S

Deskpro 4000N

Intelligent Manageability features Asset Management

Two-button mouse Standard
Compaq Enhanced keyboard with MS Windows-specific keys Standard

Windows 95
Windows NT

Fault Management
Security Management
Configuration Management
Integration Management

1.3 Design Overview

The Compaq Deskpro 4000S and 4000N Series of Personal Computers are designed to use a pan­type chassis to house the system board, expansion boards, power supply, and mass storage devices.
The chassis is supplemented by a riser board attached to the expansion board cage. The expansion
board cage provides a mounting location for the expansion board.

All internal components are accessible when the hood, held in place by two latches, is removed.
Lifting the Easy Access Drive Bay and Easy Access Power Supply to their upright positions allows
full access to the system board. The front bezel is mounted to the front of the system unit cover. Torx
T-15 screws are used to secure the Easy Access Drive Bay hinge bar and the Easy Access Power
Supply hinge bracket.

The system board is easily removed from the chassis after the hood and expansion board cage are
removed. Details of the disassembly procedure are found in Chapter 5, “Removal and Replacement
Procedures.”

The removable expansion board cage mounts perpendicular to the system board. The expansion
board installation is horizontal into the cage and is secured with a single screw.

The Easy Access Power Supply is mounted in the right rear corner of the chassis and pivots using a
pair of built-in hinges. The AC input cord must be removed prior to disconnecting the power supply
from the system board.

1-4 Product Description

1.4 Preloaded Software

The following Compaq software is preloaded on the computer:

■

Partition-based Compaq Diagnostics utilities

■

Compaq Diagnostics for Windows

■

Compaq support software and device drivers

■

Online Safety & Comfort Guide

■

Intelligent Manageability

■

Power Management with Energy Saver features

■

Security Management

■

Remote Management Tools

■

Microsoft Windows 95 (Deskpro 4000S)

■

Microsoft Windows NT (Deskpro 4000N)

1.4.1 Ordering Additional Operating System Drivers

If you plan to run any of the following operating systems on the computer, you must install the
corresponding Compaq device drivers and utilities before attempting to use the computer:

■

IBM OS/2 or NetWare

■

Microsoft Windows 95 (for Deskpro 4000N)

■

Microsoft Windows NT (for Deskpro 4000S)

There are two methods to order copies of suitable device drivers and utilities:

■

Order the Support Software CD for Compaq Desktop Products. This compact disc contains the
latest device drivers, utilities, and flashable ROM images needed to run MS-DOS, Windows 3.1,
Windows 95, Windows NT 3.51 and 4.0, IBM OS/2, and NetWare on the Compaq commercial
desktop product.

■

Purchase backup diskettes.

The Support Software CD can be purchased in either of two ways:

■

A single CD-ROM that gives one-time access to the latest support software (North America
only).

■

A yearly subscription that delivers up to 12 monthly CD-ROMs.

The annual subscription provides continuous access to the latest developments, while the single CD­ROM offers information as it is needed.

Compaq Deskpro 4000S and 4000N Personal Computers 1-5

When calling Compaq to place an order, be sure to have the serial number of the computer

✎✎

available. The location of the serial number is shown in Chapter 5. This number is necessary for
all purchases.

1.4.2 Intelligent Manageability

Intelligent Manageability combines innovative hardware technology with PC LAN management
tools to make Compaq computers easier to inventory, troubleshoot, protect, and maintain. Intelligent
Manageability features focus on:

Asset Management

■

Fault Management

■

Security Management

■

Configuration Management

■

Integration Management

■

Asset Management

AssetControl, a feature of Asset Management, reduces the time and cost associated with the physical
inventory of personal computers, key components, and monitors. AssetControl, hardware designed
and built into new Compaq personal computers, key components, and monitors, support the VESA
DDC2B, DIMM SPD, and EDID standards. AssetControl features:

Provide detailed information about various components, including:

■

❏

Manufacturer, model, and serial number of Compaq computers, monitors, hard drives, and
dual inline memory modules (DIMMs)

❏

Asset Tag

❏

System board and ROM revision level

❏

DMI BIOS

Allow you to view, print, or electronically save this date, and other system configuration details

■

using:

❏

Enhanced Compaq Insight Personal Edition

❏

Compaq Insight Manager

❏

PC LAN management products from the Compaq Desktop Management Solutions

❏

Management software product supporting the Desktop Management Interface Revision 2.0
(DMI 2.0)

Simplify and help ensure the accuracy of inventory and accounting procedures.

■

Streamline service calls by giving the administrator fast access to the Compaq personal computer

■

configuration and history
Remote software distribution procedures

■

1-6 Product Description

Fault Management

Fault management features combine innovative hardware and software technology to prevent the loss
of critical data and minimize unplanned downtime. When a fault occurs, the computer displays a
Local Alert message containing a description of the fault and any recommended actions. You can
then view current system health by using Compaq Insight Personal Edition. If the computer is
connected to a network managed by Compaq Insight Manager or other SNMP-based management
products, the computer also sends a fault notice to the network management application.

Fault Management features:

■

ECC fault prediction and prefailure warranty (with optional ECC memory only). ECC Fault
Prediction provides an alert when the computer encounters an excessive number of error
checking and correcting memory errors. The Prefailure Warranty for ECC memory modules
allows you to replace modules with errors while within the Compaq three year warranty, before
the memory module fails.

■

SMART II hard drives fault prediction monitor hard drive activity to predict failures before they
occur. Fault prediction and failure indication parameters, such as abnormal variations in spinup
and seek times, or non-correctable read and write errors, are tracked to determine the hard drive
condition.

■

Monitor fault diagnosis detects when the operating temperature exceeds the normal range or
when a hardware fault occurs, such as power voltage or current out of range, horizontal or
vertical deflection, or I/O controller failure

■

Ultra ATA Integrity Monitoring observes the integrity of data as it is transferred between an
optional Ultra ATA hard drive and the system’s core logic

■

Integrated surge-tolerant power supply provides protection when the computer is hit with an
unpredictable power surge.

■

Temperature Monitoring is a hardware and software feature that tracks the internal temperature
of the computer.

Compaq Deskpro 4000S and 4000N Personal Computers 1-7

Security Management

Security management features are designed to deter unauthorized access to data and help prevent
theft of the computer:

■

Removable media boot control prevents startup from the removable media drives.

■

Removable media write control prevents writing to the removable media drives.

■

Serial, Parallel, or USB interface control prevents transfer of data through the integrated serial,
parallel, or USB interface.

■

Power-on password prevents the use of the computer until the password is entered. This can
apply to both initial startup and restarts.

■

QuickLock/QuickBlank allows the user to lock the keyboard and/or blank the screen.

■

Setup Password prevents unauthorized changes to the system configuration.

■

Cable lock provision allows the user to physically secure the computer hardware to protect
against theft.

■

Memory Change Alerts detects when DIMMS have been added, moved, or removed and notifies
the end-user and system administrator.

■

Ownership tag displays the ownership information as defined by the system administrator during
the systems startup.

Configuration Management

Configuration management features include:

■

Remote ROM flash allows the system administrator to upgrade the ROM on remote computers
from the centralized network management console.

■

The FailSafe Boot Block ROM allows for system recovery in the event of a ROM flash failure.

■

Remote Security Management allows the system administrator to set or modify security features
on remote Compaq Deskpro 4000S and 4000N computers, directly from the centralized network
management console.

■

Remote Wakeup and Remote Shutdown allow the system administrator to power on and power
off a computer from a remote location, supported by PC LAN management tools.

■

Replicated Setup allows the system administrator to copy one Setup Configuration to other
computers of the same model.

■

Advanced Configuration and Power Interface (ACPI)-ready hardware.

■

Dual-state power button may be configured as suspend button for a quick recovery from a low
power state and promotes decreased power usage.

■

Enhanced Support Software CD and World Wide Web Site offer rigorously tested software
developed by Compaq and third-party suppliers, and operating-system specific support software
for Compaq computers.

1-8 Product Description

■

Compaq Integrated Software include bundles of appropriate support software ready for
automated installation on top of an off-the-shelf Microsoft operating system. Integrated software
is available in two formats: the Support Software CD for Compaq Desktop, Portable, and
Workstation Products and the Compaq World Wide Web site.

■

Universal Driver Manager is a release that supports the different graphics solutions found on
Compaq Deskpro 4000S and 4000N products.

Integration Management

Integration Management features include:

■

Compaq Insight Manager allows the LAN administrator to remotely view AssetControl data,
configuration data, memory change alerts, NIC performance data, and contact information. This
tool also provides access to Fault Management Features of the Compaq Deskpro 4000S and
4000N Series of Personal Computers.

■

Compaq Management Solutions Partners Program ensures compatibility and integration of
AssetControl features with leading PC LAN management products. These products provide
remote access to the AssetControl features so that LAN and PC administrators can manage
Compaq Deskpro 4000S and 4000N Series of Personal Computers information from a central
location.

Power Management

Power management features are listed below.

Table 1-4

Power Management

Feature Feature

APM support Hard disk “idle” mode
CD-ROM and audio board* support “power-down” Screen blanking
Dual State Power Button System “idle” mode
Energy Star compliant

*The audio board is optional equipment for the Deskpro 4000S only.

Compaq Deskpro 4000S and 4000N Personal Computers 1-9

1.5 External Computer Features

The Compaq Deskpro 4000S and 4000N Series of Personal Computers ship with a mouse and
keyboard. A Compaq color monitor or other compatible monitor, which is also required to operate
the computer, must be purchased separately.

1.5.1 Front Panel Controls and LEDs

Figure 1-2.

Front Panel Controls and Lights Deskpro 4000S

Table 1-5

Lights and Controls

Ref. Component Ref. Component

➊ Power Switch ➍ CD-ROM Drive*
➋ Diskette Drive Activity Light* ➎ Hard Drive Activity Light
➌ Diskette Eject Button* 6 Power-On Light

*Deskpro 4000S models only.

The lights on the computer provide information about computer operation. When the power switch

1

is turned on, the power-on light 6 is green.

is on, the drive is either reading information

When the hard drive light 5 or diskette drive light
from the disk or storing information on the disk.

➋

1-10 Product Description

1.5.2 Drive Positions

Figure 1-3.

Drive Positions on the Compaq Deskpro 4000S Computer

Table 1-6

Drive Positions

Drive Configuration

1 Standard 3.5-inch, third-height, 1.44-MB diskette drive*
2 5.25-inch drive bay for optional Slimline CD-ROM drive only*
3 Standard hard drive (3.5-inch, third-height)

*Deskpro 4000S models only.

To verify the type, size, and capacity of the mass storage devices installed in the computer, run the
View System Information (INSPECT) utility available at computer startup. Refer to Chapter 2,
"Compaq Utilities," for more information.

Compaq Deskpro 4000S and 4000N Personal Computers 1-11

1.5.3 Rear Panel Connectors and Indicators

Figure 1-4.

Rear Panel Connectors and Indicators

Table 1-7

Rear Panel Connectors and Indicators

Ref. Component Ref. Component

1 Voltage Select Switch 7 Parallel Connector
2 Ethernet RJ-45 Activity Lights 8 Serial Connector
3 AUI Connector 9 Ethernet RJ-45 Connector
4 Mouse Connector : Keyboard Connector
5 Power Cord Connection ; Monitor Connector
6 Universal Serial Bus (USB) Connector

Connectors are color-coded and include icons for ease of identification.

1-12 Product Description

1.6 Enhanced Keyboard

Figure 1-5.

Enhanced Keyboard

Table 1-8

Keyboard Features and Functions

Ref. Key Function

1 Ctrl Used in combination with another key, its effect depends on the software application

you are using.

2 Windows Logo Keys Opens the Windows Start menu. Used in combination with another key, its effect

depends on the software application you are using.

3 Alt Used in combination with another key, its effect depends on the software application

you are using.

4 Windows Application Key Opens a context menu for the software program you are using.

Compaq Deskpro 4000S and 4000N Personal Computers 1-13

The keyboard has feet on the bottom that enable the user to tilt the keyboard to a more comfortable
typing angle.

Figure 1-6.

Keyboard Tilt Foot

1.7 Select Options

Select options that are available from Compaq for the Compaq Deskpro 4000S and 4000N Series of
Personal Computers are described briefly in the following sections.

1.7.1 Monitors

■

QVision 210 Color Monitor*

■

Compaq 140 Color Monitor*

■

Compaq 141 Color Monitor*

■

Compaq P50 Color Monitor

■

Compaq P70 Color Monitor

■

Compaq P110 Color Monitor

■

Compaq V50 Color Monitor*

■

Compaq V70 Color Monitor

■

Compaq V90 Color Monitor

■

Compaq TFT500 Flat Panel Display

*Not available in all locations

1-14 Product Description

1.7.2 Modems

■

33.6-K Modem

■

56-K Modem (NA only)

■

SpeedPaq ISDN Modem

■

Compaq Netelligent Corporate Communicator (NA only)

Compaq Deskpro 4000S and 4000N Personal Computers 1-15

chapter

C

ONFIGURATION AND

D

IAGNOSTIC UTILITIES

This chapter contains descriptions of Compaq utilities that can be helpful when servicing the
Compaq Deskpro 4000S and 4000N Personal Computers. These utilities include:

■

Configuration and Diagnostics

■

ROMPaq

■

Compaq Intelligent Manageability

■

Compaq Insight Manager

■

NT Support Software Diskette
See Appendixes D, E, and F for error codes, error messages, and other troubleshooting techniques.
The Configuration and Diagnostics utilities are located on a hard disk partition on the computer.

These utilities include Create a Diagnostics Diskette, Setup, TEST, and INSPECT.

2

You can run Configuration and Diagnostics from diskette, or use the
a system partition containing Configuration and Diagnostics utilities.

Use the Compaq Configuration and Diagnostics utilities in the following instances:

■

When a system configuration error is detected during the Power-On Self-Test (POST).

■

To change factory default settings for some of the computer features.

■

To change the system configuration, which is sometimes necessary when you add or remove

optional hardware.

■

To set system configuration features.

Support Software CD

to install

2.1 Getting Ready

2.1.1 Preparing the Computer

If you encounter an error condition, complete the following steps before starting problem isolation
procedures:

1. Ensure proper ventilation. The computer should have a 3-inch (7.6-cm) clearance at the back of

the system unit.

2. Turn off the computer and peripheral devices.

Compaq Deskpro 4000S and 4000N Personal Computers 2-1

CAUTION: Always ensure that the power is off before disconnecting or reconnecting the mouse,

keyboard, or any other peripheral devices. Disconnecting or connecting any peripheral devices while the

unit power is on can damage the system board.

3. Disconnect any peripheral devices other than the monitor and keyboard. Do not disconnect the
printer if you want to test it or if you want to use it to log error messages.

4. Install loop-back and terminating plugs for complete testing.

5. Turn the computer on.

6. Create a diagnostics diskette (Section 2.1.2).

If you are using a Deskpro 4000N, you may either download the diagnostics program from a

✎

second computer onto the hard drive of the 4000N or run diagnostics from that second
computer.

7. Run the computer PC Diagnostics program.

2.1.2 Create a Diagnostics Diskette

Before beginning any diagnostics procedure, Compaq strongly recommends that you make a backup
copy of the diagnostics software as soon as possible.

Deskpro 4000S

The Create a Diagnostics Diskette allows you to back up the diagnostics software preinstalled on
your computer onto diskette. This utility is not available in Compaq Diagnostics for Windows; it
must be accessed through the Compaq Utilities menu.

Deskpro 4000N

This feature is not available in the Deskpro 4000N.

2-2 Configuration and Diagnostic Utilities

2.1.3 Accessing the Configuration and Diagnostics Menu

You can access the Configuration and Diagnostics utilities at startup from the hard drive or from the
diskettes. Procedures for both methods are presented below. Both procedures display the
Configuration and Diagnostics menu.

Accessing the Configuration and Diagnostics Menu at Startup

To access the Compaq Utilities menu at startup, complete the following steps:

1. Turn on or restart the computer.

2. Press F10 when the message displays in the lower-right corner of the screen.
If you do not press the F10 key while the message is displayed, you must turn the computer off,

✎

then on again and press F10 when it appears. You may also restart the computer using the
Ctrl+Alt+Del key combination to access the F10 message.

3. Press Enter to bypass the title and welcome screens. The Compaq Utilities menu appears.

The Compaq Utilities menu offers the following options:

❏

Create a Diagnostics Diskette (Deskpro 4000S only)

❏

Computer Setup

❏

Computer Checkup (TEST)

❏

View System Information (INSPECT)

❏

Exit

Accessing the Configuration and Diagnostics Menu from a Diskette

You can load either the Computer Setup or Diagnostics diskette with this procedure.

Deskpro 4000S

To load either of the diskettes, complete the following steps:

1. Insert the diskette into drive A.

2. Turn on or restart the computer. If Windows 95 is running, select Start, Shut Down, Restart the

computer.

3. If prompted, select the desired language.

4. Press Enter at the Welcome to Compaq Utilities Screen.

5. If you load the Diagnostics diskette, a menu listing is displayed. Use the arrow keys to select the

desired menu item.
If you select Computer Setup from this menu, you are prompted to insert the Setup diskette. You

are prompted through any procedure that you select.

Compaq Deskpro 4000S and 4000N Personal Computers 2-3

Deskpro 4000N

To load either of the diskettes, complete the following steps:

1. Turn off the Deskpro 4000N.

2. Connect a second computer to the Deskpro 4000N using only a null modem cable connected to
the serial ports on the rear panels of both computers.

3. Turn on the second computer, start Win 95 or Win NT, and insert the proper diskette into the
diskette drive of that computer.

In order to use the second computer’s diskette drive as an external diskette drive on the Deskpro

✎

4000N, optional Floppy Drive Server (FDS) software must be installed and running on the
second computer. The software may be downloaded from the Compaq World Wide Web Site
(www.compaq.com).

4. Turn on the Deskpro 4000N.

5. If prompted, enter the Setup password.

2.1.4 Managing the Diagnostics Partition

This option allows you to create, delete, or upgrade the diagnostics software on your computer. This
must be performed from a Diagnostics diskette.

A diagnostics partition is installed on the primary hard drive at the factory. If the partition is to be
created on a newly installed primary hard drive, it must be done before DOS is installed to make it
bootable during POST.

Deskpro 4000S

To perform any diagnostic partition activity complete the following steps:

1. Insert the Compaq Diagnostics diskette into the diskette drive.

2. Reboot the computer (Ctrl+Alt+Del), or turn the power off and then on. At this point, the
Language Screen appears, listing the languages on the diskette.

3. Select the desired language. The Welcome screen then appears. Pressing Ctrl+A at this screen
loads the Advanced Diagnostics.

4. Follow the screen instructions to display the Configuration and Diagnostics menu.

5. Select the Manage Diagnostics Partition from the menu.
The screen will present the Manage Diagnostics Partition menu.

6. Select the desired partition activity (Create, Upgrade, or Delete) and follow the screen prompts to
complete the tasks.

2-4 Configuration and Diagnostic Utilities

CAUTION: Creating a Diagnostics Partition involves performing a low-level format on the hard drive. This

is normally only done to add diagnostics to a new replacement hard drive. If the diagnostics software is
deleted, you will no longer be able to access the Configuration and Diagnostics menu.

Deskpro 4000N

If this is a Deskpro 4000N, refer to Section 2.1.3 for use of a diskette drive, then follow the
procedure above.

2.2 Computer Setup

Computer Setup is used to configure Compaq PCI- or ISA-based computers and is selected from the
Configuration and Diagnostics Menu. It is preinstalled on the hard drive and is also available on
diskette. Setup gives a snapshot of the computer's hardware configuration, aids in troubleshooting,
and allows you to set custom features. Computer Setup recognizes a newly installed internal or
external device and automatically updates the Computer Setup screen.

To run Setup, complete the following steps:

1. From the Configuration and Diagnostics menu, select the Computer Setup option.
A Setup screen is displayed. It may take a few minutes for the computer to generate this

information.
The screen lists the hardware that is configurable in the configuration memory and that is

currently used by the system with the exception of a tape drive. Alongside each option is a
summary of the current configuration.

You may display or reconfigure any of the detailed information provided.

2. Use the arrow keys to select menu items, the tab button to select buttons, and the Enter key to
select the desired items.

3. After making the desired change, select OK to save the change and return to the Computer Setup
menu.

Compaq Deskpro 4000S and 4000N Personal Computers 2-5

The Computer Setup screen includes two buttons: Built-In Devices and Add-In Devices. The
following tables list the options available under each of the two buttons:

Table 2-1

Built-In Devices

Sub-Menu Button Configuration Option Sub-Menu Button Configuration Option

Video Driver and Resolution System Information Processor
Storage Diskette Drive* System Parameters

Removable Media* Bus Priority
IDE Devices Quick Boot
SCSI Devices POST Messages
Boot Order Date/Time

Input devices Keyboard Communications Serial Ports

Mouse Parallel Port
Game Port Power Management Energy Save

Security Management Power-On Password Power Button Mode

Setup Password
USB

*Deskpro 4000S models only.

Add-In Devices

Sub-Menu Button Description or Function

ISA Boards* Lists installed ISA boards.

Allows you to Add or Remove boards and to View or Edit board information.

PCI Boards Lists installed PCI boards.

Allows you to View or Edit board information.

*Deskpro 4000S models only.

Table 2-2

2-6 Configuration and Diagnostic Utilities

2.2.1 Security Features

Table 2-3

Built-In Devices Security Features

Configuration Option Description or Function

Power-On Password Allows you to enable power-on password.

Allows you to specify prompting for power-on password.
Allows you to enable Network Server Mode, which allows for restarting of computer

from hard drive or network when the keyboard is disabled.

QuickLock/QuickBlank Allows you to enable QuickLock/QuickBlank.

(To maintain the security of QuickLock/QuickBlank, you must also disable the USB
ports.)

Setup Password Allows you to enable setup (administrator) password, controlling access to the

computer.

USB Allows you to disable USB ports.

Table 2-4

Built-In Devices Communications

Configuration Option Description or Function

Serial Ports Lists available serial ports and settings.

Allows you to disable serial ports by selecting Disable from the resources list.

Parallel Port Lists available parallel port and settings.

Allows you to disable serial ports by selecting Disable from the resources list.

Establishing a Password in Windows 95

To establish a password in Windows 95, complete the following steps:

1. Click the My Computer icon.

2. Click the Control Panel folder.

3. Double-click the Passwords icon and follow the instructions to set a new password.

Compaq Deskpro 4000S and 4000N Personal Computers 2-7

Establishing a Power-On Password Using Computer Setup

Establishing a power-on password through Computer Setup prevents access to the computer when
power is turned on, unless the password is entered. The password must be entered each time the
computer is turned on, when the key icon (
password through Computer Setup, complete the following steps:

1. Turn on the computer.

2. When the message appears in the lower-right corner of the screen, press F10.
The message displays in the lower-right corner of the screen for approximately two seconds. If

✎

you do not press F10 during this time, you must turn the computer off, then on again to access
the utility. You may also restart the computer using the Ctrl+Alt+Del key combination.

3. Press Enter to bypass the welcome screens and display the main menu.

4. From the main menu, select Computer Setup, and press Enter.

5. Select Built-In Devices, then select the Security Management feature.

6. Locate the power-on password option and follow the instructions provided to enable it.

7. Save the configuration and exit the utility.

) appears on the monitor. To establish a power-on

Entering a Power-On Password

To enter the power-on password, complete the following steps:

1. Turn on the computer.

2. When the key icon (
Type carefully; for security reasons, the characters you type do not appear on the screen.

✎

If you enter the password incorrectly, a broken key icon (
unsuccessful tries, you must turn off the computer, then turn it on again before you can continue.

) appears on the monitor, enter your current password.

) appears. Try again. After three

Changing a Power-On Password

To change the password, complete the following steps:

1. Turn on the computer.

2. When the key icon (

character, your new password, another slash (/) or alternate delimiter character, and your new
password again as shown:

current password/new password/new password

Refer to Table 2-5, “National Keyboard Delimiter Characters,” for information about the

✎

alternate delimiter characters.

) appears, type your current password, a slash (/) or alternate delimiter

For security reasons, the characters you type do not appear on the screen.
Completing this procedure causes the new password to take effect the next time you turn on the

computer.

2-8 Configuration and Diagnostic Utilities

Deleting a Power-On Password

To delete the password, complete the following steps:

1. Turn on the computer.

2. When the key icon (

) appears, type your current password followed by a slash (/) or alternate

delimiter character as shown:

current password/

Refer to Table 2-5, “National Keyboard Delimiter Characters,” for information about alternate

✎

delimiter characters.

Completing this procedure deletes the password until you establish a new one through Security
Management.

National Keyboard Delimiter Characters

Each keyboard is designed to meet country-specific requirements. The syntax and keys that you use
for changing or deleting your password depend on the keyboard that came with your computer.

To determine the delimiter key required for changing or deleting your password, find your keyboard
in the table below:

Table 2-5

National Keyboard Delimiter Characters

Arabic / Greek - Slovakian ­Belgian = Hungarian - Spanish ­BHCSY* - Italian - Swedish/Finnish /
Brazilian / Japanese / Swiss ­Chinese / Korean / Taiwanese /
Czech - Latin American - Thai /
Danish - Norwegian - Turkish .
French ! Polish - U.K. English /
French Canadian é Portuguese - U.S. English /
German - Russian /

* For Bosnia-Herzegovina, Croatia, Slovenia, and Yugoslavia

Compaq Deskpro 4000S and 4000N Personal Computers 2-9

Disabling the Passwords

If you do not know the power-on password, you may bypass it and the setup password by setting the
SW1-S1 switch on the system board to the ON position. To establish new passwords, set the S1
switch to the OFF position, clear CMOS, and go to F10 Setup.

Figure 2-1.

Locating the Password Switch

2-10 Configuration and Diagnostic Utilities

2.2.2 QuickLock/QuickBlank

The QuickLock and QuickBlank features can disable the keyboard and mouse interfaces and blank
the screen while an application is open. The feature is enabled with a power-on password. If
QuickBlank is also enabled, the screen blanks. When this feature is used, the computer is secure until
you enter the power-on password.

QuickLock and QuickBlank are enabled through Security Management. The keyboard and mouse
interface can be disabled and the screen blanked from within an application. Entering a QuickLock
key combination (Ctrl+Alt+L) disables the keyboard and the mouse interface. If QuickBlank is not
activated, the application remains in view on the screen, but it cannot be accessed.

To enable the QuickLock and QuickBlank features from the Configuration and Diagnostics Menu,
complete the following steps:

1. Turn on the computer.

2. When the message appears in the lower-right corner of the screen, press F10.
The message displays in the lower-right corner of the screen for approximately 2 seconds. If

✎

the user does not press F10 during this time, turn the computer off, then on again to access the
utility.

3. Press Enter to bypass the welcome screens and display the main menu.

4. From the main menu, select Computer Setup and press Enter.

5. Select Built-In Devices and press Enter.

6. Select the Security Management feature, and press Enter.

7. When the steps in the Security Management screen display, select Enable QuickLock of the

Keyboard.

8. Select QuickLock and/or QuickBlank.

9. Select OK to save the configuration.

10. On the Main screen, select Save and exit from the File menu.

To make use of the keyboard and mouse interface, see the information that follows.
Once in an application, enter the QuickLock key combination (Ctrl+Alt+L). The keyboard and

mouse (or other input device connected to the mouse connector) are disabled. The application cannot
be accessed at this time, but remains in view, unless the QuickBlank feature was also enabled
through the Configuration utility.

To enable the keyboard and input device connected to the mouse connector, enter the password.

For security reasons, the characters you type do not appear on the screen. The application will

✎✎

not be affected by the characters typed.
To ensure security with QuickLock/QuickBlank it is recommended that you also disable the

USB ports.

Compaq Deskpro 4000S and 4000N Personal Computers 2-11

2.3 Computer Checkup (TEST)

Computer Checkup (TEST), the primary diagnostics utility, confirms whether the various computer
devices are recognized by the system and are functioning properly. Use the TEST utility to help set
up tests, to test the computer, and to install the operating system. You may also use TEST in the
following instances:

■

To determine if all devices are recognized by the system and functioning properly. Running
TEST is optional, but recommended, after you install or connect a new device.

■

To save, print, or display the information generated by TEST. It is recommended that you run
TEST and have the printed report available before placing a call to the Compaq Customer
Support Center.

■

To assist your Compaq authorized dealer, reseller, or service provider in analyzing the system by
allowing the service provider to reproduce the same environment on another computer for
testing.

To run Computer Checkup (TEST), complete the following steps:

1. Turn on all of the external devices. You may wish to leave the printer connected to log error
messages.

2. Access the Compaq Utilities menu.

3. From the Compaq Utilities menu, select Computer Checkup (TEST).

4. When the test option menu appears, select the option to view the device list.

5. Verify that TEST correctly detected the devices installed.

This utility will detect all devices manufactured by Compaq; devices from other manufacturers

✎

may not be detected.

❏

If the list is correct, select OK and go on to step 6.

❏

If the list is incorrect, be sure that any new devices are installed properly. If you do not find
an installation problem, call your Compaq authorized dealer, reseller, or service provider.

6. Select one of the following from the test option menu:

Quick Check Diagnostics—This option runs a quick, general test on each device with a

❏

minimal number of prompts. If errors occur, they are displayed when the testing is complete.
Automatic Diagnostics—This option runs unattended, maximum testing of each device with

❏

minimal prompts. You can choose how many times to run the tests, to stop on errors, or to
print or file a log of errors.

Prompted Diagnostics—This option allows maximum control over the device testing

❏

process. You can choose attended or unattended testing, decide to stop on errors, or choose to
print or file a log of errors.

2-12 Configuration and Diagnostic Utilities

7. Follow the instructions on the screen as the diagnostic tests are run on the devices. When the
testing is complete, the screen displays the test option menu again.

When running TEST, record any error message numbers and have them available when you

✎

contact your Compaq authorized dealer, reseller, or service provider for assistance.

8. Exit to the Compaq Utilities menu.

2.4 View System Information (INSPECT)

Use View System Information (INSPECT) in the following instances:

■

To view information about the system once it has been configured.

■

To save, print, or display the information generated by INSPECT. It is recommended that you
run INSPECT and have the printed report available before placing a call to the Compaq
Customer Support Center.

■

To assist your Compaq authorized dealer, reseller, or service provider in analyzing the system by
allowing the service provider to reproduce the same environment on another computer for
testing.

INSPECT provides the following information about the system's operating environment:

■

Contents of the operating system startup files

■

Memory

■

ROM versions

■

Type of processor and coprocessor

■

Types of drives installed

■

Active printer and communications interfaces

■

Type of modem installed

■

Graphics details

■

Keyboard

■

Windows files

■

Network status

To run INSPECT, complete the following steps:

1. From the Configuration and Diagnostics menu, select the View System Information (INSPECT)
option.

After the hardware configuration has been identified, the INSPECT menu appears.

Compaq Deskpro 4000S and 4000N Personal Computers 2-13

2. Use the arrow keys to select the desired option listed below.

❏

Print the inspect status.

❏

Save the inspect status to a file.

❏

Add comments to a parameter status.

❏

Exit the utility.

3. When the print or save menu appears, use the arrow keys to move within the menus and select
the desired items using the space bar.

Follow the screen prompts to print or save the information.

4. When the Add Comments menu appears, type in the desired information and follow the screen
prompts.

5. You may view detailed information about any of the devices by using the cursor to highlight any
device and pressing ENTER.

6. Follow the screen prompts to exit the utility.

2.5 Compaq Enhanced Insight Personal Edition (Diagnostics for Windows)

Compaq Enhanced Insight Personal Edition (Compaq Diagnostics for Windows) utility contains the
same functionality as the partition-based INSPECT program, but in a Windows environment. To use
the Compaq Diagnostics for Windows utility in Windows 95, select the Compaq Diagnostics icon
from the Control Panel.

Once the program is running, you can use the tool bar or the menus to browse through the
information. Some examples of the information you can view are:

Product name

■

CPU information

■

Cache size and type

■

Memory

■

Mouse driver versions

■

COM ports, LPT ports, modems

■

ISA and PCI slot information

■

Version of certain software

■

ROM version

■

Storage information

■

Power Management settings

■

Multimedia devices information

■

2-14 Configuration and Diagnostic Utilities

2.6 Exiting the Compaq Utilities Menu

To exit the Compaq Utilities menu, follow the instructions on the screen prompts.

2.7 Power-On Self-Test (POST)

POST is a series of diagnostic tests that run automatically when the system is turned on.
Clean Boot surpresses most system messages during POST, such as memory count and non-error text

messages. If a POST error occurs, the screen will display the error message. To manually switch to
Descriptive mode during POST, press any key except F10.

Descriptive Boot shows all system messages during POST. To see the system messages every time
the computer is started, reconfigure the computer to the Descriptive Boot mode using Computer
Setup.

POST checks the following assemblies to ensure that the computer system is functioning properly:

■

Keyboard

■

System board

■

Memory modules

■

Video

■

Diskette drives

■

Hard drives

■

Power supply

■

Controllers

If POST finds an error in the system, an error condition is indicated by an audible and/or visual
message. Refer to Appendix E for POST error messages and recommended courses of action.

Compaq Deskpro 4000S and 4000N Personal Computers 2-15

2.8 ROMPaq

The Compaq Deskpro 4000S and 4000N Personal Computers come with reprogrammable Flash
ROM (Read Only Memory). Flash ROM Lock, set to its default setting of OFF, protects the Flash
ROM from being upgraded and the System BIOS from being updated.

To update the ROM, order the ROMPaq diskette from Compaq or download it from the Compaq
World Wide Web site.

2.8.1 Deskpro 4000S

To upgrade the ROM, complete the following steps:

1. Insert the ROMPaq diskette into the diskette drive.

2. Turn on the computer.

CAUTION:

protected and unauthorized updates can occur. The setup password is disabled when the computer is
shipped from the factory.

3. If prompted, enter the setup password.

4. If the setup password is entered correctly, the ROMPaq utility takes over and runs the flash ROM
upgrade.

If the setup password is entered incorrectly, the procedure terminates and no changes are made

✎

to the ROM.

CAUTION:

corrupt the upgrade and will require recovery using the FailSafe Boot Block ROM.

5. When the utility has finished upgrading the ROM, remove the diskette from the diskette drive
and reboot the computer.

If the computer does not have a setup password enabled, then the ROM is not write-

Do not turn the power off during a firmware upgrade. A loss of power during upgrade will

2-16 Configuration and Diagnostic Utilities

2.8.2 Deskpro 4000N

To upgrade the ROM, complete the following steps:

1. Turn off the Deskpro 4000N.

2. Connect a second computer to the Deskpro 4000N using only a null modem cable connected to
the serial ports on the rear panels of both computers.

3. Turn on the second computer, start the Win 95 or Win NT, and insert the ROMPaq diskette into
the diskette drive of that computer.

In order to use the second computer’s diskette drive as an external diskette drive on the Deskpro

✎

4000N, optional Floppy Drive Server (FDS) software must be installed and running on the
second computer. The software may be downloaded from the Compaq World Wide Web Site
(www.compaq.com).

4. Turn on the Deskpro 4000N.

5. If prompted, enter the Setup password.
If the Setup password is entered correctly, the ROMPaq utility will take over and run the flash

ROM upgrade in the Deskpro 4000N.
If the Setup password is incorrectly entered, the procedure will terminate and no changes will be

made to the ROM.

CAUTION:

corrupt the upgrade and will require recovery using the FailSafe Boot Block ROM.

6. When the utility finishes upgrading the ROM, remove the diskette from the diskette drive,
disconnect the second computer from the Deskpro 4000N.

7. Restart the Deskpro 4000N.

Do not turn the power off during a firmware upgrade. A loss of power during upgrade will

2.8.3 FailSafe Boot Block ROM

The FailSafe Boot Block ROM may be used in the event of a ROM flash failure. When an invalid
system ROM is detected there will be both audible and visual cues; a series of one long and three
short beeps and the flashing of the three keyboard lights.

Deskpro 4000S

To recover the system, complete the following steps:

1. Remove any diskettes from the diskette drive and turn off the power to the computer.

2. Insert a ROMPaq diskette into the diskette drive.

3. Turn on power to the system.

If a setup password has been established, the Caps Lock light will illuminate as shown in

Table 2-6.

Compaq Deskpro 4000S and 4000N Personal Computers 2-17

4. If prompted, enter the Setup password.
When the system successfully starts from the diskette and reprograms the ROM, the three

keyboard lights will illuminate as shown in Table 2-6.

CAUTION: Do not turn the power off during a firmware upgrade. A loss of power during upgrade will
corrupt the upgrade and will require recovery using the FailSafe Boot Block ROM.

Deskpro 4000N

To recover the system after hearing the FailSafe Boot Block beeps, complete the following steps:

1. Turn off the Deskpro 4000N.

2. Connect a second computer to the Deskpro 4000N using only a null modem cable connected to
the serial ports on the rear panels of both computers.

3. Turn on the second computer, start Win 95 or Win NT, and insert the ROMPaq diskette into the
diskette drive of that computer.

In order to use the second computer’s diskette drive as an external diskette drive on the Deskpro

✎

4000N, optional Floppy Drive Server (FDS) software must be installed and running on the
second computer. The software may be downloaded from the Compaq World Wide Web Site
(www.compaq.com).

4. Turn on the Deskpro 4000N.
If a setup password has been established, the Caps Lock light will illuminate as shown in

Table 2-6.

5. If prompted, enter the Setup password.
When the system successfully starts from the diskette and reprograms the ROM. The three

keyboard lights will illuminate as shown in Table 2-6.

CAUTION: Do not turn the power off during a firmware upgrade. A loss of power during upgrade will
corrupt the upgrade and will require recovery using the FailSafe Boot Block ROM.

6. When the utility finishes upgrading the ROM, remove the diskette from the diskette drive and
disconnect the second computer from the Deskpro 4000N.

7. Restart the Deskpro 4000N.

2-18 Configuration and Diagnostic Utilities

Keyboard Light Combinations

The table below lists the keyboard light combinations along with the meaning and actions associated
with each combination.

Table 2-6

Keyboard Light Combinations

Num Lock Caps Lock Scroll Lock Meaning and Required Action

OFF ON OFF System requires setup password.

Enter the setup password. The light remains on until you enter
a valid setup password.

ON OFF OFF System could not start from a diskette because the ROMPaq

diskette is not present, is bad, or the drive is not ready.
Turn off the power, insert a valid ROMPaq diskette, then turn on

the power.

OFF OFF ON ROM upgrade failed.

Try another ROMPaq diskette. If the light remains on, contact
Compaq customer support.

ON ON ON ROM upgrade successfully completed.

Turn power off and back on to resume normal system
operation.

2.9 Compaq Intelligent Manageability

The Local Alert Pop-Up Dialog notifies you of an impending or actual hardware failure. It the
computer is connected to a network and the Compaq Insight Management Desktop Agents are
installed and configured, an SNMP trap (message) is sent to the specified SNMP-compliant
management application.

The Local Alert Pop-Up Dialog also tells you the steps you need to take prior to a hardware failure to
avoid loss of data and damage to the computer. The system administrator can create a customized
action message that might include contact telephone or pager numbers.

To close the Local Alert Pop-Up Dialog, click the Close button. To retrieve fault information after
closing the dialog, run Compaq Insight Personal Edition.

For more detailed information, refer to the online Intelligent Manageability Guide or Remote

Management Administrator’s Guide. Additional information is available in the Compaq Insight
Manager Users Guide.

Compaq Deskpro 4000S and 4000N Personal Computers 2-19

2.10 Compaq Insight Manager

Compaq Insight Manager is a client/server software application you can use to remotely manage and
receive information about Compaq computers. Insight Manager remotely gathers information about
computers needing service; for example, Insight Manager can inform you if computer components
are experiencing failure or prefailure errors.

2.10.1 Deskpro 4000S

Compaq Insight Manager requires the installation of Insight Agents for Windows 95 on the Compaq
Deskpro 4000S Personal Computer, and the installation of the Insight Manager Console on a
computer used as a management console. Before installing the Insight Agents on the Compaq
Deskpro 4000S Personal Computer, be sure to install SNMP service and SNMP trap service (for
Windows 95) from the Microsoft CD. See installation instructions provided on the CD.

Compaq Insight Manager provides the following features to help you support Deskpro 4000S
Personal Computers:

■

Remote alerts for optional ECC DIMM memory single bit error prefailure and SCSI disk drive
prefailure notification

■

Asset and configuration information collected into a database and accessed by the Insight
Manager console for remote tracking of computer assets and configurations

■

Printed configuration (similar to INSPECT) reports at the Insight Manager console for remote
computers

■

Setting of performance thresholds on a computer; you can receive an alert when a threshold is
exceeded (such as PCI bus utilization threshold or disk volume usage threshold)

■

Remote warm and/or cold reboot of a computer

■

Version Control to view versions of Compaq drivers, agents, and system ROM currently running
on a remote computer; you can receive a recommendation on updates available from Compaq

■

Alpha pager forwarding to send computer alerts to an alpha or numeric pager (requires a modem)

■

Ability to view health logs on remote computers to see previous Power-on Self Test (POST)
errors, critical errors, and ECC memory errors

■

Environment alerts for computers with a temperature out of the normal range

2-20 Configuration and Diagnostic Utilities

2.10.2 Deskpro 4000N

Compaq Insight Manager requires the installation of Insight Agents for Windows NT on the Compaq
Deskpro 4000N Personal Computer, and the installation of the Insight Manager Console on a
computer used as a management console. Before installing the Insight Agents on the Compaq
Deskpro 4000N Personal Computer, be sure to install SNMP service and SNMP trap service (for
Windows NT) from the Microsoft CD. See installation instructions provided on the CD.

Compaq Insight Manager provides the following features to help you support Deskpro 4000N
Personal Computers:

■

Remote alerts for optional ECC DIMM memory single bit error prefailure and SCSI disk drive
prefailure notification

■

Asset and configuration information collected into a database and accessed by the Insight
Manager console for remote tracking of computer assets and configurations

■

Printed configuration (similar to INSPECT) reports at the Insight Manager console for remote
computers

■

Setting of performance thresholds on a computer; you can receive an alert when a threshold is
exceeded (such as PCI bus utilization threshold or disk volume usage threshold)

■

Remote warm and/or cold reboot of a computer

■

Version Control to view versions of Compaq drivers, agents, and system ROM currently running
on a remote computer; you can receive a recommendation on updates available from Compaq

■

Ability to view health logs on remote computers to see previous Power-on Self Test (POST)
errors, critical errors, and ECC memory errors

■

Environment alerts for computers with a temperature out of the normal range

Compaq Deskpro 4000S and 4000N Personal Computers 2-21

2.11 NT Support Software Diskette

The NT Support Software Diskette (SSD) is a set of Compaq-specific drivers that enable the Deskpro
4000S and 4000N Personal Computers to operate at optimum performance. Updates are available on
the Compaq Web site (http://www.compaq.com) and are also available through subscription to the
Compaq Support Software CD.

NT SSD installation program automatically detects the components on a Deskpro 4000S and 4000N
Personal Computers and determines if the drivers need to be updated.

When you service a Deskpro 4000S or 4000N Personal Computer, make sure that it is running the
latest version of the NT SSD drivers for optimum performance. To determine the version of NT SSD
installed on the computer, use the Version Control task in Insight Manager, or look at the version in
the file properties of the SETUPAPP.EXE file in the \winnt\system32\cpqntssd directory.

2.12 Prefailure Warranty

The Prefailure Warranty is standard for select components for all Compaq Deskpro 4000S and
4000N Series of Personal Computers. It extends the Compaq three-year, limited warranty by
applying it to critical system components before they actually fail. The Prefailure Warranty ensures
that when you receive notification of a prefailure condition through Compaq Insight Manager, the
component will be replaced under warranty.

The Compaq Deskpro 4000S and 4000N Series of Personal Computers components covered by the
Prefailure Warranty are:

■

EIDE hard drives

■

Error Correcting Code (ECC) memory (optional ECC memory modules only)

2-22 Configuration and Diagnostic Utilities

chapter

I

LLUSTRATED PARTS CATALOG

This chapter provides an illustrated parts breakdown and a reference for spare parts for the Compaq
Deskpro 4000S and Deskpro 4000N Series of Personal Computers.

3

Figure 3-1.

Compaq Deskpro 4000S and 4000N Series of Personal Computers

Compaq Deskpro 4000S and 4000N Personal Computers 3-1

3.1 System Unit

Figure 3-2.

3-2 Illustrated Parts Catalog

System Unit Spares

Table 3-1

System Unit Spares

Description Spare Part Number Warranty Tier

1.

Hood assembly, includes hood, front bezel, bezel blank, hood release latch
buttons, hood release springs, and required screws (Deskpro 4000S)

1. Hood assembly, includes hood, front bezel, hood release latch buttons, hood
release springs, and required screws (Deskpro 4000N)*

2. Expansion board cage, includes backplane, slot cover, and required screws
(Deskpro 4000S)

2. Expansion board cage, includes backplane, slot cover, and required screws
(Deskpro 4000N)*

3. Drive cage with cable clamp 288434-001 A

4. Power Supply 288329-001 A

5. Chassis assembly, includes hinge bar, hinge bar retaining screw, drive cage
spring, cover release latch, and power supply hinge bracket with mounting
screws (repair/exchange only)

*Not shown.

288441-001 A

308348-001 A

288398-001 A

306426-001 A

288435-001 A

Compaq Deskpro 4000S and 4000N Personal Computers 3-3

3.2 Parts Kits

Figure 3-3.

Part Kits Components

3-4 Illustrated Parts Catalog

Table 3-2
Parts Kits

Description Spare Part Number Warranty Tier

1.

Miscellaneous plastics kit, includes:

a. Bezel blank*
b. Power switch button
c. Power switch button spring
d. Cover release latch (2 ea)
e. Hood latch button (2 ea)
f. Flat ribbon cable clip (not used)
g. Plastic cable tie (2 ea)*

2. Miscellaneous hardware kit, includes:

a. Screw, #6-32 x 3/16 wafer head (5 ea)
b. Screw, #6-32 x ¼ high top with serrations (5 ea)**
c. Screw, #6-19 x 3/8 plastite, thread forming (5 ea)**
d. Screw, M2.5 x .45 wafer head (5 ea)**
e. Screw, M2.5 x .45 high top (5 ea)
f. Screw, #4-40 x 5/16 slide latch (5 ea)
g. Foot (4 ea)
h. Power supply pivot bracket (2 ea)

*Deskpro 4000S only.
**Not illustrated.

288436-001 D

288437-001 D

Compaq Deskpro 4000S and 4000N Personal Computers 3-5

3.3 Miscellaneous Parts

Figure 3-4.

Miscellaneous Parts

3-6 Illustrated Parts Catalog

Table 3-3

Miscellaneous Parts

Description Spare Part Number Warranty Tier

1.

Two-button mouse 141189-401 A

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - US (Deskpro 4000S only)

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - Europe (Deskpro 4000S only)*

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - New Zealand (Deskpro 4000S only)*

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - Asia Pacific (Deskpro 4000S only)*

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - UK (Deskpro 4000S only)*

2. Compaq Multimedia Sound System, includes speaker, cable, board, and
software - Middle East (Deskpro 4000S only)*

3. Security lock bracket 173066-001 A

4. Heatsink, includes thermal pad and retaining clip 288473-001 A

5. Battery, real-time clock (external) 160274-001 A

6. Computer mounting bracket 288461-001 A

7. Expansion slot cover* 283947-001 A

8. Compaq SCSI external storage adapter** 142185-001 A

*Not illustrated. **Not shown and not a spare part number.

294122-001 A

294122-022 A

294122-011 A

294122-371 A

294122-031 A

294122-A91 A

Compaq Deskpro 4000S and 4000N Personal Computers 3-7

3.4 Mass Storage Devices

Figure 3-5.

Mass Storage Devices

3-8 Illustrated Parts Catalog

Table 3-4

Mass Storage Devices

Description Spare Part Number Warranty Tier

1.

3.5-inch, 1.44-MB Diskette Drive with mounting screws (Deskpro 4000S only) 288456-001 A

2. LS-120 Drive, internal (Deskpro 4000S only) 263709-001 A

3. 20X max IDE Slimline CD-ROM Drive (Deskpro 4000S only) 288445-001 A

4. 2.1-GB EIDE Hard Drive (Deskpro 4000S only) 288449-001 A

5. 1.6-GB EIDE Hard Drive (Deskpro 4000N only) 308347-001 A

5. 2.4-GB Ultra ATA Hard Drive* 296679-001 A

6. 2.1-GB Ultra SCSI Hard Drive* 247409-001 A

7. 4.2-GB Ultra SCSI Hard Drive 247408-001 A

8. 2/4-GB DAT Tape Drive* 142019-001 A

8. 4/8-GB DAT Tape Drive* 295163-001 A

9. LS-120 Media (Deskpro 4000S only)* 186076-001 D

10. Tape cartridge, 2.0-GB* 131148-001 D

10. Tape cartridge, 120-MB (Deskpro 4000S only)* 199496-001 D

*Not illustrated.

Compaq Deskpro 4000S and 4000N Personal Computers 3-9

3.5 Cables

Figure 3-6.

Cables

3-10 Illustrated Parts Catalog

Table 3-5

Cables

Description Spare Part Number Warranty Tier

1.

Cable, diskette drive (Deskpro 4000S only) 288444-001 A

2. Cable, Slimline CD-ROM drive with CD-ROM adapter (Deskpro 4000S only) 288427-001 A

3. Cable, IDE hard drive 288442-001 A

4. Cable, power switch assembly, includes power cable with LEDs, power switch,
and switch holder

5. Cable, audio (use with 166575-001) (Deskpro 4000S only)* 171109-001 A

5. Cable, audio (use with 294122-XXX) (Deskpro 4000S only)* 294170-001 A

6. Power cord, AC, gray (US, Canada)* 121258-001 A

6. Power cord, AC, black (US, Canada, Thailand, Taiwan)* 142766-001 A

6. Power cord, AC, black (Australia/New Zealand)** 100661-001 A

6. Power cord, AC, black (Europe)** 100614-001 A

7. Cable, SCSI external* 146776-001 A

8. Cable, SCSI controller (use with 184751-001) (Deskpro 4000S only)* 184118-001 A

9. Cable, SCSI controller (use with 247399-001)* 247485-001 A

10. AUI to BNC adapter* 192768-001 A

11. Cable, video for P1610 color monitor* 305717-001 A

12. Cable, phone for modem (Deskpro 4000S only)* 127949-001 A

13. Cable, RJ-45 connector* 290663-001 A

14. Cable, power adapter for LS-120 (Deskpro 4000S only)* 186423-001 A

15. Cable, data for LS-120 (Deskpro 4000S only)* 247568-001 A

*Not illustrated. **Not illustrated and not a spare part number.

288443-001 A

Compaq Deskpro 4000S and 4000N Personal Computers 3-11

3.6 Standard and Optional Boards

Figure 3-7.

Standard and Optional Boards

Table 3-6

Standard and Optional Boards

Description Spare Part Number Warranty Tier

1.

System board with MMX Technology, with tray, w/o processor 288426-001 A

2. System board with MMX Technology with tray, w/o processor (Brazil)* 288426-201 A

3. Microprocessor with MMX technology, 166-Mhz 288460-001 A

4. Microprocessor with MMX technology, 200-MHz* 288459-001 A

4. Microprocessor with MMX technology, 233-MHz* 286258-001 A

5. CD-ROM adapter board with cable (Deskpro 4000S only)* (see Table 3-5) 288427-001 A

6. 8-MB DIMM without ECC 288438-001 A

7. 16-MB DIMM without ECC* 278066-001 A

8. 32-MB DIMM without ECC* 278067-001 A

9. 64-MB DIMM without ECC* 278095-001 A

10. 128-MB DIMM without ECC* 278096-001 A

11. 16-MB DIMM with ECC* 278097-001 A

continued

3-12 Illustrated Parts Catalog

Table 3-6

Continued

Description Spare Part Number Warranty Tier

12. 32-MB DIMM with ECC* 288440-001 A

13. 64-MB DIMM with ECC* 278098-001 A

14. 128-MB DIMM with ECC* 278099-001 A

15. Enhanced Business Pro Audio Kit, (ESS 1868) (Deskpro 4000S only) 247428-001 A

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software ­US* (Deskpro 4000S only)

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software ­Europe* (Deskpro 4000S only)

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software ­New Zealand* (Deskpro 4000S only)

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software ­Asia Pacific* (Deskpro 4000S only)

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software -UK*
(Deskpro 4000S only)

16. Compaq Multimedia Sound System, w/speaker, cable, board, and software ­Middle East* (Deskpro 4000S only )

17. Soundboard with wave table (ISA board) (Deskpro 4000S only) 166575-001 A

18. Compaq PCI Ultra SCSI Controller, use with 247485-001 cable* 247399-001 A

19. Compaq ISA Plug and Play SCSI Controller, use with 184118-001 cable
(Deskpro 4000S only)

20. 33.6 K/56 Baud Modem (Deskpro 4000S only)* 294912-001 A

21. 33.6 K Modem (ISA board) (Deskpro 4000S only) 259214-002 A

22. SpeedPaq ISDN Modem (Deskpro 4000S only)* 273529-001 A

23. Compaq Netelligent Corporate Communicator 294710-001 A

24. Netelligent 10/100 TX PCI UTP 169849-001 A

25. Netelligent 10T PCI UTP* 242501-001 A

26. Netelligent 10T ISA UTP (Deskpro 4000S only)* 265617-001 A

27. Netelligent 10T/2 ISA UTP/coax (Deskpro 4000S only)* 265618-001 A

28. Netelligent 10T/2 PCI UTP/coax* 292857-001 A

29. Netelligent TR ISA, UTP/STP, IBM (Deskpro 4000S only)* 301211-001 A

29. Token Ring, PCI, UTP/STP, IBM 301210-001 A

30. Netelligent 4/16 TR PCI IBM STP/UTP* 268010-001 A

31. Netelligent 4/16 TR ISA IBM UTP/STP-S (Deskpro 4000S only)* 265436-001 A

32. Backplane with expansion board cage (see Table 3-1) (Deskpro 4000S only)* 288398-001 A

32. Backplane with expansion board cage (See Table 3-1)(Deskpro 4000N only) 306426-001 A

*Not illustrated.

294122-001 A

294122-022 A

294122-011 A

294122-371 A

294122-031 A

294122-A91 A

184751-001 A

Compaq Deskpro 4000S and 4000N Personal Computers 3-13

3.7 Keyboards

Figure 3-8.

Enhanced Keyboard

3-14 Illustrated Parts Catalog

Table 3-7

Keyboards

Description Spare Part Number Warranty Tier

1.

Compaq Enhanced Keyboard - Arabic* 166514-171 A

2. Compaq Enhanced Keyboard - Belgian* 166514-181 A

3. Compaq Enhanced Keyboard - BHCSY*

4. Compaq Enhanced Keyboard - Canadian Government* 166514-AN1 A

5. Compaq Enhanced Keyboard - Chinese* 166514-AA1 A

6. Compaq Enhanced Keyboard - Czech 166514-221 A

7. Compaq Enhanced Keyboard - Danish* 166514-081 A

8. Compaq Enhanced Keyboard - Finnish* 166514-351 A

9. Compaq Enhanced Keyboard - French* 166514-051 A

10. Compaq Enhanced Keyboard - French Canadian* 166514-121 A

11. Compaq Enhanced Keyboard - German* 166514-041 A

12. Compaq Enhanced Keyboard - Greek* 166514-151 A

13. Compaq Enhanced Keyboard - Hungarian* 166514-211 A

14. Compaq Enhanced Keyboard - International* 166514-B31 A

15. Compaq Enhanced Keyboard - Italian* 166514-061 A

16. Compaq Enhanced Keyboard - Latin American Spanish* 166514-161 A

17. Compaq Enhanced Keyboard - Norwegian* 166514-091 A

18. Compaq Enhanced Keyboard - Polish* 166514-241 A

19. Compaq Enhanced Keyboard - Portuguese* 166514-131 A

20. Compaq Enhanced Keyboard - Russian* 166514-251 A

21. Compaq Enhanced Keyboard - Slovakian* 166514-231 A

22. Compaq Enhanced Keyboard - Spanish* 166514-071 A

23. Compaq Enhanced Keyboard - Swedish* 166514-101 A

24. Compaq Enhanced Keyboard - Swiss* 166514-111 A

25. Compaq Enhanced Keyboard - Taiwanese* 166514-AB1 A

26. Compaq Enhanced Keyboard - Thai* 166514-281 A

27. Compaq Enhanced Keyboard - Turkish* 166514-141 A

28. Compaq Enhanced Keyboard - UK* 166514-031 A

29. Compaq Enhanced Keyboard - U.S. 166514-001 A

* Not illustrated.

Bosnia-Herzegovina, Croatia, Slovenia, and Yugoslavia

φ

φ

166514-B41 A

Compaq Deskpro 4000S and 4000N Personal Computers 3-15

3.8 Monitors

Figure 3-9.

3-16 Illustrated Parts Catalog

Compaq Monitors

Table 3-8

Monitors

Description Spare Part Number Warranty Tier

1.

Compaq 140 Color Monitor, NA* 210507-601 A

2.

Compaq 140 Color Monitor , EMEA * 210507-602 A

2.

Compaq 140 Color Monitor, SH* 210507-603 A

2.

Compaq 140 Color Monitor , GSA * 210507-604 A

2.

Compaq 140 Color Monitor, NH* 210507-606 A

3.

Compaq V40 Color Monitor, NH 307409-001 A

3.

Compaq V40 Color Monitor, GSA 307409-404 A

3.

Compaq V40 Color Monitor, SH 307409-B21 A

4.

Compaq V50 Color Monitor, NA and EMEA 264152-001 A

4.

Compaq V50 Color Monitor, GSA 264152-004 A

4.

Compaq V50 Color Monitor, TCO95, Europe 264152-021 A

5.

Compaq P50 Color Monitor, NA* 264202-001 A

5.

Compaq P50 Color Monitor, GSA* 264202-004 A

5.

Compaq P50 Color Monitor, TCO95, Europe* 264202-021 A

5.

Compaq P50 Color Monitor, International, SH* 264202-B21 A

6.

Compaq P70 Color Monitor, TCO95, NA 255652-001 A

6.

Compaq P70 Color Monitor, TCO95, International, SH 255652-B23 A

7.

Qvision 210 Color Monitor, NA* 210407-601 A

7.

Qvision 210 Color Monitor, TCO* 210407-602 A

7.

Qvision 210 Color Monitor, SH* 210407-603 A

8. Compaq V70 Color Monitor, NA* 255609-001 A

8.

Compaq V70 Color Monitor, GSA* 255609-004 A

8.

Compaq V70 Color Monitor, TCO95, Europe* 255638-021 A

8.

Compaq V70 Color Monitor, International, SH* 255638-B21 A

8.

Compaq V70 Color Monitor, International, NH* 255638-B22 A

8.

Compaq V70 Color Monitor, TCO95, International SH* 255638-B23 A

9. Compaq P110 Color Monitor, NH, NA 284959-001 A

9.

Compaq P110 Color Monitor, International, SH 284959-B23 A

10. Compaq V90 Color Monitor, TC095, NH 305602-001 A

10. Compaq V90 Color Monitor, TC095, SH* 305602-B23 A

10. Compaq V90 Color Monitor, TC095, GSA* 305602-004 A

11. Compaq P1610 Color Monitor, TC095, NH* 305710-001 A

continued

Compaq Deskpro 4000S and 4000N Personal Computers 3-17

Table 3-8

Continued

Description Spare Part Number Warranty Tier

12. TFT500, 15.1-inch Flat Panel Display - repair parts listed below:

- Power supply* 296473-001 A

- Monitor base* 296474-001 A

- Cable access cover* 296475-001 A

- Rear enclosure* 296476-001 A

- Shield/support bracket* 296477-001 A

- Controller assembly* 296478-001 A

- TFT-LCD panel assembly* 296481-001 A

- Backlight bulbs (2 ea)* 296480-001 A

- Protective cover* 296738-001 A

- Front bezel assembly* 296479-001 A

- Security locking bracket* 296483-001 A

- Miscellaneous internal cables* 296482-001 A

- Mounting arm* 285041-001 A

- VGA cable for mounting arm* 285042-001 A

- Power cable for mounting arm* 285043-001 A

- Miscellaneous screw kit* 286739-001 A
*Not illustrated.

3-18 Illustrated Parts Catalog

3.9 Shipping Boxes

Table 3-9
Shipping Boxes
(not illustrated)

Description Spare Part Number Warranty Tier

Return kit, PC (shipping box with packing) US only 288433-001 D
Return kit, PC (shipping box with packing) International 288433-002 D
Shipping box and packing, Compaq V70 Color Monitor 255616-001 D
Shipping box, Compaq V70 Color Monitor (5 ea) 255617-001 D
Shipping box and packing, Compaq QV210 Color Monitor 210412-001 D
Shipping box, Compaq QV210 Color Monitor (5 ea) 210413-001 D
Shipping box and packing, Compaq P70 Color Monitor 255644-001 D
Shipping box, Compaq P70 Color Monitor (5 ea) 255645-001 D
Shipping box, Compaq P50 Color Monitor (5 ea) 264204-001 D
Shipping box and packing, Compaq V50 Color Monitor 264156-001 D
Shipping box, Compaq V50 Color Monitor (5 ea) 264157-001 D
Shipping box and packing, Compaq P110 Color Monitor (Return kit) 284996-001 D
Shipping box, Compaq P110 Color Monitor (5 ea) 284996-002 D
Shipping box and packing, Compaq 140 Color Monitor 210537-001 D
Shipping box, Compaq 140 Color Monitor (5 ea) 210538-001 D
Return kit, Compaq TFT500, 15.1-inch Flat Panel Display 285010-001 D
Shipping box and packing, Compaq V90 Color Monitor (Return kit) US only 305627-001 D
Shipping box and packing, Compaq V90 Color Monitor International 305627-002 D
Shipping box and packing, Compaq P1610 Color Monitor (Return kit) 305712-001 D
Shipping box, Compaq P1610 Color Monitor (5 ea) 305713-001 D

Compaq Deskpro 4000S and 4000N Personal Computers 3-19

3.10 Documentation

Table 3-10

Documentation

(not illustrated)

Description Spare Part Number Warranty Tier

Maintenance & Service Guide (Deskpro 4000S and 4000N) 288457-001 D
Illustrated Parts Map (Deskpro 4000S and 4000N) 288458-001 D
Reference Guide (Deskpro 4000S) 288393-001 D
Reference Guide (Deskpro 4000N) 308336-001 D
Getting Started (Deskpro 4000S and 4000N) 278023-002 D
TFT500 Color Monitor Maintenance and Service Guide (US) * 285014-001 D
TFT500 Color Monitor Maintenance and Service Guide EMEA 297312-001 D

Users Guide, V50 Color Monitor* 264154-001 D

Users Guide, QV210 Color Monitor* 210409-004 D

Users Guide, V70 Color Monitor* 255635-003 D

Users Guide, V40 Color Monitor* 295504-001 D

Users Guide, Sound System (use with 166575-001)* 294111-001 D

Users Guide, Modem, US* 183467-001 D

Users Guide, Compaq TFT500 Color Monitor* 285012-001 D

Users Guide, Microsoft Windows NT 3.51 Danish 183987-081 D

Users Guide, Microsoft Windows NT 3.51, Dutch 183987-331 D

Users Guide, Microsoft Windows NT 3.51, English 183987-001 D

Users Guide, Microsoft Windows NT 3.51, Finnish 183987-351 D

Users Guide, Microsoft Windows NT 3.51, French 183987-051 D

Users Guide, Microsoft Windows NT 3.51, German 183987-041 D

Users Guide, Microsoft Windows NT 3.51, Italian 183987-061 D

Users Guide, Microsoft Windows NT 3.51, Japanese 183987-191 D

Users Guide, Microsoft Windows NT 3.51, Latin American Spanish 183987-161 D

Users Guide, Microsoft Windows NT 3.51, Norwegian 183987-091 D

Users Guide, Microsoft Windows NT 3.51, Swedish 183987-101 D

Users Guide, Microsoft Windows NT 4.0, Danish 183988-081 D

Users Guide, Microsoft Windows NT 4.0, Dutch 183988-331 D

Users Guide, Microsoft Windows NT 4.0, English 183988-001 D

Users Guide, Microsoft Windows NT 4.0, Finnish 183988-351 D

Users Guide, Microsoft Windows NT 4.0, French 183988-051 D

Users Guide, Microsoft Windows NT 4.0, German 183988-041 D

Users Guide, Microsoft Windows NT 4.0, Italian 183988-061 D

Users Guide, Microsoft Windows NT 4.0, Japanese 183988-191 D
*Not a spare part number.

3-20 Illustrated Parts Catalog

3.11 Software

Table 3-11

Software

(not illustrated)

Description Spare Part Number Warranty Tier

Users Guide, Microsoft Windows NT 4.0, Latin American Spanish 183988-161 D
Users Guide, Microsoft Windows NT 4.0, Norwegian 183988-091 D
Users Guide, Microsoft Windows NT 4.0, Swedish 183988-101 D
EZ-SCSI Software diskette 184885-001 D
LS-120 Driver diskette 183989-001 D
SpeedPaq ISDN Modem diskette 290676-001 D
Enhanced Business Pro Audio ESS1868 diskette 274987-001 D
Microsoft Windows NT 4.0 CD-ROM, Danish 183992-081 D
Microsoft Windows NT 4.0 CD-ROM, Dutch 183992-331 D
Microsoft Windows NT 4.0 CD-ROM, English 183992-001 D
Microsoft Windows NT 4.0 CD-ROM, Finnish 183992-351 D
Microsoft Windows NT 4.0 CD-ROM, French 183992-051 D
Microsoft Windows NT 4.0 CD-ROM, German 183992-041 D
Microsoft Windows NT 4.0 CD-ROM, Italian 183992-061 D
Microsoft Windows NT 4.0 CD-ROM, Japanese 183992-191 D
Microsoft Windows NT 4.0 CD-ROM, Latin American Spanish 183992-161 D
Microsoft Windows NT 4.0 CD-ROM, Norwegian 183992-091 D
Microsoft Windows NT 4.0 CD-ROM, Swedish 183992-101 D
Microsoft Windows NT 3.51 CD-ROM, Danish 183993-081 D
Microsoft Windows NT 3.51 CD-ROM, Dutch 183993-331 D
Microsoft Windows NT 3.51 CD-ROM, English 183993-001 D
Microsoft Windows NT 3.51 CD-ROM, Finnish 183993-351 D
Microsoft Windows NT 3.51 CD-ROM, French 183993-051 D
Microsoft Windows NT 3.51 CD-ROM, German 183993-041 D
Microsoft Windows NT 3.51 CD-ROM, Italian 183993-061 D
Microsoft Windows NT 3.51 CD-ROM, Japanese 183993-191 D
Microsoft Windows NT 3.51 CD-ROM, Latin American Spanish 183993-161 D
Microsoft Windows NT 3.51 CD-ROM, Norwegian 183993-091 D
Microsoft Windows NT 3.51 CD-ROM, Swedish 183993-101 D

Compaq Deskpro 4000S and 4000N Personal Computers 3-21

chapter

R

EMOVAL AND REPLACEMENT

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.

4

CAUTION:

system board. You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.

When the computer is plugged into an AC power source there is always voltage applied to the

4.1 Electrostatic Discharge Information

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

Compaq Deskpro 4000S and 4000N Personal Computers 4-1

4.1.1 Generating Static

Table 4-1 shows how different activities generate static electricity at different electrostatic voltage
levels.

Table 4-1

Typical Electrostatic Voltages

Relative Humidity

Event 10% 40% 55%

Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPs* from plastic tube 2,000 V 700 V 400 V
Removing DIPs* from vinyl tray 11,500 V 4,000 V 2,000 V
Removing DIPs* from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 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.

✎✎

4.1.2 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.

4-2 Removal and Replacement Preliminaries

4.1.3 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..

Table 4-2

Static Shielding Protection Levels

Method Voltage

Antistatic plastic 1,500
Carbon-loaded plastic 7,500
Metallized laminate 15,000

4.1.4 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.

■

Use fixtures made of static-safe materials when fixtures must directly contact dissipative

■

surfaces.
Keep work area free of nonconductive materials such as ordinary plastic assembly aids and

■

Styrofoam.
Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

■

Compaq Deskpro 4000S and 4000N Personal Computers 4-3

4.1.5 Recommended Materials and Equipment

Materials and equipment that are recommended for use in preventing static electricity include:

■

Antistatic tape

■

Antistatic smocks, aprons, or sleeve protectors

■

Conductive bins and other assembly or soldering aids

■

Conductive foam

■

Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance

■

Static-dissipative table or floor mats with hard tie to ground

■

Field service kits

■

Static awareness labels

■

Wrist straps and footwear straps providing one-megohm +/- 10% resistance

■

Material handling packages

■

Conductive plastic bags

■

Conductive plastic tubes

■

Conductive tote boxes

■

Opaque shielding bags

■

Transparent metallized shielding bags

■

Transparent shielding tubes

4-4 Removal and Replacement Preliminaries

4.2 Routine Care

4.2.1 General Cleaning Safety Precautions

1. Never use solvents or flammable solutions to clean the computer.

2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and
then use the cloth on the component.

3. Always turn off the computer when cleaning with liquids or damp cloths.

4. Always turn off the computer before cleaning the keyboard, mouse, or air vents.

5. Disconnect the keyboard before cleaning it.

6. Wear safety glasses equipped with side shields when cleaning the keyboard.

4.2.2 Cleaning the Computer Case

Follow all safety precautions in Section 4.2.1 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 or swab.

■ For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it

with a cloth or swab dampened with clear water.

■ For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will
evaporate quickly and not leave a residue.

■ After cleaning, always wipe the unit with a clean, lint-free cloth.

■ Occasionally, clean the air vents on the computer. Lint and other foreign matter can block the

vents and limit the airflow.

4.2.3 Cleaning the Keyboard

Follow all safety precautions in Section 4.2.1 before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in Section 4.2.2.
When cleaning debris from under the keys, review all rules in Section 4.2.1 before following these

procedures:

CAUTION:

the keys.

■ Visible debris underneath or between the keys may be removed by vacuuming or shaking.

■ Canned, presurized air may be used to clean debris from under the keys. Caution should be used

as too much air pressure can dislodge lubricants applied under the wide keys.

Use safety glasses equipped with side shields before attempting to clean debris from under

Compaq Deskpro 4000S and 4000N Personal Computers 4-5

■ If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool

is available through many electronic supply outlets.

CAUTION: Never remove a wide levelled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.

■ Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed

out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to
remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.

4.2.4 Cleaning the Monitor

■ Wipe the monitor screen with a clean cloth moistened with water or with a towlette designed for

cleaning monitors. Do not use sprays or aerosols directly on the screen, the liquid may seep into
the housing and damage a component. Never use solvents or flammable liquids on the monitor.

■ To clean the monitor body follow the procedures in Section 4.2.2.

4.2.5 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 the housing. Pull out

any debris from the ball socket and wipe the ball with a clean dry cloth before reassembly.

■

To clean the mouse body, follow the procedures in Section 4.2.2.

4.3 Service Considerations

Listed below are some of the considerations that you should keep in mind during the disassembly
and assembly of the computer.

4.3.1 Tools and Software Requirements

To service the computer, you need the following:

■

Torx T-15 screwdriver

■

Flat-bladed screwdriver

■

Diagnostics software

■

Tool kit, Compaq part number 100767-001 (includes case utility tool, connector removal tool,
and loop-back plugs)

4.3.2 Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads
and may be of different lengths. If an incorrect screw is used during the reassembly process, it can
damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept
with the part that was removed, then returned to their proper locations.

4-6 Removal and Replacement Preliminaries

As each subassembly is removed from the computer, it should be placed away from the work

✎

area to prevent damage.

4.3.3 Cables and Connectors

Most cables used throughout the unit are flat, flexible cables. These cables must be handled with care
to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or
removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid
bending, twisting, or tearing the cables, and ensure that the cables are routed in such a way that they
cannot be caught or snagged by parts being removed or replaced.

CAUTION:

reassembly process. Improper cable placement can damage the computer.

When servicing this computer, ensure that cables are placed in their proper location during the

4.3.4 Hard Drives

Handle hard drives as delicate precision components, avoiding all physical shock and vibration. This
applies to failed drives as well as replacement spares.

Use only the packaging provided by Compaq for shipping.

■

Do not remove hard drives from the shipping package for storage. Keep hard drives in their

■

protective packaging until they are actually mounted in the CPU.
Avoid dropping drives from any height onto any surface.

■

4.3.5 Plastic Parts

Plastic parts can be damaged by the use of excessive force during disassembly and reassembly.
When handling the plastic parts, use care. Do not use a screwdriver or similar tool to pry apart the
plastic components; use the case utility tool provided in the Compaq tool kit, PN 100767-001.

4.3.6 Lithium Battery

The battery that came with the computer is nonreplaceable and is permanently soldered onto the
system board. Do not attempt to remove the lithium battery when installing a replacement battery.
The lithium battery may explode if mishandled.

CAUTION:

attempt, thereby making it unusable. Do not abuse or disassemble the lithium battery, as it may explode if
mistreated.

Never attempt to remove a lithium battery. You can damage the system board in such an

Compaq Deskpro 4000S and 4000N Personal Computers 4-7

chapter

R

EMOVAL AND REPLACEMENT

P

ROCEDURES

This chapter provides subassembly/module level removal and replacement procedures for the
Compaq Deskpro 4000S and 4000N Series of Personal Computers. All steps described in this chapter
may not apply to all models as there are some physical differences between the 4000S and the
4000N.

After completing all necessary removal and replacement procedures, run the Diagnostics utility to
verify that all components operate properly.

5

CAUTION:

system board. You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.

When the computer is plugged into an AC power source there is always voltage applied to the

5.1 Serial Number

The computer serial number should be provided to Compaq when requesting information or ordering
spare parts. The serial number is displayed on the right side of the system unit cover at the lower
front corner and also on the rear of the computer.

Figure 5-1.

Serial Number Location

Compaq Deskpro 4000S and 4000N Personal Computers 5-1

5.2 Installing the Personal Computer

There are three different methods of mounting the computer in a work area: self-mounting, mounting
bracket, and the drawer install method.

5.2.1 Self-Mounting Method

CAUTION:

To mount the computer directly to a work area, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Remove the removable expansion board cage (Section 5.9).

4. Disconnect the flat ribbon cables from the clip on the back of the drive cage and free the power
cables from the cable tie on the right side of the chassis.

5. Disconnect the cables from the system board.

6. Rotate the Easy Access Power Supply (Section 5.11) to an upright position.

7. Rotate the drive cage to an upright position.

8. Slide out the system board tray (Section 5.13).

9. Use a screwdriver to punch out the center portion of the rubber feet that are covering the screw
holes in the base of the chassis.

Do not mount the computer upside down or vertically when using this method.

5-2 Removal and Replacement Procedures

Figure 5-2.

Chassis Mounting Screw Holes

10. Position the computer in the desired area and mark through the mounting holes to accurately
locate where the fasteners will be installed.

11. Move the computer; then drill pilot holes in the mounting surface if required to accept the
fasteners.

CAUTION: Do not drill any holes through the computer chassis. Use the existing holes in the chassis to
layout the location of the desired holes.

12. Reposition the computer and install the fasteners through the computer chassis.

CAUTION: Use only #6 FH screws to mount the computer. A larger screw may damage or interfere with
the system board tray.

CAUTION: Carefully clean the cavity of the chassis to remove any foreign particles before reinstalling the
computer components.

13. Reinstall the balance of the computer components and the system unit cover.

Compaq Deskpro 4000S and 4000N Personal Computers 5-3

5.2.2 Mounting Bracket Method

CAUTION:

To install the optional mounting bracket, complete the following steps:

1. Position the mounting bracket in the desired area and mark through the mounting holes to
accurately locate where the fasteners will be installed.

2. Drill pilot holes in the mounting surface if required to accept the fasteners.

3. Install the fasteners through the mounting bracket.

CAUTION:

be installed. Failure to select the proper fasteners may result in damage to the computer.

Do not mount the computer upside down when using this method.

Make sure you use the proper fasteners to suit the material to which the mounting bracket will

Figure 5-3.

The computer may now be inserted into the mounting bracket.

✎

For more information, refer to the document supplied with the option kit.

5-4 Removal and Replacement Procedures

Installing the Computer Mounting Bracket

The cable lock provision may be used with this option. Refer to Section 5.6 for more
information.

5.2.3 Drawer Installation Method

When installing a Deskpro 4000S or 4000N chassis into a drawer, the following conditions must be
met to ensure proper air flow:

1. There must be at least 3-inches (7.6-cm) of clear space between the back of the drawer and
anything behind it such as a wall or the back panel of a desk.

2. There must be at least two 2-inch (5.1-cm) diameter holes in the back of the drawer. One hole
must be immediately behind the power supply for exhaust air and the other should be used for
routing the cables.

CAUTION:

Cable should not be run through the exhaust air hole.

3. There must be at least nine holes ranging in size from 0.38- to 0.50-inches (1.0- to 1.3-cm) in
diameter in the front drawer panel or in the bottom of the drawer in front of the chassis for fresh
air intake.

4. There should be at least one inch of clear space below the drawer to ensure proper air flow if
there are vent holes in the bottom of the mounting drawer.

5. There should also be at least one inch of clear space above the top of the chassis.

Compaq Deskpro 4000S and 4000N Personal Computers 5-5

5.3 Disassembly Sequence Chart

Use the chart below to determine the disassembly sequence for removing components from the
computer.

5.4 Preparation for Disassembly

5.5 Computer Feet

5.6 Cable Lock

5.7 System Unit Cover

5.8 Latch Retainer

5.9 Expansion Board Cage

5.10 Expansion Board

5.11 Easy Access Power Supply

5.12 System Board

5.13.1 Memory Module

5.13.2 Microprocessor

5.14 Replacement Battery

5.15.1 Switch Cable Assembly

5.15.2 Switch Mounting Bracket Assembly

5.16.1 System Unit Cover Release Button

5.16.2 Power Button

5.16.3 Bezel Blank

5.17 Mass Storage Devices

5.18 Drive Cage

5-6 Removal and Replacement Procedures

5.4 Preparation for Disassembly

See Chapter 4, “Removal and Replacement Preliminaries,” for initial procedures.
To prepare the computer for disassembly, complete the following steps:

1. Remove any diskette or compact disc from the computer.

2. Turn off the computer and any peripheral devices that are connected to it.

CAUTION:

CAUTION:

system board. You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.

3. Disconnect the power cord from the electrical outlet and then from the computer.

4. Disconnect all peripheral device cables from the computer.

During disassembly, label each cable as you remove it, noting its position and routing. Keep all

✎

screws with the units removed.

CAUTION:

screw in an application may damage the unit.

Turn off the computer before disconnecting any cables.

When the computer is plugged into an AC power source there is always voltage applied to the

The screws used in the computer are of different thread sizes and lengths; using the wrong

Compaq Deskpro 4000S and 4000N Personal Computers 5-7

5.5 Computer Feet

Four rubber feet are mounted to the underside of the chassis. To attach replacement feet to the
chassis, remove the protective strip from the adhesive on the back of the new feet and press them into
place. If necessary, scrape the residue of the old feet from the chassis using a small, flat-bladed
screwdriver.

Figure 5-4.

5-8 Removal and Replacement Procedures

Installing the Feet

5.6 Cable Lock

To install the cable lock provision, complete the following steps:

1. Separate the pieces of the security bracket by bending the metal where the three pieces join (see
inset).

2. Insert the tang of the narrow bracket into the slot and slide the U-shaped bracket between it and
the system unit cover (see inset); then, install the self-tapping screw included in the cable lock
kit.

3. Cover the screw with the flat portion of the bracket.

4. Install a lock (not provided) to secure the top part of the security bracket to control access to the
inside of the computer. Install a cable lock (not provided) to secure the computer to a secure
place.

Figure 5-5.

To remove the cable lock provision, reverse the above procedure.

Installing the Cable Lock

Compaq Deskpro 4000S and 4000N Personal Computers 5-9

The cable lock provision may be used with the mounting bracket option.

Figure 5-6.

Using the Cable Lock With the Mounting Bracket

5-10 Removal and Replacement Procedures

5.7 System Unit Cover

To remove the system unit cover, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Press in the quick release cover latch on each side of the front bezel to release the hood latches.

3. Slide the cover forward about 1-inch (2.5-cm); then, lift it up and off the unit.

Figure 5-7.

To replace the cover, reverse the above procedure.

Removing the System Unit Cover

Compaq Deskpro 4000S and 4000N Personal Computers 5-11

5.8 Latch Retainer

To remove the latch retainer, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Rotate the Easy Access Drive Cage to its upright position.

4. Remove the retaining screw that secures the latch retainer to the side of the chassis and remove
the latch.

Figure 5-8.

Removing the Cover Release Latch

To install the latch retainer, reverse the above procedure.

CAUTION:

be properly secured.

5-12 Removal and Replacement Procedures

Do not overtighten the latch retaining screw. Doing so may not allow the system unit cover to

5.9 Expansion Board Cage

The removable expansion board cage is spared from the factory with the backplane installed. To
remove the expansion board cage, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Pull the expansion board cage straight up to remove it from the chassis.

Figure 5-9.

To replace the expansion board cage, reverse the above procedure.

✎

Removing the Expansion Board Cage on a Deskpro 4000S

When installing the expansion board cage, ensure that the tab on the cage latches into the slot
on the side of the power supply.

Compaq Deskpro 4000S and 4000N Personal Computers 5-13

5.10 Expansion Board

The Deskpro 4000N has a single PCI expansion slot while the 4000S has both a PCI and an ISA slot.
To remove the expansion board, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Remove the expansion board cage (Section 5.9).

4. Remove the retaining screw that secures the board to the expansion board cage; then, remove the
expansion board.

Figure 5-10.

To replace the expansion board, reverse the above procedure.

✎

The computer should automatically recognize the added Plug and Play expansion board.

Only a 7-inch long option board may be used in these models.

✎

Removing the Expansion Board

If you are installing an expansion board for the first time, remove the desired expansion board
slot cover before installing the board.

When installing the expansion board cage, ensure that the tab on the cage latches into the slot
on the side of the power supply.

5-14 Removal and Replacement Procedures

5.11 Easy Access Power Supply

To remove the Easy Access Power Supply, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Remove the expansion board cage (Section 5.9).
The power cord must be removed from the computer before the power supply can be rotated to

✎

an upright position.

4. Disconnect the power cables from the drives.

It is not necessary to remove the hard drive 1, diskette drive 2, or CD-ROM drive 3 ribbon
cables from the system.

5. Release the power cables from the cable tie on the side of the chassis.

Figure 5-11.

Positioning the Cables on the Rear of the Drive Cage (Deskpro 4000S Shown)

Compaq Deskpro 4000S and 4000N Personal Computers 5-15

6. Loosen the two screws that secure the power supply hinge bracket 1 to the side of the chassis
and slide the bracket to the rear to disengage it from the power supply.

It is not necessary to remove the hinge bracket for this operation.

✎

7. Rotate the power supply up 2, slide it to the rear 3, and remove it from the chassis 4.

Figure 5-12.

To replace the power supply, complete the following steps:

1. Set the power supply down on the system board so that the built-in connector is resting on the
socket on the system board.

2. Push the hinge bracket into the hinge hole on the power supply. Hold the bracket in place with
one finger while tightening the rear retaining screw.

Ensure that there is no slack between the power supply, the chassis, and the hinge bracket.

3. Tighten the forward retaining screw to secure the hinge bracket.

4. Press the power supply down so that the built-in connector makes a good electrical connection
with the system board.

5. Continue with the balance of the installation sequence which is the reverse of the installation
process described above.

✎

Removing the Easy Access Power Supply

When installing the expansion board cage, ensure that the tab on the cage latches into the slot
on the side of the power supply.

5-16 Removal and Replacement Procedures

5.12 System Board

To remove the system board, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Remove the expansion board cage (Section 5.9).
The power cord must be removed from the computer before the power supply can be rotated to

✎

an upright position.

4. Rotate the drive cage to an upright position.

CAUTION:

cable damage.

5. Disconnect all cables from the system board.

6. Rotate the power supply to an upright position.

Check the position of all cables and wires before raising or lowering the drive cage to prevent

Compaq Deskpro 4000S and 4000N Personal Computers 5-17

7. Slide the system board with the tray out of the chassis.
If a replacement external battery is installed on the system board, do not unplug the battery from

✎

the system board connector as that will erase the CMOS. Remove the external battery from the
hook-and-loop fastener on the chassis but leave it electrically connected to the system board.

Figure 5-13.

To install a new system board, reverse the above procedures.

Removing the System Board

5-18 Removal and Replacement Procedures

5.13 System Board Components

5.13.1 Memory Modules

Memory may be expanded by adding or replacing up to two DIMMs on the system board.

CAUTION:

Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching
a grounded metal object.

CAUTION:

damage the module.

To remove a memory module, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Remove the expansion board cage (Section 5.9).

4. Rotate the power supply to an upright position.

5. Rotate the drive cage to an upright position.

6. Slide the system board about 1- to 2-inches (2.5- to 5.1-cm) out of the rear of the chassis.
It is not necessary to disconnect any cables from the system board for this operation.

✎

Static electricity can damage the electronic components of the computer or optional boards.

When handling a memory module, be careful not to touch any of the contacts. Doing so can

Compaq Deskpro 4000S and 4000N Personal Computers 5-19

7. Press outward on both latches of the DIMM socket at the same time. This releases the module
and partially pushes it out of the socket.

8. Lift the module from the socket.

Figure 5-14.

To replace a DIMM, reverse the above steps.

When the computer starts up, it will recognize the system memory upgrades and automatically

✎

Removing a Memory Module

CAUTION: Check the position of all cables and wires before raising or lowering the drive cage to prevent
cable damage.

reconfigure the computer.

5-20 Removal and Replacement Procedures

5.13.2 Microprocessor

To remove the microprocessor from the system board, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

CAUTION:

ZIF socket handle. The clip engages the processor socket to hold the heatsink in place.

WARNING:

!

to cool before touching.

When replacing the processor, you must release the heatsink retaining clip before you pull the

To reduce the risk of personal injury from hot surfaces, allow the internal system components

3. Rotate the drive cage to an upright position.

CAUTION:

cable damage.

Check the position of all cables and wires before raising or lowering the drive cage to prevent

4. Remove the heatsink retaining clip 1 by pressing down on the clip’s extended tab until it
releases from the safety catch; then, pivot the tab to disengage it from the safety catch.

5. Lift the heatsink 2 off the processor.

6. Release the processor from the socket by pulling the handle on the ZIF socket out and
upward 4.

7. Lift the processor 5 out of the socket.

Figure 5-15.

Removing the Microprocessor from the System Board

Compaq Deskpro 4000S and 4000N Personal Computers 5-21

CAUTION: When replacing the processor, be sure the clipped corner of the processor (location of Pin 1) is
aligned with the triangular area of the ZIF socket (marked * on the system board). Failure to do so could
result in burning out both the processor and the system board.

The handle on the ZIF socket in the picture may not look identical to the one on the computer.

✎

All handle types perform the same function.

To install the processor, complete the following steps:

1. Lower the processor into the ZIF socket. Ensure that pin 1 on the processor aligns with pin 1 on
the ZIF socket.

2. Push the ZIF handle on the ZIF socket back into place to secure the processor.

3. If the processor has a raised center, install thermal pad number 243226-001 3 on top of the
processor before installing the heatsink.

If the processor has a flat center, install thermal pad number 184616-002 3 on top of the
processor before installing the heatsink.

CAUTION: Using the wrong thermal pad may cause the processor to overheat or short, resulting in failure.

4. Install the heatsink and the heatsink retaining clip.

5. Return the drive cage to the normal position.

CAUTION: Check the position of all cables and wires before raising or lowering the drive cage to prevent
damage.

6. Replace the system unit cover.

5-22 Removal and Replacement Procedures

5.14 Replacement Battery

The real-time clock battery that came with the computer is nonreplaceable and is permanently
installed on the system board.

WARNING:

!

mistreated. The battery is soldered into place and may not be removed. Do not abuse or disassemble. Use
only replacement batteries supplied by Compaq Computer Corporation.

It is important to make a set of backup diagnostic diskettes before you install a new battery.

✎

To install the external real-time battery, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Raise the drive cage to its upright position.

4. Connect the new battery to pins 9 and 12 on the P14 battery header connector. When this battery
is connected, the internal battery is automatically disconnected.

The battery connector is keyed for proper installation.

The system board contains a clock/CMOS lithium battery. The lithium battery may explode if

Compaq Deskpro 4000S and 4000N Personal Computers 5-23

5. Remove the backing from the adhesive on the hook-and-loop fastener strip attached to the
battery, and attach the battery as shown.

Figure 5-16.

6. Return the drive cage to its original position.

7. Replace the system unit cover.

8. Place the sticker contained in the battery kit onto the back of the computer.

9. Reconnect any external devices and plug in the computer.

!

10. Turn on the computer.

11. Run the computer Setup utility to reconfigure the system. Refer to Chapter 2, “Compaq
Utilities.”

Installing the Battery

WARNING: This equipment is designed for connection to a grounded (earthed) outlet. The grounding type
plug is an important safety feature. To avoid the risk of electrical shock or damage to the equipment, do
not disable this feature.

5-24 Removal and Replacement Procedures

5.15 Power Switch Cable Components

This section is subdivided into two parts: the switch cable assembly and the switch mounting bracket
assembly.

5.15.1 Switch Cable Assembly

The switch cable assembly consist of two parts: the switch mounting bracket assembly and the
switch cable.

To remove the switch cable assembly from the chassis, complete the following steps:

1. Prepare the computer for disassembly (Section 5.4).

2. Remove the system unit cover (Section 5.7).

3. Rotate the drive cage to an upright position.

4. Disconnect the switch cable assembly from the system board.

5. Remove the switch mounting bracket assembly from the chassis by squeezing the tab on top of
the bracket and then lifting the bracket up and out of the chassis.

Figure 5-17.

Disconnecting the Switch Cable

Compaq Deskpro 4000S and 4000N Personal Computers 5-25

6. Remove the cable from the cable tie mounted on the side of the chassis.

7. Remove the LED from the power switch bracket by pulling gently on the LED while at the same
time prying open the LED retaining ears.

When installing the LED into a new mounting bracket the black wire should be in the top

✎

socket and the white wire in the bottom socket. This is marked on the rear of the mounting
bracket.

CAUTION: Compaq does not recommend removing the switch from the mounting bracket.

To install the switch cable assembly, reverse the above steps.

Refer to the markings on the front of the chassis for proper placement of the LED lights.

✎

5-26 Removal and Replacement Procedures