Compaq DESKPRO 1000 User Manual
MAINTENANCE
& SERVICE GUIDE
Compaq Deskpro 1000
Series of 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.
1998 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq and Deskpro are registered in the U. S. Patent and Trademark Office.
Microsoft, MS-DOS, Windows, Windows NT, and other names of Microsoft products referenced herein are
trademarks or registered trademarks of Microsoft Corporation.
Intel and Pentium are registered trademarks of Intel Corporation. MMX is a trademark of Intel Corporation.
Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
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.
Maintenance & Service Guide
Compaq Deskpro 1000 Series of Personal Computers
First Edition (January 1998)
Part Number 333806-001
Spare Part Number 333835-001
Compaq Computer Corporation
CPS
C
ONTENTS
preface
Symbols and Conventions.........................................................................................................vii
Technician Note........................................................................................................................viii
System Serial Number..............................................................................................................viii
Locating Additional Information..............................................................................................viii
chapter 1
Product Description
1.1 Compaq Deskpro 1000 Series of Personal Computer Models ...........................................1-2
1.2 Features...............................................................................................................................1-3
1.3 System Design....................................................................................................................1-4
1.3.1 Design Overview .......................................................................................................1-4
1.4 Preloaded Software.............................................................................................................1-5
1.5 Computer Features..............................................................................................................1-5
1.5.1 Front Panel Controls and LEDs.................................................................................1-5
1.5.2 Drive Positions...........................................................................................................1-6
1.5.3 Rear Panel Connectors...............................................................................................1-7
1.6 Enhanced Keyboard............................................................................................................1-8
chapter 2
Troubleshooting
2.1 Power-On Self Test (POST)...............................................................................................2-1
2.1.1 POST Error Messages................................................................................................2-1
2.2 CMOS Setup Utility ...........................................................................................................2-4
2.2.1 Preparing the Computer.............................................................................................2-5
2.2.2 Clearing the Password ...............................................................................................2-5
2.3 Troubleshooting Without Diagnostics................................................................................2-5
2.3.1 Checklist for Solving Minor Problems......................................................................2-5
2.3.2 Power Problems.........................................................................................................2-6
2.3.3 Diskette Drive Problems............................................................................................2-7
2.3.4 Display Problems.......................................................................................................2-8
2.3.5 Printer Problems ........................................................................................................2-9
2.3.6 Hard Drive Problems ...............................................................................................2-10
2.3.7 Hardware Installation Problems...............................................................................2-11
2.3.8 CD-ROM Drive Problems .......................................................................................2-12
2.3.9 Memory Problems....................................................................................................2-12
chapter 3
Illustrated Parts Catalog
3.1 System Unit ........................................................................................................................3-2
3.2 Mass Storage Devices.........................................................................................................3-3
3.3 Cables.................................................................................................................................3-4
3.4 Standard and Optional Boards............................................................................................3-5
3.5 Keyboards...........................................................................................................................3-6
3.6 Miscellaneous Hardware Kit ..............................................................................................3-7
3.7 Miscellaneous Plastics Kit..................................................................................................3-8
Contents iii
3.8 Miscellaneous Parts............................................................................................................3-9
3.9 Shipping Boxes...................................................................................................................3-9
3.10 Documentation .................................................................................................................3-9
chapter 4
Removal and Replacement Preliminaries
4.1 Electrostatic Discharge Information...................................................................................4-1
4.1.1 Generating Static........................................................................................................4-1
4.1.2 Preventing Electrostatic Damage to Equipment ........................................................4-2
4.1.3 Personal Grounding Methods ....................................................................................4-2
4.1.4 Grounding Workstations............................................................................................4-3
4.1.5 Personal Grounding Equipment.................................................................................4-3
4.1.6 Recommended Materials and Equipment..................................................................4-4
4.2 Service Considerations.......................................................................................................4-4
4.2.1 Tools and Software Requirements.............................................................................4-4
4.2.2 Screws........................................................................................................................4-5
4.2.3 Cables and Connectors...............................................................................................4-5
4.2.4 Hard Drives................................................................................................................4-5
4.2.5 Plastic Parts................................................................................................................4-5
4.2.6 Lithium Battery..........................................................................................................4-5
chapter 5
Removal and Replacement Procedures
5.1 Serial Number.....................................................................................................................5-1
5.2 Disassembly/Assembly Sequence ......................................................................................5-2
5.3 Feet.....................................................................................................................................5-3
5.4 Preparation for Disassembly...............................................................................................5-3
5.5 System Unit Cover .............................................................................................................5-4
5.6 Expansion Board ................................................................................................................5-4
5.7 Expansion Board Guide......................................................................................................5-6
5.8 System Board......................................................................................................................5-7
5.9 Graphics Memory...............................................................................................................5-8
5.10 Memory Modules .............................................................................................................5-9
5.10.1 Installing a SIMM Module ....................................................................................5-11
5.10.2 Installing a DIMM Module....................................................................................5-12
5.11 Power Supply..................................................................................................................5-13
5.12 Microprocessor...............................................................................................................5-14
5.12.1 Passive Heat Sink (P55C/166)...............................................................................5-14
5.12.2 Active Heat Sink (P55C/200) ................................................................................5-16
5.13 Front Bezel Assembly ....................................................................................................5-18
5.14 LED Retainer Assembly.................................................................................................5-19
5.15 LED Cables ....................................................................................................................5-20
5.16 Power Button..................................................................................................................5-21
5.17 Bezel Blank ....................................................................................................................5-22
5.18 Replacement Battery.......................................................................................................5-23
5.19 Mass Storage Devices.....................................................................................................5-24
5.19.1 Drive Positions.......................................................................................................5-24
5.19.2 Drive Cage.............................................................................................................5-25
5.19.3 3.5-Inch Drive........................................................................................................5-26
5.19.4 5.25-Inch Drive......................................................................................................5-27
iv Contents
chapter 6
Jumper Information
6.1 System Board Jumpers .......................................................................................................6-1
6.1.1 Power-On Password Jumpers (CPW)........................................................................6-3
6.1.2 Flash EPROM Type Selection (EP)...........................................................................6-4
6.1.3 CPU External Clock (Bus) Frequency (CLK) ...........................................................6-4
6.1.4 CPU to SRAM Data Transacting Mode Selection (SRAM)......................................6-5
6.1.5 Jumper Settings..........................................................................................................6-5
6.1.6 Clearing Configuration ..............................................................................................6-5
6.1.7 Changing the Real-Time Clock (RTC) Battery .........................................................6-5
6.2 Hard Drives ........................................................................................................................6-6
6.2.1 1.6-GB IDE Hard Drive Jumper Settings..................................................................6-6
chapter 7
Utilities
7.1 CMOS Setup Utility ...........................................................................................................7-1
7.1.1 Using the CMOS Setup Utility..................................................................................7-1
7.1.1.1 Safeguarding CMOS Settings...........................................................................7-1
7.1.1.2 Restoring CMOS Settings.................................................................................7-1
7.1.2 Important CMOS Settings .........................................................................................7-1
7.1.2.1 Standard CMOS Setup......................................................................................7-1
7.1.2.2 BIOS Features Setup.........................................................................................7-2
7.1.3 Passwords...................................................................................................................7-2
7.1.3.1 Establishing a Password....................................................................................7-2
7.1.3.2 Entering a Password..........................................................................................7-2
7.1.3.3 Disabling a Password........................................................................................7-2
7.1.3.4 Changing a Password........................................................................................7-3
7.1.3.5 Clearing a Password..........................................................................................7-3
7.1.4 IDE HDD Auto Detection..........................................................................................7-3
7.1.5 Save and Exit Setup...................................................................................................7-3
7.1.6 Exit Without Saving...................................................................................................7-4
7.2 Upgrading the BIOS...........................................................................................................7-4
7.3 Configuring Windows Display and Monitor......................................................................7-4
7.3.1 Supported Resolutions...............................................................................................7-5
7.3.2 Changing Monitor Type Manually in Windows 95..................................................7-5
7.3.3 Setting Graphics Resolution ......................................................................................7-5
7.3.4 Establishing a Password in Windows 95...................................................................7-5
7.4 Diagnostics Software..........................................................................................................7-5
chapter 8
Specifications
8.1 System ................................................................................................................................8-1
8.2 Drives .................................................................................................................................8-5
8.3 Mouse.................................................................................................................................8-7
8.4 Keyboard ............................................................................................................................8-7
8.5 Supported Graphics Resolutions ........................................................................................8-8
appendix A
Connector Pin Assignments
.........................................................................................................
A-1
Contents v
appendix B
Power Cord Set Requirements
General Requirements .............................................................................................................B-1
Country-Specific Requirements ..............................................................................................B-2
appendix C
Hard Drives
Device 0/Device 1 Relationship.........................................................................................C-1
Cable Select .......................................................................................................................C-1
IntelliSafe - SMART.......................................................................................................... C-1
Automatic Soft-Drive Types.............................................................................................. C-2
vi Contents
preface
Maintenance & Service Guide
This
servicing the Compaq Deskpro 1000 Series of Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Deskpro 1000
Series of Personal Computers without notice.
Symbols and Conventions
The following words and symbols mark special messages throughout this guide:
is a troubleshooting guide that can be used for reference when
CAUTION:
equipment or loss of data.
WARNING:
!
result in bodily harm or loss of life.
✎
The following format conventions distinguish elements of the text throughout this guide:
Text set off in this manner presents clarifying information, specific instructions,
commentary, sidelights, or other points of information.
Drive letters that are not in command lines are presented in uppercase type as shown here:
drive A.
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: install, or a:\install.
Commands that are to be entered at the system prompt may be shown on a separate line.
When you need to type information without pressing
information.
When you need to type information
information.
Text set off in this manner indicates that failure to follow directions could result in damage to
Text set off in this manner indicates that failure to follow directions in the warning could
and
press
FILENAME
Enter
, you are directed to "type" the
Enter
, you are directed to "enter" the
.
Compaq 1000 Series of Personal Computers vii
Technician Note
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 indication of component replacement or printed wiring board modifications
may void any warranty or exchange allowances.
CAUTION:
clearance on the front and back of the computer.
WARNING:
!
AC power cord into a properly grounded electrical outlet only.
Only authorized technicians trained by Compaq should attempt to repair this equipment. All
To properly ventilate the computer system, you must provide at least 3-inches (7.62-cm) of
The computer is designed to be electrically grounded. To ensure proper operation, plug the
System Serial Number
The serial number is displayed on the right side of the cover on the right front corner, and above
the expansion board area on the rear of the computer.
Locating Additional Information
The following documentation is available to support the computer:
Compaq Reference Guide
Compaq QuickFind, a subscription reference service
Compaq Safety & Comfort Guide
Compaq Service Advisories and Bulletins
Compaq Service Quick Reference Guide
Compaq Technical Reference Guide
Illustrated Parts Map (poster)
Technical Training Guides
viii Preface
chapter
1
P
RODUCT DESCRIPTION
This chapter describes the model offerings and features of the Compaq Deskpro 1000 Series of
Personal Computers.
Figure 1-1.
Compaq Deskpro 1000 Series of Personal Computers
Compaq Deskpro 1000 Series of Personal Computers 1-1
1.1 Compaq Deskpro 1000 Series of Personal Computer Models
The Compaq Deskpro 1000 Series of Personal Computers is available in desktop configurations
described in the following sections.
Table 1-1
Desktop Models
Configuration
Code Processor Hard Drive Memory
BWF1 P55C/166 1.6 GB 16 MB 256 KB S3 Trio64V2/DX
BWF2 P55C/200 1.6 GB 16 MB 256 KB S3 Trio64V2/DX
✎
All models have maximum expandable memory up to 256 MB.
Internal
Cache Graphics
1-2
Product Description
1.2 Features
Item Description
Processor
Speed (MHz)
Cache
L2 (KB), (write-through, direct mapped) 256
Architecture
CMOS RAM, battery backed
Plug and Play capability
Chipset VIA Apollo 590VP
ROM BIOS Flash memory device
Memory
SIMM, 72-pin, non-parity, 66 MHz, EDO
(SIMMs or DIMMs standard but not both)
Base (MB)
Maximum (MB)
SIMM sockets
Memory
DIMM, 168-pin, non-parity, 66 MHz, SDRAM,
(SIMMs or DIMMs standard but not both)
Base (MB)
Maximum (MB)
DIMM sockets
Bays
3.5-inch Internal
3.5-inch External
5.25-inch External
Diskette drive
Standard 3.5-inch drive bay (MB) 1.44
Hard drive
Standard EIDE with drive fault prediction (GB) 1.6
Expansion slots
PCI/ISA/combination 3/3/1
Graphics
S3 Trio64V2/DX Enhanced 64-bit
Graphics (MB)
I/O ports
Standard Serial (2)
Table 1-2
Features
Intel Pentium Processor with MMX Technology
166
200
PCI/ISA
242-byte
Standard
16
256
4
16
256
2
2
1
2
1
Parallel
USB (2)
Monitor
Keyboard
Mouse
continued
Compaq Deskpro 1000 Series of Personal Computers 1-3
Table 1-2
Item Description
Power supply 200 watt, 115 VAC, 6.0 A/230 VAC, 3.0 A
Power supply fan Standard
Internal piezo speaker Standard
Internal battery Standard
Operating System Windows 95
Two-button mouse Standard
Compaq Enhanced keyboard
with MS Windows-specific keys Standard
continued
1.3 System Design
This section presents a design overview and functional descriptions of the key components of the
Compaq Deskpro 1000 Series of Personal Computers. All replaceable components are identified
in Chapter 3, and removal/replacement instructions are presented in Chapter 5.
1.3.1 Design Overview
The desktop models of the Compaq Deskpro Series of Personal Computers use a conventional
ATX chassis to house the removable system board, expansion boards, power supply, and mass
storage devices.
All internal components are accessible when the cover—held in place by three screws—is
removed. The front bezel is a separate assembly and is attached to the chassis with release latches.
The system board is easily removed from the chassis after the cover is removed. Details of the
disassembly procedure are found in Chapter 5, “Removal and Replacement Procedures.”
A removable 3.5-inch drive cage is located to the left center of the chassis. This drive cage can be
pulled out from the top, after removing the two screws securing it to the chassis, to provide access
to cable connections and to the screws securing the drives to the drive cage. The removable drive
cage accommodates one external diskette drive and two internal hard drives. The fixed 5.25-inch
drive cage is located to the right of the removable cage and holds a maximum of two drives.
Both the removable and the fixed drive cages allow drive installation without the use of rails. Four
screws secure a drive to the drive cage, and ensure proper alignment of the drive within the cage.
Expansion boards are installed vertically into the system board. A single screw secures each
expansion board to the chassis.
The power supply is mounted in the right rear corner of the chassis. The power supply is held in
place by four screws that are installed through the rear panel of the chassis and a single retaining
screw on the inside on the chassis.
1-4 Product Description
1.4 Preloaded Software
This computer is shipped with Windows 95 installed as the operating system.
The following software is preloaded on the computer:
Compaq Online Safety & Comfort Guide
Microsoft Windows 95
1.5 Computer Features
1.5.1 Front Panel Controls and LEDs
Figure 1-2.
Diskette Drive Activity Light Turns on when the diskette drive is reading or writing.
1
Power-On Light Turns on when the computer is turned on.
2
Hard Drive Activity Light Turns on when the hard drive is reading or writing.
3
Diskette Eject Button Ejects a loaded diskette.
4
Power Button Turns the computer on and off.
5
Front Panel Controls and LEDs
When the hard drive light 3 or diskette drive light 1 is on, the drive is either reading information
from the disk or storing information on the disk.
Compaq Deskpro 1000 Series of Personal Computers 1-5
1.5.2 Drive Positions
Figure1-3.
One 3.5-inch 1.44-MB diskette drive
1
One 3.5-inch third-height drive bay for optional drive
2
One 3.5-inch third-height drive bay for primary hard drive
3
One 5.25-inch half-height drive bay for optional drive
4
One 5.25-inch half-height drive bay for optional drive
5
Drive Positions on the Compaq Deskpro 1000 Desktop Computer
1-6 Product Description
1.5.3 Rear Panel Connectors
Figure 1-4.
Voltage Select Switch (115 V U.S. or 230 V to match geographical requirements)
1
Power Cord Connection
2
Mouse Connector
3
Keyboard Connector
4
Universal Serial Bus (USB) Connectors
5
Serial Connector
6
Parallel Port Connector
7
Serial Connector
8
Monitor Connector
9
Rear Panel Connectors
Compaq Deskpro 1000 Series of Personal Computers 1-7
1.6 Enhanced Keyboard
Figure 1-5.
Ctrl Used in combination with another key. Its effect depends on the
1
Windows Logo Keys Opens the Windows Start menu. Used in combination with another
2
Alt Used in combination with another key. Its effect depends on the
3
Windows Application Key Used (like the right mouse button) to open pop-up menus in a
4
Enhanced Keyboard
software application you are using.
key. Its effect depends on the software application you are using.
software application you are using.
Microsoft Office application. May perform other functions in other
software applications.
The keyboard has feet on the bottom that enable the user to tilt the keyboard to a more
comfortable typing angle.
Figure 1-6.
1-8 Product Description
Keyboard Tilt Feet
chapter
2
T
ROUBLESHOOTING
This chapter provides troubleshooting information for the Compaq Deskpro 1000 Series of
Personal Computers including:
Power-On Self Test (POST)—POST messages listed in Table 2-1 include a description of
the error, the probable cause, and the recommended action that should be taken to resolve
the error condition.
CMOS Setup Utility—Computer Setup options are available through the CMOS Setup
Utility.
Troubleshooting Without Diagnostics—Tables 2-2 through 2-9 include a
problem/solution checklist for power, diskette drive, display, printer, hard drive, CDROM, and memory.
Adherence to the procedures and precautions described in this chapter is essential for proper
service.
✎
Some features may not be available on all models.
2.1 Power-On Self Test (POST)
The POST procedure is embedded in the system BIOS and performs a series of diagnostic tests
that automatically run when the system is turned on. POST checks the following assemblies to
ensure that the computer system is functioning properly:
Keyboard
Mouse
System board
Memory modules
Video
Diskette drives
Hard drives
Power supply
Controllers
If POST detects an error in the system, an error condition is indicated by an audible and/or visual
message. Table 2-1 explains the error codes and suggests a recommended course of action.
2.1.1 POST Error Messages
An error message may be followed by a prompt to press F1 to continue or press DEL to enter
Setup.
Compaq Deskpro 1000 Series of Personal Computers 2-1
Table 2-1
Power-On Self-Test Messages
Message Probable Cause Recommended Action
The computer
beeps:
the beep consists of
continuous long
beeps
The computer
beeps:
the beep consists of
one long beep
followed by two short
beeps
BIOS ROM
Checksum Error System Halted
CMOS Battery
Failed
CMOS Checksum
Error - Defaults
Loaded
CPU at nnnn Displays the running speed of
Display Switch Is Set
Incorrectly
Press Esc to Skip
Memory Test
Floppy Disk(s) Fail Cannot find or initialize the
Hard Disk Install
Failure
No system memory is present. Add system memory.
A video error has occurred
and the BIOS cannot initialize
the video screen to display
any additional information.
The checksum of the BIOS
code in the BIOS chip is
incorrect, indicating the BIOS
code may have become
corrupt.
CMOS battery is no longer
functional.
The checksum of CMOS is
incorrect, so the system loads
the default equipment
configuration.
the CPU.
The display switch on the
system board can be set to
either monochrome or color.
This message indicates the
switch is set to a different
setting than indicated in
Setup.
The system is testing memory. The user may press Esc to skip the full memory
floppy drive controller or the
drive.
Cannot find or initialize the
hard drive controller or the
drive.
Ensure the VGA card is installed correctly and that
the monitor cable is well connected.
Replace the BIOS.
Replace the battery.
A checksum error may indicate that CMOS has
become corrupt. This error may have been caused
by a weak battery. Check the battery and replace
if necessary.
None.
Determine which setting is correct, and then either
turn off the system and change the jumper, or
enter Setup and change the Video selection.
test.
Ensure the controller is installed correctly. If no
diskette drives are installed, be sure the Diskette
Drive selection in Setup is set to None.
This will occur only if the BIOS supports low level
format. Current BIOS does not support low-level
format.
Continued
2-2 Troubleshooting
Table 2.1
Continued
Message Probable Cause Recommended Action
Hard Disk(s)
Diagnosis Failure
Keyboard Error or
No Keyboard
Present
Keyboard is Locked
Out - Unlock the
Key
Memory Test This message displays during
Memory Test Fail If POST detects an error
Primary Master Hard
Disk Fail
Primary Slave Hard
Disk Fail
Secondary Master
Hard Disk Fail
Secondary Slave
Hard Disk Fail
The system has run specific
disk diagnostic routines. This
message appears if one or
more hard disks return an
error when the diagnostics
run.
Cannot initialize the keyboard. Ensure the keyboard is attached correctly and no
This message usually
indicates that one or more
keys have been pressed
during the keyboard tests.
a full memory test, counting
down the memory areas being
tested.
during memory testing,
additional information appears
giving specifics about the type
and location of the memory
error.
POST detects an error in the
primary master IDE hard drive.
POST detects an error in the
primary slave IDE hard drive.
POST detects an error in the
secondary master IDE hard
drive.
POST detects an error in the
secondary slave IDE hard
drive.
Hard disk may be damaged, and may need to be
replaced.
keys are pressed during POST. To purposely
configure the system without a keyboard, set the
error halt condition in Setup to Halt on All but
Keyboard. The BIOS then ignores the missing
keyboard during POST.
Ensure no objects are resting on the keyboard.
None.
If this happens often, the memory module may
need to be replaced.
Ensure the controller is installed correctly, the
cable is attached correctly, and the hard disk
jumper is set to primary master. If no hard drive is
installed, be sure the hard drive selection in Setup
is set to None.
Ensure the controller is installed correctly, the
cable is attached correctly, and the hard disk
jumper is set to primary slave. If no hard drive is
installed, be sure the hard drive selection in Setup
is set to None.
Ensure the controller is installed correctly, the
cable is attached correctly, and the hard disk
jumper is set to secondary master. If no hard drive
is installed, be sure the hard drive selection in
Setup is set to None.
Ensure the controller is installed correctly, the
cable is attached correctly, and the hard disk
jumper is set to secondary slave. If no hard drive
is installed, be sure the hard drive selection in
Setup is set to None.
Compaq Deskpro 1000 Series of Personal Computers 2-3
2.2 CMOS Setup Utility
The Award BIOS chip contains the ROM setup information of your computer and serves as an
interface between the processor and the rest of the components on the motherboard.
The CMOS Setup Utility, which is built into the BIOS and stored in the CMOS RAM, is executed
when the user changes the battery or the existing settings, or when the system detects an error
during POST and asks you to run the Setup utility. See Chapter 7, “Utilities,” for instructions on
how to use this utility.
✎
To execute the CMOS Setup Utility:
1. Shut down the operating system.
2. Turn the computer off, then on.
3. Press the Delete key when the message “Press DEL to enter Setup” appears on the lower right
4. Use the arrow keys to highlight the setup feature you want to change.
5. Press Enter to open the selected setup feature.
6. Use the arrow keys to highlight the value you want to change.
7. Use the Page Up or Page Down keys to change the selected value.
8. Follow the on-screen instructions to save the changes and exit, or to exit the utility without
✎
The CMOS Setup Utility includes the following options:
Before removing or replacing a subassembly, safeguard the CMOS settings. Write
them down, make a print screen of each CMOS setup page, or use a third-party
CMOS rescue software to store the settings in a file on a write-protected diskette.
hand corner of the screen.
saving any changes.
Failure to configure the system correctly can result in loss of data and reduced
hard drive capacity.
Standard CMOS Setup
BIOS Features Setup
Chipset Features Setup
Power Management Setup
PnP/PCI Configuration Setup
Load BIOS Defaults
Load Setup Defaults
Integrated Peripherals
Supervisor Password
User Password
IDE HDD Auto Detection
Save and Exit Setup
Exit without Saving
2-4 Troubleshooting
2.2.1 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.
CAUTION:
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 use it to log error messages.
4. Install loop-back and terminating plugs for complete testing.
5. Run a diagnostics utility.
Always ensure that the power is off before disconnecting or reconnecting the mouse, keyboard,
2.2.2 Clearing the Password
If you have to clear the password before changing any of the CMOS settings, refer to Chapter 7,
“Utilities,” for instructions.
2.3 Troubleshooting Without Diagnostics
This section describes some simple, preliminary tests and guidelines for troubleshooting the
computer without using diagnostics software.
✎
Diagnostics software is not included with this computer. Compaq diagnostics
software, Version PC 10.25A, is available at www.compaq.com. Third-party
diagnostics software is also available.
2.3.1 Checklist for Solving Minor Problems
If you encounter some minor problem with the computer or a software application, go through the
following checklist for possible solutions before running any of the diagnostic utilities:
Is the computer connected to a working power outlet?
Is the computer turned on and the power light illuminated?
Are all cables connected properly and seated?
Is the monitor turned on and the power light illuminated?
If the monitor is dim, turn up the brightness and contrast controls of the monitor.
Press and hold any key. If the system beeps, then the keyboard should be operating
correctly.
Are all of the necessary device drivers installed?
Have all printer drivers been installed for each application?
Is the CONFIG.SYS file correct?
Is the AUTOEXEC.BAT file (MS-DOS) or STARTUP.CMD file (OS/2) correct?
Compaq Deskpro 1000 Series of Personal Computers 2-5
Was a nonbootable diskette loaded in the diskette drive at power-up?
Are all switch settings correct?
Have all jumper settings been set as instructed by the configuration utility?
Was Computer Setup run after installing options (memory, disk drives, expansion
boards, etc.) and before installing industry standard architecture (ISA) boards?
2.3.2 Power Problems
This section identifies some quick checks for power-related problems.
Problem Possible Solution
Computer will not turn on. Ensure that the computer is connected to a power source.
Computer does not automatically
display the date and time.
(Date/Time not set)
Computer powered off
automatically.
Table 2-2
Solutions for Power Problems
Cables to the external power source may be unplugged. Ensure that
cables connecting the computer and the external source are plugged
in properly.
A PCI or ISA card that has been installed may be defective. Remove
any adapter card that was just installed.
The real-time clock (RTC) battery may need to be replaced. See
Chapter 5 for replacement procedures.
The unit temperature may have been exceeded. Check the fan for
function and blockage.
Check to ensure that the power cord is securely plugged into the wall
and the unit.
2-6 Troubleshooting
2.3.3 Diskette Drive Problems
This section identifies some quick checks for diskette drive–related problems.
Solutions for Diskette Drive Problems
Problem Possible Solution
Diskette drive light stays on. 1. Diskette may be damaged. In Windows 95, run SCANDISK. At the
Diskette drive cannot write to
a diskette.
Diskette drive cannot read a
diskette.
A problem has occurred with a
disk transaction
Nonsystem disk message. Remove the diskette from the drive and press any key.
Drive not found. Check the cables for loose connections.
Table 2-3
Start menu, highlight Programs, select Accessories, select System
Tools, then SCANDISK.
2. Diskette could be installed incorrectly. Remove the diskette and
reinsert.
3. Software program may be damaged. Replace the program
diskettes.
4. Drive cable is not properly connected. Reconnect drive cable.
1. Diskette is not formatted. Format the diskette.
2. Diskette is write-protected. Either use another diskette that is not
write-protected or disable the write protection on the diskette.
3. Writing to the wrong drive. Check the drive letter in the path
statement.
4. Not enough space is left on the diskette. Use another diskette to
write the information.
5. Diskette write control is disabled. Check the security feature
settings in Setup.
1. Diskette is not formatted. Format the diskette.
2. Using the wrong diskette type for the drive type. Use a diskette that
is compatible with the drive.
3. Reading the wrong drive. Check the drive letter in the path
statement.
4. Diskette drive has been disabled by Computer Setup. Run
Computer Setup and enable the diskette drive.
The directory structure is bad, or there is a problem with a file. In
Windows 95, run SCANDISK. At the Start menu, highlight Programs,
select Accessories, select System Tools, then SCANDISK.
Compaq Deskpro 1000 Series of Personal Computers 2-7
2.3.4 Display Problems
This section identifies some quick checks for display-related problems.
Problem Possible Solution
Screen is blank.
Graphics colors are wrong.
Characters are dim.
Monitor does not function properly
when used with the energy saver
features.
Blurry display or requested
resolution cannot be set.
The picture is broken up; it rolls,
jitters, or blinks.
Garbled characters on the screen
are mixed with text.
Screen goes blank.
Monitor overheats.
Cursor will not move using the
arrow keys on the numeric keypad.
Table 2-4
Solutions for Display Problems
1. Monitor is not turned on and the monitor light is not on. Turn on the
monitor and check that the monitor light is on.
2. Screen save has been initiated. Press any key or move the mouse
to light the screen.
3. Check the cable connection from the monitor to the computer and
check the electrical outlet.
4. The brightness need adjusting. Adjust the brightness control.
5. The energy saver feature has been enabled. Hit any key or type
the password.
6. The RGB (Red, Green, Blue) input switch on the back of the
monitor is incorrectly set. Set the monitor's input switch to 75 ohms
and, if there is a sync switch, set it to External.
7. If a fixed-sync monitor is used, be sure that the monitor can accept
the same sweep rate as the resolution chosen.
1. Ensure that the Red, Green, and Blue BNC cables are connected
to the corresponding monitor connectors.
2. Be sure the monitor's RGB inputs are set to 75 ohms.
1. Adjust the monitor's brightness and contrast controls.
2. Check that the video cable is securely connected to the graphics
card and monitor.
3. Set the RGB switch (and sync options, if available) to 75 ohms,
with the sync set to External. Refer to the documentation included
with the monitor.
Monitor without the energy saver feature is being used with energy
saver features enabled. Disable the monitor energy saver feature.
If the graphics controller was upgraded, the correct display drivers
may not be loaded. Install the correct display drivers on the diskette
included in the upgrade kit.
1. Be sure the monitor cable is securely connected to the computer.
2. In a 2-monitor system or if another monitor is in close proximity, be
sure the monitors are not interfering with each other's magnetic
field by moving them apart.
The ANSI.SYS driver is not in the
ANSI.SYS driver to the
DEVICE = C:\CPQDOS\ANSI.SYS
A screen blanking utility may be installed or energy saver features are
enabled. Press any key or type password.
There is not enough ventilation space for proper airflow. Leave at
least 3 inches (7.6-cm) of ventilation space. Also, be sure there is
nothing on top of the monitor to obstruct air flow.
The Num Lock key is on. Press the Num Lock key. The Num Lock
light should not be on when you want to use the arrow keys.
CONFIG.SYS
CONFIG.SYS
file by adding the following line:
file. Add the
2-8 Troubleshooting
2.3.5 Printer Problems
This section identifies some quick checks for printer-related problems.
Problem Possible Solution
Printer will not print. 1. Printer is not turned on and online. Turn the printer on and make
Printer will not turn on. The cables may not be connected properly. Reconnect all cables and
Prints garbled information. 1. The correct printer drivers for the application are not installed.
Printer is offline. The printer may be out of paper. Check the paper tray and refill it if it
Table 2-5
Solutions for Printer Problems
sure it is online.
2. The correct printer drivers for the application are not installed.
Install the correct printer drivers for the application.
3. If the computer is on a network, you may not have made the
connection to the printer. Make the proper network connections to
the printer.
check the power cord and electrical outlet.
Install the correct printer drivers for the application.
2. The cables may not be connected properly. Reconnect all cables.
is empty. Select online.
Compaq Deskpro 1000 Series of Personal Computers 2-9
2.3.6 Hard Drive Problems
This section identifies some quick checks for hard drive–related problems.
Problem Possible Solution
Hard drive error occurs. Hard disk has bad sectors or has failed. Use a utility to locate and
Disk transaction problem. Either the directory structure is bad or there is a problem with a file. At
Drive not found. 1. Cable could be loose. Check cable connections.
Nonsystem disk message. 1. The system is trying to start from a diskette that is not bootable.
Hard drive operation seems slow. The hard disk files may be fragmented.
Table 2-6
Solutions for Hard Drive Problems
block usage of bad sectors. If necessary, reformat the hard disk.
the C:\> prompt, run SCANDISK to check for problems. If problems
exist, run SCANDISK /AUTOFIX to correct the problems.
2. The system may not have automatically recognized a newly
installed device. If Windows 3.1 is installed, run Computer Setup
and identify the new device. If Windows 95 is installed, run Device
Manager and identify the device.
3. If the drive is a secondary drive that has just been installed on the
same controller as the primary drive, verify that the jumpers for
both drives are set correctly.
Remove the diskette from the diskette drive.
2. The system is trying to start from the hard drive but the hard disk
has been damaged. Insert a bootable diskette into the diskette
drive and restart the computer with Ctrl+Alt+Del.
3. Diskette boot has been disabled in Computer Setup. Run
Computer Setup and enable diskette boot.
At the C:\> prompt, run SCANDISK to check for problems. If problems
exist, run SCANDISK /F to correct the problems. If a large number of
lost allocation units is found, run the MS-DOS defragmentation
program DEFRAG. See the Microsoft Windows & MS-DOS 6.2 User's
Guide for more information.
Alternatively, at the C:\> prompt, run SCANDISK to check for
problems. If problems exist, run SCANDISK /AUTOFIX to correct the
problems. If a large number of lost allocation units is found, run the
MS-DOS defragmentation program DEFRAG. Type HELP SCANDISK
for more information.
2-10 Troubleshooting
2.3.7 Hardware Installation Problems
This section identifies some quick checks for hardware problems.
Solutions for Hardware Installation Problems
Problem Possible Solutions
A new device is not recognized as
part of the computer system.
The computer supports Plug and
Play, but the hardware
configuration settings in Computer
Setup do not match the settings in
Windows 95 Device Manager.
1. The Computer Setup utility has not been run to configure the new
device. Run the Computer Setup utility.
2. When the system advised you of changes to the configuration, you
did not accept them. Reboot the computer and follow the
instructions for accepting the changes.
3. The system may not have automatically recognized the new device.
If Windows 3.1 is installed, run Computer Setup and identify the
new device. If Windows 95 is installed, run Device Manager and
identify the device.
4. A Plug and Play board may not automatically configure when added
if the default configuration conflicts with other devices. Run
Computer Setup (Windows 3.1 installed) or run Device Manager
(Windows 95 installed) to deselect the automatic settings for the
board and choose a basic configuration that doesn’t cause a
resource conflict.
5. The cables for the new external device are loose or the power
cables are unplugged. Check all cables.
6. The power switch for the new external device is not turned on. Turn
off the computer, turn on the external device, and then turn the
computer on to integrate the new device with the computer.
7. If the drive is a secondary drive that has just been installed on the
same controller as the primary drive, verify that the jumpers for both
drives are set correctly.
In Windows 95, onboard serial devices that are assigned to ports other
than COM1 or COM2, have their configuration saved statically in
CMOS. When the system is rebooted, the ROM configures the device
to the static setting; when Windows 95 loads, it configures the device
to the configuration set via Device Manager. In such cases, the
configuration shown when CMOS Setup is run does not match what
was set up via Device Manager.
If these devices must be configured a certain way before Windows 95
loads, then the serial port devices on the system should only be
configured to COM1 or COM2 resources. If the system has two serial
devices plus a modem, then the first serial device can be COM1 or
COM2 or disabled, the modem can be COM1 or COM2 or disabled,
and the second serial device can be COM4 or disabled.
Table 2-7
Compaq Deskpro 1000 Series of Personal Computers 2-11
2.3.8 CD-ROM Drive Problems
This section identifies some quick checks for CD-ROM drive problems.
Problem Possible Solution
Cannot read compact disc. 1. CD is not properly seated in the drive. Eject the CD, correctly seat
System will not boot from CD-ROM
drive.
Cannot eject compact disc (trayload unit only).
CD-ROM device is not detected;
driver is not loaded.
Table 2-8
CD-ROM Drive Problems
it in the drive, then reload.
2. CD has been loaded upside down. Eject the CD, turn it over, then
reload.
1. The CD-ROM boot is not enabled through the CMOS Setup utility.
Run the CMOS Setup utility and set the drive priorities.
2. Ensure that drive cabling and jumpers are set correctly. To boot a
SCSI drive, the drive ID number must be set to 0.
CD is not properly seated in the drive. Turn off the computer and
insert a thin metal rod into the emergency eject hole and push firmly
(a straightened paper clip can be used). Slowly pull the tray out from
the drive until the tray is fully extended, then remove the CD.
CD-ROM drive is not connected properly. Open the computer and
check to see that the drive cable is connected properly and the drive
jumpers are set correctly.
✎
Some features may not be available on all models.
2.3.9 Memory Problems
This section identifies some quick checks for memory-related problems.
Problem Possible Solution
Out of Memory error. 1. In Windows 95, use the Device Manager to check memory
Memory count during POST is
wrong.
Insufficient memory error during
operation
Table 2-9
Memory Problems
configuration.
2. The computer has run out of memory to run the application. Check
the application documentation to determine the memory
requirements.
The memory modules may not be installed correctly. Check that the
memory modules have been installed correctly and that mixed EDO
and FPM DRAM are in the correct bank, then run the Configuration
utility. (If the system contains mixed EDO and FPM DRAMs, the EDO
pair is one bank and the FPM pair is another bank.)
1. Too many Terminate and Stay Resident programs (TSRs) are
installed. Delete any unnecessary TSRs.
2. The computer has run out of memory for the application. Check
the memory requirements for the application or add more memory
to the computer.
2-12 Troubleshooting
chapter
3
I
LLUSTRATED PARTS CATALOG
This chapter provides an illustrated parts breakdown and a reference for spare parts for the
Compaq Deskpro 1000 Series of Personal Computers.
Figure 3-1.
Compaq Deskpro 1000 Series of Personal Computers
Compaq Deskpro 1000 Series of Personal Computers 3-1
3.1 System Unit
Figure 3-2.
System Unit
Table 3-1
System Unit Spare Parts
Description Spare Part Number Warranty Tier
System unit cover 333833-001 A
1
Power supply, 200W (Includes fan) 333818-001 A
2
Drive Cage 333838-001 A
3
LED holder (reference only; part of Miscellaneous Plastics
4
kit)
Base pan (chassis assembly) 333834-001 A
5
Front bezel. (Includes power switch cap and bezel blanks) 333839-001 A
6
Feet (reference only; part of Miscellaneous Plastics kit)
7
3-2 Illustrated Parts Catalog
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