HP COMPAQ PROLINEA User Manual
Notice
The information in this guide is subject to change without notice.
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Copyright 1995 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Deskpro, LTE, Contura
Registered U. S. Patent and Trademark Office.
ProLinea is a trademark of Compaq Computer Corporation.
Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.
Windows is a trademark 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
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MAINTENANCE AND SERVICE GUIDE
COMPAQ PROLINEA FAMILY OF PERSONAL COMPUTERS
DESKTOP 3 SLOT/3 BAY
DESKTOP 4 SLOT/4 BAY
First Edition (February 1995)
Spare Part Number 172638-001
Documentation Part Number 172834-001
Preface
This Maintenance and Service Guide is a troubleshooting guide that can be
used for reference when servicing the Desktop 3 slot/3 bay and Desktop 4
slot/4 bay models of the Compaq ProLinea Family of Personal Computers.
Additional information is available in the SERVICE QUICK REFERENCE GUIDE.
Compaq Computer Corporation reserves the right to make changes to the
Compaq ProLinea Family of Personal Computers without notice.
Symbols
The following words and symbols mark special messages throughout this
guide:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Text set off in this manner indicates that failure to follow directions in
the warning could result in bodily harm or loss of life.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Text set off in this manner indicates that failure to follow
directions could result in damage to equipment or loss of data.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
IMPORTANT: Text set off in this manner presents clarifying information or
specific instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or
interesting points of information.
Technician Notes
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Only authorized technicians trained by Compaq should attempt to repair
this equipment. All troubleshooting and repair procedures are detailed to
allow only subassembly/module level repair. Because of the complexity of
the individual boards and subassemblies, no one should attempt to make
repairs at the component level or to make modifications to any printed
wiring board. Improper repairs can create a safety hazard. Any indication
of component replacement or printed wiring board modifications may void
any warranty or exchange allowances.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
To properly ventilate your system, you must provide at least 3 inches
(7.62 cm) of clearance on the front and back of the computer.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
The computer is designed to be electrically grounded. To ensure proper
operation, plug the AC power cord into a properly grounded electrical
outlet only.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
System Serial Number
The system serial number is displayed in two locations on the Compaq
ProLinea Family of Personal Computers: on the right side of the computer
near the front, and below the top expansion slot on the rear of the
computer.
Locating Additional Information
The following documentation is available to support the Compaq ProLinea
Family of Personal Computers:
o ABOUT YOUR COMPUTER (online document)
o COMPAQ DICTIONARY (online document)
o COMPAQ QUICK SETUP GUIDE
o COMPAQ BEYOND SETUP GUIDE
o MICROSOFT WINDOWS & MS-DOS 6 USER'S GUIDE
o Technical Training Guides
o Compaq Service Advisories and Bulletins
o COMPAQ QUICKFIND
o TECHNICAL REFERENCE GUIDE
o COMPAQ SERVICE QUICK REFERENCE GUIDE
Chapter 1. Product Description
Chapter 1.1 Models and Features
The Compaq ProLinea Family of Personal Computers introduces a new
generation of desktop computers designed for the business environment. The
family includes Desktop 3 slot/3 bay (DT3) and Desktop 4 slot/4 bay (DT4)
models. This chapter describes the model offerings and features of the DT3
and DT4 computers.
Chapter 1.2 Models
The Compaq ProLinea Family of Personal Computers is available in the
desktop models described in the following sections.
Compaq ProLinea Personal Computer DT3 Models
The Compaq ProLinea Personal Computer is available in the DT3 models
described in Table 1-1. These desktop computers have two ISA expansion
slots, one shared PCI/ISA expansion slot, one Compaq option slot, and
three mass storage bays. All models include a 3.5-inch diskette drive.
Table 1-1. Compaq ProLinea Personal Computer DT3 Models *
===========================================================================
Model Processor Drive Memory Graphics Cache CD-ROM
===========================================================================
ProLinea 450 486DX2/50 None 8 MB PCI Local No
ProLinea 450 486DX2/50 270 MB 8 MB PCI Local No
ProLinea 450 486DX2/50 270 MB 4 MB PCI Local No
Hard
Bus
Bus
Bus
ProLinea 466 486DX2/66 None 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 270 MB 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 420 MB 8 MB PCI Local No
Bus
ProLinea 4100 486DX4/100 None 8 MB PCI Local 128 KB No
Bus
ProLinea 4100 486DX4/100 270 MB 8 MB PCI Local 128 KB No
Bus
ProLinea 4100 486DX4/100 420 MB 8 MB PCI Local 128 KB No
Bus
ProLinea 575 586/75 None 8 MB PCI Local 256 KB No
Bus
ProLinea 575 586/75 270 MB 8 MB PCI Local 256 KB No
Bus
ProLinea 575 586/75 420 MB 8 MB PCI Local 256 KB No
Bus
--------------------------------------------------------------------------* Not all models are available in all geographic regions.
===========================================================================
Compaq ProLinea Personal Computer DT4
Models
The Compaq ProLinea Personal Computer is available in the DT4 models
described in Table 1-2. These desktop computers have two ISA expansion
slots, two shared PCI/ISA expansion slots, one Compaq option slot, and
four mass storage bays. All models include a 3.5-inch diskette drive.
Table 1-2. Compaq ProLinea Personal Computer DT4 Models *
===========================================================================
Hard
Model Processor Drive Memory Graphics Cache CD-ROM
===========================================================================
ProLinea 450 486DX2/50 None 8 MB PCI Local No
Bus
ProLinea 450 486DX2/50 270 MB 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 None 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 270 MB 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 420 MB 8 MB PCI Local No
Bus
ProLinea 466 486DX2/66 420 MB 8 MB PCI Local Yes
Bus
ProLinea 4100 486DX4/100 None 8 MB PCI Local 128 KB No
Bus
ProLinea 4100 486DX4/100 420 MB 8 MB PCI Local 128 KB No
Bus
ProLinea 4100 486DX4/100 420 MB 8 MB PCI Local 128 KB Yes
Bus
ProLinea 575 586/75 None 8 MB PCI Local 256 KB No
Bus
ProLinea 575 586/75 420 MB 8 MB PCI Local 256 KB No
Bus
ProLinea 575 586/75 420 MB 8 MB PCI Local 256 KB No
Bus
ProLinea 575 586/75 720 MB 16 MB QVision 256 KB No
2000+
ProLinea 575 586/75 720 MB 16 MB PCI Local 256 KB No
Bus
ProLinea 590 586/90 None 8 MB PCI Local 256 KB No
Bus
ProLinea 590 586/90 420 MB 8 MB PCI Local 256 KB No
Bus
ProLinea 590 586/90 420 MB 8 MB PCI Local 256 KB Yes
Bus
ProLinea 590 586/90 720 MB 16 MB QVision 256 KB No
2000+
ProLinea 590 586/90 720 MB 16 MB PCI Local 256 KB No
Bus
--------------------------------------------------------------------------* Not all models are available in all geographic regions.
===========================================================================
Chapter 1.3 Standard Features
The Compaq ProLinea Desktop Personal Computers have the following standard
features:
o 486DX2/50, 486DX2/66, 486DX4/100, 586/75, and 586/90 processors
o 4 MB (SIMM), 8 MB (soldered down) or 16 MB (soldered down) memory,
depending on model (see Table 1-4 for memory upgrade schedule)
o 128 KB write back cache on 486DX4/100 models, 256 KB write back cache on
586/75 and 586/90 models
o 270, 420, or 720 MB IDE IntelliSafe hard drive (models available
without hard drive)
o Enhanced PCI local bus graphics:
- PCI Local Bus Integrated Graphics Controller on selected 486 and 586
models
- QVision 2000+ Graphics Controller on selected 586 models
o DT3 form factor includes: one PCI/ISA shared slot, two ISA slots, Compaq
option slot, one internal third-height drive bay, and two external
half-height drive bays
o DT4 form factor includes: two PCI/ISA shared slots, two ISA slots,
Compaq option slot, one internal third-height drive bay, one external
third-height drive bay, and two external half-height drive bays
o CD-ROM drive with Enhanced Business Audio on selected models
o PCI local bus IDE interface for hard drive and CD-ROM (up to 4 drives)
o Power conservation features
o Plug and play design
o One mouse port (PS/2 style Compaq mouse)
o Preloaded software
o Diagnostics/Setup software
o Security management
o Three-year limited warranty
Preloaded Software
The following software is preloaded on the Compaq ProLinea Desktop
Personal Computers:
o Microsoft Windows 3.1
o Diagnostics for Windows
o MS-DOS 6
o Windows Sound System 2.0 (CDS models only)
o ESS 688 Audio Drivers (CDS models only)
o Compaq Welcome Center, Compaq Control Center, and Compaq Learning Center
o Drivers for graphics and IDE CD-ROM
o Power Management
o Security Management (see Section 1.6)
o Online documentation
Security Management
The following security management features are designed into the Compaq
ProLinea Desktop Personal Computers. These features can help prevent
unauthorized access to critical data and theft of the computer.
o Cable lock provision allows the user to physically secure the computer
hardware to protect against theft.
o Diskette boot control prevents the computer from being booted from a
diskette.
o Diskette drive control allows disabling of the diskette drive.
o Diskette write control prevents unauthorized writing of data to a
diskette.
o Hard drive control allows disabling of the hard drive.
o Flash ROM lock prevents unauthorized changes to the flash ROM.
o Keyboard password allows the computer to boot up but prevents data input
until the password is entered.
o Parallel interface control prevents transfer of data through the
parallel interface connector.
o Power-on password prevents unauthorized persons from booting up the
computer.
o QuickLock/QuickBlank allows the user to lock the keyboard and/or blank
the screen.
o Serial interface control prevents transfer of data through the serial
interface connector.
o Setup password prevents unauthorized changes to the system configuration.
Chapter 1.4 Options
The options that are available from Compaq for the Compaq ProLinea Family
of Personal Computers are described in the following sections.
Processor Upgrade
The processors in Compaq ProLinea Family of Personal Computers can be
upgraded according to the schedule in Table 1-3. Upgrade kits are
available from Compaq.
Table 1-3. Processor Upgrades
===========================================================================
Base processor Can be upgraded to
===========================================================================
486DX2/50 486DX2/66, or 486DX4/100
486DX2/66 486DX4/100
586/75 586/90
===========================================================================
System Memory Options
The system memory options that are available from Compaq for the Compaq
ProLinea Family of Personal Computers are listed below. The memory modules
are SIMM, 70ns, without parity.
o 4 MB memory module
o 8 MB memory module
o 16 MB memory module
o 32 MB memory module
System memory can be upgraded according to the schedule in Table 1-4:
Table 1-4. Upgrade Schedule
===========================================================================
Processor Standard Memory Expandable to SIMM Sockets
===========================================================================
486DX2/50 4 MB 128 MB 4
486DX2/50 8 MB 136 MB 4
486DX2/66 8 MB 136 MB 4
486DX4/100 8 MB 136 MB 4
586/75 8 MB 192 MB 6
586/75 16 MB 192 MB 6
586/90 8 MB 192 MB 6
586/90 16 MB 192 MB 6
===========================================================================
Secondary Cache
Secondary cache memory option cards (128 KB or 256 KB) are available for
the 486DX2/50, 486DX2/66, and 486DX4/100 models of the Compaq ProLinea
Family of Personal Computers.
NOTE: All 586-class models have 256 KB secondary cache soldered to the
system board.
Mass Storage Options
The following mass storage options are available from Compaq for the
Compaq ProLinea Family of Personal Computers:
o 1.2 MB diskette drive, 5.25-inch, half-height
o 1.44 MB diskette drive, 3.5-inch, third-height
o 270 MB IDE hard drive
o 420 MB IDE hard drive
o 540 MB IDE hard drive
o 720 MB IDE hard drive
o 1 GB IDE hard drive
o 535 MB SCSI-2 hard drive
o 1.05 GB SCSI-2 hard drive
o 2.1 GB SCSI-2 hard drive
o 120/250 MB tape drive with compression
o 340/680 MB tape drive
o 525 MB tape drive
o 1.2 GB ACA tape drive
o 2/8 GB Turbo DAT tape drive
o Internal Quad-Speed IDE CD-ROM drive
Monitor Options
The following monitor options are available from Compaq for the Compaq
ProLinea Family of Desktop Personal Computers:
o QVision 200 Color Monitor with AssetControl
o QVision 172 Color Monitor with AssetControl
o VGA 14-Inch Monochrome Monitor
o SVGA Color Monitor with low emissions and energy saver
o VGA Color Monitor with low emissions
o Compaq 14-Inch 1024 Color Monitor
o Compaq 151 FS Color Monitor with low emissions and AssetControl
o Compaq 171 FS Color Monitor with low emissions and AssetControl
NOTE: The Compaq ProLinea Family of Personal Computers does not support
the AssetControl feature.
Graphics Controllers and Memory Options
The following graphics controller and memory options are available from
Compaq for the Compaq ProLinea Family of Personal Computers:
o QVision 2000+ Graphics Controller with 2 MB VRAM
o QVision 1280/I Graphics Controller with 2 MB VRAM
o QVision 1280/P+ Graphics Controller with 1 MB VRAM (has VAFC connector)
o 1 MB DRAM graphics memory module for PCI Local Bus Integrated Graphics
Controller
o 1 MB VRAM graphics memory module for QVision 1280/P+ Graphics Controller
o 2 MB VRAM graphics memory module for QVision 2000+ Graphics Controller
Serial/Parallel Interface Board
Ther serial/parallel board option is available from Compaq for the
ProLinea Family of Personal Computers. This board uses an expansion slot
and provides additional serial and parallel device support to the computer.
Modem
The SpeedPaq 144/I internal fax/modem is available from Compaq for the
Compaq ProLinea Family of Personal Computer:
Software Options
The following software options are available from Compaq for the Compaq
ProLinea Family of Personal Computer:
o MS-DOS 6 (3.5-inch diskettes)
o Corporate license agreements for MS-DOS 6
o MS-DOS 6 LicensePaq
o MS-DOS 6 corporate upgrade (100+ users)
o MS-DOS 6 LicensePaq upgrade
o SCO UNIX O/S from Compaq version 4.1 (with media kit)
o SCO UNIX network bundle from Compaq version 4.1 (with media kit)
o SCO UNIX and TCP/IP Development System from Compaq release 1.2
o SCO XSight Runtime version 4.1
o Open Desktop Development System, release 3.0
o Windows NT
o Sytos Plus Tape software for MS-DOS
o Sytos Plus Tape software for OS/2
Chapter 1.5 Front Panel Controls and LEDs
The front panel controls and LEDs for the DT3 and DT4 are almost
identical. The controls and LEDs are identified in Figure 1-3 and
described in Table 1-5.
Table 1-5. Front Panel Controls and LEDs
===========================================================================
Item Description Function
===========================================================================
1 Power-On Light Turns on when the computer is turned on and
blinks (optional) in Energy Saver mode.
2 Hard Drive Activity Turns on when the hard drive is reading or
Light writing.
3 Num Lock Light When the Num Lock light is on, the numeric
keypad is activated.
4 Caps Lock Light When the Caps Lock light is on, all letters
typed will be capitalized.
5 Scroll Lock Light When the Scroll Lock light is on, the
screen will not scroll.
6 Diskette Drive Turns on when the diskette drive is reading
Activity Light or writing.
7 Diskette Eject Button Ejects a loaded diskette.
8 Power (On/Off) Switch Turns the computer on and off.
===========================================================================
Chapter 1.6 Rear Panel Controls and Connectors
The controls and connectors located on the rear of the DT3 and DT4 are
almost identical. They are identified in Figure 1-4 and described in
Table 1-6. See Appendix A for connector pin assignments.
Table 1-6. Rear Panel Controls and Connectors *
===========================================================================
Item Description Function
===========================================================================
1 Power Cord Connector Connects the computer to an electrical power
outlet.
2 Mouse Connector Connects the mouse.
3 Voltage Select Switch Switches voltage between 115 VAC (US) and
230 VAC to match geographical requirements.
4 Serial Port Connects to serial devices, such as a serial
printer.
5 Parallel Port Connects to parallel devices, such as a
parallel printer.
6 Keyboard Connector Connects the keyboard.
7 Monitor Connector Connects the monitor.
--------------------------------------------------------------------------* Actual connectors will vary with models.
===========================================================================
Chapter 1.7 System Design
This section presents a design overview and functional descriptions of the
key components of the Compaq ProLinea Family of Personal Computers. All
replaceable components are identified in Chapter 3 and removal/replacement
instructions are presented in Chapter 5.
Design Overview
The Compaq ProLinea Family of Personal Computers has a conventional design
that uses a pan-type chassis to house the system board, expansion cards,
power supply, and mass storage devices. The chassis is divided into two
sections by a permanent panel that extends from the front to the rear of
the chassis. This panel provides a mounting surface for the backplane
board and separates the system board section from the section that houses
the power supply and mass storage devices.
All internal components are immediately accessible when the unit cover,
held in place by three thumb screws, is removed. The front bezel is
mounted to the unit cover. Torx T-15 screws are used throughout the system
except for the CD-ROM drive bracket which requires Torx T-10 screws.
The system board is easily removed by sliding it out from the side of the
chassis after the unit cover is removed. The system board bracket,
attached to the system board with three Torx screws, forms the right side
of the chassis when the system board is installed. The system board shares
the common backplane board with the expansion cards. No mounting screws
are used with the system board.
Expansion boards are installed horizontally above the system board,
engaging the backplane board which is attached to the central panel. A
single screw attaches the expansion board to the rear panel of the
chassis.
The power supply is mounted in the right rear corner of the chassis.
Integrated clips on the bottom of the power supply engage cutouts in the
floor of the chassis. The power supply is held in place by four Torx
screws that are installed through the rear panel of the chassis.
The mass storage drive cage is located on the right side of the chassis,
directly in front of the power supply. The drive cage can be tilted up
from the rear to provide access to cable connections. The drive cage can
accommodate one internal hard drive attached to the side of the cage and
provides two or three (model dependent) drive bays for accessible mass
storage devices.
Detailed descriptions of the system components are presented in the
sections that follow.
System Board
The Compaq ProLinea Family of Personal Computers uses four basic system
board configurations. All of the boards use SIMMs for expanded memory;
four SIMM sockets on 486 models and six SIMM sockets on 586 models. The
486 models have 8 MB RAM soldered down on the system board; one of the 486
models has 4 MB RAM soldered down. The 586 models have either 8 MB or
16 MB SIMMs for RAM. The configurations are described in the following
sections.
486-Based Board With 4 MB RAM
The 486-based system board with 4 MB RAM has the following characteristics:
o Used on 3-slot/3-bay and 4-slot/4-bay computers
o 4 MB SIMMs
o 4 SIMM sockets for memory expansion
o PCI Local Bus integrated graphics controller
o Accommodates 486DX2/50, 486DX2/66, and 486DX4/100 processors (238-pin
ZIF socket)
o 128 KB cache memory standard on 486DX4/100 models only; 128 KB and
256 KB options for 486DX2 models
o Measures 8.5 x 11.5 inches (21.6 x 29.2 cm)
486-Based Board With 8 MB RAM
The 486-based system board with 8 MB RAM has the following
characteristics:
o Used on 3-slot/3-bay and 4-slot/4-bay computers
o Integrated 8 MB RAM on the system board
o 4 SIMM sockets for memory expansion
o PCI Local Bus integrated graphics controller
o Accommodates 486DX2/50, 486DX2/66, and 486DX4/100 processors (238-pin
ZIF socket)
o 128 KB cache memory standard on 486DX4/100 models only; 128 KB and
256 KB options for 486DX2 models
o Measures 8.5 x 11.5 inches (21.6 x 29.2 cm)
586-Based Board With DRAM Graphics
The 586-based system board with integrated DRAM graphics has the following
characteristics:
o Used on 3-slot/3-bay and 4-slot/4-bay computers
o PCI Local Bus integrated graphics controller
o Six SIMM sockets for memory expansion
o Accommodates 586/75 and 586/90 processors (320-pin ZIF socket)
o 256 KB cache memory
o Measures 8.5 x 13.75 inches (21.6 x 34.9 cm)
586-Based Board Without Integrated Graphics
The 586-based system board without integrated graphics has the following
characteristics:
o Used on 3-slot/3-bay and 4-slot/4-bay computers
o Designed for use with QVision 2000+ Graphics Controller in a PCI slot
o Six SIMM sockets for memory expansion
o Accommodates 586/75 and 586/90 processors (320-pin ZIF socket)
o 256 KB cache memory
o Measures 8.5 x 13.75 inches (21.6 x 34.9 cm)
IDE Interface
The IDE interface consists of two IDE connectors that support up to four
IDE devices. Each connector can be individually disabled so that option
card IDE interfaces will work.
Diskette Drive Interface
The diskette drive interface is 8477 compatible.
Serial Port
The serial port is RS-232C compatible.
Parallel Port
The following parallel support modes are supported:
o SPP (Bi-directional Standard Parallel Port)
o EPP (Enhanced Parallel Port)
o ECP (Extended Capabilities Port)
Keyboard/Mouse
All system boards will accommodate a standard 8042 keyboard/mouse
controller.
Processor
The 486-based system boards support a variety of 486 processors at bus
frequencies of 25-MHz and 33-MHz. These boards have a reconfigurable ZIF
socket to accommodate the variety of processor pinouts and supports 3.3V
and 5V processors. These system boards can be upgraded to a 486DX4/100
processor.
The 586-based system boards support the 586 processor running at bus
frequencies of 50-MHz and 60-MHz.
Memory
All of the computers use 70ns enhanced page-mode DRAMs. Memory parity is
not supported.
The 486-based system boards accommodate a total of four double-sided
SIMMs. Either a single-sided 4 MB SIMM or 8 MB of soldered down DRAMs is
installed for base memory.
The 586-based system boards accommodate a total of six double-sided SIMMs.
Either two single-sided 4 MB SIMMs or two double-side 8 MB SIMMs are
installed for base memory.
Memory Expansion
The SIMM sockets on the 486-based system board can be populated with 4,
8, 16, or 32 MB SIMMs in any order. The SIMM sockets on the 586-based
system boards must be populated in pairs of equal size in sequential
slots. The SIMMs must be 70ns or faster.
IMPORTANT: SIMMS with tin-lead pins must be used for memory upgrades.
Cache
All of the computers support a second level write-back cache. 486DX2/XX
and 486DX4/100 models support an optional 128 KB or 256 KB cache board.
586 models support an integrated 256 KB cache.
Graphics
The Compaq ProLinea Family of Personal Computers is supported with a
2-tiered graphics strategy.
The 486-based system boards and selected 586-based system boards are
shipped with a PCI Local Bus integrated graphics controller. These system
boards are provided with 1 MB DRAM. Additional memory is provided with a
daughter card. The PCI Local Bus integrated graphics controller supports
the following maximum screen resolutions:
o 1024 x 768 x 256 colors with 1 MB DRAM
o 1280 x 1024 x 256 colors with 2 MB DRAM
Selected 586-based system boards are designed to be used with a QVision
2000+ Graphics Controller in a PCI slot. This will provide the following
maximum screen resolutions:
o 1280 x 1024 x 256 colors with 2 MB VRAM
o 1280 x 1024 x 16.7M colors with 4 MB VRAM
Chapter 2. Troubleshooting
Chapter 2.0 Introduction
This chapter describes the three levels of troubleshooting for the
computer:
o Power-On Self-Test (POST)
o Compaq diagnostics
o Troubleshooting without diagnostics
POST messages, diagnostic error codes, and memory error codes are
included. The messages and codes appear in tables that include a
description of the error, the probable cause, and the recommended action
to resolve the error condition. Adherence to the procedures and
precautions described in this chapter is essential for proper service.
Chapter 2.1 Power-On Password
The power-on password prevents use of the computer until the password is
entered. To clear the power-on password, you must remove and replace a
jumper on the system board. If you do not know the power-on password, use
the following procedure to clear the password to allow troubleshooting:
1. Complete the preparation for disassembly procedures in Section 5.3.
2. Remove the unit cover as described in Section 5.4.
3. Move the jumper on E6 (Figure 2-1) from pins 1 and 2 and to pins 2
and 3.
4. Replace the unit cover and perform the desired troubleshooting.
Chapter 2.2 Power-On Self-Test
Power-on Self-Test (POST) is a series of diagnostic tests that runs
automatically when the system is turned on. POST checks the following
assemblies to ensure that the computer system is functioning properly:
o Keyboard
o Power supply
o System board
o System memory
o Memory modules
o Controllers
o Graphics system
o Diskette drives
o Hard drives
POST also detects the type of mass storage devices installed in the
computer. If POST finds an error in the system, an error condition is
indicated by an audible and/or visual message.
Power-on Self-Test Messages
An error message results if a problem is encountered during the Power-On
Self-Test utility. Table 2-1 lists the messages for POST, the audible
(beep) message, probable cause, and recommended action. The procedures
referenced under "Recommended Action" are described in Sections 2.3 and
2.4 of this chapter.
Table 2-1. Power-On Self-Test Messages
===========================================================================
Message Beeps Probable Cause Recommended Action
===========================================================================
101 - ROM Error 1 Long, System ROM checksum 1. Inspect the ROM
1 Short placement.
2. Verify the
correct ROM.
3. Replace the ROM.
--------------------------------------------------------------------------101 - I/0 ROM None Option ROM checksum 1. Inspect the ROM
Error placement.
2. Verify the
correct ROM.
3. Replace the ROM.
--------------------------------------------------------------------------102 - System None DMA, timers, etc. Replace the system
Board Failure board.
--------------------------------------------------------------------------162 - System 2 Short No diskette drive or Run Computer Setup.
Options Error mismatch in drive
type
--------------------------------------------------------------------------162 - System 2 Short Configuration Run Computer Setup.
Options Not incorrect
Set
--------------------------------------------------------------------------163 - Time & 2 Short Invalid time or date Run Computer Setup.
Date Not Set in configuration
memory
--------------------------------------------------------------------------164 - Memory 2 Short Configuration Run Computer Setup.
Size Error memory incorrect
--------------------------------------------------------------------------174 - ISA 1 Short Plug & Play ISA Run the
Configuration/ board not found Configuration and
Slot Mismatch Diagnostics
Utilities.
--------------------------------------------------------------------------175 - ISA 1 Short Plug & Play ISA Run the
Configuration/ board added, Configuration
Slot Mismatch configuration not and Diagnostics
updated Utilities.
--------------------------------------------------------------------------178 - Processor None Processor type or Run Computer Setup.
Configuration step do not match
Invalid configuration
memory
--------------------------------------------------------------------------201 - Memory None RAM failure 1. Run Computer
Error Setup.
2. Replace the
memory module(s)
(if any).
3. Replace system
board.
--------------------------------------------------------------------------203 - Memory None RAM failure 1. Run Computer
Address Error Setup.
2. Replace the
memory module(s)
(if any).
3. Replace system
board.
--------------------------------------------------------------------------Message Beeps Probable Cause Recommended Action
---------------------------------------------------------------------------
205 - Memory Error None Cache memory error Run the
Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------206 - Secondary None Cache memory Run the
cache controller controller or RAM Configuration
Failure failure and Diagnostics
Utilities.
--------------------------------------------------------------------------301 - Keyboard None Keyboard Failure Reconnect keyboard
Error with computer
turned off.
--------------------------------------------------------------------------301 - Keyboard None Keyboard Failure Replace the
Error or Text keyboard.
Fixture Installed
--------------------------------------------------------------------------303 - Keyboard None I/O board keyboard Replace the system
Controller Error controller board.
--------------------------------------------------------------------------304 - Keyboard or None Keyboard 1. Replace the
System Unit Error keyboard.
2. Replace the
system board.
--------------------------------------------------------------------------40X - Parallel 2 Short Both external and Run Computer Setup.
Port X Address internal ports are
Assignment assigned to parallel
Conflict port X
--------------------------------------------------------------------------402 - Monochrome 1 Long, Monochrome display Replace the
Adapter Failure 2 Short controller monochrome display
controller.
--------------------------------------------------------------------------501 - Display 1 Long, Video display Replace the video
Adapter Failure 2 Short controller board.
--------------------------------------------------------------------------601 - Diskette None Diskette controller 1. Check and/or
Controller Error circuitry replace cables.
2. Replace the
system board.
--------------------------------------------------------------------------602 - Diskette None Diskette in drive A Replace the
Boot not bootable diskette.
--------------------------------------------------------------------------605 - Diskette 2 Short Mismatch in drive Run Computer Setup.
Drive Error type
--------------------------------------------------------------------------611 - Primary 2 Short Configuration error Run Computer Setup.
Floppy Port
Address Assignment
Conflict
--------------------------------------------------------------------------612 - Secondary 2 Short Configuration error Run Computer Setup.
Floppy Port
Address Assignment
Conflict
--------------------------------------------------------------------------702 - A None Configuration error Run Computer Setup.
Coprocessor Has
Been Detected That
Is Not Reported In
CMOS
--------------------------------------------------------------------------703 - CMOS Reports 2 Short Configuration error Run Computer Setup.
a Coprocessor That
Has Not Been
Detected By POST
--------------------------------------------------------------------------Message Beeps Probable Cause Recommended Action
---------------------------------------------------------------------------
1151 - COM Port 1 2 Short Both external and Run Computer Setup.
Address Assignment internal serial ports
Conflict are assigned to COM1
--------------------------------------------------------------------------1152 - COM Port 2 2 Short Both external and Run Computer Setup.
Address Assignment internal serial ports
Conflict are assigned to COM2
--------------------------------------------------------------------------1153 - COM Port 3 2 Short Both external and Run Computer Setup.
Address Assignment internal serial ports
Conflict are assigned to COM3
--------------------------------------------------------------------------1154 - COM Port 4 2 Short Both external and Run Computer Setup.
Address Assignment internal serial ports
Conflict are assigned to COM4
--------------------------------------------------------------------------1771 - Primary 2 Short Internal and external Run Computer Setup.
Disk Port Address hard drive
Assignment controllers are both
Conflict assigned to
primary address
--------------------------------------------------------------------------1772 - Secondary 2 Short Internal and external Run Computer Setup.
Disk Port Address hard drive
Assignment controllers are both
Conflict assigned to the
secondary address
--------------------------------------------------------------------------1780 - Disk 0 None Hard drive/format Run the
Failure error Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------1781 - Disk 1 None Hard drive/format Run the
Failure error Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------1782 - Disk None Hard drive circuitry Run the
Controller error Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------1790 - Disk 0 None Hard drive error or Run the
Failure wrong drive type Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------1791 - Disk 1 None Hard drive error or Run the
Failure wrong drive type Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------XX000Y ZZ Parity None Parity RAM failure Run the
Check 2 Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------Hard Drive 3 Long Configuration or Run the
Parameter Table or hardware failure Configuration and
BIOS Error system Diagnostics
Halted Utilities.
--------------------------------------------------------------------------IOCHECK Active None Defective board in Run the
Slot X slot X Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------Bus Master Timeout None Defective board in Run the
Slot X slot X Configuration and
Diagnostics
Utilities.
--------------------------------------------------------------------------Audible 1 Short Power-on successful None.
--------------------------------------------------------------------------Audible 2 Short Power-on successful None.
--------------------------------------------------------------------------(RESUME = F1 KEY) None As indicated Press the F1 key.
to continue
===========================================================================
Chapter 2.3 Compaq Diagnostics
This section explains how to use the Configuration and Diagnostics
utilities installed on the computer.
IMPORTANT: If you are planning to run an alternate operating system (e.g.,
OS/2 or UNIX), you will need to configure your system using the
Compaq Diagnostics diskette. Failure to do so can result in
loss of data and reduced hard drive capacity.
Both Windows and DOS have configuration and diagnostic utilities that
should be accessed in the following instances:
o When a system configuration error is detected during the Power-On
Self-Test (POST).
o To change factory default settings for some of the computer features.
o To change the system configuration, which is sometimes necessary when
you add or remove optional hardware.
o To set system configuration features.
The same utilities are available by selecting options on a menu called
"Configuration and Diagnostics." To display this menu, restart the
computer, then press the F10 key when the square cursor displays in the
upper-right corner of the screen. Full instructions are presented later in
this section. Diagnostics are available by selecting the Computer Checkup
(TEST) utility on the Configuration and Diagnostics menu.
Compaq Diagnostics are installed on the hard drive of the Compaq ProLinea
Personal Computer. The diagnostics are also available on diskettes.
IMPORTANT: The diagnostics and setup utilities are located on a hard disk
partition in the computer, not on ROM. Details for recreating
the diagnostics/setup partition are presented in Section 2.4 of
this chapter.
You can access the diagnostics at startup from the hard drive or from the
diskettes. Procedures for both methods are presented below. Both
procedures will result in the Configuration and Diagnostics menu being
displayed. Your particular menu may differ slightly from the one shown in
Figure 2-2.
Accessing the Configuration and Diagnostics Menu at Startup
To display the menu immediately after startup, complete the following
steps:
1. Turn on or restart the computer (Ctrl+Alt+Delete).
2. Press the F10 key as soon as the cursor moves to the upper-right corner
of the screen. This occurs immediately: The Power-On Self-Test (POST)
runs, you hear two beeps, then the cursor moves to the upper-right
corner.
3. If prompted, select the desired language.
4. A menu similar to the one shown in Figure 2-2 will be displayed. You
will be prompted through any procedure that you select.
Accessing the Configuration and Diagnostics Menu from Diskette
You can load either the Setup or Diagnostics diskette with this procedure.
To load either of the diskettes, complete the following steps:
1. Insert the diskette into drive A.
2. Turn on or restart the computer (Ctrl+Alt+Delete).
3. If prompted, select the desired language.
4. If you load the Diagnostics diskette, a menu similar to the one shown
in Figure 2-2 will be displayed. If you select Computer Setup from this
menu, you will be prompted to insert the Setup diskette. You will be
prompted through any procedure that you select.
Compaq Diagnostics for Windows
Compaq Diagnostics for Windows utility contains the same functionality as
the DOS-based INSPECT program but in a Windows environment. To use the
Compaq Diagnostics for Windows utility, select the Compaq Diagnostics icon
from the Compaq Utilities group box. 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:
o Product name
o CPU information
o Cache size and type
o Mouse driver versions
o COM ports, LPT ports, modems
o ISA and PCI slot information
o Version of certain software (MS-DOS, Windows)
o ROM version
o Storage information
o Power Management settings
o Multimedia devices information
The MS-DOS version of INSPECT is available on the system partition and is
accessible as explained earlier in this section.
Chapter 2.4 Configuration and Diagnostics Menu Options
The Configuration and Diagnostics menu contains the following
troubleshooting utilities:
o Computer Setup
o Computer Checkup (TEST)
o View System Information (INSPECT)
o Test another computer
o Prepare computer for Compaq Service Call (RemotePaq)
o Create a Diagnostics Diskette
See the user documentation for descriptions of the Security Management and
Power Management utilities. A brief description of each of the
troubleshooting utilities is presented below. Ample prompting is provided
with each of these utilities.
Computer Setup
The Computer Setup utility is preinstalled on the hard drive and on
diskette. It 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. Among the parameters
checked are the following:
o Date and time
o Installed devices
o Memory status
o Password status
o Interface configurations
o Graphics configuration
o Computer serial number
o Controller status
The following activities can be performed from this screen:
o Press the Esc key to exit the screen and return to the startup
procedure.
o Press the F1 key for instructions on how to navigate around the screen.
Computer Checkup (TEST)
Computer Checkup (TEST) is a utility that confirms if the various computer
devices are recognized by the system and functioning properly. Use the
TEST utility to help set up and test the computer and to install the
operating system. The TEST menu offers the following:
o Quick Check Diagnostics runs a quick, general test on each device with a
minimal number of prompts. If errors occur, they are displayed when the
test is complete.
o Automatic Diagnostics runs unattended and provides 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.
o Prompted Diagnostics 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.
The TEST option checks the following:
o CPU (main system)
o Keyboard
o Pointing device interface
o Parallel interfaces
o Graphics controllers
o Diskette drives
o Fixed disks
o Serial interfaces
o Installed Compaq devices (tape drive, SCSI device, or network status)
View System Information (INSPECT)
This utility allows you to inspect the status and configuration of the
following parameters:
o System
o System ROM
o Keyboard
o System ports
o System storage
o Graphics
o Memory
o Operating system
o System files
o Windows files
o Network status
o Miscellaneous
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