Compaq prosignia schematic

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.

COMPAQ, ARMADA, LTE, and PROSIGNIA are registered in the U.S. Patent and Trademark Office.

Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.

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

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

Maintenance and Service Guide

Prosignia Notebook Family of Personal Computers

First Edition October, 1998 Documentation Part Number 382712-001 Spare Part Number 382793-001

Compaq Computer Corporation

preface

USING THIS GUIDE

Symbols................................................................................................................................................vii

Technician Notes................................................................................................................................ viii

Serial Number .................................................................................................................................... viii

Laser Safety ................................................................................................................................... viii

CDRH Regulations ........................................................................................................................ viii

Battery Notice ...................................................................................................................................ix

Serial Number ....................................................................................................................................x

Locating Additional Information ...........................................................................................................x

chapter 1

PRODUCT DESCRIPTION

1.1 Computer Features and Models .................................................................................................. 1-1

1.1.1 Features ................................................................................................................................. 1-2

1.1.2 Models................................................................................................................................... 1-2

1.1.3 Software Fulfillment ............................................................................................................. 1-3

1.2 Computer Options ....................................................................................................................... 1-3

1.2.1 Convenience Base II ............................................................................................................. 1-3

1.2.2 System Memory Options ...................................................................................................... 1-3

1.2.3 External Battery Charger ...................................................................................................... 1-4

1.2.4 External Keyboards and Pointing Devices ........................................................................... 1-4

1.2.5 External Monitors ................................................................................................................. 1-4

1.3 External Computer Components................................................................................................. 1-4

1.3.1 Left Side Components........................................................................................................... 1-5

1.3.2 Front Components................................................................................................................. 1-6

1.3.3 Top Components................................................................................................................... 1-7

1.3.4 Right Side Components ........................................................................................................ 1-8

1.3.5 Rear Components.................................................................................................................. 1-9

1.3.6 Bottom Components ........................................................................................................... 1-10

1.3.7 Status Panel Lights.............................................................................................................. 1-11

1.4 Design Overview....................................................................................................................... 1-12

1.4.1 System Unit......................................................................................................................... 1-12

1.4.2 Internal Boards.................................................................................................................... 1-12

1.4.3 Video system....................................................................................................................... 1-13

Contents iii

chapter 2

TROUBLESHOOTING

2.1 Preliminary Steps.........................................................................................................................2-2

2.2 Clearing Passwords......................................................................................................................2-3

2.3 Power-On Self-Test (POST) ........................................................................................................2-3

2.4 POST Error Messages..................................................................................................................2-4

2.5 Compaq Utilities ..........................................................................................................................2-7

2.5.1 Computer Setup .....................................................................................................................2-7

2.5.2 Computer Checkup (TEST) ...................................................................................................2-9

2.5.3 Running View System Information (INSPECT) .................................................................2-14

2.5.4 Running Compaq Diagnostics .............................................................................................2-15

2.5.5 Boot Sequencing ..................................................................................................................2-15

2.5.6 Factory Default Settings ......................................................................................................2-16

2.6 Troubleshooting Without Diagnostics .......................................................................................2-17

2.6.1 Before Replacing Parts ........................................................................................................2-17

2.6.2 Checklist for Solving Problems...........................................................................................2-17

chapter 3

ILLUSTRATED PARTS CATALOG

3.1 System Unit..................................................................................................................................3-2

3.2 Mass Storage Devices ..................................................................................................................3-4

3.3 Cables and Power Cords ..............................................................................................................3-6

3.4 Standard and Optional Boards .....................................................................................................3-7

3.5 Options.........................................................................................................................................3-9

3.6 Miscellaneous Parts ...................................................................................................................3-10

3.7 Documentation...........................................................................................................................3-11

iv Contents

chapter 4

REMOVAL AND REPLACEMENT PRELIMINARIES

4.1 Tools Required.............................................................................................................................4-1

4.2 Service Considerations.................................................................................................................4-1

4.2.1 Plastic Parts............................................................................................................................4-1

4.2.2 Cables and Connectors...........................................................................................................4-2

4.3 Preventing Damage to Removable Drives...................................................................................4-2

4.4 Preventing Electrostatic Damage.................................................................................................4-3

4.4.1 Packaging and Transporting Precautions...............................................................................4-3

4.4.2 Workstation Precautions........................................................................................................4-4

4.4.3 Grounding Equipment and Methods......................................................................................4-4

4.4.4 Electrostatic Voltage Levels and Protective Materials..........................................................4-5

chapter 5

REMOVAL AND REPLACEMENT PROCEDURES

5.1 Serial Number .............................................................................................................................. 5-1

5.2 Disassembly Sequence................................................................................................................. 5-2

5.3 Preparing the Computer for Disassembly .................................................................................... 5-3

5.3.1 Disconnecting the AC Power................................................................................................5-3

5.3.2 Battery Pack Removal........................................................................................................... 5-4

5.3.3 MultiBay Devices ................................................................................................................. 5-5

5.3.4 PCMCIA ............................................................................................................................... 5-6

5.4 Computer Tilt Feet ....................................................................................................................... 5-7

5.5 Internal Modem............................................................................................................................ 5-8

5.5.1 IR (Infrared) Module .......................................................................................................... 5-10

5.6 Hard Drive.................................................................................................................................. 5-11

5.7 Keyboard .................................................................................................................................... 5-14

5.7.1 Keyboard Removal ............................................................................................................. 5-16

5.7.2 Memory Board .................................................................................................................... 5-17

5.7.3 Lithium Real Time Clock Battery ...................................................................................... 5-20

5.7.4 Optical Disc Bay ................................................................................................................. 5-22

5.8 Display Assembly ...................................................................................................................... 5-23

5.8.1 Hinge Covers ...................................................................................................................... 5-23

5.8.2 Display Assembly ............................................................................................................... 5-25

5.9 Top Cover Assembly.................................................................................................................. 5-27

5.9.1 DC-DC Converter and Audio Board Shield ....................................................................... 5-31

5.9.2 DC-DC Converter ............................................................................................................... 5-32

5.9.3 Audio Board........................................................................................................................ 5-33

5.9.4 Fan....................................................................................................................................... 5-34

5.9.5 System Board ...................................................................................................................... 5-35

5.9.6 Integrated AC Adapter........................................................................................................ 5-38

chapter 6

SPECIFICATIONS

6.1 Computer...................................................................................................................................... 6-2

6.2 Display ......................................................................................................................................... 6-3

6.3 Hard Drive.................................................................................................................................... 6-4

6.4 Diskette Drive .............................................................................................................................. 6-5

6.5 LS-120 Drive................................................................................................................................ 6-6

6.6 ZIP Drive...................................................................................................................................... 6-7

6.7 CD-ROM Drive............................................................................................................................ 6-8

6.8 DVD-ROM Drive......................................................................................................................... 6-9

6.9 Battery Packs.............................................................................................................................. 6-10

6.10 Convenience Base II ................................................................................................................ 6-11

6.11 External Power Supplies .......................................................................................................... 6-12

6.12 System Interrupts ..................................................................................................................... 6-14

6.13 System DMA............................................................................................................................ 6-14

6.14 System I/O Address ................................................................................................................. 6-15

6.15 System Memory Map............................................................................................................... 6-17

Contents v

Appendix A

CONNECTORS.........................................................................................................................................A-1

Appendix B

POWER CORD SET REQUIREMENTS

B.1 3-Conductor Power Cord Set ......................................................................................................B-1

B.1.1 General Requirements..........................................................................................................B-1

B.1.2 Country-Specific Requirements........................................................................................... B-2

B.1.3 Notes: ...................................................................................................................................B-2

Appendix C

CONVENIENCE BASE

C.1 Models and Features....................................................................................................................C-1

C.2 Convenience Base Features......................................................................................................... C-3

C.3 Convenience Base II Components ..............................................................................................C-4

C.3.1 Front and Right Side Components .......................................................................................C-4

C.3.2 Rear Components ................................................................................................................. C-5

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

vi Contents

reface

USING THIS GUIDE

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Prosignia Notebook Family of Personal Computers.

Compaq Computer Corporation reserves the right to make changes to this product without notice.

Additional information is available on the Compaq Prosignia Notebook Family of Personal Computers Illustrated Parts Map.

Symbols

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

WARNING:

the warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions in

the caution could result in damage to equipment or loss of information.

IMPORTANT: NOTE:

Text set off in this manner presents clarifying information or specific instructions.

Text set off in this manner presents commentary, sidelights, or interesting points of information.

Text set off in this manner indicates that failure to follow directions in

Using This Guide vii

Technician Notes

WARNING:

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.

WARNING:

proper operation, plug the AC power cord into a properly grounded electrical outlet only.

CAUTION:

(7.62 cm) of clearance on the left and right sides of the computer.

Only authorized technicians trained by Compaq should attempt to

The computer is designed to be electrically grounded. To ensure

To properly ventilate your system, you must provide at least 3 inches

Serial Number

When requesting information or ordering spare parts, provide the computer serial number. The serial number is on the back of the computer.

Laser Safety

All Compaq systems equipped with CD-ROM drives comply with appropriate safety standards, including IEC 825. With specific regard to the laser, the equipment complies with laser product performance standards set by government agencies as a Class 1 laser product. It does not emit hazardous light; the beam is totally enclosed during all modes of customer operation and maintenance.

CDRH Regulations

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products on August 2, 1976. These regulations apply to laser products manufactured from August 1, 1976. Compliance is mandatory for products marketed in the United States.

viii Using This Guide

WARNING: Use of controls or adjustments or performance of procedures other

than those specified herein or in the CD ROM installation guide may result in hazardous radiation exposure.

This system is classified as a CLASS 1 LASER PRODUCT. This label is located on the outside of the system being serviced. A similar label also appears on the internal CDROM installed in the system.

LASER INFO Laser Type: Semiconductor GaAIAs

Wave Length: 780 +/- 35 nm Divergence Angle: 53.5 Degree +/- 1.5 Degree Output Power: Less than 0.2mW or 10,869 W Polarization: Circular Numerical Aperture: 0.45 +/- 0.04

Only an authorized technician, service provider, dealer, or reseller 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 as well as void the warranty.

•m

-2sr-1

Battery Notice

In North America, dispose of nickel metal hydride or lithium-ion batteries by taking advantage of the Compaq battery recycling program. You will be provided with a postage-paid battery pack mailer preaddressed to a reclamation facility where the metals are recycled.

WARNING: This computer contains an internal lithium battery-powered real-time

clock circuit. There is a risk of explosion and injury if the battery is incorrectly replaced or improperly handled. Do not attempt to recharge, disassemble, immerse in water, or dispose of the battery in fire. Replacement should be done using the Compaq spare part for this computer.

WARNING: The computer also contains a lithium-ion battery pack. There is a risk

of fire and chemical burn if the battery pack is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose of in fire or water, or expose this battery to temperatures higher than 60 degrees C.

In Europe, do not dispose of batteries and accumulators with general household waste. Dispose of or recycle them by using the public collection system or returning them to Compaq.

Using This Guide ix

Serial Number

The serial number is located on the back of the computer directly below the parallel connector.

Locating Additional Information

The following documentation is available to support the computer:

■ Compaq Prosignia Notebook Family of Personal Computers documentation set

■ Microsoft operating system guide

■ Compaq service advisories and bulletins

■ Compaq QuickFind

■ Compaq Service Quick Reference Guide

■ Technical Reference Guide

■ Illustrated Parts Map

■ Compaq Internet site at http://www.Compaq.com

x Using This Guide

chapte

PRODUCT DESCRIPTION

1.1 Computer Features and Models

The Prosignia Notebook Family of Personal Computers is a line of multimedia notebook computers with advanced modularity, processors, and video graphics. This full-function, Mobile Pentium II-based family of notebook computers allows full desktop functionality and connectivity through the use of an optional Convenience Base.

Figure 1-1. Prosignia Notebook Personal Computer

Product Description 1-1

1.1.1 Features

The computer models have the following standard features:

■ 233-MHz, 266-MHz, or 300-MHz Mobile Pentium II processors

■ 32-MB or 64-MB of synchronous dynamic random access memory (SDRAM),

expandable to 160 MB (depending on the model)

■ 3.2-, 4.0-, or 6.0-GB, 2.5-inch internal hard drive mounted in carrier

■ LCD displays: ❏ 12.1 inch SVGA CTFT display ❏ 13.3-inch XGA CTFT display ❏ 14.1-inch XGA CTFT display

■ Supports Lithium Ion (Li-ion) battery packs

■ Internal stereo speakers

■ Internal microphone

■ 1.44-MB diskette drive, DVD, LS-120, Iomega Zip or second battery or Hard Disk

Drive in the Multi-bay adapter

■ DVD drive or 24X CD-ROM in the Optical Disk Bay

■ Full-size 101 key compatible keyboard including 12 function keys, 8 cursor control

keys, inverted-T cursor control keys, and embedded numeric keypad

■ Four user-programmable keys

■ Touchpad pointing device

■ Operates from a battery pack in the battery bay, plus an optional battery pack in the

MultiBay, or integrated AC power supply that is compatible with domestic or international power sources

■ Power management and security features

■ Infrared interface for wireless communication with other IrDA-compliant devices at

data rates up to 4 mb/sec

■ Two standard device slots that will accommodate two Type II or one Type III PC

Card, PCMCIA card or CardBus card. Zoomed-Video is supported in the bottom slot.

■ 176-pin expansion connector provides the interface to the convenience base options

■ Rear-panel ports provide connections for parallel, serial, external monitor, and

keyboard/mouse

■ Universal Serial Bus (USB)

(available on selected models)

1.1.2 Models

Compaq Prosignia Notebook computers are configurable, and may contain any or all of the features listed. All models have 32-MB or 64-MB of standard memory with one 32-MB memory module in the memory expansion port, and may be upgraded to 160MB.

Windows 95 supports up to 115-kb/sec. Driver for 4 mb/sec available from www.microsoft.com.

1-2 Product Description

1.1.3 Software Fulfillment

Replacement software may be ordered directly from Compaq Computer Corporation. Both the model and the serial number of the computer are needed to identify the specific software available.

1.2 Computer Options

The computer supports the following options:

■ Convenience Base II pass through model with monitor stand

■ Convenience Base II with Ethernet with monitor stand

■ Compatible with Convenience Base models from the Armada 1500 Family of

Personal Computers

■ Memory expansion boards

■ Li-ion battery pack

■ Automobile/Aircraft Adapter

■ External Battery Charger

■ PCMCIA modem

■ Hard drive upgrade

■ Hard drive adapter for MultiBay with carrying case

■ Internal modem

■ CD-ROM drive for Optical Disc Bay

■ DVD-ROM for Optical Disc Bay

■ 120-MB LS-120 diskette drive for MultiBay

■ 100-MB Zip drive for MultiBay

1.2.1 Convenience Base II

Prosignia Notebook models support the following convenience base models:

■ Convenience Base II pass through

■ Convenience Base II with Ethernet

1.2.2 System Memory Options

The computer supports optional 32-, 64-, and 128-MB memory boards. The memory boards are 66-MHz SDRAM without parity. System memory can be expanded to 160-MB, depending on the model.

Product Description 1-3

1.2.3 External Battery Charger

The external battery charger has the following features:

■ Two battery charge slots

■ Accepts Li-ion modular batteries

■ Charges 1 battery in 1.5 hours

■ Charges 2 batteries in 3 hours

Note: The battery calibration process should be used to discharge the batteries.

1.2.4 External Keyboards and Pointing Devices

Supports Compaq or Compaq compatible PS2 keyboards and pointing devices.

1.2.5 External Monitors

■ Supports all VGA Monitors at resolutions up to 1280 × 1024

■ Supports DDC1 and DDC2b compliant Energy Star monitors

1.3 External Computer Components

The external computer components are illustrated and described in this section.

1-4 Product Description

1.3.1 Left Side Components

The left side external components are shown in Figure 1-2 and are described in Table 1-

Figure 1-2. Left Side Components

Table 1-1

Computer Components

Left Side

Item Component Function

1 Cable Lock Secures computer to fixed object 2 Speaker/headphone jack Connects stereo speakers, headphone or headset 3 Microphone jack Connects external microphone, disables internal microphone 4 Volume up Increases volume 5 Volume down Decreases volume 6 Left bass reflex speaker port Enhances audio quality

Product Description 1-5

1.3.2 Front Components

The front external components are shown in Figure 1-3 and are described in Table 1-2.

Figure 1-3. Front Components

Table 1-2

Computer Components

Front

Item Component Function

1 Display LCD graphic display 2 Lid switch Blanks display when display is closed 3 Speakers Produce high quality stereo sound 4 MultiBay Accepts diskette drive, LS-120 drive, ZIP drive, second battery

5 Optical disc bay Accepts CD-ROM or DVD-ROM drives 6 Battery bay Accepts Li-Ion battery pack 7 Keyboard Accepts operator input 8 Microphone Monophonic microphone

pack or second hard drive

1-6 Product Description

1.3.3 Top Components

The top external components are shown in Figure 1-4 and are described in Table 1-3.

Figure 1-4. Top Components

Table 1-3

Computer Components

Top

Item Component Function

1 Lid switch Blanks display when display is closed 2 Programmable function buttons User programmable keys 3 Suspend button Initiates suspend 4 Power switch Turns power on and off 5 Keyboard release latches Releases keyboard from system unit 6 Touchpad Pointing device

Product Description 1-7

1.3.4 Right Side Components

The right side external components are shown in Figure 1-5 and are described in Table 1-4.

Figure 1-5. Right Side Components

Table 1-4

Computer Components

Right Side

Item Component Function

1 Right bass reflex speaker port Enhances audio quality 2 PC Card eject button Eject PC Cards from the slots 3 PC Card slots Accepts 16- and 32-bit PC Cards 4 USB Connector Connects USB devices to the computer 5 Modem jack Connects the phone line to the computer (selected models)

1-8 Product Description

1.3.5 Rear Components

The rear components are shown Figure 1-6 and are described in Table 1-5.

Figure 1-6. Rear Components

Table 1-5

Computer Components

Rear

Item Component Function

1 Parallel connector Connects parallel devices such as a printer 2 Serial connector Connects serial devices such as a mouse 3 Infrared port Provides wireless communications (on selected models) 4 External monitor connector Connects external monitor 5 AC Power connector Connects external AC power 6 Docking connector Provides connection to optional convenience base 7 Fan (Airflow vents) Provides thermal ventilation to internal components 8 External keyboard connector Connects external keyboard or PS-2 mouse

(Supports standard Y connector)

Product Description 1-9

1.3.6 Bottom Components

The bottom external components are shown in Figure 1-7 and are described in Table 1-6.

Figure 1-7. Bottom Components

Table 1-6

Computer Components

Bottom

Item Component Function

1 Modem compartment Integrated modem (selected models) 2 Docking latch receptacles Locks computer to optional convenience base 3 Docking alignment guide Aligns computer to optional convenience base 4 Tilt feet Adjusts computer to an angle 5 MultiBay screw Secures MultiBay Devices 6 Hard drive cover Covers hard drive compartment

* Hard drive security screw Secures hard drive cover (not shown)

1-10 Product Description

1.3.7 Status Panel Lights

The status panel lights are shown in Figure 1-8 and described in Table 1-7.

Figure 1-8. Status Panel Lights

Table 1-7

Computer Components

Status Panel

Item Component Function

1 Hard drive activity light Indicates hard drive or CD-ROM access 2 MultiBay activity light Indicates Multi-Bay device activity 3 Number lock indicator Indicates that numbers lock is on 4 Caps lock indicator Indicates that caps lock is on 5 Scroll lock indicator Indicates that scroll lock is on

Product Description 1-11

1.4 Design Overview

This section presents a design overview of the computer. The overview is limited to field replaceable parts. All replacement parts are listed in Chapter 3.

1.4.1 System Unit

The computer is a traditional clamshell design with a display assembly attached to a system unit. The computer opens to reveal a backlit LCD display and a full-function keyboard. The display is designed for a continuously adjustable tilt angle.

1.4.2 Internal Boards

The system electronics are integrated on four printed circuit assemblies: the audio/led board, system board, modem board, and the DC-DC converter board.

■ The audio/led board provides support for the audio functions.

■ The system board integrates the processor, on-board memory, level 2 cache, local

bus video adapter, and PCMCIA/CardBus adapter.

■ The optional modem board supports data or fax functions.

■ The DC-DC converter board creates the system voltages (3.3 VDC and 5 VDC)

from the battery or AC/DC input.

Processor

An Intel Mobile Pentium II processor is located on the system board for the 233 MHz, 266 MHz, or 300 MHz models.

Memory

Base memory is 32-MB with 32-, 64-, or 128-MB of optional expansion memory. Base memory is onboard memory built into the system board. Expansion memory consists of one memory expansion board available as a user installable option. Some models come standard with 64-MB of total memory. This consists of 32-MB of standard memory and 32-MB of additional memory in the memory expansion unit.

Cache

Level 2 cache is integrated in the CPU module. It is not user upgradable.

1-12 Product Description

PCMCIA/CardBus and Video Adapter Controller

The PCMCIA/CardBus adapter is based on the Texas Instrument PCI1220 PC to CardBus controller unit. The local bus video adapter is the Chips and Technologies 65555 controller.

■ The serial-parallel port board expands the serial and parallel signals from the system

board to the serial and parallel expansion connectors.

■ The audio/led board supports the microphone and headphone jacks, the volume

control switches, and the amplifier and equalization circuitry.

1.4.3 Video system

The standard video subsystem consists of:

■ An internal LCD Display

■ 12.1 inch SVGA CTFT display

■ 13.3 inch XGA CTFT display

■ 14.1 inch XGA CTFT display

■ 2 Megabyte frame buffer

■ An inverter to supply AC power to the LCD back-light system

■ A standard external VGA connector for use with CRTs and other VGA compatible

displays

■ 40 KByte Video ROM

Product Description 1-13

chapte

TROUBLESHOOTING

Follow these basic steps when beginning the troubleshooting process:

1. Complete the preliminary steps listed in Section 2.1.

2. Run the Power-On Self-Test (POST) as described in Section 2.3.

3. Run Computer Setup as described in Section 2.5.

4. Run the Computer Checkup (TEST) as described in Section 2.6.

5. If you are unable to run POST or Computer Checkup or if the problem persists after running POST and Computer Checkup, perform the recommended actions described in the diagnostic tables in Section 2.5.

Follow these guidelines when troubleshooting:

■ Complete the recommended actions in the order in which they are given.

■ Repeat POST and Computer Checkup after each recommended action until the

problem is resolved and the error message does not return.

■ When the problem is resolved, stop performing the troubleshooting steps and do not

complete the remaining recommended actions.

■ Refer to Chapter 5 for removal and replacement procedures that are recommended.

■ If the problem is intermittent, check the computer several times to verify that the

problem is solved.

The following table describes the troubleshooting actions:

Table 2-1

Trouble Shooting Actions

If You Want To: Then Run:

Check for POST error messages POST Check that computer components are recognized and

running properly View information about the computer and installed or

connected devices Perform any of the following:

■ Check the system configuration

■ Set the system power management parameters

■ Return the system to its original configuration

■ Check system configuration of installed devices

Computer Checkup (TEST) under Compaq Utilities

View System Information (INSPECT) under Compaq Utilities

Computer Setup

Troubleshooting 2-1

2.1 Preliminary Steps

IMPORTANT: Use AC power when running POST, Computer Setup, or Computer

Checkup. A low battery condition could initiate Hibernation and interrupt the test. Before running POST and Computer Checkup, complete the following steps:

1. Obtain established passwords. If you must clear the passwords, go to Section 2.2.

2. Ensure that the hard drive is installed in the computer.

3. Ensure that the battery pack is installed in the computer and the power cord is connected to the computer and plugged into an AC power source.

4. Turn on the computer.

5. If a power-on password has been established, type the password and press Enter.

6. Run Computer Setup (Section 2.5). If a Setup password has been established, type the password and press Enter.

7. Turn off the computer and all external devices.

8. Disconnect external devices that you do not want to test. If you want to use the printer to log error messages, leave it connected to the computer.

NOTE: If a problem only occurs when an external device is connected to the computer, the problem could be with the external device or its cable. Isolate the problem by running POST with and without the external device connected.

9. Use Compaq Utilities and Loopback plugs in the serial and parallel connectors if you plan to test these ports. Follow these steps to run Compaq Utilities:

a. If you are running Compaq Utilities from the hard drive, turn on or restart the

computer. Press F10 when the cursor appears in the upper right corner of the screen. If you do not press F10 in time, restart the computer and try again.

b. Press Enter to accept OK. c. Select Computer Checkup (TEST). d. Select Prompted Diagnostics. e. After “Identifying System Hardware” completes, select Interactive Testing and

2-2 Troubleshooting

If you are running Compaq Utilities from diskette, insert the Compaq Utilities diskette in drive A. Turn on or restart the computer.

follow the instructions on the screen.

2.2 Clearing Passwords

The power-on password prevents use of the computer until the password is entered. The setup password prevents unauthorized changes to Computer Setup. To clear the passwords, you must remove all power from the system board. If you do not know the passwords, use the following procedure to clear the password:

1. Remove all battery packs from the battery bay and MultiBay, if applicable.

2. Disconnect the AC power.

3. Remove the real-time clock battery.

4. Wait five minutes.

5. Reconnect the AC power.

6. Restart the computer. During Power-On Self Test (POST), a “162 System Options

not set” message appears.

7. Shut down the computer, then disconnect AC power again.

8. Replace the real-time clock battery.

9. Install the battery pack(s).

Proceed with the troubleshooting procedures.

2.3 Power-On Self-Test (POST)

The Power-On Self-Test (POST) is a series of tests that run every time the computer is turned on. POST verifies that the system is configured and functioning properly.

To run POST, complete the following steps:

1. Complete the preliminary steps (Section 2.1).

2. Turn on the computer. If POST does not detect any errors, the computer beeps once or twice to indicate that

POST has run successfully. The computer boots from the hard drive or from a bootable diskette if one is installed in the diskette drive.

Troubleshooting 2-3

2.4 POST Error Messages

If the system is not functioning well enough to run POST, or if the display is not functioning well enough to show POST error messages, refer to the Troubleshooting tables in Section 2.6.

If POST detects an error, one of the following events occurs:

■ A message with the prefix "WARNING" appears informing you where the error

occurred. The system pauses until you press F1 to continue.

■ A message with the prefix "FATAL" appears informing you where the error

occurred. After the message, the system emits a series of beeps and stops.

■ The system emits a series of beeps and stops.

Warning messages indicate that a potential problem, such as a system configuration error, exists. When F1 is pressed, the system should resume. You should be able to correct problems that produce WARNING messages.

IMPORTANT: When a WARNING message includes the prompt to "RUN SCU," press F10 to run Computer Setup. (Computer Setup replaces the SCU utility.)

2-4 Troubleshooting

If you receive one of the error messages listed in Table 2-2, follow the recommended action.

Table 2-2

Warning Messages

Message Description Recommended Action

CMOS checksum invalid, run SCU CMOS RAM information has been

CMOS failure, run SCU CMOS RAM has lost power. Run Computer Setup to reinitialize

Diskette controller error The diskette drive controller failed

Diskette track 0 failed The diskette drive cannot read

Hard disk controller error The hard drive controller failed to

Keyboard controller failure The keyboard failed the self-test

Keyboard failure The keyboard failed to respond to

No interrupts from Timer 0 The periodic timer interrupt is not

ROM at xxxx (LENGTH yyyy) with nonzero checksum (zz)

Time/Date corrupt - run SCU The time and date stored in the

Hard disk xx failure (or error) A failure or an error occurred when

Unsupported memory module An EDO memory module was

corrupted.

to respond to the recalibrate command.

track 0 of the diskette in the drive.

respond to the reset command.

command.

the RESET ID command.

occurring. An illegal adapter ROM was located

at the specified address.

real time clock have been corrupted, possibly by a power loss.

trying to access the hard drive.

installed in the memory expansion slot.

Run Computer Setup to reinitialize CMOS-RAM.

CMOS-RAM. If there is no diskette drive in the

system, run Computer Setup to properly configure the CMOS-RAM to show no diskette drive present. If the problem persists, or if a diskette drive is present, complete these steps until the problems is solved:

1. Check diskette drive connections.

2. Replace diskette drive.

3. Replace system board. Try another diskette. If the problem

persists, you may need to replace the diskette drive.

Check the drive parameters. Turn off the system and check all related connections.

Replace the system board.

Replace the keyboard. If the problem persists, replace the system board.

Replace the system board.

Check the external adapter (such as a video card) to determine if it is causing the conflict.

1. Run Computer Setup.

2. If problem persists, replace

auxiliary battery.

3. If problems persists, replace

system board.

1. Run Scan disk.

2. Check disk in DOS and

Windows 95. If problem persists, refer to Table 2-11.

Remove the EDO memory module and replace with SDRAM memory module.

Troubleshooting 2-5

Fatal errors emit a beep and may display a FATAL message. Fatal errors indicate severe problems, such as a hardware failure. Fatal errors do not allow the

system to resume. Some of the Fatal error beep codes are listed at the end of this section.

Table 2-3

Fatal Error Message

Message Description Beep Code

CMOS RAM test failed A walking bit test of CMOS RAM location 0E

(Hex) - 3F (Hex) failed.

DMA controller faulty A sequential read/write of the transfer count

and transfer address registers within the primary and secondary DMA controllers failed.

Faulty DMA page registers A walking bit read/write of the 16 DMA

controller page registers starting at location 80 Hex failed.

Faulty refresh circuits A continuous read/write test of port 61h found

that bit 4 (Refresh Detect) failed to toggle within an allotted amount of time.

Interrupt controller failed A sequential read/write of various Interrupt

Controller registers failed.

ROM checksum incorrect A checksum of the ROM BIOS does not match

the byte value at F000:FFFF.

RAM error at location xxxx RAM error occurred during memory test. None

Table 2-4

Fatal Error Beep Codes

Beep Code Beep Sequence Description Recommended Action

0 S-S-S-P-S-S-L-P The DMA page registers are

faulty. 1 S-S-S-P-S-L-S-P The refresh circuitry is faulty. 2 S-S-S-P-S-L-L-P The ROM checksum is incorrect. 3 S-S-S-P-L-S-S-P The CMOS RAM test failed. 4 S-S-S-P-L-S-L-P The DMA controller is faulty. 5 S-S-S-P-L-L-S-P The interrupt controller failed. 6 S-S-S-P-L-L-L-P The keyboard controller failed. 7 S-S-L-P-S-S-S-P Graphics adapter is faulty. 8 S-S-L-P-S-S-L-P Internal RAM is faulty. Replace memory board or

S = Short, L = Long, P = Pause

Replace system board.

system board if memory on system board is faulty.

2-6 Troubleshooting

2.5 Compaq Utilities

Compaq Utilities contain several functions that

■ Determine if various computer devices are recognized by the system and are

operating properly.

■ Provide information about the system once it is configured.

Compaq Utilities include the following programs:

■ Computer Setup

■ Computer Checkup (TEST)

■ View System Information (INSPECT)

To access Compaq Utilities:

1. Turn on or restart the computer by clicking Start ⇒ Shut Down ⇒ Restart the

computer.

2. Press F10 when the blinking cursor appears in the upper-right corner of the display.

3. Select a menu option.

2.5.1 Computer Setup

Computer Setup contains utilities that give you an overall picture of the computer hardware configuration and aid in troubleshooting. These utilities also allow you to set custom features such as security options, power conservation levels, and startup preferences.

If you are running Windows 95, the computer automatically recognizes and configures the system for new devices. If you have a configuration problem or want to view or reset configuration settings, you can use Computer Setup.

NOTE: If you are running Windows 95, you should use Computer Setup only to adjust

system features such as the power-on password or battery conservation level. Windows 95 may override other configuration changes.

If you are running Windows NT, the computer does not automatically recognize new devices added to the system. All devices ordered with your system have been configured for you. Use Computer Setup to view settings for a new device you have added or to reset configuration settings for preinstalled devices.

Computer Setup provides two methods of viewing the computer configuration: by type (factory setting) or connection.

Categories by type:

■ System Features—security, power, boot management

■ Communication—port, modem, and other communication devices

■ Storage—storage-related devices such as hard drive, CD-ROM drive, diskette drive

■ Input Devices—keyboard, mouse, and other input devices

■ Network—network adapter or other network-related devices

■ Audio—sound properties and audio device settings

■ Video—display timeouts and video device resources

■ Other—miscellaneous devices

Troubleshooting 2-7

Categories by connection:

■ System Features—security, power, boot management

■ System Devices—keyboard, mouse, parallel and serial ports

■ ISA—ISA bus and connected devices

■ PCI—PCI bus and connected devices

■ PC Card—PC Card devices

Running Computer Setup

1. Turn on or restart the computer by clicking Start ⇒ Shut Down ⇒ Restart the

computer.

2. Press F10 when the blinking cursor appears in the upper-right corner of the screen.

NOTE: If you a setup password is enabled, it must be used to access Computer Setup.

3. Click a language and press Enter.

4. Click Computer Setup and press Enter.

5. When you are finished, click Exit.

Exiting Computer Setup

1. Click Exit.

2. Select one of the following Exit options:

■ Save—Saves the new settings and exits Computer Setup.

NOTE: Some settings may not take effect until the computer is restarted.

■ Ignore—Exits Computer Setup and restores previous settings.

■ Cancel—Returns to Computer Setup.

2-8 Troubleshooting

+ 114 hidden pages

Compaq prosignia schematic

Prosignia Notebook Family of Personal Computers

CONTENTS

Using This Guide vii