Compaq armada e700 schematic
Compaq Armada E700
Series of Personal Computers
Maintenance and Service Guide
Notice
The information in this guide is subject to change without notice.
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TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN;
NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM
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Computer Corporation.
1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
OMPAQ and ARMADA are registered in the U. S. Patent and Trademark Office.
C
Microsoft, MS-DOS, Windows, Windows NT, and other names of Microsoft products
mentioned herein are trademarks or registered trademarks of Microsoft Corporation.
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The software described in this guide is furnished under a license agreement or
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MAINTENANCE AND SERVICE GUIDE
Compaq Armada E700 Series of Personal Computers
First Edition July 1999
Documentation Part Number 128530-001
Spare Part Number 127233-001
Compaq Computer Corporation
CONTENTS
preface
USING THIS GUIDE...........................................................................................................................................vii
chapter 1
PRODUCT DESCRIPTION
1.1 Computer Features and Models......................................................................................................1-1
Models...........................................................................................................................................1-2
Intelligent Manageability..............................................................................................................1-4
Accessing the Web Agent.............................................................................................................1-4
Asset Management........................................................................................................................1-4
Fault Management.........................................................................................................................1-5
Security Management ...................................................................................................................1-6
Configuration Management..........................................................................................................1-7
Managing Power ...........................................................................................................................1-7
1.2 Computer Components...................................................................................................................1-8
Power Equipment..........................................................................................................................1-9
Mass Storage Devices.................................................................................................................1-10
1.3 Computer External Components ..................................................................................................1-11
1.4 Design Overview ..........................................................................................................................1-18
System Board ..............................................................................................................................1-18
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.............................................................................................................................2-6
Selecting Computer Setup or Compaq Diagnostics for Windows...............................................2-7
Using Compaq Diagnostics for Windows..................................................................................2-10
Factory Default Settings..............................................................................................................2-10
2.6 Troubleshooting Without Diagnostics..........................................................................................2-12
Before Replacing Parts................................................................................................................2-12
Obtaining Update Information with Info Messenger.................................................................2-12
Checklist for Solving Problems..................................................................................................2-13
chapter 3
ILLUSTRATED PARTS CATALOG
3.1 Serial Number Location..................................................................................................................3-1
3.2 Computer System Major Components...........................................................................................3-2
3.3 Miscellaneous Plastics/Hardware Kit Components.......................................................................3-4
Contents iii
3.4 Mass Storage Devices.....................................................................................................................3-5
3.5 Miscellaneous..................................................................................................................................3-6
chapter 4
REMOVAL AND REPLACEMENT PRELIMINARIES
4.1 Tools Required................................................................................................................................4-1
4.2 Service Considerations ...................................................................................................................4-1
Plastic Parts ...................................................................................................................................4-1
Cables and Connectors..................................................................................................................4-2
4.3 Preventing Damage to Removable Drives .....................................................................................4-2
4.4 Preventing Electrostatic Damage....................................................................................................4-3
Packaging and Transporting Precautions......................................................................................4-3
Workstation Precautions...............................................................................................................4-4
Grounding Equipment and Methods.............................................................................................4-5
Electrostatic Voltage Levels and Protective Materials.................................................................4-6
chapter 5
REMOVAL AND REPLACEMENT PROCEDURES
5.1 Serial Number.................................................................................................................................5-1
5.2 Disassembly Reference Chart.........................................................................................................5-2
5.3 Preparing the Computer for Disassembly ......................................................................................5-3
Undocking the Computer from the Compaq Expansion Base....................................................5-3
Undocking the Computer from the Compaq Convenience Base................................................5-4
Disconnecting the Computer.........................................................................................................5-5
5.4 Computer Feet.................................................................................................................................5-6
5.5 Battery Packs...................................................................................................................................5-7
Removing a Battery Pack from the Battery Bay..........................................................................5-7
Removing a Battery Pack from the MultiBay..............................................................................5-9
Inserting a Battery Pack into the Battery Bay............................................................................5-12
Inserting a MultiBay Battery Pack..............................................................................................5-13
Inserting a Dual-MultiBay Battery Pack ....................................................................................5-14
5.6 Hard Drives...................................................................................................................................5-15
Removing a Hard Drive from the Hard Drive Bay....................................................................5-15
Inserting a Hard Drive into the Hard Drive Bay ........................................................................5-17
Removing a Hard Drive from the MultiBay...............................................................................5-19
Inserting a Hard Drive into the MultiBay...................................................................................5-20
5.7 MultiBay Devices .........................................................................................................................5-22
Removing MultiBay Devices......................................................................................................5-22
Inserting MultiBay Devices........................................................................................................5-23
5.8 PC Cards........................................................................................................................................5-24
Removing a PC Card...................................................................................................................5-25
Inserting a PC Card.....................................................................................................................5-26
iv Contents
5.9 Memory Expansion.......................................................................................................................5-27
Removing the Memory Expansion Compartment Cover...........................................................5-27
Removing a Memory Expansion Board .....................................................................................5-29
Installing a Memory Expansion Board.......................................................................................5-30
Installing the Memory Expansion Compartment Cover ............................................................5-31
5.10 Keyboard Assembly....................................................................................................................5-32
5.11 CPU Cover..................................................................................................................................5-35
5.12 Power Supply..............................................................................................................................5-38
5.13 Fan Assembly..............................................................................................................................5-42
5.14 Audio Board................................................................................................................................5-43
5.15 Lithium Disk Cell Battery ..........................................................................................................5-44
5.16 Auxiliary Battery ........................................................................................................................5-45
5.17 Mini PCI Riser Board.................................................................................................................5-46
Installing a Modem, LAN, or Combo Card................................................................................5-47
5.18 USB Board..................................................................................................................................5-49
5.19 Display Assembly.......................................................................................................................5-51
5.20 System Board..............................................................................................................................5-54
chapter 6
SPECIFICATIONS
6.1 Physical and Environmental...........................................................................................................6-1
6.2 Display ............................................................................................................................................6-2
6.3 Hard Drive.......................................................................................................................................6-3
6.4 Diskette Drive.................................................................................................................................6-4
6.5 CD-ROM Drive ..............................................................................................................................6-5
6.6 DVD-ROM Drive ...........................................................................................................................6-6
6.7 LS-120 Drive ..................................................................................................................................6-7
6.8 Battery Pack....................................................................................................................................6-8
6.9 System DMA...................................................................................................................................6-8
6.10 System Interrupts..........................................................................................................................6-9
6.11 System I/O Addresses.................................................................................................................6-10
6.12 System Memory Map..................................................................................................................6-12
appendix A
CONNECTOR PIN ASSIGNMENTS .....................................................................................................................A-1
appendix B
POWER CORD SET REQUIREMENTS .................................................................................................................B-1
INDEX ........................................................................................................................................................... I-1
Contents v
preface
USING THIS GUIDE
This Maintenance and Service Guide is a troubleshooting reference that can be used
when servicing the Compaq Armada E700 Series of Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq
Armada E700 Series 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 in the
caution could result in damage to equipment or loss of information.
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 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: The computer is designed to be electrically grounded. To ensure proper
!
operation, plug the AC power cord into a properly grounded electrical outlet only.
CAUTION: To properly ventilate the system, you must provide at least 3 inches (7.62 cm)
of clearance on the left and right sides of the computer.
Preface vii
Serial Number
When requesting information or ordering spare parts, provide the computer serial
number. The serial number is on the bottom of the computer.
Locating Additional Information
The following documentation provides information for the computer:
■ Compaq Armada E700 Series of Personal Computers documentation set
■ Compaq Armada E700 Series of Personal Computers Technical Reference Guide
■ Microsoft Operating System Manual
■ Compaq Service Training Guides
■ Compaq Service Advisories and Bulletins
■ Compaq QuickFind
■ Compaq Service Quick Reference Guide
■ Compaq Internet site at http://www.Compaq.com
viii Preface
chapter
1
PRODUCT DESCRIPTION
1.1 Computer Features and Models
The Compaq Armada E700 Series of Personal Computers offers advanced modularity,
an Intel Pentium II processor with 64-bit architecture, an industry-leading Accelerated
Graphics Port (AGP) implementation, and extensive multimedia support. The computer
provides desktop functionality and connectivity through the optional Compaq expansion
base and compaq convenience base.
Figure 1-1. Compaq Armada E700 Personal Computer
Product Description 1-1
Models
The Armada E700 models are shown in Table 1-1. The computer model designation is
composed of a group of characters that define each model’s features.
Table 1-1
Models and Model Naming Convention
Compaq Armada E700 Series of Personal Computers
Key
E7006400T1414.0 V M 1
A B CDEFGHI
Key Description Options
A Line designator E = Expandability M = Mobility V = Value
B Series designator 700 = Armada 700
C Processor type 6 = Intel Mobile Pentium II processor with MMX technology
D Processor speed 400 = 400 MHz
E Panel type T14 = 14.1” XGA TFT 1024 × 768
F Hard drive capacity 14.1 = 14.1 GB 10.0 = 10.0 GB
G Drive type V = DVD-ROM D = CD-ROM 0 = none
H Modem M = internal or PC
Card modem
I Operating system &
software version
0 = No operating system
1 = Windows 95
2 = Windows 98
Model Memory
Armada E700 6400 T14 14.0 V C 3 128 MB EasyPoint IV 113363-XXX
Armada E700 6400 T14 14.0 V M 3 128 MB EasyPoint IV 113364-XXX
Armada E700 6400 T14 14.0 V 0 3 128 MB EasyPoint IV 113365-XXX
Armada E700 6400 T14 14.0 V C 1 128 MB EasyPoint IV 113366-XXX
Armada E700 6400 T14 14.0 V M 1 128 MB EasyPoint IV 113367-XXX
Armada E700 6400 T14 14.0 V 0 1 128 MB EasyPoint IV 113368-XXX
C = combination
modem/NIC
3 = Windows NT 4.0
4 = Windows 2000
0 = audio only
Pointing
Device SKU#
1-2 Product Description
Features
The computer has the following standard features:
■ Intel Mobile 400-MHz Pentium II processor with 64-bit architecture, MMX
technology, and 512-Kbyte, level-2 cache memory
■ Industry-leading portable computer AGP implementation, featuring:
- 66-MHz dedicated graphics bus
- frame made AGP
■ 4-MB SGRAM (synchronous graphics)
■ 128-MB of SDRAM (synchronous) on system board; expandable to 384 MB
■ Upgradable flash ROM BIOS
■ 14.1-inch XGA (1024 × 768) TFT color display, true color (24-bit) support
■ Keyboard with built-in EasyPoint IV pointing device and mouse buttons or
touchpad and touchpad mouse buttons
■ Lithium ion (Li-ion) battery pack
■ Removable 14.0- and 10.0-GB hard drive
■ MultiBay that supports a second hard drive, a second battery pack, a diskette drive,
a CD-ROM drive, or a DVD-ROM drive
■ Two PC Card slots that accept 32- and 16-bit Type I, II, and III PC Cards, with
zoomed video interface in the bottom slot
■ IrDa-compliant infrared port
1
(4-Mbps standard) for wireless file transfer, printing,
and file synchronization
■ Built-in stereo speakers featuring Compaq PremierSound, microphone, and jacks
for stereo audio sound with electronic equalization and wave table synthesis
■ Energy Star-compliant power saving features
■ Ports and connectors for external equipment, including universal serial bus (USB),
serial, parallel, external monitor, and PS/2-compatible pointing device or keyboard
■ Security features
■ Desktop functionality available with the optional Compaq expansion base and
Compaq convenience base
■ Domestic and international modem and Ethernet connectivity
■ Integrated AC Adapter
■ Integrated V.90 56-Kbps data/fax modem
1
IrDa 4MB compliant. Infrared performance may vary depending on performance of infrared peripherals, distance
between infrared devices, and applications used.
Product Description 1-3
Intelligent Manageability
Intelligent Manageability consists of preinstalled software tools for the computer and
Compaq servers that assist in tracking, troubleshooting, protecting, and maintaining the
computer. It provides the following functions:
■ Asset Management—provides detailed configuration and diagnostic information.
■ Fault Management—prevents, predicts, and alerts of impending hardware
problems.
■ Security Management—protects unauthorized access to data and components.
■ Configuration Management—optimizes the computer by providing the latest
drivers, utilities, and software, which are available on CD-ROM and the Compaq
Web site at www.compaq.com/support/portables.
NOTE: For further help with Intelligent Manageability, select Start ➔ Compaq
Information Center ➔ Intelligent Manageability
Accessing the Web Agent
The computer may have a preinstalled Web Agent that allows computer configuration
information to be viewed using Web technology. To access this feature, select Start ➔
Compaq Information Center ➔ Insight Web Management.
If the computer does not have a preinstalled Web Agent, it can be downloaded from the
Compaq Web site at www.compaq.com.
Asset Management
AssetControl enables component information to be retrieved when on the road or
connected to the network.
AssetControl also enables the network administrator to remotely retrieve information
from any Compaq computer connected to the network. The information can be used to
assist in tracking and maintaining the computer and its components. It provides the
following information:
1-4 Product Description
■ Inventory information—The network administrator can retrieve information about
the computer over the network by using Compaq Insight Manager or any PC
management tool provided by Compaq Solution Partners. Asset control information
retrieved from the computer includes:
■ Manufacturer, model, and serial number of Compaq computers, monitors, hard
drives, battery packs, memory boards, processor speeds, and operating systems
■ Asset tag
■ System board and ROM revision levels
■ BIOS settings
■ Diagnostic information—Diagnostics for Windows includes information on hard
drives, ports, and video, sound, and other components. This application also allows
the user to run multithreaded tests on hardware components. If problems are found,
recommendations are provided.
All of the above information can be viewed, printed, or saved.
Fault Management
Fault Management features minimize downtime and data loss by monitoring system
performance and generating the following alerts:
■ Hard drive alert—provides 72-hour advance warning of impending hard drive
problems and can automatically start optional backup software.
■ System temperature alert—reports overheating. As the system temperature rises,
this feature first adjusts fan speed and other cooling components, then displays an
alert, then shuts down the system.
■ Battery pack alert—reports charging problems and battery pack failure.
■ Monitor alert—diagnoses and displays external monitor operational problems.
■ Memory alert—reports memory board configuration changes when a memory
board is removed, added, or reconfigured. It also provides the previous and current
configurations for comparison.
The alerts work with or without network connection. If the computer is not connected to
the network, the network administrator cannot receive alerts from the computer.
Product Description 1-5
Fault Management Alerts
Alerts can be enabled, disabled, and tested, and software can be set to back up
information whenever a hard drive alert occurs.
■ While the computer is connected to a network, alerts pop up on the computer
display and are simultaneously reported to the network console.
■ System temperature alert—reports overheating. As the system temperature rises,
this feature first adjusts fan speed and other cooling components, then displays an
alert, then shuts down the system.
■ When the computer is not connected to a network, the user will receive a local alert.
To set alerts, select the Intelligent Manageability icon in the system tray.
Security Management
Security Management features customize system security.
■ Power-On and Setup Passwords—prevent unauthorized access to information and
computer configuration.
■ DriveLock—prevents unauthorized access to hard drives.
■ Device disabling—prevents unauthorized data transfer through modems, serial
ports, parallel ports, and infrared ports on the computer and an optional docking
station.
■ QuickLock/QuickBlank—locks the keyboard and clears the screen.
■ Ownership Tag—displays ownership information during system restart.
1-6 Product Description
Configuration Management
Configuration Management optimizes software upgrade and customer support
procedures. Compaq provides support software to optimize the performance of the
computer. This support software is accessible through a monthly CD-ROM
subscription. Support software can also be downloaded from the Compaq Web site at
www.compaq.com/support/ portables.
Managing Power
The computer comes with a collection of power management features that allow battery
operating time to be extended and power to be conserved. Use power management to
monitor most computer components such as the hard drive, processor, and display.
Accessing Power Management
In Windows 95, select StartÅSettingsÅControl PanelÅPower to view or adjust
settings in Power Properties.
NOTE: If Windows NT 4.0 is running, select Compaq Power instead of Power. If
Windows 98 is running, select Power Management.
Power Management Levels
To extend the life of batteries, use the Battery Conservation tab in Power Properties. If
Windows 95 is running, select Start Å Settings Å Control Panel Å Power to access
Power Properties.
NOTE: If Windows NT 4.0 is running, select Compaq Power instead of Power. If
Windows 98 is running, select Power Management.
The level of battery conservation or selection of preset power management levels can be
customized.
Product Description 1-7
1.2 Computer Components
System Memory Options
The main memory subsystem supports a minimum standard 128 MB of Synchronous
SDRAM, expandable to 384 MB. The minimum standard Synchronous SDRAM is
integrated on the system board. The upgrade SDRAM is accomplished with memory
expansion boards that are available in 32-, 64-, and 128-MB.
The memory expansion slot cover is secured to the computer by a slotted Torx T-8
screw. A tamper-resistant security screw, included with the computer, can be used to
provide added security. The security wrench, also included with the computer, must be
used to remove the tamper-resistant security screw.
System memory can be upgraded as shown in Table 1-2.
Table 1-2
Memory Upgrade
Base Memory on System Board Memory Expansion Board Total Memory
128 MB 256 (2 × 128 MB) 384 MB
128 MB 192 (1 × 128 MB + 1 × 64 MB) 320 MB
128 MB 160 (1 × 128 MB + 1 × 32 MB) 288 MB
128 MB 128 (1 × 128 MB or 2 × 64 MB) 256 MB
128 MB 96 (1 × 64 MB + 1 × 32 MB) 224 MB
128 MB 64 (1 × 64 MB or 2 × 32 MB) 192 MB
128 MB 32 (1 × 32 MB) 160 MB
1-8 Product Description
Power Equipment
The following battery options are available:
■ Lithium ion battery pack
■ Battery Charger
■ Automobile Power Adapter/Charger and Aircraft Power Adapter
Lithium Ion Battery Pack
The battery pack can be used in the computer dedicated battery bay, computer
MultiBay, Compaq expansion base MultiBays, and Compaq convenience base MultiBay
and battery charging bay.
Battery Charger
The external Battery Charger has the following features:
■ Two battery charging bays
■ Charging of one battery in 1.5 hours
■ Charging of two batteries in 3 hours
Automobile Power Adapter/Charger and Aircraft Power Adapter
The Automobile Power Adapter/Charger and Aircraft Power Adapter allows the
computer to operate from a 12-volt aircraft DC socket and from an automobile cigarette
lighter receptacle.
Product Description 1-9
Mass Storage Devices
The following mass storage devices are available for the computer.
Table 1-3
Mass Storage Devices
Device Capacity
Diskette drive 3.5-inch, 1.44 MB, 720 Kbyte, and 1.2 MB (Japanese format)
Hard drive 14.0 and 10.0 GB (also available as an option)
CD-ROM drive 24-Speed Max (available as an option)
DVD-ROM 4.7 GB
SuperDIsk LS-120 drive 120 MB (available as an option)
External diskette drive 3.5-inch, 1.44 MB
Diskette Drive
The computer uses a 3.5-inch diskette drive that fits into the computer, Compaq
expansion base, or Compaq convenience base MultiBays. The diskette drive is a threemode type that is compatible with 1.44-MB, 1.2-MB, and 720-Kbyte (formatted) AT
drive types. The system supports a maximum of two diskette drives: one in the
computer MultiBay and one in the Compaq expansion base or Compaq convenience
base MultiBay.
Hard Drive
The dedicated hard drive bay supports a removable 14.0- or 10.0-GB hard drive. The
MultiBay supports a second hard drive. Before a hard drive can be used in the
MultiBay, it first must be inserted in the Hard Drive MultiBay Adapter.
CD-ROM Drive
A 24-speed Max CD-ROM drive is available as an option. The drive supports 3.5-inch
and 5.25-inch media in the following formats:
■ ISO-9660, the most common CD-ROM format
■ CD-ROM XA eXtended Architecture, a standard for storing multimedia
information
■ Photo CD (single and multisession), Kodak’s format for storing photographic
images on CD-ROM
■ CD-i and CD-i Bridge
■ CD-DA (digital audio)
■ CD-ROM Mode 1 and Mode 2
■ CD-I Mode 2 (Form 1 and Form 2)
■ Video CD
1-10 Product Description
1.3 Computer External Components
The external components on the display and left side of the computer are shown in
Figure 1-2 and described in Table 1-4.
Figure 1-2. Display and Left Side Components
Table 1-4
Display and Left Side Components
Item Component Function
1
2
3
4
5
6
7
Fan Provides airflow exhaust.
Video out jack Connects a television, VCR, camcorder,overhead projector, or
video capture card.
NOTE: These connections require the use of optional videl
cables and the video out adapter included with the computer.
Hard drive bay Accepts removable hard drive. Holds primary hard drive.
Audio bass port Enhances sound.
Security slot Attaches an optional security cable to the computer.
Mono microphone Allows for audio input; located on the inside and outside of the
display, can be used whether the computer is open or closed.
Display release latch Opens the computer.
Product Description 1-11
The external components on the front panel of the computer are shown in Figure 1-3
and are described in Table 1-5.
Figure 1-3. Front Panel Components
Table 1-5
Front Panel Components
Item Component Function
1
2
3
4
5
6
Mono microphone jack Connects mono microphone, disabling the built-in microphone.
Stereo speaker/headphone jack Connects external stereo speakers, headphones, or headset.
This jack is driven by an amplifier and has volume control. The
internal computer speakers are turned off when external
speakers or headphones are plugged into this jack.
Stero line-in jack Connects external device such as a CD player, tuner, or
tape deck.
Battery bay Accepts Lithium ion battery pack.
Top MultiBay Supports a 12.7-mm Armada drive or a MultiBay battery pack.
Bottom MultiBay Supports a 12.7-mm Armada drive or a MultiBay battery pack.
Also supports a 17-mm Armada hard drive or a Dual-MultiBay
battery pack, which fills both the top and bottom MultiBays.
1-12 Product Description
The external components on the right side of the computer are shown in Figure 1-4 and
are described in Table 1-6.
Figure 1-4. Right Side Components
Table 1-6
Right Side Components
Item Component Function
1
2
3
4
5
Audio bass port Enhances sound.
RJ-45 jack (network models only) Connects the network cable.
NOTE: A network cable is included with network models.
RJ-11 jack (internal modem
models only)
PC Card slots Accepts 16- and 32-bit CardBus PC Cards.
PC Card eject levers (2) Eject PC Cards from the slots.
Connects the modem cable to an internal modem.
NOTE: A modem cable is included with internal modem models.
Connects a standard telephone cable for a modem in North
America, Latin America, Japan, China, and Hong Kong only.
Product Description 1-13
The external components on the rear panel of the computer are shown in Figure 1-5 and
described in Table 1-7.
Figure 1-5. Rear Panel Components
Table 1-7
Rear Panel Components
Item Component Function
1
2
3
4
5
6
7
8
9
Infrared port Provides wireless communication between the computer and
Universal serial bus (USB)
connector
Serial connector Connects optional serial devices such as a mouse.
Parallel connector Connects optional parallel devices such as a printer.
Docking connector Connects optional Compaq expansion base or Compaq
Keyboard/mouse connector Connects an optional full-sized keyboard or a mouse. Both
External monitor connector Connects an optional external monitor or a television adapter.
DC power connector Connects an AC Adapter (external adapter models only), an
Power cord connector Connects external (AC) power.
another infrared-equipped device using an infrared beam.
Connects USB devices, such as cameras for video conferencing,
or hubs which connect multiple USB devices. This connector is
a powered hub. When running Windows 95 or higher or
Windows NT or higher, any combination of up to five powered or
unpowered hubs can be connected in any sequence, as long as
two unpowered hubs are not connected next to each other.
When running a lower version of Windows or Windows NT, or a
different operating system, up to two hubs can be connected.
convenience base.
external mouse and computer pointing device are active. An
optional splitter/adapter allows both an external keyboard and
mouse to be used at the same time.
optional Automobile Power/Adapter Charger, or an optional
Aircraft Power Adapter.
1-14 Product Description
Computer keyboard components are shown in Figure 1-6 and described in Table 1-8.
Figure 1-6. Computer Components: Keyboard
Table 1-8
Keyboard Components
Item Component Function
1 Numeric lock light Turns on when the Numeric Lock function is on.
2 Scroll lock light Turns on when the Scroll function is on.
3 Caps lock light Turns on when the Caps Lock function is on.
4 Display switch Turns off the display if it is closed while the computer is turned
5 Vents Allow airflow to cool the computer.
6 EasyPoint IV pointing stick
7 Windows application key Displays shortcut menu for item beneath mouse cursor.
8 Stereo speakers Produce stereo sound.
9 Left and right mouse buttons
10 Scroll pointing stick button
11 Fn key Used with hotkeys to perform perset hotkey functions.
12 Caps lock key Turns on the caps lock function.
13 Power switch Turns the computer on or off of exits Suspend1.
14 Volume control Adjusts volume of stereo speakers.
15 Suspend button
(pointing stick models only)
(pointing stick models only)
(pointing stick models only)
2
on. The computer beeps unless audio has been disabled.
Moves the mouse cursor.
Function like left and right mouse bottons on an external mouse.
Can be set to scroll, magnify, or function like the third button on
an external mouse.
Initiates or exits Suspend1. When pressed with the Fn key,
initiates Hibernate.
Product Description 1-15
Additional computer keyboard components are shown in Figure 1-7 and described in
Table 1-9.
Figure 1-7. Keyboard Components (continued)
Table 1-9
Keyboard Components (continued)
Item Component Function
1 Page up key Moves image to previous screen.
2 Page down key Moves image to following screen.
3 Embedded numeric keypad Converts keys to numeric keypad.
4 Cursor-control keys Move the cursor around the screen.
5 Control key Used with selected alphabetic keys to access File and Edit menu
6 Touchpad (touchpad models only) Moves the mouse cursor, selects, and activates.
7 Left and right touchpad buttons
(touchpad models only)
8 MultiBay drive light (green) Turns on when a MultiBay device is being accessed or a battery
9 Hard drive light (green) Turns on when the hard drive is being accessed.
10 Power/suspend light (green) Turns on when computer is turned on; blinks in Suspend; turns
11 Battery power light (orange) Turns on when a battery pack in the battery bay is charging or
12 Microsoft logo key Displays the Windows Start menu.
13 F1 through F12 function keys Perform preset functions.
options.
Function like the left and right mouse buttons on an external
mouse.
pack in the MultiBay is charging or waiting to be charged.
off when computer is in Hibernation or turned off.
waiting to charge. Turns off when battery pack is fully charged.
Blinks six times if low-battery condition is reached. Blinks
continuously if critical low-battery condition is reached. If AC
power is not connected within 20 seconds, Hibernation is
initiated (unless Hibernation has been disabled).
1-16 Product Description
The external components on the bottom of the computer are shown in Figure 1-8 and are
described in Table 1-10.
Figure 1-8. Bottom Components
Table 1-10
Bottom Components
Item Component Function
1
2
3
4
5
6
7
8
9
Tilt feet latches Release the tilt filt.
NOTE: To close the tilt feet, press the feet against the bottom of
the computer.
Tilt feet Tilt the computer for ease of use.
Memory expansion compartment
cover
Hard drive release latch Releases the hard drive from the hard drive bay.
Battery release latch Releases the battery from the battery bay.
Docking restraint latch recess Secures the computer to the expansion base.
Front MultiBay release latch Releases a MultiBay device from the bottom MultiBay or a
Rear MultiBay release latch Releases a MultiBay device from the top MultiBay.
Serial number Identifies the computer; needed when caling Compaq customer
Covers the memory expansion compartment.
device which occupies both the top and bottom MultiBays.
support.
Product Description 1-17
1.4 Design Overview
This section presents a design overview of key parts and features of the computer. For
assembly/disassembly instructions for the parts described in this section, refer to
Chapter 5.
System Board
The system board provides the following device connections:
■ Memory expansion board
■ MultiBay device
■ Hard drive
■ Display
■ Keyboard/EasyPoint IV pointing device or touchpad
■ Audio
■ Pentium II processor
■ Fan
■ PC Cards
■ Modem
The computer is equipped with a 3.1-volt, Intel Mobile Pentium II 400-MHz processor.
For ventilation, an electrical fan is installed. The fan operates on from 5 to 12 volts and
is controlled by a temperature sensor. The fan is designed to turn on automatically when
high temperature conditions exist. These conditions are affected by high external
temperatures, system power consumption, power management/battery conservation
configurations, battery fast charging, and software applications. Exhaust air is displaced
through the ventilation grill located on the left side of the computer.
1-18 Product Description
CAUTION: To properly ventilate the computer, allow at least a 3-inch (7.6-cm) clearance
on the left and right sides of the computer.
chapter
2
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. If you are unable to run POST or if the problem persists after running POST,
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 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 recommended removal and replacement procedures.
■ If the problem is intermittent, check the computer several times to verify that the
problem is solved.
The following table describes the troubleshooting actions:
If You Want To: Then Run:
Check for POST error messages POST
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 Setup
Troubleshooting 2-1
2.1 Preliminary Steps
IMPORTANT: Use AC power when running POST or Computer Setup. A low battery
condition could initiate Hibernation and interrupt the test.
Before running POST, 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.
If you are running Compaq Utilities from diskette, insert the Compaq Utilities
diskette in drive A. Turn on or restart the computer.
b. Press Enter to accept OK.
c. Select Prompted Diagnostics.
d. After “Identifying System Hardware” completes, select Interactive Testing and
follow the instructions on the screen.
2-2 Troubleshooting
2.2 Clearing Passwords
1. Turn off the computer.
2. Disconnect the AC Adapter (refer to Section 5.3).
3. Remove the battery pack (Section 5.6).
4. Disconnect and remove the Real Time Clock (RTC) battery (Section 5.11).
5. Wait five minutes.
6. Reconnect the RTC battery.
7. Install the keyboard deck and keyboard assembly.
8. Reconnect the AC Adapter. Do not reinstall the battery pack yet.
9. Turn on the computer.
NOTE: Remember to set the date and time the next time the computer is turned on.
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, then stops.
■ The system emits a series of beeps, then 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.
If you receive one of the error messages listed below, follow the recommended action.
Table 2-1
Warning Messages
Message Description Recommended Action
CMOS checksum invalid, run SCU CMOS RAM information has
been corrupted.
CMOS failure, run SCU CMOS RAM has lost power. Run Computer Setup to reinitialize
Diskette controller error The diskette drive controller
failed to respond to the
recalibrate command.
Diskette track 0 failed The diskette drive cannot read
track 0 of the diskette in the
drive.
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.
Continued
2-4 Troubleshooting
Table 2-1
Hard disk controller error The hard drive controller failed
Keyboard controller failure The keyboard failed the self-
Keyboard failure The keyboard failed to respond
No interrupts from Timer 0 The periodic timer interrupt is
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
Continued
to respond to the reset
command.
test command.
to the RESET ID command.
not occurring.
An illegal adapter ROM was
located at the specified
address.
real time clock have been
corrupted, possibly by a power
loss.
when trying to access the hard
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 ScanDisk.
2. Check disk in DOS and
Windows 95.
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 2-2
Fatal Error Messages
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
*Beep codes are defined in Table 2-3.
3
4
0
1
5
2
Troubleshooting 2-5
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