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.
Copyright 1994 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Deskpro, LTE, Contura
Registered U.S. Patent and Trademark Office.
LTE Elite, SmartStation, and MiniStation are trademarks of Compaq Computer
Corporation.
Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.
Windows is a trademark of Microsoft Corporation.
The software described in this guide is furnished under a license agreement
or nondisclosure agreement. The software may be used or copied 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
COMPAQ LTE ELITE FAMILY OF PERSONAL COMPUTERS
COMPAQ SMARTSTATION
First Edition (March 1994)
Part Number 194061-001
Preface
USING THIS GUIDE
This Maintenance And Service Guide is a troubleshooting reference for
servicing the Compaq LTE Elite Family of Personal Computers, the Compaq
SmartStation, the Compaq MiniStation/EN, and the Compaq MiniStation/TR.
The guide is organized into the following parts:
o Part 1:Compaq LTE Elite Computer (Chapters 1 through 5)
o Part 2:Compaq SmartStation (Chapters 6 through 10)
o Appendices
Compaq Computer Corporation reserves the right to make changes to the
Compaq LTE Elite Family of Personal Computers and its options without
notice.
SYMBOLS AND CONVENTIONS
The following format conventions distinguish elements of the text
throughout this guide:
o When keys must be pressed at the same time, the action is represented by
the key names and the plus (+) symbol. For example, Ctrl+Alt+Delete.
o The names of files are presented in uppercase, as shown here:
FILENAME.
o The names of commands or directories are presented in uppercase type as
shown here: COMMAND or DIRECTORY. Commands that are to be entered at the
system prompt are shown on a separate line.
o When you are asked to type something without pressing the Enter key, you
are directed to "type" the information.
o When you need to type information and press the Enter key, you are
directed to "enter" the information.
The following words and symbols mark special messages throughout this
guide:
Only authorized technicians trained by Compaq Computer Corporation 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 circuit board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed circuit board modifications
may void the warranty or exchange allowances.
To properly ventilate the computer or the expansion base, allow at least 3
inches (7.62 cm) of clearance at the back and sides of the units.
To avoid the risk of electric shock or damage to the computer or expansion
base, ensure that all power sources (including the battery pack in the
computer) are disconnected before removing and replacing internal parts.
Compaq SmartStation.The Compaq SmartStation expansion base is designed
for connection to a grounded (earthed) electrical outlet. The grounding
type plug is an important safety feature.To avoid the risk of electric
shock or damage to the equipment, do not disable this feature.
The following documentation is available to support the Compaq LTE Elite
Family of Personal Computers and its options.
o Documentation included with the computer:
- Online USER'S GUIDE
- QUICK SETUP card
- BEYOND SETUP GUIDE
o COMPAQ SMARTSTATION INSTALLATION AND OPERATIONS GUIDE
o COMPAQ MINISTATION INSTALLATION GUIDE
o COMPAQ SERVICE QUICK REFERENCE GUIDE
o Compaq QuickFind
o Compaq Service Advisories and Bulletins
Chapter 1 - Compaq LTE Elite Product Overview
Introduction
This chapter is an overview of the Compaq LTE Elite Family of Personal
Computers and covers the following topics:
o Serial number
o System overview
o Models and features
o Controls and LEDs
o Connectors
o Functional descriptions
o Docking options
o Running Computer Setup
o Reprogrammable flash ROM
o Power Management
o Security
1.1 Serial Number
The computer serial number should be provided to Compaq whenever requesting
information or ordering spare parts. The serial number is located above the
connectors behind the input/output (I/O) connector cover.
1.2 System Overview
The Compaq LTE Elite has the following upgradeable assemblies:
o Hard drive
o Display assembly
o Processor board
o RAM memory expansion board
The Compaq LTE Elite is designed to dock in one of the following options:
o Compaq SmartStation (Figure 1-1)
o Compaq LTE Lite Desktop Expansion base (with a Compaq LTE Lite Upgrade
Adapter)
o Compaq MiniStation/EN or Compaq MiniStation/TR
When docked in one of these options, the computer has the following
additional features:
o A single connection that provides multiple pass-through connections to
options such as a printer, monitor, and other external equipment
o Built-in network and SCSI-2 capability (on the Compaq SmartStation and
Compaq MiniStations only)
o Two internal drive bays (on the expansion bases only)
o Two full size 8-/16-bit Industry Standard Architecture (ISA) expansion
slots (on the expansion bases only)
Computer power is supplied through one of the following sources:
o An internal battery pack
o The computer's internal AC adapter when connected to the power cord
(Figure 1-2)
o The computer's internal AC adapter when docked in a convenience base
o The 198-pin external options connector when docked in an expansion base
(provides DC power)
o Automobile Adapter (provides DC power)
1.3 Models And Features
Models
Table 1-1 lists the Compaq LTE Elite models and model-specific features.
The computer has a display switch mounted on the power interface board
(PIB) located near the display hinge. When the display is closed, this
switch activates the front-mounted power/standby LED and simultaneously
deactivates the display and the top-mounted LEDs.
Trackball
The computer has an integrated PS/2 style trackball located on the display
bezel. The trackball is disabled whenever an external mouse is connected to
the keyboard/mouse connector. The trackball buttons are located on the back
side of the display.
1.5 Connectors
This section covers the I/O pass-through connectors on the computer
(Figure 1-4). Refer to Appendix A for connector pin assignments.
1. AC power
2. Automobile Adapter
3. Serial
4. 198-pin external options
5. Keyboard/mouse
6. Parallel
7. External monitor
8. Numeric keypad
9. PCMCIA
AC Power Connector
When the computer is docked in the convenience base and the convenience
base is turned on, AC power is applied to the computer's AC power
connector. (The 198-pin connector carries all other signals between the two
units.)
Automobile Adapter Connector
The computer has an automobile adapter connector that accepts an 18.5 volt,
1.73 amp DC input from the Automobile Adapter.This connector is covered
by an access door (Figure 1-5).
NOTE: The automobile adapter converts 12 volts DC from the automobile to
The computer has an access door for the automobile adapter connector that
is designed to allow only one type of power input (AC or DC) to be
connected at a time (Figure 1-5). Do not attempt to defeat this protective
feature of the door or internal damage to the computer may result.
The serial connector supports the serial interface which meets EIA RS232C
specifications.
198-Pin External Options Connector
The 198-pin external options connector handles the signal interface between
the computer and the expansion base or convenience base.
NOTE: When connected to an expansion base, power to the computer is carried
through the 198-pin connector (DC power).
Keyboard/Mouse Connector
The keyboard/mouse connector can be connected to a PS/2 mouse or an external
enhanced keyboard. Connecting the mouse/keyboard connector to a mouse
disables the integrated trackball, while connecting the mouse/keyboard
connector to an external keyboard disables the internal keyboard.
Parallel Connector
The parallel connector supports the parallel interface which meets
EPP 1.9 specifications.
External Monitor Connector
The external monitor connector provides an output for an external monitor
with a maximum resolution of 1024 x 768 lines.
NOTE: The computer can simultaneously display on an external monitor and
the integrated display panel.
Numeric Keypad
Connecting the numeric keypad connector to an external numeric keypad
disables the embedded numeric keypad feature.
PCMCIA Connector
The computer has a PCMCIA connector accessible through a PCMCIA slot on the
left side of the computer (refer to "PCMCIA Slot" in Section 1.6). The
PCMCIA connector supports the PCMCIA interface which meets PCMCIA 2.1
specifications.
1.6 Functional Descriptions
This section covers functional descriptions of key parts and features of
the computer. For assembly/disassembly instructions for the parts described
in this section, refer to Chapter 4.
System Board
The system board (Figure 1-6) provides the following:
o Connector for removable hard drive [1]
o PCMCIA connector [2] (refer to "PCMCIA Slot")
o Board-to-board connection to the following devices:
- Power interface board (PIB) [3]
- Processor board [4]
- Memory expansion board (on underside of system board)
o Cable connection to the following devices:
- Internal AC power supply board [5]
- Fan [6]
- Internal keyboard [7]
- Display [8]
- Diskette drive [9]
- LED cable assembly for front-mounted LEDs (on underside of system board)
o Battery charging circuitry and battery contacts [10] for battery pack
o External input/output (I/O) connectors (Figure 1-4)
o DC-to-DC power supply (refer to "DC-to-DC Power Supply" in this section)
o 256 Kbyte flashable shared system ROM and keyboard ROM
o 4 or 8 MB base RAM (depending on the model)
o System controller, which provides the following:
- Interface to the processor board for memory management (including
memory refresh)
- Two DMA controllers
- Two interrupt controllers
- Clock generator
- Programmable interval timer
- System management interrupt (SMI) support logic
- Power management features
o Peripheral controller, which provides the following:
- Integrated keyboard controller
- Industry Standard Architecture (ISA) support logic
- Circuit for interfacing to the hard drive
- Control of parallel and serial interfaces, including serial interfaces
for a numeric keypad, mouse/keyboard, and internal trackball
o PCMCIA controller
o Local bus video controller
o Diskette drive controller
o Docking sense logic
o Secondary temperature sensor for controlling the fan (refer to
"Temperature Sensors")
DC-to-DC Power Supply
The DC-to-DC power supply is integrated into the system board. It converts
DC voltage input to regulated 3.3 volts, 5 volts, and 12 volts DC. The DC
voltage input comes from one of the following sources:
o Internal AC power supply
o Battery pack
o Automobile adapter
o 198-pin external options connector (from expansion base)
o Auxiliary battery
To replace the DC-to-DC power supply, the system board must be replaced.
Processor Board
The SL Enhanced Intel486 processor has an integrated coprocessor and is
upgradeable by replacing the processor board (Figure 1-7). The system
automatically adjusts to the new configuration. In addition, the processor
board contains the primary temperature sensor (refer to "Temperature
Sensors").
Some models have a heat sink attached. The computer comes with one of the
following processors:
o 486 DX4/75 MHz
o 486 DX2/50 MHz
o 486 DX2/40 MHz
NOTE: The 75 MHz processor is also available as an upgrade option.
Temperature Sensors
The primary temperature sensor is located on the processor board and the
secondary temperature sensor is located on the system board. These sensors
turn the fan on when the system approaches maximum reliable operating
temperatures.
If the temperature continues to rise, a system management interrupt (SMI)
is generated that creates a pop-up window (depicting a thermometer) to warn
the user of the temperature overload and the unit goes into Standby within
several seconds. If the temperature continues to rise, the computer turns
itself off.
NOTE: The temperature sensors are integrated into the processor board and
the system board. To replace a temperature sensor, the appropriate
board must be replaced.
Power Interface Board (PIB)
The power interface board (PIB) (Figure 1-8) is mounted to the system board
by a 16-pin connector. The PIB provides the following features:
o Numeric keypad connector
o Speaker and speaker amplifier
o Power switch
o Standby button
o Display switch
o The following LEDs:
- Power/standby
- Scroll lock
- Caps lock
- Num lock
Refer to Section 1.4 for more information on the controls and LEDs listed
above.
Memory Expansion Board
The 4 or 8 MB base RAM memory (depending on the model) may be increased by
adding an optional memory expansion board (Figure 1-9). The memory
expansion board plugs directly into the back side of the system board
(Section 4.6).
The system supports the following 3.3 volt memory expansion boards (which
operate at 70ns):
o4MB
o8MB
o16MB
NOTE: Some early memory expansion boards for the Concerto Family of
Personal Computers (option kit numbers 144790-001 and 144790-002)
operate at 80 ns and do not function properly when installed in the
Compaq LTE Elite Family of Personal Computers, which operate at
70 ns.Use only Compaq LTE Elite memory expansion boards
(Table 3-2).
Refer to the table in Section 5.3 for a list of total RAM memory based on
available system memory and memory obtained from the expansion board.
Internal AC Power Supply (AC-to-DC)
The computer is powered by a high-efficiency, board-mounted, internal
AC-to-DC power supply (Figure 1-10). The power supply provides the computer
with an 18.5 volt DC output for running all computer functions, including
charging the internal battery pack.
Fan
The internal fan (Figure 1-11) draws in fresh air through vent holes in the
PCMCIA compartment door, then exhausts it out the back of the computer.
The fan operates on 5 volts and is controlled by temperature sensors
located near the internal power supply and the processor board. The fan is
designed to turn on automatically when the system approaches maximum
reliable operating temperatures (refer to "Temperature Sensors" in this
section).
The fan is integrated into the input/output (I/O) bracket/fan assembly. To
replace the fan, the I/O bracket/fan assembly must be replaced.
The internal keyboard is connected to the system board by a flex cable. In
addition to the internal keyboard, there is a connector for an external
keyboard/mouse.
Battery Pack
The removable internal nickel metal hydride (NiMH) battery pack connects to
the computer through a set of battery contacts mounted on the system board.
Battery charging functions are controlled by the DC-to-DC converter on the
system board. The battery pack contains RAM memory that saves the last
recorded battery operating time and battery fuel gauge values.
Refer to Appendix B for information on increasing battery pack operating
time, ensuring battery gauge accuracy, conditioning the battery pack, and
disposal of a used battery pack.
Do not crush, puncture, or incinerate the battery pack or short the battery
pack external contacts. Do not open a battery pack, as this damages the
pack, makes it unusable, and exposes potentially harmful battery
components. There are no field-serviceable parts located inside the battery
pack.
The internal auxiliary battery (Figure 1-12), mounted on the I/O bracket,
supplies voltage to the system real-time clock and maintains alarm, time,
date, and configuration information when the battery pack and external
power sources are removed. In addition, the auxiliary battery protects RAM
memory for a one-minute period during Standby to allow a battery pack to be
replaced.
The auxiliary battery has a nickel cadmium cell that supplies 7.2 volts for
50 mAmp hours. The auxiliary battery recharges when the computer is on
while connected to an external power source or the battery pack. It takes
approximately 10 hours to recharge a fully discharged auxiliary battery
using AC power and approximately 20 hours to recharge it using the battery
pack.
Do not crush, puncture, or incinerate the auxiliary battery or short the
auxiliary battery external contacts. Do not open an auxiliary battery, as
this damages the battery, makes it unusable, and exposes potentially
harmful battery components. There are no field-serviceable parts located
inside the battery.
If the computer is unused for approximately 60 days without being connected
to an external power source, a fully charged auxiliary battery will drain
to a critically low level. This may result in loss of alarm, time, and date
information. If this happens, recharge the auxiliary battery or replace it
if it is defective (refer to Section 4.8). Run Computer Setup to restore
the alarm, time, and date information (refer to Section 1.8).
NOTE: CMOS password and configuration information is copied to an EEPROM so
that it is not lost if the auxiliary battery is unplugged or
discharged.
Diskette Drive
The standard 11 mm diskette drive is connected to the system board by a
cable. The drive reads and writes to 3.5-inch 1.44 MB (high density) and
720 kilobyte (double density) diskettes.With the proper software support,
the drive is also capable of reading and writing to 1.2 MB Japanese
standard diskettes.
Hard Drive
The 2.5-inch hard drive (Figure 1-13) is user-removable from the front of
the computer (Section 4.12). The hard drive release button allows the drive
to be removed without disassembling the computer.A connector on the hard
drive enclosure mates to a connector on the system board.
NOTE: The hard drive may have either a metal handle (Figure 1-13) or a
plastic pull tab that is attached directly to the hard drive
enclosure.
Hard drive security clips can be installed to prevent the hard drive from
being removed (refer to Section 4.12). When the security clips are
installed, a lock label should be attached to the front of the hard drive
to indicate that the drive is locked in place.The computer must be
partially disassembled to remove the security clips before the hard drive
can be removed.
NOTE: The Compaq Diagnostics utilities (which include Computer Setup)
reside in a hidden partition on the Compaq LTE Elite hard drive (not
in the ROM). There is no preinstalled software on a new spare hard
drive.When installing a new spare hard drive, the hidden partition
must be created, the diagnostics utilities must be installed, and the
C: partition must be formatted before restoring any data
(Section 4.12). On the option kit hard drives, the hidden partition
is already created and the diagnostics utilities are already
installed.
IMPORTANT: The hard drive must be handled with care.Refer to the cautions
listed in Section 4.12.
Display Assembly
The display assembly (Figure 1-14) is connected to the system unit by
clutches, a display cable and a ground cable. The display assembly includes
an integrated trackball board and an inverter board. The color and
black-and-white TFT display assemblies have an externally adjustable
brightness control slide [1].The color STN display assembly has two
externally adjustable control slides: one for contrast [2] and one for
brightness [3]. The display assembly comes with one of the following
panels, depending on the model:
o 9.5-inch color STN
o 9.5-inch mono TFT
o 8.4-inch color TFT
o 9.5-inch color TFT
IMPORTANT: In order to optimize display quality and ensure regulatory
compliance, many of the parts in the 9.5-inch color TFT display
can be replaced only by replacing the entire display assembly (Section 4.9).
Refer to Section 5.4 for display specifications.
NOTE: A certain number of pixels in the display panel are allowed to be
nonfunctional due to limitations in LCD technology.
PCMCIA Slot
The PCMCIA connector is mounted to the system board. The connector is
accessible through the PCMCIA slot [1], (Figure 1-15), which is covered by
a PCMCIA compartment door. The slot accommodates one of the following card
combinations:
o Two PCMCIA Type I or Type II cards
o One PCMCIA Type III card
The PCMCIA slot supports both 5 volt and 3.3 volt PCMCIA cards in
accordance with PC Card Standard Release 2.1 or later and the Exchangeable
Card Architecture (ExCA) Specification 1.10.
NOTE: PCMCIA stands for Personal Computer Memory Card International
Association. PCMCIA standards continue to change. Many cards on the
market do not comply with the PCMCIA specifications and, therefore,
do not function properly in the computer. To assist users in
selecting compatible PCMCIA devices, Compaq provides a list of
third-party cards that have been tested in Compaq products. To ensure
compatibility, select a Compaq PCMCIA modem or other vendor cards on
the tested list. Call Compaq Reseller Support to have a copy of the
list faxed to you.
1.7 Docking Options
The Compaq LTE Elite docks with the following options (Figure 1-16):
o Compaq SmartStation expansion base
o Compaq LTE Lite Desktop Expansion Base (with an Upgrade Adapter)
o Compaq MiniStation/EN and MiniStation/TR convenience bases
Refer to Appendix D for more information on docking and undocking.
1.8 Running Computer Setup
The Computer Setup utility resides in a hidden partition on the hard drive.
Run Computer Setup for the following situations:
o To configure options
o To update alarm, time, date, or password information
NOTE: Alarm, time, and date information can be lost if the computer is
unused for approximately 60 days without charging the internal
battery pack or without AC power being connected (refer to "Auxiliary
Battery" in Section 1.6). If this information is lost, run Computer
Setup to restore it.
IMPORTANT: Use AC power during Computer Setup procedures. A low battery
condition could initiate Standby and interrupt the program.
To run Computer Setup, complete the following steps:
1. Turn on or restart the computer.
2. Press the F10 key as soon as the cursor moves to the upper-right corner
of the screen.
3. When prompted, select the desired language.
4. Select Computer Setup from the Configuration and Diagnostics menu.
5. Follow the instructions on the screen.
1.9 Reprogrammable Flash ROM
The flash ROM can be reprogrammed to update system firmware and provide the
most recent level of system functionality. In some cases, problems may be
solved by upgrading the ROM.
Erase and reprogram the nonvolatile read only memory (ROM) by using the
ROMPaq utility. The ROMPaq utility is available on the Portables ROMPaq
Upgrade Diskette, which includes on-screen instructions for implementing
the flash ROM upgrade (Table 3-16).
1.10 Power Management
The following power management features are available for conserving AC
power and extending battery operating time:
o Advanced Power Management (APM)
o Power management settings
o Standby
o Hibernation
Advanced Power Management (APM)
APM is installed on the computer and requires no action from the user to
reduce power consumption. APM turns off the processor between keystrokes
and when the system is idle. This function is transparent to the user. APM
also provides occasional screen messages about the battery while in the
Windows environment (for example, low power condition).
Power Management Settings
You can select power conservation settings through Computer Setup, Power
Management, or by pressing the Fn + F7 hotkeys to maximize power for
specific requirements. These settings control the power conservation rate
and the timeout values for various system components. A timeout is
specified period of system or component inactivity. After this period, the
system or component (for example, the hard drive) is shut down to conserve
power until it is accessed again.
If the power conservation rate and timeouts are not selected, the computer
uses the default settings listed in Table 1-3.
Table 1-3. Power Conservation Default Settings
===========================================================================
Display brightness75% of rated brightness100% of rated brightness
Processor speed (MHZ)100% of rated speed100% of rated speed
===========================================================================
Standby
Standby is a power conservation mode for battery or AC power operation
during which most of the components (e.g, hard drive, processor, display)
shut down.
The computer initiates Standby under the following conditions:
o When the user presses the standby button [1] (Figure 1-17).
o After a timeout occurs.
o When the battery pack voltage reaches a low level (if this option is
preselected).
When the user exits Standby (by pressing the standby button again),
information returns to the screen at the point where Standby was initiated.
Under battery power, the computer can maintain Standby for up to 120 hours.
NOTE: The computer cannot initiate Standby under the conditions listed
above when docked in an expansion base or a convenience base. In
addition, the computer cannot initiate Standby if there is activity
from the hard drive, diskette drive, mouse, keyboard, PCMCIA slot,
parallel connector, or serial connector.
Hibernation
Hibernation is a power conservation mode that performs the following
functions:
o Locks the keyboard and clears the screen.
o Saves all current information in memory and the place in the application
to the hard drive.
o Turns the computer off.
Hibernation is preenabled on the computer and the Hibernation file is
preinstalled on the hard drive. The Hibernation file is slightly larger
than the total RAM memory of the computer (system memory and memory
expansion board).
Hibernation is initiated by one of the following means:
o Automatically according to the preselected system timeout.
o Automatically when the battery reaches a low battery level if
preselected.
o Manually by simultaneously pressing the Fn key and standby button.
When the computer is turned on again, the system exits Hibernation and the
user is returned to the previous place in the application from the hard
drive.
NOTE: Hibernation cannot be initiated when the computer is in an expansion
base or a convenience base.
Battery Operating Time
Battery operating time is affected by variables such as the following:
o Power conservation settings
o Hardware configuration
o Software applications
o Installed options
o Display brightness
o Hard drive usage
o Changes in operating temperature
o Type and number of installed PCMCIA cards
Refer to Appendix B for information on increasing battery pack operating
time, ensuring battery gauge accuracy, conditioning the battery pack, and
disposal of a used battery pack.
1.11 Security
The computer has the following security features:
o Power-on password and setup password.
o The ability to disable certain components, such as the keyboard, diskette
drive, display, PCMCIA slot, parallel connector, and serial connector, to
prevent unauthorized access.
o Provision for an optional cable lock (Figure 1-18) to lock the computer
to an immovable object.
NOTE: For procedures to clear the power-on password, refer to "Clearing the
Power-On Password" in Section 2.1.
NOTE: The cable lock, Kensington MicroSaver Security System Model 64068
(Figure 1-19), is available from Kensington Microwave Limited or
major computer resellers worldwide at 1-(415)-572-2700. The cable
lock is not available through Compaq.
Chapter 2 - Compaq LTE Elite Troubleshooting
Introduction
This chapter covers troubleshooting information for the computer. The basic
steps in troubleshooting include:
1. Following the preliminary steps listed in Section 2.1.
2. Running the Power-On Self-Test (POST) as described in Section 2.2.
3. Running Computer Checkup (TEST) as described in Section 2.3.
4. Following the recommended actions described in the diagnostic tables in
Section 2.4 if you are unable to run POST or Computer Checkup or if the
problem persists after they are run.
When following the recommended actions in Section 2.2, 2.3, and 2.4, carry
them out in the order given.Rerun POST and Computer Checkup after each
recommended action until the problem is solved and no error message occurs.
(Once the problem is solved, do not complete the remaining recommended
actions.)
NOTE: If the problem was intermittent, check the unit several times to
verify that the problem is solved.
Refer to Chapter 4 for any removal and replacement procedures that are
recommended.
2.1 Preliminary Steps
IMPORANT: Use AC power when running POST, Computer Setup, and Computer
Checkup. A low battery condition could initiate Standby and
interrupt the program.
Before running POST and Computer Checkup, complete the following
preliminary steps:
1. If a power-on password has been established, type the password and press
the Enter key.
NOTE: The key symbol (o--m) appears on the screen when the computer is
turned on to indicate that a power-on password is established. If
the password is unknown, it must be cleared (refer to "Clearing
the Power-On Password").
2. Run Computer Setup (Section 1.8).
3. Position the brightness and contrast control slides approximately in the
center of their range and leave the display open.
4. Turn off the computer and external devices.
5. Disconnect any external devices that you do not want to test. (Do not
disconnect the printer if you want to test it or use it to log error
messages.)
NOTE: If a problem only occurs when an external device is connected to
the computer, the problem may be with the external device or its
cable.Verify this by running POST with and without the external
device connected.
6. Install loopback plugs in the serial and parallel connectors if you
would like to test these ports (Table 3-13).
7. Ensure that the removable hard drive is installed in the computer.
8. Ensure that the battery pack is inserted in the computer and the
computer is connected to an external AC power source.
When the preliminary steps are complete, you are ready to run POST
(Section 2.2) and Computer Checkup (Section 2.3).
Clearing the Power-on Password
Clearing the power-on password clears CMOS, the EEPROM that contains
configuration information for all external devices, the setup password, and
all other security features including:
o QuickLock
o QuickBlank
o Diskette drive disable
o Diskette boot ability disable
o Serial port disable
o Parallel port disable
o PCMCIA slot disable
NOTE: Disconnecting the auxiliary battery does not clear the power-on
password.
If the password is unknown, clear it by completing the following steps:
1. Turn off the computer.
2. Disconnect the power cord.
3. Remove the battery pack (Section 4.5).
4. Remove the keyboard cover (Section 4.7).
5. Remove the keyboard, but don't disconnect the cable (Section 4.10).
Place the keyboard toward the front of the system unit to access the
jumper located near the lower-right corner of the processor board.
NOTE: The pins used by the jumper are labeled on the system board as
"1," "2," and "3." (Pin "1" is toward the rear of the computer.)
The jumper can be placed simultaneously on pins 1 and 2 (the
"1-2" or "normal" position [1]) or on pins 2 and 3 (the "2-3" or
password-clearing position [2]). Refer to Figure 2-1.
6. Move the jumper from the normal "1-2" position [1] to the "2-3"
position [2] (Figure 2-1).
7. Insert the battery pack.
IMPORTANT: Ensure that the battery pack is charged since a low battery
condition could initiate Standby and interrupt the
procedure.
8. Turn on the computer.
The ROM clears the power-on password during POST.
9. After POST finishes, turn off the computer.
10. Remove the battery pack.
11. Move the jumper back to the normal "1-2" position.
12. Insert the battery pack.
13. Turn on the computer to verify that the power-on password has been
cleared. If it has not been cleared, remove the battery pack and then
repeat steps 6 through 13. If the password is still not cleared,
replace the system board (Section 4.17).
14. Replace the keyboard.
15. Replace the keyboard cover.
16. Reconnect the power cord to the external outlet.
17. Run Computer Setup (Section 1.8) to reconfigure the system and reset
the power-on and setup passwords.
2.2 Power-On Self-Test (POST)
The Power-On Self-Test (POST) is a series of diagnostic tests that run
automatically when the system is turned on. POST detects which types of
mass storage devices are installed in the computer and checks that the
following assemblies are functioning properly:
o Diskette drive
o Display
o External keyboard
o Hard drive
o Internal keyboard controller
o Memory expansion board
o Processor board
o Speaker on the power interface board (PIB)
o System board
o System memory
o Trackball assembly (POST identifies the trackball but does not actually
test it.)
o Video controller circuitry
Running POST
To run POST, complete the following steps:
1. Turn off the computer.
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 and starts (boots) from the hard
drive (or from a bootable diskette if one is installed in the diskette
drive).
If POST detects errors, the errors are indicated by screen and/or audible
messages. Refer to "Power-On Self-Test (POST) Error Messages" in this
section for a list of POST error messages, probable causes, and recommended
actions.
Run Computer Checkup after POST runs successfully (Section 2.3).
NOTE: 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 2.4.
Power-On Self-Test (POST) Error Messages
Table 2-1 lists visual error messages for POST, audible (beep) error
messages, probable causes, and recommended actions.
Table 2-1. Power-On Self-Test Messages
===========================================================================
MessageBeepsProbable CauseRecommended Action
===========================================================================
101 - ROM Error1 Long,System ROM checksum1. Inspect the ROM
1 Shortinvalid.placement.
2. Replace the ROM.
3. Flash the ROM.
4. Replace the system
board.
--------------------------------------------------------------------------101 - I/0 ROMNoneOption ROM checksum1. Inspect the ROM
Errorinvalid.placement.
2. Verify the correct
ROM.
3. Replace the ROM.
--------------------------------------------------------------------------102 - SystemNoneDefective DMA,1. Replace the system
Board Failuretimers, etc.board.
--------------------------------------------------------------------------301 - KeyboardNoneKeyboard failure.The following steps
Errorapply to both 301 error
codes:
301 - KeyboardNoneKeyboard failure.
Error or Text1. Reseat external
Fixturekeyboard cable and
Installedfree any stuck keys.
2. Replace keyboard.
3. Replace system board.
===========================================================================
MessageBeepsProbable CauseRecommended Action
===========================================================================
303 - KeyboardNoneSystem boardReplace the system
Controller Errorkeyboardboard.
controller
failure.
--------------------------------------------------------------------------304 - KeyboardNoneDefective keyboard.Check external keyboard.
or System Unit
Error----------------------------------------------
Defective systemReplace system board.
board.
--------------------------------------------------------------------------40X - Parallel2 ShortBoth externalRun Computer Setup.
Port X Addressand internal ports
Assignmentare assigned to
Conflictparallel port X.
--------------------------------------------------------------------------401 - PrinterNoneDefective printerReplace the system
Errorcontroller.board, if applicable.
--------------------------------------------------------------------------501 - Display1 Long,Video display1. Replace the video
Adapter Failure2 Shortcontroller.board if external one
used.
2. Replace the system
board.
--------------------------------------------------------------------------601 - DisketteNoneDiskette controller1. Make sure diskette
Controller Errorcircuitry.drive cable is
seated.
2. Replace the diskette
drive cable.
3. Replace the diskette
drive.
4. Replace the system
board.
--------------------------------------------------------------------------602 - DisketteNoneDiskette in drive A1. Replace the diskette.
Bootnot bootable.2. Replace the diskette
drive.
3. Replace the system
board.
--------------------------------------------------------------------------605 - Diskette2 ShortMismatch in driveRun Computer Setup.
Drive Errortype.
--------------------------------------------------------------------------610 - ExternalNoneSwitch 3 on theVerify switch 3 setting
storage devicevertical circuitand change if necessary.
failure.board is set for
an external drive
but no tape or
diskette drive is
installed in the
expansion base.
---------------------------------------------External storage1. Turn on external
device not poweredstorage device and
up.reboot computer.
--------------------------------------------------------------------------702 -NoneCoprocessor error.Replace the processor
Coprocessorboard.
Detection Error
--------------------------------------------------------------------------702A -2 ShortCoprocessor error.Replace the processor
Coprocessorboard.
Detection Error
--------------------------------------------------------------------------703 - CMOS2 ShortCoprocessor or1. Run the Configuration
Reports Aconfigurationutility.
Coprocessor Thaterror.2. Replace the processor
Has Not Beenboard.
Detected by
POST
--------------------------------------------------------------------------1125 - Internal2 ShortDefective internal1. Run Computer Setup
Serial Portserial port.and check it.
Failure2. Replace the system
board.
--------------------------------------------------------------------------1150 - COM PortTwo ports areRun Computer Setup.
Configurationconfigured in the
Errorsame address.
--------------------------------------------------------------------------1151 - COM Port2 ShortBoth external andRun Computer Setup.
1 Addressinternal serial
Assignmentports are assigned
Conflictto COM1.
--------------------------------------------------------------------------1152 - COM Port2 ShortBoth external andRun Computer Setup.
2 Addressinternal serial
Assignmentports are assigned
Conflictto COM2.
--------------------------------------------------------------------------1771 - Primary2 ShortInternal and1. Run Computer Setup.
Disk Portexternal hard drive2. Check expansion base
Addresscontrollers areswitch settings.
Assignmentboth assigned to3. Check unit out of
Conflictthe primaryexpansion base.
address.
===========================================================================
MessageBeepsProbable CauseRecommended Action
===========================================================================
1772 - Secondary2 ShortInternalRun Computer Setup.
Disk Portand external hard
Addressdrive controllers
Assignmentare both assigned
Conflictto the secondary
address.
--------------------------------------------------------------------------1780 - Disk 0NoneHard drive/format1. Run Computer Checkup.
Failureerror.2. Replace the drive.
--------------------------------------------------------------------------1781 - Disk 1NoneHard drive/format1. Run Computer Checkup.
Failureerror.2. Replace the drive.
--------------------------------------------------------------------------1782 - DiskNoneHard drive1. Run Computer Checkup.
Controllercircuitry error.2. Replace the drive.
--------------------------------------------------------------------------1790 - Disk 0NoneHard drive error or1. Run Computer Setup
Failurewrong drive type.and Computer Checkup.
2. Replace the drive.
--------------------------------------------------------------------------1791 - Disk 1NoneHard drive error or1. Run Computer Setup
Failurewrong drive type.and Computer Checkup.
2. Replace the drive.
--------------------------------------------------------------------------1792 - SecondaryNoneIncorrect C/DVerify position of
Disk Controllerswitch settings.C/D and configuration
Failureswitches in expansion
base and run Computer
Setup.
----------------------------------------------
Defective hard1. Reseat hard drive
drive or hard drivecable and replace
cable.if required.
2. Install a different drive.
----------------------------------------------
Defective systemIf the drive in the
board in expansionexpansion base is
base.designated as secondary,
replace the system
board in the expansion
base.
----------------------------------------------
Defective systemIf the drive in the
board in computer.computer is designated
as secondary, replace
the system board in the
computer.
--------------------------------------------------------------------------1793 - SecondaryNoneRefer to probableRefer to recommended
Disk Controllercauses for Erroractions for Error Code
or Disk FailureCode 1792.1792.
--------------------------------------------------------------------------(RESUME = F1NoneAs indicated toPress the F1 key.
KEY)continue.
===========================================================================
2.3 Computer Checkup (Test)
After POST runs successfully, run the latest version of Computer Checkup
(TEST). Computer Checkup determines if the computer assemblies and options
are recognized by the system and functioning properly. Run Computer Checkup
after installing or connecting a new assembly or option.
Computer Checkup is installed on the hard drive. If the hard drive is not
functioning, you can run it from the Compaq Diagnostics diskette by
inserting the diskette in Drive A before turning on the computer.
NOTE: It is recommended that you make a diskette copy of Compaq Diagnostics
and keep it available for future need. If necessary, a copy can be
obtained from the Compaq Customer Support Center.
Running Computer Checkup
To run Computer Checkup from the hard drive, complete the following steps:
1. Turn off the computer.
2. Turn on the computer.
3. Press F10 immediately after the computer beeps and the cursor moves to
the upper-right corner of the screen.
The Configuration and Diagnostics menu is displayed.
4. Select Computer Checkup (TEST) from the Configuration and Diagnostics
menu.
The Computer Checkup options menu is displayed.
5. Select View Device List.
A list of the installed hardware devices is displayed.
NOTE: Computer Checkup may not detect non-Compaq devices.
6. Verify that Computer Checkup correctly detected the installed devices.
If the list is correct, select OK. The Computer Checkup option menu is
displayed again.
If the list is incorrect, verify that the new devices are installed
properly.
7. Select one of the following from the Computer Checkup options menu:
o Quick Check Diagnostics - This option runs a quick, general test on
each device with a minimal number of prompts. If errors occur, they
are displayed when the testing is complete.
o Automatic Diagnostics - This option runs an unattended, maximum test
of each device with minimal prompts. You can choose how many times to
run the tests, to stop on errors, or to print or file a log of
errors.
o Prompted Diagnostics - This option allows maximum control over the
device testing process. You can choose attended or unattended
testing, decide to stop on errors, or choose to print or file a log
of errors.
8. Follow the instructions on the screen as the diagnostic tests are run
on the devices.
When the testing is complete, the Computer Checkup options menu is
displayed again.
9. Exit the test option menu.
10. Exit the Configuration and Diagnostics menu.
NOTE: Exiting the Configuration and Diagnostics menu restarts the
computer and saves your changes.
11. Look up in the "Computer Checkup Error Codes" tables any error codes
that were displayed, and take the recommended action.
12. Rerun POST and Computer Checkup, completing the recommended actions in
the order given until the problem is solved and no error messages
occur.
Computer Checkup (TEST) Error Codes
Computer Checkup (TEST) error codes occur if the system recognizes a
problem while running Computer Checkup. These error codes help identify
possible defective assemblies. Tables 2-2 through 2-13 list Computer
Checkup error codes, a description of the error condition, and the
recommended action for resolving the condition.
NOTE: The error codes in the following tables are listed in an AYY-XX
format, where:
A or AA = Number that represents the faulty assembly.
YY = Test or action that failed.
XX = Specific problem.
Table 2-2. Processor Computer Checkup Error Codes
===========================================================================
Error CodeDescriptionRecommended Action
===========================================================================
101 - xxCPU test failed.Replace the processor board.
114 - 01Speaker test failed.1. Check system configuration to
verify that speaker is enabled.
2. Check speaker volume level on
popup window.
3. Verify cable connections.
4. Replace power interface board.
5. Replace system board.
--------------------------------------------------------------------------116 - xxCache test failed.Replace the processor board.
===========================================================================
Table 2-13. Network Controller Computer Checkup Error Codes
===========================================================================
Error CodeDescriptionRecommended Action
===========================================================================
6000 - xxError occurred while1. Run the ISA setup utility,
attempting to identifyreconfigure the failing network
a particular networkcontroller, and retest.
interface controller.2. Ensure that the network
controller is seated properly,
if applicable.
3. Remove any cables attached to
the network controller(s) and
retest.
4. Ensure that any jumpers or DIP
switches on the controller
board are set to the correct
positions. (Refer to the
hardware documentation for more
information.)
5. If the network controller is a
stand-alone board, replace the
board.
6. If the network controller is
integrated into the expansion
base system board, replace the
expansion base system board.
7. If using multiple network
controller boards, attempt to
locate the defective board by
completing the following steps:
a. Remove all network
controller boards.
b. Install one network
controller board.
c. Retest with Computer
Checkup.
d. Keep adding the boards one
at a time and retesting
until the defective board is
located.
--------------------------------------------------------------------------6001 - xxNetwork card setupThe following steps apply to
failed.6001 - xx and 6002 - xx error
codes:
6002 - xxNetwork card transmit
failed.1. Check interrupt type and
number setting.
2. Check media connection at
controller and MAU *.
3. Check media speed (4/16) and
type (UTP/STP **) settings.
4. Check MAU, cabling, or other
network components.
5. Replace controller.
===========================================================================
Error CodeDescriptionRecommended Action
===========================================================================
6014 - xxEthernet configurationThe following steps apply to
test failed.6014 - xx and 6016 - xx error
codes:
6016 - xxEthernet reset test
failed.1. Run the ISA setup utility,
reconfigure the failing network
controller, and retest.
2. Ensure that the network
controller is seated properly,
if applicable.
3. Replace the network controller.
--------------------------------------------------------------------------6028 - xxEthernet internalThe following steps apply to
loopback test failed.6028 - xx and 6029 - xx error
codes:
6029 - xxEthernet external
loopback test failed.1. If using external loopback
plug(s), check that the correct
type of loopback plug is being
used.
2. If using external loopback
plugs, check that loopback plug
is connected to the correct
media connector at the rear of
the computer.
3. If using a live network for
this test, ensure that the
network, concentrators, and
cables are functional.
4. Run the ISA setup utility,
reconfigure the failing network
controller, and retest.
5. Ensure that any jumpers or DIP
switches on the controller
board are set to the correct
positions. (Refer to the
hardware documentation for
more information.)
6. If the network controller is a
stand-alone board, replace the
board.
7. If the network controller is
integrated into the expansion
base system board, replace the
expansion base system board.
8. If using multiple network
controller boards, attempt to
locate the defective board by
completing the following steps:
a. Remove all network
controller boards.
b. Install one network
controller board.
c. Retest with Computer
Checkup.
d. Keep adding boards and
retesting (repeating steps
b and c) until the defective
board is located.
===========================================================================
Error CodeDescriptionRecommended Action
===========================================================================
6054 - xxToken RingThe following steps apply to
configuration test6054 - xx and 6056 - xx error
failed.codes:
6056 - xxToken Ring reset test
failed.1. Run the ISA setup utility,
reconfigure the failing network
controller, and retest.
2. Ensure that the network
controller is seated properly,
if applicable.
3. Replace the network controller.
--------------------------------------------------------------------------6068 - xxToken Ring internalRefer to recommended actions for
loopback test failed.Error Code 6028 - xx.
--------------------------------------------------------------------------6069 - xxToken Ring externalRefer to recommended actions for
loopback test failed.Error Code 6029 - xx.
--------------------------------------------------------------------------6089 - xxToken Ring open.Refer to recommended actions for
Error Code 6029 - xx.
--------------------------------------------------------------------------* MAU = Multi-station Access Unit
The SCSI Computer Checkup error codes and messages in Table 2-14 are
divided into three parts:
o Table 2-14A (SCSI Device Names)
o Table 2-14B (SCSI Test Names)
o Table 2-14C (SCSI Test Error Codes)
SCSI error messages contain six digits and begin with the two-digit number
65, 66, or 67, which indicates the drive type being tested (Table 2-14A).
The second two-digit number indicates the type of operation being tested on
the drive (Table 2-14B). The last two-digit number indicates the specific
error (Table 2-14C).
For example, with error code 6523-05, the first two-digit number of the
error code (65) indicates a disk problem (Table 2-14A). The second
two-digit number (23) indicates a random read (Table 2-14B). The last
two-digit number (05) indicates a seek failure (Table 2-14C). Thus, in this
example, the diagnostics program tested the random read functioning of the
hard drive and received a seek failure. The drive is faulty and must be
replaced.
NOTE: Refer to Chapter 7 for SCSI troubleshooting information.
This section contains troubleshooting tables that provide a quick reference
for diagnosing problems that cannot be identified by running POST or
Computer Checkup (such as a non-functional display that does not allow
viewing error messages). These tables address problems with:
o Battery
o Battery gauge
o Diskette/diskette drive
o Display
o External device installation
o Hard drive
o Keyboard/numeric keypad
o Memory
o PCMCIA
o Power
o Printer
o Software applications
o Sound
o Standby
o System start
o Trackball/mouse
Since symptoms can appear to be similar, carefully match the symptoms of
the computer malfunction against the problem description in the
troubleshooting tables to avoid a misdiagnosis.
To avoid a potential shock hazard during troubleshooting procedures,
disconnect all power sources before removing the keyboard cover or the
display bezel.
When troubleshooting a problem, check the following list for possible
solutions before replacing parts:
o Verify that cables are connected properly to the suspected defective
parts. Try reseating the cables even if they appear to be properly
connected.
o Run Computer Setup after connecting external devices.
o Verify that all required device drivers are installed.
o Verify that all required changes have been made to the CONFIG.SYS file.
o Verify that all required changes have been made to the AUTOEXEC.BAT file.
o Verify that printer drivers have been installed for each application.
Table 2-16. Battery Problems *
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Battery LEDLow battery beeps wereUse Power Management to turn
flashes toturned off.on the low battery warning
indicate lowbeeps (Section 1.10).
battery
condition, but
computer
does not beep.
------------------------------------------------------Volume is turned downPress the Fn + F5 keys, and
too low.press the right arrow key to
increase the volume. Use the
down arrow key to test the
volume.
--------------------------------------------------------------------------Battery LED doesBattery pack is alreadyNo action is necessary.
not come on andcharged.
the battery gauge
does not reflect
a change in
battery charge
level.
------------------------------------------------------Battery pack is trickleAllow battery pack to
charging.continue charging for 30
minutes and recheck the
battery gauge.
------------------------------------------------------Battery pack was exposedAllow time for the battery
to temperature extremes.pack to return to room
temperature.
------------------------------------------------------Battery pack is at endInstall another battery
of its life.pack. If this fixes the
problem, original battery
is no longer functional.
------------------------------------------------------Battery contacts notRemove the keyboard cover
making good contact withand examine the battery
battery pack.contacts. Ensure that the
battery pack is making good
contact with all five sets
of contacts. If not, gently
bend the contacts on the
system board so that the
battery pack makes good
contact.
Defective system board.Replace system board.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Computer shutBattery pack was notNext time, initiate Standby,
down and datareplaced within onewait until the power/standby
was lost whenminute when thelight is flashing, and
replacing thecomputer was in Standby.remove the battery pack.
battery pack.Insert a charged battery
---------------------------Replace the auxiliary
battery.
--------------------------------------------------------------------------Every time theAuxiliary battery chargeRecharge the auxiliary
computer isis low or the auxiliarybattery. **
turned on, datebattery is at end of its
and time must belife.
set.----------------------------
Replace the auxiliary
battery.
--------------------------------------------------------------------------Battery chargeBattery is being exposedKeep computer at a cooler
does not last asto hightemperature and recharge the
long as expected.temperatures. ***battery.
--------------------------------------------------------------------------Battery pack isNormal warming hasNo action is required.
warm to the touchoccurred due to
after charging.charging.
Table 2-17. Battery Gauge Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Battery gaugeIf battery pack is new,Fully charge the battery
displays aquestion mark ispack until the battery LED
question mark.displayed until batteryturns off. If problem
pack is fully charged.still exists, complete the
following steps:
1. Allow the battery pack to
cool off.
2. Partially discharge the
battery pack.
3. Fully recharge the
battery pack.
------------------------------------------------------The battery pack hasFully charge the battery
been unused for five orpack until the battery LED
more days.turns off.
------------------------------------------------------Battery pack has beenCondition the battery pack *
partially recharged too(Appendix B).
many times without being
fully recharged.
--------------------------------------------------------------------------Battery gaugeBattery pack has beenCondition the battery pack *
appearspartially recharged too(Appendix B).
inaccurate.many times or computer
has been in Standby for
an extended period of
time.
--------------------------------------------------------------------------* The battery pack needs to be conditioned every 60 days to maintain
Table 2-18. Diskette/Diskette Drive Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Diskette driveDiskette is damaged.Run CHKDSK on the diskette.
LED stays on.At the system prompt, type:
CHKDSK A:
------------------------------------------------------Software program isCheck the program diskettes.
damaged.
--------------------------------------------------------------------------Diskette driveDiskette is write-Disable the diskette's
cannot write to aprotected.write-protect feature or use
diskette.a diskette that is not
write-protected.
------------------------------------------------------Computer is writing toCheck the drive letter in
the wrong drive.the path statement.
------------------------------------------------------Diskette is notFormat the diskette.
formatted.
--------------------------------------------------------------------------Diskette driveThe wrong type ofUse the type of diskette
cannot read adiskette is being used.required by the drive.
diskette.
------------------------------------------------------Diskette has a badCopy files to the hard drive
sector.or another diskette.
Table 2-19. Display Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Characters areControl slide forAdjust the slide control(s)
dim.brightness or contraston the right side of the
(if applicable) is notdisplay. *
set properly.
------------------------------------------------------Computer screen is inTilt display or move
direct light.computer.
------------------------------------------------------Power Management settingUse the Fn + F7 hotkeys or
is set on high orrun Power Management to
custom.change setting to medium.
------------------------------------------------------Power ManagementAdjust brightness setting in
brightness setting isPower Management.
incorrect.
--------------------------------------------------------------------------Screen is blank.QuickBlank is initiated.Enter password to exit
QuickBlank.
------------------------------------------------------Another screen blankingPress any key and/or enter
utility may bepassword.
installed.
------------------------------------------------------Screen save wasPress any key or click the
initiated by Powermouse.
Management due to lack
of user activity.
------------------------------------------------------If a color STN is used,Adjust the slide controls on
brightness/contrastthe right side of the
control slide needsdisplay for
adjusting.brightness/contrast. *
------------------------------------------------------Display (lid) switch isTap the switch.
stuck.
------------------------------------------------------Display has overheated.If computer is in direct
sunlight, move it and allow
it to cool off.
--------------------------------------------------------------------------Display is blankSystem is in Standby.Press the standby button to
and theexit Standby.
power/standby LED
is flashing.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Screen is blank,System has entered aIf available, immediately
the power/standbylow battery Standbyconnect the computer to an
LED is flashing,condition. The computerexternal power source or
and the batterywill next activateinsert a charged battery
LED is flashing.Hibernation, if thispack. Then press the standby
feature is not disabled.button to exit Standby.
If another power source is
not immediately available
and Hibernation is disabled,
attempt to exit Standby and
save any open files.
However, the computer may
not have enough power to do
this.
If you have not disabled
Hibernation, the computer
automatically hibernates.
Do not interfere with the
computer while it is
entering Hibernation.
Once the computer has
turned off, insert a charged
battery pack, or connect the
computer to another power
source. Then turn the
computer back on.
--------------------------------------------------------------------------Internal displayDisplay function wasPress the Fn + F4 keys to
is blank and theswitched to the externalactivate the internal
screen on anmonitor.display. Press the keys
external monitoragain to display information
displayssimultaneously. **
information.
--------------------------------------------------------------------------Distorted orThe ANSI.SYS driver isAdd the ANSI.SYS driver to
garblednot in the CONFIG.SYSthe CONFIG.SYS file. Add the
characters on thefile or the path isfollowing line:
display are mixedincorrect.
with text.DEVICE=C:\ANSI.SYS
------------------------------------------------------An Energy Star monitorDeselect Energy Star monitor
is selected when one isin Power Management.
not connected.
--------------------------------------------------------------------------Internal displayUsing 800 X 600 orRestart the computer. If
flashes or hashigher resolutionsimultaneous display is
garbledon external monitor anddesired, use 640 x 480
characters whenhave toggled back toresolution. **
computer isinternal display, which
connected toonly supports 640 X 480
external monitor.resolution.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Internal displayExternal monitor wasTurn the computer off and
and externalconnected after theconnect the external
monitor do notcomputer was turned on.monitor. Turn the external
displaymonitor on, then turn on the
informationcomputer.
simultaneously.
**Press the Fn + F4 keys to
"toggle" through the three
display possibilities.
--------------------------------------------------------------------------The light tubesImproper backlight or1. Reseat the display cable
on the edge ofdisplay cableto the system board.
the display panelconnections.2. Reseat the display cable
do not light upto the inverter board.
at all and Power-3. Reseat the backlight
On-Self-Testcable to the inverter
(POST) completesboard.
when the unit
is powered up.
***
------------------------------------------------------Defective inverterReplace the inverter board.
board.****
------------------------------------------------------Defective display cable.Replace the display cable.
****
------------------------------------------------------Defective display panel.Replace the display panel.
****
------------------------------------------------------Defective system board.Replace the system board.
--------------------------------------------------------------------------The light tubesDisplay switch is stuckRemove keyboard cover and
on the edge ofin the off position.inspect the display switch.
the display panelReplace the following one
light upat a time until switch has
momentarily whenproper movement:
unit is powered1. Display switch spring.
up, but turn off2. Keyboard cover.
during or after
POST. Power LED
lights up on
front of unit but
not on top. ***
--------------------------------------------------------------------------The light tubesDefective system board.Replace the system board.
on the edge of
the display panel
do not light up
at all and
Power-On
Self-Test (POST)
does not complete
when the unit is
powered up. ***
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
BacklightPower ManagementVerify that you have not
(brightness)settings are set high,selected a Power Management
cannot becausing a dim display.setting that limits the
adjusted with theoutput of the backlight.
brightness
control slide.
*****
------------------------------------------------------Control slide is seatedRemove the control slide
improperly.from the display bezel and
reseat it.
------------------------------------------------------Improper display cable1. Reseat the display cable
connections.to the inverter board.
2. Reseat the display cable
to the system board.
------------------------------------------------------Defective inverterReplace the inverter board.
board.****
------------------------------------------------------Defective display cable.Replace the display cable.
****
------------------------------------------------------Defective system board.Replace the system board.
****
--------------------------------------------------------------------------Contrast cannotControl slide improperlyRemove the plastic control
be adjusted withseated.slide from the display bezel
the contrastand reseat it.
control slide
(color STN models
only). *
Improper display cableReseat the display cable to
connections.the following one at a time
until the problem is solved:
1. Inverter board.
2. System board.
3. Display panel.
------------------------------------------------------Defective inverterReplace the inverter board.
board.****
------------------------------------------------------Defective display cable.Replace the display cable.
****
------------------------------------------------------Defective display panel.Replace the display panel.
****
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
The display panelImproper display cableReseat the display cable to
has a continuousconnections.the following until the
pattern across itproblem is solved:
(e.g., a
"jailbars"1. System board
pattern), has a2. Display board
single color on3. Inverter board
it, or has
garbled graphics
across the entire
panel. This
failure is for
patterns across
the entire panel
(not just on one
section).
------------------------------------------------------Defective display cable.Replace the display cable.
****
------------------------------------------------------Defective inverterReplace the inverter board
board.(on color STN models only).
------------------------------------------------------Defective system board.Replace the system board.
--------------------------------------------------------------------------A single line,Defective display panel.Replace the display panel.
small group of****
lines, or block
appears on the
display panel.
This failure
occurs in only a
section of the
display panel.
******
--------------------------------------------------------------------------The displayDefective display switchRemove keyboard cover. Push
switch does notspring or keyboardthe display switch on the
function.cover.power interface board. If
(Section 1.4)display switch functions,
install the following new
parts one at a time until
the problem is solved:
1. Display switch spring.
2. Keyboard cover.
------------------------------------------------------Defective powerReplace power interface
interface board.board.
------------------------------------------------------Defective system board.Replace system board.
* On the color STN models, brightness is adjusted with the control
slide on the right, and contrast is adjusted with the control slide
on the left.
** When using an external monitor and simultaneously displaying an
image on the internal display, the image on the external monitor may
not fill the screen.
*** This problem indicates that the backlight or its power circuitry has
failed. Since you cannot observe the POST results on the display
panel when the backlight is not functioning, connect the unit to an
external monitor before powering the unit up. If an external monitor
is not available, verify that POST completes by opening and closing
the display, listening for the single or double beep, and watching
for the LEDs to turn on at the front of the computer.
**** The spare display panel, inverter board, display cable, and display
enclosure for the 9.5" color TFT models come preinstalled in a
display assembly. To replace these parts on the 9.5-inch color TFT
models, replace the entire display assembly.
***** The brightness adjustment function on TFT panels must be tested with
the display bezel on, since these panels contain a light feedback
circuit.Outside light affects the operation of the circuit and
does not allow the brightness to adjust.
****** Blocks usually appear in an even fraction of the display (1/2, 1/4,
NOTE: To perform a "self-test" on an external VGA color or monochrome
monitor, complete the following steps:
1. Turn off the monitor.
2. Turn off the computer.
3. Disconnect the monitor signal cable from the computer.
4. Turn on the monitor and allow it to warm up for one minute.
The screen should be white. A narrow black border may also appear on the
left and right sides of the display.Either of these displays indicates
that the monitor is working properly.
ProblemProbable CauseSolution(s)
===========================================================================
A new device isComputer Setup has notRun Computer Setup.
not recognized asbeen run to configure
part of thethe new device.
computer system.
------------------------------------------------------Cable(s) of new externalEnsure that all cables are
device are loose orproperly and securely
power cables areconnected.
unplugged.
------------------------------------------------------Power switch of newTurn off the computer, turn
external device was noton the external device, then
turned on when theturn on the computer to
computer was powered up.integrate the device with
the computer system.
------------------------------------------------------Device is not seatedTurn off the computer and
properly.reinsert the device.
Table 2-21. Hard Drive Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Reading hardSystem enteredGive the system time to
drive takes anHibernation due to lowrestore the previously
unusually longbattery condition andsaved data to its exact
time afteris now exiting from it.state before Hibernation.
restarting the
computer.
--------------------------------------------------------------------------Hard drive errorHard drive has badRun Computer Checkup.
occurs.sectors or has failed.
--------------------------------------------------------------------------Hard drive doesHard drive is not seatedTurn off and unplug the
not work.properly.computer, remove the battery
pack, and remove and then
reinsert the hard drive.
------------------------------------------------------Hard drive was removedTurn off computer then turn
and replaced whileit on again. Before removing
computer was on, inthe hard drive, make sure
Standby, or incomputer is off, unplugged,
Hibernation.and the battery pack is
removed.
--------------------------------------------------------------------------Hard drive cannotHard drive securityRemove hard drive security
be removed.clips are installed.clips (Section 4.12)
===========================================================================
Table 2-22. Keyboard/Numeric Keypad Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Keyboard isQuickLock is initiated.Enter password to exit
locked.QuickLock.
--------------------------------------------------------------------------Embedded numericNum Lock function is notPress the Fn + End keys to
keypad onturned on.enable the Num Lock function
computer keyboardand embedded numeric keypad.
is disabled.
--------------------------------------------------------------------------Embedded numericExternal numeric keypadDisconnect the external
keypad isis connected to thenumeric keypad from the
disabled and Numcomputer.computer.
Lock function is
on.
--------------------------------------------------------------------------External keyboardExternal keyboard is notEnsure that the external
does not work.securely connected or iskeyboard is securely
connected to anconnected to the appropriate
incorrect externalexternal connector.
connector.
Table 2-23. Memory Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Memory countOptional memory card is1. Ensure that the
during Power-Oninstalled incorrectly,appropriate memory card
Self-Test (POST)is incompatible withhas been installed
is incorrect.the computer, or iscorrectly.
configured incorrectly.2. Run Computer Setup.
--------------------------------------------------------------------------"Out of Memory"Too many TSRs * areDelete any TSR applications
message isinstalled.that are not needed.
displayed on the
screen, or
insufficient
memory error
occurs during
operation.
------------------------------------------------------Memory configuration isReconfigure the memory using
not set up correctly.MS-DOS MEMMAKER.
------------------------------------------------------System ran out of memory1. Check the application
for the application.documentation for memory
requirements.
2. Install additional
memory.
--------------------------------------------------------------------------* TSRs (Terminate Stay Resident) are software routines that stay in RAM
This section contains guidelines for troubleshooting common Ethernet
network problems. These guidelines are intended for use when you have
determined that the computer in the Compaq SmartStation is not
communicating with the network. These guidelines do not discuss the process
of troubleshooting the network cable.
The following are common problems to check first:
o Ensure that the network cable is securely attached to the expansion base.
A loose cable is the most common cause of network problems. If the cable
is loose, secure it and see if the computer communicates with the
network.
o Ensure that the I/O address and interrupt level do not conflict with
another option.
o Determine whether another computer other than the computer currently in
use has communicated with the network from the expansion base. If so,
determine whether anything was added or changed that could have stopped
the network interface from working.
o Run Computer Checkup (TEST) to test the network interface and determine
if a problem is being caused by a controller or by a cable. Computer
Checkup can be run before installing the network drivers to verify that
the network interface is working correctly.
IMPORTANT: For the Compaq LTE Lite Family of Personal Computers, use the
diagnostics diskette included with the SmartStation Adapter
to run Computer Checkup.
Network Adapter Patch
A file from the Network Install diskette must be installed when using the
Compaq LTE Elite with certain network adapters while in certain operating
environments. The Network Install diskette is included with the Compaq
SmartStation and the Compaq LTE Lite Desktop Expansion Base Upgrade Kit.
The README.DOC file on the diskette details how to use each file and
specifies the network interface cards and network operating systems that
require it.
NOTE: Files on the diskette are not needed to use the Compaq LTE Lite with
a network adapter or the Compaq LTE Elite with the built-in Ethernet
controller in the Compaq SmartStation.
Refer to the correct version of Service Advisory 737 for a comprehensive
list of network adapters that require a patch, which include the following:
o Eagle Etherxpert EP2000 Plus
o Madge AT Ringnode
o Madge ISA Ringnode
o Madge Smart AT Ringnode
o Madge Smart 16/4 AT Ringnode
o Novell NE-2000
o Standard Microsystems Corp. Arcnet PC 130
o Standard Microsystems Corp. Arcnet PC 130E
o Tiara Lancard/A
o Silicom Modular Pocket Ethernet Adapter
o Xircom Pocket Arcnet Adapter
NOTE: Contact Xircom to request a software driver for the Xircom Pocket
Ethernet Adapter III.
Table 2-24. Network Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Computer SetupThe computer is notDock the computer in the
does not detectdocked in the expansionexpansion base to use the
the networkbase.network interface.
interface.-------------------------------------------------------
There is a conflictRun Computer Setup and
between the networkreconfigure the network
interface and aninterface or the conflicting
optional devicedevice.
installed on the
computer or the
expansion base.
--------------------------------------------------------------------------Computer CheckupThere is a conflictRun Computer Setup and
(TEST) detects abetween the networkreconfigure the network
failure.interface and aninterface or the conflicting
optional devicedevice.
installed on the
computer or the
expansion base.
------------------------------------------------------The cable is notEnsure that the cable is
securely connected tosecurely connected to the
the proper networkproper network connector
connector on theon the expansion base.
expansion base.
------------------------------------------------------There is a problem withEnsure that the cable and
the cable or a device atdevice at the other end of
the other end of thethe network connection are
cable.operating properly.
------------------------------------------------------There is a hardwareReplace the expansion base
failure in the expansionsystem board.
base.
--------------------------------------------------------------------------Computer CheckupThe network drivers areEnsure that the network
(TEST) reports nonot loaded.drivers are on the hard
errors, but thedrive, the path is correct
computer does notin AUTOEXEC.BAT, and the
communicate withdriver is loaded in
the network.CONFIG.SYS.
------------------------------------------------------There is a conflictRun Computer Setup and
between the networkreconfigure the network
interface and aninterface or the conflicting
optional devicedevice.
installed on the
computer or the
expansion base.
--------------------------------------------------------------------------The computerThe cable is notEnsure that the cable is
stoppedsecurely connected tosecurely connected to the
communicatingthe proper networkproper network connector.
with the networkconnector on the
without apparentexpansion base.
cause.-------------------------------------------------------
There is a problem withEnsure that the cable and
the cable or a device atdevice at the other end of
the other end of thethe network connection are
cable.operating properly.
------------------------------------------------------There is a generalEnsure that the network you
network failure.are connected to is running
and has not experienced any
errors or problems that
would prevent connection.
------------------------------------------------------The files for theReinstall the network
network drivers havedrivers.
been corrupted.
--------------------------------------------------------------------------When using theA software patch isInstall the software patch.
Compaq LTE Elite,required.(Refer to "Network Adapter
the networkPatch" in this section.)
adapter drivers
cannot be loaded,
the network
application has
slow performance,
or the network
application loses
the network
connection.
===========================================================================
Table 2-25. PCMCIA Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
When turned on,Card is not insertedRemove and reinsert the card
the computer doesproperly.in the correct orientation.
not beep when a
PCMCIA card is
inserted.
------------------------------------------------------PCMCIA beeps areFrom MS-DOS: Run the PCCARD
disabled.utility to reenable PCMCIA
beeps.
From Windows: Select
Computer Setup from the
Compaq Control Center and
select the PCMCIA option to
reenable PCMCIA beeps.
------------------------------------------------------Speaker volume is turnedPress the Fn + F5 keys, and
down.press the right arrow key to
increase the volume. Use the
down arrow key to test the
volume.
------------------------------------------------------PCMCIA drivers are notSelect Computer Setup from
loaded.the Compaq Control Center
and select the PCMCIA option
to enable the PCMCIA
drivers.
Management from the
Configuration and
Diagnostics menu to enable
the PCMCIA slot.
From Windows environment:
Select Security Management
from the Compaq Control
Center to enable the PCMCIA
slot.
------------------------------------------------------Card or card driver isContact Compaq Reseller
not PCMCIA compliant.Support for a list of PCMCIA
cards tested successfully in
Compaq PCMCIA platforms.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
The PCMCIAThe PCMCIA slot isFrom non-Windows
drivers (Socketdisabled.environment: Select Security
Services, CardManagement from the
Services, CardConfiguration and
ID) fail withDiagnostics menu to enable
error messagesthe PCMCIA slot.
when the computer
is turned on.From Windows environment:
Select Security Management
from the Compaq Control
Center to enable the PCMCIA
slot.
--------------------------------------------------------------------------PCMCIA modem orWrong COM port beingFrom MS-DOS: Run CARDINFO to
fax card does notused to access the card.determine which COM port is
work.assigned to the card.
From Windows: Select
Computer Setup from the
Compaq Control Center to
determine which COM port is
assigned to the card.
------------------------------------------------------The card conflicts withFrom MS-DOS: Run PCCARD to
the system board serialselect a different COM port
device.for the PCMCIA card.
From Windows: Select
Computer Setup from the
Compaq Control Center, then
select the PCMCIA option and
choose a different COM port
for the PCMCIA card.
------------------------------------------------------The card is not PCMCIAContact Compaq Reseller
compliant.Support for a list of PCMCIA
PCMCIA networkNetwork driver is notSelect Computer Setup from
card does notset up properly.the Compaq Control Center
work.and select the PCMCIA
option; then view the online
help for detailed
instructions on setting up
PCMCIA network cards.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Storage card doesSRAM and flash memorySelect Computer Setup from
not work.cards require the memorythe Compaq Control Center;
card driver to bethen select the PCMCIA
loaded.option to enable the memory
card driver.
------------------------------------------------------Flash memory cardsSelect Computer Setup from
require the Microsoftthe Compaq Control Center;
FlashFile System to bethen select the PCMCIA
loaded.option to enable the flash
file system.
------------------------------------------------------Hard disks on flash massSelect Computer Setup from
storage cards requirethe Compaq Control Center;
the PCMCIA ATA driver tothen select the PCMCIA
be loaded.option to enable the PCMCIA
ATA driver.
------------------------------------------------------You are trying to accessFrom MS-DOS: Run CARDINFO to
the card using the wrongdetermine which drive letter
drive letter.is assigned to the card.
From Windows: Select
Computer Setup from the
Compaq Control Center to see
which drive letter is
assigned to the card.
------------------------------------------------------The card is notFrom MS-DOS: For memory
formatted.cards, run MEMCARD to format
the card. For hard drive
cards and flash mass storage
cards, run ATACARD, then run
FORMAT.
From Windows: Select
Computer Setup from the
Compaq Control Center, then
select MEMCARD or ATACARD
from the PCMCIA option.
------------------------------------------------------The card is notContact Compaq Reseller
supported.Support for a list of PCMCIA
Table 2-26. Power Problems *
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Computer isComputer has entered aImmediately save any open
beeping andlow battery condition.file(s). Then do any one of
battery LED isthe following:
flashing.
o Connect the computer to an
external power source,
then charge the battery
pack.
o Replace the battery pack
with a fully charged
battery pack.
o Initiate Hibernation
(press the Fn key and
standby button
simultaneously) to
completely halt the power
consumption on the
battery pack, or initiate
Standby to reduce power
consumption until the
battery pack can be
recharged or another power
source can be connected.
--------------------------------------------------------------------------Computer turnedThe unit temperature wasComputer is in an
off.exceeded. **exceedingly hot environment.
Let the computer cool down.
------------------------------------------------------Fan may be blocked,Make sure airflow at rear
causing temperature toand sides of computer is not
exceed limits. **obstructed.
--------------------------------------------------------------------------Computer turnedSystem initiatedTurn on the computer.
off while leftHibernation according to
unattended. PowerPower Management
LED is off.settings.
------------------------------------------------------System initiatedInstall a fully charged
Hibernation due to abattery pack or connect the
low battery condition.computer to an external
power source, then turn on
the computer.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Unit powers upBattery not charged.Charge the battery fully.
from AC power but
not from the
battery.
------------------------------------------------------Defective battery.Install another battery.
------------------------------------------------------Battery contacts notRemove the keyboard cover
making good contact withand examine the battery
battery.contacts. Ensure that the
battery is making good
contact with all five sets
of contacts.
------------------------------------------------------Defective system board.Replace system board.
--------------------------------------------------------------------------Unit powers upFaulty AC power cord.Try another power cord.
from the battery
pack, but not
from AC power.
------------------------------------------------------Faulty cable connectionCheck the cable connection
from internal powerfrom the internal AC power
supply.supply to the system board.
------------------------------------------------------Defective internal ACReplace the internal AC
power supply.power supply.
--------------------------------------------------------------------------The computer hasPower switch notDetermine if the power
no power at allfunctioning.switch is functioning by
when the powerremoving the battery and
switch isdisconnecting the AC power
activated.cord from the unit. Next,
The display isplug in the AC power cord.
not on. The hardIf the unit powers up, the
drive does notpower switch is not
spin up. All LEDsfunctioning. Check the
(except thefollowing:
battery LED) are
off.1. Remove keyboard cover
and verify that the
If the other LEDspower switch (small
come for anybutton on power
period of timeinterface board) moves
(even for afreely. If it binds or is
momentary flash),damaged, replace the
this is not akeyboard cover.
"no power"
problem.2. Try to operate the power
switch with the keyboard
cover removed. If the
unit will not power up or
down, replace the power
interface board. If the
unit functions
correctly, install a new
keyboard cover.
Defective system board.Replace system board.
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
The computer hasShort circuit on one of1. Remove the following
a crowbarthe power supplyparts one at a time until
condition: itoutputs.the short circuit is
powers up for alocated:
short period,
then shuts off.NOTE: After verifying
LEDs flash on,that a part is not the
then off. (Thiscause of the short
takes place incircuit, reinstall it
less than threebefore removing the next
seconds.)part.
In addition, note that
the first three parts can
be checked by the user.
a. PCMCIA card
b. Battery pack
c. Hard drive
d. Diskette drive
e. Internal AC power
supply
2. Disconnect the display
cable from the system
board and power the unit
up. If the unit powers
up, the display cable or
display assembly has
failed. Plug the display
cable back into the
system board and attempt
to find the defective
part in the display
assembly by completing
the following steps one
at a time until the short
circuit is located:
a. Disconnect the display
cable from the
inverter board and
attempt to power the
unit up. If the unit
powers up, replace the
inverter board.
b. Disconnect the display
cable from the
trackball board and
power the unit up. If
the unit powers up,
replace the trackball
board.
c. Disconnect the display
cable from the display
panel and power the
unit up. If the unit
powers up, replace the
display panel.
d. Replace the display
cable.
3. Replace the system board.
--------------------------------------------------------------------------* For information on solving battery problems, refer to Table 2-16.
** The fan turns on and off automatically when the computer reaches certain
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Printer does notThe device drivers forInstall the correct printer
print.the application are notdrivers for the application
installed.in the CONFIG.SYS file.
------------------------------------------------------Printer that is set upConnect the printer to the
for a network is notnetwork.
connected to the
network.
------------------------------------------------------Printer cable is tooReplace the cable.
long, unshielded, or
defective.
Table 2-28. Software Application Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Cannot use anThe application has not1. Add or edit the
application.been added to the PATHapplication entry in the
statement.AUTOEXEC.BAT file.
2. Run the program with the
full path name.
--------------------------------------------------------------------------Application failsA conflict existsClose all applications
or does not workbetween applications.being used.
properly.
--------------------------------------------------------------------------InsufficientToo many TSRs * areDelete any TSR applications
memory to runinstalled.that are not needed.
application.
------------------------------------------------------Application requiresExit Windows and enter
Windows to be run inagain using the following
enhanced mode.command to run in enhanced
Table 2-29. Sound Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Computer does notSpeaker volume has beenPress the Fn + F5 keys, and
beep after theturned down.and press the right arrow
Power-Onkey to increase the volume.
Self-Test (POST).Use the down arrow key to
test the volume.
--------------------------------------------------------------------------Beeps have been turnedTurn on beeps in Power
off.Management utility
Table 2-30. Standby Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
The standbyDefective keyboardRemove the keyboard cover.
button iscover.Press the Standby button
pressed, but thelocated on the power
unit does not gointerface board. If problem
into standby.is solved, install a new
keyboard cover.
------------------------------------------------------Defective powerReplace the power interface
interface board.board.
------------------------------------------------------Defective system board.Replace the system board.
Table 2-31. System Booting Problems
===========================================================================
ProblemProbable CauseSolution(s)
===========================================================================
Computer powersBad contacts betweenRemove processor board and
up, power/standbyprocessor board andclean connectors on
LED is on, butsystem board.processor board and system
computer does notboard with isopropyl
begin POST.alcohol.
Table 2-32. Trackball/Mouse Problems
===========================================================================
ProblemCauseSolution(s)
===========================================================================
Trackball orIncorrect or no deviceInstall the device driver
mouse does notdriver is installed.and add to the AUTOEXEC.BAT
work.file or CONFIG.SYS file.
------------------------------------------------------The device driver is notInstall the Compaq mouse
installed in Windows.driver in Windows.
InternalAn external pointingDisconnect the external
trackball doesdevice is connected topointing device and restart
not work.the computer and thethe computer.
Trackball orMouse device driver isEnter MOUSE at the system
mouse does notnot activated (loadedprompt to activate the mouse
work even thoughinto memory) in MS-DOS.device driver.
the device driver
is in the PATH
command of the
AUTOEXEC.BAT
file.
--------------------------Add a line in the
AUTOEXEC.BAT file to
automatically activate the
mouse device driver each
time the computer is turned
on or restarted.
------------------------------------------------------Display cable notReseat cable.
properly seated in
trackball board.
------------------------------------------------------Defective system board.Replace system board.
------------------------------------------------------Mouse device driver isFrom Windows, run Computer
not correctly installedSetup and select the select
in Windows.the proper mouse driver.
Cursor skips orThe ball, rollers, orClean the ball in the
moves abnormallytracking post in thetrackball or mouse
when using atrackball or mouse need(Appendix G).
trackball orcleaning.
mouse.
------------------------------------------------------Bottom of trackballPlace capton tape on bottom
board is shorting toof trackball board.
display shield.
------------------------------------------------------Display cable notReseat cable.
properly seated in
trackball board.
------------------------------------------------------Display cable is torn,Replace display cable.
causing intermittent
open circuit.
Obtain the following information before contacting Compaq Reseller Support:
o Product name
o Product serial number (Section 1.1)
o Purchase date
o Conditions under which the problem occurred
o Any error messages that have occurred
o Hardware configuration
o Type of printer connected
o Hardware/software being used
o Printed results of Computer Checkup (TEST) and View System Information
(INSPECT), if possible
o Printed copies of CONFIG.SYS and AUTOEXEC.BAT files, if possible
Shipping Preparation
To ship the computer, complete the following steps:
1. Back up the critical hard drive files. Ensure that backup
tapes/diskettes are not exposed to electrical or magnetic fields while
stored or in transit.
2. Turn off the computer and external devices.
3. Disconnect the external devices from their power sources, then from the
computer.
IMPORTANT: Ensure that there is no diskette in the diskette drive and
that there are no PCMCIA cards in the PCMCIA slot.
4. Close the display and all exterior doors (external options, PCMCIA
compartment, memory, and hard drive).
5. Pack the computer with sufficient packing material to protect it. Use
the original packing box or similar packaging.
Chapter 3 - Compaq LTE Elite Illustrated Parts Catalog
Introduction
This chapter provides illustrated parts breakdowns and identifies the spare
parts for the Compaq LTE Elite Family of Personal Computers, including the
Compaq MiniStation/EN and the Compaq MiniStation/TR.
Refer to Chapter 8 for spare part information for the Compaq SmartStation.
3.1 System Unit Enclosures
Table 3-1. System Unit Enclosures
===========================================================================
DescriptionSpare Part Number
===========================================================================
Table 3-2. Boards
===========================================================================
DescriptionSpare Part Number
===========================================================================
cable, and display enclosure for the 9.5" color TFT display come
preinstalled in a display assembly to ensure compatibility and optimize
the display quality.
*** The ground cable used on the 9.5" black-and-white TFT and the 9.5"
color STN displays may be 2 inches shorter than the one used in the
other models. In addition, the shorter ground cable may not have a
ground clip inside the display enclosure.
Common Display Parts
===========================================================================
DescriptionSpare Part Number
===========================================================================
**** The Compaq display logos are also included with the display
enclosure.
***** Not Shown.
===========================================================================
IMPORTANT: Each display type must use the exact panel, cable, inverter
board, and bezel that are listed above to ensure proper
performance.
3.4 Mass Storage Devices
Table 3-4. Mass Storage Devices
===========================================================================
DescriptionSpare Part Number
===========================================================================
1. 3.5-inch, 1.44 MB Diskette Drive149749-001
2. Diskette Drive Cable149588-001
3. Removable Hard Drive
- 810 MB177819-001
- 510 MB194086-001
- 340 MB149591-001
- 250 MB149750-001
- 170 MB194079-001
4. Hard Drive Carrying Case149783-001
===========================================================================
3.5 Batteries
Table 3-5. Batteries
===========================================================================
DescriptionSpare Part Number
===========================================================================
Table 3-6. Cables and Connectors
===========================================================================
DescriptionSpare Part Number
===========================================================================
1. PCMCIA Ejector Rails
(includes PCMCIA spacer tool)196454-001
2. LED Cable Assembly149707-001
3. Diskette Drive Cable149588-001
4. Power Cord
- U.S./Canadian149710-001
- European149710-002 *
- U.K.149710-003 *
- Japanese149710-007 *
- Australian149710-008 *
5. ZIF Connector Slides140069-001 *
6. Display Cable(Refer to Table 3-3.) *
7. Display Ground Cable(Refer to Table 3-3.) *
--------------------------------------------------------------------------* Not shown.
Table 3-7. Keyboards
===========================================================================
DescriptionSpare Part Number
===========================================================================
U.S. English149608-001
U.K. English149608-003 *
German149608-004 *
French149608-005 *
Italian149608-006 *
Spanish149608-007 *
Danish149608-008 *
Norwegian149608-009 *
Swedish/Finnish149608-010 *
Swiss149608-011 *
French Canadian149608-012 *
Portuguese149608-013 *
Latin American149608-016 *
Belgian149608-018 *
Japanese149608-019 *
--------------------------------------------------------------------------* Not shown.
===========================================================================
3.8 Latches Kit
Table3-8. Latches Kit
===========================================================================
DescriptionSpare Part Number
===========================================================================
Kit includes:149600-001
Battery release latch assembly
(button, latch, and spring)
Hard drive release latch assembly
(button, latch, and spring)
Right display latch, latch spring, and button
Left display latch, latch spring, and button
Table3-9. Doors Kit
===========================================================================
DescriptionSpare Part Number
===========================================================================
Kit includes:194158-001
Input/output (I/O) connector cover
Automobile adapter door
Hard drive compartment door
PCMCIA compartment door
PCMCIA compartment door spring
Memory access cover
Table3-10. Miscellaneous Plastics Kit
===========================================================================
DescriptionSpare Part Number
===========================================================================
Kit includes:194157-001
Control slides for TFT display (Quantity = 3)
Control slides for STN display (Quantity = 6)
Rubber feet (Quantity = 4)
Right hinge cover
Left hinge cover
Display screw covers
Table3-11. Miscellaneous Small Mechanical Parts Kit
===========================================================================
DescriptionSpare Part Number
===========================================================================
Kit includes:149781-001
Auxiliary battery bracket
Diskette drive shield
Battery pack eject spring
Power interface board (PIB) mounting bracket
Power interface board (PIB) mounting bracket insulator
Hard drive security clips (Quantity = 2)
Display switch spring
Trackball shield
Hard drive lock labels (Quantity = 5)
Table3-12a. Compaq LTE Elite Screws and Fasteners Kit
===========================================================================
DescriptionSpare Part Number
===========================================================================
Compaq LTE Elite Screws and Fasteners Kit
Table 3-12b. Compaq LTE Elite Screw and Fastener Locations
===========================================================================
Where UsedDescriptionTypeDrive(in.-lbs.)QtyNumber
===========================================================================
DISPLAY ENCLOSURE AND BOARDS:
Bezel toScrew,Truss,T8/SL3.04144864-004
displayM2.5 x 6.0MA,
enclosureCS
(2 through
clutches)
--------------------------------------------------------------------------Clutches toScrew,Truss,T8/SL3.02144864-004
displayM2.5 x 6.0MA,
enclosureCS
--------------------------------------------------------------------------Panel toScrew,Truss,T83.04121187-006
displayM3.0 x 6.0MA,
enclosureCS
--------------------------------------------------------------------------InverterScrew,Truss,T8/SL2.02144863-005
board toM2.0 x 6.0MA,
displayCS
enclosure
--------------------------------------------------------------------------TrackballScrew,Truss,T82.02144863-005
board toM2.0 x 6.0MA,
displayCS
enclosure
Internal ACScrew,Truss,T8/SL3.02144864-004
power supplyM2.5 x 6.0MA,T
to systemCS
board
(on top)
--------------------------------------------------------------------------Internal ACScrew,Truss,T8/SL3.02144864-004
power supplyM2.5 x 6.0MA,
to systemCS
unit
enclosure
(at rear)
===========================================================================
Maximum
TorqueRef. Part
Where UsedDescriptionTypeDrive(in.-lbs.)QtyNumber
===========================================================================
Serial,Screwlock,Hex,3/16"4.08106902-005
parallel,4-40 sems,MA,
externalext. tooth,CS
monitor,F
external
options
connectors
(at rear)
--------------------------------------------------------------------------PIB/PCMCIAScrew,Truss,T8/SL2.02144863-007
rails toM 2.0 x 20.5MA,
system unitCS
enclosure
(long screws)
--------------------------------------------------------------------------Keyboard toScrew,Truss,T8/SL3.02144864-004
system unitM2.5 x 6.0MA,
enclosureCS
--------------------------------------------------------------------------System boardScrew,Truss,T8/SL3.06144864-004
to systemM 2.5 x 6.0MA,
unitCS
enclosure
--------------------------------------------------------------------------PIB toScrew,Truss,T8/SL2.03144863-005
PCMCIAM2.0 x 6.0MA,
connectorCS
(short
screw)
--------------------------------------------------------------------------Keyboard/Screw,Truss,T8/SL3.01144864-004
mouseM2.5 x 6.0MA,
connectorCS
--------------------------------------------------------------------------AutomobileScrew,Truss,T8/SL2.02144863-005
adapterM2.0 x 6.0MA,
connectorCS
to system
unit
enclosure
KeyboardScrew,Truss,T8/SL3.05144864-006
cover toM2.5 x 21.0MA,
system unitCS
enclosure
(on bottom)
--------------------------------------------------------------------------KeyboardScrew,Truss,T8/SL3.01144864-004
cover toM2.5 x 6.0MA,
system unitCS
enclosure
(at rear)
--------------------------------------------------------------------------Clutches toScrew,Truss,T8/SL3.04144864-003
system unitM2.5 x 10.0MA,
enclosureCS
===========================================================================
--------------------------------------------------------------------------* Not shown.
===========================================================================
3.14 Options
Table 3-14. Compaq LTE Elite Options and Accessories
===========================================================================
DescriptionSpare Part Number
===========================================================================
14. Compaq MiniStation Screws and Fasteners Kit195565-001 *
--------------------------------------------------------------------------* Not shown.
** The Compaq MiniStation/EN uses a SCSI/Ethernet board and the Compaq
MiniStation/TR uses a SCSI/Token Ring board.
*** The I/O bracket overlay is installed over the connectors on the back of
the I/O bracket of the power supply board. The Compaq MiniStation/EN
and the Compaq MiniStation/TR each use a different overlay. Both
overlays are provided with the power supply board.
Video Software Kit181031-001
===========================================================================
3.17 Documentation
Table3-17. Documentation
===========================================================================
DescriptionSpare Part Number
===========================================================================
Compaq LTE Elite/Compaq SmartStation Maintenance149601-001
and Service Guide
Table3-18. Shipping Box
===========================================================================
DescriptionSpare Part Number
===========================================================================
Compaq LTE Elite Shipping Box149593-001
===========================================================================
Chapter 4 - Compaq LTE Elite Removal and
Replacement Procedures
Introduction
This chapter provides subassembly level removal and replacement procedures
for the Compaq LTE Elite. Unless otherwise specified, the steps for
replacement procedures are the reverse of the steps for the removal
procedures.
After completing all necessary removal and replacement procedures, run POST
and Computer Setup to verify that all components operate properly (refer to
Chapter 2).
4.1 Precautions
This section covers precautions that must be followed when servicing the
computer.
Electrostatic Discharge (ESD)
A sudden electrostatic discharge (ESD) can destroy static-sensitive devices
or microcircuitry. Use proper packaging and grounding techniques to prevent
damage.Refer to Appendix E for more information on ESD.
Electrostatic discharge can damage electronic components.Be sure that you
are properly grounded before performing any maintenance and service
procedures.
Use the following precautions when handling cables to avoid irreparable
damage to the cable or the computer:
o Always handle cables by their connectors.
o Avoid bending, twisting, or pulling on the cables.
o Apply the minimum required force when seating or unseating the cables
from their connectors.
o Place cables in such a manner that they cannot be caught or snagged by
parts being removed or replaced.
o Handle flex cables with extreme care, as they can easily tear.
ZIF Connectors
The computer uses zero insertion force (ZIF) connectors for the following
connections:
o Keyboard to system board
o Diskette drive to system board
o Display cable to system board
o Display cable to display panel (black-and-white TFT only)
To remove a cable from a ZIF connector, lift both corners of the ZIF
connector slide simultaneously with constant light force until the
connector slide releases, then remove the cable (Figure 4-1).
A ZIF connector and its attached cable can be easily damaged. Handle only
the connector slide when removing or replacing a cable. Never pull or twist
on the cable while it is connected.
IMPORTANT: Due to space limitations inside the system unit, the display
cable cannot be removed from the system board ZIF connector
using the standard removal technique. To remove the cable, the
connector removal tool must be used. Refer to "Removing the
Display Assembly" in Section 4.9.
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.