Welcome to the Maintenance and Service Guide (MSG) for Compaq Presario 1400 Series Portable
Notebooks. This online guide is designed to serve the needs of technicians whose job is to repair
Compaq products.
For copyright and trademark information, refer to the Notice
serial number, to see symbol conventions, or to view technician’s notes, see the Preface
updated online as needed.
For comments or questions about the contents of this MSG, contact Compaq
referred to throughout this MSG is synonymous with the term Computer.
To report a technical problem, contact the Regional Support Center or IM Help Center.
For help with navigating through this guide, refer to Using this Guide
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1400 S
ERIES
section of this MSG. To locate the unit’s
. This MSG is
. The term Notebook as
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Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
To effectively navigate through this guide, refer to the list of bookmarks at the left of the screen.
These bookmarks quickly and easily provide a thorough index of the entire document. These
bookmarks remain in full view throughout the Maintenance and Service Guide (MSG).
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Click one of the bookmarks or one of the color-coded bubbles on the Welcome page to view a
chapter in this MSG.
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Click the + to expand or show the contents of a section, or click the – to hide the contents.
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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1400 S
ERIES
2
Page 3
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
The information in this guide is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS
OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES
RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.
This guide contains information protected by copyright. No part of this guide may be photocopied or
reproduced in any form without prior written consent from Compaq Computer Corporation.
Compaq, Presario 1400 Series, Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows 98
and Windows 2000 are trademarks of Microsoft Corporation.
The software described in this guide is furnished under a license agreement or nondisclosure
agreement. The software may be used or copied only in accordance with the terms of the
agreement.
Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Maintenance and Service Guide
Compaq Presario 1400 Series Portable Notebook
First Edition (May 2000)
Compaq Computer Corporation
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1400 S
ERIES
B
EFORE YOU BEGIN
1
Page 4
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
TheMaintenance and Service Guide is a troubleshooting guide that can be used as a reference when
servicing the Compaq Presario 1400 Series Portable Notebooks.
Compaq Computer Corporation reserves the right to make changes to Compaq Presario 1400 Series
Portable Notebooks without notice.
Symbols
The following words and symbols alert you to special messages throughout this guide.
WARNING: Text set off in this manner indicates that failure to follow the
Å
directions in the Warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow the directions
Ä
Ä
ÄÄ
in the Caution could result in damage to equipment or loss of data.
Important: Text set off in this manner presents clarifying information or extra or
specific instructions.
Note: Text set off in this manner presents commentary or interesting points of
information.
Technician Notes
WARNING: Only authorized technicians trained by Compaq should repair this
Å
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, the user should not attempt to make repairs at the
component level or modifications to any printed circuit board. Improper repairs
can create a safety hazard. Any indications of component replacement or printed
circuit board modifications may void any otherwise valid warranty.
Serial Number
When requesting information or ordering spare parts, Compaq will need the Notebook’s serial
number. The Serial Number
is located on the underside of the Notebook.
2 B
EFORE YOU BEGIN
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1400 S
ERIES
Page 5
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
This section provides connector pin assignment tables for Compaq Presario 1400 Series
Portable Notebook. For additional information on connectors, refer to the sections on
Rear Connectors
Modem
.
Universal Serial Bus
1Power4Ground
2Data -5Ground
3Data +6Ground
Modem
1Ring
2Tip
Universal Serial Bus
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
1400 S
ERIES
PIN A
SSIGNMENTS
1
Page 30
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
This chapter describes power management and proper battery operating practices for Presario 1400
Series Notebooks. These practices include conservation of AC power and effective control of energy
to extend the operating life of the battery. The following Power Mode sections also outline the
correct methods of starting and shutting down the Notebook in various situations.
Power Modes
Presario 1400 Series Notebooks have three levels of low power: Hibernation, Standby, and Full Off.
Hibernation
Hibernation mode helps conserve battery life and protect data. The Notebook automatically enters
Hibernation when the battery has little power left, or when the Notebook (operating on battery
power) is in Standby mode for more than one hour. As the Notebook enters Hibernation, it
automatically stores the contents of its memory to the hard drive before shutdown. When the
Notebook wakes from Hibernation, it returns to its former state.
Note: When the Notebook enters or wakes from Hibernation mode, a Progress window is
displayed.
To activate Hibernation mode, press the Power
To resume from Hibernation mode, press the Power
Ÿ button once.
Ÿ button once.
Standby
Standby is a low-power mode, also referred to as Sleep mode. The Notebook maintains system
information and open files while in Standby mode. Selecting Standby instead of turning off the
Notebook when your have finished working has two advantages: 1. It allows the Notebook to wake
up faster than it would if it had been turned off; 2. It saves more power than the Active-On mode.
CAUTION: Unsaved information is lost if the Notebook is turned off prior to
system wake-up, or if a power loss occurs while using the AC adapter.
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Ä
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To activate Standby/Sleep mode, press Fn+F4 or click Start. Select the Shut Down option, and
then Standby.
Full Off mode consumes no power. The battery charges continuously if the battery is installed while
the Notebook is in Full Off mode and if the Notebook remains plugged into external AC power.
Note: Unsaved information is lost if the Notebook is turned off without first saving the
data.
To activate Full Off mode, complete the following steps:
1. Click the Start button on the Windows taskbar.
2. Click Shut Down, then select Shut Down from the options.
To r es um e f r o m Full Off mode, press the Power button once.
CAUTION: The Notebook must be turned off (Full Off mode) when installing or
replacing components. Follow the instructions for putting the Notebook into
Ä
Ä
ÄÄ
Full Off mode. Be sure to unplug the Notebook from the outlet, and remove the
battery pack (refer to the removal procedures section: Battery Pack) before
servicing any parts.
The following table outlines the procedures for entering and exiting the various power modes, and
the external indicators for each mode.
Standby ModeHibernation ModeOff Mode
Automatic
Activation
15 minutes if using
battery power* (preset
default)
When battery is low or
after 1 hour of
Standby*
Standard Shutdown*:
click Start on the
Windows taskbar, click
Shut Down, and then
Shut Down from menu
options.
Manual
Activation
Press Fn+F4 key
combination or click
Start on the Windows
taskbar, Shut Down, and
then Standby.
Press the Power Ÿ
button once.
Manual Shutdown**:
Press and hold down the
Power
Ÿ button for
four seconds.
OR
Fn+Power (press and
hold the Fn key then
press the Power
button).
Resume/
Exit
Indicators
* T
The Notebook will not automatically enter Standby or Hibernation mode if using AC power.
Important: The Manual Shutdown procedure is not recommended unless the Standard Shutdown is
Power management modes can be initiated based on the amount of time passed since the last
system activity. System activity includes keyboard strokes, mouse movement, CD/DVD playback,
and modem usage.
Power Schemes
Different patterns of Notebook use determine the level of power management needed. The Power
management settings can be selected using several predefined Power Schemes. To access these
options, select Power Management on the Control Panel, then click the Power Schemes tab. The
default Power Schemes are Home/Office Desk, Portable/Laptop, and Always On. Power Schemes can
also be customized by changing the following options:
•
System Standby: the length of inactivity before the Notebook goes into Standby mode
•
Turn Off Monitor: the length of inactivity before the screen times out and goes blank
•
Turn Off Hard Disks: the length of inactivity before the hard drive goes into low-power
mode
Important: The setting for the Hard Disk must be less than or equal to the setting for
the System. If the Notebook is on a network, Compaq recommends that System
Standby be set to Never.
The following table shows the default settings for each Power Scheme.
Power SchemeAC PowerBattery Power
Always On
System Standby
Turn OF F Mo nit o r
Turn OFF Hard Disks
Hibernate
Never
20 minutes
Never
Never
Never
15 minutes
30 minutes
Never
Portable/Laptop
System Standby
Turn OF F Mo nit o r
Turn OFF Hard Disks
Hibernate
Never
3 hours
15 minutes
Never
15 minutes
Never
10 minutes
1 hour
Home/Office Desk
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Hibernate
The Notebook can be set to Alarm when the battery power level is reduced or when it reaches a
critically low level. The Notebook can also be set to enter a low-power mode when the battery
reaches a specific power level.
CAUTION: The settings on the Alarms tab are preset for the Notebook to run at
optimum efficiency. Changing any of these settings may cause the Notebook to
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Ä
ÄÄ
function improperly. It is recommended that these settings be left at their default
values.
Default Alarm Settings
SettingLow BatteryCritical Battery
Alarm power level10%0%
NotificationSoundNo Action
Power ModeNo ActionHibernation
ActiveEnabledEnabled
Rebooting After a Lockup
To reboot the Notebook when the keyboard is frozen, or when the screen is locked, press and hold
down the Power
Notebook with a single press of the Power
If the Notebook still does not recover, shut it down by pressing the Power
down for four seconds. Then remove the battery and unplug the AC power for at least 30 seconds.
Reinsert the battery or reconnect AC power, and press the Power
Ÿ button for at least four seconds to perform a Manual Shutdown. Then restart the
Ÿ button.
Ÿ button and holding it
Ÿ button once to reboot.
Recovering From a Loss of Electrical Power
Loss of electrical power causes the Notebook to turn off automatically. This may cause loss of data
because the Microsoft Windows operating system is not able to close all the files and programs
properly.
Loss of power may be caused by one of the following:
If power surges or sags, the display and status lights may flicker, and the Notebook may
automatically restart. If an improper shutdown occurs, the Microsoft Windows utility program,
ScanDisk, runs automatically once power is restored. ScanDisk determines whether the improper
shutdown has caused any errors on the hard disk. These errors may occur if the Microsoft Windows
operating system is not able to close all files correctly before the shutdown. If no errors are found,
the restart process continues. If ScanDisk does detect errors, follow the instructions on the screen
to continue the restart process. Work or information that was not saved before the loss of power or
shutdown may be lost.
If a power failure occurs, or if the power cord disconnects while the Notebook is turned on, turn it off
until normal service is restored. The next time the Notebook is turned on, ScanDisk may run to
check the hard disk for errors caused by improper shutdown.
Increasing Battery Pack Operating Time
Battery pack operating life is affected by several variables. To avoid unnecessary replacement,
consider the following when determining how long a charged battery pack should last:
•
Power conservation settings
•
Hardware configuration
•
Software applications
•
Installed options
•
Display brightness\\Server\projects\Compaq_Port\Portable TimesheetHard drive usage
Changes in operating temperatures
•
•
Type and number of installed PC cards
Note: Power consumption requirements for PC cards vary widely. Some cards drain the
battery pack very rapidly.
Battery pack operating life can be increased by as much as 50 percent by controlling the energy
required by the Notebook and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the Notebook, follow these guidelines:
•
Set the power conservation levels in the Power Management utility to Maximum.
•
Customize the time-out value to work more efficiently with the applications. The length of
battery life depends on the values selected.
To maximize the energy stored in the battery pack, follow these guidelines:
•
Condition a Battery Packat least every 30 days to improve overall battery performance.
•
Keep a battery pack in the Notebook when using it with AC power to supply the battery pack
with a constant trickle charge.
•
Store the battery pack in a cool, dry place when not in use.
Conditioning a Battery Pack
CAUTION: To avoid loss of data, make sure that all information is saved before
completely discharging a battery pack.
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Ä
ÄÄ
To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the fast charge arrow on the
status display disappears. The battery gauge may read 100% for a period of time before the
arrow disappears.
Note: Do not unplug the AC adapter until the arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the Notebook enters Hibernation
mode. The Notebook can be used normally during this process.
Note: If the AC adapter is connected while the battery is draining, the process must be
repeated, beginning with Step 1.
The battery is now reconditioned. Plug in the AC adapter and begin using the Notebook.
The table below shows typical battery charging times for each model.
In the interests of safeguarding our environment, Compaq Computer Corporation recommends that
nickel metal hydride (NiMH) and lithium-ion (Li-ion) battery packs be recycled. Battery packs should
be handled in accordance with country, state, province, or local regulations.
WARNING: Battery pack contains harmful components when exposed. Do not
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Å
ÅÅ
open, crush, puncture, or incinerate the battery pack. It contains no
field-serviceable parts. Dispose of battery packs properly. Failure to dispose
of battery packs properly may cause harm to humans, animals, and
the environment.
This section provides information for troubleshooting Compaq Presario 1400 Series Portable
Notebooks. To isolate problems while troubleshooting the Notebook, refer to the following
procedures:
1. Preliminary Steps
2. Power-On Self-Test (POST
.
).
3. Test the recommended actions described in the diagnostic tables if POST is unavailable or if
POST displays an error message.
When following the recommended actions in the Sections about the Power-On Self-Test (POST)
Diagnostic Error Codes
, perform the steps in the order listed. Rerun POST after each recommended
and
action until the problem is solved or no error messages occur. Once the problem is solved, do not
continue with any remaining recommended actions.
Note: If the problem is intermittent, check the Notebook several times to verify that the
problem is solved.
Before running the Power-On Self-Test (POST), complete the following steps:
1. If a Power-on password has been established, type the password and press the Enter key. If
the password is unknown, clear the password (See Clearing the Power-On Password
).
2. Run the Computer Checkup (TEST)
.
3. Turn off the Notebook and all external devices.
4. Disconnect any external device that does not need testing. Do not disconnect the printer if it
needs testing or if it is required to log error messages.
Important: If the problem only occurs when an external device is connected to the
Notebook, the problem may be related to the external device or its cable. Check this by
running POST both with and without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if these ports need testing.
6. Ensure that the hard drive is installed in the Notebook.
7. Ensure that the battery pack is inserted into the Notebook, and that it is connected to an
external AC power source.
When these preliminary steps are completed, run the Power-on Self-Test (POST)
Turn off the Notebook, then turn it on again. As soon as the Compaq logo appears, press ESC to
clear the logo and display the POST messages as they occur.
If the Notebook does not beep, POST has successfully completed its test and detected no errors.
POST then re-boots from the hard drive, or from a bootable diskette if one is installed in the diskette
drive.
However, if POST detects errors, these errors are indicated by either displayed or audible messages
or both. Listed below are probable causes of and recommended actions to resolve the problems of
each POST error codes.
The following tables list error codes, a description of the error condition, and the action required to
resolve the error condition.
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 (pg 10
Compaq Diagnostics are installed on the hard drive of the Notebook. Run the Diagnostic utilities
when viewing or testing system information or if devices have been installed or connected. If
Compaq Diagnostics are performed from a diskette, ensure that the diagnostic program is
version 10.11 or later.
Perform the following utilities from the Diagnostics menu:
•
Run Computer Checkup (TEST).
•
View System Information (INSPECT).
•
Prepare Notebook for a Compaq Service Call (RemotePaq)
If a problem is unsolvable, run the following Diagnostics utilities before calling for support:
1. Run Computer Checkup.
2. Save the device list.
3. Save the log of errors to file and print.
4. Run the View System Information (INSPECT) utility.
5. Save and print the information generated by the utility.
6. Have the files and the printed information ready when calling for
support.
Computer Checkup (TEST) determines whether the various Notebook components and devices are
recognized by the system and functioning properly. Information generated by Computer Checkup
can be displayed, printed, or saved.
Follow this procedure to run Computer Checkup:
1. Plug the Notebook into an external power source. (A low-battery condition could interrupt the
program.)
2. Turn on the external devices that need testing. Connect the printer if a log of error messages
needs printing.
3. Insert the Compaq Diagnostics diskette in drive A.
4. Turn on or restart the Notebook. The Notebook starts from drive A, and the Diagnostics
Welcome screen is displayed.
5. Press Enter to continue. The Diagnostics menu is displayed on screen.
6. Select Computer Checkup from the Diagnostics menu. A Test Option menu is displayed.
7. Select View the Device List from the Test Option menu. A list of the
installed Compaq devices is displayed.
8. If the list of installed devices is correct, select OK. The Test Option menu is displayed.
Note: If the list is incorrect, check new devices for proper installation.
Select one of the following from the Test Option menu:
Quick Check Diagnostics. This check 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.
Error messages cannot be printed or saved.
Automatic Diagnostics. This diagnostic runs unattended, performs maximum testing of each
•
device with minimal prompts, and allows the operator to choose how many times to run the tests, to
stop on errors or to print and save a log of errors.
Prompted Diagnostics. This test allows maximum control over testing the devices. It permits the
•
operator to choose attended or unattended testing, whether or not to stop on errors, or to choose to
print or save a log of errors.
9. Follow the instructions on the screen as the devices are tested. When testing is complete, the
Test Option menu is displayed.
The View System Information (INSPECT) utility provides information about the Notebook and
devices installed or connected to it. Display, print, or save the information.
Follow these steps to run View System Information (INSPECT) from the Compaq Diagnostics
diskette:
1. Turn on the external devices that need testing. Connect the printer to print the information.
2. Insert the Compaq Diagnostics diskette in drive A.
3. Turn on or restart the Notebook. The Notebook starts from drive A, and the Diagnostics
Welcome screen is displayed.
4. Press Enter to continue. The Diagnostics menu is displayed.
5. Select View System Information (INSPECT) from the Diagnostics menu.
6. Select an item from the following list to view diagnostic codes:
System
ROM
Keyboard
System ports
System storage
Graphics
Memory
Audio
Operating system
System files
Windows files
7. Follow the instructions on the screen to cycle through the screens, to return to the list and
choose another item, or to print the information.
Diagnostic error codes are displayed if the system recognizes a problem while running the Compaq
Diagnostic program. These error codes help to identify possibly defective subassemblies.
The following tables list error codes, a description of the error condition, and the action required to
resolve the error condition.
Important: Retest the system after completing each step. If the problem has not been
resolved, do not proceed with the remaining steps.
For the removal and replacement of a particular subassembly, see Procedures.
This section provides information about how to identify and correct some common hardware,
memory, and software problems. It also explains several types of common messages that may be
displayed on the screen. The following pages contain troubleshooting information for the topics in
the list below:
Audio (
Battery (
DVD or CD drive (pg 22
Diskette drive (
Display (
Hard drive (
Hardware Installation (
pg 19
pg 19
pg 24
)
)
pg 23
)
pg 27
)
)
)
pg 28
)
Memory Problems (
PC Card (
Power (
Printer (
Tou c hPa d (
Keyboard/Numeric keypad
(
pg 29
pg 31
pg 32
pg 33
pg 34
)
pg 30
)
)
)
)
)
Since symptoms of different problems can appear to be similar, carefully match the symptoms of the
Notebook malfunction against the problem description in the Troubleshooting tables to avoid a
misdiagnosis.
WARNING: To avoid a potential shock hazard during troubleshooting procedures,
Å
disconnect all power sources before removing the keyboard cover or the
display bezel.
Some minor problems and possible solutions are outlined in the following tables. If the problem
appears related to a software application, check the documentation provided with the software.
Solving Audio Problems
Some common audio problems and solutions are listed in the following table:
Solving Audio Problems
ProblemProbable CauseSolution
Notebook does not
beep after the
Power-On Self-Test
(POST).
This action is typical; it
indicates successful
completion of the Power-On
Self-Test (POST).
No action is required.
Solving Battery Pack and Battery Gauge Problems
Some causes and solutions for common battery pack problems are listed in the table below. The
“Solving Power Problems” section in this chapter may also be applicable.
Solving Battery Pack and Battery Gauge Problems
ProblemProbable CauseSolution
Notebook won’t turn
on when battery pack
is inserted and power
cord is unplugged.
Battery pack is discharged.• Connect the Notebook to
an external power
source and charge the
battery pack;
OR
• Replace the battery pack
with a fully charged
battery pack.
Check the battery
connectors on the system
board to ensure that they
are evenly spaced and not
bent or broken.
This section lists some causes and solutions for common Notebook display and external monitor
problems.
You can perform a monitor self-test on an external VGA color or monochrome monitor by
disconnecting the monitor from the Notebook. To do so, complete the following steps:
1. Turn off the monitor.
2. Turn off the Notebook.
3. Disconnect the monitor signal cable from the Notebook.
4. Turn on the monitor and allow it to warm up for one minute.
The display should appear white. On the left and right sides of the screen, a narrow black border
may also be present. If the display screen indicates either of these patterns, the monitor is working
properly.
Solving Display Problems
ProblemProbable CauseSolution
Screen is dim.Brightness control is set too
low.
Notebook screen is in direct
light.
Screen is blank.Screen save was initiated by
Power Management due to
lack of user activity.
Display has overheated.If the Notebook is in direct sunlight, move it to
Display is blank and the
Suspend icon is
flashing.
Internal display is
blank, but the screen on
an external monitor
displays information.
Internal display flashes
or has garbled
characters when the
Notebook is connected
to an external monitor.
Continued
System is in Suspend mode.Press any key or touch the TouchPad.
Display function was switched
to the external monitor.
Used 1024 x 768 or higher
resolution on external monitor
and toggled back to internal
display, which supports up to
800 x 600.
Adjust the Brightness of the display by using
Fn+F7 or Fn+F8.
The light tubes on the
edge of the display
panel do not light up,
and the Power-On
Self-Test (POST)
completes when the
unit is powered up.**
The light tubes on the
edge of the display
panel do not light up,
and the Power-On SelfTes t (P O ST ) do e s n o t
complete when the unit
is powered up.**
Backlight (brightness)
cannot be adjusted with
Fn+F7 or Fn+F8.
Improper backlight or display
Replace the display assembly.
cable connections
Defective inverter boardReplace the display assembly.
Defective display cableReplace the display assembly.
Defective display panelReplace the display assembly.
Defective system boardReplace the system board.
Defective system boardReplace the system board.
Improper display cable
connections
1. Reseat the display cable to the system
board.
2. Replace the display assembly.
Defective inverter boardReplace the display assembly.
Defective display cableReplace the display assembly.
Defective system boardReplace the system board.
**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 it up. If an external monitor is not available, confirm
that POST completes by opening and closing the display, listening for the single or double beep
and watching for the icons to turn on at the front of the Notebook.
The display panel has a
continuous pattern
across it (for example,
“jailbars” pattern), has
Improper display cable
connections
Reseat the display cable to the
system board and the display
assembly until the problem is
solved.
a single color on it, or
has garbled graphics
across the entire panel.
This failure occurs
across the entire panel,
not just in one section.
Defective display cableReplace the display assembly.
Defective inverter boardReplace the display assembly.
Defective system boardReplace the system board.
A single line, small
Defective display panelReplace the display assembly.
group of lines, or block
appears on the display
panel. This failure
occurs in only one
section of the display
panel.
Note: To perform a “self-test” on an external VGA color or monochrome monitor,
verify the following: The screen should appear white. On the left and right sides of
the screen, a narrow black border may also be present. If the display screen
indicates either of these patterns, the monitor is working properly.
The following table lists some causes and solutions for common PC Card problems.
Solving PC Card Problems
ProblemProbable CauseSolution
When the Notebook is turned
on and a PC card is inserted,
the Notebook does not beep.
PC card modem, fax, or
network card does not work.
Card is not inserted properly.Ensure that the card is inserted in the
correct orientation.
PC card beeps are disabled.Double-click the PC card icon in the
Control Panel, then click the Global Settings tab, enabling the PC Card
sound effects.
Speaker is turned off or volume is
turned down.
Press volume buttons to turn the
speaker on, then increase the
volume.
PC card drivers are not installed.Double-click the Add New
Hardware icon in the Control Panel
for installation instructions. If the PC
card or drivers are not compatible
with Windows, install drivers and use
the PC Card in MS-DOS mode.
Card or card driver is not
supported.
Contact Compaq’s authorized service
provider for a list of PC cards tested
successfully in Compaq PC card
platforms.
Card is not fully inserted into the
slot or is not inserted properly.
Telephone cord is not plugged in all
the way.
Ensure that the card is inserted in the
correct orientation.
Check and secure telephone
connection.
PC card modem or fax card
does not work.
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
Necessary drivers are not installed
Install drivers.
(turned on).
You are trying to access the card
See Specifications to verify COM port.
using the wrong COM port.
The card conflicts with a serial
See Specifications to verify address.
device.
The card is not supported.Use supported cards only.
If you experience problems printing, run a printer self-test. Refer to the documentation provided
with the printer for instructions. If the self-test fails, it is a printer-specific problem. Refer also to the
printing section of the application documentation.
Solving Printer Problems
ProblemProbable CauseSolution
Printer will not turn on.The signal cable may not be
connected properly, or the
printer is unplugged.
Printer will not print.Printer is not turned on or is
offline.
The device drivers for the
application are not installed.
A Printer is set up for a
network, but is not
connected to that network.
Printer cable is too long,
unshielded, or defective.
Paper tray is empty.Fill the paper tray with paper and
Printer prints garbled
information.
Correct printer drivers are
not installed.
Cable is not connected
properly.
Ensure that the signal cable is
properly connected and that the
power cord is connected to the
electrical outlet.
Turn the printer on and set it to
online.
Refer to the printer documentation
to install the correct printer driver.
Connect the printer to the
network.
Replace the cable.
set the printer to online.
Refer to the printer documentation
to install the correct printer driver.
Ensure that the printer signal
cable is properly connected to the
Notebook.
This section describes the removal and replacement process for the Presario 1400 Series Notebook.
The procedures are divided into two subsections: The Customer Removable Parts and The Service
Removable Parts
and the second subsection explains which parts should be serviced by the technician.
. The first subsection explains which parts may be removed by the customer/owner,
The Customer Removable Parts
Serial Number
Report your Notebook’s serial number 1 to Compaq when requesting information or ordering spare
parts. The serial number is located on the underside of the Notebook as shown below.
WARNING: Prior to servicing your Notebook, disconnect AC power cords and
Å
external devices, and remove the battery pack and any PC Cards. Failure to
disconnect electrical devices may cause damage to the Notebook and loss of
human life.
P
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EMOVAL SEQUENCE
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Page 76
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device that has been exposed to electrostatic discharge (ESD) may not seem to be affected and
work perfectly throughout a normal cycle. Although the Notebook may function normally for a period
of time, it may have been degraded in the internal layers, reducing the its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases the
discharge contains enough power to alter device parameters or melt silicon junctions.
Generating Static
The table below shows activities that generate static electricity and the associated level of
electrostatic voltage.
Typical Electrostatic Voltages
EventRelative Humidity
10%40%55%
Walking across carpet35,000 V15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tubes2,000 V700 V400 V
Removing DIPS from vinyl trays11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCBs26,000 V20,000 V7,000 V
Packing PCBs in foam-lined box21,000 V11,000 V5,000 V
Note: 700 volts can degrade a product.
2 R
EMOVAL SEQUENCE
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Page 77
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
During the disassembly and assembly of your Notebook, please keep in mind the considerations
listed below.
Tool and Software Requirements
Customer serviceable parts only require the following items during disassembly:
•
Small standard screwdriver
•
Small Phillips screwdriver
•
Diagnostics software
Screws
The screws used on the customer removable parts are Phillips. These screws are not
interchangeable. If an incorrect screw is applied during the reassembly process, it can damage the
unit. Compaq strongly recommends that you keep all screws with their respective parts as they are
removed during disassembly. Then replace the screws in their proper locations.
Important: As each subassembly is removed from the Notebook, place it away from the
work area to prevent damage.
Note: Screws inside the Compaq Presario 1400 Series Portable Notebooks vary in size
and are not interchangeable. During reassembly care must be taken to return the
correct screws to their original location. Keep all screws with their respective
subassembly during removal.
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Page 78
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
Before beginning The Removal and Replacement Procedures, complete the following steps:
1. Disconnect AC power and any external devices.
2. Remove any PC cards.
3. Remove the battery pack (pg 5
WARNING: Battery pack contains harmful components when exposed. Do not
Å
Å
ÅÅ
open, crush, puncture, or incinerate the battery pack. It contains no fieldserviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
CAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
Ä
Ä
ÄÄ
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.
).
4 R
EMOVAL SEQUENCE
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Page 79
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
To remove the battery pack, complete the following steps:
1. Slide the battery compartment door switch
2. Simultaneously slide door
3. Lift door to remove.
Important: The battery pack should be removed before performing any
internal maintenance on the Notebook.
WARNING: Battery pack contains harmful components when exposed. Do not
Å
Å
ÅÅ
open, crush, puncture, or incinerate the battery pack. It contains no fieldserviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
2 right.
1 up to release the door.
CAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
Ä
Ä
ÄÄ
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.
Continued
P
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Page 80
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
To replace the battery pack, reverse these procedures.
WARNING: Battery pack contains harmful components when exposed. Do not
Å
Å
ÅÅ
open, crush, puncture, or incinerate the battery pack. It contains no fieldserviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
CAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
Ä
Ä
ÄÄ
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.
6 R
EMOVAL SEQUENCE
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
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ERIES
Page 81
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
To remove the Cosmetic Side Covers, complete the following steps:
1. Prepare the Notebook for disassembly (pg 4
).
2. Remove one screw located on the side near the back of the unit with a Phillips screwdriver
from the cosmetic side cover, left or right.
3. Slide or shift the cosmetic side cover backward to remove it from the Notebook.
4. Repeat this procedure for the other cosmetic side cover.
Note: To determine left and right sides of the Notebook, as referenced in this guide, face
the front of the unit toward you. As referenced in this guide, your left will be the same as
the Notebook’s left side, and your right will be the same as the Notebook’s right side.
To replace the Cosmetic Side Covers, reverse the procedure.
P
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Page 82
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
When customers request information or order spare parts, be sure to ask them for their Notebook’s
serial number
1. It is located on the underside of the unit.
Before servicing the unit, refer to Preparing the Notebook for Disassembly (pg 4
WARNING: Before servicing the Notebook, disconnect AC power cords and
Å
external devices, and remove the battery pack and any PC Cards. Failure to
disconnect electrical devices may cause damage to the Notebook and loss of
human life.
).
16 R
EMOVAL SEQUENCE
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
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ERIES
Page 91
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device that has been exposed to electrostatic discharge (ESD) may not seem to be affected and
work perfectly throughout a normal cycle. Although it may function normally for a period of time, it
may have been degraded in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases the
discharge contains enough power to alter device parameters or melt silicon junctions.
Generating Static
The table below shows activities that generate static electricity and their associated level of
electrostatic voltage.
Typical Electrostatic Voltages
EventRelative Humidity
10%40%55%
Walking across carpet35,000 V15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tubes2,000 V700 V400 V
Removing DIPS from vinyl trays11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCBs26,000 V20,000 V7,000 V
Packing PCBs in foam-lined box21,000 V11,000 V5,000 V
Note: 700 volts can degrade a product.
P
RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
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R
EMOVAL SEQUENCE
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Page 92
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
During the disassembly and assembly of the Notebook, please keep in mind the considerations listed
below.
Tool and Software Requirements
To service the Notebook, the following items are required:
•
Torx T-8 or T-9 screwdriver
•
5mm nut drivers (for screwlocks and standoffs)
•
Small standard screwdriver
•
Small Phillips screwdriver
•
Diagnostics software
Screws
The screws are not interchangeable. If an incorrect screw is applied during the reassembly process,
it can damage the unit. Compaq strongly recommends that you keep all screws with their respective
parts as they are removed during disassembly. Then replace the screws in their proper locations.
As each subassembly is removed from the Notebook, place it away from the work area to prevent
damage.
18 R
EMOVAL SEQUENCE
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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
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ERIES
Page 93
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
Most of the cables inside the Notebook are ribbon cables. Handle cables with extreme care to avoid
damage. During insertion or removal from the connector, apply only the amount of pressure
required to seat or unseat the cable, handling it by the connector whenever possible. In all cases,
avoid bending, twisting, or tearing the cables. Route cables in such a way that they cannot be
caught or snagged by parts being removed or replaced.
Cables
To avoid damage to the cable or the Notebook, the following precautions should be taken when
handling cables:
•
Always handle cables by their connectors.
•
Avoid bending, twisting, or pulling on the cables.
•
Apply minimum required force when seating or unseating the cables from their connectors.
•
Place the cables in such a manner that they cannot be caught or snagged by parts being
removed or replaced.
•
Handle flex cables with extreme care; they can tear easily.
CAUTION:
Ä
Ä
ÄÄ
the reassembly process. Improper cable placement can cause severe damage to
the Notebook.
When servicing Notebooks, place cables in their proper location during
Cable Illustrations
The following illustrations show the proper placement for each cable:
•
Zif Cable
•
Speaker Assembly Cable
•
Keyboard Ribbon Cable
•
NIC Cable
P
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Page 94
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
Plastic parts can be damaged by the use of excessive force during disassembly and reassembly.
Handle with care when disassembling and assembling plastic parts. As recommended in the
maintenance instructions, apply pressure only at the designated points.
ZIF Connectors
The Notebook uses zero insertion force (ZIF) connectors on the system board.
CAUTION:
Ä
Ä
ÄÄ
only the connector slide when removing or replacing a cable. Never pull or twist on
a cable while it is connected.
To remove a cable from a ZIF connector, lift both corners of the ZIF connector and slide
simultaneously with constant light pressure.
CAUTION:
Ä
Ä
ÄÄ
the reassembly process. Improper cable placement can cause severe damage to
the Notebook.
A ZIF connector and its attached cable can be easily damaged. Handle
When servicing a Notebook, place cables in their proper location during
To view other cables, click Cable Illustrations.
20 R
EMOVAL SEQUENCE
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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE
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Page 95
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,