This guide is a troubleshooting reference used for maintaining
and servicing the computer. It provides comprehensive
information on identifying computer features, components, and
spare parts; troubleshooting computer problems; and performing
computer disassembly procedures.
Microsoft and Windows are U.S. registered trademarks of Microsoft
Corporation. Intel, Pentium, and Celeron are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United States and
other countries. Bluetooth is a trademark owned by its proprietor and used
by Hewlett-Packard Company under license.
The information contained herein is subject to change without notice. The
only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing
herein should be construed as constituting an additional warranty. HP shall
not be liable for technical or editorial errors or omissions contained herein.
Maintenance and Service Guide
HP Pavilion dv1400 Entertainment Notebook PC
HP Compaq nx4820 Notebook PC
Compaq Presario V2400 Notebook PC
Second Edition November 2005
First Edition June 2005
Document Part Number: 396166-002
The HP Pavilion dv1400 Entertainment Notebook PC 1 and the
HP Compaq nx4820 Notebook PC and Compaq Presario V2400
Notebook PC (both represented by 2) offer advanced modularity,
Intel® Pentium® M and Celeron® M processors, and extensive
multimedia support.
HP Pavilion dv1400, HP Compaq nx4820, and
Compaq Presario V2400
Maintenance and Service Guide1–1
Product Description
1.1Features
■ The following processors are available, varying by
computer model:
❏ Intel Pentium M 770 (2.13-GHz) with 400-MHz FSB
❏ Intel Pentium M 760 (2.0-GHz) with 400-MHz FSB
❏ Intel Pentium M 750 (1.8-GHz) with 400-MHz FSB
❏ Intel Pentium M 740 (1.7-GHz) with 400-MHz FSB
❏ Intel Pentium M 735a (1.7-GHz) with 400-MHz FSB
❏ Intel Pentium M 730 (1.6-GHz) with 400-MHz FSB
❏ Intel Pentium M 725 (1.6-GHz) with 400-MHz FSB
❏ Intel Celeron M 380 (1.6-GHz) with 400-MHz FSB
❏ Intel Celeron M 370 (1.4-GHz) with 400-MHz FSB
❏ Intel Celeron M 360 (1.4-GHz) with 400-MHz FSB
❏ Intel Celeron M 350 (1.3-GHz) with 400-MHz FSB
■ 14.0-inch WXGA (1280 × 768) TFT display with over
16.7 million colors, varying by computer model
■ 80-, 60-, or 40-GB high-capacity hard drive, varying by
computer model
■ 256-MB DDR synchronous DRAM (SDRAM) at 266 MHz,
expandable to 2.0 GB on models with Intel Mobile Pentium
M processors and 1.0 GB on models with Intel Celeron M
processors
■ Microsoft® Windows® XP Home Edition or Windows XP
Professional, or Free DOS, varying by computer model
■ Full-size Windows keyboard with embedded numeric keypad
■ TouchPad pointing device with on button and dedicated
two-way scroll region
■ Integrated 10/100 BASE-T Ethernet local area network
(LAN) network interface card (NIC) with RJ-45 jack
■ Integrated high-speed 56K modem with RJ-11 jack
1–2Maintenance and Service Guide
Product Description
■ Integrated wireless support for Mini PCI IEEE 802.11b and
802.11b/g WLAN device
■ Support for one Type II PC Card slots, with support for both
32-bit (CardBus) and 16-bit PC Cards
■ External 65-watt AC adapter with 3-wire power cord
■ 6-cell or 12-cell Li-Ion battery pack
■ Stereo speakers with volume up and down buttons
■ Support for the following optical drives:
❏ DVD+RW/R and CD-RW Double Layer Combo Drive
with LightScribe
❏ DVD+RW/R and CD-RW Double Layer Combo Drive
❏ DVD/CD-RW Combo Drive
❏ DVD-ROM Drive
■ Connectors:
❏ External monitor
❏ Universal Serial Bus (USB) v. 2.0
❏ RJ-11 (modem)
❏ RJ-45 (network)
❏ Audio-out (headphone)
❏ Audio-in (microphone)
❏ Power
❏ IEEE 1394 digital (select models only)
❏ S-Video-out (select models only)
❏ Infrared (HP Pavilion models only)
❏ Parallel
❏ Serial
❏ Docking (select models only)
❏ Digital memory card reader (select models only)
Maintenance and Service Guide1–3
Product Description
1.2 Resetting the Computer
If the computer you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS:
1. Prepare the computer for disassembly (refer to Section 5.3,
“Preparing the Computer for Disassembly,” for more
information).
2. Remove the real time clock (RTC) battery (refer to
Section 5.16, “RTC Battery,” for more information).
3. Wait approximately 5 minutes.
4. Replace the RTC battery and reassemble the computer.
5. Connect AC power to the computer. Do not reinsert any
battery packs at this time.
6. Turn on the computer.
All passwords and all CMOS settings have been cleared.
1–4Maintenance and Service Guide
1.3Power Management
The computer comes with power management features that
extend battery operating time and conserve power. The
computer supports the following power management features:
■ Standby
■ Hibernation
■ Setting customization by the user
■ Hotkeys for setting the level of performance
■ Battery calibration
■ Lid switch standby/resume
■ Power button
■ Advanced Configuration and Power Management (ACPM)
compliance
Product Description
Maintenance and Service Guide1–5
Product Description
1.4 External Components
The external components on the front of the HP Pavilion dv1400
are shown below and described in Table 1-1.
Front Components, HP Pavilion dv1400
1–6Maintenance and Service Guide
Product Description
Tabl e 1-1
Front Components
HP Pavilion dv1400
ItemComponentFunction
1Speakers (2)Produce stereo sound.
2Power light■ On: Computer is turned on.
■ Blinking: Computer is in standby.
■ Off: Computer is off.
3IDE (Integrated Drive
Electronics) drive light
4Battery light■ Amber: The battery pack is charging.
5Display release latchOpens the computer.
6Audio-in
(microphone) jack
7Audio-out
(headphone) jack (2)
On or blinking: The internal hard drive or an
optical drive is being accessed.
■ Green: The battery pack is fully charged.
■ Off: The battery pack is discharging
or not inserted.
Connects an optional monaural
(single sound channel) microphone.
Connect optional headphones or powered
stereo speakers. Also connect the audio
function of an audio/video device such as
a television or VCR.
Maintenance and Service Guide1–7
Product Description
The external components on the front of the HP Compaq nx4820
and Compaq Presario V2400 are shown below and described in
Table 1-2.
Front Components, HP Compaq nx4820 and
Compaq Presario V2400
1–8Maintenance and Service Guide
Tabl e 1-2
Front Components
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1Speakers (2)Produce stereo sound.
Product Description
2Wireless button light
(select models only)
3Power light■ On: Computer is turned on.
4IDE (Integrated Drive
Electronics) drive light
5Battery light■ Amber: The battery pack is charging.
6Display release latchOpens the computer.
7Audio-in
(microphone) jack
8Audio-out
(headphone) jack
(2 on HP Pavilion
dv1400 models)
On: An integrated wireless device is
hardware enabled.
■ Blinking: Computer is in standby.
■ Off: Computer is off.
■ On or blinking: The internal hard drive
or an optical drive is being accessed.
■ Green: The battery pack is fully charged.
■ Off: The battery pack is discharging
or not inserted.
Connects an optional monaural
(single sound channel) microphone.
Connect optional headphones or powered
stereo speakers. Also connect the audio
function of an audio/video device such as
a television or VCR.
Maintenance and Service Guide1–9
Product Description
The external components on the right side of the
HP Pavilion dv1400 are shown below and described in Table 1-3.
Right-Side Components, HP Pavilion dv1400
1–10Maintenance and Service Guide
Product Description
Tabl e 1-3
Right-Side Components
HP Pavilion dv1400
ItemComponentFunction
1USB connectors (2)Connect an optional USB device.
26-in-1 Digital Media
Reader (select models
only)
31394 port
(select models only)
46-in-1 Digital Media
Reader light
(select models only)
5Optical driveSupports an optical disc.
6S-Video-out jack
(select models only)
In Windows, supports digital memory cards.
Connects an optional 1394a device such
as a scanner, digital camera, or digital
camcorder.
On: A digital memory card is being
accessed.
Connects an optional S-Video device, such
as a television, VCR, camcorder, projector,
or video capture card.
Maintenance and Service Guide1–11
Product Description
The external components on the right side of the
HP Compaq nx4820 and Compaq Presario V2400 are shown
below and described in Table 1-4.
Right-Side Components, HP Compaq nx4820 and
Compaq Presario V2400
1–12Maintenance and Service Guide
Product Description
Tabl e 1-4
Right-Side Components
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1USB connectors (2)Connect an optional USB device.
2Digital memory card
reader
(select models only)
31394 port
(select models only)
4Digital memory card
reader light
(select models only)
5Optical driveSupports an optical disc.
6S-Video-out jack
(select models only)
In Windows, supports digital memory cards.
Connects an optional 1394 device such
as a scanner, digital camera, or digital
camcorder.
On: A digital memory card is being
accessed.
Connects an optional S-Video device, such
as a television, VCR, camcorder, projector,
or video capture card.
Maintenance and Service Guide1–13
Product Description
The external components on the rear and left side of the
HP Pavilion dv1400 are shown below and described in Table 1-5.
Rear and Left-Side Components, HP Pavilion dv1400
1–14Maintenance and Service Guide
Tabl e 1-5
Rear and Left-Side Components
HP Pavilion dv1400
ItemComponentFunction
Product Description
1Wireless light
(select models only)
2Exhaust ventProvides airflow to cool internal
3Power connectorConnects an AC adapter cable.
4External monitor portConnects an optional VGA external monitor
5Expansion portConnects the computer to an optional
6RJ-45 (network) jackConnects an optional network cable.
7RJ-11 (modem) jackConnects the modem cable.
8USB connectorConnects an optional USB device.
9PC Card slotSupports an optional Type I or Type II 32-bit
On: An integrated wireless device is
hardware enabled.
components.
To prevent overheating, do not
Ä
obstruct vents. Do not allow a hard
surface, such as a printer, or a soft
surface, such as pillows, thick rugs
or clothing, to block airflow.
or projector.
expansion base.
(CardBus) or 16-bit PC Card.
Also serves as a storage location for the
optional HP Mobile Remote Control.
10PC Card eject buttonEjects an optional PC Card from the
PC Card slot.
11Security cable slotAttaches an optional security cable to the
computer.
Maintenance and Service Guide1–15
Product Description
The external components on the rear and left side of the
HP Compaq nx4820 and Compaq Presario V2400 are shown
below and described in Table 1-6.
Rear and Left-Side Components, HP Compaq nx4820 and
Compaq Presario V2400
1–16Maintenance and Service Guide
Product Description
Tabl e 1-6
Rear and Left-Side Components
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1Exhaust ventProvide airflow to cool internal components.
To prevent overheating, do not
Ä
obstruct vents. Do not allow a hard
surface, such as a printer, or a soft
surface, such as pillows, thick rugs
or clothing, to block airflow.
2Power connectorConnects an AC adapter cable.
3External monitor portConnects an optional VGA external monitor
or projector.
4Expansion portConnects the computer to an optional
expansion base.
5RJ-45 (network) jackConnects an optional network cable.
6RJ-11 (modem) jackConnects the modem cable.
7USB connectorConnects an optional USB device.
8PC Card slotSupports an optional Type I or Type II 32-bit
(CardBus) or 16-bit PC Card.
9PC Card eject buttonEjects an optional PC Card from the
PC Card slot.
10Security cable slotAttaches an optional security cable to the
computer.
Maintenance and Service Guide1–17
Product Description
The keyboard components on the HP Pavilion dv1400 are shown
below and described in Table 1-7.
Keyboard Components, HP Pavilion dv1400
1–18Maintenance and Service Guide
Product Description
Table 1-7
Keyboard Components
HP Pavilion dv1400
ItemComponentFunction
1fnkeyCombines with other keys to perform
system tasks. For example, pressing
fn+f7 decreases screen brightness.
2caps lock keyEnables caps lock and turns on the
caps lock light.
3f1 to f12 keys (12)Perform system and application tasks.
When combined with the fn key, several
keys and buttons perform additional tasks
as hotkeys.
4num lock keyEnables numeric lock, turns on the
embedded numeric keypad, and turns
on the num lock light.
5Keypad keys (15)In Windows, can be used like the keys
on an external numeric keypad.
6Arrow keysMove the cursor around the screen.
7Windows
applications key
8Windows logo keyIn Windows, displays the Windows
Maintenance and Service Guide1–19
In Windows, displays a shortcut menu
for items beneath the pointer.
Start menu.
Product Description
The keyboard components on the HP Compaq nx4820 and
Compaq Presario V2400 are shown below and described in
Table 1-8.
Keyboard Components, HP Compaq nx4820 and
Compaq Presario V2400
1–20Maintenance and Service Guide
Product Description
Table 1-8
Keyboard Components
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1fnkeyCombines with other keys to perform
system tasks. For example, pressing
fn+f7 decreases screen brightness.
2caps lock keyEnables caps lock and turns on the
caps lock light.
3f1 to f12 keys (12)Perform system and application tasks.
When combined with the fn key, several
keys and buttons perform additional tasks
as hotkeys.
4num lock keyEnables numeric lock, turns on the
embedded numeric keypad, and turns
on the num lock light.
5Keypad keys (15)In Windows, can be used like the keys
on an external numeric keypad.
6Arrows keysMove the cursor around the screen.
7Windows
applications key
8Windows logo keyIn Windows, displays the Windows
Maintenance and Service Guide1–21
In Windows, displays a shortcut menu
for items beneath the pointer.
Start menu.
Product Description
The top components on the HP Pavilion dv1400 are shown below
and described in Table 1-9.
Top Components, Part 1, HP Pavilion dv1400
Tabl e 1-9
Top Components, Part 1
HP Pavilion dv1400
ItemComponentFunction
1Display switchIf the computer is closed while on, turns off
the display.
2Power buttonWhen the computer is
■ Off, press to turn on the computer.
■ On, briefly press to initiate Hibernation.
■ In Standby, briefly press to resume
from Standby.
■ In Hibernation, briefly press to restore
from Hibernation.
1–22Maintenance and Service Guide
Tabl e 1-9
Top Components, Part 1
Product Description
HP Pavilion dv1400
ItemComponentFunction
3DVD buttonWhen the computer is
■ Off, opens QuickPlay DVD mode.
■ On in Windows, opens the default
■ On in QuickPlay music mode, opens
■ On in QuickPlay DVD mode, displays
■ In Standby, resumes from Standby
■ In Hibernation, opens QuickPlay
4Music buttonWhen the computer is
■ Off, opens QuickPlay music mode.
■ On in Windows, opens the default
■ On in QuickPlay DVD mode, opens
■ In Standby, resumes from Standby
■ In Hibernation, opens QuickPlay
(Continued)
Windows DVD application.
QuickPlay DVD mode.
the DVD setup menu.
into Windows.
DVD mode.
Windows music application.
QuickPlay music mode.
into Windows.
music mode.
5Previous/Rewind
Button
6Play/Pause buttonWhen a disc is in the optical drive and is:
Maintenance and Service Guide1–23
When a disc is in the optical drive:
■ Press to play the previous track
or chapter.
■ Press fn+this button to rewind.
■ Not playing, press to play the disc.
■ Playing, press to pause the disc.
Product Description
The top components on the HP Pavilion dv1400 are shown below
and described in Table 1-10.
Top Components, Part 2, HP Pavilion dv1400
1–24Maintenance and Service Guide
Table 1-10
Top Components, Part 2
HP Pavilion dv1400
ItemComponentFunction
Product Description
1Next/Fast Forward
button
2Stop buttonWhen a disc is in the optical drive, press
3Volume down buttonDecreases system volume.
4Volume mute button
Mute light
5Volume up buttonIncreases system volume.
6Wireless buttonEnables/disables an internal wireless
When a disc is in the optical drive:
■ Press once to play the next track
or chapter.
■ Press fn+this button to fast forward.
to stop the current disc activity.
Mutes or restores volume.
On: Volume is muted.
device.
Maintenance and Service Guide1–25
Product Description
The top components on the HP Pavilion dv1400 are shown below
and described in Table 1-11.
Top Components, Part 3, HP Pavilion dv1400
1–26Maintenance and Service Guide
Product Description
Table 1-11
Top Components, Part 3
HP Pavilion dv1400
ItemComponentFunction
1TouchPadMoves the pointer.
2TouchPad lightOn: TouchPad is enabled.
3Caps lock lightOn: Caps lock is on.
4Power/ button light■ On: Computer is turned on.
■ Blinking: Computer is in standby.
■ Off: Computer is off.
5Wireless lightOn: an integrated wireless device is
hardware enabled.
6Num lock lightOn: Num lock or the internal keypad is on.
7Back button■ In Windows, emulates the “back” function
of the alt+left arrow command in the
active application.
■ In QuickPlay, moves up one directory
level in an on-screen menu.
8OK buttonSelects an item you have chosen on the
screen.
9TouchPad on/off
button
10TouchPad vertical
scroll region
11Left and right
TouchPad buttons
Maintenance and Service Guide1–27
Enables/disables the TouchPad.
Scrolls upward or downward.
Function like the left and right buttons on
an external mouse.
Product Description
The top components on the HP Compaq nx4820 and Compaq
Presario V2400 are shown below and described in Table 1-12.
Top Components, Part 1, HP Compaq nx4820 and
Compaq Presario V2400
Table 1-12
Top Components, Part 1
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1Caps lock lightOn: Caps lock is on.
2Display switchIf the computer is closed while on, turns off
the display.
1–28Maintenance and Service Guide
Table 1-12
Top Components, Part 1
Product Description
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
3Wireless buttonEnables/disables an internal wireless
device.
Wireless lightOn: an integrated wireless device is
hardware enabled.
4Power buttonWhen the computer is
■ Off, press to turn on the computer.
■ On, briefly press to initiate Hibernation.
■ In Standby, briefly press to resume
from Standby.
■ In Hibernation, briefly press to restore
from Hibernation.
Powe r light■ On: Computer is turned on.
■ Blinking: Computer is in standby.
■ Off: Computer is off.
5Volume down buttonDecreases system volume.
6Volume mute buttonMutes or restores volume.
Mute lightOn: Volume is muted.
7Volume up buttonIncreases system volume.
(Continued)
8Num lock lightOn: Num lock or the internal keypad is on.
Maintenance and Service Guide1–29
Product Description
The top components on the HP Compaq nx4820 and Compaq
Presario V2400 are shown below and described in Table 1-13.
Top Components, Part 2, HP Compaq nx4820 and
Compaq Presario V2400
1–30Maintenance and Service Guide
Table 1-13
Top Components, Part 2
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
Product Description
1TouchPad horizontal
scrolling region
2TouchPadMoves the pointer.
3TouchPad lightOn: TouchPad is enabled.
4TouchPad on/off
button
5TouchPad vertical
scroll region
6Left and right
TouchPad buttons
Scrolls toward left side or right side.
Enables/disables the TouchPad.
Scrolls upward or downward.
Function like the left and right buttons on an
external mouse.
Maintenance and Service Guide1–31
Product Description
The external components on the bottom of the HP Pavilion
dv1400 are shown below and described in Table 1-14.
Bottom Components, HP Pavilion dv1400
Table 1-14
Bottom Components
HP Pavilion dv1400
ItemComponentFunction
1Optical driveSupports an optical disc.
2Battery pack release latchReleases a battery pack from the
battery bay.
3Battery packHolds a battery pack.
1–32Maintenance and Service Guide
Table 1-14
Bottom Components
Product Description
HP Pavilion dv1400
ItemComponentFunction
4Exhaust vents (4)Provide airflow to cool internal
5Hard drive bayHolds the internal hard drive.
6Mini PCI compartmentHolds an optional wireless LAN device.
7Memory module
compartment
8Label areas (2)Contain the computer serial number
(Continued)
components.
To prevent overheating, do not
Ä
obstruct vents. Do not allow a
hard surface, such as a printer,
or a soft surface, such as pillows,
thick rugs or clothing, to block
airflow.
To prevent an unresponsive
Ä
system and the display of a
warning message, install only a
Mini PCI device authorized for
use in your computer by the
governmental agency that
regulates wireless devices in your
country. If you install a device and
then receive a warning message,
remove the device to restore
computer functionality. Then
contact Customer Care.
Contains two memory slots that support
replaceable memory modules. The
number of preinstalled memory
modules varies by computer model.
and other applicable regulatory labels.
Maintenance and Service Guide1–33
Product Description
The external components on the bottom of the HP Compaq
nx4820 and Compaq Presario V2400 are shown below and
described in Table 1-15.
Bottom Components, HP Compaq nx4820 and
Compaq Presario V2400
Table 1-15
Bottom Components
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
1Optical driveSupports an optical disc.
2Battery pack release latchReleases a battery pack from the
battery bay.
3Battery packHolds a battery pack.
1–34Maintenance and Service Guide
Table 1-15
Bottom Components
Product Description
HP Compaq nx4820 and Compaq Presario V2400
ItemComponentFunction
4Exhaust vents (4)Provide airflow to cool internal
components.
To prevent overheating, do not
Ä
obstruct vents. Do not allow a
hard surface, such as a printer,
or a soft surface, such as pillows,
thick rugs or clothing, to block
airflow.
5Hard drive bayHolds the internal hard drive.
6Mini PCI compartmentHolds an optional wireless LAN device.
To prevent an unresponsive
Ä
system and the display of a
warning message, install only a
Mini PCI device authorized for
use in your computer by the
governmental agency that
regulates wireless devices in your
country. If you install a device and
then receive a warning message,
remove the device to restore
computer functionality. Then
contact Customer Care.
7Memory module
compartment
8Label areas (2)Contain the computer serial number
Contains 2 memory slots that support
replaceable memory modules. The
number of preinstalled memory
modules varies by computer model.
and other applicable regulatory labels.
(Continued)
Maintenance and Service Guide1–35
Product Description
1.5Design Overview
This section presents a design overview of key parts and features
of the computer. Refer to Chapter 3, “Illustrated Parts Catalog,”
to identify replacement parts, and Chapter 5, “Removal and
Replacement Procedures,” for disassembly steps.
The system board provides the following device connections:
■ Memory module
■ Mini PCI communications devices
■ Hard drive
■ Display
■ Keyboard and TouchPad
■ Audio
■ Intel Pentium M and Celeron M processors
■ Fan
■ PC Card
CAUTION: To properly ventilate the computer, allow at least a 7.6-cm
Ä
(3-inch) clearance on the left and right sides of the computer.
The computer uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to be turned
on automatically when high temperature conditions exist. These
conditions are affected by high external temperatures, system
power consumption, power management/battery conservation
configurations, battery fast charging, and software applications.
Exhaust air is displaced through the ventilation grill located on
the left side of the computer.
1–36Maintenance and Service Guide
Troubleshooting
WARNING: Only authorized technicians trained by HP should repair
Å
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, do not attempt
to make repairs at the component level or modifications to any printed
wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board
modification may void any warranty or exchange allowances.
2.1 Computer Setup
Computer Setup is a preinstalled, ROM-based utility that can be
used even when the operating system is not working or will not
load. If the operating system is working, the computer restarts the
operating system after you exit Computer Setup.
Pointing devices are not supported in Computer Setup; you
✎
must use the keyboard to navigate and make selections.
2
The menu tables later in this chapter provide an overview of
Computer Setup options.
Maintenance and Service Guide2–1
Troubleshooting
Accessing Computer Setup
The information and settings in Computer Setup are accessed
from the File, Security, Tools, and Advanced menus.
1. Open Computer Setup by turning on or restarting the
computer. Press
displayed in the lower-left corner of the screen.
❏ To change the language, press f2.
❏ To view navigation information, press f1.
❏ To return to the Computer Setup menu, press esc.
2. Select the File, Security, Tools, or Advanced menu.
3. To exit Computer Setup, choose one of the following:
❏ To exit without saving any changes, use the arrow keys
to select File > Ignore changes and exit, and then follow
the instructions on the screen.
❏ To exit and save all the settings you have entered, use the
arrow keys to select File > Save changes and exit, and
then follow the instructions on the screen.
Your preferences are set when you exit Computer Setup and go
into effect when the computer restarts.
f10 while the F10 = Based Setup message is
Computer Setup Defaults
To return all settings in Computer Setup to the values that were
set at the factory:
1. Open Computer Setup by turning on or restarting the
computer. Press
displayed in the lower-left corner of the screen.
❏ To change the language, press f2.
❏ To view navigation information, press f1.
2. Use the arrow keys to select File > Restore defaults.
3. Select the Restore Defaults check box.
2–2Maintenance and Service Guide
f10 while the F10 = Based Setup message is
Troubleshooting
4. To confirm the restoration, press f10.
5. Select File > Save changes and exit, and then follow the
instructions on the screen.
When the computer restarts, the factory settings are restored, and
any identification information you have entered is saved.
Selecting from the File Menu
Table 2 -1
File Menu
SelectTo Do This
System Information■ View identification information about the
computer and any battery packs in the system.
■ View specification information about the
processor, memory and cache size, video
revision, keyboard controller version, and
system ROM.
Save to floppySave system configuration settings to a diskette.
Restore to floppyRestore system configuration settings from
adiskette.
Restore defaultsReplace configuration settings in Computer Setup
with factory default settings. (Identification
information is retained.)
Ignore changes and exitCancel changes entered during the current
session. Then exit and restart the computer.
Save changes and exitSave changes entered during the current session.
Then exit and restart the computer. The changes
you save are to into effect when the computer
restarts.
Maintenance and Service Guide2–3
Troubleshooting
Selecting from the Security Menu
Table 2 -2
Security Menu
SelectTo Do This
Administrator passwordEnter, change, or delete an HP Administrator
password.
Power-on passwordEnter, change, or delete a power-on password.
DriveLock passwordsEnable/disable DriveLock; change a DriveLock
user or master password.
DriveLock Settings are accessible only
✎
when you enter Computer Setup by turning
on (not restarting) the computer.
Smart Card SecurityEnable/disable power-on support for smart cards.
This feature is supported by select smart
✎
card readers only.
Embedded Security■ Enable/Disable the embedded security chip.
■ Restore embedded security chip to factory
settings.
■ Enable/Disable power-on authentication
support.
■ Enable/Disable automatic DriveLock.
■ Reset power-on authentication credential
Embedded Security settings are accessible
✎
only if the computer is equipped with an
embedded security chip.
Device securityEnable/Disable devices in the system.
Enable NIC for inclusion in MultiBoot.
System IDsEnter user-defined identification values.
2–4Maintenance and Service Guide
Troubleshooting
Selecting from the Tools Menu
Table 2 -3
Tools M enu
SelectTo Do This
HDD Self Test optionsRun a quick or comprehensive self-test on any
hard drive in the system.
Battery InformationView information about any battery packs in the
computer.
Memory Check■ Run a self-test on memory modules in the
computer.
■ View information about memory modules
installed in the computer.
Maintenance and Service Guide2–5
Troubleshooting
Selecting from the Advanced Menu
Table 2 -4
Advanced Menu
SelectTo Do This
Language (or press f2)Change the Computer Setup language.
Boot options■ Enable/Disable MultiBoot, which sets a startup
sequence that can include most bootable
devices and media in the system.
■ Set the boot order.
Device options■ Swap the functions of the fn key and left ctrl
key.
■ Enable/Disable multiple pointing devices at
startup. (To set the computer to support only a
single, usually nonstandard, pointing device at
startup, select Disable.)
■ Enable/Disable USB legacy support for a USB
keyboard, mouse, and hub. When USB legacy
support is enabled
❐ A USB keyboard, mouse, and hub work
even when a Windows operating system
is not loaded.
❐ The computer starts from a bootable
hard drive, diskette drive diskette, or CD,
CD-RW, or DVD inserted into a drive
connected by a USB connector to the
computer or to an optional docking
device.
■ Select a parallel port mode: EPP (Enhanced
Parallel Port), standard, bidirectional, or ECP
(Enhanced Capabilities Port).
■ Enable/Disable all settings in the SpeedStep
window. (When Disable is selected, the
computer runs in Battery Optimized mode.)
*NOTE: Before beginning troubleshooting, always
check cable connections, cable ends, and drives
for bent or damaged pins.
Optical Drive.”
No OS loading from network,
Connection.”
Maintenance and Service Guide2–17
Troubleshooting
Flowchart 2.10—No OS Loading, Hard Drive,
Part 1
OS not
loading from
hard drive.
Nonsystem
disk message?
N
Reseat
external
hard drive.
OS loading?
N
Boot
from
CD?
Y
Check the setup
utility for correct
booting order.
Boot
from
hard drive?
Y
Done
Y
Go to
“Flowchart
2.11—No OS Loading, Hard Drive,
Part 2.”
Y
Done
N
N
Boot
from
diskette?
Y
N
Change boot
priority through
the setup utility
and reboot.
Go to
“Flowchart
2.13—No OS
Loading, Dis-
kette Drive.”
N
Boot
from
hard drive?
Go to
“Flowchart
2.17—Nonfunctioning Device.”
Y
2–18Maintenance and Service Guide
Troubleshooting
Flowchart 2.11—No OS Loading, Hard Drive,
Part 2
Continued from
“Flowchart
2.10—No OS
Loading,
Hard Drive, Part 1.”
Disc or
diskette in
drive?
Y
Remove disc or
diskette and
reboot.
N
1. Replace
hard drive.
2. Replace
system board.
N
Reseat
hard drive.
Hard drive
accessible?
Run FDISK.
Y
Done
N
from diskette
Y
Boot
from
hard drive?
Boot
drive?
Y
N
Done
Go to
“Flowchart
2.13—No OS
Loading, Dis-
kette Drive.”
Hard drive
partitioned?
Y
Hard drive
formatted?
Y
N
Create partition,
and then format
hard drive to boot-
able
C:\ prompt.
N
Format hard drive
and bring to
abootable
C:\ prompt.
N
Y
Computer
booted?
Load OS using Oper-
ating System disc (if
applicable).
Y
Hard drive
accessible?
Done
N
Go to
“Flowchart
2.12—No OS Loading, Hard Drive,
Part 3.”
Maintenance and Service Guide2–19
Go to
“Flowchart
2.12—No OS Loading, Hard Drive,
Par t 3.”
Troubleshooting
Flowchart 2.12—No OS Loading, Hard Drive,
Part 3
Continued from
“Flowchart
2.11—No OS Loading, Hard Drive,
Par t 2.”
N
System
files on hard
drive?
Y
Install OS
and reboot.
Virus
on
hard drive?
N
Run SCANDISK and
check for
bad sectors.
Can bad
sectors
be fixed?
Y
Fix bad
sectors.
Y
Clean virus.
loading from
hard drive?
Y
OS
Done
N
Y
Diagnostics on
disc or diskette?
Replace
hard drive.
N
N
Replace
hard drive.
Run diagnostics
and follow
recommendations.
N
Boot from
hard drive?
Replace
hard drive.
Y
Done
2–20Maintenance and Service Guide
Troubleshooting
N
N
Flowchart 2.13—No OS Loading, Diskette Drive
Y
OS not loading
from
diskette drive.
Reseat
diskette drive.
OS
loading?
Done
N
Nonsystem
disk message?
Y
Bootable
diskette
in drive?
N
Install bootable
diskette and
reboot computer.
Y
N
Boot
from another
device?
Y
Go to
“Flowchart
2.17—Nonfunctioning Device.”
N
Diskette
drive enabled
in the Setup
utility?
Enable drive
and cold boot
computer.
Y
Y
Reset the computer.
Is diskette
drive boot
order cor-
rect?
Refer to
Section 1.2,
“Resetting the
Computer,”
instructions.
for
Check diskette
for system files.
Try d iff er ent
diskette.
Nonsystem
disk error?
N
loading?
N
OS
Y
Replace the following
components
individually, retesting
after each
replacement:
■ Diskette drive
■ System board
Y
Done
Change boot
priority using
the setup utility.
Go to
“Flowchart
2.17—Nonfunctioning Device.”
Maintenance and Service Guide2–21
Troubleshooting
Flowchart 2.14—No OS Loading, Optical Drive
loading from
CD-ROM or
DVD-ROM drive.
Boots from
CD or DVD?
N
Reseat
No OS
drive.
N
bootable disc.
Disc
in drive?
Install
Y
Bootable
disc in
drive?
Y
Try another
bootable disc.
N
Install bootable
disc and
reboot
computer.
Y
Done
Y
Boots from
CD or DVD?
Done
N
N
Booting
from another
device?
Y
Go to
“Flowchart
2.17—Nonfunctioning Device.”
Reset the computer.
correct?
N
Correct boot
order using
the setup utility.
Booting
order
Y
Refer to
Section 1.2,
“Resetting the
Computer,”
instructions.
for
Go to
“Flowchart
2.17—Nonfunctioning
Device.”
2–22Maintenance and Service Guide
Flowchart 2.15—No Audio, Part 1
N
Turn up audio
No audio.
internally or
externally.
Audio?Done
N
Troubleshooting
Y
Computer in
docking device
(if applicable)?
Y
Undock
Internal
audio?
N
Go to
“Flowchart
2.16—No Audio,
Par t 2.”
Y
Go to
“Flowchart
2.16—No Audio,
Par t 2.”
Replace the following docking device components one at a time, as applicable. Check
audio status after each change.
1. Reseat docking device audio cable.
2. Replace audio cable.
3. Replace speaker.
4. Replace docking device audio board.
5. Replace backplane board.
6. Replace I/O board.
Y
Go to
“Flowchart
2.17—Nonfunctioning
Device.”
Audio?Done
N
Maintenance and Service Guide2–23
Troubleshooting
Flowchart 2.16—No Audio, Part 2
Continued from
“Flowchart
2.15—No Audio,
Part 1.”
N
Audio
driver in OS
configured?
Y
N
Correct
drivers for
application?
Y
Connect to
external
speaker.
Reload
audio drivers.
Load drivers and
set configuration
in OS.
Replace audio
board and
Audio?
YN
speaker
connections
in computer
(if applicable).
Audio?Done
Replace the following components
individually, retesting after each
replacement:
YN
■ Internal speakers.
■ Audio board (if applicable).
2–24Maintenance and Service Guide
Flowchart 2.17—Nonfunctioning Device
Nonfunctioning
device.
Reseat
device.
Unplug the nonfunctioning device from the computer
and inspect cables and plugs for bent or broken pins
Clear
CMOS.
Reattach device.
Close computer,
plug in power,
and reboot.
or other damage.
Any physical
device detected?
N
Replace hard drive.
Y
ing System (OS)
Troubleshooting
Fix or
replace
broken item.
Go to
“Flowchart
2.9—No Operat-
Loading.”
N
Device
boots
properly?
Replace NIC.
If integrated NIC,
replace system
board.
Y
Done
Maintenance and Service Guide2–25
Replace diskette
drive.
Device
boots
properly?
Y
Done
N
Troubleshooting
Flowchart 2.18—Nonfunctioning Keyboard
Keyboard
not operating prop-
erly.
Connect computer
to good external key-
board.
N
External
device
works?
Y
Reseat internal key-
board
connector
(if applicable).
Keyboard
operating
properly?
Y
DoneDone
Replace
system
board.
N
Replace internal
keyboard or
cable.
Y
Keyboard
operating
properly?
N
Replace
system
board.
2–26Maintenance and Service Guide
Troubleshooting
Flowchart 2.19—Nonfunctioning Pointing
Device
Pointing device
not operating
properly.
Connect computer
to good external
pointing device.
N
External
device
works?
Y
Reseat internal
pointing device
connector
(if applicable).
Replace
system
board.
N
Pointing device
operating
properly?
Replace internal
pointing device
or cable.
Y
Y
DoneDone
Pointing device
operating
properly?
N
Replace
system
board.
Maintenance and Service Guide2–27
Troubleshooting
Flowchart 2.20—No Network/Modem
Connection
No network
or modem connec-
tion.
N
Network
or modem jack
active?
Y
Digital
line?
N
Replace jack
or have jack acti-
vated.
Y
Connect
to nondigital
line.
Y
Done
Y
Disconnect all
the computer
NIC/modem
configured
in OS?
power from
and open.
N
drivers and recon-
Reload
figure.
Network
or modem connec-
tion working?
N
Replace
NIC/modem
(if applicable).
Y
Reseat NIC/modem
(if applicable).
Network
or modem connec-
tion working?
Done
N
Replace
system
board.
2–28Maintenance and Service Guide
Illustrated Parts Catalog
This chapter provides an illustrated parts breakdown and a
reference for spare part numbers and option part numbers.
Reference is made throughout this chapter to “Best Buy 1” and
✎
“Best Buy 2” computer models. These references apply to
HP Pavilion dv1400 models that are sold in Best Buy retail
stores that use plastic components with different colors.
3.1 Serial Number Location
When ordering parts or requesting information, provide the
computer serial number and model number located on the bottom
of the computer.
For use on HP Compaq nx4820 and Compaq
Presario V2400 models
For use on HP Pavilion dv1400 models382077-001
Maintenance and Service Guide3–3
382078-001
Illustrated Parts Catalog
Computer Major Components, HP Compaq nx4820 and
Compaq Presario V2400
3–4Maintenance and Service Guide
Table 3 -1
Illustrated Parts Catalog
Spare Parts: Computer Major Components
ItemDescription
2Switch covers (include wireless button and light)
For use on HP Pavilion dv1400 models with wireless
capability
For use on HP Pavilion dv1400 models without
wireless capability
For use on HP Compaq nx4820 and
Compaq Presario V2400 models with a 1394 port,
S-Video-out jack, expansion port, digital memory
card reader, with wireless capability
For use on HP Compaq nx4820 and
Compaq Presario V2400 models with a 1394 port,
S-Video-out jack, expansion port, and digital
memory card reader without wireless capability
For use on Best Buy 1 models399237-001
For use on Best Buy 2 models with wireless
capability
For use on Best Buy 2 models without wireless
capability
(Continued)
Spare Part
Number
367781-001
367780-001
367782-001
367779-001
409223-001
409224-001
Maintenance and Service Guide3–5
Illustrated Parts Catalog
Computer Major Components, HP Pavilion dv1400
3–6Maintenance and Service Guide
Table 3 -1
Illustrated Parts Catalog
Spare Parts: Computer Major Components
ItemDescription
3Keyboards
For use on HP Pavilion dv1400 models
Belgium
Brazil
Denmark
France
French Canada
Germany
Greece
Israel
International
Italy
Korea
Latin America
Europe and the
Australia,
Hong Kong,
People’s
Republic of
China, and the
United States
367777-001
Illustrated Parts Catalog
Computer Major Components, HP Compaq nx4820 and
Compaq Presario V2400
3–8Maintenance and Service Guide
Tabl e 3-1
Illustrated Parts Catalog
Spare Parts: Computer Major Components
ItemDescription
4LED boards (include cable, not illustrated)
For use on HP Pavilion dv1400 models367797-001
For use on HP Compaq nx4820 and
Compaq Presario V2400 models
5Top covers (include TouchPad)
For use on HP Pavilion dv1400 models394905-001
For use on HP Compaq nx4820 models406031-001
For use on full-featured Compaq Presario V2400
models
For use on defeatured Compaq Presario V2400
models
For use on Best Buy 1 models399234-001
For use on Best Buy 2 models409220-001
6Heat sink (includes thermal pad)395436-001
7Fan (includes thermal pad)367795-001
(Continued)
Spare Part
Number
367798-001
394906-001
404686-001
Maintenance and Service Guide3–9
Illustrated Parts Catalog
Computer Major Components, HP Pavilion dv1400
3–10Maintenance and Service Guide
Tabl e 3-1
Illustrated Parts Catalog
Spare Parts: Computer Major Components
ItemDescription
8Processors (include thermal pad)
Intel Pentium M 770 (2.13-GHz) with 400-MHz FSB
Intel Pentium M 760 (2.0-GHz) with 400-MHz FSB
Intel Pentium M 750 (1.8-GHz) with 400-MHz FSB
Intel Pentium M 740 (1.7-GHz) with 400-MHz FSB
Intel Pentium M 735a (1.7-GHz) with 400-MHz FSB
Intel Pentium M 730 (1.6-GHz) with 400-MHz FSB
Intel Pentium M 725 (1.6-GHz) with 400-MHz FSB
Intel Celeron M 380 (1.6-GHz) with 400-MHz FSB
Intel Celeron M 370 (1.4-GHz) with 400-MHz FSB
Intel Celeron M 360 (1.4-GHz) with 400-MHz FSB
Intel Celeron M 350 (1.3-GHz) with 400-MHz FSB
9System boards (include disk cell RTC battery)
915GM, for use on full-featured HP Pavilion dv1400
models
910GM, for use on defeatured HP Pavilion dv1400
models
915GM, for use on full-featured HP Compaq nx4820
and Compaq Presario V2400 models
910GM, for use on defeatured HP Compaq nx4820
and Compaq Presario V2400 models