HP Presario V2401 Maintenance And Service Manual

Maintenance and Service
Guide

HP Pavilion dv1400 Entertainment
Notebook PC

HP Compaq nx4820 Notebook PC

Compaq Presario V2400 Notebook PC

Document Part Number: 396166-002

November 2005

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.

© Copyright 2005 Hewlett-Packard Development Company, L.P.

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

Contents

1 Product Description

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

1.2 Resetting the Computer. . . . . . . . . . . . . . . . . . . . . . . 1–4

1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–6

1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–36

2 Troubleshooting

2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

Accessing Computer Setup . . . . . . . . . . . . . . . . . . . . 2–2

Computer Setup Defaults . . . . . . . . . . . . . . . . . . . . . 2–2

Selecting from the File Menu . . . . . . . . . . . . . . . . . . 2–3

Selecting from the Security Menu . . . . . . . . . . . . . . 2–4

Selecting from the Tools Menu. . . . . . . . . . . . . . . . . 2–5

Selecting from the Advanced Menu . . . . . . . . . . . . . 2–6

2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–7

Maintenance and Service Guide iii

Contents

3 Illustrated Parts Catalog

3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2

3.3 Miscellaneous Plastics Kit . . . . . . . . . . . . . . . . . . . 3–20

3.4 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–22

3.5 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–25

3.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–27

4 Removal and Replacement Preliminaries

4.1 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . 4–2

Plastic Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.3 Preventing Damage to Removable Drives . . . . . . . . 4–3

4.4 Preventing Electrostatic Damage . . . . . . . . . . . . . . . 4–4

4.5 Packaging and Transporting Precautions . . . . . . . . . 4–5

4.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 4–6

4.7 Grounding Equipment and Methods . . . . . . . . . . . . . 4–6

iv Maintenance and Service Guide

5 Removal and Replacement Procedures

5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–3

5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–5

5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11

5.6 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12

5.7 Mini PCI Communications Module . . . . . . . . . . . . 5–15

5.8 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18

5.9 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–20

5.10 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–26

5.11 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–32

5.12 Base Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–37

5.13 USB/S-Video Controller Board . . . . . . . . . . . . . . 5–44

5.14 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . 5–46

5.15 Speaker Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 5–48

5.16 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–50

5.17 Menu Control Button Board . . . . . . . . . . . . . . . . . 5–52

5.18 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55

5.19 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–57

5.20 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–59

5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–61

5.22 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–68

Contents

Maintenance and Service Guide v

Contents

6 Specifications

A Connector Pin Assignments

B Power Cord Set Requirements

C Screw Listing

D Display Component Recycling

Index

vi Maintenance and Service Guide

1

Product Description

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 Guide 1–1

Product Description

1.1 Features

■ 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

1–2 Maintenance 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 Guide 1–3

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.

1–4 Maintenance and Service Guide

1.3 Power 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 Guide 1–5

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

1–6 Maintenance and Service Guide

Product Description

Table 1 -1

Front Components

HP Pavilion dv1400

Item Component Function

1 Speakers (2) Produce stereo sound.

2Power light ■ On: Computer is turned on.

■ Blinking: Computer is in standby.

■ Off: Computer is off.

3 IDE (Integrated Drive

Electronics) drive light

4Battery light ■ Amber: The battery pack is charging.

5 Display release latch Opens 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 Guide 1–7

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

1–8 Maintenance and Service Guide

Table 1 -2

Front Components

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

1 Speakers (2) Produce stereo sound.

Product Description

2 Wireless button light

(select models only)

3Power light ■ On: Computer is turned on.

4 IDE (Integrated Drive

Electronics) drive light

5Battery light ■ Amber: The battery pack is charging.

6 Display release latch Opens 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 Guide 1–9

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

1–10 Maintenance and Service Guide

Product Description

Table 1 -3

Right-Side Components

HP Pavilion dv1400

Item Component Function

1 USB connectors (2) Connect an optional USB device.

2 6-in-1 Digital Media

Reader (select models
only)

3 1394 port

(select models only)

4 6-in-1 Digital Media

Reader light
(select models only)

5 Optical drive Supports 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 Guide 1–11

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

1–12 Maintenance and Service Guide

Product Description

Table 1 -4

Right-Side Components

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

1 USB connectors (2) Connect an optional USB device.

2 Digital memory card

reader
(select models only)

3 1394 port

(select models only)

4 Digital memory card

reader light
(select models only)

5 Optical drive Supports 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 Guide 1–13

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

1–14 Maintenance and Service Guide

Table 1 -5

Rear and Left-Side Components

HP Pavilion dv1400

Item Component Function

Product Description

1 Wireless light

(select models only)

2 Exhaust vent Provides airflow to cool internal

3 Power connector Connects an AC adapter cable.

4 External monitor port Connects an optional VGA external monitor

5 Expansion port Connects the computer to an optional

6 RJ-45 (network) jack Connects an optional network cable.

7 RJ-11 (modem) jack Connects the modem cable.

8 USB connector Connects an optional USB device.

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.

9 PC Card slot Supports an optional Type I or Type II 32-bit

10 PC Card eject button Ejects an optional PC Card from the

11 Security cable slot Attaches an optional security cable to the

Maintenance and Service Guide 1–15

(CardBus) or 16-bit PC Card.
Also serves as a storage location for the

optional HP Mobile Remote Control.

PC Card slot.

computer.

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

1–16 Maintenance and Service Guide

Product Description

Table 1 -6

Rear and Left-Side Components

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

1 Exhaust vent 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.

2 Power connector Connects an AC adapter cable.

3 External monitor port Connects an optional VGA external monitor

or projector.

4 Expansion port Connects the computer to an optional

expansion base.

5 RJ-45 (network) jack Connects an optional network cable.

6 RJ-11 (modem) jack Connects the modem cable.

7 USB connector Connects an optional USB device.

8 PC Card slot Supports an optional Type I or Type II 32-bit

(CardBus) or 16-bit PC Card.

9 PC Card eject button Ejects an optional PC Card from the

PC Card slot.

10 Security cable slot Attaches an optional security cable to the

computer.

Maintenance and Service Guide 1–17

Product Description

The keyboard components on the HP Pavilion dv1400 are shown
below and described in Table 1-7.

Keyboard Components, HP Pavilion dv1400

1–18 Maintenance and Service Guide

Product Description

Table 1-7

Keyboard Components

HP Pavilion dv1400

Item Component Function

1 fn key Combines with other keys to perform

system tasks. For example, pressing
fn+f7 decreases screen brightness.

2 caps lock key Enables caps lock and turns on the

caps lock light.

3 f1 to f12 keys (12) Perform system and application tasks.

When combined with the fn key, several
keys and buttons perform additional tasks
as hotkeys.

4 num lock key Enables numeric lock, turns on the

embedded numeric keypad, and turns
on the num lock light.

5 Keypad keys (15) In Windows, can be used like the keys

on an external numeric keypad.

6 Arrow keys Move the cursor around the screen.

7Windows

applications key

8 Windows logo key In Windows, displays the Windows

In Windows, displays a shortcut menu
for items beneath the pointer.

Start menu.

Maintenance and Service Guide 1–19

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

1–20 Maintenance and Service Guide

Product Description

Table 1-8

Keyboard Components

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

1 fn key Combines with other keys to perform

system tasks. For example, pressing
fn+f7 decreases screen brightness.

2 caps lock key Enables caps lock and turns on the

caps lock light.

3 f1 to f12 keys (12) Perform system and application tasks.

When combined with the fn key, several
keys and buttons perform additional tasks
as hotkeys.

4 num lock key Enables numeric lock, turns on the

embedded numeric keypad, and turns
on the num lock light.

5 Keypad keys (15) In Windows, can be used like the keys

on an external numeric keypad.

6 Arrows keys Move the cursor around the screen.

7Windows

applications key

8 Windows logo key In Windows, displays the Windows

In Windows, displays a shortcut menu
for items beneath the pointer.

Start menu.

Maintenance and Service Guide 1–21

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

Table 1 -9

Top Components, Part 1

HP Pavilion dv1400

Item Component Function

1 Display switch If the computer is closed while on, turns off

the display.

2 Power button When 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.

1–22 Maintenance and Service Guide

Table 1 -9

Top Components, Part 1

Product Description

HP Pavilion dv1400

Item Component Function

3 DVD button When the computer is

■ Off, opens QuickPlay DVD mode.

■ On in Windows, opens the default

Windows DVD application.

■ On in QuickPlay music mode, opens
QuickPlay DVD mode.

■ On in QuickPlay DVD mode, displays
the DVD setup menu.

■ In Standby, resumes from Standby
into Windows.

■ In Hibernation, opens QuickPlay
DVD mode.

4 Music button When the computer is

■ Off, opens QuickPlay music mode.

■ On in Windows, opens the default

Windows music application.

(Continued)

■ On in QuickPlay DVD mode, opens
QuickPlay music mode.

■ In Standby, resumes from Standby
into Windows.

■ In Hibernation, opens QuickPlay
music mode.

5 Previous/Rewind

Button

6 Play/Pause button When a disc is in the optical drive and is:

Maintenance and Service Guide 1–23

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

1–24 Maintenance and Service Guide

Table 1-10

Top Components, Part 2

HP Pavilion dv1400

Item Component Function

Product Description

1Next/Fast Forward

button

2 Stop button When a disc is in the optical drive, press

3 Volume down button Decreases system volume.

4 Volume mute button

Mute light

5 Volume up button Increases system volume.

6 Wireless button Enables/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 Guide 1–25

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

1–26 Maintenance and Service Guide

Product Description

Table 1-11

Top Components, Part 3

HP Pavilion dv1400

Item Component Function

1 TouchPad Moves the pointer.

2 TouchPad light On: TouchPad is enabled.

3 Caps lock light On: Caps lock is on.

4 Power/ button light ■ On: Computer is turned on.

■ Blinking: Computer is in standby.

■ Off: Computer is off.

5 Wireless light On: an integrated wireless device is

hardware enabled.

6 Num lock light On: Num lock or the internal keypad is on.

7 Back 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.

8 OK button Selects an item you have chosen on the

screen.

9 TouchPad on/off

button

10 TouchPad vertical

scroll region

11 Left and right

TouchPad buttons

Enables/disables the TouchPad.

Scrolls upward or downward.

Function like the left and right buttons on
an external mouse.

Maintenance and Service Guide 1–27

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

Item Component Function

1 Caps lock light On: Caps lock is on.

2 Display switch If the computer is closed while on, turns off

the display.

1–28 Maintenance and Service Guide

Table 1-12

Top Components, Part 1

Product Description

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

3 Wireless button Enables/disables an internal wireless

device.

Wireless light On: an integrated wireless device is

hardware enabled.

4 Power button When 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.

Power light ■ On: Computer is turned on.

■ Blinking: Computer is in standby.

■ Off: Computer is off.

(Continued)

5 Volume down button Decreases system volume.

6 Volume mute button Mutes or restores volume.

Mute light On: Volume is muted.

7 Volume up button Increases system volume.

8 Num lock light On: Num lock or the internal keypad is on.

Maintenance and Service Guide 1–29

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

1–30 Maintenance and Service Guide

Table 1-13

Top Components, Part 2

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

Product Description

1 TouchPad horizontal

scrolling region

2 TouchPad Moves the pointer.

3 TouchPad light On: TouchPad is enabled.

4 TouchPad on/off

button

5 TouchPad vertical

scroll region

6 Left 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 Guide 1–31

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

Item Component Function

1 Optical drive Supports an optical disc.

2 Battery pack release latch Releases a battery pack from the

battery bay.

3 Battery pack Holds a battery pack.

1–32 Maintenance and Service Guide

Table 1-14

Bottom Components

Product Description

HP Pavilion dv1400

Item Component Function

4 Exhaust vents (4) Provide airflow to cool internal

components.

Ä

5 Hard drive bay Holds the internal hard drive.

6 Mini PCI compartment Holds an optional wireless LAN device.

Ä

(Continued)

To prevent overheating, do not
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
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.

7 Memory module

compartment

8 Label areas (2) Contain the computer serial number

Maintenance and Service Guide 1–33

Contains two memory slots that support
replaceable memory modules. The
number of preinstalled memory
modules varies by computer model.

and other applicable regulatory labels.

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

Item Component Function

1 Optical drive Supports an optical disc.

2 Battery pack release latch Releases a battery pack from the

battery bay.

3 Battery pack Holds a battery pack.

1–34 Maintenance and Service Guide

Table 1-15

Bottom Components

Product Description

HP Compaq nx4820 and Compaq Presario V2400

Item Component Function

4 Exhaust 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.

5 Hard drive bay Holds the internal hard drive.

6 Mini PCI compartment Holds 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.

(Continued)

7 Memory module

compartment

8 Label areas (2) Contain the computer serial number

Maintenance and Service Guide 1–35

Contains 2 memory slots that support
replaceable memory modules. The
number of preinstalled memory
modules varies by computer model.

and other applicable regulatory labels.

Product Description

1.5 Design 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

Ä

■ Intel Pentium M and Celeron M processors

■ Fan

■ PC Card

CAUTION: To properly ventilate the computer, allow at least a 7.6-cm
(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.

1–36 Maintenance and Service Guide

Troubleshooting

WARNING: Only authorized technicians trained by HP should repair

Å

2.1 Computer Setup

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

✎

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.

The menu tables later in this chapter provide an overview of
Computer Setup options.

Maintenance and Service Guide 2–1

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.

f10 while the F10 = Based Setup message is

❏ 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.

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.

f10 while the F10 = Based Setup message is

3. Select the Restore Defaults check box.

2–2 Maintenance and Service Guide

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

Select To 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 floppy Save system configuration settings to a diskette.

Restore to floppy Restore system configuration settings from

adiskette.

Restore defaults Replace configuration settings in Computer Setup

with factory default settings. (Identification
information is retained.)

Ignore changes and exit Cancel changes entered during the current

session. Then exit and restart the computer.

Save changes and exit Save 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 Guide 2–3

Troubleshooting

Selecting from the Security Menu

Table 2-2

Security Menu

Select To Do This

Administrator password Enter, change, or delete an HP Administrator

password.

Power-on password Enter, change, or delete a power-on password.

Password options ■ Enable/Disable stringent security.

■ Enable/Disable required password on restart.

DriveLock passwords Enable/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 Security Enable/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 security Enable/Disable devices in the system.

Enable NIC for inclusion in MultiBoot.

System IDs Enter user-defined identification values.

2–4 Maintenance and Service Guide

Troubleshooting

Selecting from the Tools Menu

Table 2-3

Tools Menu

Select To Do This

HDD Self Test options Run a quick or comprehensive self-test on any

hard drive in the system.

Battery Information View 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 Guide 2–5

Troubleshooting

Selecting from the Advanced Menu

Table 2-4

Advanced Menu

Select To 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.)

2–6 Maintenance and Service Guide

2.2 Troubleshooting Flowcharts

Table 2 -5

Troubleshooting Flowcharts Overview

Flowchart Description

2.1 “Flowchart 2.1—Initial Troubleshooting”

2.2 “Flowchart 2.2—No Power, Part 1”

2.3 “Flowchart 2.3—No Power, Part 2”

2.4 “Flowchart 2.4—No Power, Part 3”

2.5 “Flowchart 2.5—No Power, Part 4”

2.6 “Flowchart 2.6—No Video, Part 1”

Troubleshooting

2.7 “Flowchart 2.7—No Video, Part 2”

2.8 “Flowchart 2.8—Nonfunctioning Docking Device (if applicable)”

2.9 “Flowchart 2.9—No Operating System (OS) Loading”

2.10 “Flowchart 2.10—No OS Loading, Hard Drive, Part 1”

2.11 “Flowchart 2.11—No OS Loading, Hard Drive, Part 2”

2.12 “Flowchart 2.12—No OS Loading, Hard Drive, Part 3”

2.13 “Flowchart 2.13—No OS Loading, Diskette Drive”

Maintenance and Service Guide 2–7

Troubleshooting

Table 2 -5

Troubleshooting Flowcharts Overview

Flowchart Description

2.14 “Flowchart 2.14—No OS Loading, Optical Drive”

2.15 “Flowchart 2.15—No Audio, Part 1”

2.16 “Flowchart 2.16—No Audio, Part 2”

2.17 “Flowchart 2.17—Nonfunctioning Device”

2.18 “Flowchart 2.18—Nonfunctioning Keyboard”

2.19 “Flowchart 2.19—Nonfunctioning Pointing Device”

2.20 “Flowchart 2.20—No Network/Modem Connection”

(Continued)

2–8 Maintenance and Service Guide

Flowchart 2.1—Initial Troubleshooting

Begin

troubleshooting.

N

Go to
Is there
power?

Y

N

Beeps,

LEDs, or error

messages?

Y

N

Is there video?

(no boot)

Y

N

Is the OS

loading?

Y

N

Is there

sound?

Y

“Flowchart

2.2—No Power,
Par t 1.”

Check

LED board,

speaker

connections.

Go to

“Flowchart

2.6—No Video,
Part 1.”

Go to

“Flowchart

2.9—No Operating
System (OS)

Loading.”

Go to

“Flowchart

2.15—No Audio,
Par t 1.”

N

All drives
working?

Y

N

Keyboard/

pointing

device work-

ing?

Y

N

Connecting

to network

or modem?

Y

End

Troubleshooting

Go to

“Flowchart

2.17—Nonfunc­tioning Device.”

Go to

“Flowchart

2.18—Nonfunc-

tioning Keyboard”

or “Flowchart

2.19—Nonfunc­tioning Pointing

Device.”

Go to

“Flowchart

2.20—No Net-

work/Modem Con-

nection.”

Maintenance and Service Guide 2–9

Troubleshooting

N

Flowchart 2.2—No Power, Part 1

No power

(power LED

is off).

Remove from

docking device

(if applicable).

N

Power up

on battery

power?

Reset

power.*

Y

N

Power up

on AC

power?

Reset

power.*

Y

Y

Power up in

docking
device?

1. Reseat the power cables in the docking
device and at the AC outlet.

2. Ensure the AC power source is active.

3. Ensure that the power strip is working.

Done

N

Power up

on battery

power?

Go to

“Flowchart

2.3—No Power,
Par t 2.”

Y

N

Power up

on AC power?

Go to

“Flowchart

2.4—No Power,
Part 3.”

Y

*NOTES

1. On select models, there is a separate
reset button.

2. On select models, the computer can be
reset using the standby switch and
either the lid switch or the main power
switch.

Done

YN

2–10 Maintenance and Service Guide

Power up

in docking

device?

Go to

“Flowchart

2.8—Nonfunction-

ing Docking Device

(if applicable).”

Flowchart 2.3—No Power, Part 2

N

Continued from

“Flowchart

2.2—No Power,
Par t 1.”

Visually check for

debris in battery

socket and clean

if necessary.

Y

Troubleshooting

Power on?

Check battery by

recharging it,

moving it to

another computer,

or replacing it.

Power on?

Y

Done

N

power supply

(if applicable).

Y

Done

Replace

Power on?

N

Go to

“Flowchart

2.4—No Power,
Part 3.”

Maintenance and Service Guide 2–11

Done

Troubleshooting

Flowchart 2.4—No Power, Part 3

Continued from

“Flowchart

2.3—No Power,
Part 2.”

Plug directly

into AC outlet.

Y

Power LED

on?

N

Reseat AC adapter

in computer and

at power source.

Power on?

N

Power outlet

active?

Y

Replace

power cord.

Y

N

Y

Done

Done

Try different

outlet.

Internal or

external AC

adapter?

Internal

Go to

“Flowchart

2.5—No Power,
Part 4.”

External

Replace external

AC adapter.

N

Power on?

Y

Power on?

N

2–12 Maintenance and Service Guide

Done

Done

Flowchart 2.5—No Power, Part 4

Continued from

“Flowchart

2.4—No Power,
Par t 3.”

Open

computer.

Y

Reseat loose

Loose or

damaged

parts?

N

components and

boards and

replace damaged

items.

Troubleshooting

computer and

Y

Close

retest.

Power on?

Done

N

Replace the following items (if applicable). Check
computer operation after each replacement:

1. Internal DC-DC converter*

2. Internal AC adapter

3. Processor board*

4. System board*

*NOTE: Replace these items as a set to prevent
shorting out among components.

Maintenance and Service Guide 2–13

Troubleshooting

Flowchart 2.6—No Video, Part 1

No video.

Docking Device

Stand-alone

or docking

device?

Go to

“Flowchart

2.7—No Video,
Part 2.”

*NOTE: To change from internal to
external display, use the hotkey.

Internal or

display*?

External

brightness.

Video OK? Done

N

Check for bent

pins on cable.

external

Adjust

Stand-alone

Internal

Y

Y

Adjust

brightness.

Video OK? Done

N

A

Press lid

switch to ensure

operation.

Y

Video OK? Done

N

Replace the following one at a time. Test after each replacement.

1. Cable between computer and computer display (if applicable)

2. Display

3. System board

N

Video OK?

YY

Done

2–14 Maintenance and Service Guide

Try
another
display.

Internal and

external

video OK?

Done

N

Replace

system

board.

Flowchart 2.7—No Video, Part 2

Continued from

“Flowchart

2.6—No Video,
Part 1.”

Remove

computer from dock-

ing device,

if connected.

Troubleshooting

Adjust

display

brightness.

N

Video OK?

Y

Check that computer is properly

seated in docking device,

for bent pins on cable,

and for monitor connection.

Y

Video OK?

Go to “A” in

“Flowchart

2.6—No Video,
Part 1.”

Done

Check brightness

of external

monitor.

Video OK?

N

Try another

external
monitor.

Internal

and external

video OK?

Y

Done

Y

Done

N

Adjust external

monitor display.

Maintenance and Service Guide 2–15

N

Go to

“Flowchart

2.8—Nonfunction-

ing Docking Device

(if applicable).”

Troubleshooting

Flowchart 2.8—Nonfunctioning Docking Device
(if applicable)

Nonfunctioning

docking device.

Reseat power

cord in docking

device and

power outlet.

Check voltage

setting on docking

device.

Reset monitor

cable connector at

docking device.

Docking

device

operating?

N

Remove computer,

replace docking

device.

Y

Done

Reinstall

computer into dock-

ing device.

Docking

device

operating?

N

Test replacement

docking device with

new computer.

Y

Done

2–16 Maintenance and Service Guide

Troubleshooting

Flowchart 2.9—No Operating System (OS)
Loading

No OS

loading.*

Reseat power

cord in docking

device and

power outlet.

No OS loading from hard drive,

“Flowchart 2.10—No OS Loading,

go to

Hard Drive, Part 1.”

No OS loading from diskette drive,

“Flowchart 2.13—No OS Loading, Dis-

go to

kette Drive.”

No OS loading from optical drive,

“Flowchart 2.14—No OS Loading,

go to

Optical Drive.”

No OS loading from network,

“Flowchart 2.20—No Network/Modem

go to

Connection.”

*NOTE: Before beginning troubleshooting, always
check cable connections, cable ends, and drives
for bent or damaged pins.

Maintenance and Service Guide 2–17

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.

Y

Y

N

Go to

“Flowchart

2.11—No OS Load­ing, Hard Drive,

Part 2.”

Done

Boot
from

diskette?

Y

N

Go to

“Flowchart

2.13—No OS
Loading, Dis-

kette Drive.”

N

Boot
from

hard drive?

Y

Done

2–18 Maintenance and Service Guide

Change boot
priority through
the setup utility

and reboot.

Boot
from

hard drive?

Y

N

Go to

“Flowchart

2.17—Nonfunction­ing Device.”

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

Boot

from

hard drive?

N

Boot

from diskette

drive?

Y

Hard drive

accessible?

Y

Go to

“Flowchart

2.12—No OS Load­ing, Hard Drive,

Part 3.”

Y

N

N

Done

Go to

“Flowchart

2.13—No OS
Loading, Dis-

kette Drive.”

Done

Hard drive

partitioned?

Y

Hard drive

formatted?

Y

Y

Computer

booted?

Go to

“Flowchart

2.12—No OS Load­ing, Hard Drive,

Par t 3.”

N

N

Create partition,
and then format

hard drive to boot-

able

C:\ prompt.

Format hard drive

and bring to

abootable

C:\ prompt.

Load OS using Oper-

ating System disc (if

applicable).

N

Maintenance and Service Guide 2–19

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

Virus

on

hard drive?

N

Run SCANDISK and

check for

bad sectors.

Can bad

sectors

be fixed?

Y

N

Clean virus.

Replace

hard drive.

Install OS

and reboot.

OS

loading from

hard drive?

N

Diagnostics on

disc or diskette?

N

Run diagnostics

and follow

recommendations.

Y

Done

Y

Replace

hard drive.

Y

Fix bad

sectors.

Y

2–20 Maintenance and Service Guide

Boot from

hard drive?

Done

N

Replace

hard drive.

Troubleshooting

N

N

Flowchart 2.13—No OS Loading, Diskette Drive

Y

OS not loading

diskette drive.

Nonsystem

disk message?

from another

Y

drive enabled

in the Setup

Y

from

Boot

device?

Diskette

utility?

Y

N

N

Reseat

diskette drive.

Go to

“Flowchart

2.17—Nonfunc­tioning Device.”

Enable drive

and cold boot

computer.

loading?

N

Bootable

diskette

in drive?

Y

Check diskette

for system files.

Try d i fferen t

diskette.

Nonsystem

disk error?

N

OS

N

Install bootable

diskette and

reboot computer.

Y

Replace the following
components
individually, retesting
after each
replacement:

■ Diskette drive

■ System board

Y

Done

Y

Is diskette

drive boot
order cor-

rect?

Change boot

priority using

the setup utility.

Maintenance and Service Guide 2–21

Reset the computer.

Refer to

Section 1.2,
“Resetting the
Computer,”

instructions.

“Flowchart

2.17—Nonfunction­ing Device.”

for

Go to

N

OS

loading?

Done

Troubleshooting

Flowchart 2.14—No OS Loading, Optical Drive

No OS

loading from

CD-ROM or

DVD-ROM drive.

Boots from

CD or DVD?

N

Reseat

drive.

Y

N

bootable disc.

Disc

in drive?

Install

Done

Boots from

CD or DVD?

Y

Y

Y

bootable disc.

Bootable

disc in

drive?

Try another

Done

N

Install bootable

disc and

reboot

computer.

N

Booting

from another

device?

Y

Booting

correct?

N

Correct boot

order using

the setup utility.

order

N

2.17—Nonfunction-

Reset the computer.

Y

Section 1.2,

“Resetting the

Computer,”

instructions.

Go to

“Flowchart

ing Device.”

Refer to

for

Go to

“Flowchart

2.17—Nonfunctioning
Device.”

2–22 Maintenance 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)?

Go to

“Flowchart

2.16—No Audio,
Par t 2.”

Y

Undock

Go to

“Flowchart

2.17—Nonfunctioning
Device.”

N

Internal

audio?

“Flowchart

2.16—No Audio,

Y

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

Audio? Done

N

Go to

Par t 2.”

Maintenance and Service Guide 2–23

Troubleshooting

Flowchart 2.16—No Audio, Part 2

Continued from

“Flowchart

2.15—No Audio,
Part 1.”

N

Audio
driver in OS
configured?

Reload

audio drivers.

Y

N

Correct

drivers for

application?

Load drivers and
set configuration

in OS.

Y

Connect to

external

speaker.

Replace audio

board and

Audio?

YN

speaker
connections
in computer

(if applicable).

Audio? Done

YN

2–24 Maintenance and Service Guide

Replace the following components
individually, retesting after each
replacement:

■ Internal speakers.

■ Audio board (if applicable).

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

or other damage.

Troubleshooting

CMOS.

Reattach device.
Close computer,

plug in power,

and reboot.

Device

boots

properly?

Y

Done

Clear

N

Any physical

device detected?

N

Replace hard drive.

Replace NIC.

If integrated NIC,

replace system

board.

Replace diskette

drive.

Y

Fix or

replace

broken item.

Go to

“Flowchart

2.9—No Operat­ing System (OS)

Loading.”

N

Device

boots

properly?

Y

Done

Maintenance and Service Guide 2–25

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

Done Done

Replace

system

board.

N

Replace internal

keyboard or

cable.

Y

Keyboard
operating
properly?

2–26 Maintenance and Service Guide

N

Replace

system

board.

Troubleshooting

Flowchart 2.19—Nonfunctioning Pointing
Device

Pointing device

not operating

properly.

Connect computer

to good external
pointing device.

N

Y

Reseat internal
pointing device

connector

(if applicable).

Pointing device

operating
properly?

Y

External

device

works?

Replace

system

board.

N

Replace internal

pointing device

or cable.

Y

Done Done

Pointing device

operating
properly?

N

Maintenance and Service Guide 2–27

Replace

system

board.

Troubleshooting

Flowchart 2.20—No Network/Modem
Connection

No network

or modem connec-

tion.

N

or modem jack

Y

N

NIC/modem

configured

Y

Disconnect all

power from

the computer

and open.

Network

active?

Digital

line?

in OS?

Replace jack

or have jack acti-

Y

to nondigital

N

drivers and recon-

vated.

Connect

line.

Reload

figure.

Network

or modem connec-

tion working?

N

Replace

NIC/modem

(if applicable).

Y

Done

Reseat NIC/modem

(if applicable).

2–28 Maintenance and Service Guide

Network

or modem connec-

tion working?

N

Replace

system

board.

Y

Done

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

✎

3.1 Serial Number Location

“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.

When ordering parts or requesting information, provide the
computer serial number and model number located on the bottom
of the computer.

3

Serial Number Location

Maintenance and Service Guide 3–1

Illustrated Parts Catalog

3.2 Computer Major Components

Computer Major Components, HP Pavilion dv1400

3–2 Maintenance and Service Guide

Illustrated Parts Catalog

Table 3 -1

Spare Parts: Computer Major Components

Spare Part

Item Description

1 Display assemblies (include wireless antenna transceivers

and cables)

For use on HP Pavilion dv1400 models

14.0-inch, WXGA, SVA with Brightview

14.0-inch, WXGA

For use on HP Compaq nx4820 models

14.0-inch, WXGA, SVA with Brightview

14.0-inch, WXGA

Number

373054-001
367783-001

373060-001
373528-001

For use on Compaq Presario V2400 models

14.0-inch, WXGA, SVA with Brightview

14.0-inch, WXGA

For use on Best Buy 1 models

14.0-inch, WXGA, SVA with Brightview 399232-001

For use on Best Buy 2 models

14.0-inch, WXGA, SVA with Brightview 409218-001

Left and right display hinge covers and brackets

For use on HP Pavilion dv1400 models 382077-001

For use on HP Compaq nx4820 and Compaq
Presario V2400 models

For use on HP Pavilion dv1400 models 382077-001

373055-001
367784-001

and
405290-001

382078-001

Maintenance and Service Guide 3–3

Illustrated Parts Catalog

Computer Major Components, HP Compaq nx4820 and

Compaq Presario V2400

3–4 Maintenance and Service Guide

Table 3-1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

2 Switch 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 models 399237-001

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 Guide 3–5

Illustrated Parts Catalog

Computer Major Components, HP Pavilion dv1400

3–6 Maintenance and Service Guide

Table 3-1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

3 Keyboards

For use on HP Pavilion dv1400 models

Belgium
Brazil
Denmark
France
French Canada
Germany
Greece
Israel
International
Italy
Korea
Latin America
Europe and the

Netherlands
Norway
Portugal

367778-A41
367778-201
367778-081
367778-051
367778-121
367778-041
367778-DJ1
367778-BB1
367778-B31
367778-061
367778-AD1
367778-161
367778-331

367778-091
367778-131

Saudi Arabia
Spain
Sweden/Finland
Switzerland
Ta iw an
Thailand
United Kingdom
Asia Pacific,

Australia,
Canada,
Hong Kong,
People’s
Republic
of China, and
the United
States

(Continued)

Spare Part
Number

367778-171
367778-071
367778-B71
367778-111
367778-AB1
367778-281
367778-031
367778-001

For use on HP Compaq nx4820 models

Japan 367777-291

For use on Compaq Presario V2400 models

Korea
Ta iw an
Thailand

Maintenance and Service Guide 3–7

367777-ad1
367777-AB1
367777-281

Asia Pacific,

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

3–8 Maintenance and Service Guide

Table 3 -1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

4 LED boards (include cable, not illustrated)

For use on HP Pavilion dv1400 models 367797-001

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

5 Top covers (include TouchPad)

For use on HP Pavilion dv1400 models 394905-001

For use on HP Compaq nx4820 models 406031-001

For use on full-featured Compaq Presario V2400
models

For use on defeatured Compaq Presario V2400
models

For use on Best Buy 1 models 399234-001

(Continued)

Spare Part
Number

367798-001

394906-001

404686-001

For use on Best Buy 2 models 409220-001

6 Heat sink (includes thermal pad) 395436-001

7 Fan (includes thermal pad) 367795-001

Maintenance and Service Guide 3–9

Illustrated Parts Catalog

Computer Major Components, HP Pavilion dv1400

3–10 Maintenance and Service Guide

Table 3 -1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

8 Processors (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

9 System boards (include disk cell RTC battery)

(Continued)

Spare Part
Number

394829-001
394828-001
394827-001
394826-001
397100-001
407315-001
394825-001

397344-001
383876-001
380033-001
380032-001

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

10 USB/S-Video controller board 367794-001

11 Menu control button board (includes bracket and

cable, for use on HP Pavilion dv1400 models)

393655-001

393656-001

395135-001

404608-001

373535-001

Maintenance and Service Guide 3–11

Illustrated Parts Catalog

Computer Major Components, HP Compaq nx4820 and

Compaq Presario V2400

3–12 Maintenance and Service Guide

Table 3 -1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

12 Speaker assemblies

For use on HP Pavilion dv1400 models 367793-001

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

13 Base enclosures

For use on HP Pavilion dv1400 models 367763-001

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

For use on Best Buy 1 models 399235-001

For use on Best Buy 2 models 409221-001

14 Battery packs

12-cell, 8.8-AHr 367760-001

(Continued)

Spare Part
Number

374625-001

367764-001

and
396603-001

6-cell, 4.4-AHr 367759-001

and
398832-001

6-cell, 4.0-AHr 398065-001

and
396602-001

Maintenance and Service Guide 3–13

Illustrated Parts Catalog

Computer Major Components, HP Pavilion dv1400

3–14 Maintenance and Service Guide

Table 3 -1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

15 Optical drives (include bezel)

For use on HP Pavilion dv1400 models
8X DVD-ROM Drive
24X DVD/CD-RW Combo Drive
8X DVD±RW/R and CD-RW Double Layer

Combo Drive
8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

8X DVD±RW/R and CD-RW Double Layer
Combo Drive

8X DVD±RW/R and CD-RW Double Layer
Combo Drive, LightScribe

(Continued)

Spare Part
Number

367789-001
367790-001
389896-001

394830-001

389897-001

394832-001

For use on Best Buy 1 models
8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

For use on Best Buy 2 models
8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

399233-001

399233-001

Maintenance and Service Guide 3–15

Illustrated Parts Catalog

Computer Major Components, HP Compaq nx4820 and

Compaq Presario V2400

3–16 Maintenance and Service Guide

Table 3-1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

16 Hard drives (include frame and connector)

5400-rpm

80-GB
60-GB
40-GB

4200-rpm

100-GB
80-GB
60-GB
40-GB

17 Mini PCI communications cards

802.11b/g Broadcomm (for use in most of the world)

802.11b/g Broadcomm (for use in the rest of the
world)

802.11b/g Broadcomm (for use on HP Compaq
nx4820 models in Japan)

(Continued)

Spare Part
Number

377651-001
375980-001
393659-001

381721-001
367788-001
367787-001
367786-001

373047-001
373048-001

373061-291

802.11b/g FRVL (for use in most of the world)

802.11b/g FRVL (for use in the rest of the world)

802.11b/g Intel (for use in most of the world)

802.11b/g Intel (for use in the rest of the world)

802.11b/g Titus (for use in the United States)

802.11b/g Titus (for use in the rest of the world)

802.11b/g Titus (for use in Japan)

Bluetooth module (not illustrated) 376651-001

Maintenance and Service Guide 3–17

390622-001
390622-002

373026-001
373025-001

392591-001
392591-002
392591-291

and
399777-001

Illustrated Parts Catalog

Computer Major Components, HP Pavilion dv1400

3–18 Maintenance and Service Guide

Table 3-1

Illustrated Parts Catalog

Spare Parts: Computer Major Components

Item Description

18 Memory modules (266 MHz)

1024-MB 367775-001

512-MB 367774-001

256-MB 367773-001

SC Card memory modules (not illustrated)

256-MB 403573-001

128-MB 403572-001

Miscellaneous Plastics Kit

For use on HP Pavilion dv1400 models 367765-001

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

(Continued)

Spare Part
Number

367766-001

19a
19b

19c

For use on Best Buy 1 models 399236-001

For use on Best Buy 2 models 409222-001

Includes:
Hard drive cover (includes two captive screws)
Memory module compartment cover (includes

2 captive screws)
Mini PCI compartment cover (includes 2 captive

screws)
Computer feet (not illustrated)

Maintenance and Service Guide 3–19

Illustrated Parts Catalog

3.3 Miscellaneous Plastics Kit

Miscellaneous Plastics Kit

3–20 Maintenance and Service Guide

Spare Part Number Information

Item Description

Miscellaneous Plastics Kit

For use on HP Pavilion dv1400 models 367765-001

Includes:
1a
2a
3a
4a

Mini PCI compartment cover

Memory module compartment cover

Computer feet (5)

Hard drive cover

Illustrated Parts Catalog

Table 3-2

Miscellaneous Plastics Kit

Spare Part
Number

1b
2b
3b
4b

For use on HP Compaq nx4820 and

Compaq Presario V2400 models

Includes:

Mini PCI compartment cover

Memory module compartment cover

Computer feet (4)

Hard drive cover

For use on Best Buy 1 models (not illustrated,

contains the same components as the

Miscellaneous Plastics Kits listed above)

For use on Best Buy 2 models (not illustrated,

contains the same components as the

Miscellaneous Plastics Kits listed above)

367766-001

399236-001

409222-001

Maintenance and Service Guide 3–21

Illustrated Parts Catalog

3.4 Mass Storage Devices

Mass Storage Devices

Table 3-3

Mass Storage Devices

Spare Part Number Information

Item Description

1 Hard drives (include frame and connector)

5400-rpm

80-GB

60-GB

40-GB

Spare Part
Number

377651-001
375980-001
393659-001

3–22 Maintenance and Service Guide

Table 3-3

Mass Storage Devices

Illustrated Parts Catalog

Spare Part Number Information

Item Description

1 Hard drives

4200-rpm

100-GB

80-GB

60-GB

40-GB

2 Optical drives

For use on HP Pavilion dv1400 models

8X DVD-ROM Drive

24X DVD/CD-RW Combo Drive

8X DVD±RW/R and CD-RW Double Layer

Combo Drive

8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

(Continued)

(Continued)

Spare Part
Number

381721-001
367788-001
367787-001
367786-001

367789-001
367790-001
389896-001

394830-001

For use on HP Compaq nx4820 and Compaq Presario V2400

models

8X DVD±RW/R and CD-RW Double Layer

Combo Drive

8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

For use on Best Buy 1 models

8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

For use on Best Buy 2 models

8X DVD±RW/R and CD-RW Double Layer

Combo Drive, LightScribe

USB digital drive (not illustrated) 364727-001

Maintenance and Service Guide 3–23

389897-001

394832-001

399233-001

399233-001

Illustrated Parts Catalog

Table 3-3

Mass Storage Devices

Spare Part Number Information

Item Description

HP USB pocket drive (not illustrated) 338796-001

(Continued)

Spare Part
Number

3–24 Maintenance and Service Guide

Illustrated Parts Catalog

3.5 Miscellaneous

Table 3 -4

Miscellaneous (not illustrated)

Spare Part Information

Spare Part

Description

Logo Kits

For use on HP Pavilion dv1400 models 373058-001

For use on HP Compaq nx4820 models 395199-001

For use on Compaq Presario V2400 models 373059-001

Number

Wired headset with volume control 371693-001

HP backpack 405527-001

HP remote control (for use on HP dv1400 models) 371694-001

USB travel mouse 309674-001

Notebook entertainment cable and Y-cable 379452-001

65-watt AC adapter 371790-001 and

403551-001

Screw Kit (includes the following screws; refer to Appendix C, “Screw Listing,”
for more information on screw specifications and usage)

For use on HP Pavilion dv1400 models 367776-001

For use on HP Compaq nx4820 and
Compaq Presario V2400 models

■ Phillips PM2.5×4.0 screw

■ Phillips PM2.0×7.0 round head screw

■ Phillips PM2.0×7.0 screw

■ Phillips PM2.0×4.0 screw

■ Phillips PM2.0×3.0 screw

■ Phillips PM1.5×2.0 screw

373534-001

■ Phillips PM2.0×5.0 screw

Maintenance and Service Guide 3–25

Illustrated Parts Catalog

Miscellaneous (not illustrated)

Table 3 -4

Spare Part Information

Description

Power cords

For use in:

Australia and New Zealand 373979-011

Brazil 373979-201

Belgium, Europe, Finland, France, Germany, Greece,
the Netherlands, Norway, Portugal, Spain, and Sweden

Canada, French Canada, Latin America, Thailand, and the
United States

Denmark 373979-081

Hong Kong and the United Kingdom 373979-031

India 373979-DJ1

Israel 373979-BB1

(Continued)

Spare Part
Number

373979-021

373979-001

Italy 373979-061

Japan 373979-291

Korea 373979-AD1

People’s Republic of China 373979-AA1

Switzerland 373979-111

Taiwan 373979-AB1

3–26 Maintenance and Service Guide

Illustrated Parts Catalog

3.6 Sequential Part Number Listing

Table 3-5

Sequential Spare Part Number Listing

Spare Part
Number Description

309674-001 USB travel mouse

364727-001 USB digital drive

367759-001 Battery pack, 6-cell, 4.4-AHr

367760-001 Battery pack, 12-cell, 8.8-AHr

367763-001 Base enclosure for use on HP Pavilion dv1400 models

367764-001 Base enclosure for use on HP Compaq nx4820 and

Compaq Presario V2400 models

367765-001 Miscellaneous Plastics Kit for use on HP Pavilion dv1400

models

367766-001 Miscellaneous Plastics Kit for use on HP Compaq nx4820 and

Compaq Presario V2400 models

367773-001 Memory module, 256-MB (266 MHz)

367774-001 Memory module, 512-MB (266 MHz)

367775-001 Memory module, 1024-MB (266 MHz)

367776-001 Screw Kit for use on HP Pavilion dv1400 models

367777-001 Keyboard for use on Compaq Presario V2400 models in Asia

Pacific, Australia, Hong Kong, People’s Republic of China,
and the United States

367777-281 Keyboard for use on Compaq Presario V2400 models

in Thailand

367777-291 Keyboard for use on HP Compaq nx4820 models in Japan

367777-AB1 Keyboard for use on Compaq Presario V2400 models

in Taiwan

Maintenance and Service Guide 3–27

Illustrated Parts Catalog

Table 3-5

Sequential Spare Part Number Listing

Spare Part
Number Description

367777-AD1 Keyboard for use on Compaq Presario V2400 models

in Korea

367778-001 Keyboard for use on HP Pavilion dv1400 models in Asia

Pacific, Australia, Canada, Hong Kong, People’s Republic
of China, and the United States

367778-031 Keyboard for use on HP Pavilion dv1400 models in

the United Kingdom

367778-041 Keyboard for use on HP Pavilion dv1400 models in Germany

367778-051 Keyboard for use on HP Pavilion dv1400 models in France

367778-061 Keyboard for use on HP Pavilion dv1400 models in Italy

367778-071 Keyboard for use on HP Pavilion dv1400 models in Spain

367778-081 Keyboard for use on HP Pavilion dv1400 models in Denmark

(Continued)

367778-091 Keyboard for use on HP Pavilion dv1400 models in Norway

367778-111 Keyboard for use on HP Pavilion dv1400 models

in Switzerland

367778-121 Keyboard for use on HP Pavilion dv1400 models

in French Canada

367778-131 Keyboard for use on HP Pavilion dv1400 models in Portugal

367778-161 Keyboard for use on HP Pavilion dv1400 models

in Latin America

367778-171 Keyboard for use on HP Pavilion dv1400 models

in Saudi Arabia

367778-201 Keyboard for use on HP Pavilion dv1400 models in Brazil

367778-281 Keyboard for use on HP Pavilion dv1400 models in Thailand

367778-331 Keyboard for use on HP Pavilion dv1400 models in Europe

and the Netherlands

3–28 Maintenance and Service Guide

Table 3-5

Illustrated Parts Catalog

Sequential Spare Part Number Listing

Spare Part
Number Description

367778-A41 Keyboard for use on HP Pavilion dv1400 models in Belgium

367778-AB1 Keyboard for use on HP Pavilion dv1400 models in Taiwan

367778-AD1 Keyboard for use on HP Pavilion dv1400 models in Korea

367778-B31 Keyboard for use on International HP Pavilion dv1400 models

367778-B71 Keyboard for use on HP Pavilion dv1400 models Finland

and Sweden

367778-BB1 Keyboard for use on HP Pavilion dv1400 models in Israel

367778-DJ1 Keyboard for use on HP Pavilion dv1400 models in Greece

367779-001 Switch cover for use on HP Compaq nx4820 and

Compaq Presario V2400 models with a 1394 port,
S-Video-out jack, expansion port, and Memory Reader without
wireless capability

(Continued)

367780-001 Switch cover for use on HP Pavilion dv1400 models without

wireless capability

367781-001 Switch cover for use on HP Pavilion dv1400 models with

wireless capability

367782-001 Switch cover for use on HP Compaq nx4820 and

Compaq Presario V2400 models with a 1394 port,
S-Video-out jack, expansion port, and Memory Reader
with wireless capability

367783-001 Display assembly, 14.0-inch, WXGA for use on HP Pavilion

dv1400 models

367784-001 Display assembly, 14.0-inch, WXGA for use on

Compaq Presario V2400 models

367786-001 Hard drive, 60-GB, 4200-rpm (includes frame and connector)

367787-001 Hard drive, 40-GB, 4200-rpm (includes frame and connector)

367788-001 Hard drive, 80-GB, 4200-rpm (includes frame and connector)

Maintenance and Service Guide 3–29

Illustrated Parts Catalog

Table 3-5

Sequential Spare Part Number Listing

Spare Part
Number Description

367789-001 8X DVD-ROM Drive for use on HP Pavilion dv1400 models

367790-001 24X DVD/CD-RW Combo Drive for use on HP Pavilion

dv1400 models

367793-001 Speaker assembly for use on HP Pavilion dv1400 models

367794-001 USB/S-Video controller board

367795-001 Fan (includes thermal pad)

367797-001 LED board for use on HP Pavilion dv1400 models (includes

LED board cable)

367798-001 LED board for use on HP Compaq nx4820 and

Compaq Presario V2400 models (includes LED board cable)

371693-001 Wired headset with volume control

371694-001 HP remote control (for use on HP dv1400 models)

(Continued)

371790-001 65-watt AC adapter

373025-001 Mini PCI communications card, 802.11b/g Intel for use in the

rest of the world

373026-001 Mini PCI communications card, 802.11b/g Intel for use in most

of the world

373047-001 Mini PCI communications card, 802.11b/g Broadcomm for use

in most of the world

373048-001 Mini PCI communications card, 802.11b/g Broadcomm for use

in the rest of the world

373054-001 Display assembly, 14.0-inch, WXGA, SVA with Brightview for

use on HP Pavilion dv1400 models

373055-001 Display assembly, 14.0-inch, WXGA, SVA with Brightview for

use on Compaq Presario V2400 models

373058-001 Logo Kit for use on HP Pavilion dv1400 models

3–30 Maintenance and Service Guide