HP Compaq Presario Manual

Maintenance and Service
Guide
HP Pavilion dv4000 Notebook PC
Compaq Presario V4000 Notebook PC
Document Part Number: 377367-003
October 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. SD Logo is a trademark of its
proprietor.
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 dv4000 Notebook PC
Compaq Presario V4000 Notebook PC
Third Edition October 2005
First Edition March 2005
Document Part Number: 377367-003

Maintenance and Service Guide iii
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. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–26
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

iv Maintenance and Service Guide
Contents
3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2
3.3 Display Assembly Subcomponents. . . . . . . . . . . . . 3–14
HP Pavilion dv4000 Models . . . . . . . . . . . . . . . . . . 3–14
3.4 Display Assembly Subcomponents. . . . . . . . . . . . . 3–16
Compaq Presario V4000 Models . . . . . . . . . . . . . . 3–16
3.5 Miscellaneous Doors/Covers Kit
Spare Part Information . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 3–20
3.7 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–22
3.8 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–24
3.9 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–26
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 . . . . . . . . . . . . . 4–7

Contents
Maintenance and Service Guide v
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 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–13
5.7 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–15
5.8 Mini PCI Communications Module . . . . . . . . . . . . 5–18
5.9 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–20
5.10 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–21
5.11 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24
5.12 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–26
5.13 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–29
5.14 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–34
5.15 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–50
5.16 Base Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–54
5.17 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–58
5.18 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–60
5.19 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–73
5.20 Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–76
5.21 USB Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–78
5.22 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . 5–81

vi Maintenance and Service Guide
Contents
6 Specifications
A Connector Pin Assignments
B Power Cord Set Requirements
C Screw Listing
D Display Component Recycling
Index

Maintenance and Service Guide 1–1
1
Product Description
The HP Pavilion dv4000 Notebook PC 1and Compaq
Presario V4000 Notebook PC 2offer advanced modularity,
Intel® Pentium® M and Celeron® M processors, and extensive
multimedia support.
HP Pavilion dv4000 Notebook PC and Compaq Presario V4000
Notebook PC

1–2 Maintenance and Service Guide
Product Description
1.1 Features
■Intel Pentium M 2.00-, 1.73-, 1.60-, or 1.50-GHz processors,
or Intel Celeron M 1.50-, 1.40-, or 1.30-GHz processors,
varying by computer model
■15.4-inch, WXGA, TFT (1280 × 800) with BrightView
display, or 15.4-inch, WXGA, TFT (1280 × 800) display,
varying by computer model
■100-, 80-, 60-, or 40-GB high-capacity hard drive, varying by
computer model
■256-MB DDR synchronous DRAM (SDRAM) at 333 MHz,
expandable to 2.0 GB
■Microsoft® Windows® XP Home Edition or Windows XP
Professional, varying by computer model
■Full-size Windows keyboard with embedded numeric keypad
■TouchPad pointing device, including dedicated horizontal
(Compaq Presario V4000 models) and vertical scroll regions
■Integrated 10Base-T/100Base-TX Ethernet local area
network (LAN) network interface card (NIC) with RJ-45 jack
■Integrated high-speed 56K modem with RJ-11 jack
■Integrated wireless support for Mini PCI IEEE 802.11b/g
WLAN device (select models only)
■Support for one Type I or Type II PC Card slot, with support
for both 32-bit (CardBus) and 16-bit PC Cards
■Support for ExpressCard slot
■External 65-watt AC adapter with 3-wire power cord
■12- or 6-cell Li-Ion battery pack, varying by computer model
■Stereo speakers
■Volume up, volume mute, and volume down buttons
■QuickPlay buttons (select models only)
■Support for the following optical drives:
❏DVD±RW and CD-RW Combo Drive
❏DVD/CD-RW Combo Drive

Product Description
Maintenance and Service Guide 1–3
✎Numerous references are made throughout this Maintenance and
Service Guide to “full-featured” and “defeatured” models.
A model is considered to be full-featured if it has 4 Universal
Serial Bus ports and the following components:
■Digital Media Slot/Memory Reader
■Expansion port
■ExpressCard slot
■IEEE 1394 port
■Infrared port
■Quick Launch buttons (HP Pavilion dv4000 models only)
A computer model is considered to be defeatured if it has only
2 Universal Serial Bus ports and none of the components listed
above.
■Connectors:
❏Audio-in (microphone)
❏Audio-out (headphone)
❏Digital Media Slot (full-featured models only)
❏Expansion port (full-featured models only)
❏ExpressCard slot (full-featured models only)
❏External monitor
❏IEEE 1394 (full-featured models only)
❏Infrared (full-featured models only)
❏PC Card
❏Power
❏Primary battery
❏RJ-11 (modem)
❏RJ-45 (network)
❏S-Video-out
❏Serial port (full-featured models only)
❏Smart card
❏Universal Serial Bus (USB) v. 2.0 (4 ports on full-featured
models, 2 ports on defeatured models)

1–4 Maintenance and Service Guide
Product Description
1.2 Resetting the Computer
If the computer you are servicing has an unknown password,
follow these steps to set a new password. These steps also
clear CMOS:
1. Enter an incorrect password and press enter.
2. Repeat step 1 two more times.
After the third entry of the incorrect password, the computer
responds with a “System Disabled” message and provides an
override password.
3. On another computer running Windows XP, download the
unlock6.exe utility from the HP Channel Services Network
(CSN) Web site at http://www.hp.com/partners/csn. Copy the
unlock6.exe utility into the root directory (C:\ drive).
4. Access MS-DOS by clicking Start > All Programs >
Accessories > Command Prompt.
5. Enter unlock6 xxxxx 0, where “xxxxx” is the password
generated by the computer in step 2.
The computer responds with another system-generated
password.
6. Enter the password generated in step 5 on the disabled
computer to enter the system BIOS. In the BIOS, navigate
to the Security tab and Administrator Password. Enter the
password generated in step 5 as the current password. Enter
a new password to change it.
7. The password has been reset and all CMOS settings have
been cleared.

Product Description
Maintenance and Service Guide 1–5
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

1–6 Maintenance and Service Guide
Product Description
1.4 External Components
The external components on the front of the computer are shown
below and described in Table 1-1. Depending on your computer
model, component locations may vary.
Front Components

Product Description
Maintenance and Service Guide 1–7
Table 1-1
Front Components
Item Component Function
1Powerlight ■On: Computer is turned on.
■Blinking: Computer is in standby.
■Off: Computer is off or in hibernation.
2Batterylight ■On: The battery pack is charging.
■Blinking: The battery pack has reached a
low-battery condition.
■Off: The battery pack is fully charged or
not inserted.
3 Integrated Drive
Electronics (IDE)
drive light
On or blinking: The internal hard drive or an
optical drive is being accessed.
4 Consumer infrared
(IR) lens (select
models only)
Links the computer to an optional remote
control.
5 Speakers Produce stereo sound.
6 Display release button Opens the computer.

1–8 Maintenance and Service Guide
Product Description
The external components on the right side of the HP Pavilion
dv4000 are shown below and described in Table 1-2. Depending
on your computer model, component locations may vary.
Right-Side Components, HP Pavilion dv4000

Product Description
Maintenance and Service Guide 1–9
Table 1-2
Right-Side Components, HP Pavilion dv4000
Item Component Function
1 Optical drive Supports an optical disc, such as a CD
or DVD.
2Audio-out
(headphone) jack
(full-featured
models only)
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
3 Audio-in (microphone)
jack (full-featured
models only)
Connects an optional stereo microphone.
4 USB ports
(full-featured
models only)
Connect optional USB devices.
✎Number of USB ports vary by model.
5 Monitor port
(full-featured
models only)
Connects an optional VGA monitor or
projector.
6S-Video-outjack
(full-featured
models only)
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
7 Security cable slot Attaches an optional security cable to the
computer.
✎The purpose of security solutions is to act as a deterrent. These
solutions do not prevent the product from being mishandled or
stolen.

1–10 Maintenance and Service Guide
Product Description
The external components on the right side of the
Compaq Presario V4000 are shown below and described
in Table 1-3. Depending on your computer model, component
locations may vary.
Right-Side Components, Compaq Presario V4000

Product Description
Maintenance and Service Guide 1–11
Table 1-3
Right-Side Components, Compaq Presario V4000
Item Component Function
1 Optical drive Supports an optical disc, such as a CD
or DVD.
2 Audio-out (headphone)
jack (full-featured
models only)
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
3 Audio-in (microphone)
jack (full-featured
models only)
Connects an optional stereo microphone.
4 USB ports
(full-featured
models only)
Connect optional USB devices.
✎Number of USB ports vary by model.
5 Monitor port
(full-featured
models only)
Connects an optional VGA monitor or
projector.
6 S-Video-out jack
(full-featured
models only)
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
7 Security cable slot Attaches an optional security cable to the
computer.
✎The purpose of security solutions is to act as a deterrent. These
solutions do not prevent the product from being mishandled or
stolen.

1–12 Maintenance and Service Guide
Product Description
The external components on the left side of the HP Pavilion
dv4000 are shown below and described in Table 1-4. Depending
on your computer model, component locations may vary.
Left-Side Components, HP Pavilion dv4000
Table 1-4
Left-Side Components, HP Pavilion dv4000
Item Component Function
1 Power connector Connects the AC adapter cable.
2 RJ-11 (modem) jack Connects a modem cable (not included).
3 RJ-45 (network) jack Connects a network cable (not included).
4 Expansion port 2
(full-featured
models only)
Connects the computer to an optional
docking device.
✎The computer has only one expansion port. The term
expansion port 2 describes the type of expansion port.
5 USB ports Connect optional USB devices.

Product Description
Maintenance and Service Guide 1–13
6 1394 port (4-pin;
full-featured
models only)
Connects an optional 1394a device such as
a scanner, a digital camera, or a digital
camcorder.
7 Digital Media Slot
(full-featured
models only)
Supports the following optional digital
cards: SD (Secure Digital) Memory Card,
SD I/O Card, Memory Stick, Memory Stick
Pro, MultiMediaCard, xD-Picture Card, and
SmartMedia.
8 Digital Media Slot
light (full-featured
models only)
On: An optional digital card is being
accessed.
9 ExpressCard slot
(full-featured
models only)
Supports an optional ExpressCard.
10 PC Card slot Supports an optional Type I or Type II 32-bit
(CardBus) or 16-bit PC Card.
11 PC Card eject button Ejects PC Cards from the PC Card slot.
12 Monitor port
(full-featured
models only)
Connects an optional VGA monitor or
projector.
13 S-Video-out jack
(full-featured
models only)
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
14 Audio-in (microphone)
jack (full-featured
models only)
Connects an optional stereo microphone.
15 Audio-out (headphone)
jack (defeatured
models only)
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
Table 1-4
Left-Side Components, HP Pavilion dv4000
(Continued)
Item Component Function

1–14 Maintenance and Service Guide
Product Description
The external components on the left side of the Compaq Presario
V4000 are shown below and described in Table 1-5. Depending
on your computer model, component locations may vary.
Left-Side Components, Compaq Presario V4000
Table 1-5
Left-Side Components, Compaq Presario V4000
Item Component Function
1 Power connector Connects the AC adapter cable.
2 RJ-11 (modem) jack Connects a modem cable (not included).
3 RJ-45 (network) jack Connects a network cable (not included).
4 Expansion port 2
(full-featured
models only)
Connects the computer to an optional
docking device.
✎The computer has only one expansion port. The term
expansion port 2 describes the type of expansion port.
5 USB ports Connect optional USB devices.
✎Number of USB ports vary by model.