HP Compaq NX4820 Manuale

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.

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

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. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–36

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

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 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

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 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

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

Product Description

The HP Pavilion dv1400 Entertainment Notebook PC 1and 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

1–2 Maintenance and Service Guide

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

Product Description

Maintenance and Service Guide 1–3

■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)

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 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.

Questo manuale è adatto per i seguenti modelli

Indice

Altri manuali HP Computer portatile

Manuali Computer portatile popolari di altre marche

Velocity

Velocity NoteMagix M10 Manuale utente

Dell

Dell Alienware 17 R2 Manuale utente

Toshiba

Toshiba A105-S2236 Manuale utente

Winbook

Winbook LM Manuale utente

Dell

Dell Inspiron 1464 Manuale utente

Dell

Dell Inspiron 15R 5537 Manuale utente

Dell

Dell Latitude ATG D620 Manuale utente

Sony

Sony VAIO PCG-FX270 Manuale utente

Dell

Dell Latitude 7310 Manuale utente

Dell

Dell Precision GU806 Manuale utente

Sony

Sony VAIO PCG-R505JLK Manuale utente

Lenovo

Lenovo THINKPAD X32 Manuale utente

Toshiba

Toshiba mini NB300 Manuale utente

Lenovo

Lenovo ThinkPad X201 Tablet Manuale

Lenovo

Lenovo THINKPAD X31 Manuale

Sony

Sony VGN-T240P VAIO Manuale utente

Compaq

Compaq Armada E700 Series Manuale utente

Fujitsu

Fujitsu Lifebook A6230 Manuale utente