HP Compaq NX7300 Manuel

Maintenance and Service

Guide

HP Compaq nx7300 and nx7400 Notebook PC

Document Part Number: 410775-002

March 2007

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, Windows, and Windows Vista are either trademarks or

registered trademarks of Microsoft Corporation in the United States or

other countries. Intel, Celeron, and Core 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 Compaq nx7300 and nx7400 Notebook PC

Second Edition: March 2007

First Edition: May 2006

Document Part Number: 410775-002

2006,

Safety warning notice

ÅWARNING: To reduce the possibility of heat-related injuries or of

overheating the computer, do not place the computer directly on your

lap or obstruct the computer air vents. Use the computer only on a hard,

flat surface. Do not allow another hard surface, such as an adjoining

optional printer, or a soft surface, such as pillows or rugs or clothing, to

block airflow. Also, do not allow the AC adapter to contact the skin or a

soft surface, such as pillows or rugs or clothing, during operation. The

computer and the AC adapter complies with the user-accessible surface

temperature limits defined by the International Standard for Safety of

Information Technology Equipment (IEC 60950).

Maintenance and Service Guide iii

Contents

1 Product Description

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

1.2 Resetting the Computer. . . . . . . . . . . . . . . . . . . . . . . 1–5

1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–7

1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–20

2Troubleshooting

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

Navigating and selecting in Computer Setup . . . . . . 2–2

Restoring Factory Settings in Computer Setup. . . . . 2–3

File Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4

Security Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5

Diagnostics Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7

System Configuration Menu . . . . . . . . . . . . . . . . . . . 2–7

2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . 2–10

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 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14

3.4 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–16

3.5 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–18

3.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–21

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12

5.7 External Memory Module . . . . . . . . . . . . . . . . . . . . 5–14

5.8 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17

5.9 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–19

5.10 Thermal Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–23

5.11 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24

5.12 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–25

5.13 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–28

5.14 Mini Card Module. . . . . . . . . . . . . . . . . . . . . . . . . 5–30

5.15 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–33

5.16 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–35

5.17 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–36

5.18 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–39

5.19 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–43

5.20 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–47

5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–49

5.22 System Board Frame (full-featured models only). 5–56

5.23 USB/Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . 5–59

Contents

Maintenance and Service Guide vi

6 Specifications

AScrewListing

B Backup and Recovery in Windows Vista

C Backup and Recovery in Windows XP

D Display Component Recycling

E Connector Pin Assignments

F Power Cord Set Requirements

Index

Maintenance and Service Guide 1–1

Product Description

The HP Compaq nx7300 and nx7400 Notebook PC offers

advanced modularity, Intel® Core™ Duo, Core Solo, Celeron®,

and Celeron M processors, and extensive multimedia support.

HP Compaq dx7300 and nx7400 Notebook PC

1–2 Maintenance and Service Guide

Product Description

1.1 F e a t u r e s

■The following processors, varying by computer model:

❏Intel Core Duo T7600 (2.33-GHz) processor

❏Intel Core Duo T7400 (2.16-GHz) processor

❏Intel Core Duo T7200 (2.0-GHz) processor

❏Intel Core Duo T5600 (1.83-GHz) processor

❏Intel Core Duo T5500 (1.66-GHz) processor

❏Intel Core Duo T2300E (1.66-GHz) processor

❏Intel Core Duo T2250 (1.73-GHz) processor

❏Intel Core Duo T2050 (1.6-GHz) processor

❏Intel Core Duo T2600 (2.17-GHz) processor

❏Intel Core Duo T2500 (2.00-GHz) processor

❏Intel Core Duo T2400 (1.83-GHz) processor

❏Intel Core Duo T2300 (1.67-GHz) processor

❏Intel Core Solo T1350 (1.86-GHz) processor

❏Intel Core Solo T1300 (1.66-GHz) processor

❏Intel Celeron M 450 (2.0-GHz) processor

❏Intel Celeron M 430 (1.73-GHz) processor

❏Intel Celeron M 420 (1.60-GHz) processor

❏Intel Celeron M 410 (1.46-GHz) processor

■The following displays are available, varying by

computer model:

❏15.4-inch, WSXGA+, TFT (1680 × 1050) with over

16.8 million colors with BrightView

❏15.4-inch, WSXGA+, TFT (1680 × 1050) with over

16.8 million colors

❏15.4-inch, WXGA+, TFT (1440 × 900) with over

16.8 million colors

Product Description

Maintenance and Service Guide 1–3

■120-, 100-, 80-, 60-, and 40-GB high-capacity hard drives,

varying by computer model

■256-MB DDR2 synchronous DRAM (SDRAM) at 533 MHz

and 667 MHz, expandable to 4.0 GB

■Microsoft® Windows® XP Professional

■Full-size Windows keyboard with numeric keypad

■TouchPad pointing device, including a dedicated vertical

scroll region

■Integrated 10 Base-T/100 Base-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 Card IEEE 802.11a/b/g

or 802.11b/g Wireless LAN (WLAN) device

■Support for one Type I or Type II PC Card, with support

for both 32-bit (CardBus) and 16-bit PC Cards, varying by

computer model

■External 65-watt AC adapter with 3-wire power cord

■6-cell Li-Ion battery

■Stereo speakers

■Volume up, volume mute, and volume down buttons

■Support for the following optical drives:

❏DVD±RW and CD-RW Double-Layer Combo Drive

❏DVD/CD-RW Combo Drive

❏DVD-ROM drive

❏CD-ROM drive

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