HP Compaq NX7300 Manual

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
© Copyright 2007 Hewlett-Packard Development Company, L.P.
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
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