HP (Hewlett-Packard) nw 9440, nx 9420 User Manual
Maintenance and Service
Guide
HP Compaq nw9440 Notebook PC
HP Compaq nx9420 Notebook PC
Document Part Number: 412725-003
May 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.
© Copyright 2006, 2007 Hewlett-Packard Development Company, L.P.
Microsoft and Windows are U.S. registered trademarks of Microsoft
Corporation. Intel is a trademark or registered trademark 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 Compaq nw9440 Notebook PC
HP Compaq nx9420 Notebook PC
Third Edition: May 2007
First Edition: March 2006
Document Part Number: 412725-003
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. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–22
2Troubleshooting
2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Computer Setup Defaults . . . . . . . . . . . . . . . . . . . . . 2–3
Computer Setup Menus. . . . . . . . . . . . . . . . . . . . . . . 2–4
2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . 2–10
3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2
3.3 Display Assembly Components . . . . . . . . . . . . . . . 3–16
3.4 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.5 Cable Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–19
3.6 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–20
3.7 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–21
3.8 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–24
Maintenance and Service Guide i
Contents
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
5 Removal and Replacement Procedures
5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–2
5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–4
5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10
5.6 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
5.7 External Memory Module . . . . . . . . . . . . . . . . . . . . 5–12
5.8 Mini Card Module. . . . . . . . . . . . . . . . . . . . . . . . . . 5–14
5.9 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17
5.10 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18
5.11 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–20
5.12 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–24
5.13 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–26
5.14 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–30
5.15 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–32
5.16 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–34
5.17 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–35
5.18 Processor Heat Sink . . . . . . . . . . . . . . . . . . . . . . . 5–36
5.19 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–38
5.20 Video Board Heat Sink . . . . . . . . . . . . . . . . . . . . . 5–40
5.21 Video Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–44
5.22 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–46
ii Maintenance and Service Guide
5.23 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–63
5.24 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–66
5.25 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–68
5.26 USB/Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . 5–75
5.27 PC Card/Smart Card Assembly. . . . . . . . . . . . . . . 5–78
6 Specifications
A Screw Listing
B Software Backup and Recovery
C Display Component Recycling
D Connector Pin Assignments
E Power Cord Set Requirements
Index
Contents
Maintenance and Service Guide iii
Contents
iv Maintenance and Service Guide
1
Product Description
The HP Compaq nw9440 Notebook PC and HP Compaq nx9420
Notebook PC offer advanced modularity, Intel® Core Duo
processors, and extensive multimedia support.
HP Compaq nw9440 Notebook PC and HP Compaq nx9420
Notebook PC
Maintenance and Service Guide 1–1
Product Description
1.1 Features
■ The following processors, varying by computer model:
❏ Intel Core Duo T2600 (2.17-GHz)
❏ Intel Core Duo T2500 (2.00-GHz)
❏ Intel Core Duo T2400 (1.83-GHz)
❏ Intel Core Duo T2300 (1.66-GHz)
■ The following displays are available, varying by
computer model:
❏ 17.0-inch, WUXGA+WVA, TFT (1920 × 1200) with over
16.8 million colors with AntiGlare
❏ 17.0-inch, WSXGA+WVA, TFT (1680 × 1050) with over
16.8 million colors with AntiGlare
❏ 17.0-inch, WXGA+WVA, TFT (1440 × 900) with over
16.8 million colors with AntiGlare
❏ 17.0-inch, WSXGA+WVA, TFT (1680 × 1050) with over
16.8 million colors with BrightView
■ 100-, 80-, and 60-GB high-capacity hard drive, 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 and pointing stick pointing devices, including
a dedicated vertical scroll region (select models only)
■ 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
1–2 Maintenance and Service Guide
Product Description
■ 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 slot, with support
for both 32-bit (CardBus) and 16-bit PC Cards, varying by
computer model
■ External 120- and 90-watt AC adapters with 3-wire power
cord, varying by computer model
■ 8-cell Li-Ion battery pack
■ Stereo speakers
■ Volume up, volume mute, and volume down buttons
■ Support for the following optical drives:
❏ DVD±RW and CD-RW Combo Drive
❏ DVD/CD-RW Combo Drive
❏ DVD-ROM drive
■ Connectors:
❏ Audio-out (headphone)
❏ Audio-in (microphone)
❏ Four Universal Serial Bus (USB) v. 2.0
❏ SmartPower
❏ External monitor
❏ RJ-11 (modem)
❏ RJ-45 (network)
❏ IEEE 1394
❏ Accessory battery
❏ Digital Media Slot
❏ Parallel port
❏ S-Video-out
❏ Docking connector
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 5.9, “RTC Battery,” for more information on
removing and replacing the RTC battery).
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 computer are shown
below and described in Table 1-1.
Front Components
Tabl e 1-1
Front Components
Item Component Function
1 Wireless light On: An integrated wireless device, such as
a wireless local area network (LAN) device
and/or a Bluetooth® device, is turned on.
2Power light ■ On: The computer is on.
■ Blinking: The computer is in standby.
■ Blinking rapidly: An AC adapter with a
higher power rating should be
connected.
■ Off: The computer is off or in hibernation.
1–6 Maintenance and Service Guide
Tabl e 1-1
Product Description
Front Components
(Continued)
Item Component Function
3 Battery light ■ Amber: A battery pack is charging.
■ Green: A battery pack is close to full
charge capacity.
■ Blinking amber: A battery pack that is the
only available power source has reached
a low-battery condition. When the battery
reaches a critical low-battery condition,
the battery light begins blinking more
quickly.
■ Off: If the computer is connected to an
external power source, the light is turned
off when all batteries in the computer are
fully charged. If the computer is not
connected to an external power source,
the light is turned off until the battery
reaches a low-battery condition.
4 Drive light Blinking: The hard drive or optical drive is
being accessed.
5 Display release latch Opens the computer.
6 Stereo speakers (2) Produce stereo sound.
7 Digital Media Slot Supports 7 optional digital memory card
formats: SD (Secure Digital) Memory Card,
MultiMediaCard, Memory Stick, Memory
Stick Pro, Memory Stick Duo (with adapter),
SmartMedia, and xD-Picture Card.
Maintenance and Service Guide 1–7
Product Description
The external components on the right side of the computer are
shown below and described in Table 1-2.
Right-Side Components
1–8 Maintenance and Service Guide
Tabl e 1-2
Right-Side Components
Item Component Function
Product Description
1Audio-out
(headphone) jack
2Audio-in
(microphone) jack
3 USB ports (2) Connect USB 1.1- and 2.0-compliant
4 Optical drive Supports an optical disc. The type of optical
5 RJ-45 (network) jack Connects an optional network cable.
Connect optional headphones or powered
stereo speakers. Also connects the audio
function of an audio/video device such as
a television or VCR.
Connects an optional monaural
microphone.
devices to the computer using a standard
USB cable, or connect an optional External
MultiBay II to the computer. The MultiBay II
must also be connected to an external
power source.
drive varies by model.
Maintenance and Service Guide 1–9
Product Description
The external components on the left side of the computer are
shown below and described in Table 1-3.
Left-Side Components
Tabl e 1-3
Left-Side Components
Item Component Function
1 Exhaust vent Provides 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 Smart Adaptor power
connector
3 External monitor port Connects an optional VGA external monitor
4 S-Video-out jack Connects an optional S-Video device, such
5 USB ports (2) Connect USB 1.1- and 2.0-compliant
1–10 Maintenance and Service Guide
Connects an AC adapter or an optional
power adapter.
or projector.
as a television, VCR, camcorder, projector,
or video capture card.
devices to the computer using a standard
USB cable, or connect an optional External
MultiBay II to the computer. The MultiBay II
must also be connected to an external
power source.
Tabl e 1-3
Product Description
Left-Side Components
(Continued)
Item Component Function
6 1394 port Connects an optional 1394a device such
as a scanner, digital camera, or digital
camcorder.
7 Smart card slot Supports optional smart cards.
8 PC Card slot Supports optional Type I, Type II, or
Type III 32-bit (CardBus) or 16-bit
PC Cards.
Maintenance and Service Guide 1–11
Product Description
The external components on the rear panel of the computer are
shown below and described in Table 1-4.
Rear Panel Components
1–12 Maintenance and Service Guide
Product Description
Table 1-4
Rear Panel Components
Item Component Function
1 Security cable slot Attaches an optional security cable to the
computer.
Security solutions are designed to
Ä
act as deterrents. These deterrents
may not prevent a product from
being mishandled or stolen.
2 Battery bay Holds a battery pack.
3 Exhaust vent Provides airflow to cool internal
4 RJ-11 (modem) jack Connects the modem cable.
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.
Maintenance and Service Guide 1–13
Product Description
The standard keyboard components of the computer are shown
below and described in Table 1-5.
Standard Keyboard Components
1–14 Maintenance and Service Guide
Product Description
Table 1-5
Standard Keyboard Components
Item Component Function
1 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.
2 caps lock key Enables caps lock and turns on the
caps lock light.
3 fn
4 Windows logo key In Windows, displays the Windows
5Windows
6 Arrow keys Moves the cursor around the screen.
key Executes frequently used system
functions when pressed in combination
applications key
with a function key or the
Start menu.
In Windows, displays a shortcut menu
for items beneath the pointer.
esc key.
7 Keypad keys (16) In Windows, can be used like the keys
8 num lock key Enables numeric lock, turns on the
Maintenance and Service Guide 1–15
on an external numeric keypad.
embedded numeric keypad, and turns
on the num lock light.
Product Description
The computer top components are shown below and described in
Table 1-6.
Top Components
Table 1-6
Top Components
Item Component Function
1Power light ■ On: The computer is on.
■ Blinking: The computer is in standby.
■ Blinking rapidly: An AC adapter with a
higher power rating should be
connected.
■ Off: The computer is off or in
hibernation.
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.
If the system has stopped responding and
Windows shutdown procedures cannot be
used, press and hold for 5 seconds to turn
off the computer.
1–16 Maintenance and Service Guide
Table 1-6
Product Description
Top Components
(Continued)
Item Component Function
2 Wireless button Turns the wireless functionality on or off,
but does not create a wireless connection.
To establish a wireless connection,
✎
a wireless network must already be
set up.
Wireless light On: An integrated wireless device, such as
a wireless local area network (LAN) device
and/or a Bluetooth® device, is turned on.
3 Info Center button Enables you to view a list of commonly
Presentation mode
button
QuickLaunch
Calculator button
4 Caps lock light On: caps lock is on.
used software solutions.
Turns on Presentation mode.
Opens the Microsoft Windows calculator.
This button can also be reassigned to an
Internet or network destination or to any
software application or data file.
When you press the QuickLaunch
✎
calculator button, num lock is
enabled.
5 Num lock light On: num lock or the numeric keypad is on.
6 Volume mute button Mutes or restores speaker volume.
7 Volume down button Decreases speaker volume.
8 Volume up button Increases speaker volume.
Maintenance and Service Guide 1–17
Product Description
The computer pointing device components shown below and
described in Table 1-7.
Pointing Device Components
1–18 Maintenance and Service Guide
Table 1-7
Pointing Device Components
Item Component Function
Product Description
1 Pointing stick
(select models only)
2 Pointing stick buttons
(select models only)
3 TouchPad Moves the pointer and selects or activates
4 Fingerprint reader
(select models only)
5 TouchPad buttons (2 or
3 buttons, varying by
computer model)
6 TouchPad scroll zone Scrolls up or down.
Moves the pointer and selects or activates
items on the screen.
Function like the left, middle, and right
buttons on an external mouse.
items on the screen. Can be set to perform
other mouse functions, such as scrolling,
selecting, and double-clicking.
Allows a fingerprint logon to Windows
instead of using a password.
Function like the left, middle, and right
buttons on an external mouse.
Maintenance and Service Guide 1–19
Product Description
The external components on the bottom of the computer are
shown below and described in Table 1-8.
Bottom Components
Table 1 - 8
Bottom Components
Item Component Function
1 Primary battery bay Holds the primary battery pack.
2 Primary battery locking
latch
3 Docking connector Connects the computer to an optional
4 Accessory battery
connector
1–20 Maintenance and Service Guide
Secures the primary battery pack into
the battery bay.
docking device.
Connects an optional HP Ultra-Capacity
Battery or HP Extended Life Battery.
Table 1 - 8
Product Description
Bottom Components
(Continued)
Item Component Function
5 Memory module
compartment
Mini Card compartment
6 Hard drive bay Holds the primary hard drive.
7 Primary battery release
latch
8 Exhaust vents Provides airflow to cool internal
Contains one memory slot that supports
replaceable memory modules.
Holds an optional wireless LAN device.
To prevent an unresponsive
Ä
system and the display of a
warning message, install only a
Mini Card 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.
Releases the primary battery pack from
the battery bay.
components.
To prevent overheating, do not
Ä
obstruct fans. Do not allow a hard
surface, such as a printer, or a
soft surface, such as pillows,
thick rugs, or clothing, to block
airflow.
Maintenance and Service Guide 1–21
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:
■ Audio
■ Display
■ Hard drive
■ Intel Core Duo processors
■ Keyboard and TouchPad
■ Memory modules
■ Mini Card module
■ PC Card
CAUTION: To properly ventilate the computer, allow at least a 7.6-cm
Ä
(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.
1–22 Maintenance and Service Guide
Troubleshooting
WARNING: Only authorized technicians trained by HP should repair
Å
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.
2.1 Computer Setup
Computer Setup is a preinstalled, ROM-based utility that can be
used even when the operating system is not working or will not
load.
Some of the Computer Setup menu items listed in this guide
✎
may not be supported by your computer.
2
Pointing devices are not supported in Computer Setup. You
✎
must use the keyboard to navigate and make selections.
An external keyboard connected by USB can be used with
✎
Computer Setup only if USB legacy support is enabled.
The information and settings in Computer Setup are accessed
from the File, Security, Diagnostics, and System Configuration
menus.
Maintenance and Service Guide 2–1
Troubleshooting
1. Open Computer Setup by turning on or restarting the
computer, and then pressing
Based Setup” message is displayed in the lower-left corner of
the screen.
In Computer Setup, the following shortcuts are available:
❏ To change the language, press f2.
❏ To view navigation information, press f1.
❏ To close open dialog boxes and return to the main
2. Select the Files, Security, Diagnostics, or System
Configuration menu.
3. To exit Computer Setup, choose one of the following
methods:
❏ To exit Computer Setup without saving your preferences,
❏ To save your preferences and exit Computer Setup, use
Your preferences go into effect with the computer restarts.
f10 while the “F10 = ROM
Computer Setup screen
esc.
use the arrow keys to select File > Ignore Changes and
Exit. Then follow the instructions on the screen.
the arrow keys to select File > Save Changes and Exit.
Then follow the instructions on the screen.
2–2 Maintenance and Service Guide
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