HP (Hewlett-Packard) nc8430, nw8440, nx8420 User Manual

Maintenance and Service

Guide

HP Compaq nw8440 Notebook PC

HP Compaq nc8430 Notebook PC

HP Compaq nx8420 Notebook PC

Document Part Number: 417790-001

June 2006

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 Hewlett-Packard Development Company, L.P.

Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Intel 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. SD Logo is a trademark of its proprietor. Java is a trademark of Sun Microsystems Inc.

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 nw8440 Notebook PC

HP Compaq nc8430 Notebook PC

HP Compaq nx8420 Notebook PC

First Edition: June 2006

Document Part Number: 417790-001

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. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–20

2 Troubleshooting

2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Using Computer Setup . . . . . . . . . . . . . . . . . . . . . . . 2–1 Selecting from the File Menu . . . . . . . . . . . . . . . . . . 2–2 Selecting from the Security Menu . . . . . . . . . . . . . . 2–3 Selecting from the Advanced Menu . . . . . . . . . . . . . 2–4 Selecting from the Tools Menu. . . . . . . . . . . . . . . . . 2–4

2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–5

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Contents

3 Illustrated Parts Catalog

3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2

3.3 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16

3.4 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–18

3.5 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–20

3.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–22

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

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Contents

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 5.6 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11 5.7 External Memory Module. . . . . . . . . . . . . . . . . . . . 5–13 5.8 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5–16 5.9 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18 5.10 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–23 5.11 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–28 5.12 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–31 5.13 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–33 5.14 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–35 5.15 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–36 5.16 Mini Card Module. . . . . . . . . . . . . . . . . . . . . . . . . 5–39 5.17 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–42 5.18 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–45 5.19 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–49 5.20 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–53 5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55 5.22 System Board Frame. . . . . . . . . . . . . . . . . . . . . . . 5–62 5.23 Serial Connector Module . . . . . . . . . . . . . . . . . . . 5–65 5.24 USB/Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . 5–67

Maintenance and Service Guide

v

Contents

6 Specifications

A Screw Listing

B Software Backup and Recovery

C Display Component Recycling

D Connector Pin Assignments

E Power Cord Set Requirements

Index

vi	Maintenance and Service Guide

1

Product Description

The HP Compaq nw8440 Notebook PC, HP Compaq nc8430 Notebook PC, and HP Compaq nx8420 Notebook PC offer advanced modularity, Intel® Core™ Duo processors, and extensive multimedia support.

HP Compaq nw8440 Notebook PC, HP Compaq nc8430 Notebook PC, and HP Compaq nx8420 Notebook PC

Maintenance and Service Guide

1–1

Product Description

1.1Features

■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:

15.4-inch, WUXGA, TFT (1920 × 1200) with over

16.8million colors with AntiGlare

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

16.8million colors with AntiGlare

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

16.8million colors with AntiGlare

■120-, 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

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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 90-watt AC adapter with 3-wire power cord

8-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

Connectors:

Accessory battery

Audio-in (microphone)

Audio-out (headphone)

Digital media slot

Docking connector

External monitor

IEEE 1394

RJ-11 (modem)

RJ-45 (network)

S-Video-out

Smart Adapter power

Three Universal Serial Bus (USB) v. 2.0

Maintenance and Service Guide

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Product Description

1.2 Resetting the Computer

If the computer you are servicing has an unknown password, follow the steps below to reset the password. These steps also clear CMOS.

The following steps will not clear an unknown password if the stringent security option has been enabled in the BIOS. If stringent security is enabled, the system board must be replaced to reset an unknown password. Refer to Section 5.23, “Serial Connector Module,” for more information on replacing the system board.

Before replacing the system board, perform the steps below to make sure stringent security has been properly enabled.

Enabling stringent security provides enhanced protection for the power-on password and administrator password and other forms of power-on authorization. Stringent security is enabled/disabled by accessing the Password Options menu in the Computer Setup utility. Refer to Section 2.1, “Computer Setup,” for more information.

1.Prepare the computer for disassembly (refer to Section 5.3, “Preparing the Computer for Disassembly,” for more information). Remove the real-time clock (RTC) battery (refer to Section 5.14, “RTC Battery,” for more information on removing and replacing the RTC battery).

2.Wait approximately 5 minutes.

3.Replace the RTC battery and reassemble the computer.

4.Connect AC power to the computer. Do not reinsert any batteries at this time.

5.Turn on the computer.

All passwords and all CMOS settings have been cleared.

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Product Description

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

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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

		Table 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.
2	Power light	■ On: The computer is on.
		■ Blinking: The computer is in standby.

■ Blinking rapidly: An HP Smart AC Adapter with a higher power rating should be connected.

■ Off: The computer is off or in hibernation.

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Product Description

Table 1-1

Front Components (Continued)

Item	Component	Function
3	Battery light	■ Amber: A battery is charging.
		■ Green: A battery is close to full charge
		capacity.
		■ Blinking amber: A battery 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 green: The hard drive or optical
		drive is being accessed.
		■ Amber: HP Mobile Data Protection has
		temporarily parked the hard drive.
5	Display release latch	Opens the computer.

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Product Description

The external components on the right side of the computer are shown below and described in Table 1-2.

Right-Side Components

Table 1-2

Right-Side Components

Item	Component	Function
1	Audio-out	Produces computer sound when connected
	(headphone) jack	to optional power stereo speakers,
		headphones, ear buds, a headset, or
		television audio.
2	Internal microphone	Records sound
3	Audio-in	Connects an optional computer headset
	(microphone) jack	microphone, stereo array microphone, or
		monaural microphone.
4	USB ports (2)	Connect USB 1.1- and 2.0-compliant
		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.
5	Optical drive	Supports an optical disc. The type of optical
		drive varies by model.
6	Serial port	Connects an optional serial device.

1–8	Maintenance and Service Guide

Product Description

The external components on the rear panel of the computer are shown below and described in Table 1-3.

Rear Panel Components

Table 1-3

Rear Panel Components

Item	Component	Function
1	Battery bay	Holds a battery.
2	Smart adapter power	Connects an AC adapter or an optional
	connector	power adapter.
3	External monitor port	Connects an optional VGA external
		monitor or projector.

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Product Description

The external components on the left side of the computer are shown below and described in Table 1-4.

Left-Side Components

Table 1-4

Left-Side Components

Item	Component	Function
1	Security cable slot	Attaches an optional security cable to the
		computer.
		Ä Security solutions are designed to
		act as deterrents. These deterrents
		may not prevent a product from being
		mishandled or stolen.
2	RJ-45 (network) jack	Connects an optional network cable.
3	RJ-11 (modem) jack	Connects the modem cable.
4	S-Video-out jack	Connects an optional S-Video device, such
		as a television, VCR, camcorder, projector,
		or video capture card.

1–10	Maintenance and Service Guide

Product Description

Table 1-4

Left-Side Components (Continued)

Item	Component	Function
5	Exhaust vent	Provides airflow to cool internal
		components.
		Ä To prevent overheating, do not
		obstruct vents. Use the computer
		only a hard, flat surface. Do not allow
		a hard surface, such as an adjoining
		printer, or a soft surface, such as
		pillows or thick rugs or clothing, to
		block airflow.
6	1394 port	Connects an optional 1394a device such as
		a scanner, digital camera, or digital
		camcorder.
7	USB port	Connects USB 1.1- and 2.0-compliant
		devices to the computer using a standard
		USB cable, or connects an optional
		External MultiBay II to the computer. The
		MultiBay II must also be connected to an
		external power source.
8	Smart card slot	Supports optional smart cards and Java™
		Cards.
9	PC Card slot	Supports optional Type I or Type II 32-bit
		(CardBus) or 16-bit PC Cards.
10	Digital Media Slot	Supports Secure Digital (SD) Memory
		Cards and MultiMediaCards.

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Product Description

The standard keyboard components of the computer are shown below and described in Table 1-5.

Standard Keyboard Components

1–12	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 key	Executes frequently used system
		functions when pressed in combination
		with a function key or the esc key.
4	Windows logo key	In Windows, displays the Windows
		Start menu.
5	Windows	In Windows, displays a shortcut menu
	applications key	for items beneath the pointer.
6	Arrow keys	Moves the cursor around the screen.
7	Keypad keys	In Windows, can be used like the keys
		on an external numeric keypad.
8	num lock key	Enables numeric lock, turns on the
		embedded numeric keypad, and turns
		on the num lock light.

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Product Description

The computer top components are shown below and described in Table 1-6.

Top Components, Part 1

1–14	Maintenance and Service Guide

Product Description

		Table 1-6
	Top Components
Item	Component	Function
1	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.
2	Info Center button	Launches Info Center, which enables you
		to open various software solutions.
3	Wireless button	Turns the wireless functionality on or off,
	(with wireless light)	but does not create a wireless connection.
		To establish a wireless connection,
		a wireless network must already be
		set up.
4	Presentation button	Starts the presentation feature.
5	Caps lock light	On: caps lock is on.
6	Num lock light	On: num lock or the numeric keypad is on.
7	Volume mute button	Mutes or restores speaker volume.
8	Volume down button	decreases speaker volume.
9	Volume up button	Increases speaker volume.

Maintenance and Service Guide

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Product Description

The computer top components are shown below and described in Table 1-7.

Top Components, Part 2

1–16	Maintenance and Service Guide

Product Description

		Table 1-7
	Top Components
Item	Component	Function
1	Display lid switch	■ If the computer is closed while on, turns
		off the display.
		■ If the computer is opened while in
		standby, turns on the computer
		(resumes from standby).
2	Pointing stick	Moves the pointer and selects or activates
	(select models only)	items on the screen.
3	Stereo speakers (2)	Produce stereo sound.
4	TouchPad	Moves the pointer and selects or activates
		items on the screen. Can be set to perform
		other mouse functions, such as scrolling,
		selecting, and double-clicking.
5	TouchPad buttons	Function like the left, middle, and right
		buttons on an external mouse.
6	Fingerprint reader	Allows a fingerprint logon to Windows
		instead of using a password.
7	TouchPad scroll zone	Scrolls up or down.
8	Pointing stick buttons	Function like the left, middle, and right
	(select models only)	buttons on an external mouse.

Maintenance and Service Guide

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Product Description

The external components on the bottom of the computer are shown below and described in Table 1-8.

Bottom Components

1–18	Maintenance and Service Guide

Product Description

Table 1-8

Bottom Components

Item	Component	Function
1	Battery bay	Holds the battery.
2	Battery release latches (2)	Secure the battery in the battery bay.
3	Accessory battery	Connects an optional HP Ultra-Capacity
	connector	Battery or HP Extended Life Battery.
4	Memory module	Contains one memory slot that supports
	compartment	replaceable memory modules.
5	Hard drive bay	Holds the primary hard drive.
6	Docking connector	Connects the computer to an optional
		docking device.
7	Exhaust vent	Provides airflow to cool internal
		components.

Ä To prevent overheating, do not obstruct vents. Use the computer only a hard, flat surface. Do not allow a hard surface, such as an adjoining printer, or a soft surface, such as pillows or thick rugs or clothing, to block airflow.

Maintenance and Service Guide

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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

■Digital Media Slot

■Display

■Hard drive

■Intel Core Duo processors

■Keyboard, pointing stick, and TouchPad

■Memory modules

■Mini Card module

■Optical drive

■PC Card

■Smart Adapter AC adapter

■Smart card

ÄCAUTION: To properly ventilate the computer, allow at least a 7.6-cm (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 turn 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. Exhaust air is displaced through the ventilation grill located on the left side of the computer.

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2

Troubleshooting

ÅWARNING: Only authorized technicians trained by HP should repair 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.

2.1Computer Setup

Computer Setup is a system information and customization utility that can be used even when the operating system is not working or will not load. This utility includes settings that are not available in Windows.

Using Computer Setup

Information and settings in Computer Setup are accessed from the Main, Security, Advanced, or Tools menus:

1.Turn on or restart the computer. Press f10 while the F10 = ROM-Based Setup message is displayed in the lower-left corner of the screen.

To change the language, use the cursor control keys to navigate to the Advanced menu.

To view navigation information, press f1.

To return to the Computer Setup menu, press esc.

Maintenance and Service Guide

2–1

Troubleshooting

2.Select the Main, Security, Advanced, or Tools menu.

3.To close Computer Setup and restart the computer:

Select Exit > Exit Saving Changes, and then press enter.

– or –

Select Exit > Exit Discarding Changes, and then press enter.

– or –

Select Exit > Load Setup Defaults, and then press enter.

4.When you are prompted to confirm your action, press f10.

Selecting from the File Menu

	Table 2-1
	File Menu
Select	To Do This
System Information	■ Change the system time and system date.
	■ View identification information about the
	computer.
	■ View specification information about the
	processor, memory and cache size, and
	system ROM.

2–2	Maintenance and Service Guide

Troubleshooting

Selecting from the Security Menu

		Table 2-2
		Security Menu
	Select	To Do This
	Administrator Password	Enter, change, or delete an Administrator
		password.
	Power-on Password	Enter, change, or delete a power-on password.
	DriveLock Passwords	Enable/disable DriveLock; change a DriveLock
		user or master password.
		DriveLock Settings are accessible only
		when you enter Computer Setup by turning
		on (not restarting) the computer.
	Password Options	Enable/disable
	(Password options can	■ QuickLock.
	be selected only when	■ QuickLock on Standby.
	a power-on password
		■ QuickBlank.
	has been set.)
		To enable QuickLock on Standby or
		QuickBlank, you must first enable
		QuickLock.
	Device Security	Enable/disable
		■ Diskette drive startup.*
		■ CD-ROM or diskette startup.
		Settings for a DVD-ROM can be entered
		in the CD-ROM field.

*Not applicable to SuperDisk LS-120 drives.

Maintenance and Service Guide

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Troubleshooting

Selecting from the Advanced Menu

	Table 2-3
	Advanced Menu
Select	To Do This
Language	Change the Computer Setup language.
Boot Order	Enable/disable MultiBoot, which sets a startup
	sequence that can include most bootable devices
	and media in the system.
Accessibility Options	Allows electronic and information technology to
	be accessible to people with varying ranges of
	abilities.
Video Memory	Displays the amount of video memory available
	on the computer.

Selecting from the Tools Menu

	Table 2-4
	Tools Menu
Select	To Do This
Hard Drive Self Test	Run a quick comprehensive self test on hard
	drives in the system that support the test features.

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