HP Compaq nw8440, Compaq nc8430, Compaq nx8420s Maintenance and Service Guide

Maintenance and Service Guide

HP Compaq nw8440 Notebook PC HP Compaq nc8430 Notebook PC HP Compaq nx8420 Notebook PC

Document Part Number: 417790-002

September 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.

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 Second Edition: September 2006 First Edition: June 2006 Document Part Number: 417790-002

MSG revision history

Revision Publication date Description

October 2010

The description for Top cover part number 418807-001 has been corrected to "For use with nw8440 models without fingerprint reader." The description for Top cover part number 416401-001 has been corrected to "For use

with nw8440 models with fingerprint reader."

The keyboard spare part numbers have been updated.

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

2Troubleshooting

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

Maintenance and Service Guide iii

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

iv Maintenance and Service Guide

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

Contents

Maintenance and Service Guide v

Contents

6 Specifications

AScrew 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

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

1.1 Fea tu re s

■ 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

16.8 million colors with AntiGlare

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

16.8 million colors with AntiGlare

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

16.8 million 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

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 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 1–3

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.

1–4 Maintenance and Service Guide

1. 3 P o w e r M a n a g e m e n t

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 E x t e r n a l C o m p o n e n t s

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.

1–6 Maintenance and Service Guide

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.

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

Table 1-2

Right-Side Components

Item Component Function

1 Audio-out

(headphone) jack

2 Internal microphone Records sound

3 Audio-in

(microphone) jack

4 USB ports (2) Connect USB 1.1- and 2.0-compliant

5 Optical drive Supports an optical disc. The type of optical

6 Serial port Connects an optional serial device.

1–8 Maintenance and Service Guide

Produces computer sound when connected to optional power stereo speakers, headphones, ear buds, a headset, or television audio.

Connects an optional computer headset microphone, stereo array microphone, or 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.

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

connector

Connects an AC adapter or an optional power adapter.

Product Description

3 External monitor port Connects an optional VGA external

Maintenance and Service Guide 1–9

monitor or projector.

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.

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

Table 1- 4

Left-Side Components (Continued)

Item Component Function

Product Description

5 Exhaust vent Provides airflow to cool internal

6 1394 port Connects an optional 1394a device such as

7 USB port Connects USB 1.1- and 2.0-compliant

8 Smart card slot Supports optional smart cards and Java™

9 PC Card slot Supports optional Type I or Type II 32-bit

10 Digital Media Slot Supports Secure Digital (SD) Memory

components.

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.

a scanner, digital camera, or digital camcorder.

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.

Cards.

(CardBus) or 16-bit PC Cards.

Cards and MultiMediaCards.

Maintenance and Service Guide 1–11

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

Table 1- 5

Standard Keyboard Components

Item Component Function

Product Description

1 f1 to f12 keys (12) Perform system and application tasks.

2 caps lock key Enables caps lock and turns on the caps

3 fn key Executes frequently used system

4 Windows logo key In Windows, displays the Windows

5 Windows

applications key

6 Arrow keys Moves the cursor around the screen.

7 Keypad keys In Windows, can be used like the keys

8 num lock key Enables numeric lock, turns on the

When combined with the fn key, several keys and buttons perform additional tasks as hotkeys.

lock light.

functions when pressed in combination with a function key or the esc key.

Start menu.

In Windows, displays a shortcut menu for items beneath the pointer.

on an external numeric keypad.

embedded numeric keypad, and turns on the num lock light.

Maintenance and Service Guide 1–13

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

(with wireless light)

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.

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 1–15

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

(select models only)

3 Stereo speakers (2) Produce stereo sound.

4 TouchPad Moves the pointer and selects or activates

Moves the pointer and selects or activates items on the screen.

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

6 Fingerprint reader Allows a fingerprint logon to Windows

7 TouchPad scroll zone Scrolls up or down.

8 Pointing stick buttons

(select models only)

Maintenance and Service Guide 1–17

buttons on an external mouse.

instead of using a password.

Function like the left, middle, and right buttons on an external mouse.

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

connector

4 Memory module

compartment

5 Hard drive bay Holds the primary hard drive.

Connects an optional HP Ultra-Capacity Battery or HP Extended Life Battery.

Contains one memory slot that supports replaceable memory modules.

6 Docking connector Connects the computer to an optional

7 Exhaust vent Provides airflow to cool internal

docking device.

components.

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 1–19

Product Description

1. 5 D e s i g n O v e r v i ew

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

CAUTION: 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.

1–20 Maintenance and Service Guide

Troubleshooting

WARNING: 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.

2.1 Computer 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 = 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

f10 while the

Troubleshooting

2. Select the Main, Security, Advanced, or Tool s 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

enter.

press

– or –

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

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

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.

f10.

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 (Password options can

be selected only when a power-on password has been set.)

Device Security Enable/disable

*Not applicable to SuperDisk LS-120 drives.

Maintenance and Service Guide 2–3

Enable/disable

■ QuickLock.

■ QuickLock on Standby.

■ QuickBlank.

To enable QuickLock on Standby or

✎

QuickBlank, you must first enable QuickLock.

■ Diskette drive startup.*

■ CD-ROM or diskette startup.

Settings for a DVD-ROM can be entered

✎

in the CD-ROM field.

+ 206 hidden pages