HP compaq nc 4400 Service Manual

Maintenance and Service Guide

HP Compaq nc4400 Notebook PC

Document Part Number: 383207-002

May 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, 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. 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 nc4400 Notebook PC Second Edition: May 2006 First Edition: March 2005 Document Part Number: 383207-002

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 Diagnostics Menu. . . . . . . . . . . . 2–4

Selecting from the System Configuration Menu. . . . 2–5

2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–6

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 Display Assembly Components . . . . . . . . . . . . . . . 3–11

3.4 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13

3.5 Cable Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14

3.6 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–15

3.7 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–17

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11

5.6 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12

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

5.8 Keyboard Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17

5.9 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–20

5.10 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24

5.11 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–25

5.12 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–28

5.13 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–30

5.14 Mini Card WLAN Module . . . . . . . . . . . . . . . . . . 5–32

5.15 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–34

5.16 Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–48

5.17 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–51

5.18 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55

5.19 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–59

5.20 Infrared Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–61

5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–63

5.22 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–68

5.23 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–70

Contents

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

Product Description

The HP Compaq nc4400 Notebook PC offers advanced modularity, Intel® Core™ Duo and Celeron® M processors, and extensive multimedia support.

HP Compaq nc4400 Notebook PC

Maintenance and Service Guide 1–1

Product Description

1.1 Features

■ Intel Core Duo T2600 (2.17-GHz), T2500 (2.00-GHz),

T2400 (1.83-GHz), and T2300 (1.67-GHz) or Intel Celeron M 1.60-GHz processors, varying by computer model

■ 12.1-inch, XGA, TFT (1024 × 768) display with over

16.8 million colors

■ 100-, 80-, or 60-GB high-capacity hard drive, varying by

computer model

■ 256-MB DDR2 synchronous DRAM (SDRAM) at 633 MHz

and 533 MHz, expandable to 4.0 GB

■ Microsoft® Windows® XP Home Edition or Windows XP

Professional, varying by computer model

■ Full-size Windows keyboard with embedded numeric keypad

■ TouchPad and pointing stick pointing devices, including a

dedicated vertical scroll region

■ Integrated 10Base-T/100Base-T/1000Base-T 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 802.11b/g and

802.11a/b/g 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

1–2 Maintenance and Service Guide

Product Description

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

■ 6-cell Li-Ion battery pack

■ Audio speaker

■ Volume up, volume mute, and volume down buttons

■ Connectors:

❏ Infrared

❏ Audio-out (headphone)

❏ Audio-in (microphone)

❏ Universal Serial Bus (USB) v. 2.0 (3 ports, 1 powered)

❏ Smart adapter power

❏ External monitor

❏ RJ-45 (network)

❏ RJ-11 (modem)

❏ S-Video-out

❏ PC Card

❏ Digital Media Slot

❏ Primary battery pack

❏ Accessory battery pack

❏ 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 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 5.21, “System

Board,” for more information on replacing the system board.

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

Enabling stringent security provides enhanced prtotection 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).

2. Remove the real-time clock (RTC) battery (refer to

Section 5.23, “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 pack 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 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 (WLAN) device and/or Bluetooth® device, is turned on.

2Power light ■ On: The computer is on.

■ Blinking green: The computer is in standby.

■ Blinking rapidly: Wrong AC adapter is connected. Connect an HP Smart AC Adapter.

■ 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

3Battery 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 pack 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 battery packs 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 pack reaches a low-battery condition, when the light begins blinking amber.

4Drive light ■ Blinking green: The hard drive or optical

drive is being accessed.

■ Amber: HP Mobile Data Protection has temporarily parked the hard drive.

5 Infrared port Provides wireless communication between

the computer and an optional IrDA-compliant device.

6 Display release button Opens the computer.

7 Internal microphone Records sound.

8 Fingerprint reader Allows a fingerprint logon to Windows

instead of using a password.

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

2 Audio-in (microphone)

jack

3 Powered USB port Connects USB 1.1- or 2.0-compliant

4 PC Card slot or

optional smart card reader

5 Digital Media Slot Supports Secure Digital (SD) Memory

Connects an optional headphone or powered stereo speakers. Also connects the audio function of an audio/video device, such as a television or VCR.

Connects an optional monaural (single sound channel) or stereo (dual sound channel) microphone.

devices to the computer using a standard USB cable, or connects an optional external MultiBay or external MultiBay II to the computer. This USB port is a powered port that can be used without external power.

On select computer models, the PC

✎

Card slot may be replaced with an optional smart card reader.

If your computer has

■ a PC Card slot, it supports optional Type I, Type II, 32-bit (CardBus), or 16-bit PC Cards.

■ a smart card reader, it accepts smart cards or Java™ Cards.

Cards and MultiMediaCards (MMC).

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 Security cable slot Attaches an optional security cable to the

computer.

The purpose of security solutions is

✎

to act as deterrents. These deterrents may not prevent a product from being mishandled or stolen.

2 Vent Provides airflow to cool internal

1–10 Maintenance and Service Guide

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.

Depending on the computer model,

✎

vents vary in number and location.

Tabl e 1-3

Product Description

Left-Side Components

(Continued)

Item Component Function

3 Wireless button Turns the wireless functionality of the

WLAN or Bluetooth device on or off, but does not establish a connection.

To establish a wireless connection,

✎

a wireless network must already be set up.

4 USB port Connects a USB 1.1- and 2.0-compliant

device to the computer using a standard USB cable.

5 Info Center button Launches Info Center, which enables you

to open various software solutions.

6 Power switch When the computer is

■ Off, slide toward the front of the computer and release to turn on the computer.

■ In standby, slide toward the front of the computer and release to exit standby.

■ In hibernation, slide toward the front of the computer and release to exit hibernation.

If the computer has stopped responding and Microsoft Windows shutdown procedures cannot be used, slide toward the front of the computer and hold for 4 seconds to turn off the computer.

7 Speaker Enables you to listen to music and hear

audio alerts and signals from programs.

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

Tabl e 1-4

Rear Panel Components

Item Component Function

1 USB port Connects USB 1.1- and 2.0-compliant

devices to the computer using a standard USB cable.

2 RJ-11 (modem) jack Connects a modem cable. Enabled with

56-K connectivity.

3 RJ-45 (network) jack Connects a network cable. Enabled with

10BASE-T/100BASE-TX/1000BASE-T connectivity.

4 Smart adapter power

connector

5 External monitor port Connects an optional VGA external monitor

6 S-Video-out jack Is a 7-pin, dual-purpose jack.

Connects an AC adapter, an optional AC adapter, or an optional power cable.

or projector.

It connects an optional S-Video device, such as a television, VCR, camcorder, overhead projector, or video capture card, with an optional, standard (4-pin) S-Video cable.

The extra 3 pins also enable an optional S-Video-to-composite adapter to be used with the computer.

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 Function keys (6) Perform system and application tasks.

When combined with the fn key, the function keys f3, f4, and f8 through f11 perform additional tasks as hotkeys.

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

3 fn key Executes frequently used system

4 Windows logo key Displays the Microsoft Windows

5Windows

applications key

6 Arrow keys Moves the cursor around the screen.

7 Embedded numeric

keypad

8 num lock key Enables numeric lock, turns on the

lock light.

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

Start menu.

Displays a shortcut menu for items beneath the pointer.

Can be used like an external numeric keypad.

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

Maintenance and Service Guide 1–15

Product Description

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

Top Components

1–16 Maintenance and Service Guide

Table 1-6

Top Components

Item Component Function

Product Description

1 Left and right TouchPad

buttons (2)

2 TouchPad Moves the pointer. Can be set to perform

3 Left and right pointing

stick buttons (2)

4 Pointing stick Moves the pointer.

5 Vent Provides airflow to cool internal

6 Presentation button Starts the presentation feature.

7 Volume mute button Mutes or restores volume.

8 Volume down button Decreases computer sound.

9 Volume up button Increases computer sound.

10 TouchPad scroll zone Scrolls upward or downward.

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

other mouse functions, such as scrolling, selecting, and double-clicking.

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

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 1–17

Product Description

The external components on the bottom of the computer are shown below and described in Table 1-7.

Bottom Components

1–18 Maintenance and Service Guide

Product Description

Table 1 -7

Bottom Components

Item Component Function

1 Base enclosure cover Covers the display cable and connector.

2 Docking connector Connects the computer to an optional

docking device.

3 Accessory battery

connector

4 Vents (3) Provides airflow to cool internal

5 Battery bay Holds the battery pack.

6 Battery release latch Releases the battery pack from the

7 Hard drive cover Holds the primary hard drive.

8 Expansion memory

module compartment

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

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.

battery bay.

Contains one expansion memory module slot.

Maintenance and Service Guide 1–19

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

■ Bluetooth

■ Display

■ Hard drive

■ Intel Core Duo and Celeron M processors

■ Keyboard

■ Memory module

■ Mini Card devices

■ PC Card

■ Pointing stick

■ To uc hP ad

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 File, Security, Diagnostics, or System Configuration 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 System Configuration 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 File, Security, Diagnostics, or System Configuration menu.

3. To close Computer Setup and restart the computer:

❏ Select File > Save changes and exit, and then press enter.

– or –

❏ Select File > Ignore changes and exit, and then

– or –

❏ Select File > Restore defaults, and then press enter.

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 ■ View identification information about the

computer, processor, memory and cache size, and system ROM.

■ View BIOS revision, keyboard controller version, and battery pack serial number information.

f10.

2–2 Maintenance and Service Guide

Troubleshooting

Selecting from the Security Menu

Table 2 -2

Security Menu

Select To Do This

Setup Password Enter, change, or delete an Setup password.

Power-On Password Enter, change, or delete a power-on password.

Password Options (Password options can

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

DriveLock Passwords Enable/disable DriveLock; change a DriveLock

Smart Card Security Enable/disable smart card power-on support.

TPM Embedded Security Enable/disable:

System IDs Establish:

Disk Sanitizer Establish fast, optimum, or custom settings for

Enable/disable:

■ Stringent security.

■ Requirement of password on restart.

user or master password.

DriveLock Settings are accessible only

✎

when you enter Computer Setup by turning on (not restarting) the computer.

A setup password must be established to

✎

use this feature.

■ Embedded security device state.

■ Power-on authentication support.

■ Automatic DriveLock support.

■ Notebook asset tracking number.

■ Notebook ownership tags.

disk sanitizing.

*Not applicable to SuperDisk LS-120 drives.

Maintenance and Service Guide 2–3

Troubleshooting

Selecting from the Diagnostics Menu

Table 2 -3

Diagnostics Menu

Select To Do This

HDD Self-Test Options Run a quick comprehensive self test on hard

drives in the system that support the test features.

Memory Check Run a quick comprehensive test on system

memory on the following categories:

■ Walking 0s

■ Walking 1s

■ High Address line testing

■ Alternate Pattern testing

2–4 Maintenance and Service Guide

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