HP omnibook XE4400 Service Manual

®

HP Omnibook XE4400

Technology Code KD

Service Manual

Notice

In a continuing effort to improve the quality of our products, technical and environmental information
in this document is subject to change without notice.

This manual and any examples contained herein are provided “as is” and are subject to change without
notice. Hewlett-Packard Company makes no warranty of any kind with regard to this manual,
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Consumer transactions in Australia and the United Kingdom: The above disclaimers and limitations
shall not apply to Consumer transactions in Australia and the United Kingdom and shall not affect the
statutory rights of Consumers.

© Copyright Hewlett-Packard Company 1998–2002. All rights reserved. Reproduction, adaptation, or
translation of this manual is prohibited without prior written permission of Hewlett-Packard Company,
except as allowed under the copyright laws.

The programs that control this product are copyrighted and all rights are reserved. Reproduction,
adaptation, or translation of those programs without prior written permission of Hewlett-Packard Co.
is also prohibited.

Portions of the programs that control this product may also be copyrighted by Microsoft Corporation,
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This product incorporates copyright protection technology that is protected by method claims of
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All certifications may not be completed at product introduction. Check with your HP reseller for
certification status.

This equipment is subject to FCC rules. It will comply with the appropriate FCC rules before final
delivery to the buyer.

Hewlett-Packard Company
Mobile Computing Division
19310 Pruneridge Ave.
Cupertino, CA 95014, U.S.A.

Edition History

Edition 1 (KD) ................................ April 2002

ii HP Omnibook XE4400

Contents

Product Information...................................................................................................... 1-1

Features .........................................................................................................................................1-2

Operation.......................................................................................................................................1-5

Turning the Notebook On and Off .........................................................................................1-5

Checking the Status of the Notebook .....................................................................................1-6

Using Fn Hot Keys .................................................................................................................1-7

Resetting the Notebook ..........................................................................................................1-8

Specifications ................................................................................................................................1-9

Internal Design ............................................................................................................................1-12

Removal and Replacement............................................................................................ 2-1

Disassembly Flowchart..................................................................................................................2-3

Removing the Battery (User-Replaceable)....................................................................................2-4

Removing a SDRAM Module (User-Replaceable)....................................................................... 2-5

Removing the Wireless LAN Mini-PCI Card (User-Replaceable) ............................................... 2-7

Removing the Hard Disk Drive (User-Replaceable).....................................................................2-8

Replacing Small Parts (User-Replaceable) .................................................................................2-10

Removing the Keyboard Cover/Speaker Assembly (User-Replaceable) .................................... 2-11

Removing the Keyboard (User-Replaceable).............................................................................. 2-13

Removing the Button Cover (User-Replaceable)........................................................................2-15

Removing the CD/DVD Drive (User-Replaceable)....................................................................2-17

Removing the Display Assembly (HP Authorized Service Providers Only) .............................. 2-18

Removing the Top Case (HP Authorized Service Providers Only) ............................................2-20

Removing the Floppy Drive (HP Authorized Service Providers Only) ...................................... 2-22

Removing the Infrared (I/R) PCA (HP Authorized Service Providers Only) .............................2-24

Removing the Audio Control PCA (HP Authorized Service Providers Only) ...........................2-26

Removing the PCMCIA Socket (HP Authorized Service Providers Only) ................................2-28

Removing the ESD Shield (HP Authorized Service Providers Only)......................................... 2-29

Removing the Heatsink (with Fans) (HP Authorized Service Providers Only) ..........................2-31

Removing the CPU Module (HP Authorized Service Providers Only) ......................................2-33

Removing the Motherboard (HP Authorized Service Providers Only).......................................2-34

Replacing Components on a Bottom Case..................................................................................2-37

Repairing the BIOS IC (HP Authorized Service Providers Only) ..............................................2-39

Removing Other Components (HP Authorized Service Providers Only) ................................... 2-41

Troubleshooting and Diagnostics ................................................................................. 3-1

Troubleshooting ............................................................................................................................3-2

Checking for Customer Abuse ...............................................................................................3-3

Troubleshooting the Problem ................................................................................................. 3-3

Verifying the Repair...............................................................................................................3-4

Suggestions for Troubleshooting............................................................................................3-5

Diagnostic Tools .........................................................................................................................3-17

e-Diagtools Diagnostic Program ..........................................................................................3-17

Power-On Self-Test..............................................................................................................3-20

Sycard PCCtest 450/460 PC Card (Optional) ......................................................................3-25

Windows Management Instrumentation (WMI)...................................................................3-26

BIOS Setup Utility................................................................................................................3-27

HP Omnibook XE4400 iii

Replaceable Parts........................................................................................................... 4-1

Reference Information................................................................................................... 5-1

Password Removal Policy............................................................................................................. 5-1

Hewlett-Packard Display Quality Statement................................................................................. 5-2

Service Notes and Obsolete Parts .................................................................................................5-4

iv HP Omnibook XE4400

Figures

Figure 1-1. Omnibook XE4400— Front View ....................................................................................1-2

Figure 1-2. Omnibook XE4400— Back View.....................................................................................1-3

Figure 1-3. Omnibook XE4400— Bottom View .................................................................................1-4

Figure 1-4. Resetting the Notebook ..................................................................................................... 1-8

Figure 1-5. Replaceable Module Diagram .........................................................................................1-12

Figure 2-1. Disassembly Flow..............................................................................................................2-3

Figure 2-2. Removing the Battery........................................................................................................2-4

Figure 2-3. Removing an SDRAM Module .........................................................................................2-6

Figure 2-4. Removing the Mini-PCI Card............................................................................................2-7

Figure 2-5. Removing the Hard Disk Drive.........................................................................................2-8

Figure 2-6. Removing the Hard Disk Drive Tray.................................................................................2-9

Figure 2-7. Removing the Keyboard Cover/Speaker Assembly.........................................................2-12

Figure 2-8. Removing the Keyboard..................................................................................................2-14

Figure 2-9. Removing the Button Cover............................................................................................2-15

Figure 2-10. Removing the CD/DVD Drive......................................................................................2-17

Figure 2-11. Removing the Display Assembly .................................................................................. 2-19

Figure 2-12. Removing the Top Case ................................................................................................2-21

Figure 2-13. Removing the Floppy Drive ..........................................................................................2-22

Figure 2-14. Removing the I/R PCA..................................................................................................2-25

Figure 2-15. Removing the Audio Control PCA................................................................................2-27

Figure 2-16. Removing the PCMCIA Socket ....................................................................................2-28

Figure 2-17. Removing the ESD Shield............................................................................................. 2-30

Figure 2-18. Removing the Heatsink (with Fans) ..............................................................................2-31

Figure 2-19. Removing the CPU Module ..........................................................................................2-33

Figure 2-20. Removing the Motherboard...........................................................................................2-35

Figure 2-21. Example of Serial Number Label ..................................................................................2-37

Figure 2-22. Replacing the Antennas.................................................................................................2-38

Figure 2-23. Removing a PCMCIA Door .......................................................................................... 2-38

Figure 2-24. Boot-Block Jumper........................................................................................................2-40

Figure 3-1. Basic Troubleshooting Steps ............................................................................................. 3-2

Figure 4-1. Exploded View..................................................................................................................4-2

HP Omnibook XE4400 v

Tables

Table 1-1. Omnibook XE4400 Notebook............................................................................................ 1-1

Table 1-2. Activating Power Modes .................................................................................................... 1-5

Table 1-3. Main Status Lights (front of notebook) .............................................................................. 1-6

Table 1-4. Keyboard Status Lights....................................................................................................... 1-6

Table 1-5. Fn Hot Keys ........................................................................................................................ 1-7

Table 1-6. Omnibook XE4400 Specifications..................................................................................... 1-9

Table 1-7. Omnibook XE4400 Accessories....................................................................................... 1-11

Table 1-8. Functional Structure Description...................................................................................... 1-13

Table 2-1. Removal Cross-Reference ..................................................................................................2-1

Table 2-2. Required Equipment........................................................................................................... 2-2

Table 2-3. Recommended Screw Torque Values.................................................................................2-2

Table 2-4. Replacing Small Parts (User-Replaceable)....................................................................... 2-10

Table 2-5. Removing Omnibook XE4400 Components....................................................................2-41

Table 3-1. Scope of Diagnostic Tools..................................................................................................3-5

Table 3-2. Troubleshooting Suggestions ............................................................................................. 3-6

Table 3-3. POST Terminal-Error Beep Codes................................................................................... 3-20

Table 3-4. POST Messages................................................................................................................ 3-23

Table 3-5. Sycard PCCtest Commands..............................................................................................3-25

Table 3-6. BIOS Setup Menus and Parameters..................................................................................3-27

Table 4-1. Omnibook Replaceable Parts..............................................................................................4-3

Table 4-2. Accessory Replaceable Parts.............................................................................................. 4-5

Table 4-3. Part Number Reference ......................................................................................................4-5

Table 5-1. Omnibook XE4400 LCD Guidelines ................................................................................. 5-3

vi HP Omnibook XE4400

Introduction

This manual provides reference information for servicing an HP Omnibook XE4400 (technology code
KD) notebook computer. It is for use by HP-authorized service personnel while installing, servicing,
and repairing this product.

The manual is designed as a self-paced guide that will train you to install, configure, and repair this
notebook. The manual is self-contained, so you can follow it even without having equipment
available.

The following table lists other sources of information about the notebook computer and related
products.

Source Address or Number Comments

HP Notebook Web Site http://www.hp.com/notebooks

(http://www.europe.hp.com/notebook,
European mirror)

HP Business Support web
Site

HP Partnership Web http://partner.americas.hp.com Restricted to Authorized Resellers

HP Asia Pacific Channel
Support Centre for DPSP
Partners

HP/MCD web site http://www.mcd.hp.com HP’s internal web site for division

America Online Keyword: HP Call [phone] for membership

CompuServe GO HP Call [phone] for membership

HP Support Assist CD-ROM [phone] US and Canada.

Microsoft Windows manual Information about Windows operating

Microsoft W eb http://www.microsoft.com Information and updates for Windows

www.hp.com/go/bizsupport

only.

http://www.hp.com.au Restricted to DPSP Partners only.

information.

within the US.

within the US.

[phone] Outside US and Canada.

system.

operating systems.

HP Omnibook XE4400 vii

1

Product Information

The HP Omnibook XE4400 notebook computer provides outstanding performance and expandability
in a conveniently portable form. The notebook’s high-performance components use the latest
technologies to enable it to serve as a desktop computer or a portable multimedia presentation tool.
Note that the following list of products is current at the time of publication but is subject to change.

Table 1-1. Omnibook XE4400 Notebook

Omnibook
Product * CPU Display

F4666 J/H Pentium 4-DT 1.8 GHz 14.1-in XGA 20 GB DVD 256 MB/32 MB Modem/LAN Li-Ion

F4667 J/H Pentium 4-DT 2.0 GHz 15-in XGA 30 GB CDRW/DVD 256 MB/32 MB Modem/LAN Li-Ion

F4670 J/H Pentium 4-DT 1.8 GHz 14.1-in XGA 20 GB DVD 256 MB/16 MB Modem/LAN Li-Ion

F4671 J/H Pentium 4-DT 2.0 GHz 15-in XGA 30 GB CDRW/DVD 256 MB/16 MB Modem/LAN Li-Ion

F4673 J/H Pentium 4-DT 1.8 GHz 15-in SXGA+ 30 GB CD 256 MB/32 MB Modem/LAN Li-Ion

F4674 J/H Pentium 4-DT 2.0 GHz 15-in SXGA+ 40 GB CDRW/DVD 512 MB/32 MB Modem/LAN Li-Ion

This table lists only base product configurations—custom configurations are not included.

* The J/H suffix indicates the notebook’s OS: J = Windows XP Professional with Windows 2000 Recovery CDs,

H = Windows XP Home.

Hard
Drive

CD/DVD
Drives

Standard
SDRAM/
Video Mem

Communication Battery

HP Omnibook XE4400 Product Information 1-1

Features

The following three illustrations show the notebook’s main external features. For an exploded view of
the notebook, see page 4-2.

Figure 1-1. Omnibook XE4400— Front View

1. Notebook open/close latch.

2. One-touch buttons.

3. Keyboard status lights.

4. Power button. Turns the notebook on and off.

5. Touch pad, scroll pad, click buttons, plus on-off
button.

6. Main status lights (left to right): power mode,
battery, hard disk activity.

7. Infrared port*.

8. Wireless on-off button and indicator light*.

9. Battery.

10. Volume and mute controls*.

11. Audio jacks (left to right): audio out
(headphones), external microphone.

12. CD-ROM, DVD, or other drive.

13. Universal Serial Bus (USB) port.

* on certain models

1-2 Product Information HP Omnibook XE4400

Figure 1-2. Omnibook XE4400— Back View

14. AC adapter jack.

15. Two USB ports.

16. LAN port*.

17. PS/2 keyboard or PS/2 mouse port (supports Y
adapter).

18. Parallel port (LPT1). Use this port for a parallel
printer or other parallel device.

19. External monitor.

20. S-video port*.

21. Kensington lock slot (security connector).

22. Modem port*.

23. IEEE 1394 port*.

24. Two PC Card and CardBus slots and buttons.

25. Floppy drive*.

* on certain models

HP Omnibook XE4400 Product Information 1-3

Figure 1-3. Omnibook XE4400— Bottom View

26. Hard disk drive.

27. Battery latch.

28. Mini-PCI door (no user parts inside).

29. SDRAM door.

30. Port replicator connector*.

31. Reset button.

* on certain models

1-4 Product Information HP Omnibook XE4400

Operation

This section gives an overview of the notebook’s operation.

Turning the Notebook On and Off

You can start and stop your notebook using its power button. However, at certain times you might
want to use other methods to start or stop the notebook—depending on power considerations, types of
active connections, and start-up time.

Note

This manual describes the notebook in its original factory configuration, with all settings at their
default values.

Table 1-2. Activating Power Modes

Power mode To enter this mode

On

Power mode status light is on.

Standby mode

Saves significant power.
Turns off the display and other components.
Maintains current session in RAM.
Restarts quickly.
Restores network connections.
Power mode status light blinks.

Hibernate mode

Saves maximum power.
Saves current session to disk, then shuts down.
Restores network connections.
Power mode status light is off.

Shut down (off)

Saves maximum power.
Turns off without saving current session.
At startup, resets everything, starts a new session,
and restores network connections.
Power mode status light is off.

To turn on: Press the power button to restart, or to resume your session from Standby or Hibernate mode.

Press the power button.

Press the power button
–or–
click Start, Turn Off Computer, Stand By (Windows XP)
–or–
click Start, Shut Down, Standby (Windows 2000)
–or–
allow timeout.

Press Fn+F12
–or–
click Start, Shut Down, Hibernate (Windows 2000)
–or–
allow timeout.

Click Start, Turn Off Computer, Turn Off (Windows XP)
–or–
click Start, Shut Down, Shut down (Windows 2000)
–or–
press the power button for 4 seconds (only if the Start
menu procedure doesn’t work).

HP Omnibook XE4400 Product Information 1-5

Checking the Status of the Notebook

The main status lights on the front of the notebook report power status, battery status, and hard disk
activity.

Table 1-3. Main Status Lights (front of notebook)

Meaning

Power status

On: notebook is on (even if the display is off).
Blinking: notebook is in Standby mode.
Off: notebook is off or in Hibernate mode.

Hard disk drive activity

On: notebook is accessing the hard disk drive.

Battery status

Green: The AC adapter is connected and the battery is fully charged.
Amber: The AC adapter is connected and the battery is charging.
Blinking: The AC adapter is connected and the battery is missing or has a fault.
Off: The AC adapter is not connected.

The keyboard status lights, located above the keyboard, indicate the states of the keyboard locks.

Table 1-4. Keyboard Status Lights

Meaning

Caps Lock

Caps Lock is active.

Num Lock

Num Lock is active. (The Keypad Lock must also be on to use the embedded
keypad.)

Keypad Lock

The embedded keypad is active (Fn+F8). Num Lock must also be on for the
numeric keys; otherwise, cursor control is active (as marked on an external
keyboard).

1-6 Product Information HP Omnibook XE4400

Using Fn Hot Keys

The combination of the Fn key plus another key creates a hot key—a shortcut key sequence—for
various system controls. To use a hot key, press and hold Fn, press the appropriate second key, then
release both keys.

Table 1-5. Fn Hot Keys

Hot Key Effect

Fn+F1 Decreases the display brightness.

Fn+F2 Increases the display brightness.

Fn+F5 Toggles among the built-in display, an external display, and simultaneous display on

both.

Fn+F8 Toggles the built-in keypad on and off. Does not affect an external keyboard. If Num

Lock is on, then the numeric functions are active; otherwise, cursor control is active (as

marked on an external keyboard).
Fn+F12 Enters Hibernate mode.
Fn+NumLock Toggles Scroll Lock on and off.
Fn+Page Up Increases the audio volume and cancels the mute setting.
Fn+Page Down Decreases the audio volume.
Fn+Backspace Audio mute.

HP Omnibook XE4400 Product Information 1-7

Resetting the Notebook

Occasionally, Windows or the notebook might stop responding, so that you cannot turn the notebook
off. If this happens, try the following in the order listed. Press the power button to restart.

• If possible, shut down Windows:

Windows XP: press CTRL+ALT+DEL, and then click Shut Down, Restart.

Windows 2000: press CTRL+ALT+DEL, click Shut Down, and press the power button to restart.

• Press and hold the power button for about four seconds until the display shuts down, and then

press the power button again to restart.

• Use a ballpoint pen or a straightened paper clip to press the reset button on the bottom of the

notebook.

Figure 1-4. Resetting the Notebook

Note

To boot from a CD, insert a bootable CD (such as the Recovery CDs) into the CD/DVD drive, then
restart. Press Esc when the HP logo appears, then select the CD/DVD drive as the temporary
boot device.

1-8 Product Information HP Omnibook XE4400

Specifications

The following tables list the specifications for the notebook and its accessories. These are subject to
change: for the latest versions, see the HP Notebook web site (www.hp.com/notebooks).

Table 1-6. Omnibook XE4400 Specifications

Physical Attributes

Processor and
Bus Architecture

Video

Power

Mass Storage

RAM

Audio System

Keyboard and
Pointing Device

LAN

(certain models)

Size (14-inch display): 329 × 272 × 44 mm (rear: 48 mm)
(13 × 10.7 × 1.8 in; rear: 1.9 in).
Size (15-inch display): 329 × 272 × 45 mm (rear: 49 mm)
(13 × 10.7 × 1.8 in; rear: 1.9 in).
Weight: 2.9 kg (6.5 lb) minimum, depending on configuration.

1.8- to 2.0-GHz Intel Pentium 4 processor (SFF or desktop).
512-KB L2 cache.

1.2- to 1.3-V core low-power processor with 400-MHz processor system bus.

14.1-inch XGA (1024 × 768), or 15.0-inch XGA (1024 × 768) or SXGA+
(1400 × 1050) active-matrix (TFT) LCD display.
Hardware 3D acceleration, hardware DVD acceleration.

External monitors up to 1600 × 1200 resolution, 16M colors, and at least 85 Hz
refresh rate (only 60 Hz at 1400 × 1050). Refresh rate and clarity may vary
depending on monitor, resolution, and color depth.
ATI Mobility Radeon graphics accelerator with 32-MB DDR graphics memory,
4x AGP graphics capability.
Dual display capability (depends on operating system support).

Rechargeable lithium-ion (14.8 Vdc) or nickel-metal-hydride (9.6 Vdc) battery with
LED charge-level gauge.
Battery life: up to 3 (LiIon) or 2 hours (NiMH) hours typical (varies with model, usage,
and power settings).
Fast battery recharge: 2.5 hours when system is off, 4 hours when system is on.
Low-battery warning.
Suspend/resume capability.

Universal AC adapter: 100–240 Vac (50/60 Hz) input, 19 Vdc output, 90 W.

20- to 60-GB removable hard drive with Ultra-DMA 100 interface.

1.44-MB floppy drive (certain models).
24x CD-ROM, or 8x DVD, or CD-RW, or CD-RW/DVD drive (or higher).

At least 128 MB SDRAM preinstalled.

Two slots for PC2100 DDR-266 SDRAM modules.
Up to 2 GB (2048 MB) SDRAM using 1 GB modules (when available); otherwise,
up to 1 GB (1024 MB) SDRAM using 512 MB modules.

Stereo sound via two built-in speakers.
3D-enhanced audio.
Volume and mute buttons (certain models).
Built-in microphone (certain models).
Headphone-out and microphone-in.

87/88-key touch-type QWERTY keyboard with 101/102 key emulation.
Embedded numeric keypad.
12 function (Fn) keys.
5 user-programmable One-Touch buttons.
Touch pad with integrated scroll pad, on-off button and indicator.
Left and right click buttons.

Ethernet 10Base-T (10 Mbps) and 100Base-TX (100 Mbps) support.
Supports wake-on-LAN, fast IP, DMI, dRMON.
MBA (Managed Boot Agent) support for PXE/BINL, NCP/IPX, DHCP.

HP Omnibook XE4400 Product Information 1-9

Modem

(certain models)

Wireless LAN

(certain models)

Input/Output

Expandability

Security Features

Environmental Limits

Major ICs

Software-based modem.
Data speed: 56 Kbps (V.92) maximum.
Fax speed: 14.4 Kbps, Class 1 and 2.
Modulation: V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34, V.90, V.92, X2, Bell 103,
Bell 212A.
Synchronous transfer: V.80.
Compression: V.42bis, MNP5.
Error correction: V.42, MNP2-4.
Fax: Group 3 fax, Class 1. V.17, V.27ter, V.29, V.21.

Radio: IEEE 802.11b, WECA Wi-Fi compliant, direct-sequence spread-spectrum.
Operating frequency: 2.5-GHz ISM band, exact frequencies and channels depend on
country.
Raw data rate: 1, 2, 5.5, or 11 Mbps.
Transmitter output: 15 dBm typical (approx. 30 mW), 16 dBm max (approx. 40 mW).
Receiver sensitivity: –84 dBm typical.
Range: up to 100 m (300 ft) or more, depending on environment and conditions.
On-off button and indicator.
Mini-PCI interface.

25-pin bi-directional ECP/EPP parallel.
15-pin VGA video-out with DDC support.
S-video TV out (certain models).
PS/2 keyboard/mouse.
4-Mbps IrDA-compliant infrared port (certain models).
IEEE-1394 (certain models).
Universal serial bus (USB 1.1), three ports.

One or two 16-/32-bit PC Card slots, Type II or III, CardBus enabled.
Optional port replicator (certain models).

User and administrator passwords.
System password.
PC identification displayed at boot.
WMI-accessible electronic serial number.
Kensington MicroSaver lock slot.

Operating temperature: 5 to 35 °C (41 to 95 °F).
Operating humidity: 20 to 90 percent RH (5 to 35 °C).
Operating altitude: up to 3000 m (10,000 ft) at 25 °C (77 °F).
Storage temperature: –20 to 50 °C (–4 to 122 °F).

CPU: Intel Pentium 4 processor (SFF or desktop).
Core logic: ALI 1671 / 1535+ chipset.
Display controller: ATI Mobility Radeon M6-C/P.
Audio/Modem controller: Conexant Smart AMC CX20468-21.
CardBus controller: TI PC1520.
Keyboard/embedded controller: National PC87570.
Super I/O: integrated in core logic.
IEEE 1394: TI TSB43AB22.
LAN: National NS83815.

802.11b wireless LAN: Ambit with Intersil Prism 2.5 chipset.

1-10 Product Information HP Omnibook XE4400

Table 1-7. Omnibook XE4400 Accessories

Accessory Description

Memory

F4694A 128-MB SDRAM module (DDR266)
F4695A 256-MB SDRAM module (DDR266)
F4696A 512-MB SDRAM module (DDR266)

Hard Drive

F4810A 40-GB hard disk drive module

Power Options

F4813A/
F5104A

F4809A/
F4812A

8120-6312 Replacement power cord (Australia)
8120-6313 Replacement power cord (U.S., Canada, Taiwan)
8120-6314 Replacement power cord (Europe)
8120-6316 Replacement power cord (Japan)
8121-0702 Replacement power cord (India)
8120-6317 Replacement power cord (South Africa)
8120-8367 Replacement power cord (Argentina)
8120-8373 Replacement power cord (People’s Rep. of China)
8120-8441 Replacement power cord (S. Korea)
8120-8452 Replacement power cord (Chile)
8120-8699 Replacement power cord (Hong Kong, Singapore)

Adapters

F1469A PS/2 Y adapter

PC Cards

F2136B 802.11b wireless comm PC card (128-bit)
F2196A 3Com bluetooth PC card

Docking

F4808A/
F4811A

Other

F2100A USB optical travel mouse
P1534A External amplified speakers
P1977A USE compact flash reader (Type II)
F1645A Kensington lock
P1978B

90-watt AC adapter

8-cell Lithium-ion battery

Simple port replicator

USB web camera

HP Omnibook XE4400 Product Information 1-11

Internal Design

The motherboard PCA is the central component of the notebook’s design. It plays a role in virtually
all system functions. The CPU module and most other subsystems connect to the motherboard.

The following figure shows the connections among the notebook’s replaceable electronic modules.
Table 1-8 on page 1-13 lists the roles that these modules play in the notebook’s functional subsystems.

Figure 1-5. Replaceable Module Diagram

1-12 Product Information HP Omnibook XE4400

Table 1-8. Functional Structure Description

Bootup

Processor

Memory

Power

Display

Hard disk

Floppy drive

Keyboard

PS/2
Touchpad

Audio

Status

Serial

Parallel

Infrared

PS/2 port

USB

S-Video

Port Replicator

PCMCIA

Wireless LAN

(certain models)

LAN

Modem

CPU module
Motherboard
Hard disk drive
Floppy drive

CPU module
Motherboard

Motherboard
SDRAM module

Battery
Motherboard

AC adapter

Motherboard
Display assembly

Motherboard
Hard disk drive

Motherboard
Floppy drive

Motherboard
Button cover
Keyboard

Motherboard
Top case

Motherboard
Audio Control PCA
Keyboard
cover/speaker
assembly

Motherboard
Button cover
Top case

Motherboard I/O controller, serial connector.

Motherboard I/O controller, parallel connector.

Motherboard I/O controller, infrared transmitter/receiver.

Motherboard PS/2 connector, keyboard controller.

Motherboard Bus controller (South Bridge), USB connector.

Motherboard I/O controller, S-video connector (certain models).

Motherboard Port replicator logic, port replicator connector (certain models).

Motherboard
PCMCIA socket

Mini-PCI
Antenna PCAs

Motherboard LAN circuitry, bus controller, LAN connector.

Motherboard Modem circuitry (certain models), modem connector.

Main processor (MMO).
Primary system circuitry, system BIOS.
First source of disk-based startup code.
Second source of disk-based startup code.

Main processor, numeric data processor, L1 and L2 cache.
Primary system circuitry.

Video RAM
no onboard SDRAM

Power storage.
AC adapter socket, reset button, lid switch, power supply, power
control circuitry.
AC-to-DC converter.

Graphics controller, video RAM
Display output, backlight, power converter for backlight.

Hard disk controller.
Hard disk mechanism.

I/O controller, floppy connector.
Floppy drive mechanism.

Keyboard BIOS, keyboard controller.
Power switch, one-touch buttons
Key switches.

Keyboard circuitry, keyboard controller, keyboard BIOS.
Touch pad sensor, click buttons, controller (PS/2 output).

Audio controller, audio decoder, speaker amplifier, microphone.
External audio jacks, headphone amplifier, audio-off switch.
Speakers.

LED circuitry, keyboard controller.
Keyboard LEDs.
Main status LEDs.

PCMCIA controller.
PCMCIA connectors.

I/O controller, radio, radio frequency circuitry.
Transmit/receive antennas.

HP Omnibook XE4400 Product Information 1-13

Removal and Replacement

This chapter tells you how to remove and replace the notebook’s components and assemblies. The
items marked by

Assembly, display (page 2-18).
Battery, CMOS (page 2-41).

• Battery, main (page 2-4).

• Card, wireless LAN mini-PCI (page 2-7).

Case, bottom (page 2-34).
Case, top (page 2-20).

• Cover, keyboard/speaker assembly

(page 2-11).

• Door, mini-PCI (page 2-10).

• Door, memory (page 2-10).

Doors, PCMCIA (page 2-37).

• Drive, hard disk (page2-8).

• Drive, CD/DVD (page 2-17).

Drive, floppy (page 2-18).

in the following table are user-replaceable.

•

Table 2-1. Removal Cross-Reference

• Feet, rubber (page 2-10).

Heatsink (with fans) (page 2-31).
Keyboard (page 2-13).
Module, CPU (page 2-33).

• Module, SDRAM (page 2-5).

• Panel, cover (page 2-15).

PCA, audio control (page 2-26).
PCA, front antennas (page 2-37).
PCA, IR (page 2-24).
PCA, motherboard (page 2-34).

• Rubber screw plug, HDD (page 2-10).

Shield, ESD (page 2-29).
Socket, PCMCIA (page 2-28).

2

Caution

Always provide proper grounding when performing repairs. Without proper
grounding, an electrostatic discharge can damage the notebook and its
components.

Notes

Reassembly steps are the reverse of the removal steps. Reassembly notes are included at the end
of each section below.

Symbols like these are displayed throughout this chapter to show approximate full-size screw
outlines. You can use these to verify the sizes of screws before you install them. Installing a wrong­size screw can damage the notebook. (The symbol at the left represents an M2.5 × 5 mm T-head
screw.)

HP Omnibook XE4400 Removal and Replacement 2-1

Table 2-2. Required Equipment

• Small Phillips screwdriver, preferably magnetized.

• Small flat-blade screwdriver.

• 5 mm nut driver

Table 2-3. Recommended Screw Torque Values

Screw Thread Size Torque (cm-kgf) Torque (in-lbf)

M2 2,0 – 2,5 1.7 – 2.2

M2.5 (hinges) 3,5 – 4,0 3.0 – 3.4

M2.5 (other) 2,5 – 3,0 2.2 – 2.6

M3 2,5 – 3,0 2.2 – 2.6

Standoff, hex 2,5 – 3,0 2.2 – 2.6

2-2 Removal and Replacement HP Omnibook XE4400

Disassembly Flowchart

The following diagram shows the general “path” you will use when disassembling the notebook to
access any particular component.

Figure 2-1. Disassembly Flow

HP Omnibook XE4400 Removal and Replacement 2-3

Removing the Battery

(User-Replaceable)

Required Equipment

• None.

Removal Procedure

• Slide the battery’s release latch, then pull the battery out of its compartment.

Figure 2-2. Removing the Battery

2-4 Removal and Replacement HP Omnibook XE4400

Removing a SDRAM Module

(User-Replaceable)

The notebook has no system memory built into its motherboard, but has two slots for SDRAM
modules. One slot contains an SDRAM module that was factory installed.

Note

Omnibook XE4400 models use only DDR266 SDRAM modules. Using the wrong type of module
prevents the notebook from booting.

Caution

Handle the SDRAM module only by its edges and provide proper grounding, or you might damage
the module through electrostatic discharge.

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and then remove the battery.

2. On the bottom of the notebook, loosen the captive screws holding the memory door, and then

remove the door.

3. Press outward on the latches at the sides of the SDRAM module to release it (the SDRAM module

pops up).

4. Carefully pull the SDRAM module out of the connector.

HP Omnibook XE4400 Removal and Replacement 2-5

Figure 2-3. Removing an SDRAM Module

Reassembly Notes

• Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully

inserted. Then press down on both sides of the SDRAM module until the latches snap closed.

2-6 Removal and Replacement HP Omnibook XE4400

Removing the Wireless LAN Mini-PCI Card

(User-Replaceable)

Certain notebooks include a wireless LAN mini-PCI card under the mini-PCI door on the bottom of the
notebook.

Caution

Handle the Mini-PCI card only by its edges and provide proper grounding, or you might damage the
card through electrostatic discharge.

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

1. Unplug the AC adapter, if present, and then remove the battery.

2. On the bottom of the notebook, loosen the captive screws holding the Mini-PCI door, and then

remove the door.

Caution

Be careful when connecting and disconnecting the antenna cables from the mini-PCI card.
Damaged cables or connectors can degrade notebook performance.

3. Disconnect the two antenna cables from the mini-PCI card.

4. Press outward on the latches at the sides of the mini-PCI card to release it (the mini-PCI card pops

up).

5. Carefully pull the mini-PCI card out of the connector.

Figure 2-4. Removing the Mini-PCI Card

Reassembly Notes

• Carefully press the mini-PCI card into the connector at an angle of about 30°, until it is fully

inserted. Then press down on both sides of the mini-PCI card until the latches snap closed.

HP Omnibook XE4400 Removal and Replacement 2-7

Removing the Hard Disk Drive

(User-Replaceable)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

Important

If you are installing a new hard disk drive, load the factory software and operating system on the
drive as described in “Recovering the Factory Software,” as shown on the next page.

1. Unplug the AC adapter, if present, and then remove the battery.

2. On the bottom of the notebook, remove the hard drive rubber screw plug and retaining screws.

3. Carefully pull the hard drive out of the notebook.

Screw,
M2.5×6mm (3)

Figure 2-5. Removing the Hard Disk Drive

2-8 Removal and Replacement HP Omnibook XE4400