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

4. Remove the screws from the drive and drive tray, then lift the drive out of the tray.

5. Remove the connector from the hard disk drive.

Screw, M3×4mm (4)

Figure 2-6. Removing the Hard Disk Drive Tray

Recovering the Factory Software

The following procedure describes how to recover the notebook’s original software and operating
system. This process can take up to 15 minutes to complete. (For more information about recovering
the factory software installation, see the readme.txt file in the root directory of the Recovery CDs.)

Caution

Do not interrupt the following process or unplug the AC adapter until the process completes.

1. Connect the AC adapter to the notebook.

2. Insert Recovery CD disk 1 into the notebook’s CD/DVD drive. If the notebook is turned off, use a

pin or straightened paper clip to press the release switch on the drive door to open it.

3. Turn on or restart the notebook.

4. When the HP logo appears, press Esc to display the Boot menu.

5. Use the arrow keys to select the CD/DVD drive as the first boot device, then press Enter.

6. When the Recovery CD dialog box appears, follow the displayed instructions. If prompted, accept

the recommended partition size.

To create the Utility partition without installing the factory software, click Advanced and select not

to install the operating system.

If the hard disk is partitioned into several logical drives, you can install the factory software on

drive C without affecting other drives. Click Advanced and select to restore only the C partition.

7. When prompted to reboot the notebook, press Ctrl+Alt+Del and follow any instructions that

appear.

HP Omnibook XE4400 Removal and Replacement 2-9

Replacing Small Parts

(User-Replaceable)

The user can replace the following small parts.

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

Part Replacement Procedure

Rubber screw plug (on
hard disk drive tray)

Door, mini-PCI

Door, memory

Feet, rubber (on bottom of
notebook)

Rubber cover, docking port

Cover, modem port

Insert a small flat-blade screwdriver under the rubber screw plug and pry it
loose. To replace, firmly press the adhesive side of the screw plug into the
recess.

On the bottom of the notebook, loosen the screws that secure the mini-PCI
door to the bottom case and then remove the door.

On the bottom of the notebook, loosen the screws that secure the SDRAM
module door to the bottom case and then remove the door.

Insert a small flat-blade screwdriver under the foot and pry it loose. To
replace, firmly press the adhesive side of the foot into the recess.

Grasp the rubber docking port cover with your fingers and gently remove it. To
replace, firmly press the docking port cover into the opening in the bottom
case.

Insert a small flat-blade screwdriver at the top of the cover and gently pry it
loose. To replace, insert the cover into the modem port opening.

2-10 Removal and Replacement HP Omnibook XE4400

Removing the Keyboard Cover/Speaker Assembly

(User-Replaceable)

Required Equipment

• Small Phillips screwdriver.

• Small flat-blade screwdriver.

Removal Procedure

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

2. Remove the two screws that secure the keyboard cover/speaker assembly to the rear of the

notebook.

3. Carefully insert a flat-blade screwdriver blade under the keyboard cover/speaker assembly near the

right end, and then gently pry up the center.

4. Carefully remove the keyboard cover/speaker assembly connector from the motherboard.

Caution

Be careful not to damage the antenna PCA that is connected to the left and right display assembly
hinges. Damaging either antenna PCA can degrade notebook performance.

Reassembly Notes

• If necessary, install a new label.

• Insert the tabs of the keyboard cover/speaker assembly into the mating slots under the keyboard,

and then press it into place.

HP Omnibook XE4400 Removal and Replacement 2-11

Screw,
M2.5×5mm (2)

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

2-12 Removal and Replacement HP Omnibook XE4400

Removing the Keyboard

(User-Replaceable)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove the keyboard cover/speaker assembly (page 2-11).

3. Remove the screws that secure the keyboard to the top case.

4. Lift up on the keyboard at the button cover end and then pull it toward the display assembly to

release the tabs from the top case.

5. Turn the keyboard over and disconnect the motherboard cable.

6. Remove the keyboard.

Reassembly Notes

Caution

Do not excessively bend or fold the keyboard cable. Excessive flexing can damage the keyboard
cable connectors.

• Lay the keyboard face down on the top case, forward of its normal position, then reconnect the

keyboard cable.

• Slide the metal tabs on the bottom of the keyboard into their slots in the top case, then lower the

keyboard into place.

HP Omnibook XE4400 Removal and Replacement 2-13

Screw,
M2.5×4mm (4)

Figure 2-8. Removing the Keyboard

2-14 Removal and Replacement HP Omnibook XE4400

Removing the Button Cover

(User-Replaceable)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

3. Carefully disconnect the lid switch cable from the button cover.

4. Remove the screws that secure the button cover to the top case.

5. Carefully remove the button cover from the top case, and then disconnect the underside

motherboard cable.

Screw,
M2.5×4mm (2)

Figure 2-9. Removing the Button Cover

HP Omnibook XE4400 Removal and Replacement 2-15

Reassembly Notes

Caution

Do not excessively bend or fold the button cover cable. Excessive flexing can damage the button
cover cable connections.

• Make sure the metal contacts of the button cover cable faces the rear of the notebook.

• Connect the button cover cable to the motherboard before installing the button cover.

2-16 Removal and Replacement HP Omnibook XE4400

Removing the CD/DVD Drive

(User-Replaceable)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

3. Remove the screws that secure the CD/DVD drive to the top case and motherboard.

Caution

Be careful when inserting your index finger into the top case opening. The edges are very sharp
and could cause you to injure your finger.

4. Place your index finger in the top case opening and push out on the CD/DVD drive to release it

from the motherboard.

5. Remove the CD/DVD drive.

Screw,
M2.5×5mm (2)

Figure 2-10. Removing the CD/DVD Drive

HP Omnibook XE4400 Removal and Replacement 2-17

Removing the Display Assembly

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove the keyboard cover/speaker assembly (page 2-11).

3. Remove the screws from the rear of the notebook.

4. Remove the screws from the left and right antenna PCAs. Relocate the antenna PCAs away from

the display assembly hinges.

5. Disconnect the display assembly cable from the motherboard.

6. Remove the screws that secure the display assembly to the top case. Note that there is a grounding

strap at the left hinge.

7. Lift the display assembly off of the notebook.

2-18 Removal and Replacement HP Omnibook XE4400

Screws,
M2.5×6mm (8)

Screws, Silver
M2x4mm (2)

Screws,
M2.5x5mm (6)

Figure 2-11. Removing the Display Assembly

Reassembly Note

• When connecting the left and right antenna PCAs, make sure they are parallel with the display

assembly hinges.

HP Omnibook XE4400 Removal and Replacement 2-19

Removing the Top Case

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• CD/DVD drive (page 2-17).

• Display assembly (page 2-18).

3. Remove the two screws from the rear of the bottom case.

4. Remove the screws from the middle and near the back of the top case.

5. Remove the screws from the bottom case.

6. At the CD/DVD drive opening, carefully unsnap the top case from the bottom case.

7. At the USB port, use your thumb to push out on the top case while lifting up on it.

8. Carefully disconnect the floppy drive and touch pad cables from the motherboard.

9. Remove the top case.

2-20 Removal and Replacement HP Omnibook XE4400

Screw,
M2.5×4mm

Screw,
M2.5×6mm

Screw,
M2.5×7mm (3)

Screw,
M2.5×5mm (16)

Screw,
M2.5×5mm (2)

Figure 2-12. Removing the Top Case

Reassembly Notes

• When replacing the top case make sure all cables are clear of the motherboard standoffs.

• Make sure the right antenna does not come into contact with any metal surface on the top case.

HP Omnibook XE4400 Removal and Replacement 2-21

Removing the Floppy Drive

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Remove the screws that secure the floppy drive to the top case.

4. Lift the floppy drive away from the top case.

Screw,
M2.5×4mm (4

Figure 2-13. Removing the Floppy Drive

2-22 Removal and Replacement HP Omnibook XE4400

Reassembly Notes

Caution

Do not excessively bend or fold the floppy drive cable. Excessive flexing can damage the floppy
drive cable connections.

• Connect the floppy drive cable to the motherboard with the blue tab facing the rear of the floppy

drive.

• Make sure you slip the floppy drive cable under the metal tab on the top case.

HP Omnibook XE4400 Removal and Replacement 2-23

Removing the Infrared (I/R) PCA

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Disconnect the cable from the motherboard.

4. Remove the screws that secure the I/R PCA to the bottom case.

5. Remove the I/R PCA.

2-24 Removal and Replacement HP Omnibook XE4400

Reassembly Notes

Caution

Use care when handling the I/R PCA cable. Damaging the cable can degrade notebook
performance.

• Make sure you lift up on the battery shield and then place the I/R PCA under it.

• Make sure you route the I/R PCA cable over the battery shield as shown below.

Screw,
M2.5×4mm (2)

Figure 2-14. Removing the I/R PCA

HP Omnibook XE4400 Removal and Replacement 2-25

Removing the Audio Control PCA

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Disconnect the cable from the motherboard.

4. Remove the screws that secure the audio control PCA to the bottom case.

5. Remove the audio control PCA.

2-26 Removal and Replacement HP Omnibook XE4400

Reassembly Note

Caution

Use care when handling the audio control PCA cable. Damaging the cable can degrade notebook
performance.

• Make sure the audio control PCA cable stays clear of the CD/DVD drive rail and motherboard

standoffs.

Screw,
M2.5×4mm (2)

Figure 2-15. Removing the Audio Control PCA

HP Omnibook XE4400 Removal and Replacement 2-27

Removing the PCMCIA Socket

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Remove the screws that secure the PCMCIA socket to the motherboard.

4. Remove the PCMCIA socket by disconnecting it from the motherboard.

Screw,
M2.5×6mm (4)

Figure 2-16. Removing the PCMCIA Socket

2-28 Removal and Replacement HP Omnibook XE4400

Removing the ESD Shield

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Remove the screws and standoffs that secure the ESD shield to the bottom case.

4. Carefully remove the ESD shield.

5. Remove the OOD guide.

HP Omnibook XE4400 Removal and Replacement 2-29

Reassembly Notes

Caution

Use care when handling the antenna PCA cable. Damaging the cable can degrade notebook
performance.

• Make sure you route the antenna PCA cable through the opening in the ESD shield.

• Replace the OOD guide first, and then make sure the notch in the ESD shield slides into the

corresponding opening in the OOD guide.

• Use care when replacing the ESD shield to avoid damaging the USB port.

Screw,
M2.5×6mm (2)

Standoffs (4)

Figure 2-17. Removing the ESD Shield

2-30 Removal and Replacement HP Omnibook XE4400

Removing the Heatsink (with Fans)

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

3. Remove the screws that secure the heatsink (with fans) to the motherboard.

4. Lift up on the heatsink (with fans) and then disconnect the fan cables from the motherboard.

5. Lift up on the small fan and disconnect it from the motherboard.

IMPORTANT: See the
Caution on the next
page before
reinstalling the
heatsink!

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

Screw, M2.5×4mm (3)

Caution

Do not spin the fan blades with your finger, or you could damage the fan’s bearings.

HP Omnibook XE4400 Removal and Replacement 2-31

Reassembly Notes

Caution

Each time you remove the heatsink from the notebook, you must also replace the heatsink’s
thermal pad to maintain optimum heat transfer. Use a sharp knife or scraper to carefully remove
the old thermal pad from the heatsink, then attach the new thermal pad.

• Replace the small fan first and then connect it to the motherboard. Note that the small fan gets

secured to the bottom case when replacing the top case.

• Install the heatsink screws in this order:

1. Install all four screws lightly.

2. Fully tighten the screws in the order marked on the heatsink.

2-32 Removal and Replacement HP Omnibook XE4400

Removing the CPU Module

(HP Authorized Service Providers Only)

Required Equipment

• Small flat-blade screwdriver.

Removal Procedure

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

• Heatsink (page 2-31).

3. Turn the lock screw one-half turn counterclockwise to release the CPU module (you should hear a

light snap). Carefully lift the CPU module off of its socket on the motherboard.

Figure 2-19. Removing the CPU Module

Reassembly Notes

• The CPU module is keyed for installation, and can be inserted only one way.

• Carefully insert the CPU module into the motherboard, and turn the lock screw one-half turn

clockwise to secure the CPU module.

• Be sure to replace the thermal pad on the heatsink, as described in the reassembly notes on

page 2-32.

HP Omnibook XE4400 Removal and Replacement 2-33

Removing the Motherboard

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

Removal Procedure

Note: Before Replacing the Motherboard

If possible, record the computer’s electronic serial number before you replace the motherboard. You
will then store the electronic serial number in the EEPROM on the new motherboard using the Service
Utility floppy disk.

1. Download the service package for the Omnibook XE4400 (technology code KD) from the
Partnership web site (see page vii), and create a Service Utilities floppy disk as described in the
package’s Readme file.

2. Plug in an AC adapter.

3. Insert the Service Utilities floppy disk in the floppy drive.

4. Turn on the notebook. When the HP logo appears (on either the built-in display or the external
monitor), press Esc to display the boot menu, then choose Removable Device and boot from the
floppy disk.

5. Select the Serial Number option from the boot menu.

6. When prompted, type A for the automatic update option. This stores the current system data from
the old motherboard on the floppy disk.

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

2. Remove these additional assemblies:

• Hard disk drive (page 2-7).

• Keyboard cover/speaker assembly (page 2-11).

• Keyboard (page 2-13).

• Button cover (page 2-15).

• Display assembly (page 2-18).

• Top case (page 2-20).

• Heatsink (page 2-31).

2-34 Removal and Replacement HP Omnibook XE4400

Caution: Wireless Models

Be careful when removing and attaching antenna cables. Damage to cables or connectors can
degrade performance.

3. Wireless models only: Remove the mini-PCI door and unplug the two antenna cables from the

mini-PCI card. Do not remove the mini-PCI card at this time.

4. Remove the screws that secure the motherboard to the bottom case.

5. Carefully lift the motherboard out of the bottom case.

6. If present, remove the modem port cover.

Reassembly Notes

Screw,
M2.5×5mm (7)

Figure 2-20. Removing the Motherboard

Wireless Models Only

• Before installing the motherboard, make sure the round coaxial cables from the antenna PCAs are

held in place by the clips in the bottom case.

• Make sure there is sufficient length to the front antenna PCA cables so they can easily be

connected to the mini-PCI card.

HP Omnibook XE4400 Removal and Replacement 2-35

Reassembly Procedure

Caution

Be extremely careful when replacing the motherboard. The motherboard has EMI springs attached
to it that can bend very easily. Bending any EMI spring could cause a motherboard short.

Note: Reprogramming the BIOS IC

A new BIOS IC contains only enough basic programming to enable the notebook to boot. After
installing a new motherboard, you must reprogram the BIOS IC, preferably with the latest BIOS—
see page 2-38.

1. Remove the following components from the old motherboard and install onto the new

motherboard:

• CPU module

• Wireless LAN mini-PCI card (if present)

• SDRAM modules

2. Make sure you route the I/R PCA cable over the battery shield (page 2-24).

3. Make sure the motherboard does not cover the USB, firewire, or modem ports.

4. Follow the reassembly notes in the section entitled “Removing the Motherboard” on page 2-35.

Note: After Replacing the Motherboard

If present, insert the modem port cover into the modem port opening. Afterwards, you must use the
Service Utility floppy disk to store the system data and display information in the EEPROM on the new
motherboard. To do so:

1. Plug in an AC adapter.

2. Insert the Service Utilities floppy disk in the floppy drive.

3. Turn on the notebook.

4. If you hear 5 beeps, press F1 to update the display data stored on the motherboard. Let the
notebook reboot and go to the next step.

5. Select the Serial Number option from the boot menu.

6. If you successfully stored system data on the floppy disk before removing the old motherboard,
type A for the automatic update. This restores the old system data on the new motherboard.

If you did not store system data, type M for the manual update option. Enter the serial number from the
bottom of the notebook—you might have to contact an HP support center to do this.

2-36 Removal and Replacement HP Omnibook XE4400

Replacing Components on a Bottom Case

Reassembly Procedure

1. Transfer the plastic wireless panel, and if present, the docking port cover from the old bottom case

to the new bottom case.

2. Install a new Microsoft Product ID label.

3. Transfer the old serial number label and install a new overlay, or create a new serial number label

using the steps below.

4. Follow the “Reassembly Notes” on page 2-35.

Installing a New Serial Number Label

Download the latest version of the serial number label template (Microsoft Word format) from the
Partnership web site (see page vii) under Support/Service in Technical Support Information. The latest
version includes fields for warranty period and manufacturing location. Store the template with other
Word templates on a PC connected to a laser printer.

1. Open a new document based on the serial label template.

2. Enter the information from the old serial label, and print the new label on plain white paper. The

new label does not have barcodes.

3. Carefully cut out the new serial label just inside the border and place it into the inner recess in the

bottom case. The bottom of the label goes toward the front of the case.

4. Make sure all regulatory labels that were on the old bottom case are also on the new bottom case.

5. While holding the paper label in place, attach a serial label overlay into the outer recess. The

overlay covers and protects the serial label.

HP Serial Number (S)TW711A1234 1YR

(1P) F2072 W EA MFG# TW711A1234

Made in Taiwan

Figure 2-21. Example of Serial Number Label

HP Omnibook XE4400 Removal and Replacement 2-37

Replacing the Left and Right Antennas

If you need to remove or replace an antenna, see the figure below.

Caution

Handle the connector ends of the antennas carefully. Failure to do so could degrade notebook

performance.

Handle the antenna routing metal tabs in the bottom case carefully. These tabs can be easily

broken.

1. Carefully remove both antennas from the old bottom case.

2. Route both antenna cables through the new bottom case as shown below. Make sure you leave

enough room at the cable connector end to connect to the mini-PCI card.

3. Make sure the right antenna PCA cable does not interfere with the battery latch mechanism.

Figure 2-22. Replacing the Antennas

Replacing a PCMCIA Door

If you need to remove or replace a PCMCIA door, see the figure below.

Figure 2-23. Removing a PCMCIA Door

2-38 Removal and Replacement HP Omnibook XE4400

Repairing the BIOS IC

(HP Authorized Service Providers Only)

The notebook’s BIOS IC cannot be replaced separately. If it is defective, you must replace the
motherboard. In some cases, however, you might be able to reprogram a malfunctioning BIOS IC using
either e-DiagTools for Windows, a BIOS floppy disk, or a Crisis Recovery floppy disk.

If the notebook will boot sufficiently, use e-DiagTools for Windows or a BIOS floppy disk to
reprogram the BIOS IC. If you cannot boot the notebook adequately, use a Crisis Recovery floppy disk.
See below for instructions for all three methods.

Using e-DiagTools for Windows

Caution

The BIOS update completely replaces the previous BIOS, so follow these directions exactly or

you might damage the notebook. The BIOS update also resets the configurations in the BIOS
Setup utility—except for BIOS passwords—so record these before performing the update.

Update the notebook’s BIOS as follows:

1. In Windows, exit any programs that are running.

2. Undock the notebook if it is docked, and remove any PCMCIA cards from it.

3. Connect the AC adapter to the notebook.

4. Connect any cables or equipment needed to connect to the Internet.

5. Click Start, Programs (or All Programs), Hewlett-Packard, Notebook, HP e-DiagTools,

e-DiagTools for Windows.

6. Click Update, select Download New and click OK. Follow the instructions that appear. Once the

update process begins, do not interrupt it.

The first time you make an Internet connection from this program on a particular unit, click
Change Settings in the Connect window to define your connection settings.

7. When the process completes, press the power button to reset the notebook.

BIOS updates are available from the HP Business Support web site (www.hp.com/go/bizsupport).
Installation utilities and instructions for creating a BIOS floppy disk are provided with the updates.

HP Omnibook XE4400 Removal and Replacement 2-39

Using a BIOS Floppy Disk

If you do not have a BIOS floppy disk, download the package from the Partnership web site (see page
vii) under Product Support Information in the Service and Support Library. Follow the instructions for
creating the BIOS floppy disk.

Caution

Make sure to use the correct BIOS floppy disk for the Omnibook model you are repairing. The
program does not verify the Omnibook model, so you could accidentally install the wrong BIOS.

1. Insert the BIOS floppy disk in the floppy disk drive.

2. Turn on the notebook and allow it to boot from the BIOS floppy disk.

If the notebook does not turn on at all, do the following to boot from the BIOS floppy disk:

a. Unplug the AC adapter.

b. Press and hold Fn+B

c. Plug in the AC adapter.

d. Release Fn+B.

Note: If the notebook will not boot from the BIOS floppy disk, try plugging the boot-block jumper

into the notebook’s parallel port. See the wiring diagram below.

3. The display goes blank for a minute or more while the BIOS is reprogrammed.

Note: If you plugged in a boot block jumper, unplug it before the notebook automatically reboots.

4. After the BIOS reprograms itself, check the BIOS version to make sure it is the latest version.

If necessary, download the latest BIOS version and reprogram the BIOS IC.

1

14

Figure 2-24. Boot-Block Jumper

13

25

2-40 Removal and Replacement HP Omnibook XE4400

Removing Other Components

(HP Authorized Service Providers Only)

Required Equipment

• Small Phillips screwdriver.

• Small flat-blade screwdriver.

Removal Procedure

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

2. Remove the assemblies and follow the additional steps listed in the table below.

Table 2-5. Removing Omnibook XE4400 Components

Component Removal Procedure Additional Steps

Battery, CMOS

Case, bottom

Case, top

CD/DVD drive

Cover, button

CPU module

Display assembly

Doors, PCMCIA

Floppy drive

Hard disk drive

Heatsink (with fans)

Keyboard

Keyboard
cover/speaker
assembly

Keyboard cover

(page 2-11).
Keyboard (page 2-13).
Button cover (page 2-15).
CD/DVD (page 2-17).
Display (page 2-18).
Top case (page 2-20).
Heatsink (page 2-26).
Motherboard (page 2-34).
See page 2-37.

See page 2-20.

See page 2-17.

See page 2-15

See page 2-33.

See page 2-18.

Keyboard cover

(page 2-11).
Keyboard (page 2-13).
Button cover (page 2-15).
CD/DVD (page 2-17).
Display (page 2-18).
Top case (page 2-20).
Heatsink (page 2-26).
Motherboard (page 2-34).
See page 2-21.

See page 2-8

See page 2-26.

See page 2-13.

See page 2-11

Reassembly Notes: After replacing the CMOS
battery, set the correct time and date using the BIOS
Setup utility or Date/Time in the Control Panel.

See page 2-37.

HP Omnibook XE4400 Removal and Replacement 2-41

Component Removal Procedure Additional Steps

Panel, wireless

PCA, audio control

PCA, I/R

PCA, left and right
antennas (wireless
models only)

PCA, motherboard

Shield, ESD

Socket, PCMCIA

Keyboard cover

(page 2-11).
Keyboard (page 2-13).
Button cover (page 2-15).
CD/DVD (page 2-17).
Display (page 2-18).
Top case (page 2-20).
Heatsink (page 2-26).
Motherboard (page 2-34).
See page 2-26

See page 2-24.

Keyboard cover

(page 2-11).
Keyboard (page 2-13).
Button cover (page 2-15).
CD/DVD (page 2-17).
Display (page 2-18).
Top case (page 2-20).
See page 2-34.

See page 2-29

See page 2-28

Press the tabs on both sides of the panel and then lift
it from the bottom case.

Disconnect the front antenna PCA cables from the
mini-PCI card (page 2-7).

Be careful not to bend the metal tabs on the bottom
case when removing or replacing either of the two
antenna PCAs.

2-42 Removal and Replacement HP Omnibook XE4400

Troubleshooting and Diagnostics

This chapter includes troubleshooting and diagnostic information for testing the functionality of the
notebook, and for identifying faulty components:

• Troubleshooting information

Checking for customer abuse (page 3-3).



Troubleshooting the problem (page 3-3).



Verifying the repair (page 3-4).



Suggestions for troubleshooting (page 3-5).



• Diagnostic tools

e-Diagtools diagnostic program (page 3-17).



Power-on self-test (page 3-20).



Sycard PCCtest 450/460 PC card (page 3-25).



3

Windows Management Instrumentation (page 3-26).



BIOS Setup utility (page 3-27).



HP Omnibook XE4400 Troubleshooting and Diagnostics 3-1

Troubleshooting

The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality
repair, follow the basic troubleshooting steps shown below.

Check the customer's description
of the problem and any supporting
information.

Check for customer abuse.

Try to duplicate the customer's
problem.

Troubleshoot the problem using:

- Diagnostic tools.

- Troubleshooting suggestions.

Verify the repair by testing the
functionality of the complete unit.

Figure 3-1. Basic Troubleshooting Steps

3-2 Troubleshooting and Diagnostics HP Omnibook XE4400

Checking for Customer Abuse

Some notebooks might appear to have been damaged by customer abuse. Use these guidelines to help
determine if this is the case:

• If the shipping box is seriously damaged, customer abuse cannot be declared.

• If the damage could have a cause other than customer abuse, customer abuse cannot be declared.

• If the notebook shows any of the following, customer abuse is declared:

Missing parts.



Broken plastic parts.



Parts not original to the notebook.



Damaged or missing keys on the keyboard.



Table 3-2 lists additional criteria for determining customer abuse to specific parts of the notebook.

Important

Parts damaged by customer abuse are not covered by the warranty.

Troubleshooting the Problem

Record pertinent information about the notebook:

• Model and serial number.

• Operating system and version.

• Software version (stored in hidden file c:\version.inf).

• BIOS version.

• Accessories and peripherals used.

Analyze the problem:

Observe Symptoms.

•

Using the customer’s information, try to duplicate the problem. Determine

how the problem differs from proper behavior. Also, note the functions that do work properly.

•

Separate Problems.

• Consider Causes.

If there are multiple symptoms, separate them into distinct problems.

Keep in mind possible causes for each problem. Use the diagnostic tools and

troubleshooting suggestions to help find possible causes.

The e-Diagtools diagnostic program tests most of the notebook’s components using automatic



and interactive tests, and is your primary troubleshooting tool. Other tools include the power­on self-test, WMI/Toptools (if installed), the BIOS Setup utility, and the Sycard PCCtest.
Table 3-1 on page 3-5 shows how you can use these tools to isolate the cause of the
notebook’s problem.

The troubleshooting suggestions on page 3-6 include general suggestions for repairing



notebooks that show specific failure symptoms.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-3

Swapping modules that might be defective with others known to be good is generally an ideal way to
find the module responsible for the problem. A failure symptom is rarely caused by more than one
module, so you will not usually need to replace more than one to correct a particular failure.

After you replace a module, the notebook will normally be in a confused state and lock up when you
apply power. If this happens, press the reset button: this turns the notebook off, so that you can restart it
in a known state.

Verifying the Repair

Before returning the repaired notebook to the customer, verify the repair by running the following tests:

• e-

Diagtools Basic Diagnostic Test.

(page 3-17).

–and–

•

Function Tests.

17).

–and–

•

Failed Tests.

Run tests that check the repaired function, such as those in e-Diagtools (page 3-

Run any other tests that failed during troubleshooting.

Run the basic test of the e-Diagtools diagnostic program

3-4 Troubleshooting and Diagnostics HP Omnibook XE4400

Suggestions for Troubleshooting

Table 3-1. Scope of Diagnostic Tools

Function e-Diagtools Power-On

Self-Test

Bootup
Processor
Memory
Fan
Batteries

Display
Hard disk
Floppy drive
Keyboard
Audio
Serial
Parallel
LAN
Modem
Wireless
Infrared
PS/2 port
USB
Port replicator
PCMCIA
IEEE 1394
AC adapter

* Test might be available only on certain units.

†

Use an external keyboard to exercise the port. Run the external 101-key test.

Tests Tests Describes Describes
Tests

Tests Describes Configures
Tests Tests Describes Configures
Tests* Tests Describes Configures
Tests Tests Describes
Tests
Tests* Describes Configures
Tests Describes Configures
Tests Describes Configures

†

Tests

Tests Tests Describes
Tests

Tests Describes Configures
Tests Describes

Tests (CMOS
battery only)

Sycard
PCCtest 450

WMI/
Toptools
(if installed)

Describes

Describes Configures

Describes Configures

Status

BIOS Setup

Configures
Configures

Configures

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-5

If you cannot isolate the cause of a problem using the above diagnostic tools, use the suggestions in the
following table to help find the problem.

Table 3-2. Troubleshooting Suggestions

Symptom Call Center:

Suggestions

To help determine likely causes of a problem, determine which replaceable modules are involved in the system
function and what roles they play: see the figure on page 1-12 and the table on page 1-13.

Startup

Does not boot on
AC or battery.

Beeps once, spins
hard disk, repeats,
but does not boot.

Does not boot on
battery, but boots
on AC.

Does not boot from
floppy drive.

Does not boot from
CD in CD/DVD
drive.

Check power source.
Press and hold power button

to turn notebook off, then
press power button to turn
notebook on.

Unplug AC adapter, remove
the battery and any PC
cards, press reset button to
turn notebook off, then
reconnect power and try
again.

Do not use touch pad while
booting or resuming.

Remove all but one SDRAM
module and try again.
Reinsert any other SDRAM
module and try again.

Make sure at least one
SDRAM module is installed.

Make sure battery is properly
installed and fully charged.
Check battery level on
battery LEDs.

Check battery contacts. If
available, try another battery.

Make sure floppy disk is
bootable.

Use BIOS Setup to check
default boot order.

Make sure CD is bootable.
Use BIOS Setup to check

default boot order.
Restart notebook.

Repair Center:
Likely Causes

AC adapter.
SDRAM module.
CPU module.
Button cover.
Motherboard.
Display assembly.
Hard drive.

SDRAM module.

Battery or contacts.
Motherboard.

Floppy disk or floppy
drive.

Motherboard.

CD/DVD drive.
Motherboard.

Repair Center:
Comments

Check AC adapter. Remove
all but one SDRAM module
and try again.

If power status light does not
turn on, reprogram BIOS,
replace top case, replace
motherboard.

If power status light turns on
but display remains off, try
external monitor. If monitor
shows successful boot,
replace display assembly. If
monitor shows activity but
BIOS does not complete,
replace display assembly. If
monitor is blank, replace
button cover, replace
motherboard.

If power status light and
display turn on, BIOS
completes, but OS does not
start from hard disk or floppy
drive, replace CPU module,
replace motherboard. If OS
starts from floppy drive,
reload hard drive, replace
hard drive.

Make sure floppy drive is
installed and connected
correctly.

Make sure CD/DVD is
installed and connected
correctly.

3-6 Troubleshooting and Diagnostics HP Omnibook XE4400

Symptom Call Center:

Suggestions

Sluggish startup or
shutdown.

Error message
such as “Invalid
system disk” or
“Auto IDE error”.

Password forgotten. Verify proper ownership, then

Power

No power. Make sure charged battery is

Notebook has short
operating time
when on battery.

Use Tools tab in disk’s
Properties sheet to check
hard disk. Use Disk
Defragmenter to optimize
hard disk.

Delete temporary and
unneeded files.

Check for disk in floppy drive.
Check boot order in BIOS

Setup.
Remove and reinstall hard

drive.

follow removal procedure
with owner and record
appropriate data—see page
5-1.

installed or AC adapter
connected.

Try another battery or AC
adapter if available.

Turn down display
brightness.

Check timeout settings in
Power in Control Panel.

Check power management
settings in BIOS Setup. Try
default settings.

Battery gauge might need
calibration. Run HP Battery
Optimizer from Start menu.

Certain applications can
cause excess CPU and
power usage. (User can get
Intel Power Monitor from
www.intel.com and monitor
CPU load.)

When playing DVD movies
on battery power, use Power
Options in Control Panel to
select Portable/Laptop power
scheme.

When using applications with
automatic save feature (such
as MS Word), extend save
time or disable to reduce
hard disk access and power
usage.

PCMCIA card use can affect
battery life. Some PCMCIA
cards draw power even while
not in use.

Heavy modem use can affect
battery operating time.

Repair Center:
Likely Causes

Hard drive.

Hard drive contacts.
Hard drive.

AC adapter.
Battery.
Motherboard.

Battery.
Motherboard.

Repair Center:
Comments

If notebook boots from floppy
drive, check for corrupt files
on hard drive, use

to reinstall factory

CDs

software onto hard drive,
replace hard drive.

User must call Technical
Support and provide proof of
ownership. Password
removal is restricted to
certain sites. See page 5-1.

Battery capacity often
decreases after a year or
more.

Recovery

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-7

Symptom Call Center:

Suggestions

Turns off
immediately after
turning on.

Does not run on
battery; empty
battery indication.

Beeps repeatedly. Notebook beeps repeatedly

Battery does not
charge.

AC adapter does
not power
notebook.

Battery indicator is
inaccurate.

Standby/resume

General problems. Close all applications before

Battery may be extremely
low. Plug in AC adapter or
insert charged battery

Check battery and contacts.
Try another battery if
available.

when battery is low. Connect
AC adapter or replace
battery.

Make sure AC adapter has
correct power rating.

Make sure AC adapter is
connected properly and
battery installed properly.

Check battery contacts. If
available, try another battery
and AC adapter.

Move notebook away from
any nearby heat source.
Unplug AC adapter and allow
battery to cool. Check for
blocked air vents.

Try another AC adapter, if
available.

Time Remaining is an
estimate based on
notebook’s power use at that
moment. It therefore
depends on current task, and
assumes power will be used
at that rate until battery runs
out. So if notebook is
currently using good deal of
power (such as when reading
CD or DVD), Time
Remaining likely shows less
time than actually remains.

entering (or allowing
notebook to enter) Standby
or Hibernate mode.

If problem appears after
installing new software
(including drivers), uninstall
that software. Contact
software vendor for additional
support.

Repair Center:
Likely Causes

Battery.

Battery or contacts.
Motherboard.

Battery.

Battery or contacts.
AC adapter.
Motherboard.
Heatsink.

AC adapter.
Motherboard.

Repair Center:
Comments

Check battery and AC
adapter.

Check heatsink.

AC adapter cannot be
repaired, and must be
replaced.

3-8 Troubleshooting and Diagnostics HP Omnibook XE4400

Symptom Call Center:

Suggestions

Notebook resumes
slowly from Standby
mode.

Does not suspend
to Standby mode as
expected.

Does not
automatically enter
Hibernate mode as
expected.

Display

Dark display, no
light.

White display. Adjust display brightness. Display assembly.

Erratic display. Display cable

Bright or missing
pixels or lines.

Punctured display. Declared to be caused by

Vertical crack near
center of display.

Scratched display
glass.

Notebook can take a minute
or longer to resume if
network card is installed.
Blinking cursor appears while
system is loading and
checking hardware and
network connections. When
hardware is reinitialized,
Windows desktop appears.

Notebook won’t suspend if
connection to another
computer is active.

If notebook is busy, it
normally finishes current
operation before suspending.

Make sure hibernate support
is enabled in Power in
Control Panel. Also, make
sure Hibernate timeouts
(Power Schemes tab) for AC
and battery power are not set
to Never.

Make sure notebook is
turned on and warmed up.

Check power supply.
Make sure SDRAM modules

are installed properly.
Adjust display brightness.
Press Fn+F5 several times.
Try external monitor.

See quality statement on
page 5-2.

Repair Center:
Likely Causes

Display cable

connection.
SDRAM modules.
CPU module.
Display assembly.
Motherboard.

Button cover.

connection.
Button cover.
Display assembly.
Motherboard.
Display cable

connection.
Display assembly.

Usually caused by
closing display with
pencil-sized object on
keyboard.

Repair Center:
Comments

Check cable connections.
Replace SDRAM modules.
Make sure CPU module is

installed properly, replace
CPU module.

Check display cable
connections, replace display
assembly.

If external monitor displays
no image, replace
motherboard.

Check display cable
connection.

Check display cable
connection.

See quality statement on
page 5-2.

customer abuse.
Declared to be caused by

customer abuse.

Declared to be caused by
customer abuse.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-9

Symptom Call Center:

Suggestions

Local area of dark
or light discoloration
visible when display
is on.

External display
does not work.

Hard disk

Hard disk never
spins.

Hard disk makes
clunking or
scratching noise.

Hard disk makes
buzzing or whining
noise.

Files corrupted. Run virus scan program.

Disk capacity less
than normal.

Disk’s reported
capacity is less
than actual size

Floppy drive

General problems. No response from floppy

Check connections.
Press Fn+F5 several times.
Try display on another

computer.

Check power source.
Remove and reinstall hard

drive. Check connector.
Back up disk immediately.
Was notebook or drive

dropped?
Back up disk immediately.
Check hard disk installation.
Check for alternate noise

sources, such as PCMCIA
drive or fan.

Check hard disk using Tools
tab in disk’s Properties sheet.

Test hard disk drive with
e-Diagtools diagnostics.

Back up files if possible, then
use

Recovery CDs

reformat hard disk and
reinstall factory software.

Check hard disk using Tools
tab in disk’s Properties sheet.

Check partitions using
Control Panel, Administrative
Tools, Computer
Management under Storage.

Use Recovery CDs to
reformat hard disk and
reinstall factory software.

Hard disk allocates
approximately 20 MB to
diagnostic software. This
space is unavailable for other
uses, and not included in
hard disk capacity reported
by Windows.

drive.

to

Repair Center:
Likely Causes

Caused by excessive
pressure applied to
area on screen.

External display.
Motherboard.

Hard drive or

connector.
Motherboard.
Hard drive. Check notebook and drive for

Depends on noise

source.

Hard drive.

Floppy drive.
Motherboard.

Repair Center:
Comments

Declared to be caused by
customer abuse.

If drive case is damaged,
drive may not operate
properly.

evidence of customer abuse.

Make sure floppy drive is
installed and connected
correctly.

3-10 Troubleshooting and Diagnostics HP Omnibook XE4400

Symptom Call Center:

Suggestions

CD/DVD drive

Particular CD or
DVD not playing
properly.

Cannot read any
CD or DVD.

DVD movie stops
playing.

Region Code error. DVDs contain embedded

“System Error:
Unable to read
drive” message.

No DVD or CD-RW
software on
notebook.

All DVD play is
erratic.

Keyboard

Some or all keys do
not work properly.

Check disk for proper
insertion, dirt, or damage.
Clean with soft cloth or
replace as needed.

If CD was created on CD-RW
drive, try using HP certified
media. Read and write
quality can vary for other
media.

Restart notebook.
Make sure CD/DVD drive is

installed properly.
DVD may be double-sided.
Movie may be paused. Press

Play button.

regional codes that prevent
them from playing outside
region in which they are sold.
This error occurs when trying
to play DVD intended for
different region.

Important:

allow region code to be
changed only a limited
number of times (usually no
more than four). When this
limit is reached, last change
is hard-coded on DVD drive,
and is permanent. Refer to
DVD player software help for
details.

Make sure disk is clean,
undamaged, and inserted
correctly. Clean with soft
cloth or replace as needed.

Wait 5 to 10 seconds after
closing tray before pressing
Play.

Restart notebook.
If software was removed, use

the Recovery CDs to reinstall
factory software.

Some DVDs include software
called “PC Friendly”. This
software can cause errors or
erratic play. If needed,
uninstall PC Friendly and
restart notebook.

Check settings in Control
Panel.

Most DVD drives

Repair Center:
Likely Causes

CD/DVD drive.

CD/DVD drive.
Motherboard.

Keyboard.
Motherboard.

Repair Center:
Comments

HP warranty does not cover
expense of correcting this
situation.

Make sure CD/DVD drive is
installed properly.

Try reinserting ribbon cable
in connector on motherboard.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-11

Symptom Call Center:

Suggestions

Embedded numeric
keypad does not
work.

PS/2 keyboard and
mouse with Y­adapter do not
work.

Touch pad

General problems. Reset notebook (see page 1-

Special touch pad
features not
working.

Click button does
not work.

Memory

Out of memory
error.

Notebook does not
boot after adding
SDRAM.

Audio

No sound audible. Increase sound volume.

Sound does not
record.

Press Fn+F8 to activate
numeric keypad, and Lock
key to turn on number lock.

Avoid touching touch pad
while booting or resuming.

Check devices separately. Y-adapter.

8).
Check settings in Control

Panel. Make sure touch pad
is enabled in Mouse
Properties.

By default, touch pad is
disabled if external PS/2
mouse is connected, Use
BIOS Setup to check
settings.

Avoid touching touch pad
while booting or resuming.

In Mouse Properties, select
Synaptics PS/2 TouchPad
driver. (Driver is installed
from \hp\drivers\touchpad.)

Make sure C drive has
adequate free space. Delete
temporary and unneeded
files.

Use memory troubleshooter
in Windows Help.

Not all third-party memory
cards have been tested for
use with notebook.

Use only DDR-266 SDRAM
modules.

Check whether sound is
enabled (mute button and
software controls).

Check for sound resource
conflicts in Device Manager.

Test audio with e-Diagtools
diagnostics.

Use an external microphone.
Check software controls.
Test audio with e-Diagtools

diagnostics.

Repair Center:
Likely Causes

Keyboard.
Motherboard.

PS/2 device.
Motherboard.

Top case.
Motherboard.

Top case.
Motherboard.

Top case.
Motherboard.

SDRAM module.

SDRAM module.

Top case.
Keyboard

cover/speaker

assembly.
Button cover.
Motherboard.

Button cover.
Motherboard.

Repair Center:
Comments

Check operation using
headphones or external
speakers (audio control
PCA).

Make sure keyboard
cover/speaker assembly
cable is connected.

3-12 Troubleshooting and Diagnostics HP Omnibook XE4400

Symptom Call Center:

Suggestions

Serial/Parallel/USB

General problems. Check connections.

Restart notebook.
Use troubleshooters in

Windows Help.
Check settings in Control

Panel.
Check port settings in Device

Manager.
Test ports with e-Diagtools

diagnostics.
For USB: contact device

vendor and HP Notebook
web site (see page vii) for
latest USB drivers.

For USB: if the device is
powered by the USB port, try
the other port.

Modem

General problems. Check settings in Control

Panel.
Open hardware Device

Manager. If modem is
disabled, try to enable. If
modem has a conflict, try
disabling another device.

Use analog telephone line (2,
3, or 4 wires), not PBX or
digital line. In a hotel, ask for
data line.

Try disabling error correction
and data compression.

Test modem with e-Diagtools
diagnostics.

Repair Center:
Likely Causes

Motherboard.

Motherboard.

Repair Center:
Comments

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-13

Symptom Call Center:

Suggestions

LAN/network

General problems. Check cables and

connections.
Try connecting notebook to

another network station (if
applicable). If green light next
to LAN port does not light,
LAN cable may not be
connected to network or
network may be down.

Use networking
troubleshooter in Windows
Help.

Check settings in Control
Panel.

Make sure LAN cable is
Category 3, 4, or 5 for
10Base-T operation, or
Category 5 for 100Base-TX
operation. Maximum cable
length is 100 meters (330
feet).

Test LAN with e-Diagtools
diagnostics.

Infrared

General problems. Infrared is disabled and no

drivers installed as shipped.
(Drivers are included.)

Make sure line between
infrared ports is not blocked,
ports face each other
squarely and are no more
than 1 meter apart. Sunlight,
heat from nearby equipment,
or other sources of infrared
radiation can cause
transmission errors.

Open Hardware Device
Manager. Try to enable the
infrared port.

Remove any PC cards from
notebook (possible IRQ
conflict).

For fast-IrDA, check for DMA
conflict with ECP parallel
port.

Repair Center:
Likely Causes

Motherboard.

Motherboard.
I/R PCA.

Repair Center:
Comments

3-14 Troubleshooting and Diagnostics HP Omnibook XE4400

Symptom Call Center:

Suggestions

Wireless

General problems. Check TCP/IP setup in

Control Panel.
Check SSID, channel, and

encryption settings.

One-Touch button
problems

Buttons not working
properly.

On-screen display
does not appear
when button is
pressed.

PCMCIA

General problems. Restart notebook.

AC adapter

Does not power
notebook.

Motherboard

Evidence of spilled
liquid.

Bent or broken
connectors, or burnt
component.

Motherboard
cracked.

Miscellaneous

Clock loses time Plug in AC adapter for 24

Notebook gets
abnormally hot.

Make sure correct
applications are associated
with buttons in One-Touch
tab of Keyboard in Control
Panel.

Make sure Onscreen Display
is enabled in One-Touch tab
of Keyboard in Control Panel.

Try card in another computer.
If card requires an IRQ, make

sure one is available.
In Device Manager, refresh

device list and check for
conflicts.

Download current drivers
from card manufacturer’s
web site.

Make sure AC adapter has
correct power rating.

Try another AC adapter, if
available.

hours to charge CMOS
battery.

Always set notebook on a flat
surface, so air can flow freely
around and underneath it

Make sure air vents are not
blocked.

Games and other programs
that drive CPU usage toward
100% can contribute.

Repair Center:
Likely Causes

Mini-PCI card.
Antenna PCAs.
Motherboard.

Keyboard

cover/speaker

assembly.
Button cover.
Motherboard.

PCMCIA socket.
Motherboard.

AC adapter.
Motherboard.

CMOS battery.
Motherboard.

Heatsink. Check heatsink for damage

Repair Center:
Comments

Make sure all cables are
properly connected to mini­PCI card and motherboard.
Check for damaged coaxial
cables or connectors.

Using a flashlight, look for
bent pins inside the PCMCIA
socket.

If only one slot is affected,
replace PCMCIA socket. If
both slots are affected,
replace motherboard.

AC adapter cannot be
repaired and must be
replaced.

Declared to be caused by
customer abuse.

Declared to be caused by
customer abuse.

Declared to be caused by
customer abuse.

Charge CMOS battery.

or proper fan operation.
Check thermal contact

between CPU and heatsink.
Replace thermal pad if
needed.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-15

Symptom Call Center:

Suggestions

Notebook pauses
or runs sluggishly.

Notebook still on
but stops
responding.

Accessories

Port replicator
problems.

May be normal Windows
behavior (background
processing can affect
response time).

Certain operations (such as
virus scanning or file
browsers) can affect
performance.

Press Ctrl+Alt+Del to see if
an application is not
responding.

Restart notebook.
If hard disk has spun down to

conserve power, it can take
several seconds to spin up
(you can hear this). Use
Control Panel to modify hard
disk power settings.

Check for overheating—see
previous symptom.

If notebook’s hard drive
frequently runs (as indicated
by hard drive light on front of
notebook) while notebook
appears to be paused or
running slowly, consider
installing additional SDRAM.

Make sure hard drive has
adequate free space. Delete
temporary and unneeded
files.

Press Ctrl+Alt+Del and end
any application not
responding.

Reset notebook (see page 1-

8).

Check notebook’s power
supply.

Check settings in BIOS
Setup.

Repair Center:
Likely Causes

CPU module.
Motherboard.

Port replicator.
Motherboard.

Repair Center:
Comments

If notebook slows after period
of continuous activity, check
heatsink—see previous
symptom.

Port replicator is not
repairable, and must be
exchanged.

3-16 Troubleshooting and Diagnostics HP Omnibook XE4400

Diagnostic Tools

This section describes the following diagnostic tools you can use for troubleshooting and repairing the
notebook:

• Notebook e-Diagtools diagnostic program (below).

• Power-on self-test (page 3-19).

• Sycard PCCtest 450 PC card (page 3-25).

• Windows Management Instrumentation (page 3-26).

• BIOS Setup utility (page 3-27).

e-Diagtools Diagnostic Program

The hardware diagnostic programs provide two levels of testing:

• User-level testing using a basic hardware test.

• Advanced testing using individual hardware tests.

The tests are designed to run after the system reboots, so that the notebook will be in a predictable state
during the tests. The tests are non-destructive, and are intended to preserve the state of the notebook.
The notebook reboots when you exit the program so drivers can be loaded.

Updating e-Diagtools

You can download the latest version of e-Diagtools using e-Diagtools for Windows.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-17

Running e-Diagtools

The following procedure describes how to run e-Diagtools. The individual steps might differ slightly
for different versions of e-Diagtools.

1. Click Start, Turn Off Computer (or Shut Down), Restart.

2. When the HP logo appears, press F10 to start the diagnostic test.

The first time you run the program, you are prompted to select the language for the program.

3. When the menu appears, press F2 to run e-Diagtools.

4. When the Configuration Description appears, check the list of detected hardware.

5. Run the basic test. Press F2 to start the basic hardware test. The results appear when the test is

complete.

6. If you intend to exit without running the advanced tests, press F4 to view the Support Ticket. Press

F3 to exit e-Diagtools.

7. Optional: run the advanced tests. Press F2 to open the advanced test screen.

8. Use the arrow keys and ENTER to select the test you want to run. Tests are listed only for detected

hardware.

9. Press F2 to run the selected tests and add the results to the Support Ticket.

10. After each run, press F2 to return to the advanced test screen, or press F4 to view the Support

Ticket.

11. Exit.

Press F3 and then any key to exit and reboot.

12. Optional: open the Support Ticket. In Windows, click Start, All Programs (or Programs),

Hewlett-Packard, Notebook, HP e-Diagtools, e-Diagtools for Windows.

13. Click View to display the Support Ticket.

14. To add information about your problem, click Comments, type the information, and then click OK.

To save or print the Support Ticket, click Save As or Print.

To e-mail the Support Ticket to your support agent, click e-Mail. The first time you make an e-mail
connection from this program, click Change Settings in the Connect window and enter the settings
recommended by your support agent.

e-Diagtools for Windows can also update the version of e-Diagtools on your notebook’s hard disk. In
e-Diagtools for Windows, use the e-Diagtools menu.

If you have trouble running e-Diagtools diagnostics from the hard disk, you can also run it from the
Recovery CD or DVD. Boot from the CD or DVD and select the diagnostics option.

3-18 Troubleshooting and Diagnostics HP Omnibook XE4400

Interpreting the Results

The e-Diagtools diagnostic program returns test groups, error codes, and suggestions for repair and/or
follow-up actions. The basic hardware test shows a recommended replacement part.

To help interpret the results of the e-Diagtools tests, refer to the following:

• e-Diagtools Support Ticket on page 3-18.

• Replaceable Module Diagram on page 1-12

• Functional Structure Description on page 1-13

This combined information should enable you to determine which of the notebook’s components
require service.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-19

Power-On Self-Test

Note

If Quiet Boot is enabled in BIOS Setup (the default setting), press Esc during boot to see POST
messages.

When the notebook boots, its system BIOS runs a series of initialization routines and diagnostic tests
called POST (Power-On Self-Test). The BIOS will not boot the notebook’s operating system if the
system memory, CPU, DMA, or interrupt controller fails the POST diagnostic tests. POST indicates
progress by a sequence of codes; if an error occurs, the BIOS displays a message and/or issues a beep
code.

Note that not all POST messages indicate a failure in the notebook—some messages are for
information only. You should not necessarily interpret the failure of one or more POST tests as a
hardware, software, or firmware failure. If POST displays an error message or issues a beep code
indicating an error, confirm the problem using other diagnostic tools.

First, confirm the failure by performing a “clean” boot, as described below. Note that if the notebook
fails to restart with a clean boot, it requires repair.

1. Remove all accessories, including SDRAM modules, port replicator, PC cards, printer, external

monitor, pointing device, and keyboard.

2. Provide “clean” AC power—no auto adapter or unusual AC adapter configuration.

3. Press the reset button to return the notebook to a known state.

4. Press the power button to start the notebook.

If the BIOS detects a terminal error condition, it halts POST after issuing a beep code and/or displaying
a message (see the following table). The beep code indicates the POST routine in which the terminal
error occurred.

Table 3-3. POST Terminal-Error Beep Codes

Beep Codes* POST Description

1 One short beep before boot.

1-2 Search for option ROMs.
1-1-1-3 Verify Real Mode.
1-1-1-4 Disable Non-Maskable Interrupt (NMI).
1-1-2-1 Get CPU type.
1-1-2-3 Initialize system hardware.
1-1-2-4 Disable shadow and execute code from ROM.
1-1-3-1 Initialize chipset with initial POST values.
1-1-3-2 Set IN POST flag.
1-1-3-3 Initialize CPU registers.
1-1-3-4 Enable CPU cache.
1-1-4-1 Initialize caches to initial POST values.
1-1-4-3 Initialize I/O component.
1-1-4-4 Initialize local bus IDE.
1-2-1-1 Initialize Power Management.
1-2-1-2 Load alternate registers with initial POST values.
1-2-1-3 Restore CPU control word during warm boot.
1-2-1-4 Initialize PCI Bus Mastering devices.
1-2-2-1 Initialize keyboard controller.
1-2-2-3 BIOS ROM checksum.
1-2-2-4 Initialize cache before memory Auto size.
1-2-3-1 8254 timer initialization.
1-2-3-3 8237 DMA controller initialization.
1-2-4-1 Reset Programmable Interrupt Controller.
1-3-1-1 Test DRAM refresh.

3-20 Troubleshooting and Diagnostics HP Omnibook XE4400

Beep Codes* POST Description

1-3-1-3 Test 8742 Keyboard Controller (on motherboard).
1-3-2-1 Set ES segment register to 4 GB.
1-3-3-1 Auto size DRAM; or wrong type or no RAM installed.
1-3-3-2 Initialize POST Memory Manager.
1-3-3-3 Clear 512 kB base RAM.
1-3-4-1 RAM failure on address line xxxx.
1-3-4-3 RAM failure on data bits xxxx of low byte of memory bus.
1-3-4-4 Enable cache before system BIOS shadow.
1-4-1-1 RAM failure on data bits xxxx of high byte of memory bus.
1-4-1-3 Test CPU bus-clock frequency.
1-4-1-4 Initialize Phoenix Dispatch Manager.
1-4-2-3 Warm start shut down.
1-4-3-1 Shadow system BIOS ROM.
1-4-3-3 Auto size cache.
1-4-4-1 Advanced configuration of chipset registers.
1-4-4-2 Load alternate registers with CMOS values.
2-1-1-2 Initialize extended memory for RomPilot.
2-1-1-3 Initialize interrupt vectors.
2-1-2-2 POST device initialization.
2-1-2-3 Check ROM copyright notice.
2-1-2-4 Initialize I20 support.
2-1-3-1 Check video configuration against CMOS.
2-1-3-2 Initialize PCI bus and devices.
2-1-3-3 Initialize all video adapters in system.
2-1-3-4 QuietBoot start (optional).
2-1-4-1 Shadow video BIOS ROM.
2-1-4-3 Display BIOS copyright notice.
2-1-4-4 Initialize MultiBoot.
2-2-1-1 Display CPU type and speed.
2-2-1-2 Initialize EISA board.
2-2-1-3 Test keyboard.
2-2-2-1 Set key click if enabled.
2-2-2-2 Enable USB devices.
2-2-3-1 Test for unexpected interrupts.
2-2-3-2 Initialize POST display service.
2-2-3-3 Display prompt "Press F2 to enter SETUP".
2-2-3-4 Disable CPU cache.
2-2-4-1 Test RAM between 512 and 640 kB.
2-3-1-1 Test extended memory.
2-3-1-3 Test extended memory address lines.
2-3-2-1 Jump to UserPatch1.
2-3-2-3 Configure advanced cache registers.
2-3-2-4 Initialize Multi Processor APIC.
2-3-3-1 Enable external and CPU caches.
2-3-3-2 Set up System Management Mode (SMM) area.
2-3-3-3 Display external L2 cache size.
2-3-3-4 Load custom defaults (optional).
2-3-4-1 Display shadow-area message.
2-3-4-3 Display possible high address for UMB recovery.
2-4-1-1 Display error messages.
2-4-1-3 Check for configuration errors.
2-4-2-3 Check for keyboard errors.
2-4-4-1 Set up hardware interrupt vectors.
2-4-4-2 Initialize Intelligent System Monitoring.
2-4-4-3 Initialize coprocessor if present.
3-1-1-1 Disable onboard Super I/O ports and IRQs.
3-1-1-2 Late POST device initialization.
3-1-1-3 Detect and install external RS232 ports.
3-1-1-4 Configure non-MCD IDE controllers.
3-1-2-1 Detect and install external parallel ports.
3-1-2-2 Initialize PC-compatible PnP ISA devices.
3-1-2-3 Re-initialize onboard I/O ports.
3-1-2-4 Configure Motherboard Configurable Devices (optional).
3-1-3-1 Initialize BIOS Data Area.
3-1-3-2 Enable Non-Maskable Interrupts (NMIs).
3-1-3-3 Initialize Extended BIOS Data Area.
3-1-3-4 Test and initialize PS/2 mouse.
3-1-4-1 Initialize floppy controller.
3-1-4-4 Determine number of ATA drives (optional).
3-2-1-1 Initialize hard-disk controllers.
3-2-1-2 Initialize local-bus hard-disk controllers.
3-2-1-3 Jump to UserPatch2.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-21

Beep Codes* POST Description

3-2-1-4 Build MPTABLE for multi-processor boards.
3-2-2-2 Install CD-ROM for boot.
3-2-2-3 Clear huge ES segment register.
3-2-2-4 Fix up Multi Processor table.
3-2-3-2 Check for SMART Drive (optional).
3-2-3-3 Shadow option ROMs.
3-2-4-1 Set up Power Management.
3-2-4-2 Initialize security engine (optional).
3-2-4-3 Enable hardware interrupts.
3-2-4-4 Determine number of ATA and SCSI drives.
3-3-1-1 Set time of day.
3-3-1-3 Check key lock.
3-3-2-1 Initialize typematic rate.
3-3-3-1 Erase F2 prompt.
3-3-3-3 Scan for F2 keystroke.
3-3-4-1 Enter SETUP.
3-3-4-3 Clear Boot flag.
3-4-1-1 Check for errors.
3-4-1-2 Inform RomPilot about the end of POST.
3-4-1-3 POST done - prepare to boot OS.
3-4-2-2 Terminate QuietBoot (optional).
3-4-2-3 Check password (optional).
3-4-2-4 Initialize ACPI BIOS.
3-4-3-2 Prepare Boot.
3-4-3-3 Initialize SMBIOS.
3-4-3-4 Initialize PnP Option ROMs.
3-4-4-1 Clear parity checkers.
3-4-4-2 Display MultiBoot menu.
3-4-4-3 Clear screen (optional).
3-4-4-4 Check virus and backup reminders.
4-1-1-1 Try to boot with INT 19.
4-1-1-2 Initialize POST Error Manager (PEM).
4-1-1-3 Initialize error logging.
4-1-1-4 Initialize error display function.
4-1-2-1 Initialize system error handler.
4-1-2-2 PnPnd dual CMOS (optional).
4-1-2-3 Initialize note dock (optional).
4-1-2-4 Initialize note dock late.
4-1-3-1 Force check (optional).
4-1-3-2 Extended checksum (optional).
4-1-3-3 Redirect Int 15h to enable remote keyboard.
4-1-3-4 Redirect Int 13h to Memory Technologies Devices such as ROM, RAM, PCMCIA, and

4-1-4-1 Redirect Int 10h to enable remote serial video.
4-1-4-2 Re-map I/O and memory for PCMCIA.
4-1-4-3 Initialize digitizer and display message.
4-2-1-3 Unknown interrupt.
4-3-1-1 Initialize the chipset.
4-3-1-2 Initialize the bridge.
4-3-1-3 Initialize the CPU.
4-3-1-4 Initialize system timer.
4-3-2-1 Initialize system I/O.
4-3-2-2 Check force recovery boot.
4-3-2-3 Checksum BIOS ROM.
4-3-2-4 Go to BIOS.
4-3-3-1 Set Huge Segment.
4-3-3-2 Initialize Multi Processor.
4-3-3-3 Initialize OEM special code.
4-3-3-4 Initialize PIC and DMA.
4-3-4-1 Initialize Memory type.
4-3-4-2 Initialize Memory size.
4-3-4-3 Shadow Boot Block.
4-3-4-4 System memory test.
4-4-1-1 Initialize interrupt vectors.
4-4-1-2 Initialize Run Time Clock.
4-4-1-3 Initialize video.
4-4-1-4 Initialize System Management Manager.
4-4-2-1 Output one beep.
4-4-2-2 Clear Huge Segment.
4-4-2-3 Boot to Mini DOS.
4-4-2-4 Boot to Full DOS.

1 long,
2 short

serial disk.

Improper video configuration (replace motherboard) or external ROM checksum failure.

3-22 Troubleshooting and Diagnostics HP Omnibook XE4400

The following table lists POST messages and explanations for reported problems. If the system fails
after you make changes in BIOS Setup, reset the notebook, enter BIOS Setup, and install the defaults
or correct the error.

Table 3-4. POST Messages

Message Description

0200 Failure Fixed Disk

0210 Stuck key

0211 Keyboard error

0212 Keyboard Controller Failed

0213 Keyboard locked – Unlock key switch

0220 Monitor type does not match CMOS – Run SETUP

0230 Shadow RAM Failed at offset: nnnn

0231 System RAM Failed at offset: nnnn

0232 Extended RAM Failed at offset: nnnn

0250 System battery is dead – Replace and run SETUP

0251 System CMOS checksum bad – Default configuration used

0260 System timer error

0270 Real time clock error

0271 Check date and time settings

0280 Previous boot incomplete – Default configuration used

0281 Memory Size found by POST differed from CMOS

02B0 Diskette drive A error

Fixed (hard) disk is not working or not configured properly. Make sure the hard disk is
installed properly. Run BIOS Setup and make sure the hard disk type is correctly identified.

Stuck key on keyboard.

Keyboard is not working.

Keyboard controller failed the test. might require replacing the motherboard (contains the
keyboard controller).

Unlock the system to proceed.

Monitor type is not correctly identified in BIOS Setup.

Shadow RAM failed at offset nnnn of the 64k block at which the error was detected.

System RAM failed at offset nnnn of the 64k block at which the error was detected.

Extended memory is not working or not configured properly at offset nnnn. Update to the
latest BIOS version.

CMOS clock battery indicator shows that the CMOS battery is dead. Connect the AC adapter
for at least 24 hours, then run BIOS Setup to reconfigure the system.

System CMOS has been corrupted or modified incorrectly, perhaps by an application that
changes CMOS data. In response, the BIOS has installed the default Setup values. Use
BIOS Setup to modify these values if needed. If the error persists, check the system battery.
Connect the AC adapter for at least 24 hours; replace the motherboard.

Timer test failed. Replace the motherboard.

Real-time clock failed the BIOS test. Might require replacing the motherboard.

BIOS found the date or time to be out of range, and reset the real-time clock. You might need
to use BIOS Setup to reset the legal date.

Previous POST did not complete successfully. POST loads default values and offers to run
BIOS Setup. If the failure was caused by incorrect values that are not corrected, the next boot
will likely fail. This error is cleared the next time the system is booted.

Memory size found by POST differed from that specified in CMOS.

Drive A: is present but fails the BIOS POST diskette tests. Make sure the drive is defined with
the proper diskette type in BIOS Setup and that the drive is connected correctly.

02B2 Incorrect Drive A type – run SETUP

02D0 System cache error – Cache disabled

02F0: CPU ID:

Type of floppy drive A: not correctly identified in BIOS Setup.

RAM cache failed and BIOS disabled the cache. May require replacing the motherboard.
A disabled cache slows system performance considerably.

CPU socket number for Multi-Processor error.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-23

Message Description

02F4: EISA CMOS not writeable

02F5: DMA Test Failed

02F6: Software NMI Failed

02F7: Fail-Safe Timer NMI Failed

device Address Conflict

Allocation Error for: device

CD ROM Drive

Entering SETUP ...

Failing Bits: nnnn

Fixed Disk n

Invalid System Configuration Data

I/O device IRQ conflict

PS/2 Mouse Boot Summary Screen:

nnnn kB Extended RAM Passed

nnnn Cache SRAM Passed

nnnn kB Shadow RAM Passed

nnnn kB System RAM Passed

Operating system not found

Parity Check 1 nnnn

Parity Check 2 nnnn

Press <F1> to resume, <F2> to Setup, <F3> for previous

Press <F2> to enter Setup

PS/2 Mouse:

ServerBIOS2 test error: Cannot write to EISA CMOS.

ServerBIOS2 test error: Cannot write to extended Direct Memory Access (DMA) registers.

ServerBIOS2 test error: Cannot generate software Non-Maskable Interrupt (NMI).

ServerBIOS2 test error: Fail-safe timer takes too long.

Address conflict for the specified device.

Run ISA or EISA Configuration Utility to resolve a resource conflict for the specified device.

CD-ROM drive identified.

Starting BIOS Setup.

Hex number nnnn is a map of the bits at the RAM address that failed the memory test. Each
1 (one) in the map indicates a failed bit. See errors 230, 231, or 232 above for offset address
of the failure in System, Extended, or Shadow memory.

Fixed disk n (0–3) identified.

Problem with NVRAM (CMOS) data.

I/O device IRQ conflict error.

PS/2 mouse installed.

Where nnnn is the amount of RAM in kB successfully tested.

Where nnnn is the amount of system cache in kB successfully tested.

Where nnnn is the amount of shadow RAM in kB successfully tested.

Where nnnn is the amount of system RAM in kB successfully tested.

Operating system cannot be located on drive A: or drive C:. Enter BIOS Setup and see if the
hard disk and drive A: are properly identified.

Parity error found in the system bus. BIOS attempts to locate the address and display it on
the screen. Parity is a method for checking errors in binary data. A parity error indicates that
data has been corrupted.

Parity error found in the I/O bus. BIOS attempts to locate the address and display it on the
screen.

Displayed after any recoverable error message. Press <F1> to start the boot process or <F2>
to enter BIOS Setup and change the settings. Press <F3> to display the previous screen
(usually an initialization error of an Option ROM, such as an add-on card). Write down and
follow the information shown on the screen.

Optional message displayed during POST.

PS/2 mouse identified.

3-24 Troubleshooting and Diagnostics HP Omnibook XE4400

System BIOS shadowed

UMB upper limit segment address: nnnn

Video BIOS shadowed

System BIOS copied to shadow RAM.

Displays the address nnnn of the upper limit of Upper Memory Blocks (UMB), indicating
released segments of the BIOS that can be reclaimed by a virtual memory manager.

Video BIOS copied to shadow RAM.

Sycard PCCtest 450/460 PC Card (Optional)

The PCCtest 450 and 460 cards (version 1.05) from Sycard Technology are the only recommended
diagnostic tools that test the functionality of the PCMCIA slots using a PCMCIA card. Each is a
Type II PC card that works with test software to exercise PCMCIA functions. (For details, see the
Sycard Technology web site: http://www.sycard.com).

The PCCtest product contains these components:

• PCCtest 450 or 460 (revision 1.05) PC card.

• PCCtest 450/460 software disk. (Software updates are available at the Sycard Technology web

site.)

• Configuration headers (PC card/16-bit and CardBus/32-bit) that attach to the card.

You will also need a CardBus extender card (such as the Sycard PCCextend 70) to avoid wear on the
Sycard PCMCIA connector.

Use the following tests to check the function of the notebook’s PCMCIA slots. See the Sycard
documentation for details about running the tests.

Table 3-5. Sycard PCCtest Commands

Omnibook XE4400

(PCI 1520)

Slot PCMCIA PC card (16-bit) test

(PC card configuration header)

Upper
Lower

pct450-v-1-b80
pct450-v-0-b80

CardBus (32-bit) test

(CardBus configuration header)

testcb-v-1-b80
testcb-v-0-b80

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-25

Windows Management Instrumentation (WMI)

The Windows Management Instrumentation is basically sets of rules for accessing information about a
notebook. WMI allows an application to determine, for example, the operating system being used,
which hardware and software components are in the notebook, and possibly whether any of the
components need replacing. A local or remote application can use the WMI interface to check which
hardware and software components are installed on your notebook, and might be able to tell how well
they are working or if they need replacement.

Installing the WMI Package

The WMI package is either preinstalled on the notebook’s hard disk or can be downloaded from
http://www.hp.com/toptools (the contents are the same in both cases). The package must be properly
installed before it can be used.

To install the WMI preloaded on the hard disk:

1. Start Windows, if it is not already running.

2. Click Start, Programs (or All Programs), Hewlett-Packard, HP Toptools Agent, Setup.

Using WMI

For a complete description of how to use WMI, see the following documentation provided with the
notebook:

• A README.TXT file: click Start, Programs, Hewlett-Packard, HP Toptools Agent, Read me.

• A Windows online help file describing Hewlett-Packard’s implementation of WMI (group and

attribute definitions): click Start, Programs Hewlett-Packard, HP Toptools Agent, HP Toptools
Help.

Uninstalling the WMI Package

1. Click Start, Programs (or All Programs), Hewlett-Packard, HP Toptools Agent, Uninstall WMI.

2. Restart the notebook.

3-26 Troubleshooting and Diagnostics HP Omnibook XE4400

BIOS Setup Utility

The BIOS Setup utility provides access to the notebook’s basic configuration settings. It is independent
of the operating system.

Running the BIOS Setup Utility

1. Close all applications, then restart the notebook: click Start, Turn Off Computer, Restart. (If

necessary, you can press Ctrl+Alt+Del to restart.)

2. When the HP logo appears, press F2 to enter the BIOS Setup utility.

3. The pointing devices are not active in BIOS Setup, so you will need to use the keyboard to

navigate:

• Press the LEFT and RIGHT arrow keys to move among menus.

• Press the UP and DOWN arrow keys to move among parameters in a menu.

• Press F5 or F6 to move through values for the current parameter, or press Enter to change a

setting.

4. After you select the options you want, press F10 or use the Exit menu to exit BIOS Setup.

If the settings cause a conflict between devices during reboot, the system prompts you to run BIOS

Setup, and marks the conflicting settings.

Note

The listings in the following table are for the initial XE4400 BIOS release, and might differ
somewhat for other models.

Table 3-6. BIOS Setup Menus and Parameters

Omnibook XE4400:

Main Menu Description Default

BIOS Revision Shows the current BIOS version. Detected

System Time Sets the time using 24-hour format. Values set take effect

System Date Sets the date using dd/mm/yy format (except English, which

Language Sets the language for BIOS Setup. Detected

Internal Hard Disk Sets the hard disk drive type and various parameters. Detected

Extended Memory Shows the extended memory size. Detected

CPU Serial Number For a Pentium processor with a serial number, makes the

Serial Number Displays the serial number as shown on the back of the

PC ID Displays the PC ID String stored in the reserved part of

Introduced with BIOS version KD.M1.00 (Spring 2002).

immediately.

uses mm/dd/yy format).

serial number available to software.

notebook.

RAM.

automatically.

automatically.

automatically.

automatically.

Disabled.

Detected
automatically.

HP Omnibook XE4400 Troubleshooting and Diagnostics 3-27

Main Menu Description Default

Service ID Displays an identifier used for repair service. Detected

automatically.

UUID Displays the value of the 16-byte UUID (Universally Unique

ID) as 32 hex characters.

MAC Address Displays the MAC network address of the internal (wired)

LAN, if present.

System Devices Menu Description Default

Video Display Device Sets whether the built-in display automatically switches to

an external display, if one is detected.

External Pointing
Devices

Legacy USB Support Enables BIOS support for USB mouse, keyboard, and floppy

Wake On LAN from
Power Off

Security Menu Description Default

User Password is Shows if a user password is set. Clear

Administrator Password
is

Set User Password Press ENTER to set, change, or clear the user password.

Set Administrator
Password

Password Required to
Boot

Boot Menu Description Default

Hard Disk
Removable Device
CD/DVD
Built-in LAN

Exit Menu Description

Save Changes and Exit Saves Setup changes, and then exits and reboots.

Discard Changes and
Exit

Get Default Values Restores default settings, and remains in Setup. Does not

Disables the internal pointing devices when an external
pointing device is connected.

drive during startup.

Lets the notebook be turned on via the LAN port. If this
option is enabled, the notebook uses increased power while
it is shut down.

Shows if an administrator password is set. Clear

The password can have no more than 8 characters (0-9,
A-Z), and cannot include special or accented characters.

Press ENTER to set, change, or clear the administrator
password, which protects BIOS Setup settings. The
password can have no more than 8 characters (0-9, A-Z),
and cannot include special or accented characters.

Sets whether a user password is required when the
computer boots. Requires the administrator password for
changes.

Shows the order of boot devices. Move the entries to
change the order. Built-in LAN provides diskless boot from a
network server.

Discards any Setup changes made since last save, and then
exits and reboots. Does not affect password, date, or time
changes.

affect password, date, or time changes.

Detected
automatically.

Detected
automatically.

Auto

Auto

Enabled

Disabled

Enter

Enter

Disabled

1. Hard Disk

2. Removable
Device

3. CD/DVD

4. Built-in LAN

Updating the Notebook’s BIOS

Hewlett-Packard might from time to time provide updates to the notebook’s BIOS. Use e-DiagTools
for Windows to download and install these BIOS updates as needed (page 2-39).

3-28 Troubleshooting and Diagnostics HP Omnibook XE4400

Replaceable Parts

This chapter contains an exploded view of the Omnibook XE4400 and the following lists of parts:

• Notebook replaceable parts (page 4-3).

• Accessory replacement parts (page 4-5).

• Part number reference (page 4-5).

4

HP Omnibook XE4400 Replaceable Parts 4-1

Figure 4-1. Exploded View

4-2 Replaceable Parts HP Omnibook XE4400

Table 4-1. Omnibook Replaceable Parts

Exchange User-

Description Part Number Part Number Repl.

26 Battery, Li-Ion F4809-60901 Yes
1511Case, Bottom (includes right PCA and left wireless

antennas)
Antenna, Wireless, Left and Right (PCAs)

1511Case, Bottom (includes right PCA and left wireless

antennas)
Antenna, Wireless, Left and Right (PCAs)

1511Case, Bottom (includes right PCA and left wireless

antennas)
Antenna, Wireless, Left and Right (PCAs)

4 Case, Top Gray/Silver (includes touchpad, touchpad

PCA, touchpad flex cable, lid switch, and lidswitch
cable)

4 Case, Top Black/Silver (includes touchpad, touchpad

PCA, touchpad flex cable, lid switch, and lidswitch
cable)

6 Cover, Button Assembly F4665-60904

Cover, Docking Port F4640-60966 Yes

Cover, Modem Port F4640-60960
2 Display Assembly, 14.1” XGA (Gray/Silver) F4640-60938
2 Display Assembly, 15” SGVA+ (Gray/Silver) F4640-60940
2 Display Assembly, 15” XGA (Gray/Silver) F4640-60939
2 Display Assembly, 14.1” XGA (Black/Silver) F4640-60961
2 Display Assembly, 15” SGVA+ (Black/Silver) F4640-60963
2 Display Assembly, 15” XGA (Black/Silver) F4640-60962

18 Door, Memory F4665-60901 Yes
24 Door, Mini-PCI F4665-60902 Yes
27 Drive, CD-ROM F4640-60934 Yes
27 Drive, Combo, CD-RW/DVD F4640-60937 Yes
27 Drive, DVD F4640-60936 Yes
3 Drive, FDD (includes FDD, FDD bezel, and flex cable) F46665-60905
20 Drive, Hard Disk Yes
10 Fan, Small F4665-60911
17 Guide, OOD F4665-60918
7 Heatsink Assembly (includes heatsink, fans, and fan

cables)

1 Keyboard, Arab/English F4640-60909 Yes
1 Keyboard, Belgium F4640-60910 Yes
1 Keyboard, Czech/English F4640-60911 Yes
1 Keyboard, Danish F4640-60912 Yes
1 Keyboard, French/Canada F4640-60914 Yes
1 Keyboard, French F4640-60913 Yes
1 Keyboard, German F4640-60915 Yes
1 Keyboard, Greek F4640-60916 Yes
1 Keyboard, Hebrew F4640-60917 Yes
1 Keyboard, Hungary F4640-60918 Yes
1 Keyboard, Iceland F4640-60919 Yes
1 Keyboard, International English F4640-60920 Yes

F4665-60919

F4665-60937
F4665-60920

F4665-60937
F4665-60921

F4665-60937
F4665-60906

F4665-60908

F4665-60910

HP Omnibook XE4400 Replaceable Parts 4-3

Exchange User-

Description Part Number Part Number Repl.

1 Keyboard, Italy F4640-60921 Yes
1 Keyboard, Japan F4640-60922 Yes
1 Keyboard, Norway F4640-60923 Yes
1 Keyboard, Portugese F4640-60924 Yes
1 Keyboard, Russian F4640-60925 Yes
1 Keyboard, Spanish F4640-60926 Yes
1 Keyboard, Sweden/Finnish F4640-60927 Yes
1 Keyboard, Swiss F4640-60928 Yes
1 Keyboard, Traditional Chinese F4640-60929 Yes
1 Keyboard, Turkish F4640-60930 Yes
1 Keyboard, United Kingdom F4640-60931 Yes
1 Keyboard, US, English F4640-60932 Yes
5 Keyboard Cover/Speaker Assembly F4665-60903 Yes
5 Keyboard Cover/Speaker Assembly (Black) F4665-60928 Yes

Kit, Cable (includes, audio control, IR, switchboard,
FDD, button panel, and speaker)

Kit, Display Screw Plug, Gray Rubber Display Screw
Plugs (6), Mylar Display Screw Plugs (4)

14 Kit, Door, PCMCIA

Upper Door w/ Spring
Lower Door w/ Spring

Kit, Rubber Foot and Screw Plug
Rubber Feet (6)

Rubber Front Screw Plugs (8)
19 Kit, Screw F4640-60975
8 Module, CPU (DT)
22 Panel, Wireless w/ IR, w/ button F4640-60950
25 PCA, Audio Control F4665-60923
23 PCA, I/R F4665-60924
9 PCA, Motherboard, Pentium DT (includes HDD guide,

lower OOD guide, and modem/audio PCA, does not

include CPU)

PCA, Modem/Audio
9 PCA, Motherboard, Pentium DT (includes HDD guide,

lower OOD guide, and modem/audio PCA, does not

include CPU)

PCA, Modem/Audio
16 Shield, ESD F4665-60913
13 Socket, PCMCIA F4665-60912
19 Tray, HDD (includes HDD frame, interface connector,

four mounting screws, plastic door)

F4665-60936

F4640-60970 Yes

F4640-60965

F4640-60969 Yes

F4665-60916

F4665-60927
F4665-60917

F4665-60927

F4640-60904 Yes

4-4 Replaceable Parts HP Omnibook XE4400

Table 4-2. Accessory Replaceable Parts

Exchange User

Description Part Number Part Number Repl.

128-MB SDRAM module (DDR266) Yes
256-MB SDRAM module (DDR266) Yes
512-MB SDRAM module (DDR266) Yes
90-watt AC adapter Yes
8-cell Lithium-ion battery Yes
Adapter, PS/2 Y F1469-80001 Yes
Cord, power (Australia) 8120-6312 Yes
Cord, power (U.S., Canada, Taiwan) 8120-6313 Yes
Cord, power (Europe) 8120-6314 Yes
Cord, power (Japan) 8120-6316 Yes
Cord, power (India) 8120-0702 Yes
Cord, power (South Africa) 8120-6317 Yes
Cord, power (Argentina) 8120-8367 Yes
Cord, power (People’s Rep. Of China) 8120-8373 Yes
Cord, power (S. Korea) 8120-8441 Yes
Cord, power (Chile) 8120-8452 Yes
Cord, power (Hong Kong, Singapore) 8120-8699 Yes
Drive, 40-GB hard disk Yes
Port replicator Yes

Table 4-3. Part Number Reference

Exchange User-

Part Number Part Number Description Repl.

128-MB SDRAM module (DDR266) Yes
256-MB SDRAM module (DDR266) Yes
512-MB SDRAM module (DDR266) Yes
20-GB hard disk drive module Yes
30-GB hard disk drive module Yes
40-GB hard disk drive module Yes

90-watt AC adapter Yes
F1469-80001 Adapter, PS/2 Y Yes
F4665-60937 Antenna, Wireless, Left and Right (PCAs)
F4809-60901 Battery, Li-Ion Yes
F4665-60919 Bottom Case
F4665-60920 Bottom Case
F4665-60921 Bottom Case
F4665-60906 Case, Top
F4665-60908 Case, Top
8120-6312 Cord, power (Australia) Yes
8120-6313 Cord, power (U.S., Canada, Taiwan) Yes
8120-6314 Cord, power (Europe) Yes
8120-6316 Cord, power (Japan) Yes
8120-0702 Cord, power (India) Yes
8120-6317 Cord, power (South Africa) Yes
8120-8367 Cord, power (Argentina) Yes

HP Omnibook XE4400 Replaceable Parts 4-5

Exchange User-

Part Number Part Number Description Repl.

8120-8373 Cord, power (People’s Rep. Of China) Yes
8120-8441 Cord, power (S. Korea) Yes
8120-8452 Cord, power (Chile) Yes
8120-8699 Cord, power (Hong Kong, Singapore) Yes
F4665-60904 Cover, Button Assembly Yes
F4640-60966 Cover, Docking Port Yes
F4640-60960 Cover, Modem Port
F4640-60938 Display Assembly, 14.1” XGA (Gray/Silver)
F4640-60940 Display Assembly, 15” SGVA+ (Gray/Silver)
F4640-60939 Display Assembly, 15” XGA (Gray/Silver)
F4665-60961 Display Assembly, 14.1” XGA (Gray/Silver)
F4665-60963 Display Assembly, 15” SGVA+ (Gray/Silver)
F4665-60962 Display Assembly, 15” XGA (Black/Silver)
F4665-60901 Door, Memory Yes
F4665-60902 Door, Mini-PCI Yes
F4640-60934 Drive, CD-ROM Yes
F4640-60937 Drive, Combo, CD-RW/DVD Yes
F4640-60936 Drive, DVD Yes
F4665-60905 Drive, FDD (includes FDD, FDD bezel, and flex cable)

Drive, Hard Disk Yes
F4665-60911 Fan, Small
F4665-60918 Guide, OOD
F4665-60910 Heatsink Assembly
F4640-60909 Keyboard, Arab/English Yes
F4640-60910 Keyboard, Belgium Yes
F4640-60911 Keyboard, Czech/US Yes
F4640-60912 Keyboard, Danish Yes
F4640-60914 Keyboard, French/Canada Yes
F4640-60913 Keyboard, French Yes
F4640-60915 Keyboard, German Yes
F4640-60916 Keyboard, Greek Yes
F4640-60917 Keyboard, Hebrew Yes
F4640-60918 Keyboard, Hungary Yes
F4640-60919 Keyboard, Iceland Yes
F4640-60920 Keyboard, International English Yes
F4640-60921 Keyboard, Italy Yes
F4640-60922 Keyboard, Japan Yes
F4640-60923 Keyboard, Norway Yes
F4640-60924 Keyboard, Portugese Yes
F4640-60925 Keyboard, Russian Yes
F4640-60926 Keyboard, Spanish Yes
F4640-60927 Keyboard, Sweden/Finnish Yes
F4640-60928 Keyboard, Swiss Yes
F4640-60929 Keyboard, Traditional Chinese Yes
F4640-60930 Keyboard, Turkish Yes
F4640-60931 Keyboard, United Kingdom Yes
F4640-60932 Keyboard, US, English Yes
F4665-60903 Keyboard Cover/Speaker Assembly Yes

4-6 Replaceable Parts HP Omnibook XE4400

Exchange User-

Part Number Part Number Description Repl.

F4665-60928 Keyboard Cover/Speaker Assembly (Black) Yes
F4640-60970 Kit, Display Screw Cover Yes
F4640-60965 Kit, Door, PCMCIA
F4640-60969 Kit, Rubber Foot and Screw Plug Yes

Kit, Screw

Module, CPU (Pentium 4-M)
F4640-60950 Panel, Wireless w/ IR, w/ button
F4665-60923 PCA, Audio Control
F4640-60946 PCA, I/R
F4665-60916 PCA, Motherboard, Pentium DT
F4640-60917 PCA, Motherboard, Pentium DT
F4665-60927 PCA, Modem/Audio
F4640-60905 Port Replicator
F4665-60913 Shield, ESD
F4665-60904 Socket, PCMCIA
F4640-60904 Tray, HDD

HP Omnibook XE4400 Replaceable Parts 4-7