COMPAQ nc4400, nc4400 Maintenance and Service Guide
Maintenance and Service
Guide
HP Compaq nc4400 Notebook PC
Document Part Number: 383207-002
May 2006
This guide is a troubleshooting reference used for maintaining
and servicing the computer. It provides comprehensive
information on identifying computer features, components, and
spare parts; troubleshooting computer problems; and performing
computer disassembly procedures.
© Copyright 2006 Hewlett-Packard Development Company, L.P.
Microsoft and Windows are U.S. registered trademarks of Microsoft
Corporation. Intel, Celeron, and Core are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United States and
other countries. Bluetooth is a trademark owned by its proprietor and used
by Hewlett-Packard Company under license. SD Logo is a trademark of its
proprietor.
The information contained herein is subject to change without notice. The
only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing
herein should be construed as constituting an additional warranty. HP shall
not be liable for technical or editorial errors or omissions contained herein.
Maintenance and Service Guide
HP Compaq nc4400 Notebook PC
Second Edition: May 2006
First Edition: March 2005
Document Part Number: 383207-002
Contents
1 Product Description
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2 Resetting the Computer. . . . . . . . . . . . . . . . . . . . . . . 1–4
1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–6
1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–20
2 Troubleshooting
2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Using Computer Setup . . . . . . . . . . . . . . . . . . . . . . . 2–1
Selecting from the File Menu . . . . . . . . . . . . . . . . . . 2–2
Selecting from the Security Menu . . . . . . . . . . . . . . 2–3
Selecting from the Diagnostics Menu. . . . . . . . . . . . 2–4
Selecting from the System Configuration Menu. . . . 2–5
2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–6
Maintenance and Service Guide iii
Contents
3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Computer Major Components. . . . . . . . . . . . . . . . . . 3–2
3.3 Display Assembly Components . . . . . . . . . . . . . . . 3–11
3.4 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.5 Cable Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
3.6 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–15
3.7 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–17
4 Removal and Replacement Preliminaries
4.1 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
4.2 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . 4–2
Plastic Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . 4–2
4.3 Preventing Damage to Removable Drives . . . . . . . . 4–3
4.4 Preventing Electrostatic Damage . . . . . . . . . . . . . . . 4–4
4.5 Packaging and Transporting Precautions . . . . . . . . . 4–5
4.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 4–6
4.7 Grounding Equipment and Methods . . . . . . . . . . . . . 4–7
iv Maintenance and Service Guide
5 Removal and Replacement Procedures
5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–3
5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–5
5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7
5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
5.6 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12
5.7 External Memory Module . . . . . . . . . . . . . . . . . . . . 5–14
5.8 Keyboard Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17
5.9 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–20
5.10 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24
5.11 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–25
5.12 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–28
5.13 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–30
5.14 Mini Card WLAN Module . . . . . . . . . . . . . . . . . . 5–32
5.15 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–34
5.16 Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–48
5.17 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–51
5.18 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55
5.19 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–59
5.20 Infrared Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–61
5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–63
5.22 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–68
5.23 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–70
Contents
Maintenance and Service Guide v
Contents
6 Specifications
A Screw Listing
B Software Backup and Recovery
C Display Component Recycling
D Connector Pin Assignments
E Power Cord Set Requirements
Index
vi Maintenance and Service Guide
1
Product Description
The HP Compaq nc4400 Notebook PC offers advanced
modularity, Intel® Core™ Duo and Celeron® M processors, and
extensive multimedia support.
HP Compaq nc4400 Notebook PC
Maintenance and Service Guide 1–1
Product Description
1.1 Features
■ Intel Core Duo T2600 (2.17-GHz), T2500 (2.00-GHz),
T2400 (1.83-GHz), and T2300 (1.67-GHz) or Intel
Celeron M 1.60-GHz processors, varying by computer model
■ 12.1-inch, XGA, TFT (1024 × 768) display with over
16.8 million colors
■ 100-, 80-, or 60-GB high-capacity hard drive, varying by
computer model
■ 256-MB DDR2 synchronous DRAM (SDRAM) at 633 MHz
and 533 MHz, expandable to 4.0 GB
■ Microsoft® Windows® XP Home Edition or Windows XP
Professional, varying by computer model
■ Full-size Windows keyboard with embedded numeric keypad
■ TouchPad and pointing stick pointing devices, including a
dedicated vertical scroll region
■ Integrated 10Base-T/100Base-T/1000Base-T Ethernet local
area network (LAN) network interface card (NIC) with RJ-45
jack
■ Integrated high-speed 56K modem with RJ-11 jack
■ Integrated wireless support for Mini Card 802.11b/g and
802.11a/b/g WLAN device
■ Support for one Type I or Type II PC Card slot, with support
for both 32-bit (CardBus) and 16-bit PC Cards
1–2 Maintenance and Service Guide
Product Description
■ External 65-watt AC adapter with 3-wire power cord
■ 6-cell Li-Ion battery pack
■ Audio speaker
■ Volume up, volume mute, and volume down buttons
■ Connectors:
❏ Infrared
❏ Audio-out (headphone)
❏ Audio-in (microphone)
❏ Universal Serial Bus (USB) v. 2.0 (3 ports, 1 powered)
❏ Smart adapter power
❏ External monitor
❏ RJ-45 (network)
❏ RJ-11 (modem)
❏ S-Video-out
❏ PC Card
❏ Digital Media Slot
❏ Primary battery pack
❏ Accessory battery pack
❏ Docking connector
Maintenance and Service Guide 1–3
Product Description
1.2 Resetting the Computer
If the computer you are servicing has an unknown password,
follow the steps below to reset the password. These steps also
clear CMOS.
The following steps will not clear an unknown password if the
✎
stringent security option has been enabled in the BIOS. If
stringent security is enabled, the system board must be replaced
to reset an unknown password. Refer to Section 5.21, “System
Board,” for more information on replacing the system board.
Before replacing the system board, perform the steps below to
be sure that stringent security has been properly enabled.
Enabling stringent security provides enhanced prtotection for the
power-on password and administrator password and other forms
of power-on authorization. Stringent security is enabled/disabled
by accessing the Password Options menu in the Computer Setup
utility. Refer to Section 2.1, “Computer Setup,” for more
information.
1. Prepare the computer for disassembly (refer to Section 5.3,
“Preparing the Computer for Disassembly,” for more
information).
2. Remove the real-time clock (RTC) battery (refer to
Section 5.23, “RTC Battery,” for more information on
removing and replacing the RTC battery).
3. Wait approximately 5 minutes.
4. Replace the RTC battery and reassemble the computer.
5. Connect AC power to the computer. Do not reinsert any
battery packs at this time.
6. Turn on the computer.
All passwords and all CMOS settings have been cleared.
1–4 Maintenance and Service Guide
1.3 Power Management
The computer comes with power management features that
extend battery pack operating time and conserve power. The
computer supports the following power management features:
■ Standby
■ Hibernation
■ Setting customization by the user
■ Hotkeys for setting the level of performance
■ Battery calibration
■ Lid switch resume
■ Power button
■ Advanced Configuration and Power Management (ACPM)
compliance
Product Description
Maintenance and Service Guide 1–5
Product Description
1.4 External Components
The external components on the front of the computer are shown
below and described in Table 1-1.
Front Components
Tabl e 1-1
Front Components
Item Component Function
1 Wireless light On: An integrated wireless device, such as
a wireless local area network (WLAN)
device and/or Bluetooth® device, is turned
on.
2Power light ■ On: The computer is on.
■ Blinking green: The computer is in
standby.
■ Blinking rapidly: Wrong AC adapter is
connected. Connect an HP Smart AC
Adapter.
■ Off: The computer is off or in hibernation.
1–6 Maintenance and Service Guide
Tabl e 1-1
Product Description
Front Components
(Continued)
Item Component Function
3Battery light ■ Amber: A battery pack is charging.
■ Green: A battery pack is close to full
charge capacity.
■ Blinking amber: A battery pack that is the
only available power source has reached
a low-battery condition. When the battery
pack reaches a critical low-battery
condition, the battery light begins
blinking more quickly.
■ Off: If the computer is connected to
an external power source, the light
is turned off when all battery packs in the
computer are fully charged. If the
computer is not connected to an external
power source, the light is turned off until
the battery pack reaches a low-battery
condition, when the light begins blinking
amber.
4Drive light ■ Blinking green: The hard drive or optical
drive is being accessed.
■ Amber: HP Mobile Data Protection has
temporarily parked the hard drive.
5 Infrared port Provides wireless communication between
the computer and an optional
IrDA-compliant device.
6 Display release button Opens the computer.
7 Internal microphone Records sound.
8 Fingerprint reader Allows a fingerprint logon to Windows
instead of using a password.
Maintenance and Service Guide 1–7
Product Description
The external components on the right side of the computer are
shown below and described in Table 1-2.
Right-Side Components
1–8 Maintenance and Service Guide
Tabl e 1-2
Right-Side Components
Item Component Function
Product Description
1Audio-out
(headphone) jack
2 Audio-in (microphone)
jack
3 Powered USB port Connects USB 1.1- or 2.0-compliant
4 PC Card slot or
optional smart card
reader
5 Digital Media Slot Supports Secure Digital (SD) Memory
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
Connects an optional monaural (single
sound channel) or stereo (dual sound
channel) microphone.
devices to the computer using a standard
USB cable, or connects an optional external
MultiBay or external MultiBay II to
the computer. This USB port is a powered
port that can be used without external
power.
On select computer models, the PC
✎
Card slot may be replaced with an
optional smart card reader.
If your computer has
■ a PC Card slot, it supports optional
Type I, Type II, 32-bit (CardBus), or
16-bit PC Cards.
■ a smart card reader, it accepts smart
cards or Java™ Cards.
Cards and MultiMediaCards (MMC).
Maintenance and Service Guide 1–9
Product Description
The external components on the left side of the computer are
shown below and described in Table 1-3.
Left-Side Components
Tabl e 1-3
Left-Side Components
Item Component Function
1 Security cable slot Attaches an optional security cable to the
computer.
The purpose of security solutions is
✎
to act as deterrents. These
deterrents may not prevent a product
from being mishandled or stolen.
2 Vent Provides airflow to cool internal
1–10 Maintenance and Service Guide
components.
To prevent overheating, do not
✎
obstruct vents. Use the computer
only a hard, flat surface. Do not allow
a hard surface, such as an adjoining
printer, or a soft surface, such as
pillows or thick rugs or clothing, to
block airflow.
Depending on the computer model,
✎
vents vary in number and location.
Tabl e 1-3
Product Description
Left-Side Components
(Continued)
Item Component Function
3 Wireless button Turns the wireless functionality of the
WLAN or Bluetooth device on or off, but
does not establish a connection.
To establish a wireless connection,
✎
a wireless network must already be
set up.
4 USB port Connects a USB 1.1- and 2.0-compliant
device to the computer using a standard
USB cable.
5 Info Center button Launches Info Center, which enables you
to open various software solutions.
6 Power switch When the computer is
■ Off, slide toward the front of the
computer and release to turn on the
computer.
■ In standby, slide toward the front of the
computer and release to exit standby.
■ In hibernation, slide toward the front of
the computer and release to exit
hibernation.
If the computer has stopped responding
and Microsoft Windows shutdown
procedures cannot be used, slide toward
the front of the computer and hold for
4 seconds to turn off the computer.
7 Speaker Enables you to listen to music and hear
audio alerts and signals from programs.
Maintenance and Service Guide 1–11
Product Description
The external components on the rear panel of the computer are
shown below and described in Table 1-4.
Rear Panel Components
1–12 Maintenance and Service Guide
Product Description
Tabl e 1-4
Rear Panel Components
Item Component Function
1 USB port Connects USB 1.1- and 2.0-compliant
devices to the computer using a standard
USB cable.
2 RJ-11 (modem) jack Connects a modem cable. Enabled with
56-K connectivity.
3 RJ-45 (network) jack Connects a network cable. Enabled with
10BASE-T/100BASE-TX/1000BASE-T
connectivity.
4 Smart adapter power
connector
5 External monitor port Connects an optional VGA external monitor
6 S-Video-out jack Is a 7-pin, dual-purpose jack.
Connects an AC adapter, an optional
AC adapter, or an optional power cable.
or projector.
It connects an optional S-Video device,
such as a television, VCR, camcorder,
overhead projector, or video capture card,
with an optional, standard (4-pin) S-Video
cable.
The extra 3 pins also enable an optional
S-Video-to-composite adapter to be used
with the computer.
Maintenance and Service Guide 1–13
Product Description
The standard keyboard components of the computer are shown
below and described in Table 1-5.
Standard Keyboard Components
1–14 Maintenance and Service Guide
Product Description
Table 1-5
Standard Keyboard Components
Item Component Function
1 Function keys (6) Perform system and application tasks.
When combined with the fn key, the
function keys f3, f4, and f8 through f11
perform additional tasks as hotkeys.
2 caps lock key Enables caps lock and turns on the caps
3 fn key Executes frequently used system
4 Windows logo key Displays the Microsoft Windows
5Windows
applications key
6 Arrow keys Moves the cursor around the screen.
7 Embedded numeric
keypad
8 num lock key Enables numeric lock, turns on the
lock light.
functions when pressed in combination
with a function key or the esc key.
Start menu.
Displays a shortcut menu for items
beneath the pointer.
Can be used like an external numeric
keypad.
embedded numeric keypad, and turns
on the num lock light.
Maintenance and Service Guide 1–15
Product Description
The computer top components are shown below and described in
Table 1-6.
Top Components
1–16 Maintenance and Service Guide
Table 1-6
Top Components
Item Component Function
Product Description
1 Left and right TouchPad
buttons (2)
2 TouchPad Moves the pointer. Can be set to perform
3 Left and right pointing
stick buttons (2)
4 Pointing stick Moves the pointer.
5 Vent Provides airflow to cool internal
6 Presentation button Starts the presentation feature.
7 Volume mute button Mutes or restores volume.
8 Volume down button Decreases computer sound.
9 Volume up button Increases computer sound.
10 TouchPad scroll zone Scrolls upward or downward.
Function like the left and right buttons on
an external mouse.
other mouse functions, such as scrolling,
selecting, and double-clicking.
Function like the left and right buttons on
an external mouse.
components.
To prevent overheating, do not
✎
obstruct vents. Use the computer
only a hard, flat surface. Do not
allow a hard surface, such as an
adjoining printer, or a soft surface,
such as pillows or thick rugs or
clothing, to block airflow.
Maintenance and Service Guide 1–17
Product Description
The external components on the bottom of the computer are
shown below and described in Table 1-7.
Bottom Components
1–18 Maintenance and Service Guide
Product Description
Table 1 -7
Bottom Components
Item Component Function
1 Base enclosure cover Covers the display cable and connector.
2 Docking connector Connects the computer to an optional
docking device.
3 Accessory battery
connector
4 Vents (3) Provides airflow to cool internal
5 Battery bay Holds the battery pack.
6 Battery release latch Releases the battery pack from the
7 Hard drive cover Holds the primary hard drive.
8 Expansion memory
module compartment
Connects an optional HP Ultra-Capacity
Battery or HP Extended Life Battery.
components.
To prevent overheating, do not
✎
obstruct vents. Use the computer
only a hard, flat surface. Do not
allow a hard surface, such as an
adjoining printer, or a soft
surface, such as pillows or thick
rugs or clothing, to block airflow.
battery bay.
Contains one expansion memory
module slot.
Maintenance and Service Guide 1–19
Product Description
1.5 Design Overview
This section presents a design overview of key parts and features
of the computer. Refer to Chapter 3, “Illustrated Parts Catalog,”
to identify replacement parts, and Chapter 5, “Removal and
Replacement Procedures,” for disassembly steps.
The system board provides the following device connections:
■ Audio
■ Bluetooth
■ Display
■ Hard drive
■ Intel Core Duo and Celeron M processors
■ Keyboard
■ Memory module
■ Mini Card devices
■ PC Card
■ Pointing stick
■ To uc hP ad
CAUTION: To properly ventilate the computer, allow at least a 7.6-cm
Ä
(3-inch) clearance on the left and right sides of the computer.
The computer uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to turn on
automatically when high temperature conditions exist. These
conditions are affected by high external temperatures, system
power consumption, power management/battery conservation
configurations, battery fast charging, and software. Exhaust air is
displaced through the ventilation grill located on the left side of
the computer.
1–20 Maintenance and Service Guide
Troubleshooting
WARNING: Only authorized technicians trained by HP should repair
Å
this equipment. All troubleshooting and repair procedures are detailed
to allow only subassembly-/module-level repair. Because of the
complexity of the individual boards and subassemblies, do not attempt
to make repairs at the component level or modifications to any printed
wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board
modification may void any warranty or exchange allowances.
2.1 Computer Setup
Computer Setup is a system information and customization utility
that can be used even when the operating system is not working
or will not load. This utility includes settings that are not
available in Windows.
2
Using Computer Setup
Information and settings in Computer Setup are accessed from
the File, Security, Diagnostics, or System Configuration menus:
1. Turn on or restart the computer. Press
F10 = ROM-Based Setup message is displayed in
the lower-left corner of the screen.
❏ To change the language, use the cursor control keys
to navigate to the System Configuration menu.
❏ To view navigation information, press f1.
❏ To return to the Computer Setup menu, press esc.
Maintenance and Service Guide 2–1
f10 while the
Troubleshooting
2. Select the File, Security, Diagnostics, or
System Configuration menu.
3. To close Computer Setup and restart the computer:
❏ Select File > Save changes and exit, and then press enter.
– or –
❏ Select File > Ignore changes and exit, and then
– or –
❏ Select File > Restore defaults, and then press enter.
press
enter.
4. When you are prompted to confirm your action, press
Selecting from the File Menu
Table 2 -1
File Menu
Select To Do This
System Information ■ View identification information about the
computer, processor, memory and cache size,
and system ROM.
■ View BIOS revision, keyboard controller
version, and battery pack serial number
information.
f10.
2–2 Maintenance and Service Guide
Troubleshooting
Selecting from the Security Menu
Table 2 -2
Security Menu
Select To Do This
Setup Password Enter, change, or delete an Setup password.
Power-On Password Enter, change, or delete a power-on password.
Password Options
(Password options can
be selected only when
a power-on password
has been set.)
DriveLock Passwords Enable/disable DriveLock; change a DriveLock
Smart Card Security Enable/disable smart card power-on support.
TPM Embedded Security Enable/disable:
System IDs Establish:
Disk Sanitizer Establish fast, optimum, or custom settings for
Enable/disable:
■ Stringent security.
■ Requirement of password on restart.
user or master password.
DriveLock Settings are accessible only
✎
when you enter Computer Setup by turning
on (not restarting) the computer.
A setup password must be established to
✎
use this feature.
■ Embedded security device state.
■ Power-on authentication support.
■ Automatic DriveLock support.
■ Notebook asset tracking number.
■ Notebook ownership tags.
disk sanitizing.
*Not applicable to SuperDisk LS-120 drives.
Maintenance and Service Guide 2–3
Troubleshooting
Selecting from the Diagnostics Menu
Table 2 -3
Diagnostics Menu
Select To Do This
HDD Self-Test Options Run a quick comprehensive self test on hard
drives in the system that support the test features.
Memory Check Run a quick comprehensive test on system
memory on the following categories:
■ Walking 0s
■ Walking 1s
■ High Address line testing
■ Alternate Pattern testing
2–4 Maintenance and Service Guide
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