HP Compaq nx8220 and nc8230 Notebook PCs
HP Compaq nw8240 Mobile Workstation
Document Part Number: 372658-001
March 2005
This guide is a troubleshooting reference used for maintaining
and servicing the notebook. It provides comprehensive
information on identifying notebook features, components, and
spare parts; troubleshooting notebook problems; and performing
notebook disassembly procedures.
Microsoft and Windows are U.S. registered trademarks of Microsoft
Corporation. Intel and Pentium 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 nx8220 and nc8230 Notebook PCs
HP Compaq nw8240 Mobile Workstation
First Edition March 2005
Document Part Number: 372658-001
The HP Compaq nx8220 and nc8230 Notebook PCs and
HP Compaq nw8240 Mobile Workstation offer advanced
modularity, Intel® Pentium® M processors, and extensive
multimedia support.
1
HP Compaq nx8220 and nc8230 Notebook PCs and
HP Compaq nw8240 Mobile Workstation
Maintenance and Service Guide1–1
Product Description
1.1Features
■ Intel Pentium M 2.13-, 2.00-, 1.86-, 1.73-, or 1.60-GHz
processors, varying by notebook model
■ The following displays are available, varying by
notebook model:
❏ 15.4-inch, UXGA, TFT (1600 × 1200) with over
16.8 million colors
❏ 15.4-inch, WSXGA, TFT (1680 × 1050) with over
16.8 million colors
❏ 15.4-inch, WXGA, TFT (1366 × 768) with over
16.8 million colors
■ 80-, 60-, or 40-GB high-capacity hard drive, varying by
notebook model
■ 256-MB DDR2 synchronous DRAM (SDRAM) at 400 and
533 MHz, expandable to 2.0 GB
■ Microsoft® Windows® XP Home Edition or Windows XP
Professional, varying by notebook 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-TX 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 PCI IEEE 802.11a/b 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
1–2Maintenance and Service Guide
Product Description
■ External 90-watt AC adapter with 3-wire power cord
■ 8-cell Li-Ion battery pack
■ Stereo speakers
■ Volume up, volume mute, and volume down buttons
(full-featured models only)
Numerous references are made throughout this Maintenance
✎
and Service Guide to “full-featured” and “defeatured” units. A
notebook model is considered to be full-featured if it has
3 Universal Serial Bus ports and the following components:
■ Volume control buttons
■ Quick Launch buttons
■ Infrared port
■ SD Card slot
■ Serial port
■ S-Video-out port
■ Docking connector
A notebook model is considered to be defeatured if it has only
2 Universal Serial Bus ports and none of the components listed
above.
Maintenance and Service Guide1–3
Product Description
■ Support for the following optical drives:
❏ DVD-ROM drive
❏ DVD+RW/R and CD-RW Combo Drive
❏ DVD/CD-RW Combo Drive
■ Connectors:
❏ Infrared (full-featured models only)
❏ Audio-out (headphone)
❏ Audio-in (microphone)
❏ Universal Serial Bus (USB) v. 2.0 (3 ports on full-featured
❏ Serial port (full-featured models only)
❏ Power
❏ External monitor
❏ RJ-45 (network)
❏ RJ-11 (modem)
❏ S-Video-out (full-featured models only)
❏ IEEE 1394
❏ PC Card
notebook models, 2 ports on defeatured notebook models)
❏ Smart card
❏ SD Card (full-featured models only)
❏ Parallel port (full-featured models only)
❏ Primary battery
❏ Travel battery
❏ Docking connector (full-featured models only)
1–4Maintenance and Service Guide
1.2 Resetting the Notebook
If the notebook you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS:
1. Prepare the notebook for disassembly (refer to Section 5.3,
“Preparing the Notebook for Disassembly,” for more
information).
2. Remove the real-time clock (RTC) battery (refer to
Section 5.11, “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 notebook.
5. Connect AC power to the notebook. Do not reinsert any
battery packs at this time.
6. Turn on the notebook.
All passwords and all CMOS settings have been cleared.
Product Description
1.3Power Management
The notebook comes with power management features that
extend battery operating time and conserve power. The
notebook supports the following power management features:
■ Standby
■ Hibernation
■ Setting customization by the user
■ Hotkeys for setting the level of performance
■ Battery calibration
■ Lid switch standby/resume
■ Power/standby button
■ Advanced Configuration and Power Management (ACPM)
compliance
Maintenance and Service Guide1–5
Product Description
1.4 External Components
The external components on the front of the notebook are shown
below and described in Table 1-1.
Front Components
Tabl e 1-1
Front Components
ItemComponentFunction
1Wireless lightOn: an integrated wireless device (selected
models only) has been turned on.
2Power/standby light
1–6Maintenance and Service Guide
■ On: The notebook is on.
■ Blinking: The notebook is in
standby mode.
Tabl e 1-1
Product Description
Front Components
(Continued)
ItemComponentFunction
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
reaches a critical low-battery condition,
the battery light blinks more quickly.
■ Off: If the notebook is connected to
external power, the light is turned off
when all batteries in the notebook are
fully charged. If the notebook is not
connected to external power, the light is
turned off until the battery reaches a
low-battery condition.
4Integrated Drive
Electronics (IDE) drive
light
5Infrared port
(full-featured models
only)
6Display release latchOpens the notebook.
On: A drive in the hard drive bay or
MultiBay II is being accessed.
Provides wireless communication between
the notebook and an optional
IrDA-compliant device.
Maintenance and Service Guide1–7
Product Description
The external components on the right side of the notebook are
shown below and described in Table 1-2.
Right-Side Components
Tabl e 1-2
Right-Side Components
ItemComponentFunction
1Audio-out
(headphone) jack
2Internal microphoneRecords sound.
3Audio-in
(microphone) jack
4USB ports (2)
(full-featured models
only)
5MultiBay IIHolds an optional MultiBay II device.
6Serial port
(full-featured models
only)
1–8Maintenance and Service Guide
Produces system sound when connected to
optional powered stereo speakers,
headphones, headset, or television audio.
Connects an optional monaural
microphone.
Connect USB 1.1- and 2.0-compliant
devices to the notebook using a standard
USB cable, or connects an optional
External MultiBay or External MultiBay II to
the notebook. The External MultiBay must
also be connected to an external power
source.
Connects an optional serial device.
The external components on the left side of the notebook are
shown below and described in Table 1-3.
Left-Side Components
Tabl e 1-3
Left-Side Components
ItemComponentFunction
Product Description
1Security cable slotAttaches an optional security cable to the
2RJ-45 (network) jackConnects a network cable.
3RJ-11 (modem) jackConnects the modem cable.
4S-Video-out jack
(full-featured models
only)
Maintenance and Service Guide1–9
notebook.
Security solutions are designed to
Ä
act as deterrents. These deterrents
may not prevent a product from being
mishandled or stolen.
Is a 7-pin, dual-purpose jack.
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 notebook.
Product Description
Tabl e 1-3
Left-Side Components
(Continued)
ItemComponentFunction
5VentEnables airflow to cool internal
components.
To prevent overheating, do not
Ä
obstruct vents. Do not allow a hard
surface, such as a printer, or a soft
surface, such as pillows or thick rugs
or clothing, to block airflow.
61394 port (4 pin)Connects an optional 4-pin 1394 device,
such as a camcorder.
7USB portConnects USB 1.1- and 2.0-compliant
devices to the notebook using a standard
USB cable, or connects an optional
External MultiBay or External MultiBay II to
the notebook. The External MultiBay must
be connected to an external power source.
8Smart card readerAccepts smart cards.
9SD Card slotAccepts Secure Digital (SD) Memory
Cards.
10PC Card slotSupports optional Type I or Type II
PC Card.
11PC Card eject buttonEjects PC Cards from the PC Card slot.
1–10Maintenance and Service Guide
Product Description
The external components on the rear panel of the notebook are
shown below and described in Table 1-4.
Rear Panel Components
Table 1-4
Rear Panel Components
ItemComponentFunction
1Primary battery bayHolds the primary battery pack.
2Power connectorConnects an AC adapter or an optional
3External monitor portConnects an optional external VGA
Maintenance and Service Guide1–11
automobile or aircraft adapter.
monitor or projector.
Product Description
The standard keyboard components of the notebook are shown
below and described in Table 1-5.
Standard Keyboard Components
1–12Maintenance and Service Guide
Table 1-5
Standard Keyboard Components
ItemComponentFunction
Product Description
1Function keys
(f3,
f4,f8–f11)
2caps lock keyEnables caps lock and turns on the caps
3fn
4Windows logo keyDisplays the Windows Start menu.
5Windows
6Arrow keysMoves the cursor around the screen.
7Keypad keys (15)Can be used like the keys on an external
8num lock keyEnables numeric lock, turns on the
keyExecutes frequently used system
applications key
Execute frequently used system functions
when pressed in combination with the fn
key.
lock light.
functions when pressed in combination
with a function key or the esc key.
Displays a shortcut menu for items
beneath the pointer.
numeric keypad.
embedded numeric keypad, and turns
on the num lock light.
Maintenance and Service Guide1–13
Product Description
The notebook top components are shown below and described in
Table 1-6.
Top Components, Part 1
Table 1-6
Top Components, Part 1
ItemComponentFunction
1Display lid switchInitiates standby if the display is closed
while the notebook is turned on.
2Power/standby buttonWhen the notebook is:
■ Off, press to turn on the notebook.
■ On, briefly press to initiate hibernation.
■ In standby, briefly press to resume from
standby.
■ In hibernation, briefly press to restore
from hibernation.
If the system has stopped
✎
responding and Microsoft Windows
shutdown procedures cannot be
used, press and hold the
power/standby button for at least
4 seconds to turn off the notebook.
1–14Maintenance and Service Guide
Table 1-6
Product Description
Top Components, Part 1
(Continued)
ItemComponentFunction
3Info Center buttonEnables you to view a list of commonly
used software solutions.
4Wireless button
Wireless light
5Presentation mode
button
6Caps lock lightOn: caps lock is on.
7Num lock lightOn: num lock or the numeric keypad is on.
8Volume mute button
(full-featured models
only)
9Volume down button
(full-featured models
only)
10Volume up button
(full-featured models
only)
Enables and disables wireless LAN or
Bluetooth® devices (select models only).
On: A wireless LAN or Bluetooth device is
hardware enabled.
Turns on Presentation mode.
Turns off notebook sound.
Decreases system sound.
Increases system sound.
Maintenance and Service Guide1–15
Product Description
The notebook top components are continued below and described
in Table 1-7.
Top Components, Part 2
1–16Maintenance and Service Guide
Table 1-7
Top Components, Part 2
ItemComponentFunction
Product Description
1Pointing stick
(select models only)
2SpeakersProduce stereo sound.
3Pointing stick buttons
(select models only)
4TouchPad scroll zoneScrolls up or down.
5TouchPad buttonsFunction like the buttons on an
6TouchPadMoves the pointer and selects or activates
Moves the pointer and selects or activates
items on the screen.
Function like the buttons on an external
mouse.
external mouse.
items on the screen. Can be set to perform
other mouse functions, such as scrolling,
selecting, and double-clicking.
Maintenance and Service Guide1–17
Product Description
The external components on the bottom of the notebook are
shown below and described in Table 1-8.
Bottom Components
Table 1 -8
Bottom Components
ItemComponentFunction
1Primary battery bayHolds the primary battery pack.
2Primary battery locking
latch
1–18Maintenance and Service Guide
Secures the primary battery pack into
the battery bay. This latch must be set
to unlock to release the battery.
Table 1 -8
Product Description
Bottom Components
(Continued)
ItemComponentFunction
3Travel battery connectorConnects an optional travel battery.
4Memory module
compartment
5Hard drive bayHolds the primary hard drive.
6Vents (5)Enable airflow to cool internal
7Primary battery release
latch
8Docking connector
(full-featured models only)
Contains one memory module slot.
components.
To prevent overheating, do not
✎
obstruct vents. Do not allow a
hard surface, such as a printer, or
a soft surface, such as pillows
or thick rugs or clothing, to block
airflow.
Releases the primary battery pack from
the battery bay. The primary battery
locking latch must be in the unlocked
position.
Connects the notebook to an optional
docking device.
Maintenance and Service Guide1–19
Product Description
1.5Design Overview
This section presents a design overview of key parts and features
of the notebook. 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
■ Display
■ Hard drive
■ Intel Pentium M processors
■ Keyboard
■ Memory module
■ Mini PCI communications devices
■ PC Card
■ Pointing stick
■ To uc hP ad
■ Trusted platform module (TPM) security module
CAUTION: To properly ventilate the notebook, allow at least a 7.6--cm
Ä
(3-inch) clearance on the left and right sides of the notebook.
The notebook uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to be turned
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 applications.
Exhaust air is displaced through the ventilation grill located on
the left side of the notebook.
1–20Maintenance 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 preinstalled, ROM-based utility that can be
used even when the operating system is not working or will not
load. If the operating system is working, the notebook restarts the
operating system after you exit Computer Setup.
Pointing devices are not supported in Computer Setup; you
✎
must use the keyboard to navigate and make selections.
2
The menu tables later in this chapter provide an overview of
Computer Setup options.
Maintenance and Service Guide2–1
Troubleshooting
Accessing Computer Setup
The information and settings in Computer Setup are accessed
from the File, Security, To ol s, and Advanced menus.
1. Open Computer Setup by turning on or restarting the
tablet PC. Press
displayed in the lower-left corner of the screen.
❏ To change the language, press f2.
❏ To view navigation information, press f1.
❏ To return to the Computer Setup menu, press esc.
2. Select the File, Security, Tools, or Advanced menu.
3. To exit Computer Setup, choose one of the following:
❏ To exit without saving any changes, use the arrow keys to
select File > Ignore changes and exit, and then follow
the instructions on the screen.
❏ To exit and save all the settings you have entered, use the
arrow keys to select File > Save changes and exit, and
then follow the instructions on the screen.
Your preferences are set when you exit Computer Setup and take
effect when the notebook restarts.
f10 while the F10 = Based Setup message is
Restoring Computer Setup Defaults
To return all settings in Computer Setup to the values that were
set at the factory:
1. Open Computer Setup by turning on or restarting the
tablet PC. Press
displayed in the lower-left corner of the screen.
❏ To change the language, press f2.
❏ To view navigation information, press f1.
2. Use the arrow keys to select File > Restore defaults.
3. Select the Restore Defaults check box.
2–2Maintenance and Service Guide
f10 while the F10 = Based Setup message is
Troubleshooting
4. To confirm the restoration, press f10.
5. Select File > Save changes and exit, and then follow the
instructions on the screen.
When the computer restarts, the factory settings are restored, and
any identification information you have entered is saved.
Selecting from the File Menu
Table 2 -1
File Menu
SelectTo Do This
System Information■ View identification information about the
tablet PC and any battery packs in the system.
■ View specification information about the
processor, memory and cache size, video
revision, keyboard controller version, and
system ROM.
Save to floppySave system configuration settings to a diskette.
Restore from floppyRestore system configuration settings from a
diskette.
Restore defaultsReplace configuration settings in Computer Setup
with factory default settings. (Identification
information is retained.)
Ignore changes and exitCancel changes entered during the current
session. Then exit and restart the notebook.
Save changes and exitSave changes entered during the current session.
Then exit and restart the notebook. The changes
you save are in effect when the notebook restarts.
Maintenance and Service Guide2–3
Troubleshooting
Selecting from the Security Menu
Table 2 -2
Security Menu
SelectTo Do This
Administrator passwordEnter, change, or delete an HP Administrator
password.
Power-on passwordEnter, change, or delete a power-on password.
DriveLock passwordsEnable/disable DriveLock; change a DriveLock
user or master password.
DriveLock Settings are accessible only
✎
when you enter Computer Setup by turning
on (not restarting) the notebook.
Smart Card SecurityEnable/disable power-on support for smart cards.
This feature is supported by select smart
✎
card readers only.
Embedded Security■ Enable/Disable the embedded security chip.
■ Restore embedded security chip to factory
settings.
■ Enable/Disable power-on authentication
support.
■ Enable/Disable automatic DriveLock.
■ Reset power-on authentication credential
Embedded Security settings are accessible
✎
only if the notebook is equipped with an
embedded security chip.
Device securityEnable/Disable devices in the system.
Enable NIC for inclusion in MultiBoot.
System IDsEnter user-defined identification values.
2–4Maintenance and Service Guide
Troubleshooting
Selecting from the Tools Menu
Table 2 -3
Tools M enu
SelectTo Do This
HDD Self Test optionsRun a quick or comprehensive self-test on any
hard drive in the system.
Battery InformationView information about any battery packs in the
notebook.
Memory Check■ Run a self-test on memory modules in
the notebook.
■ View information about memory modules
installed in the notebook.
Maintenance and Service Guide2–5
Troubleshooting
Selecting from the Advanced Menu
Table 2 -4
Advanced Menu
SelectTo Do This
Language (or press f2)Change the Computer Setup language.
Boot options■ Enable/Disable MultiBoot, which sets a startup
sequence that can include most bootable
devices and media in the system.
■ Set the boot order.
Device options■ Swap the functions of the fn key and left ctrl
key.
■ Enable/Disable multiple pointing devices at
startup. (To set the notebook to support only a
single, usually nonstandard, pointing device at
startup, select Disable.)
■ Enable/Disable USB legacy support for a USB
keyboard, mouse, and hub. When USB legacy
support is enabled
❐ A USB keyboard, mouse, and hub work
even when a Windows operating system
is not loaded.
❐ The notebook starts from a bootable hard
drive, diskette drive diskette, or CD,
CD-RW, or DVD inserted into a drive
connected by a USB connector to the
notebook or to an optional docking
device.
■ Select a parallel port mode: EPP (Enhanced
Parallel Port), standard, bidirectional, or ECP
(Enhanced Capabilities Port).
■ Enable/Disable all settings in the SpeedStep
window. (When Disable is selected, the
tablet PC runs in Battery Optimized mode.)
Intel Pentium M 770 (2.13-GHz)
Intel Pentium M 760 (2.00-GHz)
Intel Pentium M 750 (1.86-GHz)
Intel Pentium M 740 (1.73-GHz)
Intel Pentium M 730 (1.60-GHz)
The following sections include some of the considerations
that you should keep in mind during disassembly and assembly
procedures.
As you remove each subassembly from the notebook, place
✎
the subassembly (and all accompanying screws) away from
the work area to prevent damage.
Plastic Parts
Using excessive force during disassembly and reassembly can
damage plastic parts. Use care when handling the plastic parts.
Apply pressure only at the points designated in the maintenance
instructions.
Cables and Connectors
CAUTION: When servicing the notebook, ensure that cables are
Ä
placed in their proper locations during the reassembly process.
Improper cable placement can damage the notebook.
Cables must be handled with extreme care to avoid damage.
Apply only the tension required to unseat or seat the cables
during removal and insertion. Handle cables by the connector
whenever possible. In all cases, avoid bending, twisting, or
tearing cables. Ensure that cables are routed in such a way that
they cannot be caught or snagged by parts being removed or
replaced. Handle flex cables with extreme care; these cables
tear easily.
4–2Maintenance and Service Guide
Removal and Replacement Preliminaries
4.3 Preventing Damage to
Removable Drives
Removable drives are fragile components that must be handled
with care. To prevent damage to the notebook, damage to a
removable drive, or loss of information, observe the following
precautions:
■ Before removing or inserting a hard drive, shut down the
notebook. If you are unsure whether the notebook is off or
in hibernation, turn the notebook on, and then shut it down
through the operating system.
■ Before removing a diskette drive or optical drive, ensure that
a diskette or disc is not in the drive and ensure that the optical
drive tray is closed.
■ Before handling a drive, ensure that you are discharged of
static electricity. While handling a drive, avoid touching the
connector.
■ Handle drives on surfaces covered with at least one inch
of shock-proof foam.
■ Avoid dropping drives from any height onto any surface.
■ After removing a hard drive, an optical drive, or a diskette
drive, place it in a static-proof bag.
■ Avoid exposing a hard drive to products that have magnetic
fields, such as monitors or speakers.
■ Avoid exposing a drive to temperature extremes or liquids.
■ If a drive must be mailed, place the drive in a bubble pack
mailer or other suitable form of protective packaging and label
the package “FRAGILE: Handle With Care.”
Maintenance and Service Guide4–3
Removal and Replacement Preliminaries
4.4 Preventing Electrostatic Damage
Many electronic components are sensitive to electrostatic
discharge (ESD). Circuitry design and structure determine the
degree of sensitivity. Networks built into many integrated circuits
provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt
silicon junctions.
A sudden discharge of static electricity from a finger or other
conductor can destroy static-sensitive devices or microcircuitry.
Often the spark is neither felt nor heard, but damage occurs.
An electronic device exposed to electrostatic discharge may not
be affected at all and can work perfectly throughout a normal
cycle. Or the device may function normally for a while, then
degrade in the internal layers, reducing its life expectancy.
4–4Maintenance and Service Guide
Removal and Replacement Preliminaries
4.5 Packaging and Transporting
Precautions
Use the following grounding precautions when packaging and
transporting equipment:
■ To avoid hand contact, transport products in static-safe
containers, such as tubes, bags, or boxes.
■ Protect all electrostatic-sensitive parts and assemblies with
conductive or approved containers or packaging.
■ Keep electrostatic-sensitive parts in their containers until
the parts arrive at static-free workstations.
■ Place items on a grounded surface before removing items
from their containers.
■ Always be properly grounded when touching a sensitive
component or assembly.
■ Store reusable electrostatic-sensitive parts from assemblies
in protective packaging or nonconductive foam.
■ Use transporters and conveyors made of antistatic belts and
roller bushings. Ensure that mechanized equipment used for
moving materials is wired to ground and that proper materials
are selected to avoid static charging. When grounding is not
possible, use an ionizer to dissipate electric charges.
Maintenance and Service Guide4–5
Removal and Replacement Preliminaries
4.6 Workstation Precautions
Use the following grounding precautions at workstations:
■ Cover the workstation with approved static-shielding material
(refer to
■ Use a wrist strap connected to a properly grounded work
surface and use properly grounded tools and equipment.
■ Use conductive field service tools such as cutters,
screwdrivers, and vacuums.
■ When fixtures must directly contact dissipative surfaces, use
fixtures made only of static-safe materials.
■ Keep the work area free of nonconductive materials such
as ordinary plastic assembly aids and Styrofoam.
■ Handle electrostatic-sensitive components, parts, and
assemblies by the case or PCM laminate. Handle these
items only at static-free workstations.
■ Avoid contact with pins, leads, or circuitry.
■ Turn off power and input signals before inserting or removing
connectors or test equipment.
Table 4-2, “Static-Shielding Materials”).
4–6Maintenance and Service Guide
Removal and Replacement Preliminaries
4.7 Grounding Equipment and
Methods
Grounding equipment must include either a wrist strap or a
foot strap at a grounded workstation.
■ When seated, wear a wrist strap connected to a grounded
system. Wrist straps are flexible straps with a minimum of
one megohm ±10% resistance in the ground cords. To provide
proper ground, wear a strap snugly against the skin at all times.
On grounded mats with banana-plug connectors, use alligator
clips to connect a wrist strap.
■ When standing, use foot straps and a grounded floor mat.
Foot straps (heel, toe, or boot straps) can be used at standing
workstations and are compatible with most types of shoes
or boots. On conductive floors or dissipative floor mats, use
foot straps on both feet with a minimum of one megohm
resistance between the operator and ground. To be effective,
the conductive strips must be worn in contact with the skin.
Other grounding equipment recommended for use in preventing
electrostatic damage includes:
■ Antistatic tape
■ Antistatic smocks, aprons, and sleeve protectors
■ Conductive bins and other assembly or soldering aids
■ Nonconductive foam
■ Conductive tabletop workstations with ground cords of
one megohm resistance
■ Static-dissipative tables or floor mats with hard ties to
the ground
■ Field service kits
■ Static awareness labels
■ Material-handling packages
■ Nonconductive plastic bags, tubes, or boxes
■ Metal tote boxes
■ Electrostatic voltage levels and protective materials
Maintenance and Service Guide4–7
Removal and Replacement Preliminaries
Table 4-1 shows how humidity affects the electrostatic voltage
levels generated by different activities.
Tabl e 4-1
Typical Electrostatic Voltage Levels
Relative Humidity
Event10%40%55%
Walking across carpet35,000 V15,000 V7,500 V
Walking across vinyl floor12,000 V 5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tube2,000 V700 V400 V
Removing DIPS from vinyl tray11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCB26,500 V20,000 V7,000 V
Packing PCBs in foam-lined box21,000 V11,000 V5,000 V
A product can be degraded by as little as 700 V.
✎
Table 4-2 lists the shielding protection provided by antistatic
bags and floor mats.
Table 4 -2
Static-Shielding Materials
MaterialUseVoltage Protection Level
Antistatic plasticBags1,500 V
Carbon-loaded plasticFloor mats7,500 V
Metallized laminateFloor mats5,000 V
4–8Maintenance and Service Guide
5
Removal and Replacement
Procedures
This chapter provides removal and replacement procedures.
There are 78 screws and screw locks, in 15 different sizes, that
may have to be removed, replaced, or loosened when servicing
the notebook. Make special note of each screw and screw lock
size and location during removal and replacement.
Refer to Appendix C, “Screw Listing,” for detailed information
on screw and screw lock sizes, locations, and usage.
Maintenance and Service Guide5–1
Removal and Replacement Procedures
5.1 Serial Number
Report the notebook serial number to HP when requesting
information or ordering spare parts. The serial number is
located on the bottom of the notebook.
Serial Number Location
5–2Maintenance and Service Guide
Removal and Replacement Procedures
5.2 Disassembly Sequence Chart
Use the chart below to determine the section number to be
referenced when removing notebook components.
Disassembly Sequence Chart
SectionDescription
5.3Preparing the notebook for
disassembly
Battery pack
5.4Hard drive2 loosened to remove the
5.5Notebook feet0
5.6MultiBay II device1
5.7External memory module1 loosened to remove the
5.8Bluetooth board1 loosened to remove the
5.9Keyboard2
5.10Switch cover3 to remove the switch cover
5.11RTC battery0
# of Screws Removed
0
hard drive cover
1 loosened to remove the
hard drive
6 to disassemble hard drive
memory module
compartment cover
Bluetooth board cover
2 removed to remove
Bluetooth board
6 to remove the LED board
5.12Thermal plate4 loosened
4 removed
Maintenance and Service Guide5–3
Removal and Replacement Procedures
Disassembly Sequence Chart
SectionDescription
5.13Heat sink4 loosened
5.14Processor1 loosened
5.15TPM security card1
5.16Internal memory module0
5.17TouchPad1
5.18Mini PCI communications card0
To prevent an unresponsive system and the display of a
Å
warning message, install only a Mini PCI device authorized
for use in your notebook by the governmental agency that
regulates wireless devices in your country. If you install a
device and then receive a warning message, remove the
device to restore notebook functionality. Then contact
Customer Care.
5.19Display assembly8
5.20Top cover2 rubber screw covers
5.21Modem board2
5.22System board7 screws
5.23System board frame2
(Continued)
# of Screws Removed
16 screws
2 screw locks
5.24Push button module1
5.25Serial connector module2 screw locks
5.26Audio board2
5–4Maintenance and Service Guide
Removal and Replacement Procedures
5.3 Preparing the Notebook for
Disassembly
Before you begin any removal or installation procedures:
1. Shut down the notebook. If you are unsure whether the
notebook is off or in hibernation, turn the computer on,
and then shut it down through the operating system.
2. Disconnect all external devices connected to the notebook.
3. Disconnect the power cord.
Battery Pack Spare Part Number Information
8-cell, 4.8-AHr372771-001
Maintenance and Service Guide5–5
Removal and Replacement Procedures
4. Remove the battery pack by following these steps:
a. Turn the notebook upside down with the rear panel
toward you.
b. Slide and release the battery pack lock latch 1 to the right.
(The battery pack partially disengages from the
notebook.)
c. Slide and hold the battery pack release latch 2 to the
right.
d. Slide the battery pack straight back 3 and remove it.
Removing the Battery Pack
Reverse the above procedure to install the battery pack.
5–6Maintenance and Service Guide
5.4 Hard Drive
Hard Drive Spare Part Number Information
Removal and Replacement Procedures
7200-rpm
60-GB380950-001
5400-rpm
80-GB
60-GB
40-GB
1. Prepare the notebook for disassembly (Section 5.3).
2. Loosen the 2 PM2.0×4.0 screws 1 that secure the hard drive
cover to the notebook.
3. Lift the left side of the hard drive cover and swing it to the
right 2.
4. Remove the hard drive cover.
The hard drive cover is included in the Miscellaneous
✎
Plastics Kit, spare part number 382691-001.
379810-001
379809-001
379808-001
Removing the Hard Drive Cover
Maintenance and Service Guide5–7
Removal and Replacement Procedures
5. Loosen the PM2.5×13.0 spring-loaded hard drive retention
screw 1.
6. Grasp the mylar tab 2 on the left side of the hard drive and
slide the hard drive to the right 3 to disconnect it from the
system board.
7. Remove the hard drive from the hard drive bay 4.
Removing the Hard Drive
5–8Maintenance and Service Guide
Removal and Replacement Procedures
8. Remove the following:
1 Two PM3.0×5.0 screws
2 Two PM3.0×4.0 screws
3 Two PM1.5×4.0 screws
9. Lift the frame straight up 4 to remove if from the hard drive.
10. Remove the hard drive connector 5 from the hard drive.
Removing the Hard Drive Frame and Connector
Reverse the above procedure to reassemble and install the
hard drive.
Maintenance and Service Guide5–9
Removal and Replacement Procedures
5.5 Notebook Feet
The notebook feet are adhesive-backed rubber pads. The feet are
included in the Miscellaneous Plastics Kit, spare part number
382691-001.
Replacing the Notebook Feet
5–10Maintenance and Service Guide
Removal and Replacement Procedures
5.6 MultiBay II Device
MultiBay II Device Spare Part Number Information
DVD-ROM drive
DVD+RW/R and CD-RW Combo Drive
DVD/CD-RW Combo Drive
1. Prepare the notebook for disassembly (Section 5.3).
2. Position the notebook with the left side toward you.
3. If it is installed, remove the T8M2.0×4.0 screw 1 that
secures the MultiBay II device to the notebook.
4. Gently press in on the left side of the device 2 to unlock it.
5. Slide the device 3 from the notebook.
373314-001
375557-001
373315-001
Removing the MultiBay II Device
Reverse the above procedure to install a MultiBay II device.
Maintenance and Service Guide5–11
Removal and Replacement Procedures
5.7 External Memory Module
Memory Module Spare Part Number Information
DDR2, PC2-4200, CL3, 533 MHz
1024 MB
512 MB
256 MB
DDR2, PC2-3200, CL3, 400 MHz
1024 MB
512 MB
256 MB
1. Prepare the notebook for disassembly (refer to Section 5.3).
2. Position the notebook with the front toward you.
373121-001
373120-001
373119-001
391021-001
391020-001
391019-001
5–12Maintenance and Service Guide
Removal and Replacement Procedures
3. Loosen the PM2.0×4.0 screw 1 that secures the memory
module compartment cover to the notebook.
4. Lift the right side of the cover up and swing it to the left 2.
5. Remove the memory module compartment cover.
The memory module compartment cover is included in the
✎
Miscellaneous Plastics Kit, spare part number 382691-001.
Removing the Memory Module Compartment Cover
Maintenance and Service Guide5–13
Removal and Replacement Procedures
6. Spread the retaining tabs 1 on each side of the memory
module socket to release the memory module. (The side of
the module opposite the socket rises away from the
notebook.)
7. Slide the module away from the socket at an angle 2.
8. Remove the memory module board.
Note that memory modules are slotted 3 to prevent incorrect
✎
installation into the memory module socket.
Removing the External Memory Module
Reverse the above procedure to install an external memory
module.
5–14Maintenance and Service Guide
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