HP Pavilion dv4000, Compaq Presario V4000, Compaq Presario V400 Maintenance And Service Manual
Maintenance and Service
Guide
HP Pavilion dv4000 Notebook PC
Compaq Presario V4000 Notebook PC
Document Part Number: 377367-002
August 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.
© Copyright 2005 Hewlett-Packard Development Company, L.P.
Microsoft and Windows are U.S. registered trademarks of Microsoft
Corporation. Intel, Pentium, and Celeron 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 Pavilion dv4000 Notebook PC
Compaq Presario V4000 Notebook PC
Second Edition August 2005
First Edition March 2005
Document Part Number: 377367-002
Contents
1 Product Description
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2 Resetting the Notebook . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–5
1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–24
2 Troubleshooting
2.1 Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Accessing Computer Setup . . . . . . . . . . . . . . . . . . . . 2–2
Computer Setup Defaults . . . . . . . . . . . . . . . . . . . . . 2–2
Selecting from the File Menu . . . . . . . . . . . . . . . . . . 2–3
Selecting from the Security Menu . . . . . . . . . . . . . . 2–4
Selecting from the Tools Menu. . . . . . . . . . . . . . . . . 2–5
Selecting from the Advanced Menu . . . . . . . . . . . . . 2–6
2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–7
Maintenance and Service Guide iii
Contents
3 Illustrated Parts Catalog
3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1
3.2 Notebook Major Components. . . . . . . . . . . . . . . . . . 3–2
3.3 Display Assembly Subcomponents. . . . . . . . . . . . . 3–12
HP Pavilion dv4000 Models . . . . . . . . . . . . . . . . . . 3–12
3.4 Display Assembly Subcomponents. . . . . . . . . . . . . 3–14
Compaq Presario V4000 Models . . . . . . . . . . . . . . 3–14
3.5 Miscellaneous Doors/Covers Kit . . . . . . . . . . . . . . 3–16
3.6 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 3–17
3.7 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.8 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–20
3.9 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–22
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–2
5.3 Preparing the Notebook for Disassembly . . . . . . . . . 5–4
5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
5.5 Notebook Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10
5.6 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12
5.7 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–14
5.8 Mini PCI Communications Card. . . . . . . . . . . . . . . 5–16
5.9 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18
5.10 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–19
Contents
5.11 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–22
5.12 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24
5.13 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–25
5.14 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–30
5.15 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–46
5.16 Base Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–50
5.17 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–54
5.18 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–56
5.19 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–70
5.20 Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–72
5.21 USB Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–74
5.22 Bluetooth Board . . . . . . . . . . . . . . . . . . . . . . . . . . 5–77
Maintenance and Service Guide v
Contents
6 Specifications
A Connector Pin Assignments
B Power Cord Set Requirements
C Screw Listing
D Display Component Recycling
Index
vi Maintenance and Service Guide
1
Product Description
The HP Pavilion dv4000 Notebook PC 1 and Compaq
Presario V4000 Notebook PC 2 offer advanced modularity,
Intel® Pentium® M and Celeron® M processors, and extensive
multimedia support.
HP Pavilion dv4000 Notebook PC and Compaq Presario V4000
Notebook PC
Maintenance and Service Guide 1–1
Product Description
1.1 Features
■ Intel Pentium M 2.00-, 1.73-, 1.60-, or 1.50-GHz processors,
or Intel Celeron M 1.50-, 1.40-, or 1.30-GHz processors,
varying by notebook model
■ 15.4-inch, WXGA, TFT (1280 × 800) with BrightView
display, or 15.4-inch, WXGA, TFT (1280 × 800) display,
varying by notebook model
■ 100-, 80-, 60-, or 40-GB high-capacity hard drive, varying by
notebook model
■ 256-MB DDR synchronous DRAM (SDRAM) at 333 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 pointing device, including dedicated horizontal
(Compaq Presario V4000 models) and vertical scroll regions
■ 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 802.11b/g
WLAN device (select models only)
■ Support for one Type I or Type II PC Card slot, with support
for both 32-bit (CardBus) and 16-bit PC Cards
■ Support for ExpressCard slot
■ External 65-watt AC adapter with 3-wire power cord
■ 12- or 6-cell Li-Ion battery pack, varying by notebook model
■ Stereo speakers
■ Volume up, volume mute, and volume down buttons
■ QuickPlay buttons (select models only)
■ Support for the following optical drives:
❏ DVD±RW and CD-RW Combo Drive
❏ DVD/CD-RW Combo Drive
1–2 Maintenance and Service Guide
✎
Product Description
Numerous references are made throughout this Maintenance and
Service Guide to “full-featured” and “defeatured” models.
A model is considered to be full-featured if it has 4 Universal
Serial Bus ports and the following components:
■ Digital Media Slot/Memory Reader
■ Expansion port
■ ExpressCard slot
■ IEEE 1394 port
■ Infrared port
■ Quick Launch buttons (HP Pavilion dv4000 models only)
A notebook model is considered to be defeatured if it has only
2 Universal Serial Bus ports and none of the components listed
above.
■ Connectors:
❏ Audio-in (microphone)
❏ Audio-out (headphone)
❏ Digital Media Slot (full-featured models only)
❏ Expansion port (full-featured models only)
❏ ExpressCard slot (full-featured models only)
❏ External monitor
❏ IEEE 1394 (full-featured models only)
❏ Infrared (full-featured models only)
❏ PC Card
❏ Power
❏ Primary battery
❏ RJ-11 (modem)
❏ RJ-45 (network)
❏ S-Video-out
❏ Serial port (full-featured models only)
❏ Smart card
❏ Universal Serial Bus (USB) v. 2.0 (4 ports on full-featured
models, 2 ports on defeatured models)
Maintenance and Service Guide 1–3
Product Description
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. Enter an incorrect password and press
2. Repeat step 1 2 times.
After the third entry of the incorrect password, the notebook
responds with a “System Disabled” message and provides an
override password.
3. Access MS/DOS by clicking Start > All Programs >
Accessories > Command Prompt.
4. Enter “unlock6 xxxxx 0,” where “xxxxx” is the password
generated by the notebook in step 2.
The notebook responds with another system-generated
password. This password can be used to reset the notebook
and clear all CMOS settings.
1.3 Power Management
The notebook comes with power management features that
extend battery operating time and conserve power. The
notebook supports the following power management features:
enter.
■ 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
1–4 Maintenance and Service Guide
1.4 External Components
The external components on the front of the notebook are shown
below and described in Table 1-1. Depending on your notebook
model, component locations may vary.
Front Components
Product Description
Table 1 -1
Front Components
Item Component Function
1 Power/standby light ■ On: Notebook is turned on.
■ Blinking: Notebook is in standby.
■ Off: Notebook is off or in hibernation.
2Battery light ■ On: The battery pack is charging.
■ Blinking: The battery pack has reached a
low-battery condition.
■ Off: The battery pack is fully charged or
not inserted.
3 Integrated Drive
Electronics (IDE) drive
light
4 Consumer infrared
(IR) lens (select
models only)
On or blinking: The internal hard drive or an
optical drive is being accessed.
Links the notebook to an optional remote
control.
5 Speakers Produce stereo sound.
6 Display release button Opens the notebook.
Maintenance and Service Guide 1–5
Product Description
The external components on the right side of the HP Pavilion
dv4000 are shown below and described in Table 1-2. Depending
on your notebook model, component locations may vary.
Right-Side Components, HP Pavilion dv4000
1–6 Maintenance and Service Guide
Product Description
Table 1 -2
Right-Side Components, HP Pavilion dv4000
Item Component Function
1 Optical drive Supports an optical disc, such as a CD
or DVD.
2Audio-out
(headphone) jack
(full-featured
models only)
3 Audio-in (microphone)
jack (full-featured
models only)
4 USB ports
(full-featured
models only)
Number of USB ports vary by model.
✎
5 Monitor port
(full-featured
models only)
6S-Video-out jack
(full-featured
models only)
7 Security cable slot Attaches an optional security cable to the
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 stereo microphone.
Connect optional USB devices.
Connects an optional VGA monitor or
projector.
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
notebook.
The purpose of security solutions is to act as a deterrent. These
✎
solutions do not prevent the product from being mishandled or
stolen.
Maintenance and Service Guide 1–7
Product Description
The external components on the right side of the
Compaq Presario V4000 are shown below and described
in Table 1-3. Depending on your notebook model, component
locations may vary.
Right-Side Components, Compaq Presario V4000
1–8 Maintenance and Service Guide
Product Description
Table 1 -3
Right-Side Components, Compaq Presario V4000
Item Component Function
1 Optical drive Supports an optical disc, such as a CD
or DVD.
2 Audio-out (headphone)
jack (full-featured
models only)
3 Audio-in (microphone)
jack (full-featured
models only)
4 USB ports
(full-featured
models only)
Number of USB ports vary by model.
✎
5 Monitor port
(full-featured
models only)
6 S-Video-out jack
(full-featured
models only)
7 Security cable slot Attaches an optional security cable to the
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 stereo microphone.
Connect optional USB devices.
Connects an optional VGA monitor or
projector.
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
notebook.
The purpose of security solutions is to act as a deterrent. These
✎
solutions do not prevent the product from being mishandled or
stolen.
Maintenance and Service Guide 1–9
Product Description
The external components on the left side of the HP Pavilion
dv4000 are shown below and described in Table 1-4. Depending
on your notebook model, component locations may vary.
Left-Side Components, HP Pavilion dv4000
Table 1 -4
Left-Side Components, HP Pavilion dv4000
Item Component Function
1 Power connector Connects the AC adapter cable.
2 RJ-11 (modem) jack Connects a modem cable (not included).
3 RJ-45 (network) jack Connects a network cable (not included).
4 Expansion port 2
(full-featured
models only)
The notebook has only one expansion port. The term
✎
5 USB ports Connect optional USB devices.
describes the type of expansion port.
port 2
Connects the notebook to an optional
docking device.
expansion
1–10 Maintenance and Service Guide
Table 1 -4
Product Description
Left-Side Components, HP Pavilion dv4000
Item Component Function
6 1394 port (4-pin;
full-featured
models only)
7 Digital Media Slot
(full-featured
models only)
8 Digital Media Slot
light (full-featured
models only)
9 ExpressCard slot
(full-featured
models only)
10 PC Card slot Supports an optional Type I or Type II 32-bit
Connects an optional 1394a device such as
a scanner, a digital camera, or a digital
camcorder.
Supports the following optional digital
cards: SD (Secure Digital) Memory Card,
SD I/O Card, Memory Stick, Memory Stick
Pro, MultiMediaCard, xD-Picture Card, and
SmartMedia.
On: An optional digital card is being
accessed.
Supports an optional ExpressCard.
(CardBus) or 16-bit PC Card.
(Continued)
11 PC Card eject button Ejects PC Cards from the PC Card slot.
12 Monitor port
(full-featured
models only)
13 S-Video-out jack
(full-featured
models only)
14 Audio-in (microphone)
jack (full-featured
models only)
15 Audio-out (headphone)
jack (defeatured
models only)
Maintenance and Service Guide 1–11
Connects an optional VGA monitor or
projector.
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
Connects an optional stereo microphone.
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
Product Description
The external components on the left side of the Compaq Presario
V4000 are shown below and described in Table 1-5. Depending
on your notebook model, component locations may vary.
Left-Side Components, Compaq Presario V4000
Table 1 -5
Left-Side Components, Compaq Presario V4000
Item Component Function
1 Power connector Connects the AC adapter cable.
2 RJ-11 (modem) jack Connects a modem cable (not included).
3 RJ-45 (network) jack Connects a network cable (not included).
4 Expansion port 2
(full-featured
models only)
The notebook has only one expansion port. The term
✎
5 USB ports Connect optional USB devices.
describes the type of expansion port.
port 2
Connects the notebook to an optional
docking device.
expansion
Number of USB ports vary by model.
✎
1–12 Maintenance and Service Guide
Table 1 -5
Product Description
Left-Side Components, Compaq Presario V4000
Item Component Function
6 1394 port (4-pin;
full-featured
models only)
7 Memory Reader
(full-featured
models only)
8 Memory Reader
light (full-featured
models only)
9 ExpressCard slot
(full-featured
models only)
10 PC Card slot Supports an optional Type I or Type II 32-bit
Connects an optional 1394a device such as
a scanner, a digital camera, or a digital
camcorder.
Supports the following optional digital
cards: SD (Secure Digital) Memory Card,
SD I/O Card, Memory Stick, Memory Stick
Pro, MultiMediaCard, xD-Picture Card, and
SmartMedia.
On: An optional digital card is being
accessed.
Supports an optional ExpressCard.
(CardBus) or 16-bit PC Card.
(Continued)
11 PC Card eject button Ejects PC Cards from the PC Card slot.
12 Monitor port
(full-featured
models only)
13 S-Video-out jack
(defeatured
models only)
14 Audio-in (microphone)
jack (defeatured
models only)
15 Audio-out (headphone)
jack (defeatured
models only)
Maintenance and Service Guide 1–13
Connects an optional VGA monitor or
projector.
Connects the video function of an optional
S-Video device, such as a television, VCR,
or video capture card.
Connects an optional stereo microphone.
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
Product Description
The standard keyboard components of the notebook are shown
below and described in Table 1-6.
Standard Keyboard Components
1–14 Maintenance and Service Guide
Table 1-6
Standard Keyboard Components
Item Component Function
Product Description
1 fn
2 caps lock key Enables caps lock and turns on the caps
3 f1 to f12 keys (12) Perform system and application tasks.
4 num lock key Enables numeric lock, turns on the
5 Embedded numeric
6 Arrow keys Move the cursor around the screen.
7Windows
8 Windows logo key Displays the Microsoft Windows
key Combines with other keys to perform
system tasks as hotkeys. For example,
pressing fn+f7 decreases screen
brightness.
lock light.
When combined with fn, function keys
perform additional tasks as hotkeys.
embedded numeric keypad, and turns
on the num lock light.
Can be used like the keys on an external
keypad keys (15)
applications key
numeric keypad.
Displays a shortcut menu for items
beneath the pointer.
Start menu.
Maintenance and Service Guide 1–15
Product Description
The top components on HP Pavilion dv4000 models are shown
below and described in Table 1-7.
Top Components, HP Pavilion dv4000 Models
Table 1-7
Top Components, HP Pavilion dv4000
Item Component Function
1 Power/standby light ■ On: Notebook is turned on.
■ Blinking: Notebook is in standby.
■ Off: Notebook is off or in hibernation.
2 Power/standby button When the notebook is
■ Off, press to start 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 Windows
✎
shutdown procedures cannot be used, press and hold for at
least 4 seconds to turn off the notebook.
1–16 Maintenance and Service Guide
Table 1-7
Product Description
Top Components, HP Pavilion dv4000
Item Component Function
3 Quick Launch buttons
(select models only)
4 Volume mute button Mutes or restores volume.
5 Wireless light
(select models only)
To establish a wireless connection, a wireless network must
✎
already be set up.
6 Wireless button
(select models only)
To establish a wireless connection, a wireless network must
✎
already be set up.
7 Volume down button Decreases system volume.
8 Volume up button Increases system volume.
9 Display switch Initiates standby when the notebook is
Launch default multimedia, digital imaging,
or music applications (vary by model).
On: One or more internal wireless devices
have been turned on.
Turns the wireless functionality on or off,
but does not create a wireless connection.
closed.
(Continued)
Maintenance and Service Guide 1–17
Product Description
The top components on Compaq Presario V4000 models are
shown below and described in Table 1-8.
Top Components, Compaq Presario V4000 Models
1–18 Maintenance and Service Guide
Table 1-8
Top Components, Compaq Presario V4000 Models
Item Component Function
Product Description
1 Wireless button
(select models only)
To establish a wireless connection, a wireless network must
✎
already be set up.
2 Power/standby button When the notebook is
If the system has stopped responding and Windows
✎
shutdown procedures cannot be used, press and hold for at
least 4 seconds to turn off the notebook.
3 Volume down button Decreases system volume.
4 Volume mute button
Volume mute light
Turns the wireless functionality on or off,
but does not create a wireless connection.
■ Off, press to start the notebook.
■ On, briefly press to initiate hibernation.
■ In standby, briefly press to resume from
standby.
■ In hibernation, briefly press to restore
from hibernation.
Mutes or restores volume.
On: Volume is muted.
5 Volume up button Increases system volume.
6 Display switch Initiates standby when the notebook is
closed.
Maintenance and Service Guide 1–19
Product Description
The HP Pavilion dv4000 notebook TouchPad components are
shown below and described in Table 1-9.
TouchPad Components, HP Pavilion dv4000
Table 1-9
TouchPad Components, HP Pavilion dv4000
Item Component Function
1 TouchPad Moves the pointer.
2 Left and right TouchPad
buttons
3 Display release button Opens the notebook.
4 TouchPad vertical
scroll zone
Function like the left and right buttons on
an external mouse.
Scrolls up or down.
1–20 Maintenance and Service Guide
Product Description
The Compaq Presario V4000 notebook TouchPad components
are shown below and described in Table 1-10.
TouchPad Components, Compaq Presario V4000
Table 1-10
TouchPad Components, Compaq Presario V4000
Item Component Function
1 TouchPad Moves the pointer.
2 TouchPad horizontal
scroll zone
3 Left and right TouchPad
buttons
4 TouchPad vertical
scroll zone
Scrolls left or right.
Function like the left and right buttons on
an external mouse.
Scrolls up or down.
Maintenance and Service Guide 1–21
Product Description
The external components on the bottom of the notebook are
shown below and described in Table 1-11.
Bottom Components
Table 1-11
Bottom Components
Item Component Function
1 Battery bay Holds a battery pack.
2 Vents (4) Provide airflow to cool internal
components.
To prevent overheating, do not obstruct vents. Do not allow a
Ä
hard surface, such as a printer, or a soft surface, such as
pillows or thick rugs or clothing, to block airflow.
3 Hard drive bay Holds the internal hard drive.
1–22 Maintenance and Service Guide
Table 1-11
Product Description
Bottom Components
Item Component Function
4 Optical drive Supports an optical disc, such as a CD
or DVD.
5 Labels area Contains the serial number and other
information labels.
6 Battery pack release latch Releases a battery pack from the
battery bay.
7 Memory module cover Contains 2 memory module slots that
support replaceable memory modules.
The number of preinstalled memory
modules varies by notebook model.
Mini PCI compartment
cover
To prevent an unresponsive system and the display of a
Ä
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 an
unauthorized device and then receive a warning message,
remove the device to restore notebook functionality. Then
contact Customer Care.
Holds an optional wireless LAN device
(select models only).
(Continued)
8 Thermal cover Provides access to the heat sink and
Maintenance and Service Guide 1–23
processor.
Product Description
1.5 Design 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 and Celeron M processors
■ Keyboard
■ Memory module
Ä
■ Mini PCI communications devices
■ PC Card
■ Tou ch Pad
CAUTION: To properly ventilate the notebook, allow at least a 7.6-cm
(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.
1–24 Maintenance and Service Guide
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