Compaq NC8230, NW8240, NX8220 User Manual

Maintenance and Service Guide

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

1 Product Description

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

1.2 Resetting the Notebook . . . . . . . . . . . . . . . . . . . . . . . 1–5

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

2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–7

3 Illustrated Parts Catalog

3.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2 Notebook Major Components. . . . . . . . . . . . . . . . . . 3–2

3.3 Miscellaneous Plastics Kit . . . . . . . . . . . . . . . . . . . 3–14

3.4 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 3–15

3.5 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . 3–16

3.6 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–17

3.7 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–19

4 Removal and Replacement Preliminaries

4.1 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . 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

Maintenance and Service Guide iii

Contents

5 Removal and Replacement Procedures

5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–3

5.3 Preparing the Notebook for Disassembly . . . . . . . . . 5–5

5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

5.5 Notebook Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10

5.6 MultiBay II Device . . . . . . . . . . . . . . . . . . . . . . . . . 5–11

5.7 External Memory Module . . . . . . . . . . . . . . . . . . . . 5–12

5.8 Bluetooth Board . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–15

5.9 Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17

5.10 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–22

5.11 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–26

5.12 Thermal Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–27

5.13 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–29

5.14 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–32

5.15 TPM Security Card . . . . . . . . . . . . . . . . . . . . . . . . 5–34

5.16 Internal Memory Module . . . . . . . . . . . . . . . . . . . 5–35

5.17 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–37

5.18 Mini PCI Communications Card. . . . . . . . . . . . . . 5–40

5.19 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–42

5.20 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–46

5.21 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–50

5.22 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–52

5.23 System Board Frame. . . . . . . . . . . . . . . . . . . . . . . 5–59

5.24 Push Button Module . . . . . . . . . . . . . . . . . . . . . . . 5–63

5.25 Serial Connector Module . . . . . . . . . . . . . . . . . . . 5–65

5.26 Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–67

6 Specifications

A Connector Pin Assignments

B Power Cord Set Requirements

C Screw Listing

Index

iv Maintenance and Service Guide

Product Description

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.

HP Compaq nx8220 and nc8230 Notebook PCs and HP Compaq nw8240 Mobile Workstation

Maintenance and Service Guide 1–1

Product Description

1.1 Features

■ 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

1–2 Maintenance 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 Guide 1–3

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)

1–4 Maintenance 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

1.3 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:

■ 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 Guide 1–5

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

Item Component Function

1 Wireless light On: an integrated wireless device (selected

models only) has been turned on.

2 Power/standby light

1–6 Maintenance and Service Guide

■ On: The notebook is on.

■ Blinking: The notebook is in

standby mode.

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 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.

4 Integrated Drive

Electronics (IDE) drive light

5 Infrared port

(full-featured models only)

6 Display release latch Opens 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 Guide 1–7

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

Item Component Function

1Audio-out

(headphone) jack

2 Internal microphone Records sound.

3Audio-in

(microphone) jack

4 USB ports (2)

(full-featured models only)

5 MultiBay II Holds an optional MultiBay II device.

6Serial port

(full-featured models only)

1–8 Maintenance 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

Item Component Function

Product Description

1 Security cable slot Attaches an optional security cable to the

2 RJ-45 (network) jack Connects a network cable.

3 RJ-11 (modem) jack Connects the modem cable.

4 S-Video-out jack

(full-featured models only)

Maintenance and Service Guide 1–9

notebook.

Security solutions are designed to

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)

Item Component Function

5 Vent Enables airflow to cool internal

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.

6 1394 port (4 pin) Connects an optional 4-pin 1394 device,

such as a camcorder.

7 USB port Connects 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.

8 Smart card reader Accepts smart cards.

9 SD Card slot Accepts Secure Digital (SD) Memory

Cards.

10 PC Card slot Supports optional Type I or Type II

PC Card.

11 PC Card eject button Ejects PC Cards from the PC Card slot.

1–10 Maintenance 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

Item Component Function

1 Primary battery bay Holds the primary battery pack.

2 Power connector Connects an AC adapter or an optional

3 External monitor port Connects an optional external VGA

Maintenance and Service Guide 1–11

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

1–12 Maintenance and Service Guide

Table 1-5

Standard Keyboard Components

Item Component Function

Product Description

1 Function keys

(f3,

f4, f8–f11)

2 caps lock key Enables caps lock and turns on the caps

3 fn

4 Windows logo key Displays the Windows Start menu.

5Windows

6 Arrow keys Moves the cursor around the screen.

7 Keypad keys (15) Can be used like the keys on an external

8 num lock key Enables numeric lock, turns on the

key Executes 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 Guide 1–13

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

Item Component Function

1 Display lid switch Initiates standby if the display is closed

while the notebook is turned on.

2 Power/standby button When 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.

1–14 Maintenance and Service Guide

Table 1-6

Product Description

Top Components, Part 1

(Continued)

Item Component Function

3 Info Center button Enables you to view a list of commonly

used software solutions.

4 Wireless button

Wireless light

5 Presentation mode

button

6 Caps lock light On: caps lock is on.

7 Num lock light On: num lock or the numeric keypad is on.

8 Volume mute button

(full-featured models only)

9 Volume down button

(full-featured models only)

10 Volume 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 Guide 1–15

Product Description

The notebook top components are continued below and described in Table 1-7.

Top Components, Part 2

1–16 Maintenance and Service Guide

Table 1-7

Top Components, Part 2

Item Component Function

Product Description

1 Pointing stick

(select models only)

2 Speakers Produce stereo sound.

3 Pointing stick buttons

(select models only)

4 TouchPad scroll zone Scrolls up or down.

5 TouchPad buttons Function like the buttons on an

6 TouchPad Moves 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 Guide 1–17

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

Item Component Function

1 Primary battery bay Holds the primary battery pack.

2 Primary battery locking

latch

1–18 Maintenance 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)

Item Component Function

3 Travel battery connector Connects an optional travel battery.

4 Memory module

compartment

5 Hard drive bay Holds the primary hard drive.

6 Vents (5) Enable airflow to cool internal

7 Primary battery release

latch

8 Docking 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 Guide 1–19

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 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

(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.

1–20 Maintenance and Service Guide

Troubleshooting

WARNING: Only authorized technicians trained by HP should repair

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.

The menu tables later in this chapter provide an overview of Computer Setup options.

Maintenance and Service Guide 2–1

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.

2–2 Maintenance 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

Select To 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 floppy Save system configuration settings to a diskette.

Restore from floppy Restore system configuration settings from a

diskette.

Restore defaults Replace configuration settings in Computer Setup

with factory default settings. (Identification information is retained.)

Ignore changes and exit Cancel changes entered during the current

session. Then exit and restart the notebook.

Save changes and exit Save 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 Guide 2–3

Troubleshooting

Selecting from the Security Menu

Table 2 -2

Security Menu

Select To Do This

Administrator password Enter, change, or delete an HP Administrator

password.

Power-on password Enter, change, or delete a power-on password.

Password options ■ Enable/Disable stringent security.

■ Enable/Disable required password on restart.

DriveLock passwords Enable/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 Security Enable/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 security Enable/Disable devices in the system.

Enable NIC for inclusion in MultiBoot.

System IDs Enter user-defined identification values.

2–4 Maintenance and Service Guide

Troubleshooting

Selecting from the Tools Menu

Table 2 -3

Tools M enu

Select To Do This

HDD Self Test options Run a quick or comprehensive self-test on any

hard drive in the system.

Battery Information View 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 Guide 2–5

Troubleshooting

Selecting from the Advanced Menu

Table 2 -4

Advanced Menu

Select To 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.)

2–6 Maintenance and Service Guide

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