HP TC4400 User Manual

Maintenance and Service Guide

HP Compaq tc4400 Tablet PC

Document Part Number: 383208-002

May 2006

This guide is a troubleshooting reference used for maintaining and servicing the tablet PC. It provides comprehensive information on identifying tablet PC features, components, and spare parts; troubleshooting tablet PC problems; and performing tablet PC disassembly procedures.

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 tc4400 Tablet PC Second Edition: May 2006 First Edition: March 2005 Document Part Number: 383208-002

1 Product Description

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

1.2 Resetting the Tablet PC. . . . . . . . . . . . . . . . . . . . . . . 1–4

1.3 Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

1.4 External Components . . . . . . . . . . . . . . . . . . . . . . . . 1–6

1.5 Design Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . 1–22

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 Plastics Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11

3.4 Cable Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12

3.5 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 3–13

3.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 3–15

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 Tablet PC for Disassembly . . . . . . . . . 5–5

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

5.5 Tablet PC 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–40

5.17 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–43

5.18 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–47

5.19 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–51

5.20 Infrared Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–53

5.21 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–55

5.22 Modem Module. . . . . . . . . . . . . . . . . . . . . . . . . . . 5–60

5.23 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–62

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

Product Description

The HP Compaq tc4400 Tablet PC offers advanced modularity, Intel® Core™ Duo and Celeron® M processors, and extensive multimedia support.

HP Compaq tc4400 Tablet 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 tablet PC 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

tablet PC model

■ 256-MB DDR2 synchronous DRAM (SDRAM) at 633 MHz

and 533 MHz, expandable to 4.0 GB

■ Microsoft® Windows® XP Tablet Edition

■ 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 PCI IEEE 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)

❏ Power

❏ External monitor

❏ RJ-45 (network)

❏ RJ-11 (modem)

❏ S-Video-out

❏ PC Card

❏ Digital Media Slot

❏ Primary battery pack

❏ Travel battery pack

❏ Docking connector

Maintenance and Service Guide 1–3

Product Description

1.2 Resetting the Tablet PC

If the tablet PC you are servicing has an unknown password, follow the steps below to clear 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 make sure 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 tablet PC for disassembly (refer to Section 5.3,

“Preparing the Tablet PC 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 tablet PC.

5. Connect AC power to the tablet PC. Do not reinsert any batteries at this time.

6. Turn on the tablet PC.

All passwords and all CMOS settings have been cleared.

1–4 Maintenance and Service Guide

1.3 Power Management

The tablet PC comes with power management features that extend battery pack operating time and conserve power. The tablet PC 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 tablet PC 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

2Power light ■ On: The computer is on.

1–6 Maintenance and Service Guide

a wireless local area network (WLAN) device and/or Bluetooth® device is turned on.

■ Blinking green: The computer is in standby.

■ Blinking rapidly: An HP Smart AC Adapter with a higher power rating should be connected.

■ Off: The computer is off or in hibernation.

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 batteries 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 tablet PC.

7 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 tablet PC 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

Produces computer sound when connected to optional power stereo speakers, headphones, ear buds, a headset, or television audio.

Connects an optional computer headset microphone, stereo array microphone, or monoarual microphone.

devices to the tablet PC using a standard USB cable, or connects an optional external MultiBay or external MultiBay II to the tablet PC. This USB port is a powered port that can be used without external power.

On select tablet PC models, the PC

✎

Card slot may be replaced with an optional smart card reader.

If your tablet PC 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 tablet PC 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

tablet PC.

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 tablet PC 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 tablet PC 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 tablet PC is

■ Off, slide toward the front of the tablet PC and release to turn on the tablet PC.

■ In standby, slide toward the front of the tablet PC and release to exit standby.

■ In hibernation, slide toward the front of the tablet PC and release to exit hibernation.

If the tablet PC has stopped responding and Microsoft Windows shutdown procedures cannot be used, slide toward the front of the tablet PC and hold for 4 seconds to turn off the tablet PC.

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 tablet PC 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 tablet PC 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 tablet PC.

Maintenance and Service Guide 1–13

Product Description

The standard keyboard components of the tablet PC 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 tablet PC 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 Turns on the presentation feature.

7 Volume mute button Mutes or restores volume.

8 Volume down button Decreases tablet PC sound.

9 Volume up button Increases tablet PC 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 tablet PC display components are shown below and described in Table 1-7.

Display Components

1–18 Maintenance and Service Guide

Table 1-7

Display Components

Item Component Function

Product Description

1 Tablet PC Input Panel

Launch button

2 Rotate button Switches the image between landscape

3 Q button When Windows is running, opens or

4 Windows Security

button

5 Jog dial Functions like the enter and the up and

6 Internal microphone Records sound.

7 Pen eject button Ejects the pen from the pen holder.

8 Pen holder Secures the pen to the tablet PC.

Opens the Microsoft Tablet PC Input Panel application, which includes a handwriting pad and an on-screen keyboard.

and portrait orientation.

closes the Q Menu.

When pressed while:

■ Windows is open, enters the ctrl+alt+delete command.

■ The Setup utility is open, enters the reset command.

down arrow keys on a standard keyboard.

■ Press inward to enter a command.

■ Rotate upward to scroll upward.

■ Rotate downward to scroll downward.

Maintenance and Service Guide 1–19

Product Description

The external components on the bottom of the tablet PC are shown below and described in Table 1-8.

Bottom Components

1–20 Maintenance and Service Guide

Product Description

Table 1 -8

Bottom Components

Item Component Function

1 Base enclosure cover Covers the display cable connector.

2 Docking connector Connects the tablet PC 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 1–21

Product Description

1.5 Design Overview

This section presents a design overview of key parts and features of the tablet PC. 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 Core Duo and Celeron M processors

■ Keyboard

■ Memory module

■ Mini Card WLAN devices

■ PC Card

■ Pointing stick

■ To uc hP ad

CAUTION: To properly ventilate the tablet PC, allow at least a 7.6-cm

(3-inch) clearance on the left and right sides of the tablet PC.

The tablet PC 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 tablet PC.

1–22 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 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.

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

+ 189 hidden pages