HP Compaq tc4200 Manual

Maintenance and Service
Guide
HP Compaq tc4200 Tablet PC
Document Part Number: 383208-001
March 2005
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.

© 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 Compaq tc4200 Tablet PC
First Edition March 2005
Document Part Number: 383208-001

Maintenance and Service Guide v
Contents
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
2.2 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . 2–7
3 Software Update and Recovery
4 Illustrated Parts Catalog
4.1 Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 4–1
4.2 Tablet PC Major Components. . . . . . . . . . . . . . . . . . 4–2
4.3 Miscellaneous Plastics/
Hardware Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–12
4.4 Miscellaneous Cable Kit . . . . . . . . . . . . . . . . . . . . . 4–13
4.5 Miscellaneous (Not Illustrated). . . . . . . . . . . . . . . . 4–14
4.6 Sequential Part Number Listing . . . . . . . . . . . . . . . 4–16
5 Removal and Replacement Preliminaries
5.1 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
5.2 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . 5–2
5.3 Preventing Damage to Removable Drives . . . . . . . . 5–3
5.4 Preventing Electrostatic Damage . . . . . . . . . . . . . . . 5–4
5.5 Packaging and Transporting Precautions . . . . . . . . . 5–5
5.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 5–6
5.7 Grounding Equipment and Methods . . . . . . . . . . . . . 5–7

vi Maintenance and Service Guide
Contents
6 Removal and Replacement Procedures
6.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
6.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 6–3
6.3 Preparing the Tablet PC for Disassembly . . . . . . . . . 6–5
6.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–7
6.5 Tablet PC Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–11
6.6 Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . 6–12
6.7 External Memory Module . . . . . . . . . . . . . . . . . . . . 6–14
6.8 TPM Security Card . . . . . . . . . . . . . . . . . . . . . . . . . 6–17
6.9 Keyboard Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18
6.10 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–21
6.11 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–25
6.12 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–26
6.13 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–29
6.14 Internal Memory Module . . . . . . . . . . . . . . . . . . . 6–31
6.15 Mini PCI Communications Card. . . . . . . . . . . . . . 6–33
6.16 Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–35
6.17 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6–38
6.18 Top Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–44
6.19 TouchPad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–48
6.20 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–52
6.21 Infrared Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–54
6.22 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–56
6.23 Modem Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–59
6.24 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–61
7 Specifications
A Connector Pin Assignments
B Power Cord Set Requirements
C Screw Listing
Index

Maintenance and Service Guide 1–1
1
Product Description
The HP Compaq tc4200 Tablet PC offers advanced modularity,
Intel® Pentium® M and Celeron® M processors, and extensive
multimedia support.
HP Compaq tc4200 Tablet PC

1–2 Maintenance and Service Guide
Product Description
1.1 Features
■Intel Pentium M 2.13-, 2.00-, 1.86-, 1.73-, or 1.60-GHz
processors, or Intel Celeron M 1.50-GHz processor, varying
by tablet PC model
■12.1-inch, XGA, TFT (1024 × 768) display with over
16.8 million colors
■80-, 60-, or 40-GB high-capacity hard drive, varying by
tablet PC model
■256-MB DDR2 synchronous DRAM (SDRAM) at 400 MHz,
expandable to 2.0 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

Product Description
Maintenance and Service Guide 1–3
■External 65-watt AC adapter with 3-wire power cord
■6-cell Li-Ion battery pack, varying by tablet PC model
■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
❏SD Card
❏Primary battery
❏Travel battery
❏Docking connector

1–4 Maintenance and Service Guide
Product Description
1.2 Resetting the Tablet PC
If the tablet PC you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS:
1. Prepare the tablet PC for disassembly (refer to Section 6.3,
“Preparing the Tablet PC for Disassembly,” for more
information).
2. Remove the real-time clock (RTC) battery (refer to
Section 6.24, “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
battery packs at this time.
6. Turn on the tablet PC.
All passwords and all CMOS settings have been cleared.

Product Description
Maintenance and Service Guide 1–5
1.3 Power Management
The tablet PC comes with power management features that
extend battery 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 standby/resume
■Power/standby button
■Advanced Configuration and Power Management (ACPM)
compliance

1–6 Maintenance and Service Guide
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
Table 1-1
Front Components
Item Component Function
1 Wireless light On: One or more optional internal wireless
devices, such as a WLAN device and/or
Bluetooth® device, are turned on.
2 Power/standby light ■Green: The tablet PC is on.
■Blinking green: The tablet PC is
in standby mode.

Product Description
Maintenance and Service Guide 1–7
3Batterylight ■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 begins blinking more
quickly.
■Off: If the tablet PC is connected to
an external power source, the light
is turned off when all batteries in the
tablet PC are fully charged. If the
tablet PC is not connected to an external
power source, the light is turned off until
the battery reaches a low-battery
condition, when the light begins blinking
amber.
4 Integrated Drive
Electronics (IDE) drive
light
On: A drive in the hard drive bay is being
accessed.
5 Fast IrDA (select
models only)
Links the tablet PC to an optional remote
control.
6 Bluetooth module
(select models only)
Sends and receives Bluetooth device
signals.
7 Display release button Opens the tablet PC.
Table 1-1
Front Components
(Continued)
Item Component Function

1–8 Maintenance and Service Guide
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

Product Description
Maintenance and Service Guide 1–9
Table 1-2
Right-Side Components
Item Component Function
1Audio-out
(headphone) jack
Connects an optional headphone or
powered stereo speakers. Also connects
the audio function of an audio/video device,
such as a television or VCR.
2 Audio-in (microphone)
jack
Connects an optional monaural (single
sound channel) or stereo (dual sound
channel) microphone.
3 Powered USB port Connects USB 1.1- or 2.0-compliant
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.
4 PC Card slot eject
button
Ejects PC Cards from the PC Card slot.
5 PC Card slot Supports optional Type I, Type II, 32-bit
(CardBus), or 16-bit PC Cards.
6 SD Card slot Accepts SD (Secure Digital) Memory Cards
or MultiMediaCards.

1–10 Maintenance and Service Guide
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
Table 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 Enables airflow to cool internal
components.
ÄTo prevent overheating, do not
obstruct vents. Using the tablet PC
on a soft surface, such as a pillow,
blanket, rug, or thick clothing, may
block airflow.

Product Description
Maintenance and Service Guide 1–11
3 Wireless button (select
models only)
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 Enables you to view a list of commonly
used 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.
Table 1-3
Left-Side Components
(Continued)
Item Component Function

1–12 Maintenance and Service Guide
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

Product Description
Maintenance and Service Guide 1–13
Table 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
56K connectivity.
3 RJ-45 (network) jack Connects a network cable. Enabled with
10/100/1000BaseT connectivity.
4 Power connector Connects an AC adapter, an optional
AC adapter, or an optional power cable.
5 External monitor port Connects an optional VGA external monitor
or projector.
6 S-Video-out jack 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 tablet PC.

1–14 Maintenance and Service Guide
Product Description
The standard keyboard components of the tablet PC are shown
below and described in Table 1-5.
Standard Keyboard Components

Product Description
Maintenance and Service Guide 1–15
Table 1-5
Standard Keyboard Components
Item Component Function
1 Function keys (12) 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.
2caps lock key Enables caps lock and turns on the caps
lock light.
3fn key Executes frequently used system
functions when pressed in combination
with a function key or the esc key.
4 Windows logo key Displays the Microsoft Windows
Start menu.
5Windows
applications key
Displays a shortcut menu for items
beneath the pointer.
6 Arrow keys Moves the cursor around the screen.
7 Embedded numeric
keypad
Can be used like an external numeric
keypad.
8num lock key Enables numeric lock, turns on the
embedded numeric keypad, and turns
on the num lock light.

1–16 Maintenance and Service Guide
Product Description
The tablet PC top components are shown below and described in
Table 1-6.
Top Components