HP vc4725 - Thin Client Operating and maintenance manual

Document Part Number: 460468-D61
October 2007
This book provides basic hardware information for this series of thin
clients.
Hardware Reference Guide
HP Compaq vc4725 Thin Client

© Copyright 2007 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
Microsoft, MS-DOS, Windows, and Windows Vista are trademarks of Microsoft
Corporation in the U.S. and other countries.
The only warranties for HP products and services are set forth in the Limited
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.
This document contains proprietary information that is protected by copyright.
No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of Hewlett-Packard
Company.
!WARNING: Text set off in this manner indicates that failure to follow
directions could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow
directions could result in damage to equipment or loss of information.
Hardware Reference Guide
HP Compaq vc4725 Thin Client
First Edition (October 2007)
Document Part Number: 460468-D61

Hardware Reference Guide www.hp.com iii
Contents
1 Product features
Standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Front panel components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 1–2
Rear panel components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Using the keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Additional function keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–6
Special mouse functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Serial number location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
2 Hardware upgrades
General hardware installation sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Removing and replacing the chassis cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Installing thin client options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
Installing additional DDR2 Memory . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . 2–5
CF card capacity upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 2–8
uDOC capacity upgrade. . .. . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Internal battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
A Specifications A-1
B Security provisions
Securing the thin client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–1
Chassis intrusion switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–2
Contents

iv www.hp.com Hardware Reference Guide
Contents
C Mounting the thin client
HP Quick Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1
Supported mounting options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–5
D Electrostatic discharge
Preventing electrostatic damage . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
Grounding methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–2
E Thin client operation
Routine thin client care . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E–1
Supported orientations. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2
F Shipping information
Shipping preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F–1
Important service repair information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2

Hardware Reference Guide www.hp.com 1-1
1
Product features
Standard features
The vc4725 includes the following features:
+
+
+
+
+
+
VIA C7 1.0GHz or more processor speed
Two DIMMs slots supports maximum 2GB memory
Flash storage options available from 512MB to 4GB
Optional internal hard drive
4 USB ports
Front audio ports
Product features

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Product features
Front panel components
Front panel components
Power button
Flash activity LED
Power LED
USB ports (2) Audio ports
2
2
Biometric device (optional)
5
5
3
3
6
6
4
4
1
1
2
2

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Product features
Rear panel components
Rear panel components
Cable lock slot
Key board connector Mouse connector
Monitor connector
Ethernet Rj45 connectorSerial port connector
Parallel connector
Power connector
Universal Serial Bus (USB)
connectors (2)
8
8
5
7
7
3
6
6
5
4
4
3
1
2
2
1
9
9

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Product features
Using the keyboard
Enhanced keyboard components
Caps Lock key Activates/deactivates the Caps Lock
Feature.
Scroll Lock key Activates/deactivates the Scroll Lock
Feature.
Num Lock key Activates/deactivates the Num Lock
Feature.
Ctrl key Use in combination with another key; its
function depends on the application
software you are using.
Windows Logo Opens the Start menu in Microsoft
1
Key Windows. Use in combination with other
keys to perform other functions. For more
information, see “Windows Logo Key”
on page1- 5.
1
2
3
4
5
Keyboard features
1Available in select geographic regions.

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Product features
Windows Logo Key
Enhanced keyboard components (Continued)
Alt key Use in combination with another key; its
function depends on the application
software you are using.
1
Application key Opens (like the right mouse button)
pop-up menus in a Microsoft Office
application. May perform other functions
in other software applications.
Editing keys Includes the following: Insert, Home,
Page Up, Delete, End, and Page Down.
Hold down Ctrl and Alt while pressing
Delete to restart the thin client.
Windows Logo Key + Tab Switch between open items.
Windows Logo Key + e Open My Computer.
Windows Logo Key + f Search for a file or folder.
Windows Logo Key + Ctrl + f Search for computers.
Windows Logo Key + m Minimize all windows.
Windows Logo Key + Shift + m Undo minimize all.
Windows Logo Key + Break Display the System Properties
dialog box.
Windows Logo Key + r Open the Run dialog box.
1Available in select geographic regions.
Use the Windows Logo Key in combination with other keys to
perform certain functions available in Windows operating systems.
6
7
8

Hardware Reference Guide www.hp.com 1-6
Product features
Additional function keys
Special mouse functions
Serial number location
Serial number location
The following key combinations also work on the HP Compaq
vc4725 thin client:
Alt + Esc Cycles through minimized applications.
Alt + Tab Cycles through open applications.
Alt + Shift + Tab Switches to the previous session.
Most software applications support the use of a mouse. The functions
assigned to each mouse button depend on the software applications
you are using.
Every thin client has a unique serial number that is located as shown
in the following illustration. Have this number available when
contacting HP customer service for assistance.

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2
Hardware upgrades
General hardware installation sequence
To ensure the proper installation of any thin client hardware option:
1. Back up any data, if necessary.
2. If the thin client is powered on:
a. Shut the unit down.
b. Turn the unit and any other attached devices off.
c. Disconnect the power cord from the wall outlet.
d. Disconnect any external devices or cables.
WARNING: To reduce the risk of personal injury from electrical shock
and/or hot surfaces, be sure to disconnect the power cord from the wall
outlet and allow the internal system components to cool before touching.
WARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telecommunications or telephone connectors into
the network interface controller (NIC) receptacles.
CAUTION: Static electricity can damage the electronic components of
the thin client or optional equipment. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. See for
more information.
Appendix D, “Electrostatic discharge”
!
!
Hardware upgrades

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Hardware upgrades
3. Remove the chassis cover. For more information, see “Removing
and replacing the chassis cover” on page 2-3.
4. If necessary, remove any hardware that you will replace.
5. Install or replace equipment. For removal and replacement
procedures, see the following sections:
❏ DDR2 DIMM upgrade on page 2-5
❏ CF (Compact Flash) card storage capacity upgrade 2-8
❏ uDOC storage upgrade on page 2-9
❏ Internal battery on page 2-10
6. Refix the chassis cover.
7. Reconnect any external devices and power cords.
8. Turn on the monitor, the thin client, and any devices you want
to test.
9. Load any necessary drivers.
10. Reconfigure the thin client, if necessary.

Hardware Reference Guide www.hp.com 2-3
Hardware upgrades
Removing and replacing the chassis cover
Removing the chassis cover
To install internal hardware, you must remove the chassis cover as
shown in the following procedures.
WARNING: Before removing the chassis cover, ensure that the thin
client is turned off and the power cord is disconnected from the electrical
outlet.
!
1. Remove the two screws that secure the cover to the chassis
2. Slide the cover about 1/2-inch toward the back of the unit,
then lift the cover off the chassis
1
2
To replace the chassis cover, reverse the previous procedure.
1
2
V
V

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Hardware upgrades
Installing Thin client options
The thin client offers several options, including
.
Before beginning the installation process, review
for procedures you should follow
before and after installing or replacing hardware.
Please refer to the below table for various storage options that are
supported or Not supported for vc4725 thinclient
vc4725 DDR2
DIMMs, CF card storage, uDOC storage, and security hardware. For
more information about security hardware, see
Appendix B,
“Security provisions”
“General hardware
installation sequence” on page 2-1
Option CF Card UDOC Hard Drive Result
1Supported
Supported
Supported
Not Supported
Not Supported
 

2
3 

4
5 

Hardware Reference Guide www.hp.com/in 2-5
Hardware Upgrades
!
!
!
!
The memory sockets on the system board can be populated with up to
two industry-standard DIMMs. These memory sockets are populated
with at least one preinstalled DIMM. To achieve the maximum
memory support, you can populate the system board with up to 2GB
of memory.
For proper system operation, if the computer supports DDR2
DIMMs, the DIMMs must be:
+Industry-standard 240-pin
DDR2 667 MHz DIMM
+256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies
T
+
single-sided and double-sided DIMMS
he system will not start if you install unsupported DIMMs.
CAUTION: The memory module sockets have gold metal contacts. When
upgrading the memory, it is important to use memory modules with gold
metal contacts to prevent corrosion and/or oxidation resulting from having
incompatible metals in contact with each other.
CAUTION: Static electricity can damage the electronic components of the
computer or optional cards. Before beginning these procedures, ensure
that you are discharged of static electricity by briefly touching a grounded
metal object. For more informations, refer to Appendix D, "Electrostatic
Discharge."
CAUTION: When handling a memory module, be careful not to touch any
of the contacts. Doing so may damage the module.
Installing Additional DDR2 Memory
Installing DIMMs

1
1
1
3
3
2
2
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Hardware upgrades
Installing a DIMM
Use the following procedure to upgrade the DDR2 DIMM
Module.
CAUTION: Ifnecessary, back up any data before continuing the
Installation.
1. Complete steps 1 through 4 of the
3. Open both latches of the memory module socket, and insert the
Memory module into the socket
A memory module can be installed in only one way. Match the notch
on the module with the tab on the memory socket.
4. Push the module down into the socket, ensuring that the module is
fully inserted and properly seated. Make sure the latches are in the
closed position
“General hardware
installation sequence” on page 2-1.
2. Locate memory socket on the system board
!

The computer should automatically recognize the additional memory
the next time you turn on the computer.
5. Complete steps 6 through 10 of the “General hardware
installation sequence” on page 2-2.
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Hardware upgrades

.
CF card capacity upgrade
Use the following procedure to upgrade CF
storage capacity
CAUTION: User must backup operating system, application software and
data before continuing the upgrade
1. Complete steps 1 through 4 of the
Complete steps 6 through 10 of the
(Compact Flash) card
“General hardware
installation sequence” on page 2-1.
“General hardware
installation sequence” on page 2-2.
2. Remove the existing CF card from the bracket
3. Insert the new CF card into the bracket
4.
5 Install the thin client software
!
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Hardware upgrades

uDOC capacity upgrade
Use the following procedure to upgrade
CAUTION: User must backup operating system, application software and
data before continuing the upgrade
uDOC capacity.
Complete steps 1 through of the
1 .Remove uDOC by compressing the plastic snap button and
simultaneously lifting the uDOC board.
2. Insert the new uDOC into the USB connector and push
uDOC board aligning the plastic snap button with the uDOC
hole.
3. Complete steps 6 through 10 of the “General hardware
installation sequence” on page 2-2.
4 . Install the thin client software.
4“General hardware installation
sequence” on page 2-1.
!
.
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Hardware upgrades
1
1

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Hardware upgrades
Internal battery replacement
Removing and replacing the internal battery
Use the following procedure to replace Internal battery
1. Complete steps 1 through 4 of the "General hardware installation
sequence" on page 2-1.
2. Locate the battery and battery holder on the system board.
3. Pull back the clip that is holding the battery in place, and then
remove the battery
4. Depending on the type of battery holder on the system board,
complete the following instructions to replace the battery.
a. To release the battery from its holder, squeeze the metal
clamp that extends above one edge of the battery. When the
battery pops up, lift it out
b. To insert the new battery, slide one edge of the replacement
battery under the holder with the positive side up. Push the
other edge down until the clamp snaps over the other edge
of the battery
5. Complete steps 6 through 10 of the "General hardware installation
sequence" on page 2-2.
1
1
111111
2
111111
2