HP Compaq dx2100 MT Series Operating and maintenance manual

Hardware Reference Guide
HP Compaq dx2100 Microtower Business
PC
Document Part Number: 403288-001
September 2005
This guide provides basic information about upgrading this computer
model.

© Copyright 2005 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
Microsoft and Windows 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 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.
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.
ÅWARNING: Text set off in this manner indicates that failure to follow
directions could result in bodily harm or loss of life.
ÄCAUTION: 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 dx2100 Microtower Business PC
First Edition (September 2005)
Document Part Number: 403288-001

Hardware Reference Guide www.hp.com iii
Contents
1 Hardware Upgrades
Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Removing the Access Panel and the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Removing a 5.25" Drive Bezel Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Installing Additional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
DDR2-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Populating DIMM Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7
Installing DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8
Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–10
Replacing or Upgrading a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–12
Locating Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13
Removing a 5.25" Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–14
Removing a Diskette Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–16
Removing a 3.5" Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–17
2 Battery Replacement
Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
3 Computer Operating Guidelines, Routine Care and
Shipping Preparation
Computer Operating Guidelines and Routine Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
Optical Drive Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
Shipping Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

iv www.hp.com Hardware Reference Guide
Contents
4ElectrostaticDischarge
Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

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1
Hardware Upgrades
HP Compaq dx2100 Microtower
✎The drive configuration shown above may be different than your
computer model.
Serviceability Features
The Microtower computer includes features that make it easy to
upgrade and service. A Torx T-15 screwdriver is needed for many of
the installation procedures described in this chapter.

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Hardware Upgrades
Warnings and Cautions
Before performing upgrades be sure to carefully read all of the
applicable instructions, cautions, and warnings in this guide.
ÅWARNING: 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.
ÅWARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telecommunications/telephone connectors into
the network interface controller (NIC) receptacles.
ÄCAUTION: Static electricity can damage the electrical components of the
computer or optional equipment. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. See Chapter 4, “Electrostatic Discharge” for more
information.
ÄCAUTION: When the computer is plugged into an AC power source,
voltage is always applied to the system board. You must disconnect the
power cord from the power source before opening the computer to
prevent system board damage.
Removing the Access Panel and the Front Bezel
ÄCAUTION: Before removing the computer access panel, ensure that the
computer is turned off and that the power cord is disconnected from the
electrical outlet.
1. Turn off the computer properly through the operating system and
turn off any external devices.
2. Disconnect the power cord from the power outlet and the
computer, and disconnect any external devices.

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Hardware Upgrades
3. Remove the screw that secures the access panel to the computer
chassis 1.
4. Slide the access panel back about 1.25 cm (1/2 inch), then lift it
away from and off the unit 2.
Removing the Access Panel
✎To replace the access panel, reverse the removal steps.

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Hardware Upgrades
5. To remove the front bezel, press inward on all three tabs on the
left side of the bezel 1then rotate the bezel off the chassis 2,
beginning with the left side then the right side.
Removing the Front Bezel
✎To replace the front bezel, insert the two hooks on the right side of the
bezel into the rectangular holes on the chassis then rotate the bezel
into place so that the three tabs on the left side of the bezel snap into
the slots on the chassis.

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Hardware Upgrades
Removing a 5.25" Drive Bezel Blank
If the computer was not shipped with a drive in the 5.25" option bay,
the bay will be covered by a bezel blank. If you add a drive to the
option bay, you must first remove the bezel blank.
1. Turn off the computer properly through the operating system and
turn off any external devices.
2. Disconnect the power cord from the power outlet and the
computer, and disconnect any external devices.
3. Remove the access panel and front bezel. Refer to “Removing the
Access Panel and the Front Bezel.”
4. While facing the inside of the front bezel, press the two retaining
tabs on the right towards the outer edge of the bezel 1and pull
the bezel blank inwards to remove it 2.
Removing a Bezel Blank
✎To install a bezel blank, slide the left side of the blank into the two
retainer slots on the left side of the front bezel then snap the right side
of the blank into place.

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Hardware Upgrades
Installing Additional Memory
The computer comes with double data rate 2 synchronous dynamic
random access memory (DDR2-SDRAM) dual inline memory
modules (DIMMs).
DIMMs
The memory sockets on the system board can be populated with up to
four 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 4GB
of memory configured in a high-performing dual channel mode.
DDR2-SDRAM DIMMs
For proper system operation, the DDR2-SDRAM DIMMs must be:
■industry-standard 240-pin
■unbuffered PC2 4200 533 MHz-compliant
■1.8 volt DDR2-SDRAM DIMMs
The DDR2-SDRAM DIMMs must also:
■support CAS latency 4 (CL = 4) for PC2 4200 533 MHz
■contain the mandatory JEDEC SPD information
In addition, the computer supports:
■256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies
■single-sided and double-sided DIMMS
■DIMMs constructed with x8 and x16 DDR devices; DIMMs
constructed with x4 SDRAM are not supported
✎The system will not start if you install unsupported DIMMs.