HP (Hewlett-Packard) 355856-001 User Manual

Hardware Reference Guide

HP Compaq Business Desktop d228 and
d248 Microtower

Document Part Number: 355856-001

November 2003

This guide provides basic information about upgrading this series of
computers.

© Copyright 2003 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.

Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft
Corporation in the U.S. and other countries.

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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

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directions could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow

Ä

directions could result in damage to equipment or loss of information.

Hardware Reference Guide

HP Compaq Business Desktop d228 and d248 Microtower

TFirst Edition (November 2003)
Document Part Number: 355856-001

Contents

1 Hardware Upgrades

Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

Removing the Access Panel and the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

Removing Front Drive Bezels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

5.25” Drive Bezel Blank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

Diskette Drive Bezel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

Installing Additional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7

DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7

DDR-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7

Single Channel and Dual Channel Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8

Installing Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–11

Replacing or Upgrading a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13

Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–14

Removing a 5.25” Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–15

Removing a Diskette Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–16

Removing the Lower Drive Cage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–17

Removing a 3.5” Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–19

2 Battery Replacement

Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

3 Routine Care & Shipping Information

Routine Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

Optical Disk Drive Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

Shipping Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

Hardware Reference Guide iii

Contents

4 Electrostatic Discharge

Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

Index

iv Hardware Reference Guide

Hardware Upgrades

HP Compaq d228, d230, and d248 Microtower

1

Serviceability Features

The Microtower computer includes features that make it easy to
upgrade and service. No tools are needed for most of the installation
procedures described in this chapter.

Hardware Reference Guide 1–1

Hardware Upgrades

Warnings and Cautions

Before performing upgrades be sure to carefully read all of the
applicable instructions, cautions, and warnings in this guide.

WARNING: To reduce the risk of personal injury from electrical shock

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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

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equipment, do not plug telecommunications/telephone connectors into the
network interface controller (NIC) receptacles.

CAUTION: Static electricity can damage the electrical components of the

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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.

CAUTION: Before removing the computer cover, ensure that the

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computer is turned off and that the power cord is disconnected from the
electrical outlet.

Removing the Access Panel and the Front Bezel

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 two screws that secure the access panel to the
computer chassis. Some access panels use captive thumbscrews.

Remove the right access panel to upgrade memory or an expansion

✎

card.
Remove the left access panel to upgrade a drive.

1–2 Hardware Reference Guide

Hardware Upgrades

4. Slide the access panel back about 1 inch (2.5 cm), then lift it away
from and off the unit.

Removing the Access Panels

To replace the access panel, reverse the removal steps.
The two access panels are physically identical. One access panel has

✎

captive thumbscrews that may be removed by unscrewing them.

Hardware Reference Guide 1–3

Hardware Upgrades

5. To remove the front bezel, grasp the bottom of the front panel
below the lowest air vent and pull the panel out and up to release
it from the chassis.

Removing the Front Bezel

To install the front bezel, insert the top two latches into their
respective holes in the chassis and push the bezel in until it is fully
seated.

When replacing the front bezel, ensure that the top of the front bezel

✎

is flush with the top of the chassis before pressing it into place.

1–4 Hardware Reference Guide

Removing Front Drive Bezels

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.

4. Remove the front bezel.

5.25” Drive Bezel Blank

Press one of the retaining tabs on the inside of the large bezel towards
the outer edge of the bezel to release the bezel blank. At the same
time, pull the bezel blank inwards to remove it from the main bezel.

Hardware Upgrades

Removing the Bezel Blank

To install a bezel blank, reverse the removal procedure.

Hardware Reference Guide 1–5

Hardware Upgrades

Diskette Drive Bezel

Depending on the computer configuration, you may have a bezel

✎

blank in this position. If you do not have a drive in this slot, you may
choose to install a 3.5-inch device (such as a diskette drive, hard
drive, or Zip drive) later on.

Pull the right retaining tab towards the center of the main bezel. At
the same time, pull the bezel inwards to remove it from the main
bezel.

Removing the Bezel Blank

To install a diskette drive bezel, reverse the removal procedure.

1–6 Hardware Reference Guide

Installing Additional Memory

The computer comes with Double Data Rate-Synchronous Dynamic
Random Access Memory (DDR-SDRAM) Dual Inline Memory
Modules (DIMMs).

DIMMs

The memory sockets on the system board can be populated with
industry-standard DIMMs. These memory module slots are populated
with at least one preinstalled memory module. To achieve the
maximum memory support, you may be required to replace the
preinstalled DIMM with a higher capacity DIMM.

The HP Compaq d228 and d230 Microtower system boards can be
populated with up to 2GB of memory and support single-channel
mode. The HP Compaq d248 Microtower system board can be
populated with up to 4GB of memory and supports single-channel or
dual-channel mode.

For more information about single-channel or dual-channel memory

✎

modes, see the section “Single Channel and Dual Channel Modes” on

page 8.

Hardware Upgrades

DDR-SDRAM DIMMs

For proper system operation, if the computer supports DDR-SDRAM
DIMMs, the DIMMs must be:

■ industry-standard 184-pin

■ unbuffered PC2100 266 MHz-, PC2700 333 MHz-, or PC3200

400 MHz-compliant

Only the HP Compaq d248 Microtower supports PC3200 400

✎

MHz-compliant DIMMS.

■ 2.5 volt DDR-SDRAM DIMMs.

The DDR-SDRAM DIMMs must also:

■ support CAS latency 2, 2.5, or 3 (CL = 2, CL = 2.5, or CL = 3)

Hardware Reference Guide 1–7

Hardware Upgrades

■ contain the mandatory JEDEC SPD information

In addition, the computer supports:

■ 128Mbit, 256Mbit, and 512Mbit 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

Maximum operating speed is determined by a combination of the
CPU and type of memory used. Refer to the table below for the
optimum combination.

Maximum Front Side Bus Operating Speed (MHz)

CPU Front Side Bus

(MHz)

400 266 266 266

533 266 333 333

800 (d248 only) 266 320 400

DDR266

DIMM

The system will not start if you install unsupported DIMMs.

✎

Single Channel and Dual Channel Modes

HP Compaq d228 and d230 Microtower models operate in single
channel mode. HP Compaq d248 Microtower models will
automatically operate in single channel mode or a higher-performing
dual channel mode, depending on how the DIMMs are installed.

■ In single channel mode, the maximum operational speed is

determined by the slowest DIMM in the system. For example, if
the system is populated with a DIMM that is 266 MHz and a
second DIMM that is 333 MHz, the system will run at the slower
of the two speeds.

■ In dual channel mode (d248 models only), all DIMMs must be

identically matched. DIMMs in the J23 and J24 sockets must be
identical; DIMMs in the J25 and J28 sockets must also be

DDR333

DIMM

DDR400

DIMM

1–8 Hardware Reference Guide