Hardware Reference Guide - dx2250 Microtower Model HP Compaq Business PC
© Copyright 2006 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.
About This Book This guide provides basic information for upgrading this computer model. 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. NOTE Text set off in this manner provides important supplemental information.
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Table of contents 1 Product Features Standard Configuration Features ......................................................................................................... 1 Serviceability Features ......................................................................................................................... 1 Warnings and Cautions ........................................................................................................................
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1 Product Features Standard Configuration Features Figure 1-1 HP Compaq dx2250 Microtower NOTE 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.
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, rotating fans, hot surfaces, and/or fire: Disconnect the power cord from the wall outlet and allow the internal system components to cool before touching. Do not plug telecommunications or telephone connectors into the network interface controller (NIC) receptacles.
2 Hardware Upgrades Removing the Computer Access Panel and Front Bezel 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power outlet and the computer (1), and disconnect any external devices. CAUTION Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet.
5. To remove the front bezel, pull outward on all three tabs on the left side of the bezel (1) then rotate the bezel off the chassis (2), beginning with the left side then the right side. Figure 2-2 Removing the Front Bezel NOTE To replace the front bezel, insert the three hooks on the right side of the bezel into the rectangular holes on the chassis then rotate the bezel into place so that the catches on the three tabs on the left side of the bezel snap into place on the chassis.
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, then 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.
Removing a 3.5" Drive Bezel Blank If the computer was not shipped with a device in the 3.5" bay, the bay will be covered by a bezel blank. If you install a device in the 3.5" bay, you must first remove the bezel blank. 1. Turn off the computer properly through the operating system, then 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.
Installing Additional Memory The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2SDRAM) dual inline memory modules (DIMMs). DIMMs 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. The sockets are labeled DIMM1 and DIMM2. To achieve the maximum memory support, you can populate the system board with up to 2GB (2 x 1GB) of memory.
Installing DIMMs CAUTION You must disconnect the power cord and wait approximately 30 seconds for the power to drain before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present may cause irreparable damage to the memory modules or system board. If you see an LED light on the system board, voltage is still present.
ENWW 6. 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 (3). 7. Replace the computer access panel. 8. Reconnect the power cord and turn on the computer. The computer should automatically recognize the additional memory the next time you turn on the computer.
Installing an Expansion Card The computer has two standard PCI expansion slots that can accommodate an expansion card up to 17.46 cm (6.875 inches) in length. The computer also has one PCI Express x1 expansion slot and one PCI Express x16 expansion slot. 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power outlet and the computer, and disconnect any external devices. 3.
6. Hold the expansion card just above the expansion socket on the system board then move the card toward the rear of the chassis so that the bottom of the bracket on the card slides into the small slot on the chassis. Press the card straight down into the expansion socket on the system board. Figure 2-7 Installing an Expansion Card NOTE When installing an expansion card, press firmly on the card so that the whole connector seats properly in the expansion card slot. 7.
Replacing or Upgrading a Drive The computer supports up to five drives that may be installed in various configurations. This section describes the procedure for replacing or upgrading the storage drives. A Torx T-15 screwdriver is needed to remove and install the guide screws and retainer screws on a drive. Locating Drive Positions NOTE The drive configuration shown below may be different than your computer model. Figure 2-8 Drive Positions 1 12 1 External 5.
Removing a 5.25" Optical Drive 1. Turn off the computer properly through the operating system, then 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 Computer Access Panel and Front Bezel on page 3. 4. Disconnect the power and data cables from the back of the drive. 5.
Removing a 3.5" Media Card Reader or Diskette Drive The 3.5" external drive bay may be populated with a diskette drive or a media card reader. The removal procedure is the same for both devices. 1. Turn off the computer properly through the operating system, then 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.
Removing a 3.5" Hard Drive CAUTION Make sure to create a Recovery Disc Set through HP Backup and Recovery Manager and back up your personal files on the hard drive to an external storage device before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to load the HP factory-installed files from the Recovery Disc Set. 1. Turn off the computer properly through the operating system, then turn off any external devices. 2.
Installing a Security Lock An optional security lock can be installed on the rear panel of the computer to provide physical computer security. Figure 2-12 Installing a Security Lock NOTE The security lock slot may be in a different location on your computer model.
3 Battery Replacement The battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery. WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury: Do not attempt to recharge the battery.
5. Remove the computer access panel. 6. Locate the battery and battery holder on the system board. NOTE On some computer models, it may be necessary to remove an internal component to gain access to the battery. 7. Depending on the type of battery holder on the system board, complete the following instructions to replace the battery. Type 1 a. Lift the battery out of its holder. Figure 3-1 Removing a Coin Cell Battery (Type 1) b. Slide the replacement battery into position, positive side up.
b. To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up. Push the other edge down until the clamp snaps over the other edge of the battery (2). Figure 3-2 Removing and Replacing a Coin Cell Battery (Type 2) Type 3 a. Pull back on the clip (1) that is holding the battery in place, and remove the battery (2). b. Insert the new battery and position the clip back into place.
9. Plug in the computer and turn on power to the computer. 10. Reset the date and time, your passwords, and any special system setups using Computer Setup. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD. 11. Lock any security devices that were disengaged when the computer access panel was removed.
4 Computer Operating Guidelines, Routine Care and Shipping Preparation Computer Operating Guidelines and Routine Care Follow these guidelines to properly set up and care for the computer and monitor: ENWW ● Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold. ● Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and above the monitor to permit the required airflow.
Optical Drive Precautions Be sure to observe the following guidelines while operating or cleaning the optical drive. Operation ● Do not move the drive during operation. This may cause it to malfunction during reading. ● Avoid exposing the drive to sudden changes in temperature, as condensation may form inside the unit. If the temperature suddenly changes while the drive is on, wait at least one hour before you turn off the power. If you operate the unit immediately, it may malfunction while reading.
5 Electrostatic Discharge A discharge of static electricity from a finger or other conductor may damage system boards or other static-sensitive devices. This type of damage may reduce the life expectancy of the device. Preventing Electrostatic Damage To prevent electrostatic damage, observe the following precautions: ● Avoid hand contact by transporting and storing products in static-safe containers.
