Hardware Reference Guide - dx2420 Microtower Model HP Compaq Business PC
© Copyright 2009 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Microsoft, Windows, and Windows Vista are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or 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.
iv About This Book ENWW
Table of contents 1 Product Features Standard Configuration Features ......................................................................................................... 1 Front Panel Components ..................................................................................................................... 2 Media Card Reader Components ......................................................................................................... 3 Rear Panel Components ................................
Appendix B Battery Replacement Appendix C External Security Devices Installing a Security Lock .................................................................................................................... 45 Cable Lock ......................................................................................................................... 45 Padlock ..............................................................................................................................
1 Product Features Standard Configuration Features The HP Compaq Microtower features may vary depending on the model. For a complete listing of the hardware and software installed in the computer, run the diagnostic utility (included on some computer models only). Instructions for using the utility are provided in the Troubleshooting Guide.
Front Panel Components Drive configuration may vary by model. Figure 1-2 Front Panel Components Table 1-1 Front Panel Components 1 5.25-inch Optical Drives1 6 Hard Drive Activity Light 2 Optical Drive Activity Lights 7 Optical Drive Eject Buttons 3 3.5-inch Media Card Reader (optional)2 8 Headphone Connector 4 Microphone Connector 9 USB (Universal Serial Bus) 2.0 Ports 5 Dual-State Power Button 1 Some models have bezel blanks covering one or both of the 5.25-inch drive bays.
Media Card Reader Components The media card reader is an optional device available on some models only. Refer to the following illustration and table to identify the media card reader components. Figure 1-3 Media Card Reader Components Table 1-2 Media Card Reader Components No.
Rear Panel Components Figure 1-4 Rear Panel Components Table 1-3 Rear Panel Components 1 Power Cord Connector 6 Line-Out Connector for powered audio devices (green) 2 Voltage Select Switch 7 Microphone Connector 3 Line-In Audio Connector (blue) 8 Universal Serial Bus (USB) 4 RJ-45 Network Connector 9 VGA Monitor Connector (blue) 5 PS/2 Mouse Connector (green) 10 PS/2 Keyboard Connector (purple) NOTE: Arrangement and number of connectors may vary by model.
Keyboard Figure 1-5 Keyboard Components Table 1-4 Keyboard Components 1 ENWW 1 Function Keys Perform special functions depending on the software application being used. 2 Editing Keys Includes the following: Insert, Home, Page Up, Delete, End, and Page Down. 3 Status Lights Indicate the status of the computer and keyboard settings (Num Lock, Caps Lock, and Scroll Lock). 4 Numeric Keys Work like a calculator keypad. 5 Arrow Keys Used to navigate through a document or Web site.
Using the Windows Logo Key Use the Windows Logo key in combination with other keys to perform certain functions available in the Windows operating system. Refer to the Keyboard on page 5 section to identify the Windows Logo key. Table 1-5 Windows Logo Key Functions The following Windows Logo Key functions are available in Microsoft Windows XP and Microsoft Windows Vista.
Serial Number Location Each computer has a unique serial number and product ID number that are located on the top cover of the computer. Keep these numbers available for use when contacting customer service for assistance.
2 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, hot surfaces, 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.
Removing the Computer Access Panel 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as diskettes or compact discs, from the computer. 3. Turn off the computer properly through the operating system, then turn off any external devices. 4. Disconnect the power cord from the power outlet and disconnect any external devices.
Replacing the Computer Access Panel Place the access panel on the chassis with about 1.3 cm (1/2 inch) of the panel hanging off the back of the chassis and slide it into place (1). Ensure that the hole for the screw is aligned with the hole in the chassis and tighten the screw (2).
Removing the Front Bezel 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as diskettes or compact discs, from the computer. 3. Turn off the computer properly through the operating system, then turn off any external devices. 4. Disconnect the power cord from the power outlet and disconnect any external devices.
Removing Bezel Blanks On some models, there are bezel blanks covering the 3.5-inch and 5.25-inch external drive bays that need to be removed before installing a drive. 1. Remove the front bezel. 2. To remove the lower 5.25-inch bezel blank, gently twist and pull on the bezel blank until it breaks free from the front bezel (1), then discard the bezel blank. If the blank needs to be replaced at a later date, you can order a replacement blank from HP. 3. To remove the 3.
Replacing the Front Bezel Insert the three hooks on the left side of the bezel into the slots on the chassis (1) and rotate the bezel on from left to right (2) so that it snaps in place.
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. To achieve the maximum memory support, you can populate the system board with up to 4GB of memory configured in a highperforming dual channel mode.
Populating DIMM Sockets There are two DIMM sockets on the system board, with one socket per channel. The sockets are labeled DIMM1 and DIMM2. Socket DIMM1 operates in memory channel A. Socket DIMM2 operates in memory channel B. Figure 2-6 DIMM Socket Locations Table 2-1 DIMM Socket Locations Item Description Socket Color 1 DIMM1 socket, Channel A (populate first) Blue 2 DIMM2 socket, Channel B Blue NOTE: A DIMM must occupy the DIMM1 socket.
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.
7. Open both latches of the memory module socket (1), and insert the memory module into the socket (2). Figure 2-7 Installing a DIMM NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket. In order to create a dual-channel memory configuration, the memory capacity of Channel A must equal the memory capacity of Channel B. Refer to Populating DIMM Sockets on page 15 for more information. 8.
Removing or Installing an Expansion Card The computer has one standard PCI expansion slot that can accommodate an expansion card up to 17.46 cm (6.875 inches) in length. The computer also has two PCI Express x1 expansion slots and one PCI Express x16 expansion slot.
5. Remove the computer access panel. 6. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis. 7. On the rear of the computer, a slot cover lock secures the expansion card brackets in place. Remove the screw from the slot cover lock then slide the slot cover lock up to remove it from the chassis. Figure 2-9 Opening the Slot Cover Lock 8.
NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to the expansion card. a. If you are installing an expansion card in a vacant socket, you must use a flatblade screwdriver to pry out the metal shield on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield for the expansion card you are installing. Figure 2-10 Removing an Expansion Slot Cover b.
c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card and carefully rock the card back and forth until the connectors pull free from the socket. Be sure not to scrape the card against the other components. Figure 2-12 Removing a PCI Express x16 Expansion Card 9. Store the removed card in anti-static packaging. 10. If you are not installing a new expansion card, install an expansion slot cover to close the open slot.
11. To install a new expansion card, hold the 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 2-13 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. 12.
15. Reconnect the power cord and any external devices, then turn on the computer. 16. Lock any security devices that were disengaged when the access panel was removed. 17. Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup. Drive Positions Figure 2-15 Drive Positions 1 Two 5.25-inch external drive bays for optional drives (optical drives shown) 2 One 3.
Installing Additional Drives When installing additional drives, follow these guidelines: ● The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary SATA connector on the system board labeled SATA1. ● Connect the first SATA optical drive to the white SATA connector on the system board labeled SATA2. ● Always populate the dark blue SATA1 and white SATA2 connectors before the light blue SATA3 and orange SATA4 connectors.
CAUTION: To prevent loss of work and damage to the computer or drive: If you are inserting or removing a drive, shut down the operating system properly, turn off the computer, and unplug the power cord. Do not remove a drive while the computer is on or in standby mode. Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid touching the connector.
System Board Drive Connections Refer to the following illustration and table to identify the system board drive connectors. Figure 2-17 System Board Drive Connections Table 2-3 System Board Drive Connections 26 No.
Removing an Optical Drive CAUTION: All removable media should be taken out of a drive before removing the drive from the computer. To remove an optical drive: 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as diskettes or compact discs, from the computer. 3. Turn off the computer properly through the operating system, then turn off any external devices. 4.
7. Remove the two screws that secure the drive to the drive cage (1), then slide the drive out of the front of the chassis (2).
Installing an Optical Drive into the 5.25-inch Drive Bay To install an optional 5.25-inch optical drive: 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as diskettes or compact discs, from the computer. 3. Turn off the computer properly through the operating system, then turn off any external devices. 4. Disconnect the power cord from the power outlet and disconnect any external devices.
10. If the system configuration includes only one optical drive, connect the SATA data cable to the white system board connector labeled SATA2. If you are adding a second optical drive, connect the SATA data cable to the orange system board connector labeled SATA4. 11. Connect the power cable (1) and data cable (2) to the rear of the optical drive. Figure 2-21 Connecting the Power and Data Cables 12. Replace the front bezel and access panel. 13. Reconnect the power cord and turn on the computer. 14.
6. Disconnect the drive cables, as indicated in the following illustrations: a. If you are removing a diskette drive, disconnect the data cable (1) and power cable (2) from the back of the drive. Figure 2-22 Disconnecting the Diskette Drive Cables b. If you are removing a media card reader, disconnect the USB cable from the system board.
7. Remove the two retainer screws that secure the drive to the bay (1) then slide the drive forward and out of the bay (2). Figure 2-24 Removing a 3.5-inch Device (Media Card Reader Shown) Installing a Drive into the 3.5-inch External Drive Bay The 3.5-inch external drive bay on the front of the computer can be configured with a media card reader or a diskette drive. 1. Remove/disengage any security devices that prohibit opening the computer. 2.
9. Slide the drive in through the front of the chassis (1) until the bezel on the drive is evenly aligned with the computer front bezel and install the two M3 metric retainer screws (2) as shown in the illustration below. NOTE: Extra drive retainer screws are provided on the interior of the front bezel if needed. The M3 metric retainer screws for diskette drives or media card readers are black. Refer to Installing Additional Drives on page 24 for an illustration of the retainer screws location.
Removing an Internal 3.5-inch Hard Drive NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that you can transfer the data to the new hard drive. Also, if you are replacing the primary hard drive, make sure you have created a Recovery Disc Set to restore the operating system, software drivers, and any software applications that were preinstalled on the computer. If you do not have this CD set, select Start > HP Backup and Recovery and create it now. 1.
7. Push down the latch on the side of the hard disk drive cage (1), then slide the hard disk drive cage away from the bottom of the chassis (2) as shown below. Figure 2-27 Releasing the Hard Drive Cage 8. Lift the hard disk drive cage out of the chassis.
9. Disconnect the power cable (1) and data cable (2) from the back of the hard drive. Figure 2-29 Disconnecting the Hard Drive Cables 10. Remove the four screws that secure the hard disk drive to the hard disk drive cage (1), then slide the hard disk drive out of the hard disk drive cage (2).
Installing an Internal 3.5-inch Hard Drive 1. Follow the steps in Removing an Internal 3.5-inch Hard Drive on page 34 to remove the hard drive cage and, if necessary, the existing hard drive. 2. Slide the new drive into the hard disk drive cage (1), aligning the drive with the four screw holes on the cage. Install the four 6-32 standard screws that secure the hard disk drive to the hard disk drive cage (2). Make sure the hard disk drive cables are facing the top of the drive cage.
3. Connect the power cable (1) and data cable (2) to the back of the hard drive. Figure 2-32 Connecting the Hard Drive Cables CAUTION: Never crease or bend a SATA data cable tighter than a 30 mm (1.18 in) radius. A sharp bend can break the internal wires. 4. Place the hard disk drive cage into the chassis (1), then slide it down toward the bottom of the chassis until it locks into place (2).
5. Attach the two screws that secure the hard disk drive cage to the chassis. Figure 2-34 Securing the Hard Drive Cage 6. If installing a new drive, connect the opposite end of the data cable to the appropriate system board connector. NOTE: If your system has only one SATA hard drive, you must connect the hard drive data cable to the dark blue connector labeled SATA1 to avoid any hard drive performance problems.
A Specifications Table A-1 Specifications Desktop Dimensions Height 14.76 in 37.5 cm Width 6.98 in 17.73 cm Depth 16.88 in 42.87 cm Approximate Weight 23.5 lb 10.66 kg Operating 50° to 95°F 10° to 35°C Nonoperating -22° to 140°F -30° to 60°C Operating 10-90% 10-90% Nonoperating (38.
Table A-1 Specifications (continued) Rated Input Current (maximum)1 1 8A @ 100 VAC 4A @ 200 VAC This system utilizes a passive power factor corrected power supply. The power factor correction is present in the 230V operating mode only. This allows the system to pass the CE mark requirements for use in the countries of the European Union. This supply requires the use of an input voltage range select switch.
B 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.
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 B-1 Removing a Coin Cell Battery (Type 1) b. Slide the replacement battery into position, positive side up. The battery holder automatically secures the battery in the proper position. Type 2 a.
b. Insert the new battery and position the clip back into place. Figure B-3 Removing a Coin Cell Battery (Type 3) NOTE: After the battery has been replaced, use the following steps to complete this procedure. 8. Replace the computer access panel. 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. 11.
C External Security Devices NOTE: For information on data security features, refer to the Computer Setup (F10) Utility Guide and the Desktop Management Guide. Installing a Security Lock The security locks displayed below and on the following pages can be used to secure the computer.
Padlock Figure C-2 Installing a Padlock HP Business PC Security Lock 1. Fasten the security cable by looping it around a stationary object.
2. Thread the keyboard and mouse cables through the lock. Figure C-4 Threading the Keyboard and Mouse Cables 3. Screw the lock to the chassis using the screw provided.
4. Insert the plug end of the security cable into the lock (1) and push the button in (2) to engage the lock. Use the key provided to disengage the lock.
D 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.
E 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: 50 ● 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.
Index A access panel locking and unlocking removing 9 replacing 10 audio connectors 2, 4 B battery replacement 45 42 C computer operating guidelines 50 connecting drive cables 24 D DIMMs.
PCI card 20 PCI Express card 21 S security cable lock 45 HP Business PC Security Lock 46 padlock 46 serial number location 7 shipping preparation 51 specifications computer 40 memory 14 system board drive connections 26 U unlocking access panel USB ports front panel 2 rear panel 4 45 V ventilation guidelines 50 VGA monitor connector 4 W Windows Logo key 6 ENWW Index 53
