HP dc7900 series Hardware Reference Manual
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HP dc7900 series Hardware Reference Manual

Business pc ultra-slim desktop
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Hardware Reference Guide - dc7900 Series
Ultra-Slim Desktop
HP Compaq Business PC

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  • Page 1 Hardware Reference Guide - dc7900 Series Ultra-Slim Desktop HP Compaq Business PC...
  • Page 2 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.

  • Page 3: About This Book

    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.
  • Page 4 About This Book ENWW...

  • Page 5: Table Of Contents

    Table of contents 1 Product Features Standard Configuration Features ......................1 Front Panel Components ........................2 Rear Panel Components ........................3 Keyboard .............................. 4 Using the Windows Logo Key ....................5 Serial Number Location ........................6 2 Hardware Upgrades Serviceability Features ......................... 7 Warnings and Cautions ........................
  • Page 6 Appendix C Security Lock Provisions Installing a Security Lock ........................34 Cable Lock ......................... 34 Padlock ..........................35 HP Business PC Security Lock ..................36 Appendix D Electrostatic Discharge Preventing Electrostatic Damage ....................... 38 Grounding Methods ..........................38 Appendix E Computer Operating Guidelines, Routine Care and Shipping Preparation Computer Operating Guidelines and RoutineCare ................

  • Page 7: Product Features

    Product Features Standard Configuration Features The HP Compaq Ultra-Slim Desktop computer comes with features that 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.

  • Page 8: Front Panel Components

    Front Panel Components Drive configuration may vary by model. Figure 1-2 Front Panel Components Table 1-1 Front Panel Components Optical Drive System Power LED Headphone Connector Hard Drive Activity Light Microphone Connector USB (Universal Serial Bus) Ports Dual-State Power Button Chapter 1 Product Features ENWW...

  • Page 9: Rear Panel Components

    Rear Panel Components Figure 1-3 Rear Panel Components Table 1-2 Rear Panel Components Power Cord Connector VGA Monitor Connector (blue) DisplayPort Monitor Connector PS/2 Mouse Connector (green) PS/2 Keyboard Connector (purple) RJ-45 Network Connector Universal Serial Bus (USB) (6) Line-In Audio Connector (blue) Line-Out Connector for powered audio devices (green) NOTE:...

  • Page 10: Keyboard

    Keyboard Figure 1-4 Keyboard Components Table 1-3 Keyboard Components Function Keys Perform special functions depending on the software application being used. Editing Keys Include the following: Insert, Home, Page Up, Delete, End, and Page Down. Status Lights Indicate the status of the computer and keyboard settings (Num Lock, Caps Lock, and Scroll Lock).

  • Page 11: Using The Windows Logo Key

    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 Keyboard on page 4 to identify the Windows Logo key. Table 1-4 Windows Logo Key Functions The following Windows Logo Key functions are available in Microsoft Windows XP and Microsoft Windows Vista.

  • Page 12: Serial Number Location

    Serial Number Location Each computer has a unique serial number and a product ID that are located on the top of the computer when it is in the tower configuration. Keep these numbers available for use when contacting customer service for assistance. Figure 1-5 Serial Number and Product ID Location Chapter 1 Product Features...

  • Page 13: Hardware Upgrades

    To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation, setup, posture, and health and work habits for computer users, and provides important electrical and mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo. WARNING! Energized and moving parts inside.

  • Page 14: Connecting The Power Cord

    Connecting the Power Cord When connecting the power supply, it is important to follow the steps below to ensure the power cord does not pull free from the computer. Connect the power cord to the power supply connector on the rear of the computer (1). Insert the power cord retainer clip into a slot on the air vent to prevent the cord from becoming disconnected from the computer (2).

  • Page 15: Removing The Computer Access Panel

    Removing the Computer Access Panel To access internal components, you must remove the access panel: Remove/disengage any security devices that prohibit opening the computer. Remove all removable media, such as a compact disc, from the computer. Turn off the computer properly through the operating system, then turn off any external devices. Disconnect the power cord from the power outlet and disconnect any external devices.

  • Page 16: Replacing The Computer Access Panel

    Replacing the Computer Access Panel Align the tabs on the panel with the slots on the chassis then slide the panel towards the rear of the chassis until it stops (1). Tighten the thumbscrew to secure the access panel (2). Figure 2-3 Replacing the Computer Access Panel Chapter 2 Hardware Upgrades...

  • Page 17: Removing And Replacing The Front Bezel

    Removing and Replacing the Front Bezel Remove/disengage any security devices that prohibit opening the computer. Remove all removable media, such as a compact disc, from the computer. Turn off the computer properly through the operating system, then turn off any external devices. Disconnect the power cord from the power outlet and disconnect any external devices.
  • Page 18 Press the two release tabs on the inside of the bezel towards the right side of the computer (1) and rotate the bezel off from right to left (2). Figure 2-5 Removing the Front Bezel Replace the fan shroud. To replace the front bezel: Slide the hooks on the left side of the bezel into the slots on the chassis (1) then press the right side of the bezel onto the chassis so that the latches snap in place (2).

  • Page 19: Removing A Bezel Blank

    Reconnect the power cord and turn on the computer. Lock any security devices that were disengaged when the access panel was removed. Removing a Bezel Blank On some models, there is a bezel blank covering the external drive bay that needs to be removed before installing a drive.

  • Page 20: Changing From Desktop To Tower Configuration

    On the back side of the logo plate, press down on the “step” to remove the logo plate from the bezel (1). Rotate the plate 90 degrees (2) then press the logo plate back into the bezel. Figure 2-8 Rotating the HP Logo Plate Replace the front bezel. Replace the access panel. Chapter 2 Hardware Upgrades...
  • Page 21 To change from the tower configuration to the desktop configuration, reverse the previous steps. NOTE: An optional Quick Release mounting bracket is available from HP for mounting the computer to a wall, desk, or swing arm. ENWW Changing from Desktop to Tower Configuration...

  • Page 22: Installing Additional Memory

    Installing Additional Memory The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2- SDRAM) small outline dual inline memory modules (SODIMMs). SODIMMs The memory sockets on the system board can be populated with up to two industry-standard SODIMMs. These memory sockets are populated with at least one preinstalled SODIMM.

  • Page 23: Populating Sodimm Sockets

    Populating SODIMM Sockets There are two SODIMM sockets on the system board, with one socket per channel. The sockets are labeled DIMM1 and DIMM3. The DIMM1 socket operates in memory channel A. The DIMM3 socket operates in memory channel B. Figure 2-10 SODIMM Socket Locations Table 2-1...

  • Page 24: Installing Sodimms

    Installing SODIMMs CAUTION: You must disconnect the power cord 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.
  • Page 25 If you are adding a second SODIMM, remove the SODIMM from the top DIMM1 socket to access the bottom DIMM3 socket. Press outward on the two latches on each side of the SODIMM (1) then pull the SODIMM out of the socket (2). Figure 2-11 Removing a SODIMM Slide the new SODIMM into the socket at approximately a 30°...

  • Page 26: Replacing The Optical Drive

    If the computer was on a stand, replace the stand. Reconnect the power cord and turn on the computer. Lock any security devices that were disengaged when the computer cover or access panel was removed. The computer automatically recognizes the additional memory when you turn on the computer. Replacing the Optical Drive The Ultra-Slim Desktop uses a slimline Serial ATA (SATA) optical drive.

  • Page 27: Preparing The New Optical Drive

    Preparing the New Optical Drive Before the new optical drive can be used, the release latch must be attached. Peel the backing off the adhesive on the release latch. Without allowing the release latch to touch the optical drive, carefully align the holes on the release latch with the pins on the side of the optical drive.

  • Page 28: Installing The New Optical Drive

    Installing the New Optical Drive NOTE: If you are installing an optical drive in a bay that did not previously have a drive in it, you must remove the access panel and the bezel blank covering the opening of the bay before proceeding. Follow the procedures in Removing the Computer Access Panel on page 9 Removing a Bezel Blank...

  • Page 29: Replacing The Hard Drive

    If you do not have this CD set, select Start > HP Backup and Recovery and create it now. The 2.5-inch hard drive is enclosed in a carrier under the optical drive.
  • Page 30 Lift the hard drive carrier straight up and out of the chassis. Figure 2-17 Removing the Hard Drive Carrier To remove the hard drive from the carrier, remove the guide screw from the front left side of the carrier. Figure 2-18 Removing the Hard Drive Guide Screw Chapter 2 Hardware Upgrades ENWW...
  • Page 31 Slide the carrier back and remove the hard drive. Figure 2-19 Removing the Hard Drive Transfer the three remaining guide screws (two on the right and one on the rear left) from the old drive to the new drive. Figure 2-20 Transferring the Guide Screws ENWW Replacing the Hard Drive...
  • Page 32 Align the guide screws with the slots on the carrier and slide the new hard drive into the carrier (1), then replace the guide screw on the front left of the carrier to secure the drive in the carrier (2). Figure 2-21 Installing the Hard Drive in the Carrier To place the hard drive carrier back in the chassis, align the guide screws with the slots on the...

  • Page 33: Installing And Removing A Port Cover

    NOTE: No configuration of the SATA hard drive is necessary; the computer automatically recognizes it the next time you turn on the computer. After replacing the hard drive, use the Recovery Disc Set that you created when you initially set up the computer to restore the operating system, software drivers, and any software applications that were preinstalled on the computer.
  • Page 34 Figure 2-24 Removing a Port Cover Chapter 2 Hardware Upgrades ENWW...

  • Page 35: Appendix A Specifications

    Specifications Table A-1 Specifications Desktop Dimensions (in the desktop position) 2.60 in 6.6 cm Height 9.90 in 25.1 cm Width 10.00 in 25.4 cm Depth (depth will increase if the computer is equipped with a port security bracket) Approximate Weight 6.95 lb 3.15 kg Weight Supported (maximum distributed load in desktop position)
  • Page 36 Table A-1 Specifications (continued) Rated Input Current (maximum) 2.2A @ 100VAC 1.1A @ 200VAC This system utilizes an active power factor corrected external power supply. This allows the system to pass the CE mark requirements for use in the countries of the European Union. The active power factor corrected power supply also has the added benefit of not requiring an input voltage range select switch.

  • Page 37: Battery Replacement

    The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power. HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to http://www.hp.com/...
  • Page 38 NOTE: On some computer models, it may be necessary to remove an internal component to gain access to the battery. Depending on the type of battery holder on the system board, complete the following instructions to replace the battery. Type 1 Lift the battery out of its holder.
  • Page 39 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. Replace the access panel. If the computer was on a stand, replace the stand. Reconnect the power cord and turn on the computer.

  • Page 40: Appendix C Security Lock Provisions

    NOTE: For information on data security features, refer to the Computer Setup (F10) Utility Guide, the Desktop Management Guide, and the HP ProtectTools Security Manager Guide (some models) at http://www.hp.com. The security locks displayed below and on the following pages can be used to secure the computer.

  • Page 41: Padlock

    Figure C-2 Installing a Cable with a Port Cover Installed Padlock Figure C-3 Installing a Padlock ENWW Installing a Security Lock...

  • Page 42: Hp Business Pc Security Lock

    HP Business PC Security Lock Fasten the security cable by looping it around a stationary object. Figure C-4 Securing the Cable to a Fixed Object Thread the keyboard and mouse cables through the lock. Figure C-5 Threading the Keyboard and Mouse Cables...
  • Page 43 Screw the lock to the chassis using the screw provided. Figure C-6 Attaching the Lock to the Chassis 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. Figure C-7 Engaging the Lock ENWW...

  • Page 44: Appendix D Electrostatic Discharge

    Use conductive field service tools. ● Use a portable field service kit with a folding static-dissipating work mat. If you do not have any of the suggested equipment for proper grounding, contact an HP authorized dealer, reseller, or service provider. NOTE: For more information on static electricity, contact an HP authorized dealer, reseller, or service provider.

  • Page 45: Appendix E Computer Operating Guidelines, Routine Care And Shipping Preparation

    Computer Operating Guidelines, Routine Care and Shipping Preparation Computer Operating Guidelines and RoutineCare Follow these guidelines to properly set up and care for the computer and monitor: ● Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold. ●...

  • Page 46: Optical Drive Precautions

    Avoid using any type of solvent, such as alcohol or benzene, which may damage the finish. Safety If any object or liquid falls into the drive, immediately unplug the computer and have it checked by an authorized HP service provider. Shipping Preparation Follow these suggestions when preparing to ship the computer: Back up the hard drive files on PD discs, tape cartridges, CDs, or diskettes.

  • Page 47: Index

    3 electrostatic discharge, preventing line-out connector 3 battery replacement 31 damage 38 locks bezel, removing 11 cable lock 34 HP Business PC Security front bezel Lock 36 cable lock 34 removing and replacing 11 padlock 35 components removing blanks 13...
  • Page 48 23 optical drive 20 port cover 27 RJ-45 connector 3 screws transferring to hard drive 25 security cable lock 34 HP Business PC Security Lock 36 padlock 35 serial number location 6 shipping preparation 40 SODIMMs installing 16 specifications 16...

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