HP Dc7900 Hardware Reference Guide - dc7900 Series Convertible Minitower
HP Dc7900 - Compaq Business Desktop Manual
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- HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 1
Hardware Reference Guide - dc7900 Series Convertible Minitower HP Compaq Business PC - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 2
. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. Hardware Reference Guide HP Compaq Business PC dc7900 Series Convertible Minitower First Edition (July 2008) Document part number: 490843-001 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 3
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 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 4
iv About This Book ENWW - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 5
the Windows Logo Key 6 Serial Number Location ...7 2 Hardware Upgrades Serviceability Features ...8 Warnings and Cautions Front Bezel ...14 Removing Bezel Blanks ...15 Installing Additional Memory ...16 DIMMs ...16 DDR2-SDRAM DIMMs ...16 Populating Minitower to a Desktop Configuration 43 ENWW v - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 6
Changing from a Desktop to a MinitowerConfiguration 45 Appendix A Specifications Appendix B Battery Replacement Appendix C External Security Devices Installing a Security Lock ...53 Cable Lock ...53 Padlock ...54 HP Business PC Security Lock 55 Appendix D Electrostatic Discharge Preventing - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 7
computer, run the diagnostic utility (included on some computer models only). Instructions for using the utility are provided in the Troubleshooting Guide. NOTE: The HP Compaq Convertible Minitower computer can be easily converted to a desktop. For more information, see Changing from a Minitower to - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 8
Light 12 Headphone Connector 6 Microphone Connector 13 USB (Universal Serial Bus) Ports 7 Optical Drive Eject Buttons CAUTION: The bottom 5.25 -inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 9
required) 5 USB ● USB (Universal Serial Bus) Port 6 CompactFlash I/II ● CompactFlash Card Type 1 ● CompactFlash Card Type 2 ● MicroDrive 7 MS PRO/MS PRO DUO ● Memory Stick (MS) ● Memory Stick Select ● Memory Stick PRO ● MagicGate Memory Stick (MG) ● Memory Stick Duo (MS Duo) Duo (MS - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 10
number of connectors may vary by model. An optional second serial port and an optional parallel port are available from HP. The Line-in audio connector can be retasked as a microphone connector in the audio driver , refer to the Computer Setup (F10) Utility Guide. 4 Chapter 1 Product Features ENWW - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 11
Keyboard Figure 1-5 Keyboard Components Table 1-4 Keyboard Components 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 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 12
or hides the Start menu Windows Logo Key + d Displays the Desktop Windows Logo Key + m Minimizes all open applications Shift + Windows Logo Windows Logo Key + any number key Launches the Quick Launch shortcut that is in the position that corresponds to the number (for example, Windows Logo - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 13
Serial Number Location Each computer has a unique serial number and a 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. Figure 1-6 Serial Number and Product ID Location ENWW Serial Number - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 14
service. No tools are needed for most 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 This guide is located on the Web at http://www.hp.com/ - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 15
HP reseller or service provider. Order PN 166527-001 for the wrench-style key or PN 166527-002 for the screwdriver bit key. ● Refer to the HP Web site (http://www.hp.com) for ordering information. ● Call the appropriate number listed in the warranty or in the Support Telephone Numbers guide - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 16
5. Use the Smart Cover FailSafe Key to remove the two tamper-proof screws that secure the Smart Cover Lock to the chassis. Figure 2-1 Removing the Smart Cover Lock Screws You can now remove the access panel. See Removing the Computer Access Panel on page 11. To reattach the Smart Cover Lock, secure - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 17
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. - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 18
Replacing the Computer Access Panel 1. Lay the computer down on its large base for greater stability. 2. Align the tabs on the access panel with the slots on the chassis and push down on the access panel while sliding it forward until it locks into place. Figure 2-3 Replacing the Computer Access - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 19
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. - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 20
Replacing the Front Bezel 1. Place the bottom hinge points on the front bezel in their corresponding slots in the chassis (1). 2. Rotate the front bezel onto the chassis (2). 3. Snap the catches at the top of the bezel into place (3). 4. Snap the release tabs into place (4). Figure 2-5 Replacing the - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 21
the subpanel away at an angle could damage the pins that align it within the front bezel. Figure 2-6 Removing Bezel Blanks from the Subpanel (Desktop Shown) NOTE: When replacing the subpanel, ensure that the aligning pins and any remaining bezel blanks are in their proper orientation. The logo on - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 22
timing) and CAS latency 6 DDR2 800 Mhz (6-6-6 timing) ● contain the mandatory JEDEC SPD information In addition, the computer supports: ● 512-Mbit and 1-Gbit non-ECC memory technologies ● single-sided and double-sided DIMMs ● DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 23
4 DIMM4 socket, Channel B White NOTE: A DIMM must occupy the black DIMM1 socket. Otherwise, the system will display a POST error message indicating that a memory module must be installed in the black socket. The system will automatically operate in single channel mode, dual channel mode, or flex - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 24
of static electricity by briefly touching a grounded metal object. For more information, refer to Appendix D, Electrostatic Discharge on page 57. When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module. 1. Remove/disengage any security devices that - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 25
installed in only one way. Match the notch on the module with the tab on the memory socket. A DIMM must occupy the black DIMM1 socket. For maximum performance, populate the sockets so that the memory capacity is spread as equally as possible between Channel A and Channel B. Refer to Populating DIMM - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 26
Removing or Installing an Expansion Card The computer has three standard full-height PCI expansion slots, one PCI Express x1 expansion slot, one PCI Express x16 expansion slot, and one PCI Express x16 expansion slot that is downshifted to a x4 slot. Figure 2-9 Expansion Slot Locations Table 2-2 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 27
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. You must disconnect the power cord to avoid damage to the internal components of the computer. 5. Remove the computer access panel. 6. Locate the - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 28
back of the chassis. Lift the expansion slot cover from the expansion slot. Figure 2-11 Removing an Expansion Slot Cover b. If you are removing a standard PCI card, hold the card at each end and carefully rock it back and forth until the connectors pull free from the socket. Lift the card - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 29
free from the socket. Lift the card straight up to remove it. Be sure not to scrape the card against other components. Figure 2-13 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 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 30
security devices that were disengaged when the computer access panel was removed. 17. Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup. 24 Chapter 2 Hardware Upgrades ENWW - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 31
Drive Positions Figure 2-15 Desktop and Minitower Drive Positions Table drive bays are available from HP. The bottom 5.25-inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a half-height drive or F10) Utility Guide for more information. ENWW Drive Positions 25 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 32
Removing a Drive from a Drive Bay CAUTION: All removable media should be taken out of a drive before removing the drive from the computer. 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 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 33
● If you are removing a diskette drive, disconnect the data cable (1) and power cable (2) from the back of the drive. Figure 2-17 Disconnecting the Diskette Drive Cables ENWW Removing a Drive from a Drive Bay 27 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 34
are removing a media card reader, disconnect the USB cable from the system board. If the media card reader has a 1394 port, disconnect the 1394 cable from the PCI card. Figure 2-18 Disconnecting the Media Card Reader USB Cable Figure 2-19 Disconnecting the Media Card Reader 1394 Cable 28 Chapter - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 35
out. Figure 2-20 Removing a 5.25-inch Drive in the Desktop Configuration (Optical Drive shown) ● To remove a 3.5-inch drive or a 5.25-inch drive in the minitower configuration, pull up on the green drivelock mechanism (1) for that specific drive and slide the drive from the drive bay (2). Figure - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 36
● To remove a hard drive from and internal 3.5-inch drive bay, pull up on the green hard drive drivelock mechanism (1) for that drive and slide the drive from the drive bay (2). Figure 2-22 Removing a Hard Drive 8. Store the removed drive in anti-static packaging. 30 Chapter 2 Hardware Upgrades - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 37
If the media card reader has a 1394 port, connect the 1394 cable to the 1394 PCI card. ● The system does not support Parallel ATA (PATA) optical drives or lock in place. HP has provided extra guide screws installed on the chassis. The hard drive uses 6-32 isolation mounting guide screws, four of - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 38
Figure 2-24 Extra Optical Drive M3 Guide Screws Location CAUTION: To prevent loss of work and damage to the computer or drive: If you are inserting or removing a drive, shut down the - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 39
System Board Drive Connections Refer to the following illustration and table to identify the system board drive connectors. Figure 2-25 System Board Drive Connections Table 2-4 System Board Drive Connections No. System Board Connector System Board Label 1 SATA0 2 SATA1 3 SATA2 4 SATA3 5 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 40
the drive (1). NOTE: Optical drives, diskette drives, and media card readers use M3 metric guide screws. Eight extra metric guide screws are provided on the diskette drive bracket under the access panel. The HP-supplied metric screws are black. Refer to Installing Additional Drives on page 31 for an - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 41
than the upper two bays. The bottom bay supports a half-height drive or other device that SATA connector following the numbered sequence of the connectors a 1394 port, connect the 1394 cable to the 1394 PCI card. Guide for instructions on using Computer Setup. ENWW Installing Additional Drives 35 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 42
does not support Parallel ATA system, software drivers, and any software applications that were preinstalled Guide Screws NOTE: The hard drive uses 6-32 isolation mounting guide screws. Four extra guide screws are installed on the hard drive bracket under the access panel. The HP-supplied isolation mounting guide - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 43
Drive into the Hard Drive Bay CAUTION: Make sure the guide screws line up with the guide slots in the drive cage. The use of unnecessary force cable to the dark blue connector labeled SATA0 to avoid any hard drive performance problems. If you are adding a second hard drive, connect the data cable - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 44
to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup. Removing and Replacing restore the operating system, software drivers, and any software applications that were preinstalled on the computer. not have this CD set, select Start > HP Backup and Recovery and create it now. 1. - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 45
3. Remove the adhesive strip that secures the thermal sensor to the top of the hard drive (1) and move the thermal sensor away from the carrier (2). Figure 2-32 Removing the Thermal Sensor 4. Remove the four screws from the bottom of the hard drive carrier. Figure 2-33 Removing the Security Screws - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 46
5. Slide the hard drive back to disconnect it from the carrier then lift it up and out of the carrier. Figure 2-34 Removing the Hard Drive 6. Place the new hard drive in the carrier then slide the hard drive back so that it seats in the SATA connector on the carrier's circuit board. Be sure the - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 47
7. Replace the four screws in the bottom of the carrier to hold the drive securely in place. Figure 2-36 Replacing the Security Screws 8. Place the thermal sensor on top of the hard drive in a position that does not cover the label (1) and attach the thermal sensor to the top of the hard drive with - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 48
9. Slide the cover on the carrier (1) and replace the screw on the rear of the carrier to secure the cover in place (2). Figure 2-38 Replacing the Carrier Cover 10. Slide the hard drive carrier into the enclosure on the computer and lock it with the key provided. NOTE: The carrier must be locked for - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 49
Changing from a Minitower to a Desktop Configuration 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as 2-39 Releasing the 5.25-inch Drives from the Drive Bays (Minitower) ENWW Changing from a Minitower to a Desktop Configuration 43 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 50
green latch drive bracket. Figure 2-40 Installing a Drive in the Desktop Configuration 10. Gently slide the drive into the uppermost available bay inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a half-height drive or other device that is no more than 14.5 cm (5.7 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 51
the subpanel (rotate it 90º) with the logo at the bottom, then snap it back into the bezel. Figure 2-41 Changing from a Minitower to a Desktop Configuration 15. Replace the front bezel and computer access panel. 16. Reconnect the power cord and turn on the computer. 17. Lock any security devices - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 52
bay. Figure 2-42 Releasing the 5.25-inch Drives from the Drive Bays (Desktop) 9. Before you reinstall each drive into the chassis, turn it so that inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a half-height drive or other device that is no more than 14.5 cm - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 53
. 14. Reposition the subpanel (rotate it 90º) with the logo at the bottom, then snap it back into the bezel. Figure 2-44 Changing from a Desktop to a Minitower Configuration 15. Replace the front bezel and computer access panel. 16. Reconnect the power cord and turn on the computer. 17. Lock any - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 54
Specifications Table A-1 Specifications Desktop Dimensions Height 7.0 in 17.8 cm Width 17.63 in 44.8 cm Depth 17.8 in 45.2 cm Tower Dimensions Height 17.63 in 44.8 cm Width 7.0 in 17.8 cm Depth 17.8 in 45.2 cm Approximate Weight 26.4 lb 12.0 kg Weight Supported and number of - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 55
Table A-1 Specifications (continued) Power Supply 115V 230V Operating Voltage Range1 @ 200 VAC 85% Efficient PS 5A @ 100VAC 2.5A @ 200VAC 1 This system utilizes an active power factor corrected power supply. This allows the system to pass the CE mark requirements for use in the countries of - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 56
, or dispose of in fire or water. Replace the battery only with the HP spare designated for this product. CAUTION: Before replacing the battery, it is important will be cleared. Refer to the Computer Setup (F10) Utility Guide for information on backing up the CMOS settings. Static electricity can - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 57
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 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 58
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. Lock any security devices that were disengaged when the computer access panel was removed. 52 Appendix B Battery Replacement ENWW - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 59
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. Installing a Security Lock The security locks displayed below and on the following page - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 60
Padlock Figure C-2 Installing a Padlock 54 Appendix C External Security Devices ENWW - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 61
HP Business PC Security Lock 1. Fasten the security cable by looping it around a stationary object. Figure C-3 Securing the Cable to a Fixed Object 2. Thread the keyboard and mouse cables through the lock. Figure C-4 Threading the Keyboard and Mouse Cables ENWW Installing a Security Lock 55 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 62
3. Screw the lock to the chassis using the screw provided. Figure C-5 Attaching the Lock to the Chassis 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. Figure C-6 Engaging the Lock 56 Appendix - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 63
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. ENWW Preventing Electrostatic Damage 57 - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 64
the computer by blocking any vents or air intakes. Do not place the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow. ● Never operate the computer with the access panel or any of the expansion card slot covers removed. ● Do not - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 65
exposing the drive to sudden changes in temperature, as condensation may form inside the unit. If the temperature suddenly changes while the drive is unplug the computer and have it checked by an authorized HP service provider. Shipping Preparation Follow these suggestions when preparing to ship - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 66
D desktop conversion 43 DIMMs. See memory diskette 14 front panel components 2 G guide screws 31 H hard drive installing HP Business PC Security Lock 55 padlock 54 Smart Cover Lock 9 M media card reader features 3 installing 34 removing 26 memory installing 16, 18 populating sockets 17 specifications - HP Dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 67
card reader 26 PCI card 22 PCI Express card 23 Smart Cover Lock 9 S security cable lock 53 HP Business PC Security Lock 55 padlock 54 Smart Cover Lock 9 serial connector 4 serial number location 7 shipping preparation 59 Smart Cover Lock 9 specifications computer 48 memory 16 system board drive
Hardware Reference Guide - dc7900 Series
Convertible Minitower
HP Compaq Business PC