Compaq dc7900 Hardware Reference Guide - dc7900 Series Convertible Minitower
Compaq dc7900 - Convertible Minitower PC Manual
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- Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 1
Hardware Reference Guide - dc7900 Series Convertible Minitower HP Compaq Business PC - Compaq 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 - Compaq 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 harm or loss of life. CAUTION: Text - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 4
iv About This Book ENWW - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 5
Drives ...31 System Board Drive Connections 33 Installing a 5.25-inch or 3.5-inch Drive into an External Drive Bay 34 Installing a 3.5-inch SATA Hard Drive into an Internal Drive Bay 36 Removing and Replacing a Removable 3.5-inch SATA Hard Drive 38 Changing from a Minitower to a Desktop - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 7
(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 a Desktop Configuration on page 43 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 8
-State Power Button 11 Power On Light 5 Hard Drive Activity 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 half - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 10
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's control panel. The monitor connectors on the system board are inactive when a graphics card is installed in the computer. If a graphics - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 11
. 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 - Compaq 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 + Ctrl + f Launches Find Computer Windows Logo Key + F1 Launches Windows Help Windows Logo Key + l Locks the computer if you are connected to a - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 13
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 Location 7 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 14
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. Disconnect power to the equipment before removing the enclosure. Replace and secure the - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 15
to access the internal computer components in any of the following circumstances: ● Power outage ● Startup failure ● PC component (for example, processor or power supply) failure ● Forgotten password NOTE: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order this - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 16
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 the lock in place with the tamper-proof screws. 10 Chapter 2 Hardware Upgrades - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 17
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. Lay the computer down on its large base for greater stability. 6. Lift up on the access panel handle (1), slide the access - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 19
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. Push up on the two release tabs (1), then rotate the front bezel away from the chassis to - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 20
(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 Front Bezel 14 Chapter 2 Hardware Upgrades ENWW - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 21
outlet. You must disconnect the power cord to avoid damage to the internal components of the computer. 5. Remove the computer access panel. 6. Remove the . Figure 2-6 Removing Bezel Blanks from the Subpanel (Desktop Shown) NOTE: When replacing the subpanel, ensure that the aligning pins and any - Compaq 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 - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 24
by the slowest DIMM in the system. Installing DIMMs 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 25
any additional modules. 10. Replace the computer access panel. 11. Reconnect the power cord and turn on the computer. 12. Lock any security devices that were disengaged when the computer access panel was removed. The computer should automatically recognize the additional memory the next time you - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 26
x16 slots. For dual graphics card configurations, the first (primary) card must be installed in the PCI Express x16 slot that is NOT downshifted to a x4 slot. To remove, replace, or add an expansion card: 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 27
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 correct vacant expansion socket on the system board and the corresponding expansion slot - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 29
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. open slot. CAUTION: After removing an expansion card, you must replace it with a new card or expansion slot cover for proper cooling - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 30
14. Replace the computer access panel. 15. Reconnect the power cord and turn on the computer. 16. Lock any 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 31
not have a drive in this slot, you may choose to install a 3.5-inch drive (such as a diskette drive, hard drive, or media card reader) later on. To verify the type and size of the storage devices installed in the computer, run Computer Setup. Refer to the Computer Setup (F10) Utility Guide for more - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 32
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. Disconnect the drive cables, as indicated in the following illustrations: CAUTION: When removing the cables, pull - Compaq 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 - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 35
are released so do not tilt the unit and allow the drives to fall 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 - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 37
. The hard drive uses 6-32 isolation mounting guide screws, four of which are installed on the hard drive bracket under the access panel. All other drives use M3 metric screws, eight of which are installed on the diskette drive bracket under the access panel. The HP-supplied metric guide screws are - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 38
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 operating system properly, turn off the computer, and unplug the power cord. Do not remove a drive while the computer is on or - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 39
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 eSATA 6 Media - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 40
HP-supplied metric screws are black. Refer to Installing Additional Drives on page 31 for an illustration of the extra M3 metric guide screws location. If you are replacing a drive, transfer the guides screws from the old drive to the new one. Figure 2-26 Installing a 5.25-Inch Drive in a Minitower - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 41
If the media card reader includes a 1394 port, connect the 1394 cable to the 1394 PCI card. Refer to System Board Drive Connections on page 33 for an illustration of the system board drive connectors. 11. Replace the front bezel and computer access panel. 12. Reconnect the power cord and turn on the - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 42
installed on the hard drive bracket under the access panel. The HP-supplied isolation mounting guide screws are silver and blue. Refer to Installing Additional Drives on page 31 for an illustration of the extra 6-32 isolation mounting guide screws location. If you are replacing a drive, transfer the - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 43
avoid any hard drive performance problems. If you are adding a second hard drive, connect the data cable to the next available (unpopulated) SATA connector on the system board in the following order: SATA0, SATA1, SATA2, SATA3. 10. Replace the computer access panel. 11. Reconnect the power cord and - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 44
the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup. Removing and Replacing a Removable 3.5-inch SATA Hard Drive Some models are equipped with a Removable SATA Hard Drive Enclosure in the 5.25-inch external drive bay. The hard drive is - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 45
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 ENWW Installing Additional - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 46
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 connector on the hard drive is pressed all the way into the connector on the carrier's circuit board. Figure 2-35 Replacing the Hard Drive 40 Chapter - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 47
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 the adhesive strip (2). Figure 2-37 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 48
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 power to be supplied to the hard drive. 42 Chapter 2 Hardware Upgrades ENWW - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 49
tab on the green latch drive bracket for the drive. While lifting the release tab, slide the drive from its drive bay. Repeat this step for each 5.25-inch drive. Figure 2-39 Releasing the 5.25-inch Drives from the Drive Bays (Minitower) ENWW Changing from a Minitower to a Desktop Configuration 43 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 50
for each drive. CAUTION: 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 other device drive into the drive bay may result in damage to the drive. 11. Reconnect all power and data cables to the drives in the 5.25-inch drive - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 51
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 that were disengaged when the - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 52
from the Drive Bays (Desktop) 9. Before you reinstall each drive into the chassis, turn it so that it is in the same orientation as the internal 3.5-inch drive. The bottom of the drive should be parallel to the yellow drivelock. Figure 2-43 Installing a Drive in the Minitower Configuration 10 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 53
11. Reconnect all power and data cables to the drives in the 5.25-inch drive bays. 12. Remove 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 security - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 54
in 45.2 cm Approximate Weight 26.4 lb 12.0 kg Weight Supported (maximum distributed load in desktop position) 77 lb 35 kg Temperature Range Operating 50° to the type and number of options installed. Relative Humidity (noncondensing) Operating 10-90% 10-90% Nonoperating (38.7°C max wet - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 55
Input Current (maximum)1 Standard PS 6A @ 100 VAC 3A @ 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 the European Union. The active - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 56
water. Replace the battery only with the HP spare designated for this product. CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Computer Setup (F10) Utility Guide for - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 57
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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 58
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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 59
Security Devices 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 60
Padlock Figure C-2 Installing a Padlock 54 Appendix C External Security Devices ENWW - Compaq 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 - Compaq 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 - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 63
-sensitive devices. This type of damage may reduce ground cord to a grounded workstation or computer chassis. Wrist straps are flexible straps HP authorized dealer, reseller, or service provider. NOTE: For more information on static electricity, contact an HP authorized dealer, reseller, or service - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 64
same operating guidelines listed above will still apply. ● Keep liquids away from the computer and keyboard. ● Never cover the ventilation slots on the monitor with any type of material. ● Install or enable power management functions of the operating system or other software, including sleep states - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 65
. 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: 1. Back up the hard drive files on PD discs, tape cartridges, CDs, or - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 66
31 expansion card 20 guide screws 31 hard drive 36 media card reader 34 memory 16, 18 optical drive 34 removable hard drive 38 security locks 53 K keyboard components 5 connector 4 L line-in connector 4 line-out connector 4 60 Index locks cable lock 53 HP Business PC Security Lock 55 padlock - Compaq dc7900 | Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 67
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 connections 33 U unlocking access panel USB ports front panel 2 rear
Hardware Reference Guide - dc7900 Series
Convertible Minitower
HP Compaq Business PC