HP Compaq dx2450 Specifications

Service Reference GuideHP Compaq dx2450 Business PC

●Boot●ExitUse the arrow keys to select the appropriate heading, then press Enter. Use the arrow (up anddown) keys to select the option you want, then

L3L4L5P1USB rear port choke (2nd)USB rear port choke (3rd)USB front port choke (2nd)P/S connector (20 or 24 pin)P2P3P4P5P6Second P/S connector (as req

P54P55P58P60P61Primary serial portDouble stack serial port, Top = Serial B, Bottom = Serial ARiser edge connector (male-mates with J30)PrimarySerial A

U4U5South bridgeSuper I/OU6U7U10U11U12Clock chip64 bit BridgeLOM1LOM1 EEPROMLOM1 PHYU13U14U16U17U18Audio CodecAudio amplifierLOM2LOM2 EEPROMLOM2 PHYU1

Y4Y5/H5Secondary NIC clock crystalRTC clock crystal/tie-down97

E SpecificationsTable E-1 SpecificationsDesktop DimensionsHeightWidthDepth16.37 in7.24 in14.95 in41.58 cm18.40 cm37.98 cmApproximate Weight 20.26 lb

Rated Input Current (maximum)18A @ 100 VAC 4A @ 200 VAC1This system utilizes a passive power factor corrected power supply. The power factor correctio

IndexSymbols/Numerics24-pin MicroFit power pinassignments 7624-pin power pin assignments 754-pin power pin assignments 766-pin power pin assignments 7

Mmedia card readerinstalling 50removing 48memoryremoval and replacement 36microphone pin assignments 72monitorpin assignments 73mousecleaning 23pin as

●Memory Bank 4●BIOS Revision●Core Version●Model Number●Product Number●Asset Tag (press Enter to change)Computer Setup—AdvancedNOTE: Support for specif

Onboard LAN BootROMAllows you to disable/enable the boot ROM of the onboard LAN chip.SATA Controller Allows you to set:●Disabled●SATA1●SATA1+2Onboard

Computer Setup—BootNOTE: Support for specific Computer Setup options may vary depending on the hardwareconfiguration.Table 2-4 Computer Setup—BootOpt

Recovering the Configuration SettingsTo reset all BIOS Setup options to their default values (including options for ctrl+F10), you must enterF10 Setup

3 Computer Diagnostic FeaturesHP Insight DiagnosticsNOTE: HP Insight Diagnostics is included on CD with some computer models only.The HP Insight Diagn

6. Shut down the operating system and turn off the computer.7. Turn on the computer. The system will boot to the CD.NOTE: If the system does not boot

Test TabThe Test tab allows you to choose various parts of the system to test. You can also choose the type oftest and testing mode.There are three ty

After testing has completed, the Cancel Testing button is replaced with a Retest button. The Retestbutton will retest the last set of tests executed.

Saving and Printing Information in HP Insight DiagnosticsYou can save the information displayed in the HP Insight Diagnostics Survey and Log tabs to a

© Copyright 2008 Hewlett-PackardDevelopment Company, L.P. Theinformation contained herein is subject tochange without notice.Microsoft and Windows are

HP Backup and Recovery ManagerThe HP Backup and Recovery Manager is an easy-to-use, versatile application that allows you to backup and recover the pr

4 Serial and Parallel ATA Drive Guidelinesand FeaturesNOTE: Serial ATA = SATAParallel ATA = PATASATA Hard DrivesSerial ATA Hard Drive Characteristics

SATA Hard Drive CablesSATA Data CableAlways use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5Gb/s drives.Cu

PATA Device InformationThe USDT model is the only product that supports a PATA optical drive. No PATA drives are supportedon any other model.ATA SMART

5 Identifying the Chassis, Routine Care,and Disassembly PreparationThis chapter provides general service information for the computer. Adherence to th

Electrostatic Discharge InformationA sudden discharge of static electricity from your finger or other conductor can destroy static-sensitivedevices or

●Avoid contact with pins, leads, or circuitry.●Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductivefoam.

●Conductive foam●Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance●Static-dissipative table or floor mats with hard t

Routine CareGeneral Cleaning Safety Precautions1. Never use solvents or flammable solutions to clean the computer.2. Never immerse any parts in water

●If you remove a key, use a specially designed key puller to prevent damage to the keys. This toolis available through many electronic supply outlets.

Table of contents1 Installing and Customizing the SoftwareInstalling the Operating System ...

●Diagnostics software●HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-resistant bits (Smart Cover FailSafe Key,

Lithium Coin Cell BatteryThe battery that comes with the computer provides power to the real-time clock and has a minimumlifetime of about three years

6 Removal and Replacement ProceduresMicrotower (MT) ChassisAdherence to the procedures and precautions described in this chapter is essential for prop

Preparation for DisassemblySee Identifying the Chassis, Routine Care, and Disassembly Preparation on page 18 for initial safetyprocedures.1. Remove/di

External Security DevicesThe following security devices are used to prevent unauthorized access to the internal components ofthe computer and/or secur

HP Business PC Security Lock1. Fasten the security cable by looping it around a stationary object.2. Thread the keyboard and mouse cables through the

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

Computer Access Panel1. Prepare the computer for disassembly (Preparation for Disassembly on page 27).CAUTION: Before removing the computer access pan

Front Bezel1. Prepare the computer for disassembly (Preparation for Disassembly on page 27).2. Remove the computer access panel (Computer Access Panel

Removing Bezel BlanksOn some models, there are bezel blanks covering the 3.5-inch and 5.25-inch external drive bays thatneed to be removed before inst

Chassis Designation ... 18Micr

Cable ManagementAlways follow good cable management practices when working inside the computer.●Keep cables away from major heat sources like the heat

Cable ConnectionsSystem board connectors are color-coded to make it easier to find the proper connection.System Board ConnectionsSystem Board Connecto

MemoryThe computer comes with double data rate 2 synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules (DIMMs).The memory s

Item Description Socket Color1 DIMM socket XMM1, Channel A(populate first)Black2 DIMM socket XMM2, Channel B(populate second)Black3 DIMM socket XMM3,

CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, itis important to use memory modules with gold metal contacts

Expansion CardsThe computer has one standard PCI expansion slot that can accommodate an expansion card up to17.46 cm (6.875 inches) in length. The com

4. 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 th

b. If you are removing a standard PCI card, hold the card at each end and carefully rock it backand forth until the connectors pull free from the sock

8. To install a new expansion card, hold the card just above the expansion socket on the systemboard then move the card toward the rear of the chassis

DrivesWhen installing additional drives, follow these guidelines:●The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary

Speaker ...

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

No. System Board Connector System Board Label Color5 SATA3 SATA3 orange6 Diskette Drive FLOPPY blackTo verify the type, size, and capacity of the stor

Removing an Optical DriveCAUTION: All removable media should be taken out of a drive before removing the drive from thecomputer.To remove an optical d

Installing an Optical Drive into the 5.25-inch Drive BayTo install an optional 5.25-inch optical drive:1. Prepare the computer for disassembly (Prepar

9. Connect the power cable (1) and data cable (2) to the rear of the optical drive.10. Replace the front bezel and access panel.11. Lock any security

4. Disconnect the drive cables, as indicated in the following illustrations:a. If you are removing a diskette drive, disconnect the data cable (1) and

5. Remove the retainer screws that secure the drive to the bay (1) then slide the drive forward andout of the bay (2).Installing a Drive into the 3.5-

7. Slide the drive in through the front of the chassis (1) until the bezel on the drive is evenly alignedwith the computer front bezel and install the

Removing an Internal 3.5-inch Hard DriveNOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive sothat you can

5. Lift the hard disk drive cage out of the chassis.6. Disconnect the power cable (1) and data cable (2) from the back of the hard drive.Drives 53

Appendix D System Board and Riser Board Reference Designators...

7. Remove the four screws that secure the hard disk drive to the hard disk drive cage (1), then slidethe hard disk drive out of the hard disk drive ca

2. Slide the new drive into the hard disk drive cage (1), aligning the drive with the four screw holeson the cage. Install the four 6-32 standard scre

4. Place the hard disk drive cage into the chassis (1), then slide it down toward the bottom of thechassis until it locks into place (2).5. Attach the

NOTE: If you are replacing the primary hard drive, use the Recovery Disc Set to restore the operatingsystem, software drivers, and any software applic

Power Switch/LED Assembly1. Prepare the computer for disassembly (Preparation for Disassembly on page 27).2. Remove the computer access panel (Compute

HeatsinkYou will need a screwdriver with a narrow shaft to loosen the heatsink screws.1. Prepare the computer for disassembly (Preparation for Disasse

To remove the backplate from the system board:1. Remove the four silver Phillips screws that secure the backplate to the system board.2. Remove the ba

Processor1. Prepare the computer for disassembly (Preparation for Disassembly on page 27).2. Remove the computer access panel (Computer Access Panel o

5. If using a new heatsink, remove the protective covering from the bottom of the heatsink and placeit in position atop the processor.6. Secure the he

When replacing the speaker, be sure to route the wire behind the hard drive cage bracket, through themetal clamp on the chassis, through the metal cla

1 Installing and Customizing the SoftwareNOTE: If the computer was shipped with Windows Vista loaded, you will be prompted to register thecomputer wit

Power Supply1. Prepare the computer for disassembly (Preparation for Disassembly on page 27).2. Remove the computer access panel (Computer Access Pane

To install the power supply, reverse the removal procedure.System Board1. Prepare the computer for disassembly (Preparation for Disassembly on page 27

BatteryThe battery that comes with the computer provides power to the real-time clock. When replacing thebattery, use a battery equivalent to the batt

Type 1 Battery Holder1. Lift the battery out of its holder.2. Slide the replacement battery into position, positive side up.3. The battery holder auto

4. Plug in the computer and turn on power to the computer.5. Reset the date and time and any special system setups using Computer Setup. Refer to Comp

A Connector Pin AssignmentsThis appendix contains the pin assignments for many computer and workstation connectors. Some ofthese connectors may not be

Ethernet RJ-45Connector and Icon Pin Signal1234(+) Transmit Data(-) Transmit Data(+) Receive DataUnused5678Unused(-) Receive DataUnusedUnusedEthernet

Parallel InterfaceConnector and IconPin Signal Pin Signal1234StrobeData Bit 0Data Bit 1Data Bit 2 10111213AcknowledgeBusyPaper EndSelect5678Data Bi

USBConnector and Icon Pin Signal1234+5 VDC- Data+ DataGroundMicrophoneConnector and Icon (1/8” miniphone) Pin Signal1231 (Tip)2 (Ring)3 (Shield)Audio_

External Infrared TransceiverConnector and Icon Pin Signal1234TransmitReceiveGround5V5678ModeNot UsedNot UsedNot UsedMonitorConnector and IconPin Sign

HP Backup and Recovery ManagerThe HP Backup and Recovery Manager is an easy-to-use, versatile application that allows you to backup and recover the pr

ATA/ATAPI (IDE) Standard Drive CableConnectorPin Signal Pin Signal Pin Signal1234ResetGroundDD7DD815161718DD1DD14DD0DD1529303132DMAKGroundINTRQIOCS165

CD-ROM 50-Pin ConnectorConnectorPin Signal Pin Signal Pin Signal Pin Signal1234Audio L-chAudio R-chAudio GNDGND14151617DD12DD3DD13DD227282930IORDYDMAC

24-Pin MicroFit PowerConnector2412131FrontPin Signal Pin Signal Pin Signal Pin Signal123456+5 VauxGND+5V+5VPS_ONGND789101112PWRGD+3.3V+3.3VTachGNDFan

SATA Data and PowerDrive Connector Pin Signal Pin Signal Pin Signal Pin SignalS1S5GroundB-S2S6A+B+S3S7A-GroundS4 GroundP1P5P9P13GroundB-V 5V 12P2P6

52535455PERp8PERN8GNDGND57585960PERn9GNDGNDPERp1062636465GNDGNDPERp11PERn1167686970GNDPERp12PERn12GND72737475PERp13PERn13GNDGND7677787980PERp14PERn14G

52535455GNDGNDPETp9PETn957585960GNDPETp10PETn10GND62636465PETp11PETn11GNDGND67686970PETn12GNDGNDPETp1372737475GNDGNDPETp14PETn147677787980GNDGNDPETp15

313233343636PETn0SMB_DATAPETp0GNDGNDUSB_D-373839404142Reserved*USB_D+Reserved*GNDReserved*LED_WWAN#434445464748Reserved*LED_WLAN#Reserved*LED_WPAN#Res

B Power Cord Set RequirementsThe power supplies on some computers have external power switches. The voltage select switch featureon the computer permi

Country-Specific RequirementsAdditional requirements specific to a country are shown in parentheses and explained below.Country Accrediting Agency C

C TroubleshootingSafety and ComfortWARNING! Misuse of the computer or failure to establish a safe and comfortable work environmentmay result in discom

2 Computer Setup (F10) UtilityComputer Setup (F10) UtilitiesUse Computer Setup (F10) Utility to do the following:●Change factory default settings.●Set

To assist you in resolving problems online, HP Instant Support Professional Edition provides you withself-solve diagnostics. If you need to contact HP

●If you have installed an operating system other than the factory-installed operating system, checkto be sure that it is supported on the system.●If t

Computer will not respond to USB keyboard or mouse.Cause SolutionKeyboard or mouse is not connected to computer. Connect keyboard and mouse cables to

Poor performance is experienced.Cause SolutionToo many applications running. 1. Close unnecessary applications to free up memory.Some applications run

Computer is beeping and will not start.Cause SolutionInternal error has occurred and the computer is beeping acode.Refer to Interpreting POST Audible

Computer will not start.Cause SolutionWrong memory modules were used in the upgrade or memorymodules were installed in the wrong location.1. Review th

Interpreting POST Audible CodesThis section covers the audible codes that may occur before or during POST that do not necessarilyhave an error code or

Contacting Customer SupportFor help and service, contact an authorized reseller or dealer. To locate a reseller or dealer near you,visit http://www.hp

D System Board and Riser BoardReference DesignatorsThese reference designators are used on most but not all HP system and riser boards.Designator Comp

J38J39J40Secondary SCSI connectorStacked parallel/SCSI connectorAGP slotJ41J50J51J52J53x16 PCI Express slot for graphicsFirst parallel portSecond para