HP Compaq dc7900 USDT Specifications Page 1

Technical Reference GuideHP Compaq dc7900 SeriesBusiness Desktop ComputersDocument Part Number: 506665-001September 2008This document provides informa

1-4 www.hp.com Technical Reference GuideIntroductionCDS compact disk systemCGA color graphics adapterCh Channel, chaptercm centimeterCMC cache/memory

A-2 www.hp.com Technical Reference GuideError Messages and CodesA.3 Power-On Self Test (POST) MessagesTable A-2.Power-On Self Test (POST) MessagesErro

Technical Reference Guide www.hp.com A-3Error Messages and Codes514-CPU or Chassis Fan not detected.CPU fan is not connected or may have malfunctioned

A-4 www.hp.com Technical Reference GuideError Messages and Codes1801-Microcode Patch Error A processor is installed for which the BIOS ROM has no patc

Technical Reference Guide www.hp.com A-5Error Messages and CodesA.4 System Error Messages (1xx-xx)NOTES:[1] 102 message code may be caused by one of a

A-6 www.hp.com Technical Reference GuideError Messages and CodesA.5 Memory Error Messages (2xx-xx)Table A-4.Memory Error MessagesMessage Probable Caus

Technical Reference Guide www.hp.com A-7Error Messages and CodesA.6 Keyboard Error Messages (30x-xx)211-02 Error while saving memory during random mem

A-8 www.hp.com Technical Reference GuideError Messages and CodesA.7 Printer Error Messages (4xx-xx)A.8 Video (Graphics) Error Messages (5xx-xx)See Tab

Technical Reference Guide www.hp.com A-9Error Messages and CodesA.9 Diskette Drive Error Messages (6xx-xx)600-xx = Diskette drive ID test 609-xx = Dis

A-10 www.hp.com Technical Reference GuideError Messages and CodesA.10 Serial Interface Error Messages (11xx-xx)Table A-9.Serial Interface Error Messag

Technical Reference Guide www.hp.com A-11Error Messages and CodesA.11 Modem Communications Error Messages (12xx-xx)Table A-10.Modem Communications Err

Technical Reference Guide www.hp.com 1-5IntroductionEISA extended ISAEPP enhanced parallel portEIDE enhanced IDEESCD Extended System Configuration Dat

A-12 www.hp.com Technical Reference GuideError Messages and CodesNOTES:[1] Local loopback mode [4] Modem auto originate test[2] Analog loopback orig

Technical Reference Guide www.hp.com A-13Error Messages and CodesA.13 Hard Drive Error Messages (17xx-xx)Table A-12 Hard Drive Error MessagesMessage P

A-14 www.hp.com Technical Reference GuideError Messages and CodesNOTE:xx = 00, Hard drive ID test xx = 19, Hard drive power mode testxx = 01, Hard dri

Technical Reference Guide www.hp.com A-15Error Messages and CodesA.14 Hard Drive Error Messages (19xx-xx)1900-xx = Tape ID test failed 1904-xx = Tape

A-16 www.hp.com Technical Reference GuideError Messages and CodesA.15 Video (Graphics) Error Messages (24xx-xx)A.16 Audio Error Messages (3206-xx)Tabl

Technical Reference Guide www.hp.com A-17Error Messages and CodesA.17 DVD/CD-ROM Error Messages (33xx-xx)A.18 Network Interface Error Messages (60xx-x

A-18 www.hp.com Technical Reference GuideError Messages and CodesA.19 SCSI Interface Error Messages (65xx-xx, 66xx-xx, 67xx-xx)n = 5, Hard drive= 6, C

Technical Reference Guide www.hp.com A-19Error Messages and CodesA.20 Pointing Device Interface Error Messages (8601-xx)Table A-19Pointing Device Inte

A-20 www.hp.com Technical Reference GuideError Messages and Codes

Technical Reference Guide www.hp.com Index-1IndexNumerics8259 Mode 4-7AAMT 2-7, 2-9, 3-4, 8-8APIC Mode 4-7, 4-8Audio codec 2-8, 5-13, 5-14Audio Specif

1-6 www.hp.com Technical Reference GuideIntroductionIrDA Infrared Data AssociationIRQ interrupt requestISA industry standard architectureKb/KB kilobit

Index-2 www.hp.com Technical Reference GuideIndexpower LED indications 7-7processor, Intel 3-2Processor Upgrading 3-3RReal-time clock (RTC) 4-9ROM fla

Technical Reference Guide www.hp.com 1-7IntroductionODD optical disk driveOS operating systemPAL 1. programmable array logic 2. phase alternating lin

1-8 www.hp.com Technical Reference GuideIntroductionSDVO Serial digital video outputSEC Single Edge-ConnectorSECAM sequential colour avec memoire (seq

Technical Reference Guide www.hp.com 1-9IntroductionURL Uniform resource locatorus/µs microsecondUSB Universal Serial BusUTP unshielded twisted pairVv

1-10 www.hp.com Technical Reference GuideIntroduction

Technical Reference Guide www.hp.com 2-12System Overview2.1 IntroductionThe HP Compaq dc7900 Business PC personal computers (Figure 2-1) deliver an ou

2-2 www.hp.com Technical Reference GuideSystem Overview2.2 FeaturesThe following standard features are included on all models unless otherwise indicat

Technical Reference Guide www.hp.com 2-3System OverviewTable 2-1 shows the differences in features between the different PC series based on form facto

© Copyright 2008 Hewlett-Packard Development Company, L.P.The information contained herein is subject to change without notice. Microsoft, MS-DOS, Win

2-4 www.hp.com Technical Reference GuideSystem Overview2.3 System ArchitectureThe systems covered in this guide feature an architecture based on the I

Technical Reference Guide www.hp.com 2-5System OverviewFigure 2-2. HP Compaq dc7900 Business PC Architecture, Block diagramParallel I/F [2]IntelProces

2-6 www.hp.com Technical Reference GuideSystem Overview2.3.1 Intel Processor SupportThe models covered in this guide are designed to support the follo

Technical Reference Guide www.hp.com 2-7System Overview2.3.2 ChipsetThe Intel Q45 Express chipset consists of a Graphics Memory Controller Hub (GMCH)

2-8 www.hp.com Technical Reference GuideSystem Overview2.3.3 Support ComponentsInput/output functions not provided by the chipset are handled by other

Technical Reference Guide www.hp.com 2-9System Overview2.3.5 Mass StorageAll models support at least two mass storage devices, with one being external

2-10 www.hp.com Technical Reference GuideSystem Overview2.3.9 Graphics SubsystemThese systems use the Q45 GMCH component, which includes an integrated

Technical Reference Guide www.hp.com 2-11System Overview2.4 SpecificationsThis section includes the environmental, electrical, and physical specificat

2-12 www.hp.com Technical Reference GuideSystem OverviewNOTES: [1] System configured with 1 hard drive, 1 diskette drive (SFF and CMT only), and no PC

Technical Reference Guide www.hp.com 2-13System OverviewNOTE[1] USDT models use “slim” drive.[2] Requires special label-etchable media. Table 2-9Optic

Technical Reference Guide www.hp.com iiiContents1Introduction1.1 About this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-14 www.hp.com Technical Reference GuideSystem OverviewNOTES:[1] USDT supports 2.5-in. drives only.[2] USDT supports 1.5 Gb/s drives only.[3] USDT su

Technical Reference Guide www.hp.com 3-13Processor/Memory Subsystem3.1 IntroductionThis systems support the Intel Pentium and Core processor families

3-2 www.hp.com Technical Reference GuideProcessor/Memory Subsystem3.2 Intel ProcessorsThese systems each feature an Intel processor in a FC-LGA775 pac

Technical Reference Guide www.hp.com 3-3Processor/Memory Subsystem3.2.2 Processor Changing/UpgradingAll models use the LGA775 ZIF (Socket T) mounting

3-4 www.hp.com Technical Reference GuideProcessor/Memory Subsystem3.3 Memory SubsystemAll models support non-ECC PC2-5300 and PC2-6400 DDR2 memory. Th

Technical Reference Guide www.hp.com 3-5Processor/Memory Subsystem3.3.1 Memory UpgradingTable 3-2 shows suggested memory configurations for these syst

3-6 www.hp.com Technical Reference GuideProcessor/Memory SubsystemFigure 3-2. System Memory Map (for maximum of 8 gigabytes)✎All locations in memory

Technical Reference Guide www.hp.com 4-14System Support4.1 IntroductionThis chapter covers subjects dealing ICH10 with basic system architecture and c

4-2 www.hp.com Technical Reference GuideSystem SupportTable 4-1 shows the standard configuration of device numbers and IDSEL connections for component

Technical Reference Guide www.hp.com 4-3System SupportThe PCI bus supports a bus master/target arbitration scheme. A bus master is a device that has b

iv www.hp.com Technical Reference GuideContents3 Processor/Memory Subsystem3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-4 www.hp.com Technical Reference GuideSystem SupportLink LayerThe link layer provides data integrity by adding a sequence information prefix and a C

Technical Reference Guide www.hp.com 4-5System Support4.2.6 PCI ConnectorsPCI 2.3 ConnectorFigure 4-2. 32-bit, 5.0-volt PCI 2.3 Bus ConnectorTable 4

4-6 www.hp.com Technical Reference GuideSystem SupportPCI Express ConnectorsFigure 4-3. PCI Express Bus ConnectorsTable 4-4.PCI Express Bus Connecto

Technical Reference Guide www.hp.com 4-7System Support4.3 System ResourcesThis section describes the availability and basic control of major subsystem

4-8 www.hp.com Technical Reference GuideSystem SupportNOTES: [1] SFF and CMT only[2] CMT onlyThe PCI interrupts can be configured by PCI Config

Technical Reference Guide www.hp.com 4-9System Support4.4 Real-Time Clock and Configuration MemoryThe Real-time clock (RTC) and configuration memory

4-10 www.hp.com Technical Reference GuideSystem Support4.4.2 Standard CMOS LocationsTable 4-6 describes standard configuration memory locations 0Ah-3F

Technical Reference Guide www.hp.com 4-11System SupportPower-On / Setup PasswordThese systems include a power-on and setup passwords, which may be ena

4-12 www.hp.com Technical Reference GuideSystem SupportLevel 0—Cover removal indication is essentially disabled at this level. During POST, status bit

Technical Reference Guide www.hp.com 4-13System Support4.5.3 System StatusThese systems provide a visual indication of system boot, ROM flash, and ope

Technical Reference Guide www.hp.com vContents5.6.2 Pointing Device Interface Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-14 www.hp.com Technical Reference GuideSystem SupportThe RPM (speed) of all fans is the result of the temperature of the CPU as sensed by speed cont

Technical Reference Guide www.hp.com 4-15System SupportNOTE: Assume unmarked gaps are unused, reserved, or used by functions that employ variable I/O

4-16 www.hp.com Technical Reference GuideSystem Support4.6.2 GPIO FunctionsICH10 FunctionsThe ICH10 provides various functions through the use of prog

Technical Reference Guide www.hp.com 5-15Input/Output Interfaces5.1 IntroductionThis chapter describes the standard interfaces that provide input and

5-2 www.hp.com Technical Reference GuideInput/Output Interfaces5.2 SATA/eSATA InterfacesThese systems provide two, three, or four serial ATA (SATA) in

Technical Reference Guide www.hp.com 5-3Input/Output Interfaces5.2.2 eSATA interfaceThe SFF and CMT form factors provide a SATA/eSATA port (connector

5-4 www.hp.com Technical Reference GuideInput/Output Interfaces5.3 Diskette Drive InterfaceThe SFF and CMT form factors support a diskette drive throu

Technical Reference Guide www.hp.com 5-5Input/Output InterfacesThe SFF and CMT form factors use a standard 34-pin connector for diskette drives (refer

5-6 www.hp.com Technical Reference GuideInput/Output Interfaces5.4 Serial InterfaceSystems covered in this guide may include one RS-232-C type serial

Technical Reference Guide www.hp.com 5-7Input/Output Interfaces5.5 Parallel Interface SupportThe SFF and CMT form factors include a system board head

vi www.hp.com Technical Reference GuideContents8SYSTEM BIOS8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8 www.hp.com Technical Reference GuideInput/Output Interfaces5.5.4 Parallel Interface ConnectorFigure 5-5 and Table 5-5 show the connector and pinou

Technical Reference Guide www.hp.com 5-9Input/Output Interfaces5.6 Keyboard/Pointing Device InterfaceThe keyboard/pointing device interface function

5-10 www.hp.com Technical Reference GuideInput/Output Interfaces5.6.2 Pointing Device Interface OperationThe pointing device (typically a mouse) conn

Technical Reference Guide www.hp.com 5-11Input/Output Interfaces5.7 Universal Serial Bus InterfaceThe Universal Serial Bus (USB) interface provides a

5-12 www.hp.com Technical Reference GuideInput/Output Interfaces5.7.2 USB Cable DataThe recommended cable length between the host and the USB device s

Technical Reference Guide www.hp.com 5-13Input/Output Interfaces5.8 Audio SubsystemThese systems use the HD audio controller of the 82801 component to

5-14 www.hp.com Technical Reference GuideInput/Output Interfaces5.8.1 HD Audio ControllerThe HD Audio Controller is a PCI Express device that is integ

Technical Reference Guide www.hp.com 5-15Input/Output Interfaces5.8.4 Audio SpecificationsThe specifications for the HD Audio subsystem are listed in

5-16 www.hp.com Technical Reference GuideInput/Output Interfaces5.9 Network Interface ControllerThese systems provide 10/100/1000 Mbps network support

Technical Reference Guide www.hp.com 5-17Input/Output Interfaces5.9.1 Wake-On-LAN SupportThe NIC supports the Wired-for-Management (WfM) standard of W

Technical Reference Guide www.hp.com 1-11Introduction1.1 A b o u t t h i s G u i d eThis guide provides technical information about HP Compaq dc79

5-18 www.hp.com Technical Reference GuideInput/Output Interfaces5.9.4 NIC ConnectorFigure 5-12 shows the RJ-45 connector used for the NIC interface. T

Technical Reference Guide www.hp.com 6-16Integrated Graphics Subsystem6.1 IntroductionThis chapter describes the graphics subsystem that is integrated

6-2 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem6.2 Functional DescriptionThe Intel Q45 GMCH component includes an Intel integrat

Technical Reference Guide www.hp.com 6-3Integrated Graphics SubsystemThe GMA 4500 uses a portion of system memory for instructions, textures, and fram

6-4 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem6.3 Display ModesThe GMA supports the following standard display modes for 2D vid

Technical Reference Guide www.hp.com 6-5Integrated Graphics Subsystem6.4 UpgradingAll systems provide direct, dual-monitor support; a VGA montor and a

6-6 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem6.5 Monitor ConnectorsAll form factors provide an analog VGA connector and a Disp

Technical Reference Guide www.hp.com 6-7Integrated Graphics Subsystem6.5.2 DisplayPort ConnectorAll systems include a DisplayPort connector (Figure 6-

6-8 www.hp.com Technical Reference GuideIntegrated Graphics Subsystem

Technical Reference Guide www.hp.com 7-17Power and Signal Distribution7.1 IntroductionThis chapter describes the power supplies and discusses the meth

1-2 www.hp.com Technical Reference GuideIntroduction1. 3 S e r i a l N u m b e rThe serial number is located on a sticker placed on the exterior cab

7-2 www.hp.com Technical Reference GuidePower and Signal DistributionTable 7-1 lists the specifications of the external supply.NOTES:Total continuous

Technical Reference Guide www.hp.com 7-3Power and Signal DistributionNOTES:Total continuous power should not exceed 240 watts. Total surge power (<

7-4 www.hp.com Technical Reference GuidePower and Signal DistributionTable 7-3 lists the specifications for the 365-watt power supply used in the CMT

Technical Reference Guide www.hp.com 7-5Power and Signal DistributionFigure 7-4 shows the power supply cabling for CMT systems.NOTES: Connectors not

7-6 www.hp.com Technical Reference GuidePower and Signal Distribution7.3 Power C on tro lThe generation of +3, +5, and +12 VDC is controlled digitally

Technical Reference Guide www.hp.com 7-7Power and Signal DistributionA dual-color LED located on the front panel (bezel) is used to indicate system po

7-8 www.hp.com Technical Reference GuidePower and Signal Distribution7.3.2 Wake Up EventsThe PS On signal can be activated with a power “wake-up” of

Technical Reference Guide www.hp.com 7-9Power and Signal Distribution7.3.3 Power ManagementThese systems include power management functions designed t

7-10 www.hp.com Technical Reference GuidePower and Signal Distribution7.4 Signal DistributionTable 7-7 lists the reference designators for LEDs, conne

Technical Reference Guide www.hp.com 7-11Power and Signal DistributionFigure 7-5 shows pinouts of headers used on the sytem boards.NOTE: No polarity

Technical Reference Guide www.hp.com 1-3Introduction1.5 Common Acronyms and AbbreviationsTable 1-1 lists the acronyms and abbreviations used in this

7-12 www.hp.com Technical Reference GuidePower and Signal Distribution

Technical Reference Guide www.hp.com 8-18SYSTEM BIOS8.1 IntroductionThe System Basic Input/Output System (BIOS) of the computer is a collection of mac

8-2 www.hp.com Technical Reference GuideSYSTEM BIOS8.2 ROM Flashing The system BIOS firmware is contained in a flash ROM device that can be re-written

Technical Reference Guide www.hp.com 8-3SYSTEM BIOS8.3 Boot FunctionsThe BIOS supports various functions related to the boot process, including those

8-4 www.hp.com Technical Reference GuideSYSTEM BIOSThe BIOS performs memory detection and configuration with the following steps:1. Program the buffer

Technical Reference Guide www.hp.com 8-5SYSTEM BIOS8.4 Client Management FunctionsTable 8-2 provides a partial list of the client management BIOS fun

8-6 www.hp.com Technical Reference GuideSYSTEM BIOS8.4.1 System ID and ROM TypeDiagnostic applications can use the INT 15, AX=E800h BIOS function to i

Technical Reference Guide www.hp.com 8-7SYSTEM BIOS8.5 SMBIOSIn support of the DMI specification, PnP functions 50h and 51h are used to retrieve the S

8-8 www.hp.com Technical Reference GuideSYSTEM BIOS8.6 USB Legacy SupportThe system BIOS ROM checks the USB port, during POST, for the presence of a

Technical Reference Guide www.hp.com A-1AError Messages and CodesA.1 IntroductionThis appendix lists the error codes and a brief description of the pr