HP dc7900 manual Signal Distribution, CR1 +5 VDC LED

Page 88

Power and Signal Distribution

7.4Signal Distribution

Table 7-7 lists the reference designators for LEDs, connectors, headers, and switches used on the system boards for systems covered in this guide. Unless otherwise indicated, components are used on all system boards.

			Table 7-7.
			System Board Component Designations

		Designator	Component function	Notes
		CR1	+5 VDC LED
		E1	Descriptor table override header
		E14	SPI ROM boot block header
		E49 / JP49	Password clear header / jumper
		J9	Stacked RJ-45 & dual USB connectors
		J10	Stacked quad USB connectors
		J20	PCI 2.3 connector	SFF & CMT only
		J21	PCI 2.3 connector	CMT only
		J22	PCI 2.3 connector	CMT only
		J31	PCIe x1 connector	SFF & CMT only
		J32	PCIe x1 connector	SFF & CMT only
		J41	PCIe x16 graphics connector	SFF & CMT only
		J42	PCIe x4 graphics (x16) connector	SFF & CMT only
		J50	Parallel port	SFF & CMT only
		J68	Stacked keyboard, mouse PS/2 connectors
		J69	VGA monitor DB-15 connector
		J78	Stacked audio line-in, headphone/line-out 1/8” jacks
		J103	DC input	USDT only
		P1	Power supply connector	SFF & CMT only
		P3	Vccp (PWRCPU) header
		P5	Control panel (power button, power LED) header
		P6	Internal speaker header
		P8	CPU fan header
		P9	Chassis fan, primary, header
		P10	Diskette drive connector	SFF & CMT only
		P23	Front panel audio header
		P24	Front panel USB header
		P52	Serial port, secondary, header	SFF & CMT only
		P53	Serial port, primary connector	SFF & CMT only
		P54	Serial port, primary header	SFF only
		P60	SATA0 (controller 1, primary master) connector (dark blue)
		P61	SATA1 (controller 1, secondary master) connector (white)	SFF & CMT only
		P62	SATA2 (controller 1, primary slave) connector (light blue)	SFF & CMT only
		P63	SATA3 (controller 1, secondary slave) connector (orange)	CMT only
		P64	SATA4 / eSATA (controller 2, primary master) connector (black)	SFF & CMT only
		P124	Hood lock header	SFF & CMT only
		P125	Hood sense header
		P126	Parallel port header	SFF and CMT only
		P150	Media reader header
		P151	Ready boost / dash NIC header

	7-10		www.hp.com	Technical Reference Guide

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Contents Technical Reference Guide SeptemberTechnical Reference Guide Contents System Support Processor/Memory SubsystemInput/Output Interfaces Power and Signal Distribution Integrated Graphics SubsystemSystem Bios Error Messages and Codes IndexIntroduction About this GuideAdditional Information Sources Online ViewingSerial Number Notational ConventionsSpecial Notices ValuesCommon Acronyms and Abbreviations Acronyms and Abbreviations Acronym or DescriptionCDS CGACMC CmosEisa EPPEide EscdIRQ ISALAN LCDODD PALPata PCASdvo SECSecam SgramAcronyms and Abbreviations Acronym or Abbreviation DescriptionIntroduction System Overview IntroductionFeatures Sodimm Dimm Feature Difference Matrix by Form Factor1ODD Architectural Differences By Form Factor System ArchitectureFunction HP Compaq dc7900 Business PC Architecture, Block diagram Intel Processor Support Chipset Components and Functionality ChipsetComponents Function Support Components System MemorySupport Component Functions Component Name FunctionMass Storage Serial InterfaceUniversal Serial Bus Interface Network Interface ControllerGraphics Subsystem Audio SubsystemIntegrated Graphics Subsystem Statistics Integrated Graphics ControllerSpecifications Environmental Specifications Factory ConfigurationPower Supply Electrical Specifications Parameter Operating Non-operatingPhysical Specifications Parameter Usdt SFF CMTOptical Drive Specifications HP SuperMulti LightScribeParameter CD-RW/DVD-ROM ComboHard Drive Specifications Parameter 80 GB 160 GB 250 GBProcessor/Memory Subsystem Processor/Memory Subsystem ArchitectureIntel Processors Intel Processor OverviewProcessor Changing/Upgrading Supported Processors partial listingClock FormMemory Subsystem Memory Upgrading Memory Mapping and Pre-allocationMemory Socket Loading Channel a Channel B Socket Socket 2 Socket 4 TotalSystem Memory Map for maximum of 8 gigabytes PCI Bus Overview System SupportPCI 2.3 Bus Operation PCI Component Configuration Access PCI Bus PCI Component Function # Device # Wired toPCI Express Bus Operation Software/Driver LayerTransaction Protocol Layer PCI Bus Mastering DevicesPCI Power Management Support Option ROM MappingPCI Interrupts Link LayerPCI 2.3 Connector PCI ConnectorsPCI 2.3 Bus Connector Pinout PCI Express Connectors PCI Express Bus Connector PinoutApic Mode System ResourcesInterrupts ModeDirect Memory Access PCI Interrupt DistributionReal-Time Clock and Configuration Memory Clearing CmosConfiguration Memory Cmos Map System ManagementStandard Cmos Locations Security FunctionsPower-On / Setup Password Setup PasswordCable Lock Provision Interface SecurityPower Management Smart Cover Lock OptionalAcpi Wake-Up Events Acpi Wake-Up Event System Wakes FromSystem Status PowerLED Beeps Action Required System StatusThermal Sensing and Cooling System Operational Status LED IndicationsRegister Map and Miscellaneous Functions System I/O MapSystem I/O Map Port FunctionICH10 Functions Gpio FunctionsSIO Controller Functions Input/Output Interfaces Pin Sata Connector Pinout SATA/eSATA InterfacesSata interface Pin DescriptionOptional eSATA Bracket/Cable Assembly ESATA interfaceDiskette Drive Interface Pin Diskette Drive Connector Pinout Pin Signal DescriptionDB-9 Serial Connector Pinout Serial InterfaceStandard Parallel Port Mode Enhanced Parallel Port ModeExtended Capabilities Port Mode Parallel Interface SupportDB-25 Parallel Connector Pinout Parallel Interface ConnectorPin Signal Function Keyboard/Pointing Device Interface Keyboard Interface OperationKeyboard/Pointing Device Interface Connector Keyboard/Pointing Device Connector PinoutPointing Device Interface Operation DataUSB Connector Controller Signals USB Connector Location all form factorsUniversal Serial Bus Interface ICH10 USB Port MappingUSB Connector Pinout USB Cable DataUSB Cable Length Data USB Color CodeAudio Subsystem Functional Block Diagram Audio SubsystemHD Audio Link Bus HD Audio ControllerAudio Multistreaming Audio Specifications HD Audio Subsystem SpecificationsParameter Measurement ADC/DACNetwork Interface Controller LEDWake-On-LAN Support Power Management SupportAlert Standard Format Support NIC Connector NIC SpecificationsNIC Specifications Parameter Compatibility standard orprotocolIntegrated Graphics Subsystem Functional Description RGBSdram Installed Maximum Memory Allocation GMA 4500 Memory AllocationDisplay Modes Resolution Maximum Refresh Rate Analog Digital MonitorIGC Standard 2D Display Modes Upgrading Analog Monitor Connector Monitor ConnectorsDB-15 Monitor Connector Pinout DisplayPort Connector Pin SignalIntegrated Graphics Subsystem Power Distribution Power and Signal DistributionUsdt Power Distribution 2 SFF/CMT Power Distribution Usdt 135-Watt Power Supply Unit SpecificationsSFF 240-Watt Power Supply Unit Specifications Min Range Current Max Surge Tolerance Loading RippleCMT 365-Watt Power Supply Unit Specifications Range or Min Current Max Surge Tolerance Loading RippleShows the power supply cabling for CMT systems Energy Star CompliancyPower Control Power ButtonPower Button Actions Pressed Power Button Results Power LED Indications Condition Wake Up Events Wake-On-LANSystem Power States Power Transition OS RestartState System Condition Consumption To S0 by RequiredSignal Distribution CR1 +5 VDC LEDSystem Board Component Designations Power and Signal Distribution System Bios Upgrading ROM FlashingChangeable Splash Screen Boot Functions Boot Device OrderNetwork Boot F12 Support Memory Detection and ConfigurationBoot Error Codes Boot Error CodesVisual power LED Audible speaker Meaning Client Management Functions Function ModeClient Management Functions INT15 Temperature Status System ID and ROM TypeSystem ID Numbers SubsystemSmbios Functions Type DataUSB Legacy Support Management Engine FunctionsError Messages and Codes Beep/Power LED CodesTable A-1 Beep/Power LED Codes Beeps Power LED Probable CausePower-On Self Test Post Messages Table A-2 Error Message Probable Cause Table A-2System Error Messages Table A-3 System Error Messages Probable CauseMemory Error Messages Table A-4 Memory Error Messages Probable CauseKeyboard Error Messages Table A-5 Keyboard Error Messages Probable CausePrinter Error Messages Video Graphics Error MessagesTable A-6 Printer Error Messages Probable Cause Table A-7 Video Graphics Error Messages Probable CauseDiskette Drive Error Messages Table A-8 Diskette Drive Error Messages Probable CauseSerial Interface Error Messages Table A-9 Serial Interface Error Messages Probable CauseModem Communications Error Messages System Status Error Messages System Status Error MessagesTable A-11 Hard Drive Error Messages Table A-12 Hard Drive Error Messages Probable CauseXx = 03, Hard drive read/write compare test Table A-13 Hard Drive Error Messages Probable Cause Table A-14 Video Graphics Error Messages Probable Cause Audio Error MessagesTable A-15 Audio Error Messages Probable Cause 17 DVD/CD-ROM Error Messages Network Interface Error MessagesDVD/CD-ROM Error Messages Table A-17 Network Interface Error Messages Probable CauseScsi Interface Error Messages 65xx-xx, 66xx-xx Table A-18 Scsi Interface Error MessagesPointing Device Interface Error Messages 8601-xx Error Messages and Codes Index NumericsIndex

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