Power and Signal Distribution, Introduction | HP 8000 tower manual

Power and Signal Distribution

7

Power and Signal Distribution

7.1Introduction

This chapter describes the power supplies and discusses the methods of general power and signal distribution. Topics covered in this chapter include:

■USDT power distribution (7.2)

■SFF/CMT power distribution (7.3)

■Power Control (7.4)

■Signal distribution (7.5)

7.2USDT Power Distribution

Each form factor uses a unique power supply assembly and implements different methods of power generation and distribution. The USDT form factor uses an external (“brick”) supply while the SFF and CMT form factors use a power supply unit contained within the system chassis. The subassemblies are not interchangeable between the three form factors.

The USDT form factor uses an external (“brick”) supply that connects to the chassis through a three-conductor cable (Figure 7-1). All voltages required by the processing circuits, peripherals, and storage devices are produced on the system board from the 19.5 VDC produced by the external power supply assembly. The external power supply always produces 19.5 VDC as long as it is connected to an active AC outlet.

Front Bezel

Power Button

USDT Chassis

System Board

Power On

Power Control Logic,

Voltage Regulators

+19.5	Rtn	Pwr rating
VDC		& ID

90 - 264 VAC

External

Power Supply

Unit

Figure 7-1. USDT Power Generation, Block Diagram

Technical Reference Guide

www.hp.com

7-1

Image 75

HP 8000 tower manual Power and Signal Distribution, Introduction, USDT Power Distribution

Contents

December Technical Reference GuideHP Compaq 8000 Elite Series Business Desktop Computers Document Part Number Technical Reference Guide HP Compaq 8000 Elite Series Business Desktop ComputersFirst Edition December Document Part Number Contents 1 Introduction2 System Overview 3 Processor/Memory Subsystem 4 System Support5 Input/Output Interfaces 6 Integrated Graphics Subsystem 7 Power and Signal Distribution A Error Messages and Codes Index 8 SYSTEM BIOS 1.1.1 Online Viewing Introduction1.1 About this Guide 1.2 Additional Information Sources 1.4.2 Values 1.3 Serial Number1.4 Notational Conventions 1.4.1 Special Notices Abbreviation 1.5 Common Acronyms and AbbreviationsAcronyms and Abbreviations Acronym or Table 1-1 Continued Abbreviation Table 1-1 ContinuedAcronyms and Abbreviations Acronym or Abbreviation Table 1-1 ContinuedAcronyms and Abbreviations Acronym or Abbreviation Table 1-1 ContinuedAcronyms and Abbreviations Acronym or Abbreviation Table 1-1 ContinuedAcronyms and Abbreviations Acronym or Abbreviation 1-10 2.1 Introduction System Overview 2.2 Features USDT Feature Differences by Form Factor Architectural Differences by Form Factor 2.3 System Architecture Technical Reference Guide 2.3.1 Intel Processor Support 2.3.2 ChipsetChipset Components and Functionality 2.3.3 Support Components 2.3.4 System MemorySupport Component Functions 2.3.8 Network Interface Controller 2.3.5 Mass Storage2.3.6 Serial Interface 2.3.7 Universal Serial Bus Interface 2.3.9 Graphics Subsystem 2.3.10 Audio SubsystemIntegrated Graphics Subsystem Statistics 2.4 Specifications 2.3.11 HP ProtectTools Embedded SecurityEnvironmental Specifications Factory Configuration Physical Specifications Power Supply Electrical Specifications 2-12 3.1 Introduction Processor/Memory Subsystem 3.2.1 Intel Processor Overview 3.2 Intel Processors Supported Processors partial listing 3.2.2 Processor Changing/Upgrading 3.3 Memory Subsystem 3.3.1 Memory Upgrading 3.3.2 Memory Mapping and Pre-allocationMemory Socket Loading Figure 3-2. System Memory Map for maximum of 8 gigabytes Expansion AreaBase Memory 4.2.1 PCI 2.3 Bus Operation System Support4.1 Introduction 4.2 PCI Bus Overview PCI Bus PCI Component Configuration AccessWired to System Support PCI Bus Mastering Devices 4.2.2 PCI Express Bus OperationSoftware/Driver Layer Transaction Protocol Layer Link Layer 4.2.5 PCI Power Management Support4.2.3 Option ROM Mapping 4.2.4 PCI Interrupts Figure 4-2. 32-bit, 5.0-volt PCI 2.3 Bus Connector 4.2.6 PCI ConnectorsPCI 2.3 Connector PCI 2.3 Bus Connector Pinout PCIe Connectors PCIe Bus Connector PinoutFigure 4-3. PCIe Bus Connectors APIC Mode 4.3 System Resources4.3.1 Interrupts 8259 Mode PCI Interrupt Distribution 4.3.2 Direct Memory Access 4.4.1 Clearing CMOS 4.4 Real-Time Clock and Configuration Memory Configuration Memory CMOS Map 4.5 System Management4.4.2 Standard CMOS Locations 4.5.1 Security Functions I/O Interface Security Power-On / Setup PasswordSetup Password Cable Lock Provision 4.5.2 Power Management Smart Cover Lock OptionalACPI Wake-Up Events 4.5.3 System Status 4.5.4 Thermal Sensing and CoolingSystem Operational Status LED Indications 4.6.1 System I/O Map 4.6 Register Map and Miscellaneous Functions System I/O Map I/O PortFunction 4.6.2 GPIO Functions ICH10 FunctionsSIO Controller Functions 5.1 Introduction Input/Output Interfaces 5.2.1 SATA interface 5.2 SATA/eSATA Interfaces 5.2.2 eSATA interface DB-9 Serial Connector Pinout 5.3 Serial Interface 5.4.3 Extended Capabilities Port Mode 5.4 Parallel Interface Support5.4.1 Standard Parallel Port Mode 5.4.2 Enhanced Parallel Port Mode 5.4.4 Parallel Interface Connector DB-25 Parallel Connector Pinoute w q - 9 8 7 6 5 4 3 2 1 g f d s a p o i u y t r 5.5.1 Keyboard Interface Operation 5.5 Keyboard/Pointing Device Interface 5.5.3 Keyboard/Pointing Device Interface Connector 5.5.2 Pointing Device Interface OperationKeyboard/Pointing Device Connector Pinout 5.6 Universal Serial Bus Interface 5.6.1 USB Connector USB Color Code 5.6.2 USB Cable DataUSB Connector Pinout USB Cable Length Data Figure 5-8. Audio Subsystem Functional Block Diagram 5.7 Audio Subsystem 5.7.1 HD Audio Controller 5.7.2 HD Audio Link Bus5.7.3 Audio Multistreaming 5.7.4 Audio Specifications The specifications for the HD Audio subsystem are listed in TableHD Audio Subsystem Specifications 5.8 Network Interface Controller 5.8.3 Power Management Support 5.8.1 Wake-On-LAN Support5.8.2 Alert Standard Format Support 5.8.4 NIC Connector 5.8.5 NIC SpecificationsTable 5-11. NIC Specifications 6.1 Introduction Integrated Graphics Subsystem 6.2 Functional Description SDRAM Installed GMA 4500 Memory AllocationMaximum Memory Allocation 6.3 Display Modes 6.4 Upgrading 6.5.1 Analog Monitor Connector 6.5 Monitor Connectors Figure 6-3. DisplayPort Connector, as viewed from rear of chassis 6.5.2 DisplayPort Connector Technical Reference Guide Power and Signal Distribution 7.2 USDT Power Distribution7.1 Introduction Figure 7-2. SFF/CMT Power Distribution and Cabling, Block Diagram 7.3 SFF/CMT Power DistributionTable 7-1 lists the specifications of the external supply USDT 135-Watt Power Supply Unit Specifications CMT 320-Watt Power Supply Unit Specifications SFF 240-Watt Power Supply Unit Specifications 7.4.1 Power Button 7.4 Power Control Pre-video memory error. Incompatible or incorrectly seated Power LED IndicationsPower LED Power failure power supply is overloaded. Check storage Wake-On-LAN 7.5 Power Management7.4.2 Wake Up Events Power Management Event State System Power StatesPower Power Component function 7.6 Signal DistributionSystem Board Connector, Indicator, and Switch Designations Designator Figure 7-5 shows pinouts of headers used on the sytem boards Table 7-7. ContinuedFigure 7-3. System Board Header Pinouts 7-10 8.1 Introduction System BIOS 8.2 ROM Flashing 8.2.1 Upgrading8.2.2 Changeable Splash Screen 8.3.3 Memory Detection and Configuration 8.3 Boot Functions8.3.1 Boot Device Order 8.3.2 Network Boot F12 Support 8.3.4 Boot Error Codes 8.4 Client Management Functions 8.4.1 System ID and ROM Type 8.4.2 Temperature StatusSystem ID Numbers SMBIOS Functions 8.5 SMBIOS 8.7 Management Engine Functions 8.6 USB Legacy Support Error Messages and Codes A.2 Beep/Power LED CodesA.1 Introduction Error Messages and Codes A.3 Power-On Self Test POST Messages 1796-SATA Cabling Error Power-On Self Test POST MessagesError Message 1794--Inaccessible device attached to SATA 1801-Microcode Patch Error Error Messages and Codes A.4 System Error Messages A.5 Memory Error Messages Memory Error MessagesTable A-4 Message A.6 Keyboard Error MessagesMemory Error Messages Table A-4. Continued Int. test, LpBk. test., and cntrl. register failed A.7 Printer Error MessagesA.8 Video Graphics Error Messages Int. test, LpBk. test., and data register failed A.9 Diskette Drive Error Messages Table A-9 Serial Interface Error Messages A.10 Serial Interface Error Messages Table A-10 Modem Communications Error Messages A.11 Modem Communications Error Messages A.12 System Status Error Messages Cntlr. failed to deallocate bad sectors A.13 Hard Drive Error Messages xx = 00, Hard drive ID test xx = 01, Hard drive format test A.14 Hard Drive Error Messages Lightpen graphics test failed, no resp A.15 Video Graphics Error MessagesA.16 Audio Error Messages EGA Mono. graphics mode test failed A.18 Network Interface Error Messages A.17 DVD/CD-ROM Error Messages A.19 SCSI Interface Error Messages 65xx-xx, 66xx-xx MessageProbable Cause A.20 Pointing Device Interface Error Messages 8601-xx A-20 Numerics Index