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dc7900 motherboard manualThis page requires Javascript. Modify your browser's settings to allow Javascript to execute. See your browser's documentation for specific instructions. Click here Connect with HP support faster, manage all of your devices in one place, view warranty information and more. Learn more? Select from the products you own. Thus, the warranty has been removed from this product.Any warranty support needed would be completed by the third party that sold the product.Please use the product number and serial numbers of the new product to validate warranty status.Any warranty support needed would be completed by the reseller that sold the product.It matches the product: Please enter a Product Number to complete the request. Learn more about HP's privacy policy This process can take several minutes depending on the number of warranties being checked.We apologize for this inconvenience and are addressing the issue. Please try again shortly. HP Compaq dc7900 Desktop PC series The dc7900 has been engineered for the specific needs of business computing. From lengthy life cycles to stable hardware and software images, this platform delivers the latest in PC technology, qualified to HP’s highest standards; the dc7900 makes the most of your IT investment. A good fit for your business With three innovative form factors, you can choose the dc7900 model that best fits your work environment. Utilize the latest graphics and display technologies with standard dual monitor support via both VGA and DisplayPort interfaces. Increase manageability and reduce downtime Maximize productivity in your managed IT environment with secure PC and Lifecycle Management features. Achieve business results with targeted professional innovations for the dc7900 Series Built to simplify with 15-18 month long purchase lifecycles, image stability and a variety of client management solutions.http://www.gartenstadt-apotheke.com/userfiles/farmtrac-60-repair-manual.xml
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Proactive product change notifications give up to 60 advance notice of system or image changes which helps to minimize downtime. Built to protect with Drive Encryption for HP ProtectTools which helps ensure that your sensitive information cannot be accessed if the desktop or hard drive is lost or stolen. It encodes information on a hard drive volume so that it becomes unreadable to an unauthorized person. Built for efficiency as you can lower your operating costs by utilizing improved power saving technology such as 85 efficient power supplies and power management solutions. The HP Compaq dc7900 meets or exceeds most worldwide environmental PC standards.Page 2 HP Compaq dc7900 Desktop PC series. Form factor Convertible Minitower Small Form Factor Ultra-slim desktop. Page 3 HP Compaq dc7900 Desktop PC series. Recommended accessories and services. HP Compaq dc7800 Series Easily. Series Specs Purchase a Medialess License Kit (MLK) to activate the software.We delete comments that violate our policy, which we encourage you to read. Discussion threads can be closed at any time at our discretion. Please check your inbox, and if you can’t find it, check your spam folder to make sure it didn't end up there. Please also check your spam folder. This information may be used by engineers, technicians, administrators, or anyone needing detailed information on the products covered. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. This document describes in detail the system's design and operation for programmers, engineers, technicians, and system administrators, as well as end-users wanting detailed information.http://herbalnutritionshake.com/userfiles/farmtrac-665-service-manual.xml The appendices contain general data such as error codes and information about standard peripheral devices such as keyboards, graphics cards, and communications adapters. A color monitor will also allow the user to view the color shading used to highlight differential The serial number is also written into firmware and may be read with HP Diagnostics or Insight Manager utilities. Based on the Intel processor with the Intel Q45 Express chipset, these systems emphasize performance along with industry compatibility. These models feature a similar architecture incorporating both PCI 2.3 and PCIe 1.1 buses. All models are easily upgradeable and expandable to keep pace with the needs of the office enterprise. All systems covered in this guide include the following key components: The integrated graphics controller of the Q45 on SFF and CMT systems can be upgraded through a PCI Express (PCIe) x16 graphics slot. All systems include a serial ATA (SATA) hard drive in the standard configuration. Not accessible if PCI riser is installed. Intel processors with vPro Technology include hardware-based tools that allow corporate IT organizations to remotely manage and protect systems. The SFF and CMT form factors can support a processor rated up to 95 watts. Exceeding these limits can result in system damage and loss of data. Always use the same assembly or one of the same type when replacing the processor.Table 2-3 compares the functions provided by the chipsets. Some of these components also provide “housekeeping” and various other functions as well. Table 2-4 shows the functions provided by the support components. All models support DDR2 800and 667-MHz DIMMs. The USDT system provides two SODIMM sockets supporting up to eight gigabytes of memory while the SFF and CMT form factors provide four DIMM sockets and support a total of 16 gigabytes of memory. These systems provide the following interfaces for internal storage devices: The SFF and CMT form factors may be upgraded with a second serial port option.Two ports are accessible at the front of the unit, six ports are accessible on the rear panel, and two ports are accessible through a header on the system board. The SFF and CMT form factors support a media card reader module that connects to the internal header. These systems support USB 1.1 and 2.0 functionality on all ports. In order to secure the system against a physical attack, ports may be disabled even if there is nothing physically connected to them, such as the two front ports for the media card reader module when the module is not present. The controller provides automatic selection of 10BASE-T, 100BASE-TX, or 1000BASE-T operation with a local area network and includes power-down, wake-up, Alert-On-LAN (AOL), Alert Standard Format (ASF), and AMT features. An RJ-45 connector with status LEDs is provided on the rear panel. The controller implements Dynamic Video Memory Technology (DVMT 3.0) for video memory. Table 2-5 lists the key features of the integrated graphics subsystem. The DisplayPort includes a multimode feature that allows a DVI or VGA adapter to be connected to the DisplayPort. HD audio provides enhanced audio performance with higher sampling rates, refined signal interfaces, and audio processors with increased signal-to-noise ratio. The audio line input jack can be re-configured as a microphone input, and multi-streaming is supported. These systems include a 1.5-watt output amplifier driving an internal speaker, which can be muted with the F10 BIOS control. All models include front panel-accessible stereo microphone input and headphone output audio jacks. Where provided, metric statistics are given in parenthesis. Specifications are subject to change without notice. These systems support PC2-6400 and PC2-5300 DDR2 memory modules.The mounting socket allows the processor to be easily changed for upgrading. This feature allows instruction decoding to be removed from the main processing loop. However, address information is transferred using a 2x strobe while data is transferred with a 4x strobe, providing a maximum data transfer rate that is four times that of earlier processors. The Arithmetic Logic Units (ALUs) of all processors listed above run at twice the core speed. The heatsink and attachment clip are specially designed provide maximum heat transfer from the processor component. Although the system is designed to detect thermal conditions and automatically shut down, such a condition could still result in damage to the processor component. Refer to the applicable Service Reference Guide for processor installation instructions. The SFF and CMT form factors can support a processor with a maximum power consumption of 95 watts. Exceeding these limits can result in system damage and lost data. The USDT form factor supports up to eight gigabytes of memory while the SFF and CMT form factors support up to 16 gigabytes of memory. The XMM1 socket must be populated for proper support of Intel Active Management Technology (AMT). The BIOS will detect the module population and set the system accordingly as follows: These systems are shipped with non-ECC modules only. Changing memory modules while the unit is plugged into an active AC outlet could result in equipment damage. Addressing memory above 4 GB requires a 64-bit operating system. The Q45 Express chipset includes a Management Engine that pre-allocates a portion of system memory (16 MB for one module, 32 MB for two modules) for managment functions. In addition, the internal graphics controller pre-allocates a portion of system memory for video use (refer to chapter 6). Pre-allocated memory is not available to the operating system. The amount of system memory reported by the OS will be the total amount installed less the pre-allocated amount. Base memory is always mapped to DRAM. The next 128 KB fixed memory area can, through the north bridge, be mapped to DRAM or to PCI space. Graphics RAM area is mapped to PCI locations. This information may be used by engineers, technicians, administrators, or anyone needing detailed information on the products covered. Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and other countries. Intel, Intel Core 2 Duo, Intel Core 2 Quad, Pentium Dual-Core, Intel Inside, and Celeron are trademarks of Intel Corporation in the U.S. and other countries. Adobe, Acrobat, and Acrobat Reader are trademarks or registered trademarks of Adobe Systems Incorporated. This document describes in detail the system's design and operation for programmers, engineers, technicians, and system administrators, as well as end-users wanting detailed information. Page 8 Introduction 1.3 Serial Number The serial number is located on a sticker placed on the exterior cabinet. The serial number is also written into firmware and may be read with HP Diagnostics or Insight Manager utilities. 1.4 Notational Conventions The notational guidelines used in this guide are described in the following subsections. 1.4. Page 9 Introduction 1.5 Common Acronyms and Abbreviations Table 1-1 lists the acronyms and abbreviations used in this guide. Based on the Intel processor with the Intel Q45 Express chipset, these systems emphasize performance along with industry compatibility. Digital Mon. DisplayPort Switch Graphics Q45 SDRAM Cntlr. Table 2-3 compares the functions provided by the chipsets. Some of these components also provide “housekeeping” and various other functions as well. Table 2-4 shows the functions provided by the support components. Page 25 System Overview 2.3.5 Mass Storage All models support at least two mass storage devices, with one being externally accessible for removable media. These systems provide the following interfaces for internal storage devices: USDT: two SATA interfaces SFF: three SATA interfaces and one eSATA port CMT: four SATA interfaces and one eSATA port These systems may be preconfigured or upgraded with a SATA hard drive and one removable media drive such as a CD-ROM drive. 2.3. Page 26 System Overview 2.3.9 Graphics Subsystem These systems use the Q45 GMCH component, which includes an integrated graphics controller that can drive both an external VGA monitor and a DisplayPort digital display. The controller implements Dynamic Video Memory Technology (DVMT 3.0) for video memory. Table 2-5 lists the key features of the integrated graphics subsystem. Table 2-5 Integrated Graphics Subsystem Statistics Q45 GMCH Integrated Graphics Controller Recommended for Hi 2D, Entry 3D Bus Type Int. Page 27 System Overview 2.4 Specifications This section includes the environmental, electrical, and physical specifications for the systems covered in this guide. Where provided, metric statistics are given in parenthesis. Specifications are subject to change without notice. Table 2-6 Environmental Specifications (Factory Configuration) Parameter Operating Non-operating Ambient Air Temperature 50o to 95o F (10o to 35o C, max. These systems support PC2-6400 and PC2-5300 DDR2 memory modules. The mounting socket allows the processor to be easily changed for upgrading. 3.2.1 Intel Processor Overview The models covered in this guide support Intel Celeron, Pentium, and Core 2 processors, including the latest Intel Core 2 Duo, and Core 2 Quad processors. The heatsink and attachment clip are specially designed provide maximum heat transfer from the processor component. The USDT form factor supports up to eight gigabytes of memory while the SFF and CMT form factors support up to 16 gigabytes of memory. DDR SDRAM “PCxxxx” reference designates bus bandwidth (i.e., a PC2-5300 module can. Base memory is always mapped to DRAM. Bridge Integrated Graphics Cntlr. A bus master is a device that has been granted control of the bus for the purpose of initiating a transaction. A target is a device that is the recipient of a transaction. The Request (REQ), Grant (GNT), and FRAME signals are used by PCI bus masters for gaining access to the PCI bus. Page 40 System Support Link Layer The link layer provides data integrity by adding a sequence information prefix and a CRC suffix to the packet created by the transaction layer. Flow-control methods ensure that a packet will only be transferred if the receiving device is ready to accomodate it. A corrupted packet will be automatically re-sent. A maskable interrupt can be enabled or disabled within the microprocessor by the use of the STI and CLI instructions. Page 45 System Support 4.4 Real-Time Clock and Configuration Memory The Real-time clock (RTC) and configuration memory (also referred to as “CMOS”) functions are provided by the 82801 component and is MC146818-compatible. As shown in the following figure, the 82801 ICH10 component provides 256 bytes of battery-backed RAM divided into two 128-byte configuration memory areas. The RTC uses the first 14 bytes (00-0Dh) of the standard memory area. Page 46 System Support 4.4.2 Standard CMOS Locations Table 4-6 describes standard configuration memory locations 0Ah-3Fh. The jumper controls a GPIO input to the 82801 ICH10 that is checked during POST. The password is stored in configuration memory (CMOS) and if enabled and then forgotten by the user will require that either the password be cleared (preferable solution and described below) or the entire CMOS be cleared (refer to section 4.4.1). Page 48 System Support Level 0—Cover removal indication is essentially disabled at this level. During POST, status bit is cleared and no other action is taken by BIOS. Level 1—During POST the message “The computer's cover has been removed since the last system start up” is displayed and time stamp in CMOS is updated. Page 50 System Support The RPM (speed) of all fans is the result of the temperature of the CPU as sensed by speed control circuitry. The fans are controlled to run at the slowest (quietest) speed that will maintain proper cooling. The eSATA interface provides higher bandwidth than USB 2.0 and Firewire (1394) interfaces. The parallel interface supports bi-directional 8-bit parallel data transfers with a peripheral device. The operation of the interface (clock and data signal control) is the same as for the keyboard. The support firmware is contained in the system (BIOS) ROM. The NIC can operate in half- or full-duplex modes, and provides auto-negotiation of both mode and speed. The NIC receives 3.3 VDC auxiliary power while the system unit is powered down in order to process special packets. This connector includes the two status LEDs as part of the connector assembly. RJ-45 Ethernet TPE Connector (as viewed from rear of chassis) 5.9.5 NIC Specifications Table 5-12. Page 71 6 Integrated Graphics Subsystem 6.1 Introduction This chapter describes the graphics subsystem that is integrated into the Q45 GMCH component. This graphics subsystem employs the use of system memory to provide efficient, economical 2D and 3D performance. All systems provide dual-monitor support in the standard configuration. Page 72 Integrated Graphics Subsystem 6.2 Functional Description The Intel Q45 GMCH component includes an Intel integrated Graphics Media Accelerator (GMA) 4500 controller (Figure 6-1). The GMA 4500 operates off the internal PCIe x16 bus and can directly drive an external, analog multi-scan monitor and a DisplayPort-compatible digital monitor simultaneously. Page 73 Integrated Graphics Subsystem The GMA 4500 uses a portion of system memory for instructions, textures, and frame (display) buffering. Using a process called Dynamic Video Memory Technology (DVMT), the controller dynamically allocates display and texture memory amounts according to the needs of the application running on the system. The total memory allocation is determined by the amount of system memory installed in a system. The video BIOS pre-allocates 8 megabytes of memory during POST. Page 74 Integrated Graphics Subsystem 6.3 Display Modes The GMA supports the following standard display modes for 2D video displays: Table 6-2. Page 75 Integrated Graphics Subsystem 6.4 Upgrading All systems provide direct, dual-monitor support; a VGA montor and a DisplayPort monitor can be connected and driven simultaneously. The SFF and CMT systems also include a PCIe x16 graphics connector that specifically supports a PCIe x16 graphics card and a PCIe x16 connector that provides PCIe x4 operation for an x4 or x16 PCIe card. These two PCIe slots provide the SFF and CMT form factors with flexible graphics upgrade paths. Page 76 Integrated Graphics Subsystem 6.5 Monitor Connectors All form factors provide an analog VGA connector and a DisplayPort connector, and can drive both types of monitors simultaneously. 6.5.1 Analog Monitor Connector All form factors include a legacyVGA connector (Figure 6-2) for attaching an analog video monitor: Figure 6-2. DB-15 Analog VGA Monitor Connector, (as viewed from rear of chassis). Table 6-3. Page 77 Integrated Graphics Subsystem 6.5.2 DisplayPort Connector All systems include a DisplayPort connector (Figure 6-3) for attaching a digital monitor. This interface also supports the use of an optional adapter for converting the DisplayPort output to a DVI or analog VGA output. Figure 6-3. DisplayPort Connector, (as viewed from rear of chassis). Table 6-4. Page 78 Integrated Graphics Subsystem 6-8 www.hp. Page 79 7 Power and Signal Distribution 7.1 Introduction This chapter describes the power supplies and discusses the methods of general power and signal distribution. When the PS On signal is asserted, all DC voltages are produced. These events can be individually enabled through the Setup utility to wake up the system from a sleep (low power) state. Wake-up functionality requires that certain circuits receive auxiliary power while the system is ? turned off. Page 87 Power and Signal Distribution 7.3.3 Power Management These systems include power management functions designed to conserve energy. These functions are provided by a combination of hardware, firmware (BIOS) and software. The system BIOS includes such functions as Power-On Self Test (POST), PCI device initialization, Plug 'n Play support, power management activities, and the Setup utility. Page 93 SYSTEM BIOS 8.3 Boot Functions The BIOS supports various functions related to the boot process, including those that occur during the Power On Self-Test (POST) routine. 8.3.1 Boot Device Order The default boot device order is as follows: 1. CD-ROM drive (EL Torito CD images) 2. Diskette drive (A:) 3. USB device 4. Hard drive (C:) 5. Network interface controller (NIC) above order assumes all devices are present in the initial configuration. Page 94 SYSTEM BIOS The BIOS performs memory detection and configuration with the following steps: 1. Program the buffer strength control registers based on SPD data and the DIMM slots that are populated. 2. Determine the common CAS latency that can be supported by the DIMMs. 3. Determine the memory size for each DIMM and program the GMCH accordingly. 4. Enable refresh. 8.3. Page 95 SYSTEM BIOS 8.4 Client Management Functions Table 8-2 provides a partial list of the client management BIOS functions supported by the systems covered in this guide. This function will return the system ID in the BX register. Page 97 SYSTEM BIOS 8.5 SMBIOS In support of the DMI specification, PnP functions 50h and 51h are used to retrieve the SMBIOS data. Function 50h retrieves the number of structures, size of the largest structure, and SMBIOS version. Function 51h retrieves a specific structure. This system supports SMBIOS version 2. Page 98 SYSTEM BIOS 8.6 USB Legacy Support The system BIOS ROM checks the USB port, during POST, for the presence of a USB keyboard. This allows a system with only a USB keyboard to be used during ROM-based setup and also on a system with an OS that does not include a USB driver. Page 99 A Error Messages and Codes A.1 Introduction This appendix lists the error codes and a brief description of the probable cause of the error. Beep and Power LED indictions listed in Table A-1 apply only to HP-branded models. Table A-1. Page 100 Error Messages and Codes A.3 Power-On Self Test (POST) Messages Table A-2. Power-On Self Test (POST) Messages A-2 Error Message Probable Cause Invalid Electronic Serial Number Chassis serial number is corrupt. Use Setup to enter a valid number. Page 101 Error Messages and Codes Table A-2. (Continued) Power-On Self Test (POST) Messages Error Message Probable Cause 514-CPU or Chassis Fan not detected. CPU fan is not connected or may have malfunctioned. 601-Diskette Controller Error Diskette drive removed since previous boot. 605-Diskette Drive Type Error Mismatch in drive type. 912-Computer Cover Removed Since Last System Start Up Cover (hood) removal has been detected by the Smart Cover Sensor. Page 102 Error Messages and Codes Table A-2. (Continued) Power-On Self Test (POST) Messages A-4 Error Message Probable Cause 1801-Microcode Patch Error A processor is installed for which the BIOS ROM has no patch. Check for ROM update. Invalid Electronic Serial Number Electronic serial number has become corrupted. Network Server Mode Active and No Keyboard Attached Keyboard failure while Network Server Mode enabled. Page 109 Error Messages and Codes A.11 Modem Communications Error Messages (12xx-xx) Table A-10. Page 110 Error Messages and Codes Table A-10. Page 111 Error Messages and Codes A.13 Hard Drive Error Messages (17xx-xx) Table A-12 Hard Drive Error Messages Message Probable Cause Message Probable Cause 17xx-01 Exceeded max. Imagine that this responsive data-sheet is included in the product page of your webshop. How to integrate Icecat LIVE JavaScript. A manufacturer can have multiple brand names. Some manufacturers license their brand names to other producers. Product name is a key part of the Icecat product title on a product data-sheet. Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. We map away wrong codes or sometimes logistic variants. They always have the following components:- A processor (CPU), this is the heart of your computer, where the data processing is done.- Memory (RAM), this is very fast memory in which temporary data is stored before being processed by the processor.- Motherboard, this is the component that connects all the different parts of your computer. Often it has some integrated components like a sound card, enabling your computer to play sound, or a network card, to connect your computer to the network.- Video board, this is the part of your computer that is responsible for the graphics processing. Micro ATX motherboards often have an integrated video board.But the data-sheet is not yet standardized by an Icecat editor.Stable platform lowers your cost of ownership: - A minimum of 15 months of platform purchase stability enables customers to conduct long-range transition planning and maintain a consistent work environment which helps minimize IT support costs. Superior manageability features: - Combining technologies from HP, Altiris, and Intel, the dc7900 provides IT managers a full range of remote management capabilities which lower maintenance costs and protect the network’s assets. Standard dual monitor support: - Efficiently multi-task with simplified integrated dual monitor support through a standard VGA connector and a DisplayPort, the newest monitor interface supporting today’s digital graphics and LCD technologies. Energy efficiency: - Designed to help reduce energy costs and environmental impact through the use of the latest low wattage processors and software power management tools, as well as efficiently designed cooling systems and power supplies. Virtualization you can use: - Firefox-HP Virtual Browser is a virtualization tool you can use to reverse unwanted effects of browsing and downloading from the internet. It runs in a virtualized run-time environment allowing you to clear the web-content that makes it to your PC. Global services and support: - The HP Compaq dc7900 is backed by HP’s world-class global services and support portfolio including Total Care, and a worldwide network of partners to help you get the most out of your technology investment. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 800 MHz. Operating system installed: Windows Vista Business. Power supply: 365 W. Chassis type: Mini Tower. Product type: PC. Weight: 11.8 kg Please contact your account manager at Icecat. Some processors have 1 core, others have 2 (e.g. Intel Core Duo) or more (e.g. the Intel Xeon E7-2850 has 10 cores). The CPU requires a fixed number of clock ticks, or cycles, to execute each instruction. The faster the clocks rate, the faster the CPU, or the faster it can execute instructions. Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second, or in GHz, 1 GHz representing 1 thousand million cycles per second. The higher the CPU speed, the better a computer will perform. This allows the processor to be replaced without soldering. This design allows the operating system to run with more privileges than application software. Some types of optical drive are: CD ROM drive, CR-RW (CD writer) drive, DVD-ROM. The faster the better. A discrete graphics adapter plugs into the motherboard, and usually produces much better graphics than an integrated graphics adapter. There are various models of discrete graphics adapters. The VGA (D-Sub) connector is a 15 pin connector between a computer and a monitor. It was first introduced in 1987 by IBM. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet. A serial port is a serial communication physical interface through which information transfers in or out one bit at a time. In modern computers and peripherals, serial ports have largely been replaced by USBs and other interfaces. A software suite is an example of bundled software, as is software which is pre-installed on a new computer. Optional preloaded software (one or more options possible), only for certain configurations: Microsoft Office 2007 Basic, Microsoft Office 2007 Professional, Microsoft Office 2007 Small Business, Microsoft Internet Explorer with Google Toolbar, Windows Vista Business Recovery kit Stream family favorites and view personal experiences while turning your device’s small screen into a superior, sharable experience. Now you can play games and watch your favorite 3D movies with Blu-ray Stereo 3D playback using passive or active shutter 3D glasses.Intel AES-NI supports usages such as standard key lengths, standard modes of operation, and even some nonstandard or future variants. Virtualization allows multiple workloads to share a common set of resources so that a variety of workloads can co-locate while maintaining full isolation from each other. Virtualization allows multiple workloads to share a common set of resources so that a variety of workloads can co-locate while maintaining full isolation from each other. The maximum frequency varies depending on workload, hardware, software, and overall system configuration.