HP dc73 Service Reference Guide - HP Compaq dc7800 Business PC
HP dc73 - Blade Workstation Client Manual
View all HP dc73 manuals
Add to My Manuals
Save this manual to your list of manuals |
HP dc73 manual content summary:
- HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 1
Service Reference Guide HP Compaq dc7800 Business PC - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 2
HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP . Service Reference Guide Business PCs First Edition (September 2007) Document Part Number: 459784-001 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 3
About This Book WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life. CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information. NOTE: Text set - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 4
iv About This Book - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 5
or Upgrading Device Drivers 1 HP Backup and Recovery Desktop Management Initial Configuration and Deployment 21 HP OpenView Agent ...22 Altiris Deployment Solution Agent 22 Verdiem Surveyor Client Side Installation 23 Remote System Installation ...23 Software Updating and Management 24 HP - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 6
Single Computer 33 Copying to Multiple Computers 34 Creating a Bootable Device 35 Supported USB Flash Media Device 35 Unsupported USB Flash Media Device 36 Dual-State Power Button ...37 HP Web Site Support ...38 Industry Standards ...38 Asset Tracking and Security ...38 Password Security ...41 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 7
...50 6 Identifying the Chassis, Routine Care, and Disassembly Preparation Chassis Designations ...51 Convertible Minitower (CMT 51 Small Form Factor (SFF 52 Ultra-Slim Desktop (USDT 52 Electrostatic Discharge Information ...53 Generating Static ...53 Preventing Electrostatic Damage to Equipment - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 8
Fan ...96 Serial Port ...97 Power Supply ...98 System Board ...99 Battery ...100 Type 1 Battery Holder ...101 Type 2 Battery Holder ...101 Type 3 Battery Holder ...102 Changing from a Desktop to a Minitower Configuration 103 Changing from a Minitower to a Desktop Configuration 105 8 Removal - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 9
Ultra-Slim Desktop (USDT) Chassis Preparation for Disassembly ...159 External Security Devices ...160 Cable Lock ...160 HP Business PC Security Lock 161 Computer Access Panel ...163 Front Bezel ...164 Bezel Blanks ...165 Memory ...174 Hard Drive Cage ...178 Port Cover ...179 ReadyBoost Card ...180 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 10
203 Country-Specific Requirements ...204 Appendix C POST Error Messages POST Numeric Codes and Text Messages 206 Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 212 Appendix D Troubleshooting Without Diagnostics Safety and Comfort ...216 Before You Call for Technical Support 216 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 11
Problems ...239 Solving Memory Problems ...242 Solving Processor Problems ...244 Solving CD-ROM and DVD Problems 244 Solving Drive Key Problems ...247 Solving Front Panel Component Problems 247 Solving Internet Access Problems ...248 Solving Software Problems ...250 Contacting Customer Support - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 12
xii - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 13
. Carefully read and follow the instructions on the screen to complete the drivers. Obtain the latest support software , including support software for the operating system from http://www.hp.com/support. Select your country and language, select Download drivers and software, enter the model number - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 14
click Next. 3. Follow the instructions in the wizard. The HP Backup and Recovery Manager provides HP Backup and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. NOTE: You can order a Recovery Disc Set from HP by calling the HP support - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 15
processor, graphics, memory, audio, storage does not run all of the diagnostic tests run during a Full Boot. messages, such as memory count, product name the mode selected. To manually switch to Post Messages Tag or property identification number assigned by the company serial, USB, or parallel ports, - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 16
drive (when supported by drive). ● Enable or disable DriveLock security (when supported by drive as the computer is turned on, press F10 when the monitor light turns green to enter Computer Setup. Press Enter to NOT turn the computer power OFF while the BIOS is saving the Computer Setup (F10) changes - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 17
have this listed twice) ● Installed memory size/speed, number of channels (single or dual) (if applicable) ● Integrated MAC address for embedded, enabled NIC (if applicable) ● System BIOS (includes family name and version) ● Chassis serial number ● Asset tracking number ● ME firmware version ● ME - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 18
Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-3 Computer Setup-Storage Option Description Device Configuration Lists all installed BIOS be used for the device. This enables the BIOS to access disks partitioned and formatted on other systems - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 19
Write, the computer will restart. Turn the computer off, then on, manually. SATA Emulation Allows you to choose how the SATA controller and devices are accessed by the operating system. There are two supported options: IDE and RAID. IDE is the default option. Use this option for "normal" (non - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 20
Support for specific . See the Troubleshooting Guide for more information supported on some models only. See the Desktop Management Guide for more information. Device Security Allows you to set Device Available/Device Hidden for ● Serial ports ● Parallel port ● All USB ports ● Front USB ports - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 21
(some models) Network Service Boot Enables/disables the Desktop Management Guide for more information. ● Chassis serial number or Universal Unique Identifier (UUID) number. The UUID can only be updated if the current chassis serial number is invalid. (These ID numbers needed to support a virtual - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 22
VA 3.0 configuration interfaces. Smart Card BIOS Password Support (some models) (enable/disable) Allows the user to enable/ disable the Smart Card to be used in place of the Setup and Power-On Passwords. This setting requires additional initialization within HP - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 23
NOTE: Support for specific Computer ACPI S3 Hard Disk Reset-Enabling this causes the BIOS to ensure hard disks are ready to accept commands S5 both have the LED off. S1 (no longer supported) and S3 use 1 blink per second. Hardware Power Management SATA power management enables or disables SATA - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 24
NOTE: Support for specific Computer Setup displayed. However, pressing Ctrl+P still accesses the ME BIOS Extension Setup Utility, which is used to configure manageability still attempt to boot to the HP Backup and Recovery partition. See Factory Recovery Boot Support for more information. ● F12 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 25
the POST memory test. (some models) BIOS Power-On Allows you to set the computer to turn on automatically at a time you specify. Onboard Devices PCI Devices Allows you to set resources for or disable onboard system devices (diskette controller, serial port, or parallel port). ● Lists currently - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 26
Video. When PCI Express video is on, Integrated Video must remain disabled. ● Multi-Processor (enable/disable). This option may be used to disable multi-processor support under the OS. ● Internal speaker (some models) (enable/disable) ● Monitor Tracking (enable/disable). Allows BIOS to save - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 27
Support Center. NOTE: Third party devices may not be detected by HP Insight Diagnostics. Accessing HP Insight Diagnostics To access HP Insight Diagnostics the instructions in the wizard to create a Recovery Disc Set. 4. Use Windows Explorer to search the Recovery Disc Set for the CD with the compaq\ - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 28
about the computer. Architecture-Provides system BIOS and PCI device information. Asset Control-Shows product name, asset tag, system serial number, and processor information. Communication-Shows information about the computer parallel (LPT) and serial (COM) port settings, plus USB and network - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 29
The Custom Test mode allows you to specifically select which devices, tests, and test a specified number of loops, enter the number of loops to perform. If you desire to have the diagnostic test for . The Status tab, which allows you to monitor the progress of the test, is automatically displayed - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 30
describes the error that the diagnostic test found. ● The Recommended Repair will give a recommended action that should be performed to resolve the failed hardware. ● The Failed Count is the number of times the device has failed a test. ● The Error Code provides a numerical code for the failure. The - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 31
HP Drive Key (capacity must be 64MB or higher). USB 1.0 Drive Keys are not supported. HP Insight Diagnostics 1. Go to http://www.hp.com. 2. Click the Software & Driver Downloads link. 3. Enter your product number (for example, dc7800) in the text box and press the Enter key. 4. Select your specific - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 32
click Next. 3. Follow the instructions in the wizard. The HP Backup and Recovery Manager provides HP Backup and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. NOTE: You can order a Recovery Disc Set from HP by calling the HP support - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 33
of desktop management are: ● Initial configuration and deployment ● Remote system installation ● Software updating and management ● ROM flash ● Hardware option configuration ● Asset tracking and security ● Fault notification and recovery NOTE: Support for specific features described in this guide - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 34
OpenView Agent: 1. Click Start. 2. Click All Programs. 3. Click HP Manageability. 4. Click Radia Management Agent Readme. 5. Review and follow the instructions contained in the Readme file to install the HP OpenView Agent. The HP OpenView Agent is a key infrastructure component for enabling all of - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 35
click Next. 4. Type in the server name, port, an a preferred group (optional), and then click Service Boot message appears in the lower-right corner of the HP logo screen when the computer is booting up. Follow the instructions on the screen to continue the process. The default boot order is a BIOS - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 36
updating software on desktops, workstations, and notebooks: ● HP Client Management Interface ● HP System Software Manager ● HP Client Manager ● HP ProtectTools Security Manager ● HP Client Premium Suite ● HP Client Foundation Suite ● HP your business agile. The IT administrator can access the HP - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 37
the hardware aspects of HP client systems. Use HP Client Manager to: ● Get valuable hardware information such as CPU, memory, video, and security settings ● Monitor system health to fix problems before they occur ● Automatically acquire and install drivers and BIOS updates without visiting each PC - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 38
● Remotely configure BIOS and security settings ● Automate processes to quickly resolve hardware problems Tight integration with HP Instant Support tools reduces hardware troubleshooting time. ● Diagnostics-remotely run & view reports on HP desktop, notebook, and workstation models ● System Health - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 39
editions: ● The Basic Edition is a free product for managing HP desktops, notebooks and workstations, providing hardware and software inventory, remote control, HP alert monitoring, HP BIOS and driver updates, integration with HP Protect Tools and add-on support for Intel AMT. The Basic Edition also - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 40
HP now offers a mechanism to streamline updates for HP systems within a Microsoft System Management Server management infrastructure. The HP Client Catalog for SMS contains software driver and patch information for desktop manually. Important files can be archived separately from regular backups. HP - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 41
click Next. 3. Follow the instructions in the wizard. The HP Backup and Recovery Manager provides HP Backup and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. NOTE: You can order a Recovery Disc Set from HP by calling the HP support - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 42
. For HP-specific information on Intel vPro technology, see the white papers at http://www.hp.com/ support. Select your country and language, select See support and troubleshooting information, enter the model number of the computer, and press Enter. In the Resources category, click Manuals (guides - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 43
the ROM from being unintentionally updated or overwritten. This is important to ensure the operating integrity of the computer. Should you need or want to upgrade the BIOS, you may download the latest BIOS images from the HP driver and support page, http://www.hp.com/support/files. ROM Flash 31 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 44
/ssm/. HPQFlash The HPQFlash utility is used to locally update or restore the system BIOS of individual PCs from a Windows operating system. For more information on HPQFlash, visit http://www.hp.com/support/files and enter the model number of the computer when prompted. Boot Block Emergency Recovery - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 45
device containing the desired BIOS image file in the supported USB flash media device, such as an HP Drive Key. Copying to Single Computer CAUTION: A setup configuration is model-specific , press F10 when the monitor light turns green to enter Removable Media. Follow the instructions on the screen to - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 46
or USB flash media device. 8. Download a BIOS utility for replicating setup (repset.exe) and copy it onto the configuration diskette or USB flash media device. To obtain this utility, go to http://welcome.hp.com/country/us/en/ support.html and enter the model number of the computer. 9. On the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 47
Supported USB Flash Media Device Supported devices have a preinstalled image to simplify the process of making them bootable. All HP or Compaq flash media device, do not proceed. Data loss can occur. Check all USB ports for additional storage devices. If any are found, remove them, reboot the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 48
the system that have SCSI, ATA RAID or SATA drives attached, turn off the computer and unplug the power cord. CAUTION: The power cord MUST be unplugged. 2. Open the computer and remove the PCI cards. 3. Insert the USB flash media device into one of the computer's USB ports and remove all other USB - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 49
and again press F10 when the monitor light turns green to access the utility. 6. Go to Advanced > PCI Devices to disable both the PATA ) Utility. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for instructions. If you have used a DOS version from Windows 9x - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 50
and hold the power button for four seconds. CAUTION: Do not use the power HP Web Site Support HP engineers rigorously test and debug software developed by HP and third-party suppliers, and develop operating system specific support software, to ensure performance, compatibility, and reliability for HP - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 51
. See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD included with the computer for additional information and instructions on using the Computer Setup Utilities. Some computers also have BIOS Configuration for HP ProtectTools, which is a Windows-based component - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 52
feature is supported on some models only. See the HP ProtectTools Security Manager Guide at http://www.hp.com Device Security Enables/disables serial ports, parallel port, front USB ports, system audio, network controllers (some models), and SCSI controllers (some models). Network Service Boot - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 53
turned on or restarted. The setup password specifically prevents unauthorized access to Computer Setup, and to the HP ProtectTools Security Manager Guide at http://www.hp.com. monitor light turns green to access the utility. 3. Select Security, then select Setup Password and follow the instructions - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 54
Guide at http://www.hp.com. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. 2. To change the Power-On password, go to step 3. To change the Setup password, as soon as the computer is turned on, press F10 when the monitor 4 Desktop Management - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 55
you must restart the computer and again press F10 when the monitor light turns green to access the utility. 3. When the Each keyboard is designed to meet country-specific requirements. The syntax and keys that you the Troubleshooting Guide on the Documentation and Diagnostics CD for instructions on - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 56
Guide at http://www.hp.com. DriveLock DriveLock is an industry-standard security feature that prevents unauthorized access to the data on ATA hard drive. DriveLock has been implemented as an extension to Computer Setup. It is only available when hard drives that support will be instructed to cycle - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 57
Setup, see the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD. Setting the Smart Cover Sensor Protection Restart. 2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter Computer Setup. Press Enter to bypass the title screen, if - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 58
press F10 when the monitor light turns green to HP reseller or service provider. ● Call the appropriate number listed in the warranty. For more information about using the Smart Cover FailSafe Key, consult the Hardware Reference Guide on the Documentation and Diagnostics CD. 46 Chapter 4 Desktop - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 59
run, test results are written to the hard drive. The service provider can use this information to help diagnose conditions that caused you to run the DPS software. Refer to the Troubleshooting Guide on the Documentation and Diagnostics CD for instructions on using DPS. Surge-Tolerant Power Supply An - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 60
Parallel ATA Drive Guidelines and Features NOTE: Serial ATA = SATA Parallel ATA = PATA SATA Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length Data interface voltage differential Drive voltages Jumpers - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 61
fully backwards compatible with the SATA 1.5 Gb/s drives. Current HP desktop products ship with SATA 3.0 Gb/s hard drives. SATA data cables in the table, each cable has 3 grounds, and 4 transmit/receive pins. Pin Number Usage P1 Ground P2 A+ P3 A- P4 Ground P5 B- P6 B+ P7 Ground P2 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 62
USDT model is the only product that supports a PATA optical drive. No PATA drives are supported on any other model. ATA SMART Drives The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP a number of specification Serial and Parallel ATA Drive Guidelines and Features - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 63
service. CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. Chassis Designations Convertible Minitower (CMT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 64
Small Form Factor (SFF) Ultra-Slim Desktop (USDT) 52 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 65
Electrostatic Discharge Information A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 66
dissipative surfaces. ● Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam. ● Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive. Recommended Materials and Equipment Materials and equipment that are recommended - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 67
hard tie to ground ● Field service kits ● Static awareness labels ● on all vented sides of the computer and above the monitor to permit the required airflow. ● Never restrict the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow. ● Occasionally clean - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 68
the keyboard body, follow the procedures described in Cleaning the Computer Case on page 56. When cleaning debris from under the keys, review all rules in General Cleaning Safety Precautions on page 56 before following these procedures: CAUTION: Use safety glasses equipped with side shields before - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 69
a component. Never use solvents or flammable liquids on the monitor. ● To clean the monitor body follow the procedures in Cleaning the Computer Case on page Tools and Software Requirements To service the computer, you need the following: ● Torx T-15 screwdriver (HP screwdriver with bits, PN 161946- - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 70
the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly parts being removed or replaced. CAUTION: When servicing this computer, ensure that cables are placed in magnetic fields such as monitors or speakers. 58 Chapter 6 Identifying the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 71
appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures. WARNING! This computer contains a lithium battery. There is system or return them to HP, their authorized partners, or their agents. Service Considerations 59 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 72
7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 73
the lock. Refer to the Desktop Management Guide for more information about the Smart Cover Lock. If you cannot access Computer Setup to unlock the cover you will need to remove the locking solenoid by using the Smart Cover FailSafe Key (Spare part number - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 74
to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. 62 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 75
Hood Sensor 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the access panel (Computer Access Panel on page 64). 3. Disconnect the hood sensor cable from the system board. 4. Slide the hood sensor switch toward the front of the computer (1), and then pull - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 76
(1/2 inch), and then lift it up and off the unit (2). To install the access panel, reverse the removal procedure. 64 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 77
Front Bezel 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access panel (Computer Access Panel on page 64). 3. Push up on the two release tabs (1), and then rotate the front bezel away from the chassis to release it (2). To reinstall the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 78
proper orientation. The logo in the subpanel should be located at the bottom of the subpanel when properly oriented. 66 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 79
when working inside the computer. ● Keep cables away from major heat sources like the heatsink. ● Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not designed to take excessive pressure on them. ● Keep cables clear of sliding or moveable parts to - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 80
System board connectors are color-coded to make it easier to find I/O USB cable Front I/O audio P6, SPKR P52, SERIAL B P124, HLCK P125, HSENSE Internal speaker Serial port Hood lock solenoid Hood sensor P150, MEDIA CARD Media and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 81
sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 8 GB of memory configured in a highperforming dual channel mode. For proper system operation, the DDR2-SDRAM DIMMs must be: ● industry-standard 240-pin - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 82
In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. For optimal speed before touching. 70 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 83
closed position (3). 5. Repeat steps 3 and 4 for any additional modules that you want to install. NOTE: The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. NOTE: If you normally lock the Smart Cover - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 84
PCI Express x1 expansion slot PCI Express x1 expansion slot PCI expansion slot PCI expansion slot PCI expansion slot NOTE: You can install a PCI Express x1, x4, x8, or x16 expansion card in the PCI Express x16 expansion slot. To remove, replace, or add Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 85
4. Press straight down on the two green thumb tabs inside the chassis (1) and rotate the expansion card retention latch up (2). 5. Before installing an expansion card, remove the expansion slot cover or the existing expansion card. NOTE: Before removing an installed expansion card, disconnect any - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 86
it. Be sure not to scrape the card against other components. c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card components during operation. 74 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 87
8. To install a new expansion card, slide the bracket on the end of the card down into the slot on the back of the chassis and press the card down firmly into the socket on the system board. NOTE: When installing an expansion card, press firmly on the card so that the whole connector seats properly - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 88
black. The HPsupplied 6-32 isolation mounting guide screws are silver and blue. 6-32 isolation mounting screws for the hard drive (shown below). M3 metric screws for all drives other than hard drives (shown below). 76 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 89
Do not use excessive force when inserting a drive. Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers. If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the package - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 90
System Board Label SATA0 SATA1 SATA4 SATA5 MEDIA CARD FLOPPY Color dark blue white light blue orange black black 78 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 91
drive mounting bracket for these drive bays is available from HP. The bottom 5.25-inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a half-height drive or other device that is no Setup. Refer to the Computer Setup (F10) Utility Guide for more information. Drives 79 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 92
hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). of the fan shroud. 80 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 93
old drive and install them in the replacement drive. NOTE: Extra 6-32 isolation guide screws are provided on the hard drive bracket under the access panel. Optical drives use M3 metric screws. The HP-supplied metric screws are black. 8. Store the removed drive in anti-static packaging. 9. Install - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 94
Disc Set to restore the operating system, software drivers, and any software applications that were preinstalled on the computer. If you do not have this CD set, select Start > HP Backup and Recovery and create it now. 1. Unlock the Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 95
3. Remove the adhesive strip that secures the thermal sensor to the top of the hard drive (1) and move the thermal sensor away from the carrier (2). 4. Remove the four screws from the bottom of the hard drive carrier. Drives 83 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 96
the connector on the hard drive is pressed all the way into the connector on the carrier's circuit board. 84 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 97
7. Replace the four screws in the bottom of the carrier to hold the drive securely in place. 8. Place the thermal sensor on top of the hard drive in a position that does not cover the label (1) and attach the thermal sensor to the top of the hard drive with the adhesive strip (2). Drives 85 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 98
with the key provided. NOTE: The carrier must be locked for power to be supplied to the hard drive. 86 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 99
use M3 metric guide screws. Eight extra metric guide screws are provided on the diskette drive bracket under the access panel. The HP-supplied metric inch drive bay has a shorter depth than the upper two bays. The bottom bay supports a half-height drive or other device that is no more than 14.5 cm - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 100
first optical drive to the white SATA connector on the system board labeled SATA1. Connect a second optical drive to the orange SATA connector labeled SATA5. If you are installing a diskette drive labeled MEDIA CARD. 88 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 101
ReadyBoost Card A ReadyBoost card is installed in the computer. The card is secured to the chassis, and a cable connects the card to the system board. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access panel (Computer Access Panel on page - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 102
wire through the holes in the chassis. To reinstall the front I/O device and power switch, reverse the removal procedure. 90 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 103
Fan Shroud 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access panel (Computer Access Panel on page 64). 3. Pull up on all four shroud tabs simultaneously and slide the shroud from the heatsink. To reinstall the fan shroud, reverse the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 104
the pins on the socket are very fragile and any damage to them may require replacing the system board. 92 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 105
Processor 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access panel (Computer Access Panel on page 64). 3. Remove the heatsink (Heatsink on page 92). 4. Rotate the locking lever to its full open position (1). 5. Raise and rotate the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 106
update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support reverse the removal procedures. 94 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 107
Rear Chassis Fan 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access panel (Computer Access Panel on page 64). 3. Disconnect the fan control cable from the system board. 4. Press down on the two upper tabs (1) to loosen the fan housing from - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 108
unit. Refer to the air flow arrows on the side of the fan housing for proper air flow orientation. 96 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 109
64). 3. Push down the green tabs (1), and then rotate the tab back 90 degrees out of the rear of the chassis (2). 4. Disconnect the serial port cable from the system board (3). 5. Remove the port assembly from the chassis (4). To install the serial port, reverse the removal procedure. Serial Port 97 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 110
(3), and then lift the power supply out of the chassis (4). To install the power supply, reverse the removal procedure. 98 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 111
the front of the computer (2). 8. Lift the system board out of the computer (3). NOTE: When replacing the system board, you must also change the chassis serial number in the BIOS. System Board 99 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 112
Utility Guide for information on backing up the CMOS settings. NOTE: HP encourages customers to recycle used electronic hardware, HP original board, complete the following instructions to replace the battery: 100 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 113
on power to the computer. 6. Reset the date and time and any special system setups using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp (1) that extends above one edge of the battery. When the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 114
and any special system setups using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Type 3 Battery Holder 1. Pull back on the clip (1) that holds the battery in Computer Setup (F10) Utility Guide. 102 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 115
Changing from a Desktop to a Minitower Configuration 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access inserted, the drivelock will secure it. Repeat this step for each drive. Changing from a Desktop to a Minitower Configuration 103 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 116
than the upper two bays. The bottom bay supports a half-height drive or other device that is minitower configuration. 11. Reposition the subpanel (rotate it 90º) with the logo at the bottom, then snap it back into the bezel. 104 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 117
Changing from a Minitower to a Desktop Configuration 1. Prepare the computer for disassembly (Preparation for Disassembly on page 60). 2. Remove the computer access inch drive. The drive should be parallel to the green latch drive bracket. Changing from a Minitower to a Desktop Configuration 105 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 118
than the upper two bays. The bottom bay supports a half-height drive or other device that is desktop configuration. 11. Reposition the subpanel (rotate it 90º) with the logo at the bottom, then snap it back into the bezel. 106 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 119
described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly. NOTE: Not all features listed in this guide are available on all computers. Preparation for - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 120
HP reseller or service provider. Order PN 166527-001 for the wrench-style key or PN 166527-002 for the screwdriver bit key. ● Refer to the HP Web site (http://www.hp.com) for ordering information. ● Call the appropriate number listed in the warranty or in the Support Telephone Numbers guide - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 121
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock To open the access panel with the Smart Cover Lock engaged: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 2. Use the Smart Cover FailSafe Key to remove the tamper-proof screw that secures the Smart - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 122
below and on the following page can be used to secure the computer. Cable Lock Padlock 110 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 123
HP Business PC Security Lock 1. Fasten the security cable by looping it around a stationary object. 2. Thread the keyboard and mouse cables through the lock. External Security Devices 111 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 124
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 engage the lock. Use the key provided to disengage the lock. 112 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 125
Computer Access Panel 1. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 2. Press the buttons on the left and right sides of the computer (1), slide the access panel back until it stops, and then lift it up and off the chassis (2). To install the access panel, reverse - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 126
then remove the bezel from the chassis. To replace the front bezel, reverse the removal procedures. 114 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 127
Bezel Blanks On some models, there are bezel blanks covering the 3.5-inch and 5.25-inch external drive bays that need to be removed before installing a drive. To remove a bezel blank: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 2. Remove the access panel ( - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 128
the maximum memory support, you can populate the system board with up to 8 GB of memory configured in a highperforming dual channel mode. supported NOTE: The system will not operate properly if you install unsupported DIMMs. 116 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 129
capacity of the DIMMs in Channel B. In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. For optimal speed, the channels should be balanced so that the largest amount of - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 130
dual memory modules. Regardless of the power-on state, voltage is always supplied to the memory memory modules or system board. The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important to use memory handling a memory module, Locate the memory module sockets - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 131
installed in only one way. Match the notch on the module with the tab on the memory socket. A DIMM must occupy the black DIMM1 socket. For maximum performance, populate the sockets so that the memory capacity is spread as equally as possible between Channel A and Channel B. 5. Push the module down - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 132
PCI Express x1 expansion slots and one PCI Express x16 expansion slot. NOTE: The PCI and PCI Express slots support only low profile cards. An optional riser is available from HP that will support two full-height PCI 120 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 133
4. Release the slot cover retention latch that secures the PCI slot covers by lifting the green tab on the latch and rotating the latch to the open position. 5. Before installing an expansion card, remove the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 134
chassis frame. Be sure not to scrape the card against the other components. c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card and the open slot. 122 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 135
cables to the system board, if needed. 11. Replace the access panel. 12. If necessary, reconfigure the computer. Refer to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup. Expansion Cards 123 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 136
from major heat sources like the heatsink. ● Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not designed to take excessive pressure on them. ● Keep cables supply. 124 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 137
Cable Connections System board connectors are color-coded to make it easier to find the proper connection. ODD or 2nd HDD if no ODD present System board 2nd SATA HDD if ODD present Serial port A Serial port B Hood lock solenoid Heatsink fan Hood Sensor Front power button/LED System board System - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 138
needed to remove and install the guide screws on a drive. CAUTION: , you will need to run the Restore Plus! CD to load the HP factory-installed files. Drive Positions 1 3.5-inch internal hard drive bay 2 (F10) Utility Guide for more information. 126 Chapter 8 Removal and Replacement Procedures - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 139
Serial ATA second SATA hard drive to the next available (unpopulated) SATA connector on the system board by following the numbered support Parallel ATA (PATA) optical drives or PATA hard drives. ● You must install guide screws. The HP-supplied metric screws are black and the HP-supplied standard - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 140
Do not use excessive force when inserting a drive. Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers. If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the package - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 141
System Board Drive Connections Refer to the following illustration and table to identify the system board drive connectors. No. System Board Connector 1 Media Card Reader 2 Diskette Drive 3 SATA0 4 SATA1 5 SATA4 System Board Label MEDIA FLOPPY SATA0 SATA1 SATA4 Color black black dark - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 142
upright position. 4. Disconnect the power cable (1) and data cable (2) from the rear of the optical drive. 130 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 143
lift it up and out of the drive cage (2). To replace the optical drive, reverse the removal procedure. NOTE: When replacing a drive, transfer the four guide screws from the old drive to the new one. Installing an Optical Drive into the 5.25-inch Drive Bay To install an optional 5.25-inch - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 144
guide screws in the lower holes on each side of the drive. HP has provided four extra M3 metric guide extra M3 metric guide screws location. CAUTION: Use only 5-mm long screws as guide screws. Longer four M3 metric guide screws from the old drive to the new one. 5. Position the guide screws on the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 145
upright position. 7. Connect the SATA data cable to the white system board connector labeled SATA1. 8. Route the data cable through the cable guides. CAUTION: There are two cable guides that keep the data cable from being pinched by the drive cage when raising or lowering it. One is located on the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 146
an Optical Drive on page 130 to remove the optical drive and access the 3.5-inch drive. 134 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 147
2. Disconnect the drive cables, as indicated in the following illustrations: a. If you are removing a diskette drive, disconnect the data cable (1) and power cable (2) from the back of the drive. b. If you are removing a media card reader, disconnect the USB cable from the system board. Drives 135 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 148
drive into the 3.5-inch bay: NOTE: Install guide screws to ensure the drive will line up correctly in the drive cage and lock in place. HP has provided extra guide screws for the external drive bays (four 6-32 . 136 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 149
guide the connector on the system board labeled FLOPPY. b. If installing a second hard drive, connect the power and data cables to the rear available (unpopulated) SATA connector on the system board by following the numbered sequence of the connectors. c. If installing a media card reader, connect - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 150
Primary 3.5-inch Internal SATA Hard Drive NOTE: The system does not support Parallel ATA (PATA) hard drives. The preinstalled 3.5-inch hard drive is located under the power supply. To avoid damage to the cables or lock. 138 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 151
hard drive, transfer the silver and blue isolation mounting guide screws from the old hard drive to the new the SATA and power cables through the cable guide on the bottom of the chassis frame to avoid any hard drive performance problems. If you are adding a second hard drive, connect the other - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 152
to the top of the hard drive (1) and move the thermal sensor away from the carrier (2). 140 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 153
4. Remove the four screws from the bottom of the hard drive carrier. 5. Slide the hard drive back to disconnect it from the carrier then lift it up and out of the carrier. Drives 141 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 154
the four screws in the bottom of the carrier to hold the drive securely in place. 142 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 155
8. Place the thermal sensor on top of the hard drive in a position that does not cover the label (1) and attach the thermal sensor to the top of the hard drive with the adhesive strip (2). 9. Slide the cover on the carrier (1) and replace the screw on the rear of the carrier to secure the cover in - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 156
lift the card assembly from the chassis. To install the ReadyBoost card, reverse the removal procedure. 144 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 157
Fan Shroud 1. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 2. Remove the access panel (Computer Access Panel on page 113). 3. Lift the fan shroud straight up out of the chassis. To install the fan shroud, reverse the removal procedure. Fan Shroud 145 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 158
chassis fan, reverse the removal procedure. Be sure to orient the air flow into the unit. 146 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 159
LED. When installing the power switch, you may need to first insert one clip and the power button, then use a flat-blade screwdriver to help guide the other clip into its slot. Power Switch Assembly 147 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 160
from the system board. 6. Remove the screw that secures the front I/O device to the chassis (1). 7. Pull the device from the chassis and guide the cables through the hole to remove them from the chassis (2). To reinstall the front I/O device, reverse the removal procedure. 148 Chapter 8 Removal - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 161
Heatsink 1. Prepare the computer for disassembly (Preparation for Disassembly on page 107). 2. Remove the access panel (Computer Access Panel on page 113). 3. Remove the fan shroud (Fan Shroud on page 145). 4. Disconnect the heatsink fan control cable from the system board. 5. Loosen the four - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 162
thermal grease to the top of the processor from the syringe supplied in the spares kit. 150 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 163
installing a new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support/files. Speaker 1. Prepare the computer for disassembly - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 164
are not cut by the drive cage and are not pinched by the rotating power supply. 152 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 165
the computer for disassembly (Preparation for Disassembly on page 107). 2. Remove the access panel (Computer Access Panel on page 113). 3. Remove all PCI and PCI Express expansion boards (Expansion Cards on page 120). 4. Remove the fan shroud from the chassis (Fan Shroud on page 145). 5. Rotate the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 166
8. Disconnect the serial port from the system board. 9. Disconnect the balance of the cables removal procedure. NOTE: When replacing the system board, you must also change the chassis serial number in the BIOS. NOTE: The heatsink should be installed on the system board before the system board is - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 167
CAUTION: Before reinstalling the heatsink you must clean the top of the processor and the bottom of the heatsink with an alcohol pad supplied in the spares kit. After the alcohol has evaporated, apply thermal grease to the top of the processor from the syringe supplied in the spares kit. CAUTION: - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 168
, or dispose of in fire or water. Replace the battery only with the HP spare designated for this product. CAUTION: Before replacing the battery, it is important Guide for information on backing up the CMOS settings. NOTE: HP encourages customers to recycle used electronic hardware, HP original - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 169
type of battery holder on your system board, complete the following instructions to replace the battery: Type 1 Battery Holder 1. Lift the battery system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Type 2 Battery Holder 1. To release the battery from its holder, - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 170
and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Type 3 Battery Holder 1. Pull back on the clip (1) that holds the battery in place Refer to the Computer Setup (F10) Utility Guide. 158 Chapter 8 Removal and Replacement Procedures Small Form Factor - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 171
9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 172
There are two cable lock slots on the rear of the computer. The slot next to the thumbscrew should be used when there is no port cover. The slot on the far right should be used when a port cover is installed. 160 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 173
HP Business PC Security Lock 1. Fasten the security cable by looping it around a stationary object. 2. Thread the keyboard and mouse cables through the lock. External Security Devices 161 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 174
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 engage the lock. Use the key provided to disengage the lock. 162 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 175
Computer Access Panel To access internal components, you must remove the access panel: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 159). 2. Loosen the thumbscrew on the rear of the computer (1), slide the access panel toward the front of the computer, and then lift - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 176
computer (1), and then rotate the bezel off from right to left (2). To replace the bezel, reverse the removal procedures. 164 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 177
Bezel Blanks On some models, there is a bezel blank covering the external drive bay that needs to be removed before installing a drive. To remove a bezel blank: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 159). 2. Remove the computer access panel (Computer Access - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 178
supported NOTE: The system will not operate properly if you install unsupported SODIMMs. Refer to the Computer Setup (F10) Utility Guide for information on how to determine the processor bus frequency of a specific computer. 166 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 179
single channel mode if the SODIMM sockets are populated in one channel only. ● The system will operate in a higher-performing dual channel mode if the memory capacity of the SODIMM in Channel A is equal to the memory capacity of the SODIMM in Channel B. ● The system will operate in flex mode if the - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 180
a second SODIMM memory socket. A SODIMM must occupy the DIMM1 (top) socket. 6. Replace the SODIMM in the DIMM1 socket if it was removed. The computer automatically recognizes the additional memory when you turn on the computer. 168 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 181
when working inside the computer. ● Keep cables away from major heat sources like the heatsink. ● Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not designed to take excessive pressure on them. ● Keep cables clear of sliding or moveable parts to - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 182
Cable Connections System board connectors are color-coded to make it easier to find the proper connection. System Board Connections System Board inch) (2), and then disconnect the cable on the rear of the drive (3). 170 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 183
. 3. Insert the pin at the front of the optical drive into the hole at the end of the release latch, and press firmly. 4. Insert the second pin, and press the entire release latch firmly to fasten the latch securely to the optical drive. Optical Drive 171 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 184
. Leave it approximately 6 mm (1/4 inch) short of the fully-inserted locked position to allow room to connect the cable. 172 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 185
4. Connect the cable to the rear of the optical drive (1), and then slide the drive the rest of the way into the bay so that it locks in place (2). Optical Drive Connector 1. Prepare the computer for disassembly (Preparation for Disassembly on page 159). 2. Remove the computer access panel (Computer - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 186
Hard Drive NOTE: The Ultra-Slim Desktop supports only 2.5-inch Serial ATA (SATA) internal hard drives; parallel ATA (PATA) internal hard drives are not supported. The 2.5-inch hard drive is enclosed in a carrier under the optical drive. 1. Prepare the computer for disassembly (Preparation for - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 187
6. To remove the hard drive from the carrier, remove the guide screw from the front left side of the carrier. 7. Slide the carrier back and remove the hard drive. Hard Drive 175 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 188
drive. 9. Align the guide screws with the slots on the carrier and slide the new hard drive into the carrier (1), then replace the guide screw on the front left of the carrier to secure the drive in the carrier (2). 176 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 189
10. To place the hard drive carrier back in the chassis, align the guide screws with the slots on the drive bay, drop the carrier straight down into the drive bay (1), and press the handle on the carrier all - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 190
(3), and then lift the cage out of the chassis (4). To install the hard drive cage, reverse the removal procedures. 178 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 191
lock to the chassis that locks the port cover and secures the computer. See Cable Lock on page 160. The port cover is secured in place by a retention lever just inside the port cover opening. To remove the port cover, pull the lever back towards the port cover opening (1), then slide the cover to - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 192
board, and then lift the card assembly from the chassis. To install the ReadyBoost card, reverse the removal procedure. 180 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 193
Fan 1. Prepare the computer for disassembly (Preparation for Disassembly on page 159). 2. Remove the computer access panel (Computer Access Panel on page 163). 3. Disconnect the fan control cable from the system board. 4. Lift the fan straight up and out of the chassis. To install the fan, reverse - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 194
then slide the speaker up to remove it from the chassis (2). To install the speaker, reverse the removal procedure. 182 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 195
I/O Panel 1. Prepare the computer for disassembly (Preparation for Disassembly on page 159). 2. Remove the computer access panel (Computer Access Panel on page 163). 3. Remove the screw from the left side of the panel that holds the I/O panel in place (1). 4. Press the tab on left side of the panel - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 196
the pins on the socket are very fragile and any damage to them may require replacing the system board. 184 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 197
5. Lay the heatsink on its top in a safe area to prevent the thermal grease from contaminating the work surface. If reusing the existing heatsink go to step 1. If using a new heatsink, go to step 3. 1. If reusing the existing heatsink, clean bottom of the heatsink and apply the thermal grease - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 198
thermal grease provided in the spares kit to the top of the processor. 4. Position the heatsink atop the processor. 186 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 199
update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support the Optical Drive on page 170). 4. Remove the memory modules (Memory on page 166). 5. Remove the hard drive (Hard - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 200
procedure. NOTE: When replacing the system board, you must also change the chassis serial number in the BIOS. Rear Chassis Fan 1. Prepare the computer for disassembly (Preparation for Disassembly on to the chassis (1). 188 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 201
CMOS settings will be cleared. Refer to the Computer Setup (F10) Utility Guide for information on backing up the CMOS settings. NOTE: HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 202
to the computer. 7. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 190 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 203
pin assignments for many computer and workstation connectors. Some of these connectors may not be used on the product being serviced. Keyboard Connector and Icon Pin Signal 1 Data 2 Unused 3 Ground 4 +5 VDC 5 Clock 6 Unused Mouse Connector and Icon Pin Signal 1 Data 2 Unused - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 204
Ethernet RJ-45 Connector and Icon Ethernet AUI Connector and Icon Pin Signal 1 Ground 2 Negative AUI Differential Collision 3 Positive AUI Differential Collision 4 Negative AUI Differential Transmit 5 Positive AUI Differential Transmit 6 Ground 7 Ground 8 Negative AUI Differential - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 205
Data Bit 5 8 Data Bit 6 9 Data Bit 7 Pin Signal 10 Acknowledge 11 Busy 12 Paper End 13 Select 14 Auto Linefeed 15 Error 16 Initialize Printer 17 Select IN 18-25 Signal Ground Serial Interface, Powered and Non-Powered Connector and Icon Pin - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 206
USB Connector and Icon Microphone Connector and Icon (1/8" miniphone) 1 23 Headphone Connector and Icon (1/8" miniphone) 1 23 Line-in Audio Connector and Icon (1/8" miniphone) 1 23 Line-out Audio Connector and Icon (1/8" miniphone) 1 23 194 Appendix A Connector Pin Assignments Pin Signal 1 +5 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 207
External Infrared Transceiver Connector and Icon Monitor Connector and Icon Pin Signal 1 Transmit 2 Receive 3 Ground 4 5V 5 Mode 6 Not Used 7 Ground 8 Ground Pin Signal 9 +5V (fused) 10 Ground 11 Not used 12 DDC Serial Data 13 Horizontal Sync 14 Vertical Sync 15 DDC - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 208
ATA/ATAPI (IDE) Standard Drive Cable Connector Pin Signal 1 Reset 2 Ground 3 DD7 4 DD8 5 DD6 6 DD9 7 DD5 8 DD10 9 DD4 10 DD11 11 DD3 12 DD12 13 DD2 14 DD13 Pin Signal 15 DD1 16 DD14 17 DD0 18 DD15 19 Ground 20 (Key) 21 DMARQ 22 Ground 23 DIOW 24 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 209
GND 18 GND Pin Signal 40 +5V 41 +5V 42 +5V 43 GND 44 GND 45 GND 46 GND 47 CSEL 48 GND 49 Vendor-specific 50 Vendor-specific Pin Signal 19 GND 20 open 21 +5V 22 +5V 23 +5V 24 GND CD-ROM 50-Pin Connector 197 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 210
22 +3.3V 23 +3.3V 24 GND 4-Pin Power (for CPU) Connector and Icon Pin Signal 1 GND 2 GND 3 +12V CPU 4 -12V CPU 6-Pin Power (for CPU) (CMT, SFF) Connector and Icon 4 6 Pin Signal 1 GND 2 GND 3 GND 4 12V CPU 5 12V CPU 6 +12V 198 Appendix A Connector Pin Assignments - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 211
S1 Ground S5 BP1 Ground P5 BP9 V 5 P13 V 12 S = Data, P = Power Pin Signal S2 A+ S6 B+ P2 V 3.3 P6 Ground P10 Ground P14 V12 PCI Express x1, x4, x8, and x16 PCI Express Connector Pin Signal S3 AS7 Ground P3 V 3.3 P7 V 5 P11 Reserved P15 V 12 Pin Signal S4 Ground P4 Ground P8 V 5 P12 Ground - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 212
GND 78 GND 79 GND 80 PERp15 NOTE: x1 PCI Express uses pins 1-18 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-8 62 GND 63 GND 64 PERp11 65 PERn11 PCI Express x1, x4, x8, and x16 PCI Express Connector 67 GND 68 PERp12 69 PERn12 70 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 213
82 RSVD 78 PETp15 79 PETn15 80 GND NOTE: x1 PCI Express uses pins 1-18 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-8 62 PETp11 63 PETn11 64 GND 65 GND PCI Express Mini Card PCI Express Mini Card Connector 67 PETn12 68 GND 69 GND 70 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 214
34 GND 40 GND 46 LED_WPAN# 36 GND 41 Reserved* 47 Reserved* 36 USB_D- 42 LED_WWAN# 48 +1.5V NOTE: *Reserved for future second PCI Express LAN (if needed) **Reserved for future wireless coexistence control interface (if needed) ***Reserved for future UIM interface (if needed) 49 Reserved - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 215
B Power Cord Set Requirements The power supplies on some computers have external power switches. The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 216
Requirements Additional requirements specific to a country are shown in parentheses and explained configuration. 3. Appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration number in accordance with the Japanese Dentori Law. Flexible cord must be Type VCT or VCTF, 3- - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 217
problem, and steps you can take to resolve the error condition. POST Message Disabled suppresses most system messages during POST, such as memory count and non-error text messages. If a POST error occurs, the screen will display the error message. To manually switch Utility Guide. 205 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 218
time or date in configuration memory. RTC (real-time clock) battery may need to be replaced. Reset the date and time under Control Panel (Computer Setup can also be used). If the problem persists, replace the RTC battery. See the Hardware Reference Guide for instructions on installing a new battery - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 219
has the same amount of memory. 219-ECC Memory Module Detected ECC Modules not supported on this Platform Recently added memory module(s) support 1. If additional memory was recently ECC memory error correction. added, remove it to see if the problem remains. 2. Check product documentation for - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 220
Codes Port Address Conflict Detected Both external and internal ports are assigned 1. Remove any parallel port expansion to parallel port 2. Clear CMOS. 3. Verify monitor is attached and turned on. 4. has errors. Reflash the system ROM with the latest BIOS image. 511-CPU, CPUA, or CPUB Fan not - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 221
failed to initialize There is an incompatibility/problem with this device and the system or PCI Express Link could not be retrained to an x1. Try rebooting the system. If the error reoccurs, the device may not work with this system 1151-Serial Port A Address Conflict Detected Both external and - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 222
Codes (Available at http://www.hp.com/support.) 3. Back up contents RAID and select File > Save Changes and Exit. 1801-Microcode Patch Error Processor is not supported by ROM BIOS. 1. Upgrade BIOS to proper version. 2. Change the processor. 2200-PMM Allocation Error during MEBx Download Memory - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 223
latest BIOS version. 3. If the error still persists, replace the system board. 2211-Memory not configured correctly for proper MEBx execution. DIMM1 is not installed. Make sure there is a memory module in the black DIMM1 socket and that it is properly seated. Invalid Electronic Serial Number - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 224
. None None Red Power LED flashes two 2 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Computer on. None Computer in Suspend to RAM mode (some models only) or normal Suspend mode. None required. Press any - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 225
. Replace the power supply adapter with the HP-supplied USDT power supply adapter. Red Power LED flashes five 5 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Pre-video memory error. CAUTION: To avoid damage to - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 226
by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Invalid ROM based on bad 1. checksum. Reflash the system ROM with the latest BIOS image. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide for more information - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 227
Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action 3. Check that both power supply cables are properly connected to the system board. 4. Check to see if the 5V_aux light on - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 228
D Troubleshooting Without Diagnostics This chapter provides information on how to identify and correct minor problems, such as diskette drive, hard drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the computer, refer to the tables in this chapter - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 229
● Be in front of your computer when you call. ● Write down the computer serial number and product ID number, and the monitor serial number before calling. ● Spend time troubleshooting the problem with the service technician. ● Remove any hardware that was recently added to your system. ● Remove any - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 230
the computer. ● Reconfigure the computer after installing a non-plug and play expansion board or other option. See Solving Hardware Installation Problems on page 237 for instructions. ● Be sure that all the needed device drivers have been installed. For example, if you are using a printer, you need - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 231
standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide for instructions on installing - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 232
memory. 2. Add more memory. Some applications run in the background and can be closed by right-clicking on their corresponding icons in the task tray. To prevent these applications from launching at startup, go to Start > Run (Windows XP) or Start > Accessories > Run 220 Appendix D Troubleshooting - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 233
Problems Add more memory. 3. Upgrade the graphics solution. Cause unknown. Restart the computer. Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps reseller or service provider. - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 234
internal power supply Contact an authorized service provider to replace the power fault. supply. Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. (Beeps stop after fifth iteration but - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 235
up. Replace the power supply adapter with the HP-supplied USDT power supply adapter. Solving Diskette Problems Common causes and solutions for diskette problems are listed in the following table. NOTE: You may need to reconfigure the computer when you add or remove hardware, such as an additional - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 236
Table D-3 Solving Diskette Problems (continued) Drive not found. Cause Cable is loose. Removable drive is not seated properly. The device device on the diskette. Enter Computer Setup and enable Legacy Diskette Write in Storage > Storage Options. 224 Appendix D Troubleshooting Without Diagnostics - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 237
has occurred with a disk transaction. Cause Solution The directory structure is bad, or there is a problem with a file. In Microsoft Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Errorchecking, click Check Now. In Microsoft - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 238
problem. Cause Solution Either the directory structure is bad or there is a problem the Solving Hardware Installation Problems on page 237 section is a driver problem. If it is not listed, the probable cause is a hardware problem. If this for the device's SATA port in Security > Device Security - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 239
SATA port that beep codes. See the Worldwide Limited Warranty for terms and conditions. Computer seems to be locked up. Cause Program in use has stopped responding to commands. Solution Attempt the normal Windows "Shut Down" procedure. If this fails, press the power button for four or more seconds - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 240
hard drive enclosure is beeping and the green LED is flashing. Cause Solution Fan failure alarm on the removable hard drive enclosure has Shut down the computer and contact HP for a replacement been activated. enclosure. Solving Media Card Reader Problems Table D-5 Solving Media Card - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 241
Problems (continued) A write-protected or locked error occurs when attempting to write to the media card. Cause Solution Media card is locked. Locking the media card is a safety feature that prevents writing to and deleting from an SD/Memory or is not supported. on the seconds available ports, and - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 242
is Boot Block Emergency Recovery Mode (indicated by eight beeps). Reflash the system ROM with the latest BIOS image. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide for more information You are using a fixed-sync monitor and it will not sync at the Be sure - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 243
memory with HP memory. 4. Replace the system board. Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps not properly connected. Solution Adjust the monitor brightness and contrast controls. Check that - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 244
Solution Video resolution and refresh rate are set higher than what the Restart the computer and enter Safe Mode. Change the monitor supports. settings to a supported setting then restart the computer so that the new settings take effect. 232 Appendix D Troubleshooting Without Diagnostics - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 245
display menu. Manually synchronize the Clock and Clock Phase onscreen display functions. To download a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support Graphics card - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 246
Table D-7 Solving Audio Problems Sound cuts in and out. Cause Processor resources are being used attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. Internal speaker is - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 247
Solution Jack has been reconfigured in the audio driver or application In the audio driver or application software, reconfigure the jack software. or set the jack to its default value. Solving Printer Problems If you encounter printer problems, see the documentation that came with the printer - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 248
Table D-8 Solving Printer Problems (continued) Printer prints garbled information. Cause The correct printer driver for the application is not installed. The cables may not be connected properly. Printer memory may be overloaded. Solution Install the correct printer driver for the application. - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 249
standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved most computer stores. Solving Hardware Installation Problems You may need to reconfigure the computer when you add or remove hardware, such as an - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 250
for specific problems. 3. If you still cannot resolve the issue, contact Customer Support. Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Memory - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 251
memory with HP memory. 4. Replace the system board. Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps system board. Solving Network Problems Some common causes and solutions for network problems are listed in the following - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 252
Table D-12 Solving Network Problems Wake-on-LAN feature is not Manager. Check the network controller documentation for the correct driver or obtain the latest driver from the manufacturer's Web site. Network status link light proper connection. 240 Appendix D Troubleshooting Without Diagnostics - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 253
correct connector. There is a problem with the cable or a device service provider. Diagnostics passes, but the computer does not communicate with the network. Cause Solution Network drivers are not loaded, or driver parameters do not Make sure the network drivers are loaded and that the driver - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 254
drivers are corrupted. Reinstall the network drivers the boot standard specifications. sequence to service provider. Solving Memory Problems If you encounter memory problems, some common causes and solutions are listed in the following table. 242 Appendix D Troubleshooting Without Diagnostics - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 255
support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system. NOTE: The memory out of memory for the application. Check the memory requirements for the application or add more memory to the computer. Solving Memory Problems 243 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 256
Table D-13 Solving Memory Problems (continued) Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.) Cause Solution Memory is installed incorrectly or is bad. 1. - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 257
it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, Device Available Computer Setup. is selected for the device's SATA port in Security > Device Security. Drive responds slowly immediately after - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 258
Problems audio or video. Wait at least 30 seconds to let the DVD-ROM drive determine the computer and let Windows detect the CD or DVD driver. Recording or copying CDs is difficult or impossible. of media. Quality varies widely between manufacturers. USDT computer boots too slow after removing a CD - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 259
. Table D-16 Solving Drive Key Problems USB Drive Key is not seen Setup. available" is selected for "All USB Ports" and "Front USB Ports" under Security > Device Security. The device a Bootable Device: Supported USB Flash Media Device" section of the Service Reference Guide. The computer boots - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 260
connected to a live outlet. The correct device driver is not installed. 1. Install the correct driver for the device. 2. You might need to ports. Solving Internet Access Problems If you encounter Internet access problems, consult your Internet Service Provider Troubleshooting Without Diagnostics - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 261
Internet Access Problems (continued) browser. This is useful for having the browser remember some specific information that the Web server can later retrieve.) Windows Vista Modems. 6. Double-click Agere Systems PCI-SV92PP Soft Modem. 7. On the General tab, click Diagnostics. 8. Click Query Modem. A - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 262
it is supported on the system. If you encounter software problems, see the applicable solutions listed in the following table. Table D-19 Solving Software Problems Computer will not continue and no HP logo screen has appeared. Cause Solution POST error has occurred. Observe the beeps and LED - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 263
Solving Software Problems (continued) hp.com. NOTE: If you take the computer to an authorized reseller, dealer, or service provider for service, remember to provide the setup and power-on passwords if they are set. Refer to the number listed in the warranty or in the Support Telephone Numbers guide - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 264
Designators These reference designators are used on most but not all HP system and riser boards. Designator BAT CR1 CR2 CR3 CR4 CR35 Stacked RJ45/Dual USB Quad stacked USB First IEEE 1394 connector Second IEEE 1394 connector SPDIF input SPDIF output PCI slots PCI extender slot (male) PCI Express - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 265
AGP slot x16 PCI Express slot for graphics First parallel port Second parallel port Double-stacked parallel port, Top = Port B, Bottom = Port A Parallel port over single Serial Port Parallel port over Serial Port and Video Port Parallel port over dual VGA ports DVI connector Keyboard connector - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 266
1 P26 Internal USB connector 2 P27 MultiBay header P29 SCSI LED connector P30 PCI extender slot (female) P40 Blade PC graphics connector (outboard) P41 Blade PC graphics connector (inboard) P52 Second serial port 254 Appendix E System Board and Riser Board Reference Designators - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 267
P216 SW2 SW50 U2 U3 Primary serial port Double stack serial port, Top = Serial B, Bottom = Serial A Riser edge connector (male-mates with J30) PrimarySerial ATA (SATA) connector Second Serial ATA (SATA) connector Third Serial ATA (SATA) connector Fourth Serial ATA (SATA) connector VSFF expansion - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 268
footprint TMDS controller Parallel port diode array First serial port transceiver Second serial port transceiver VRM controller USB front port power switch First USB rear port power switch Second USB rear port power switch Third USB rear port power switch Battery retainer Memory slot. DIMM1 or RIMM1 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 269
Y4 Y5/H5 Secondary NIC clock crystal RTC clock crystal/tie-down 257 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 270
Manager 28 backwall, SFF removal and replacement 155 battery CMT removal and replacement 100 disposal 59 SFF removal and replacement 156 USDT removal and replacement 189 beep codes 212 bezel blanks SFF removal and replacement 115 USDT removal and replacement 165 BIOS Boot Block Emergency Recovery - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 271
deployment tools, software 21 desktop conversion 105 diagnostic tool for hard drives 47 diagnostics utility 15 DIMMs. See memory disassembly preparation CMT 60 SFF 107 USDT 159 disk, cloning 21 diskette drive installing 87 diskette problems 223 DiskOnKey bootable 35, 36 HP Drive Key 35 drive bezel - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 272
96 Insight Diagnostics 15 installing CMT diskette drive 87 CMT media card reader 87 CMT optical drive 87 CMT removable hard drive 82 SFF diskette drive 136 SFF drive cables 127 SFF guide screws 127 SFF media card reader 136 SFF optical drive 131 SFF removable hard drive 140 USDT memory module 166 - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 273
160 HP Business PC Security Lock 161 M media card reader installing 87 Media Card Reader problems 228 memory CMT removal and replacement 69 populating sockets 117 SFF removal and replacement 116 specifications 116 USDT specifications 166 memory problems 242 microphone pin assignments 194 minitower - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 274
47 HP Business PC Security Lock 111, 161 HP ProtectTools Security Manager 26 password 41 settings 38 SFF 110 SFF cable lock 110 SFF padlock 110 Smart Cover Lock 45 Smart Cover Sensor 45 USDT 160 serial interface pin assignments 193 serial port CMT removal and replacement 97 service considerations - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 275
23 servicing computer 57 updating and management tools 24 Verdiem Surveyor 23 spare part number tamper-resistent wrench 58 Torx T-15 screwdriver 57 speaker CMT removal and replacement 94 SFF removal and replacement 151 USDT removal and replacement 182 specifications CMT memory 69 SFF memory 116 USDT - HP dc73 | Service Reference Guide - HP Compaq dc7800 Business PC - Page 276
Surveyor 23 W Wake-on-LAN feature 240 Web sites BIOS download 31 HP Client Foundation Suite 27 HP Client Foundation Suite and Client Premium Suite 23 HP Client Manager 26 HP Client Premium Suite 27 HP OpenView Client Configuration Manager 27 HP OpenView PC Configuration Management Solution 22, 28
Service Reference Guide
HP Compaq dc7800 Business PC