HP Dx2250 HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition
HP Dx2250 - Compaq Business Desktop Manual
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- HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 1
Service Reference Guide HP Compaq dx2250 Business PC - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 2
Windows are trademarks of Microsoft Corporation in the U.S. and other countries. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Company. Service Reference Guide Business PCs First Edition (November 2006) Document - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - 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 Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 4
iv About This Book ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 5
Table of contents Index ...153 ENWW v - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 6
vi ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 7
for the operating system from http://www.hp.com/support. Select your country and language, select Download drivers and software, enter the model number of the computer, and press Enter. Transferring Files and Settings Use the Microsoft Windows XP Professional/Home Files and Settings Transfer Wizard - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 8
, or they can be initiated manually. Recovery can be performed from the Recovery Partition on the hard drive or the Recovery Disc Set. The Recovery Disc Set includes the Restore Plus! CD, the Microsoft Operating System, and any Supplemental Software CDs. NOTE: HP highly recommends that you create - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 9
system date and time. ● Set, view, change, or verify the system configuration, including settings for processor, graphics, memory, audio, storage, communications, and input devices. ● Modify the boot order of bootable devices such as hard drives, diskette drives, optical drives, or USB flash media - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 10
menu headings and actions. Eight menu headings appear on the Computer Setup Utility screen: ● System Information ● Standard CMOS Features ● Advanced BIOS Features ● Advanced Chipset Features ● Integrated Peripherals ● Power Management Setup ● PC Health Status Five action choices are listed on the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 11
Table 2-7 Computer Setup-Power Management Setup on page 11 PC Health Status Table 2-8 Computer Setup-PC Health Status on page 12 (Action Choices) Table 2-9 Computer Setup-(Action Choices) on page 12 Computer Setup-System Information NOTE: Support for specific Computer Setup options may vary - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 12
: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-3 Computer Setup-Standard CMOS Features Option Description Date (mm:dd:yy) Allows you to set system date. Time (hh:mm:ss) Allows you to set system time. PATA Controller Disables/enables - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 13
Table 2-3 Computer Setup-Standard CMOS Features (continued) SATA Channel 1 Master For each, allows you to: SATA Channel 2 Master ● run HDD self-test for selected channel: ● SMART Status Check ● HDD Short Self-Test ● HDD Extended Self-Test ● set extended IDE drive on selected channel to: ● None - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 14
will boot first, second, third, and fourth or to disable any of the four: ● Removable ● Hard Disk ● CDROM ● Network ● Disabled NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating system has started. Boot Up NumLock Status Security Option BIOS Write Protect AMD - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 15
Setup-Advanced Chipset Features NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-5 Computer Setup-Advanced Chipset Features Option Description UMA Frame Buffer Select the UMA (Unified Memory Architecture) frame buffer size: ● 32MB - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 16
Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-6 Computer Setup-Integrated Peripherals Option Heading Onboard HD Audio Disables/enables onboard HD audio. OnChip USB Controller Disables/enables USB controller. USB Legacy Support Disables - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 17
NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-7 Computer Setup-Power Management Setup Option Heading After AC Power Loss Allows you to select system power loss behavior: ● On ● Off ● Last State External Modem S5 Wake-Up Disables - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 18
Computer Setup-PC Health Status NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table 2-8 Computer Setup-PC Health Status Option Description System Fan Fail Check Disables/enables system fan detection during POST. Smart Fan Function Disables/ - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 19
the configuration settings established in the Computer Setup (F10) Utility requires that you first back up the settings before a recovery is needed. The CMOS Save/Load utility can be found at http://www.hp.com under the Software & Driver Downloads for your specific model. Download the firmware files - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 20
14 Chapter 2 Computer Setup (F10) Utility ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 21
will boot to the CD. NOTE: If the system does not boot to the CD in the optical drive, you may need to change the boot order in the Computer Setup (F10) utility so that the system attempts to boot to the optical drive before booting to the hard drive. Refer to the Computer Setup (F10) Utility Guide - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 22
configuration memory (CMOS) information, system board data, and system management BIOS data. Storage-Shows information about storage media connected to the computer. This list includes all fixed disks, diskette drives, and optical drives. System-Shows information about the computer model, processor - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 23
from: ● Interactive Mode-Provides maximum control over the testing process. The diagnostic software will prompt you for input during tests device passed or failed. 7. If errors are found, go to the Log tab and click the Error Log to display more detailed information and HP Insight Diagnostics 17 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 24
can not save to the hard drive. The system will automatically create an html file that has the same appearance as the information displayed on the screen. 1. Insert a diskette or USB 2.0 HP Drive Key (capacity must be 64MB or higher). USB 1.0 Drive Keys are not supported. 2. Click Save in the bottom - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 25
, or they can be initiated manually. Recovery can be performed from the Recovery Partition on the hard drive or the Recovery Disc Set . The Recovery Disc Set includes the Restore Plus! CD, the Microsoft Operating System, and any Supplemental Software CDs. NOTE: HP highly recommends that you create - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 26
the message "Press F11 for Emergency Recovery." NOTE: For more information on using HP Backup and Recovery Manager, refer to the HP Backup and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. 20 Chapter 3 HP Insight Diagnostics ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 27
installation ● Software updating and management ● ROM flash ● Asset tracking and security ● Fault notification and recovery NOTE: Support for specific features described in this guide may vary by model or software version. Initial Configuration and Deployment The computer comes with a preinstalled - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 28
management and troubleshooting, and power management. NOTE: See HP Backup and Recovery Manager on page 23 for information on creating the Restore Plus! CD. HP OpenView Agent The Radia Management Agent (RMA) used by both HP OpenView Client Configuration Manager and HP OpenView PC Configuration - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 29
in the wizard. In addition to allowing you to create the Restore Plus! CD set, HP Backup and Recovery Manager can be used to back up data and system files to the hard drive, to network drives, or to removable media, such as CDs, DVDs, or flash media. If data or system files are lost, deleted, or - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 30
● Formatting a hard drive ● Deploying a software image on one or more new PCs ● Remotely updating the system BIOS in flash ROM (Remote ROM Flash on page 29) ● Configuring the system BIOS settings To initiate Remote System Installation, press F12 when the F12 = Network Service Boot message appears in - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 31
how you manage your HP client computers. HP Client Management Interface used in conjunction with system management software can: ● Request in-depth client inventory information-Capture detailed information about the processors, hard drives, memory, BIOS, drivers, including sensor information (such - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 32
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 Scan-check for known hardware issues in your installed base of HP client systems - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 33
hardware management ● Remote control ● HP alert monitoring ● HP hardware driver and BIOS updates ● Integration with HP ProtectTools ● Free add-on support for Intel Active Management Technology (AMT) ● Free version for basic hardware management of HP desktops and notebooks, and software and hardware - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 34
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. 28 Chapter 4 Desktop Management - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 35
://www.hp.com/support/files and enter the model number of the computer when prompted. Boot Block Emergency Recovery Mode Boot Block Emergency Recovery Mode permits system recovery in the unlikely event of a ROM flash failure. For example, if a power failure were to occur during a BIOS upgrade, the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 36
Boot Block Emergency Recovery Mode, complete the following steps: 1. Turn off the power. 2. Insert a diskette, CD, or USB flash device containing the desired BIOS image file in the root directory. NOTE: The media must be formatted using the FAT12, FAT16, or FAT32 file system. 3. Turn on the computer - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 37
Supported USB Flash Media Device on page 32 or Unsupported USB Flash Media Device on page 33. CAUTION: Not all computers can be booted from a USB flash media device. If the default boot order in the Computer Setup (F10) Utility lists the USB device before the hard drive, the computer can be booted - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 38
on the USB flash media device will be lost.) ● a PC that is bootable from a USB flash media device CAUTION: Some older PCs may not be bootable from a USB flash media device. If the default boot order in the Computer Setup (F10) Utility lists the USB device before the hard drive, the computer can be - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 39
Remove the diskette and reboot the computer. The computer will boot to the USB flash media device as drive C. NOTE: The default boot order varies from computer to computer, and it can be changed in the Computer Setup (F10) Utility. If you have used a DOS version from Windows 9x, you may see a brief - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 40
before the hard drive, the computer can be booted from a USB flash media device. Otherwise, a bootable diskette must be used. 1. If there are any PCI cards in 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 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 41
for four seconds. CAUTION: Do not use the power button to turn off the computer unless the system is not responding; turning off the power without operating system interaction could cause damage to or loss of data on the hard drive. HP Web Site Support HP engineers rigorously test and debug software - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 42
Sensor, and the Smart Cover Lock are available as options on some systems. Use the following utilities to manage security settings on the HP computer: ● Locally, using the Computer Setup Utilities. See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD included with the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 43
flash the ROM, and make changes to certain plug and play settings under Windows. Power-On Password Password Options (This selection will appear only if a power-on password is set.) Pre-Boot Authorization Smart Cover See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 44
provided during a subsequent cold-boot sequence. NOTE: This selection will only appear when at least one ATA drive that supports the ATA Security command set is attached to the system. See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for more information. For - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 45
embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. If a setup password has been established on the computer, you will be prompted to enter it each time you run Computer Setup. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 46
you must restart the computer and again press F10 options in Computer Setup. Deleting a Power-On or Setup Password If the system is equipped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. 1. Turn on or restart the computer. If you are in Windows - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 47
the HP ProtectTools Security Manager Guide at www.hp.com. DriveLock DriveLock is an industry-standard security feature that prevents unauthorized access to the data on ATA hard. DriveLock has been implemented as an extension to Computer Setup. It is only available when hard drives that support the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 48
from Windows, if neither attempt succeeds, POST will halt and the user will be instructed to cycle power. DriveLock Applications The most practical use of the DriveLock security feature is in a corporate environment. The system administrator would be responsible for configuring the hard drive which - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 49
Setup, see the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD. Setting the Smart Cover Sensor Protection Level To set the Smart Cover Sensor protection level, complete the following steps: 1. Turn on or restart the computer. If you are in Windows, click Start > Shut - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 50
enter the password to disable the lock, you will need a Smart Cover FailSafe Key to open the computer cover. You will need the key in any of the following circumstances: ● Power outage ● Startup failure ● PC component failure (such as processor or power supply) ● Forgotten password CAUTION: The - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 51
the hard drive. You 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 integrated surge-tolerant power supply provides - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 52
46 Chapter 4 Desktop Management ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 53
NOTE: Serial ATA = SATA Parallel ATA = PATA HP only supports the use of SATA hard drives on these models of computer. No PATA drives are supported. 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 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 54
differential signal pair **P5 and P6 differential signal pair SATA Power Cable Pin Usage P1 V3.3 P2 V3.3 P3 V3.3 P4 Ground P5 Ground P6 Ground P7 V5 P8 V5 Notes 3.3 V power 3.3 V power 3.3 V power 5 V power 5 V power Device Plug Ground Transmit data Transmit data Ground Receive - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 55
computer specification. Drive size calculations by drive manufacturers are bytes to the base 10 while calculations by Microsoft are bytes to the base 2. File System FAT 32 NTFS Drive/Partition Capacity Limits Controller Type ATA ATA Operating System Windows 2000/ XP Windows NT/2000/XP Maximum - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 56
50 Chapter 5 Serial and Parallel ATA Drive Guidelines and Features ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 57
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 The following subsection illustrates the dx2250 chassis design. Microtower (MT) ENWW Chassis Designations 51 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 58
its life expectancy. Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. Generating Static The following table shows that: ● Different activities generate different amounts - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 59
boots. On conductive floors or dissipative floor mats, use them on both feet with a maximum , use the following precautions: ● Cover the work surface with approved static- free work areas. ● Turn off power and input signals before inserting and Styrofoam. ● Use field service tools, such as cutters - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 60
● Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance ● Static-dissipative table or floor mats with hard tie to ground ● Field service kits ● Static awareness labels ● Wrist straps and footwear straps providing one-megohm +/- 10% resistance ● Material handling packages - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 61
the enclosure, and the same operating guidelines listed above will still apply. ● Keep liquids away from the computer and keyboard. ● Never cover the ventilation slots on the monitor with any type of material. ● Install or enable power management functions of the operating system or other software - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 62
rubbing) alcohol. No rinsing is needed as the alcohol will evaporate quickly and not leave a residue. ● After Computer Case on page 55. When cleaning debris from under the keys, review the keys. This tool is available through many electronic supply outlets. CAUTION: Never remove a wide leveled key - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 63
to their proper locations. CAUTION: Metric screws have a black finish. U.S. screws have a silver finish and are used on hard drives only. CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area to prevent damage. ENWW Service Considerations 57 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 64
by parts being removed or replaced. CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the reassembly process. Improper cable placement can damage the computer. Hard Drives Handle hard drives as delicate, precision components, avoiding all physical - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 65
systems the cooling fan is on even when the computer is in the "Standby," or "Suspend" modes. The power cord should always be disconnected before servicing a unit. 5. Disconnect the power cord from the electrical outlet and then from the computer. 6. Disconnect all peripheral device cables from the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 66
computer access panel, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 2. Disconnect the power cord from the computer and from the power the removal steps. 60 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 67
Front Bezel 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59) 2. Remove the access panel (Access Panel on page 60 ) 3. bezel off the chassis (2), beginning with the left side and then the right side. To reinstall the front bezel, reverse the removal procedure. ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 68
Front Drive Bezels 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59) 2. Remove the access panel (Access Panel on page 60) 3. Remove the front bezel (Front Bezel on page 61) 5.25" Drive Bezel Blank While facing the inside of the front bezel, press the two retaining tabs - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 69
Removing a 3.5" Drive Bezel Blank While facing the inside of the front bezel, press outward on the retaining tabs on each side of the bezel blank (1) and pull the bezel blank inwards to remove it. NOTE: To install a 3.5" bezel blank, press the blank inward from the inside of the front bezel so that - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 70
. When upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. CAUTION: Static electricity can damage the electronic components of the computer or optional cards - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 71
access panel and lay the computer down on its side to make it easier to work on. (Access Panel on page 60) WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. 3. Open both latches of the memory module socket (1), and insert the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 72
Expansion Cards Expansion Slot Cover Lock 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59) 2. Remove the access panel (Access Panel on page 60) 3. Lay the computer down on its side to make it easier to work on. 4. On the rear of the computer, remove the screw that - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 73
shield on the rear panel that covers the expansion slot. Be sure you remove the appropriate shield for the expansion card you are installing. Removable Shield Top shield Second shield Third shield Bottom shield Expansion Card Type PCI Express x16 PCI Express x1 PCI PCI ENWW Expansion Cards 67 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 74
in the expansion card socket. 11. Reinstall the slot cover lock and its retaining screw. 12. Replace the access panel. 13. Connect external cables to the installed card, if needed. Reconfigure the computer, if necessary. 68 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 75
cable sharply. A sharp bend can break the internal wires. ● Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius. ● Never crease a SATA data cable. ● Do not rely on components like the drive cage, power supply, or computer cover to push cables down into the chassis. Always position the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 76
Cable Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Cable Diskette drive 1st SATA Hard drive 2nd SATA Hard drive ODD Data ODD Audio Heatsink fan Secondary system fan Front power on button Front I/O USB Speaker Front audio To 1st SATA Hard drive System - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 77
the guide screws on a drive. CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to run the Restore Plus! CD to load the Compaq - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 78
metric threads. US screws are used for used for hard drives and have a silver finish. Metric screws are used for all other drives and have a black finish. Be sure to install the appropriate guide screws into the drive. 72 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 79
Drive Media Card Reader Retainer Screws 2 (labeled "FDD" on chassis) 2 (labeled "CR" on chassis) Guide Screws 1 (front left side of drive) none NOTE: If you are installing a drive in the external 3.5" drive bay for the first time, use a flat blade screwdriver to pry out the metal shield covering - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 80
metric threads. US screws are used for used for hard drives and have a silver finish. Metric screws are used for all other drives and have a black finish. Be sure to install the appropriate guide screws into the drive. 74 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 81
(2). To replace the hard drive cage, reverse the removal procedure. No guide screws are required for drives installed in the hard drive bays (bays 4 and 5). NOTE: If you replaced the primary hard drive, the Restore Plus!CD may be used to restore the operating system, software drivers, and/or any - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 82
the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Access Panel on page 60) 3. Remove the front bezel (Front Bezel on page 61) 4. Free removal procedures. 76 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 83
Power Switch Assembly 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59). 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Access Panel on page 60) 3. Disconnect the braided cables - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 84
Speaker 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59) 2. Remove the access panel (Access Panel on page 60) 3. Remove the front bezel (Front Bezel on page 61) 4. retaining screw. 78 Chapter 7 Removal and Replacement Procedures- Microtower (MT) Chassis ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 85
System Fan 1. Prepare the computer for disassembly (Preparation for Disassembly on page 59) 2. Remove the access panel (Access Panel on page 60) When installing the fan, make sure the wires leading from the fan are located near the P2 4-pin power connector on the system board. ENWW System Fan 79 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 86
wipe and fresh thermal grease has been applied to the top of the processor. New heatsinks come from the factory with fresh thermal grease already applied. Position the heatsink so that fan wiring is closest to the power supply. Check to ensure that the heatsink mounting lugs do not rest on any - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 87
59). 2. Remove the access panel and lay the computer down on its side to make it easier to work on. (Access Panel on page 60). 3. Disconnect the heatsink control cable from the system board and remove the heatsink. Heatsink on page 80 4. Rotate the processor locking lever to its full open position - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 88
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 ROM BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support/files. 82 Chapter 7 Removal and Replacement Procedures- Microtower (MT - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 89
, reverse the removal procedure. NOTE: After installing a new 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 ROM BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support/files. ENWW System Board 83 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 90
battery only with the HP/Compaq spare designated for this product. CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting Guide for information on backing - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 91
the battery in the proper position. 4. Replace the computer access panel. 5. Plug in the computer and turn on power to the computer. 6. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. ENWW Battery 85 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 92
release computer access panel. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 86 Chapter 7 Removal and Replacement Procedures- Microtower (MT - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 93
and position the clip back in place. 3. Replace the computer access panel. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. ENWW Battery 87 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 94
equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer. 1. Prepare the computer for power supply to the chassis. 5. Slide the power supply toward the front of the computer, then lift it out of the computer. To install the power supply, - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 95
A Connector Pin Assignments This appendix contains the 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 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 96
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 Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 97
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 Signal 1 Carrier Detect (12V if powered) 2 Receive Data 3 Transmit Data 4 Data Terminal Ready 5 Signal - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 98
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 External Infrared Transceiver Connector and Icon Pin 1 (Tip) 2 (Ring) 3 (Shield) - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 99
Monitor Connector and Icon Pin Signal 1 Red Analog 2 Green Analog 3 Blue Analog 4 Not used 5 Ground 6 Ground 7 Ground 8 Ground 1 Transmit 2 Receive 3 Ground 4 5V 5 Mode 6 Not Used 7 Not Used 8 Not Used Pin Signal 9 +5V (fused) 10 Ground 11 Not used 12 DDC - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 100
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 24-Pin Power Connector 24 Pin Signal 15 DD1 16 DD14 17 DD0 18 DD15 19 Ground 20 (Key) 21 DMARQ - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 101
Signal 1 +5 Vaux 2 GND 3 +5V 4 +5V 5 PS_ON 6 GND 1 Pin Signal 7 PWRGD 8 +3.3V 9 +3.3V 10 Tach 11 GND 12 Fan-CMD 4-Pin Power (for CPU) Connector and Icon 6-Pin Power (for CPU) Connector and Icon 4 6 Pin Signal 13 +12V 14 +5V Sense 15 GND 16 +5V 17 +5V 18 +3.3V Pin Signal - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 102
SATA Data and Power Drive Connector Pin Signal 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 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 103
79 GND 80 PERp15 Pin B information is on the next page 62 GND 63 GND 64 PERp11 65 PERn11 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 67 GND 68 PERp12 69 PERn12 70 GND 72 PERp13 73 PERn13 74 GND 75 GND - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 104
PETn11 64 GND 65 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 66 PETp12 67 PETn12 A Connector Pin Assignments Pin Signal 13 T.M.D.S. Data3+ 14 +5V Power 15 Ground (for +5V) 16 Hot Pug Detect 17 T.M.D.S. - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 105
12 T.M.D.S. Data3- 24 T.M.D.S. Clock- ENWW DVI Connector 99 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 106
100 Appendix A Connector Pin Assignments ENWW - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 107
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 Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 108
cord must be Type HO5VV-F, 3-conductor, 0.75mm2 conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation in the country where it will be used. 2. The flexible cord must be Type SVT or equivalent, No. - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 109
Power-On Self-Test (POST) or computer restart, the probable source of the 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 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 110
The computer will beep once after a POST text message is displayed on the screen. Table C-1 Numeric Codes and Text Messages Control panel message Description Recommended action 101-Option ROM Checksum Error System ROM or expansion board option ROM checksum. 1. Verify the correct ROM. 2. Flash - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 111
placement of the CMOS jumper if applicable. 164-MemorySize Error Memory amount has changed since the last Press the F1 key to save the memory boot (memory added or removed). changes. 164-MemorySize Error Memory configuration incorrect. 1. Run Computer Setup or Windows utilities. 2. Make sure - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 112
Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. 501-Display Adapter Failure Graphics display controller. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. 3. Verify monitor is attached and turned on. 4. Replace the graphics card (if possible). 510-Flash Screen - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 113
cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. 1201-System Audio Address Conflict Detected Device IRQ address conflicts with another device. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. ENWW POST Numeric Codes - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 114
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 error during POST execution of the 1. Management Engine (ME) BIOS Extensions option ROM 2. Reboot the computer. Unplug the power - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 115
(ME) BIOS Extensions option ROM 2. Reboot the computer. Unplug the power cord, re-seat the memory modules, and reboot the computer. 3. If the memory configuration was recently changed, unplug the power cord, restore the original memory configuration, and reboot the computer. 4. If the error - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 116
2 System will not boot without fan Parity RAM failure. CPU fan not installed or disconnected in VSFF chassis. Recommended action 3. Ensure that none of the keys are depressed. 4. Replace keyboard. Run Computer Setup and Diagnostic utilities. 1. Remove the computer cover, press the power button - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 117
an authorized reseller or service provider. Green Power LED flashes every two seconds. Computer in Suspend to RAM Press any key or move the mouse to wake the computer. mode (some models only) or normal Suspend mode. Green Power LED flashes five Pre-video memory error. times, once every second - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 118
the graphics card. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. 1. Reflash the system ROM with the latest BIOS image. 2. Replace the system board. Press and hold the power button for less than 4 seconds. If the hard drive - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 119
, hard drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the computer, refer to the tables in this chapter for probable causes and recommended solutions. NOTE: For information on specific error messages that may appear on the screen during Power-On - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 120
For more information on using HP Backup and Recovery Manager, refer to the HP Backup and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. CAUTION: Running the Restore Plus! CD will erase all data on the hard drive. Helpful Hints If you - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 121
not restart, press the power button to start the computer. ● Reconfigure the computer after installing a non-plug and play expansion board or other option. See Solving Hardware Installation Problems on page 137 for instructions. ● Be sure that all the needed device drivers have been installed. For - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 122
RTC battery. First, reset the date and time under Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Documentation and Diagnostics CD for instructions on installing a new battery - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 123
. Poor performance is experienced. Cause Processor is hot. Hard drive is full. Low on memory. Hard drive fragmented. Program previously accessed did not release reserved memory back to the system. Virus resident on the hard drive. Solution 1. Make sure airflow to the computer is not blocked. Leave - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 124
. 2. 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 stop after fifth iteration but - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 125
Table D-1 Solving General Problems (continued) System does not power on and the LEDs on the front of the computer are not flashing. Cause Solution OR Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then: 1. Check that the unit is plugged - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 126
power supply Replace the power supply. fault. 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 LEDs continue flashing.) Cause Solution Processor - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 127
on the diskette. Legacy diskette writes are disabled in Computer Setup. Diskette is damaged. Solution Format the diskette. 1. From Windows Explorer select the disk (A) drive. 2. Right-click the drive letter and select Format. 3. Select the desired options, and click Start to begin formatting the - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 128
stops, remove the diskette and press the the computer has been inserted in the drive. Spacebar. The computer should start up. Diskette error has occurred. Restart the computer by pressing the power button. Cannot Boot to Diskette. Cause Diskette is not bootable. Diskette boot has been disabled - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 129
NOTE: Both steps should be used as the Removable Media Boot function in Computer Setup overrides the Boot Order enable command. Network server mode is enabled in Computer Setup. Run Computer Setup and disable Network Server Mode in Security > Password Options. ENWW Solving Diskette Problems 123 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 130
is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, run the Computer Setup utility and try adding a POST delay under Advanced > Power-On Options. The device is attached to a SATA port that has been disabled Run the Computer Setup - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 131
that has been disabled Run the Computer Setup utility and ensure the device's SATA in Computer Setup. port is enabled in Storage > Storage Options. Hard drive is damaged. Observe if the front panel Power LED is blinking RED and if any beeps are heard. See Appendix A, POST Error Messages on page - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 132
card in a computer with Windows XP. 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 Stick/ PRO card. If using an SD card - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 133
Computer will not boot from a USB removable drive or media that is inserted in the USB port on the media card reader. Cause Solution The media card reader is connected to the computer via the PCI card, which is not supported on the HP Desktop BIOS. The bootable USB device will have boot support - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 134
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 on the Documentation and Diagnostics CD for more information. You are using a fixed-sync monitor and it will not sync at the Be - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 135
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 stop after fifth iteration but LEDs continue flashing.) Cause Solution Pre-video graphics error - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 136
correct graphics Install the video drivers included in the upgrade kit. drivers may not be loaded. Monitor is not capable of displaying requested resolution. Change requested resolution. Graphics card is bad. Replace the graphics card. The picture is broken up, rolls, jitters, or flashes. Cause - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 137
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 is not - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 138
table. Table D-7 Solving Audio Problems Sound cuts in and out. Cause Solution Processor resources are being used by other open applications. Direct sound latency, common in many media player applications. Shut down all open processor-intensive applications. In Windows XP: 1. From the Control - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 139
headphones into the headphone connector on the The rear audio output connector is for powered audio devices front of the computer. and is not designed for headphone use. Computer appears to be locked up while recording audio. Cause Solution The hard disk may be full. Before recording, make sure - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 140
solutions listed in the following table. Table D-8 Solving Printer Problems Printer will not print. Cause Solution Printer is not turned on and properly. Printer memory may be overloaded. Solution Install the correct printer driver for the application. Reconnect all cables. Reset the printer by - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 141
connector is not properly connected. 1. On the Windows Desktop, click Start. 2. Click Shut Down. The Shut Down Windows dialog box is displayed. Program in use has stopped responding to commands. Keyboard needs repairs. Wireless device error. Computer is in standby mode. 3. Select Shut down - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 142
or is too slow. Cause Program in use has stopped responding to commands. Mouse may need cleaning. Mouse may need repair. Wireless device error. Computer is in standby mode. Solution 3. Use the up or down arrow key to select the Shut Down option and then press the Enter key. 4. After the shutdown - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 143
if you are using the correct memory modules and to verify the proper installation. 2. Observe the beeps and LED lights on the front of the computer. Beeps and flashing LEDs are codes for specific problems. 3. If you still cannot resolve the issue, contact Customer Support. ENWW Solving Hardware - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 144
Replace third-party 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 stop after fifth iteration but LEDs continue flashing.) Cause Solution Graphics card is not seated - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 145
Configure. 6. Click the Power Management tab, then select the check box to Allow this device to bring the computer out of standby. Network driver does not detect network controller. Cause Network controller is disabled. Incorrect network driver. Solution 1. Run Computer Setup and enable network - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 146
is supposed to flash when there is network activity. Cause Network driver is not properly loaded. System cannot autosense the network. Solution Reinstall network drivers. See the Network & Internet Communications Guide on the Documentation and Diagnostics CD. Disable auto-sensing capabilities - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 147
. Replace the network controller. New network card will not boot. Cause Solution New network card may be defective or may not meet industry- Install a working, industry-standard NIC, or change the boot standard specifications. sequence to boot from another source. Cannot connect to network - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 148
the computer power cord before attempting to reseat, install, or remove a DIMM module. For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system. Table D-13 Solving Memory Problems System will not boot or - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 149
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 Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 150
is hot. 1. Make sure the airflow to the computer is not blocked. 2. Make sure the fans are connected and working properly (some fans only operate when needed). 3. Make sure the processor heatsink is installed properly. Power LED flashes Red three times, once every second, followed by a two - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 151
came with the optional device. Table D-15 Solving CD-ROM and DVD Problems System will not boot from CD-ROM or DVD drive. Cause Solution The device is attached to a SATA port that has been disabled Run the Computer Setup utility and ensure the device's SATA in the Computer Setup utility. port - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 152
. Clean CD or DVD with a CD cleaning kit, available from most computer stores. Windows does not detect the CD-ROM or DVD-ROM drive. 1. Use Device Manager to remove or uninstall the device. 2. Restart the computer and let Windows detect the CD or DVD driver. Recording or copying CDs is difficult - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 153
USDT computer boots too slow after removing a CD-ROM or DVD drive. Cause Solution The system is searching for the drive during boot because the Disconnect the drive cable from the system board. drive cable is still attached to the system board. ENWW Solving CD-ROM and DVD Problems 147 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 154
Device: Supported USB Flash Media Device" section of the Service Reference Guide. The computer boots to DOS after making a bootable Drive Key. Cause Solution Drive Key is bootable. Install the Drive Key only after the operating system boots. 148 Appendix D Troubleshooting Without Diagnostics - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 155
table. Table D-17 Solving Front Panel Component Problems A USB device, headphone, or microphone is not recognized by the computer. Cause Solution Device is not properly connected. 1. Turn off the computer. The device does not have power. The correct device driver is not installed. The cable - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 156
cable modem and the computers's RJ-45 connector. (If the connection is good, the "PC" LED light on the front of the cable/DSL modem will be on.) IP some specific information that the Web server can later retrieve.) Windows XP 1. Select Start > Control Panel. 2. Double-click Internet Options. 3. - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 157
D-18 Solving Internet Access Problems (continued) Internet takes too long to download Web sites. Cause Solution Windows XP 1. Select Start > enabled. 9. If there are further problems, click the Troubleshoot button and follow the on-screen instructions. Windows 2000 1. Select Start > Settings - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 158
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 lights on the front of the computer. See Appendix A, POST Error Messages on page 103 to determine possible - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 159
84 beep codes 111 bezel blank, 5.25" drive 62 BIOS Boot Block Emergency Recovery Mode 29 HPQFlash 29 Remote ROM Flash 29 Boot Block Emergency Recovery Mode 29 boot problems 147 bootable device creating 32 DiskOnKey 32, 33 HP Drive Key 32, 33 USB flash media device 32 booting options Full Boot 103 - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 160
expansion slot cover lock removal and replacement 66 F FailSafe Key caution 44 ordering 44 fan, power supply 57 Fault Notification and Recovery HP Client Manager 45 fingerprint identification technology 45 flashing LEDs 111 front bezel removal and replacement 61 front drive bezel 62 front I/O panel - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 161
60 battery 84 expansion card 67 expansion slot cover lock 66 front bezel 61 front I/O panel 76 hard drive 73, 75 heatsink 80 memory 64 power switch assembly 77 processor 81 speaker 78 system board 83 system fan 79 Restore Plus! CD 2 retired solutions 28 ROM flash 28 Remote Flash 29 S safety and - HP Dx2250 | HP Compaq dx2250 Business PC, Service Reference Guide, 1st Edition - Page 162
! CD 2 restoring 19 servicing computer 57 updating and management tools 24 spare part number tamper-resistent wrench 57 Torx T-15 screwdriver 57 speaker, removal and replacement 78 specifications memory 64 static electricity 52 Subscriber's Choice 28 surge-tolerant power supply 45 system board SATA
Service Reference Guide
HP Compaq dx2250 Business PC