HP Compaq dx7300 MT Reference Manual
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HP Compaq dx7300 MT Reference Manual

Business pc 1st edition
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service reference guide
HP Compaq dx7300 Business PC
1st Edition
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, PATA and SATA drives, safety, routine care, connector pin
assignments, POST error messages, and diagnostic indicator lights.
Document Part Number 43361 1-001

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Summary of Contents for HP Compaq dx7300 MT

  • Page 1 HP Compaq dx7300 Business PC 1st Edition This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, PATA and SATA drives, safety, routine care, connector pin assignments, POST error messages, and diagnostic indicator lights.
  • Page 3 Service Reference Guide HP Compaq dx7300 Business PC 1st Edition Document Part Number: 43361 1-001 September 2006...
  • Page 4 UNIX is a registered trademark of The Open Group. The only warranties for 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 shall not be liable for technical or editorial errors or omissions contained herein.

  • Page 5: Table Of Contents

    3.3.7 HP OpenView Client Configuration Manager ........3–6...
  • Page 6 3.4.6 HP Web Site Support ........
  • Page 7 5.5.1 Power Supply Fan ............5–7 5.5.2 Tools and Software Requirements .
  • Page 8 Contents 7.5 Computer Cover ............. 7–8 7.6 Front Drive Bezels .

  • Page 9: Installing The Operating System

    This action points the operating system to the appropriate drivers. Obtain the latest support software, including support software for the operating system from www.hp.com/support . Select the appropriate country and language then, select Download drivers and software, enter the model number of the computer, and press You can also obtain the latest support software on CDs.

  • Page 10: Transferring Files And Settings

    3. Follow the instructions in the wizard. The 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 corrupted, Backup and Recovery Manager allows you to retrieve data or restore the last good system image.

  • Page 11: Setup Utilities And Diagnostics Features

    Establish and manage energy-saving timeouts. ✎ All features identified in this chapter may not be available on all HP products. Power-On Self-Test (POST) POST is a series of diagnostic tests that runs automatically when the system is turned on. POST checks the following items to ensure that the computer system is functioning properly: ■...

  • Page 12: Computer Setup Utilities

    Setup Utilities and Diagnostics Features 2.2 Computer Setup Utilities Use Computer Setup Utilities (F10) to: ■ Change factory default settings. ■ Set the system date and time. ■ Set, view, change, or verify the system configuration, including settings for processor, graphics, memory, audio, storage, communications, and input devices.

  • Page 13: Using Computer Setup (F10) Utilities

    2.2.1 Using Computer Setup (F10) Utilities Computer Setup can be accessed only by turning on the computer or restarting the system. To access the Computer Setup Utilities menu, complete the following steps: 1. Turn on or restart the computer. If you are in Windows, click Start >Shut Down >Restart. 2.

  • Page 14: Computer Setup Menu

    Setup Utilities and Diagnostics Features 2.2.2 Computer Setup Menu Heading Option File System Information About Set Time and Date Flash System ROM (some models) Replicated Setup Default Setup Apply Defaults and Exit Ignore Changes and Exit Save Changes and Exit ✎...
  • Page 15 Heading Option Storage Device Configuration ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx7300 Description Lists all installed BIOS-controlled storage devices. When a device is selected, detailed information and options are displayed.
  • Page 16 Setup Utilities and Diagnostics Features Heading Option Storage Device (continued) Configuration (continued) Storage Options ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2–6 Description Multisector Transfers (ATA disks only) Specifies how many sectors are transferred per multi-sector PIO operation.
  • Page 17 Heading Option Storage Storage Options (continued) (continued) DPS Self-Test ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx7300 Description SATA Emulation Allows you to choose how the SATA controller and devices are accessed by the operating system.
  • Page 18 Setup Utilities and Diagnostics Features Heading Option Storage Boot Order (continued) Security Smart Card Options (some models) Setup Password Power-On Password Password Options (This selection will appear only if a power-on password or setup password is set.) ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2–8 Description Allows you to:...
  • Page 19 Heading Option Security Smart Cover (continued) (some models) Embedded Security (This menu only appears after the Embedded Security Device is made available under Device Security) Device Security Network Service Boot System IDs DriveLock Security ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx7300 Description Allows you to:...
  • Page 20 Setup Utilities and Diagnostics Features Heading Option Security OS Security (continued) Power OS Power Management Hardware Power Management Thermal ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2–10 Description ✎ This selection is in effect only if the processor and operating system being used comprehend and utilize this feature.
  • Page 21 Heading Option Advanced* Power-On Options *For advanced users only ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx7300 Description Allows you to set: • POST mode (QuickBoot, FullBoot, or FullBoot every 1-30 days). •...
  • Page 22 Setup Utilities and Diagnostics Features Heading Option Advanced* Power-On Options (continued) (continued) *For advanced users only Execute Memory Test (some models) BIOS Power-On Onboard Devices PCI Devices PCI VGA Configuration ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2–12 Description Allows you to set: (continued)
  • Page 23 Heading Option Advanced* Bus Options* (continued) *For advanced users only Device Options ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx7300 Description On some models, allows you to enable or disable: •...

  • Page 24: Recovering The Configuration Settings

    The utility simplifies the process of effectively identifying, diagnosing, and isolating hardware issues. The Survey tab is displayed when you invoke HP Insight Diagnostics. This tab shows the current configuration of the computer. From the Survey tab, there is access to several categories of information about the computer.

  • Page 25: Accessing Hp Insight Diagnostics

    It is recommended that you accept the assigned default keyboard for your language unless you want to test your specific keyboard. 6. In the End User License Agreement page, click Agree if you agree with the terms. The HP Insight Diagnostics utility launches with the Survey tab displayed.

  • Page 26: Test Tab

    Setup Utilities and Diagnostics Features Miscellaneous—Shows information obtained from the computer configuration memory (CMOS), system management BIOS data, system board data, and diagnostics component information. 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 system board, processor, chassis, and BIOS, plus internal speaker and PCI bus information.

  • Page 27: Status Tab

    The Clear Error Log button will clear the contents of the Error Log. 2.3.6 Help Tab The Help tab contains an HP Insight Diagnostics tab, an Error Codes tab, and a Test Components tab. The HP Insight Diagnostics tab contains help topics and includes search and index features.

  • Page 28: Saving And Printing Information In Hp Insight Diagnostics

    You can save the information displayed in the HP Insight Diagnostics Status and Log tabs to a diskette or a USB 2.0 HP Drive Key (64MB or higher). You 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.

  • Page 29: Desktop Management

    Support for specific features described in this guide may vary by model or software version. Initial Configuration and Deployment HP computers come with a preinstalled system software image. After a brief software “unbundling” process, the computer is ready to be used.

  • Page 30: Hp Openview Agent

    5. Scroll down and click on the link to install Altiris AClient. 3.1.3 HP Backup and Recovery Manager HP Backup and Recovery Manager can create the Restore Plus! CD set. This set includes the Restore Plus! CD, the Operating system CD, and any Supplemental Software CDs.

  • Page 31: Remote System Installation

    You can order a Recovery Disc Set from HP by calling the HP suport center. Go to the following Web site, select your region, and click the Technical support after you buy link under the Call HP heading to obtain the support center telephone number for your region.

  • Page 32: Hp System Software Manager

    HP System Software Manager (SSM) is a free utility that automates remote deployment of device drivers and BIOS updates for networked HP business PCs. When SSM runs, it silently (without user interaction) determines the revision levels of drivers and BIOS installed on each networked client system and compares this inventory against system software SoftPaqs that have been tested and stored in a central file store.

  • Page 33: Hp Protecttools Security Manager

    (some models only) be installed on your computer, and Smart Card Security for ProtectTools requires an optional smart card and reader. ProtectTools modules may be preinstalled, preloaded, or available for purchase from the HP Web http://www.hp.com/products/security site. Visit 3.3.5 HP Client Premium Suite...

  • Page 34: Hp Openview Client Configuration Manager

    Proven across enterprises of every size and complexity, HP’s adaptive, policy-based model for software Configuration Management, automates the entire software lifecycle management process - from discovery, deployment, and ongoing management through to migration and retirement.

  • Page 35: Intel Vpro-Branded Pcs With Active Management Technology

    Hardware-based isolation and recovery—limit or cut off PC network access, if virus-like activity is detected ✎ For an overview of Intel vPro technology, visit For HP-specific information on Intel vPro technology, see the white papers at http://www.hp.com/support troubleshooting information Resources...

  • Page 36: Proactive Change Notification

    Provisioning Server—allows administrator to assign IP address of provisioning server ❏ Provision Model—allows administrator to configure either enterprise or SMB mode ❏ Set PID and PPS—allows administrator to provide pre-provisioning key (see HP’s white paper, Intel vPro Provisioning) ❏ Un-Provision—allows administrator to reset AMT configuration to factory defaults ❏...

  • Page 37: Subscriber's Choice

    Enabling the system administrator to perform this task remotely on multiple computers results in a consistent deployment of, and greater control over, HP PC BIOS images over the network. It also results in greater productivity and lower total cost of ownership.

  • Page 38: Hpqflash

    If the system successfully reprograms the ROM, the system will automatically power off. 4. Remove the removable media used to upgrade the BIOS. 5. Turn the power on to restart the computer. 3–10 http://www.hp.com/support/files 43361 1-001 Service Reference Guide, dx7300 and enter the product...

  • Page 39: Replicating The Setup

    This allows for faster, more consistent configuration of multiple computers. ✎ Both procedures require a diskette drive or a supported USB flash media device, such as an HP Drive Key. Copying to Single Computer Ä...

  • Page 40: Copying To Multiple Computers

    , and enter the model number of the computer. 43361 1-001 “Supported USB Flash Media http://www.hp.com , click Service Reference Guide, dx7300...

  • Page 41: Creating A Bootable Device

    Supported devices have a preinstalled image to simplify the process of making them bootable. All HP or Compaq and most other USB flash media devices have this preinstalled image. If the USB flash media device being used does not have this image, use the procedure later in this section (see “Unsupported USB Flash Media...

  • Page 42: Unsupported Usb Flash Media Device

    Desktop Management 10. At the A:\ prompt, enter Ä CAUTION: Be sure that you have entered the correct drive letter for the USB flash media device. FORMAT will display one or more warnings and ask you each time whether you want to proceed.

  • Page 43: Dual-State Power Button

    Service Reference Guide, dx7300 FORMAT C: /S Enter and press when the monitor light turns green to enter Enter to bypass the title screen, if necessary. 43361 1-001 Desktop Management key. Ctrl . Format will format the USB flash 3–15...

  • Page 44: Hp Web Site Support

    HP has made the task of locating, accessing, evaluating, and installing the latest support software easier. You can download the software from The Web site contains the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on the HP computer.
  • Page 45 ✎ HP Embedded Security for ProtectTools, the Smart Cover 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: ■...
  • Page 46 Desktop Management Security Features Overview (Continued) Option Device Security Network Service Boot System IDs DriveLock (some models) ✎ For more information about Computer Setup, see the Computer Setup (F10) Utility Guide. Support for security features may vary depending on your specific computer configuration.

  • Page 47: Password Security

    3.5.2 Establishing a Setup Password Using Computer Setup If the system is equipped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at Setup prevents reconfigration of the computer (use of the Computer Setup (F10) utility) until the password is entered.

  • Page 48: Establishing A Power-On Password Using Computer Setup

    Entering a Setup Password If the system is equipped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at If a setup password has been established on the computer, you will be prompted to enter it each time you run Computer Setup.

  • Page 49: Changing A Power-On Or Setup Password

    Changing 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 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

  • Page 50: Drivelock

    If you forget the password, you cannot access the computer. Refer to the Troubleshooting Guide on the Documentation and Diagnostics CD for instructions on clearing passwords. If the system is equiped with an embedded security device, refer to the HP ProtectTools Security www.hp.com Manager Guide at 3.5.4 DriveLock...

  • Page 51: Using Drivelock

    DriveLock. Since the initial configuration of DriveLock is typically performed by a system administrator, a master password should be set first. HP encourages system administrators to set a master password whether they plan to enable DriveLock or keep it disabled.

  • Page 52: Smart Cover Sensor

    4. Before exiting, select File > Save Changes and Exit. Smart Cover Lock The Smart Cover Lock is a software-controllable cover lock featured on some HP computers. This lock prevents unauthorized access to the internal components. Computers ship with the Smart Cover Lock in the unlocked position.

  • Page 53: Cable Lock Provision

    PC component failure (such as processor or power supply) ■ Forgotten password CAUTION: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order Ä this key before you need one (Tamper-resistant wrench PN 166527-001 or tamper-resistant bits PN 166527-002).

  • Page 54: Fingerprint Identification Technology

    If the computer is connected to a network managed by HP Client Manager, the computer sends a fault notice to the network management application. With HP Client Manager, you can also remotely schedule diagnostics to automatically run on all managed PCs and create a summary report of failed tests.

  • Page 55: Sata Hard Drives

    Serial ATA = SATA Parallel ATA = PATA HP only supports the use of SATA hard drives on these models of computer. The USDT model is the only product that supports a PATA optical drive. No PATA drives are supported on any other model.

  • Page 56: Sata Hard Drive Cables

    4.2 SATA Hard Drive Cables 4.2.1 SATA Data Cable Always use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s drives. Current HP desktop products ship with SATA 3.0 Gb/s hard drives.

  • Page 57: Pata Device Information

    4.4 ATA SMART Drives The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as reallocated sector count, spin retry count, and calibration retry count.
  • Page 58 Serial and Parallel ATA Drive Guidelines and Features 4–4 43361 1-001 Service Reference Guide, dx7300...

  • Page 59: Identifying The Chassis, Routine Care, And Disassembly Preparation

    Identifying the Chassis, Routine Care, and This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the Ä...

  • Page 60: Slim Tower (St)

    Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1.2 Slim Tower (ST) 5–2 43361 1-001 Service Reference Guide, dx7300...

  • Page 61: Electrostatic Discharge Information

    5.2 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 appear to be affected at all and can work perfectly throughout a normal cycle.

  • Page 62: Personal Grounding Methods And Equipment

    Identifying the Chassis, Routine Care, and Disassembly Preparation 5.2.3 Personal Grounding Methods and Equipment Use the following equipment to prevent static electricity damage to equipment: ■ Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords.

  • Page 63: Operating Guidelines

    ■ Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow. ■...

  • Page 64: Cleaning The Computer Case

    Identifying the Chassis, Routine Care, and Disassembly Preparation 4. Always unplug the computer before cleaning the keyboard, mouse, or air vents. 5. Disconnect the keyboard before cleaning it. 6. Wear safety glasses equipped with side shields when cleaning the keyboard. 5.4.2 Cleaning the Computer Case Follow all safety precautions in To clean the computer case, follow the procedures described below:...

  • Page 65: Cleaning The Monitor

    Phillips #2 screwdriver ■ Diagnostics software ■ HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002) Service Reference Guide, dx7300 Identifying the Chassis, Routine Care, and Disassembly Preparation Section 5.4.2.

  • Page 66: Screws

    If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

  • Page 67: Lithium Coin Cell Battery

    Batteries, battery packs, and accumulators should not be disposed of together with the general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents. Service Reference Guide, dx7300...
  • Page 68 Identifying the Chassis, Routine Care, and Disassembly Preparation 5–10 43361 1-001 Service Reference Guide, dx7300...

  • Page 69: Removal And Replacement Procedures-Microtower (Mt) Chassis

    Removal and Replacement Procedures— 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 operate properly. ✎ Not all features listed in this guide are available on all computers. Preparation for Disassembly Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Preparation”...

  • Page 70: External Security Devices

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.2 External Security Devices 6.2.1 Installing a Cable Lock The cable lock may be used to secure the computer access panel to the chassis and, at the same time, secure the computer to a fixed object. Insert the cable lock in the location shown below.

  • Page 71: Installing A Padlock

    6.2.2 Installing a Padlock A padlock may be used by itself to secure the access panel to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. Service Reference Guide, dx7300 Removal and Replacement Procedures—...

  • Page 72: Access Panel

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.3 Access Panel 1. Prepare the computer for disassembly Ä CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 2.

  • Page 73: Front Bezel

    6.4 Front Bezel 1. Prepare the computer for disassembly 2. Remove the access panel 3. To remove the front bezel, press in on the two bottom tabs on the left side of the bezel 1 so that they release from the chassis. Then press in on the upper tab on the left side of the bezel so that it releases from the chassis.
  • Page 74 Removal and Replacement Procedures— Microtower (MT) Chassis To reinstall the front bezel: 1. Position the chassis in the upright position. 2. Insert the hooks on the right side of the bezel into the rectangular holes on the chassis 1 then rotate the bezel into place 2 so that the three tabs on the left side of the bezel and the single tab on the upper right corner of the bezel snap into the slots on the chassis.

  • Page 75: Front Drive Bezels

    6.5 Front Drive Bezels Follow these steps before removing or installing a front drive bezel. 1. Prepare the computer for disassembly 2. Remove the access panel 3. Remove the front bezel 6.5.1 5.25" Drive Bezel Blank Press the two retaining tabs on the inside of the large bezel towards the outside of the bezel to release the bezel blank 1.

  • Page 76: Diskette Drive Bezel

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.5.2 Diskette Drive Bezel Press the two upper 1 or the two lower 2 tabs for the diskette drive bezel towards the center of the drive bezel and push the bezel out to remove it from the front bezel. To install a bezel or a bezel blank, reverse the removal procedure.

  • Page 77: Cable Management

    6.6 Cable Management Always follow good cable management practices 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.

  • Page 78: Cable Connections

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.6.1 Cable Connections System board connectors are color-coded to make it easier to find the proper connection. Cable Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Cable Diskette drive 1st SATA Hard drive 1st ODD or 2nd Hard drive if...

  • Page 79: Memory

    6.7 Memory Ä CAUTION: The memory module sockets have gold metal contacts. 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.
  • Page 80 Removal and Replacement Procedures— Microtower (MT) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. 6–12 43361 1-001 Service Reference Guide, dx7300...

  • Page 81: Expansion Cards

    6.8 Expansion Cards 1. Prepare the computer for disassembly 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 3. On the rear of the computer, a sliding slot cover lock secures the expansion card brackets and expansion slot covers in place.
  • Page 82 Removal and Replacement Procedures— Microtower (MT) Chassis 4. Before installing an expansion card, remove the expansion slot cover or the existing expansion card. ✎ Before removing an installed expansion card, disconnect any cables that may be attached to the expansion card. a.
  • Page 83 c. If removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card and carefully rock the card back and forth until the connectors pull free from the socket. Pull the expansion card straight up from the socket then away from the inside of the chassis to release it from the chassis frame.
  • Page 84 Removal and Replacement Procedures— Microtower (MT) Chassis 6. If replacing or adding a new expansion card, hold the card just above the expansion slot on the system board then move the card toward the rear of the chassis 1 so that the bracket on the card is aligned with the open slot on the rear of the chassis.

  • Page 85: Drives

    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 HP factory-installed files. 6.9.1 Drive Positions...

  • Page 86: Removing A Drive

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.9.2 Removing a Drive 1. Remove any removable media, such as a compact disc or diskette, from the drive. 2. Prepare the computer for disassembly 3. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 4.

  • Page 87: Disconnecting Diskette Drive Cables

    Disconnecting Diskette Drive Cables Releasing the Drives 6. A latch drive bracket with release tabs secures the drives in the drive bay. Lift the release tab on the latch drive bracket 1 for the drive you want to remove, then slide the drive from its drive bay 2.

  • Page 88: Installing A Drive

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.9.3 Installing a Drive CAUTION: To prevent loss of work and damage to the computer or drive: Ä ■ If you are inserting or removing a hard drive, shut down the operating system properly, then turn off the computer.
  • Page 89 3. Reconnect the power and data cables to the drive as shown in the following illustrations. ✎ Refer to Chapter 4, “Serial and Parallel ATA Drive Guidelines and Features” attaching the cabling to get optimum performance. Connecting Optical or Hard Drive Cables ✎...
  • Page 90 Removal and Replacement Procedures— Microtower (MT) Chassis 4. Install the front bezel 5. Install the access panel 6. Turn on the computer. ✎ If you replaced the primary hard drive, the Restore Plus! CD may be used to restore the operating system, software drivers, and/or any software applications that were preinstalled on the computer.

  • Page 91: Chassis Fan

    6.10 Chassis Fan 1. Prepare the computer for disassembly 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 3. Disconnect the power cable that connects the chassis fan to the system board 1. 4.

  • Page 92: Front I/O Panel Housing Assembly

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.1 1 Front I/O Panel Housing Assembly 1. Prepare the computer for disassembly 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 3.

  • Page 93: Front I/O Devices

    6.12 Front I/O Devices 1. Prepare the computer for disassembly 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 3. Remove the front I/O panel assembly 4.

  • Page 94: Power Switch Assembly

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.13 Power Switch Assembly 1. Prepare the computer for disassembly 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 3.

  • Page 95: Heatsink

    6.14 Heatsink 1. Prepare the computer for disassembly 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 3. Disconnect the heatsink fan cable from the system board. 4.
  • Page 96 Removal and Replacement Procedures— Microtower (MT) Chassis When reinstalling the heatsink, make sure that its bottom has been cleaned with an alcohol wipe and fresh thermal grease has been applied to the top of the processor. Ä CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heatsink on the processor.

  • Page 97: Processor

    6.15 Processor 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Disconnect the heatsink control cable from the system board and remove the heatsink (Section 6.14). 4. Rotate the locking lever to its full open position 1. 5.
  • Page 98 After 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 http://h18000.www1.hp.com/support/files found on the Web at: 6–30...

  • Page 99: Speaker

    6.16 Speaker 1. Prepare the computer for disassembly 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 3. Move/remove any components necessary to gain access to the speaker. 4.

  • Page 100: Power Supply

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.17 Power Supply Å WARNING: Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer.
  • Page 101 Removal and Replacement Procedures— Microtower (MT) Chassis 5. Pull the power supply towards the front of the chassis while depressing the two sets of retaining clips 1 to allow the power supply to move far enough to lift it from the chassis 2. To install the power supply, reverse the removal procedure.

  • Page 102: System Board

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.18 System Board 1. Prepare the computer for disassembly 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 3.

  • Page 103: Battery

    In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents. CAUTION: Static electricity can damage the electronic components of the computer or optional Ä...

  • Page 104: 1Type 1 Battery Holder

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.19.1 Type 1 Battery Holder 1. Lift the battery out of its holder. 2. Slide the replacement battery into position, positive side up. 3. The battery holder automatically secures the battery in the proper position. 4.

  • Page 105: 2Type 2 Battery Holder

    6.19.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out 1. 2. To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up 2.

  • Page 106: 3Type 3 Battery Holder

    Removal and Replacement Procedures— Microtower (MT) Chassis 6.19.3 Type 3 Battery Holder 1. Pull back on the clip 1 that holds the battery in place, then remove the battery 2. 2. Insert the new battery and position the clip back in place. 3.

  • Page 107: Preparation For Disassembly

    Removal and Replacement Procedures— 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 operate properly. ✎ Not all features listed in this guide are available on all computers. Preparation for Disassembly Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly safety procedures.
  • Page 108 Removal and Replacement Procedures— Slim Tower (ST) Chassis 8. Lift the computer of the stand. 7–2 43361 1-001 Service Reference Guide, dx7300...

  • Page 109: Unlocking The Smart Cover Lock

    Unlocking the Smart Cover Lock If you have locked the Smart Cover Lock use Computer Setup to unlock the lock. Refer to the Desktop Management Guide on the Documentation and Diagnostics CD for more information about the Smart Cover Lock.
  • Page 110 Removal and Replacement Procedures— Slim Tower (ST) Chassis To reattach the Smart Cover Lock: 1. Install the Smart Cover Lock assembly on the inside of the rear panel with the metal arm 1 wrapped around the air vent grid on the back of the chassis. 2.

  • Page 111: Hood Sensor

    Hood Sensor 1. Prepare the computer for disassembly. 2. Remove the computer cover. 3. Remove the special security clip cage. 4. Raise the power supply to its full upright position. 5. Disconnect the hood sensor cable from the system board. 6.

  • Page 112: External Security Devices

    Removal and Replacement Procedures— Slim Tower (ST) Chassis External Security Devices 7.4.1 Security Clip A special clip is required to secure the computer from intrusion. This clip must be installed before installing the computer cover. 7.4.2 Cable Lock The cable lock may be used to secure the computer cover to the chassis and, at the same time, secure the computer to a fixed object.

  • Page 113: Padlock

    7.4.3 Padlock A padlock may be used by itself to secure the computer cover to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. Service Reference Guide, dx7300 Removal and Replacement Procedures—...

  • Page 114: Computer Cover

    Removal and Replacement Procedures— Slim Tower (ST) Chassis Computer Cover 1. Prepare the computer for disassembly Ä CAUTION: Before removing the computer cover, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 1.

  • Page 115: Front Drive Bezels

    Front Drive Bezels 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the drive bezel by pushing the top tab on the right side of the larger front bezel as shown 1 and rotating the drive bezel away from the larger front bezel 2. ✎...
  • Page 116 Removal and Replacement Procedures— Slim Tower (ST) Chassis There are three drive bezel inserts that are available. 7–10 Item Description Diskette drive bezel Hard drive bezel 3.5” drive bezel 43361 1-001 Service Reference Guide, dx7300...

  • Page 117: Cable Management

    Cable Management The Small Form Factor chassis is a very compact computer and proper routing of the internal cables is critical to the operation of the computer. Follow good cable management practices when working inside the computer. ■ Keep cables away from major heat sources like the heatsink. ■...

  • Page 118: Cable Connections

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.7.1 Cable Connections System board connectors are color-coded to make it easier to find the proper connection. Cable Power Supply Power Supply Power Supply Power Supply Power Supply Power Supply Cable Diskette drive 1st Hard drive 1st ODD or 2nd Hard drive if no ODD present...

  • Page 119: Memory

    Memory Ä CAUTION: The memory module sockets have gold metal contacts. 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.

  • Page 120: Vertically Oriented Expansion Card

    Removal and Replacement Procedures— Slim Tower (ST) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. ✎ If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor.

  • Page 121: Pci Expansion Card

    7.9.2 PCI Expansion Card 1. If you have locked the Smart Cover Lock, restart the computer and enter Computer Setup to unlock the lock. 2. Turn off the computer properly through the operating system, then turn off any external devices. 3.
  • Page 122 Removal and Replacement Procedures— Slim Tower (ST) Chassis 8. Install the expansion card by sliding the card under the slot cover retention latch then pressing the card down into the slot on the system board. ✎ Be sure not to scrape other components in the chassis when installing an expansion card. 9.

  • Page 123: Pci Express Expansion Card

    7.9.3 PCI Express Expansion Card To remove a PCI Express expansion card: 1. If you have locked the Smart Cover Lock, restart the computer and enter Computer Setup to unlock the lock. 2. Turn off the computer properly through the operating system, then turn off any external devices.

  • Page 124: Pci Riser Card Assembly And Backwall

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.10 PCI Riser Card Assembly and Backwall 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2). 2. Prepare the computer for disassembly 3. Remove the computer cover 4.
  • Page 125 7. Remove the SmartCover lock from the backwall of the chassis using the special security wrench and disconnect its cable from the system board. 8. Disconnect the data and power cables from the system board. 9. Disconnect the “Serial A” cable from the system board, remove the two screws that secure the serial connector to the backwall, then remove the serial connector.
  • Page 126 Removal and Replacement Procedures— Slim Tower (ST) Chassis 12. Remove the long mounting screw that secures the system board tray to the chassis. 13. Slide the system board tray assembly towards the front of the chassis about 6 cm (1/4 inch) and lift the system board up and out of the chassis.
  • Page 127 14. Remove the three screws that secure the backwall assembly to the chassis 1, then slide the backwall assembly a few millimeters/inches toward the space vacated by the power supply and lift out(2. 15. Slide the new backwall onto the rear chassis 1. Secure it with the three screws removed from the old backwall 2.
  • Page 128 Removal and Replacement Procedures— Slim Tower (ST) Chassis 16. Install the serial connector into the new backwall using the two screws that were removed from the serial connector in a previous step. Reconnect the “Serial A” cable to the system board.
  • Page 129 Removal and Replacement Procedures— Slim Tower (ST) Chassis 23. Rotate the drive cage back down to its normal position. Be sure to use proper cable handling and placement precautions. Ä CAUTION: Cables are very sensitive. Overbending, creasing, or pinching can damage cables. 24.

  • Page 130: Drives

    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 HP factory-installed files. 7.1 1.1 Drive Positions...

  • Page 131: 2Optical Drive

    7.1 1.2 Optical Drive CAUTION: All removable media should be taken out of the drives before removing the drive from the Ä computer. ✎ An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD+R/RW, or CD-RW/DVD Combo drive. 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock 7.2).
  • Page 132 Removal and Replacement Procedures— Slim Tower (ST) Chassis 6. Rotate the drive cage down to its normal position before trying to remove the drive. 7. Press the green drive retainer latch and slide the drive forward and lift it from the drive cage. 8.

  • Page 133: 3External 3.5-Inch Drive

    7.1 1.3 External 3.5-inch Drive 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock 7.2). 2. Prepare the computer for disassembly 3. Remove the computer cover 4. Remove the optical drive 5. Rotate the drive cage to its upright position by pulling on the green-tabbed lip. 6.
  • Page 134 Removal and Replacement Procedures— Slim Tower (ST) Chassis 8. Press the green drive retention latch 1 located on the side of the diskette drive to disengage the drive from the drive cage and slide the diskette drive forward approximately 6mm (1/4 inch) 2.

  • Page 135: 4Primary Hard Drive

    Ä 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 HP factory-installed files. Ä CAUTION: To prevent loss of work and damage to the computer or drive: ■...
  • Page 136 Removal and Replacement Procedures— Slim Tower (ST) Chassis 5. Remove the security clip that secures the backwall to the power supply. 6. Rotate the power supply to its full upright position. 7–30 43361 1-001 Service Reference Guide, dx7300...
  • Page 137 7. Disconnect the power and data cables from the back of the hard drive. 8. Pull the tab that locks the drive in place away from the drive 1, slide the hard drive toward the front of the computer, then lift it up and out of the bay 2. To install a hard drive, reverse the above procedure.
  • Page 138 You will need a Torx T-15 screwdriver to remove and re-install the guide screws. HP has provided four extra 6-32 standard guide screws on the front of the chassis, under the computer cover. The 6-32 standard guide screws are silver and are used only for the hard drive.

  • Page 139: Fan Shroud

    7.12 Fan Shroud 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Lift up on the fan shroud to remove it from the computer. When replacing the shroud, make sure that it does not get caught on the wires from either the fan or the speaker.

  • Page 140: Front I/O Devices

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.13 Front I/O Devices 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the two screws that secure the front I/O device to the chassis 1. 4. Rotate the drive cage to its full upright position. 5.

  • Page 141: Heatsink

    7.14 Heatsink 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the fan shroud 4. Disconnect the fan control cable from the system board. 5. Loosen the four captive screws that secure the heatsink to the system board tray. CAUTION: Heatsink retaining screws should be removed in diagonally opposite pairs (as in an X) to Ä...

  • Page 142: Processor

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.15 Processor 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the fan shroud 4. Disconnect the heatsink control cable from the system board and remove the heatsink (Section 7.14).
  • Page 143 After 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 http:\\h18000.www1.hp.com/support/files found on the Web at: Service Reference Guide, dx7300 Removal and Replacement Procedures—...

  • Page 144: Speaker

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.16 Speaker 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the fan shroud 4. Remove any memory modules that might interfere with the screwdriver used for removing the speaker.

  • Page 145: Power Supply

    7.17 Power Supply Å WARNING: Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer. 1.
  • Page 146 Removal and Replacement Procedures— Slim Tower (ST) Chassis 8. Rotate the power supply to its full upright position 1, then lift the power supply straight up and out of the chassis 2. To install the power supply, reverse the removal procedure. CAUTION: When installing the power supply cables, make sure they are properly positioned so they Ä...

  • Page 147: Chassis Fan

    7.18 Chassis Fan 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the fan shroud 4. Disconnect the chassis fan cable from the system board. 5. Remove the four screws that secure the fan to the chassis, then remove the fan from the chassis.

  • Page 148: System Board

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.19 System Board 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove all PCI and PCI Express expansion boards 4. Remove the fan shroud from the chassis 5. Remove the chassis fan from the chassis 6.
  • Page 149 Removal and Replacement Procedures— Slim Tower (ST) Chassis 9. Disconnect the serial port from the system board. 10. Disconnect the balance of the cables from the system board. 11. Remove the long mounting screw that secures the system board tray to the chassis. Service Reference Guide, dx7300 43361 1-001 7–43...
  • Page 150 Removal and Replacement Procedures— Slim Tower (ST) Chassis 12. Slide the system board tray assembly towards the front of the chassis, about 6 mm (1/4 inch) and lift the system board up and out of the chassis. 13. Remove the heatsink from the system board and the system board tray To install the system board, reverse the removal procedure.

  • Page 151: Drive Clutch Components

    7.20 Drive Clutch Components 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove the optical drive and any other drive in the rotating drive cage Section 7.11.3). 4. Remove the chassis fan 5. Remove the system board 6.
  • Page 152 Removal and Replacement Procedures— Slim Tower (ST) Chassis 8. Hold the drive cage in the upright position while removing the two screws that secure the clutch finger assembly to the drive cage. ✎ The clutch finger assembly doe not have to be removed to remove the power switch. To replace the drive clutch components, reverse the removal procedure.

  • Page 153: Power Switch Assembly

    7.21 Power Switch Assembly 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove all drives from the rotating drive cage 4. Remove the chassis fan 5. Remove the system board 6. Remove the drive ckutch base 7.

  • Page 154: Battery

    Batteries, battery packs, and accumulators should not be disposed of together with the general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, their authorized partners, or their agents. Ä...

  • Page 155: 1Type 1 Battery Holder

    7.22.1 Type 1 Battery Holder 1. Lift the battery out of its holder. 2. Slide the replacement battery into position, positive side up. 3. The battery holder automatically secures the battery in the proper position. 4. Replace the computer access panel. 5.

  • Page 156: 2Type 2 Battery Holder

    Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.22.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out 2.

  • Page 157: Type 3 Battery Holder

    7.22.3 Type 3 Battery Holder 1. Pull back on the clip 1 that holds the battery in place, then remove the battery 2. 2. Insert the new battery and position the clip back in place. 3. Replace the computer access panel. 4.
  • Page 158 Removal and Replacement Procedures— Slim Tower (ST) Chassis 7–52 43361 1-001 Service Reference Guide, dx7300...

  • Page 159: 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 Mouse Connector and Icon Ethernet BNC Connector and Icon Service Reference Guide, dx7300 Connector Pin Assignments Signal Data...

  • Page 160: Ethernet Aui

    Connector Pin Assignments Ethernet RJ-45 Connector and Icon Ethernet AUI Signal Ground Negative AUI Differential Collision Positive AUI Differential Collision Negative AUI Differential Transmit Positive AUI Differential Transmit Ground Ground Negative AUI Differential Receive Parallel Interface Signal Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3...
  • Page 161 Serial Interface, Powered and Non-Powered Connector and Icon Connector and Icon Microphone Connector and Icon (1/8” miniphone) 1 2 3 1 2 3 Headphone Connector and Icon (1/8” miniphone) 1 2 3 Line-In Audio Connector and Icon (1/8” miniphone) 1 2 3 Service Reference Guide, dx7300 Signal Carrier Detect (12V if powered)

  • Page 162: External Infrared Transceiver

    Connector Pin Assignments Line-Out Audio Connector and Icon (1/8” miniphone) 1 2 3 External Infrared Transceiver Signal Transmit Receive Ground Monitor Signal Red Analog Green Analog Blue Analog Not used Ground A–4 Signal 1 (Tip) Audio_Out_Left 2 (Ring) Audio_Out_Right 3 (Shield) Ground Connector and Icon Signal...
  • Page 163 ATA/ATAPI (IDE) Standard Drive Cable Signal Reset Ground DD10 DD1 1 DD12 DD13 CD-ROM 50-Pin Connector Signal Audio L-ch Audio R-ch Audio GND RESET- DD10 DD1 1 Service Reference Guide, dx7300 Connector Signal DD14 DD15 Ground (Key) DMARQ Ground DIOW Ground DIOR Ground...
  • Page 164 Connector Pin Assignments 24-Pin Power (CMT and MT models) Signal +3.3 V +3.3 V +5 V +5 V 24-Pin MicroFit Power (USDT, SFF, and ST models) Signal +5 Vaux +5 V +5 V PS_ON 4-Pin Power (for CPU) (MT and CMT models) Connector and Icon A–6 Connector...
  • Page 165 6-Pin Power (for CPU) (USDT, SFF, and ST models) Connector and Icon SATA Data and Power Signal Ground V 3.3 Ground V 12 *S = Data, P = Power Service Reference Guide, dx7300 Signal 12 V CPU 12 V CPU +12 V Drive Connector Signal...
  • Page 166 Connector Pin Assignments PCI Express x1, x4, x8, and x16 PCI Express Connector Pin A Signal Signal PRSNT1# JTAG3 +12V JTAG4 +12V JTAG5 +3.3v JTAG2 +3.3v PERn(2) RSVD RSVD PERp3 PERn3 PERp4 PERp9 PERp8 PERn9 PERn8 PERp10 PERp14 PERn15 PERn14 PERp15 Pin B information is on the next page Notes:...
  • Page 167 PCI Express x1, x4, x8, and x16 PCI Express Connector Pin B Signal Signal +12V SMDAT +12V RSVD +3.3v JTAG1 SMCLK 3.3vAux PRSNT2# PETp3 PETn3 PETp4 PETn4 RSVD PETn8 PETp10 PETp9 PETn10 PETn9 PRSNT2# RSVD PETp15 PETn15 Notes: x1 PCI Express uses pins 1- 1 8 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-82...

  • Page 168: Dvi Connector

    Connector Pin Assignments DVI Connector Signal T.M.D.S. Data2- T.M.D.S. Data2+ T.M.D.S. Data2/4 Shield T.M.D.S. Data4- T.M.D.S. Data4+ DDC Clock DDC Data No Connect T.M.D.S. Data1- T.M.D.S. Data1+ T.M.D.S. Data1/3 Shield T.M.D.S. Data3- A–10 Connector and Icon Signal T.M.D.S. Data3+ +5V Power Ground (for +5V) Hot Plug Detect T.M.D.S.

  • Page 169: General 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 switches are equipped with internal switches that sense the incoming voltage and automatically switch to the proper voltage.
  • Page 170 Power Cord Set Requirements Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Australia (1) Austria (1) Belgium (1) Canada (2) Denmark (1) Finland (1) France (1) Germany (1) 1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 0.75mm 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.

  • Page 171: Post Error Messages

    POST Error Messages An error message results if the Power-On Self-Test (POST) encounters a problem. This test runs when the system is turned on, checking assemblies within the computer and reporting any errors found. Not all computers use all of the codes listed. POST Error Messages Screen Message 101-Option ROM...

  • Page 172: Onboard Devices

    Windows utilities. 2. Make sure memory module(s) are installed properly. 3. If third party memory has been added, test using HP-only memory. 4. Verify proper memory module type. RAM failure. 1. Run Computer Setup (F10 Setup) or Windows utilities.
  • Page 173 POST Error Messages (Continued) Screen Message 219-ECC Memory Module Detected. ECC Modules not supported on this platform 301-Keyboard Error 303-Keyboard Controller Error 304-Keyboard or System Unit Error 404-Parallel Port Address Conflict Detected 410-Audio Interrupt Conflict 41 1-Network Interface Card Interrupt Conflict 501-Display Adapter Failure 510-Flash Screen image...
  • Page 174 POST Error Messages POST Error Messages (Continued) Screen Message 51 1-CPU, CPUA, or CPUB Fan not detected 512-Chassis, rear chassis, or front chassis fan not detected 514-CPU or Chassis Fan not detected. 601-Diskette Controller Error 605-Diskette Drive Type Error 610-External Storage Device Failure 61 1-Primary Floppy Port Address Assignment...
  • Page 175 POST Error Messages (Continued) Screen Message 918-Front USB Not Connected 921-Device in PCI Express slot failed to initialize. 1 151-Serial Port A Address Conflict Detected 1 152-Serial Port B Address Conflict Detected 1 155-Serial Port Address Conflict Detected 1201-System Audio Address Conflict Detected 1202-MIDI Port Address...
  • Page 176 Protection System test under error message.) Storage > DPS Self-test. 2. Apply firmware patch if applicable (available at www.hp.com/support). 3. Back up contents and replace hard drive. One or more SATA Ensure SATA connectors are used in devices are improperly ascending order.
  • Page 177 POST Error Messages (Continued) Screen Message 2201-MEBx Module did not checksum correctly 2202-PMM Deallocation Error during MEBx cleanup 2203-Setup error during MEBx execution 2204-Inventory error during MEBx execution Service Reference Guide, dx7300 Probable Cause Memory error during 1. Reboot the computer. POST execution of the 2.
  • Page 178 SP5572.EXE (SNZERO.EXE). 2. Run Computer Setup and try to enter serial number under Security, System ID, then save changes.

  • Page 179: Post Diagnostic Front Panel Leds And Audible Codes

    POST Diagnostic Front Panel LEDs and Audible Codes This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them. WARNING: When the computer is plugged into an AC power source, voltage is always applied to the Å...
  • Page 180 DIMM module. 1. Reseat DIMMs. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. 43361 1-001 Service Reference Guide, dx7730...
  • Page 181 1. Reflash the ROM with the latest BIOS based on bad image. See the “Boot Block checksum. Emergency Recovery Mode” section of the Desktop Management Guide on the Documentation and Diagnostics 2. Replace the system board. 43361 1-001 POST Error Messages...
  • Page 182 POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Red Power LED flashes nine times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved.
  • Page 183 POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps System does not None power on and LEDs are not flashing. Service Reference Guide, dx7300 Possible Cause Recommended Action System unable to Press and hold the power button for less power on.
  • Page 184 POST Error Messages C–14 43361 1-001 Service Reference Guide, dx7730...

  • Page 185: Preliminary Checklist

    Troubleshooting Without Diagnostics Preliminary Checklist This section describes some simple, preliminary tests and guidelines for troubleshooting the computer without using the diagnostics. ■ Are the computer and monitor connected to a working electrical outlet? ■ Is the voltage select switch is set to the appropriate voltage for your region (115V or 230V)? ■...

  • Page 186: Solving Minor Problems

    Troubleshooting Without Diagnostics Solving Minor Problems Solving Minor Problems Problem Computer appears locked up and will not turn off when the power button is pressed. Computer will not respond to USB keyboard or mouse. Computer date and time display is incorrect. Computer appears to pause periodically.
  • Page 187 Solving Minor Problems (Continued) Problem Cannot remove computer cover or access panel. Poor performance is experienced. Service Reference Guide, dx7300 Cause Possible Solution Smart Cover Lock, 1. Unlock the Smart Cover Lock featured on some using Computer Setup. computers, is locked. 2.
  • Page 188 Troubleshooting Without Diagnostics Solving Minor Problems (Continued) Problem 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 continue for five iterations after which the LED flashes will continue until the problem is resolved.

  • Page 189: Solving Power Supply Problems

    Solving Power Supply Problems Solving Power Supply Problems Problem Power supply shuts down intermittently. 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 continue for five iterations after which the LED flashes will continue until the...
  • Page 190 Troubleshooting Without Diagnostics Solving Power Supply Problems (Continued) Problem Power LED flashes Red, four times, once every second, followed by a two second pause, and the computer beeps four times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved.

  • Page 191: Solving Diskette Problems

    Solving Diskette Problems Solving Diskette Problems Problem Diskette drive light stays on. Drive not found. Diskette drive cannot write to a diskette. Cannot format diskette. Service Reference Guide, dx7300 Cause Solution Diskette is damaged. In Microsoft Windows XP, right-click Start, click Explore, and select a drive.
  • Page 192 Troubleshooting Without Diagnostics Solving Diskette Problems (Continued) Problem Cannot format diskette. (continued) A problem has occurred with a disk transaction. Diskette drive cannot read a diskette. “Invalid system disk” message is displayed. Cannot Boot to Diskette. D–8 Cause Solution Legacy diskette writes Enter Computer Setup and enable are disabled in Legacy Diskette Write in...

  • Page 193: Solving Hard Drive Problems

    Solving Hard Drive Problems Solving Hard Drive Problems Problem Hard drive error occurs. Disk transaction problem. Drive not found (identified). Nonsystem disk/NTLDR missing message Service Reference Guide, dx7300 Cause Solution Hard disk has bad Use a utility to locate and block sectors or has failed.
  • Page 194 Troubleshooting Without Diagnostics Solving Hard Drive Problems (Continued) Problem Nonsystem disk/NTLDR missing message (continued) Computer will not boot from hard drive. D–10 Cause Solution System is trying to start 1. Insert a bootable diskette into from the hard drive, but the diskette drive and restart the the hard drive may have computer.

  • Page 195: Solving Media Card Reader Problems

    Solving Hard Drive Problems (Continued) Problem Computer will not boot from hard drive. (continued) Computer seems to be locked up. Solving Media Card Reader Problems Solving Media Card Reader Problems Problem Media card will not work in a digital camera after formatting it in Microsoft Windows XP.
  • Page 196 PCI media card reader to an available card, which is not USB connector on the computer’s supported on the HP system board. If no connector is Desktop BIOS. available, plug the bootable device into a different USB port on the computer.

  • Page 197: Solving Display Problems

    Solving Display Problems Solving Display Problems Problem Blank screen (no video). Service Reference Guide, dx7300 Cause Solution Monitor is not turned on Turn on the monitor and check that and monitor light is not the monitor light is on. Bad monitor. Try a different monitor.
  • Page 198 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Pre-video graphics For systems with a graphics card: error.
  • Page 199 Solving Display Problems (Continued) Problem Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computer beeps seven times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved.
  • Page 200 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 1. Reseat the graphics card. seated properly or is 2. Replace the graphics card. bad.

  • Page 201: Solving Audio Problems

    Solving Display Problems (Continued) Problem Certain typed symbols do not appear correct. Solving Audio Problems Solving Audio Problems Problem Sound cuts in and out. Sound does not come out of the speaker or headphones. Service Reference Guide, dx7300 Cause Solution The font you are using Use the Character Map to locate the does not support that...
  • Page 202 Troubleshooting Without Diagnostics Solving Audio Problems (Continued) Problem Sound does not come out of the speaker or headphones. (continued) Sound from headphones is not clear or muffled. D–18 Cause Solution External speakers See the sound card documentation plugged into the wrong for proper speaker connection.

  • Page 203: Solving Printer Problems

    Solving Audio Problems (Continued) Problem Computer appears to be locked up while recording audio. Solving Printer Problems Solving Printer Problems Problem Printer will not print. Printer will not turn on. Printer prints garbled information. Printer is offline. Service Reference Guide, dx7300 Cause Solution The hard disk may be...

  • Page 204: Solving Keyboard And Mouse Problems

    Cursor will not move using the arrow keys on the keypad. D–20 Cause Solution Keyboard connector 1. On the Windows Desktop, click Start. is not properly connected. 2. Click Shut Down. The Shut Down Windows dialog box is displayed. 3. Select Shut down.
  • Page 205 Solving Keyboard and Mouse Problems (Continued) Problem Mouse does not respond to movement or is too slow. Mouse will only move vertically or horizontally, or movement is jerky. Service Reference Guide, dx7300 Cause Solution 1. Press Ctrl and Esc at the same Mouse connector is not properly plugged time (or press the Windows...

  • Page 206: Solving Hardware Installation Problems

    Troubleshooting Without Diagnostics Solving Hardware Installation Problems You may need to reconfigure the computer when you add or remove hardware, such as an additional diskette drive. If you install a plug and play device, Windows XP automatically recognizes the device and configures the computer. If you install a non–plug and play device, you must reconfigure the computer after completing installation of the new hardware.
  • Page 207 ✎ DIMM 1 must always be installed. 3. Replace third-party memory with HP memory. 4. Replace the system board. Graphics card is not For systems with a graphics card: seated properly or is 1. Reseat the graphics card. Power bad, or system board is on the system.

  • Page 208: Solving Network Problems

    Troubleshooting Without Diagnostics Solving Network Problems These guidelines do not discuss the process of debugging the network cabling. Solving Network Problems Problem Wake-on-LAN feature is not functioning. Network driver does not detect network controller. Network status link light never flashes. ✎...
  • Page 209 Solving Network Problems (Continued) Problem Diagnostics reports a failure. Diagnostics passes, but the computer does not communicate with the network. Network controller stopped working when an expansion board was added to the computer. Network controller stops working without apparent cause. Service Reference Guide, dx7300 Cause Solution...
  • Page 210 Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Network controller stops working without apparent cause. (continued) New network card will not boot. Cannot connect to network server when attempting Remote System Installation. System setup utility reports unprogrammed EEPROM. D–26 Cause Solution The network controller is Replace the system board.

  • Page 211: Solving Memory Problems

    DIMM module. For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the system will not boot the operating system.

  • Page 212: Solving Processor Problems

    2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Cause Solution Processor is hot. 1. Make sure the airflow to the computer is not blocked.

  • Page 213: Solving Cd-Rom And Dvd Problems

    Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems Problem System will not boot from CD-ROM or DVD drive. Drive not found (identified). CD-ROM or DVD devices are not detected or driver is not loaded. Service Reference Guide, dx7300 Cause Solution The device is attached...
  • Page 214 Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems (Continued) Problem Movie will not play in the DVD drive. Cannot eject compact disc (tray-load unit). CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start. Recording audio CDs is difficult or impossible.

  • Page 215: Solving Drive Key Problems

    Solving Drive Key Problems Solving Drive Key Problems Problem Drive Key is not seen as a drive letter in Windows XP. USB Drive Key not found (identified). System will not boot from USB Drive Key. The computer boots to DOS after making a bootable Drive Key.

  • Page 216: Solving Front Panel Component Problems

    Troubleshooting Without Diagnostics Solving Front Panel Component Problems Solving Front Panel Component Problems Problem A USB device, headphone, or microphone is not recognized by the computer. D–32 Cause Solution It is not properly 1. Turn off the computer. connected. 2. Reconnect the device to the front of the computer and restart the computer.

  • Page 217: Solving Internet Access Problems

    Solving Internet Access Problems Solving Internet Access Problems Problem Unable to connect to the Internet. Cannot automatically launch Internet programs. Service Reference Guide, dx7300 Cause Solution Internet Service Provider Verify Internet settings or contact the (ISP) account is not set ISP for assistance.
  • Page 218 Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Internet takes too long to download Web sites. D–34 Cause Solution Modem is not set up Verify that the correct modem speed properly. and COM port are selected. For Windows XP 1.

  • Page 219: Solving Software Problems

    If you have installed an operating system other than the factory-installed operating system, check to be sure it is supported on the system. Solving Software Problems Problem Computer will not continue and no HP logo screen has appeared. Computer will not continue after HP logo screen has appeared.
  • Page 220 Troubleshooting Without Diagnostics D–36 43361 1-001 Service Reference Guide, dx7300...
  • Page 221 System Board and Riser Board Reference These reference designators are used on most but not all HP system and riser boards. Designator CR35 E49/JP49 J1 1 J20 - 29 J31 - J35 Service Reference Guide, dx7300 Component Battery socket/Battery LED - 5V_Aux (on)
  • Page 222 System Board and Riser Board Reference Designators Designator Component (Continued) Stacked mouse (Top)/keyboard (Bottom) connector Video connector, VGA Primary single USB connector Secondary single USB port Microphone jack Line-in jack Line-out jack Headphone jack Volume control Double-stacked headphone (Bottom)/microphone (Top) connector Double-stacked line-in (Top)/line-out (Bottom) connector Stacked serial/audio connector Primary double-stack USB, Top = Port 2, Bottom = Port 1...
  • Page 223 Designator Component (Continued) Header for front panel audio Header for front panel USB Internal USB connector 1 Internal USB connector 2 MultiBay header SCSI LED connector PCI extender slot (female) Blade PC graphics connector (outboard) Blade PC graphics connector (inboard) Second serial port Primary serial port Double stack serial port, Top = Serial B, Bottom = Serial A...
  • Page 224 System Board and Riser Board Reference Designators Designator Component (Continued) Clock chip 64 bit Bridge LOM1 U1 1 LOM1 EEPROM LOM1 PHY Audio Codec Audio amplifier LOM2 LOM2 EEPROM LOM2 PHY SPI ROM - SOIC-8 footprint Fan controller SPI ROM - SO16 footprint TMDS controller Parallel port diode array First serial port transceiver...

  • Page 225: Dimm Sockets

    The dx7300 and dc7700 series computers with Intel-based processors come with double data rate 2 synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules (DIMMs). Ä CAUTION: DDR and DDR2 memory modules are not interchangeable. DDR2-SDRAM DIMMs The memory sockets on the system board can be populated with up to four industry-standard DIMMs.
  • Page 226 Memory The system board shown may differ from the one in your product. Item The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending on how the DIMMs are installed. ■ The system will operate in single channel mode if the DIMM sockets are populated in one channel only.
  • Page 227 4-pin power pin assignments A–6 24-pin MicroFit power pin assignments A–6 24-pin power pin assignments A–6 6-pin power pin assignments A–7 access panel MT removal and replacement 6–4 Active Management Technology 3–7 adding devices 1–1 Altiris, Deployment Solution Agent 3–2 asset tracking 3–16 ATA/ATAPI (IDE) drive cable pin assignments A–5...
  • Page 228 Index Storage menu 2–5 configuration settings, recovering 2–14 configuring power button 3–15 connections SFF system board 6–10 7–12 connector pin assignments A–1 Convertible Minitower See CMT country-specific power cord set requirements B–2 cover lock, smart 3–24 date and time display problems D–2 DDR2 memory F–1 deleting password 3–21 delimiter characters, table 3–22...
  • Page 229 MT removal and replacement 6–27 SFF removal and replacement 7–35 hood sensor SFF removal and replacement 7–5 HP Backup and Recovery Manager 1–2 HP Client Foundation Suite 3–5 HP Client Manager 3–4 HP Client Premium Suite 3–5 HP Insight Diagnostics 2–14 2–18...
  • Page 230 Index power supply removal and replacement 6–32 power switch assembly removal and replacement 6–26 preparation for disassembly 6–1 processor removal and replacement 6–29 speaker removal and replacement 6–31 system board removal and replacement 6–34 national keyboard delimiter characters 3–22 notification of hardware and software changes (PCN) 3–8 operating guidelines 5–5 optical drive...
  • Page 231 4–2 screws, correct size 5–8 SDRAM (synchronous dynamic random access memory) F–1 security DriveLock 3–22 fingerprint identification technology 3–26 HP ProtectTools Security Manager 3–5 MT external 6–2 password 3–19 SFF 7–6 security features overview 3–17 serial interface pin assignments A–3 service considerations 5–7...
  • Page 232 Boot Block Emergency Recovery Mode 3–10 Computer Setup Utilities 2–1 Drive Protection System 3–26 Fault Notification and Recovery 3–26 HP Backup and Recovery Manager 1–2 HP Client Foundation Suite 3–5 HP Client Manger 3–4 HP Client Premium Suite 3–5 HP Insight Diagnostics 2–14 Index–6...
  • Page 233 HP Client Foundation Suite 3–6 HP Client Management Premium Suite 3–5 HP Client Manager 3–5 HP OpenView Client Configuration Manager 3–6 HP OpenView Management Suite 3–6 HP ProtectTools Security Manager 3–5 HPQFlash 3–10 Proactive Change Notification (PCN) 3–8 Remote ROM BIOS Flash 3–9 Service Reference Guide, dx7300 replicating setup 3–12...
  • Page 234 Index Index–8 43361 1-001 Service Reference Guide, dx7300...

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Compaq dx7300 stDx7300 - microtower pcCompaq dx7300

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