HP dx2700 - Microtower PC Service & Reference Manual
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HP dx2700 - Microtower PC Service & Reference Manual

HP dx2700 - Microtower PC Service & Reference Manual

Service reference guide: hp compaq dx2700 mt/dx2708 mt/dx2700 sff business pcs
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service reference guide
HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF
Business PCs
1st Edition
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, SATA drives, safety, routine care, connector pin assignments, POST
error messages, and diagnostic indicator lights.
Document Part Number 431672-001

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Summary of Contents for HP dx2700 - Microtower PC

  • Page 1 HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs 1st Edition This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, SATA drives, safety, routine care, connector pin assignments, POST error messages, and diagnostic indicator lights.
  • Page 2 Service Reference Guide HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs 1st Edition Document Part Number: 431672-001 September 2006...
  • Page 3 CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to Ä equipment or loss of information. Service Reference Guide HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs First Edition (September 2006) Document Part Number: 431672-001...

  • Page 4: Table Of Contents

    Contents 1 Installing the Operating System 1.1 Microsoft Windows XP/Redflag Linux ......... . 1–1 1.1.1 Installing or Upgrading Device Drivers (Only applicable for Windows OS) .
  • Page 5 Contents 5 Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1 Chassis Designations ............5–1 5.1.1 Microtower (MT)/Small Form Factor (SFF) .
  • Page 6 Contents 6.9 Front I/O Panel Housing Assembly - MT chassis ....... . 6–26 6.10 System Fan .

  • Page 7: Installing The Operating System

    To install optional hardware devices after the OS installation is completed, you must install the device drivers for the device you are installing. The I386 directory and its subdirectories provide the HP- or Compaq-specific integration of the operating system for the computer model and include device drivers supported by the operating system.

  • Page 8: Converting To Ntfs (Associated With Winxp Os)

    English and selected other languages, in one of these ways: www.hp.com ■ HP web site at ■ Restore Plus! CD, which is supplied with many Compaq models ✎ Additional HP software may be required in certain situations. 1–2 431672-001...

  • Page 9: Setup Utilities And Diagnostics Features

    Setup Utilities and Diagnostics Features Setup Utilities (F10) and diagnostic features provide information needed about the computer system when contacting Customer Support. These tools can also be used to: ■ Change factory default settings and to set or change the system configuration, which may be necessary when you add or remove hardware.

  • Page 10: Computer Setup Utilities

    Setup Utilities and Diagnostics Features 2.2 Computer Setup Utilities Use Computer Setup Utilities (F10) to: ■ Modify or restore 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 11 Setup Utilities and Diagnostics Features 3. A choice of headings appears in the Computer Setup Utilities menu: System Information, Standard CMOS Features, Advanced BIOS Features, Advanced Chipset Features, Integrated Peripherals, Power Management Setup, PnP/PCI Configurations, PC Health Status, Load Optimized Defaults, Set Supervisor Password, Set User Password, Save and Exit Setup, and Exit Without Saving.

  • Page 12: Computer Setup Menu

    Setup Utilities and Diagnostics Features 2.2.2 Computer Setup Menu Computer Setup Heading Option Description System System S/N (view only) Information Product Name (view only) OwnerShip TAG Enter ownership tag assigned by the owner. [Press Enter] OwnerShip TAG (view only) BIOS Version (view only) BIOS Release Date (view only)
  • Page 13 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description Standard SATA Port 0 For each, allows you to: CMOS SATA Port 1 • detect HDD size and head on selected Features channel SATA Port 2 (continued) • set extended drive on selected channel to: SATA Port 3 •...
  • Page 14 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description Advanced Hard Disk Boot Priority Allows you to specify the order of attached BIOS Features hard drive devices (such as USB HDD storage, USB2 Drive Key, or USB flash (continued) media).
  • Page 15 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description Advanced PEG/Onchip VGA Control Allows you to set system display at: Chipset (VGA Setting) • Onchip VGA Features • PEG Port • Auto On-Chip Frame Buffer Size Allow you to set On-Chip Frame Buffer Size (VGA Setting •...
  • Page 16 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description Integrated USB Controller Disables/enables USB controller. Peripherals USB Legacy Support Disables/enables USB legacy support. HD Audio Allows you to auto-detect or disable onboard audio. Onboard LAN Disables/enables onboard LAN controller. Onboard LAN Boot ROM Disables/enables the boot ROM of the onboard LAN chip.
  • Page 17 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description Power ACPI Function Enables/disables ACPI functions. Changing Management this item can make the existing OS unusable. Setup ACPI Suspend Type Allows you to set type of ACPI suspend to: •...
  • Page 18 Setup Utilities and Diagnostics Features Computer Setup (Continued) Heading Option Description PnP/PCI IRQ Resources When resources are controlled manually, Configurations allows you to assign each system interrupt a • IRQ-3 assigned to type, depending on the type of device using (continued) •...

  • Page 19: Recovering The Configuration Settings

    Setup Utilities and Diagnostics Features 2.3 Recovering the Configuration Settings Recovering the configuration settings established in the Computer Setup (F10) Utility requires that you first back up the settings before a recovery is needed. http://www.hp.com The CMOS Save/Load utility firmware can be found at under the Software &...

  • Page 20: Desktop Management

    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. A customized software image may be deployed by: ■...

  • Page 21: Dual-State Power Button

    Desktop Management 1. Remove all removable media and turn off the power. 2. Insert a diskette, CD, or USB flash device containing the desired BIOS image file in the root directory. The media must be formatted using the FAT12, FAT16, or FAT32 file system. 3.

  • Page 22: World Wide Web Site

    Desktop Management 3.2.4 World Wide Web Site When making the transition to new or revised operating systems, it is important to implement the support software designed for that operating system. If you plan to run a version of Microsoft Windows that is different from the version included with your computer, you must install corresponding device drivers and utilities to ensure that all features are supported and functioning properly.

  • Page 23: Entering A User Password

    Desktop Management 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. 2. As soon as the computer is turned on, press and hold the key until you enter Computer Enter Setup.
  • Page 24 Desktop Management To change the supervisor password, as soon as the computer is turned on, press and hold the key until you enter Computer Setup. Press Enter to bypass the title screen, if necessary. ✎ If you do not press the key at the appropriate time, you must turn the computer off, then on again, and press the key again to access the utility.

  • Page 25: Surge-Tolerant Power Supply

    Desktop Management National Keyboard Delimiter Characters Each keyboard is designed to meet country-specific requirements. The syntax and keys that you use for changing or deleting your password depend on the keyboard that came with your computer. National Keyboard Delimiter Characters Arabic Greek Russian...

  • Page 26: Serial Ata Drive Guidelines And Features

    Serial ATA Drive Guidelines and Features ✎ Serial ATA = SATA HP does not support the use of a PATA (IDE) hard drive / optical drive on these models of computer. SATA 1.5 and 3.0 Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length...

  • Page 27: Sata Hard Drive Cables

    Serial ATA Drive Guidelines and Features 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. SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and never bend it tighter than a 30 mm (1.18 in) radius.

  • Page 28: Sata Smart Drives

    Serial ATA Drive Guidelines and Features 4.3 SATA 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 29: Legacy Mode

    Serial ATA Drive Guidelines and Features 4.5.1 Legacy Mode The Legacy mode is used to access devices attached to an embedded SATA controller. Each channel of the controller requires two fixed I/O address ranges and an IRQ. ■ Primary Channel ❏...

  • Page 30: Identifying The Chassis, Routine Care, And Disassembly Preparation

    Identifying the Chassis, Routine Care, and Disassembly Preparation 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 31 Identifying the Chassis, Routine Care, and Disassembly Preparation dx2708 MT dx2700SFF Note: dx2708 MT is only for China Market. 5–2 431672-001 Service Reference Guide...

  • Page 32: Electrostatic Discharge Information

    Identifying the Chassis, Routine Care, and Disassembly Preparation 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 33: 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 34: Routine Care

    Identifying the Chassis, Routine Care, and Disassembly Preparation ■ Static awareness labels ■ Wrist straps and footwear straps providing one-megohm +/- 10% resistance ■ Material handling packages ■ Conductive plastic bags ■ Conductive plastic tubes ■ Conductive tote boxes ■ Opaque shielding bags ■...

  • Page 35: Cleaning The Keyboard

    Identifying the Chassis, Routine Care, and Disassembly Preparation 5.3.3 Cleaning the Keyboard Follow all safety precautions in Section 5.3.1, “General Cleaning Safety Precautions,” before cleaning the keyboard. To clean the tops of the keys or the keyboard body, follow the procedures described in Section 5.3.2, “Cleaning the Computer Case.”...

  • Page 36: Service Considerations

    ■ Diagnostics software ■ Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002) 5.4.2 Screws The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of different lengths.

  • Page 37: Cables And Connectors

    Identifying the Chassis, Routine Care, and Disassembly Preparation 5.4.3 Cables and Connectors Most cables used throughout the unit are flat, flexible cables. These cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector.

  • Page 38: Preparation For Disassembly

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly. ✎...

  • Page 39: Remove The Computer Access Panel And Front Bezel (Mt Chassis And Sff Chassis)

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.2 Remove the computer access panel and front bezel MT chassis and SFF chassis 6.2.1 Access Panel (MT Chassis) 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that Ä...

  • Page 40: Front Bezel (Mt Chassis)

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.2.2 Front Bezel (MT Chassis) 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel (Section 6.2.1, “Access Panel (MT Chassis)”). 3. Press down on all four tabs on the bottom of bezel then rotate the bezel off the chassis. * These apply for selected models and countries only.

  • Page 41: Removing The Computer Access Panel And Front Bezel (Sff Chassis)

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.2.3 Removing the Computer Access Panel and Front Bezel (SFF chassis) To remove the computer access panel: 1. Turn off the computer properly through the operating system, then turn off any external devices.
  • Page 42 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 4. To remove the front bezel, gently pull up all three tabs 1 on the top of the bezel, then pull the bezel 2 away from the chassis. Removing the Front Bezel To reassemble the computer, reverse the above procedure.

  • Page 43: Using The Small Form Factor Computer In A Minitower Configuration

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.3 Using the Small Form Factor Computer in a Minitower Configuration The Small Form Factor computer can be used in either a minitower or desktop configuration. To use it in the minitower configuration, you must purchase a tower stand from HP (part number 316593-001).

  • Page 44: Front Drive Bezels

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.4 Front Drive Bezels 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel and the front bezel - MT (Section 6.2.1, “Access Panel (MT Chassis)”...

  • Page 45: Memory

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.5 Memory For more information on the memory in this series of computers, refer to Appendix E, “Memory.” 6.5.1 Installing Memory Modules/MT chassis CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is Ä...

  • Page 46: Installing Ddr2-Sdram Dimms - Sff Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis ✎ A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket. 5. Push the module down into the socket, ensuring that the module is fully inserted and properly seated.
  • Page 47 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 5. Locate the memory module sockets. Å WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. 6. Open both latches of the memory module socket 1, then insert the memory module into the socket 2.

  • Page 48: Expansion Cards

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.6 Expansion Cards 6.6.1 Expansion Slot Cover Lock 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the right access panel (Section 6.2, “Remove the computer access panel and front bezel (MT chassis and SFF chassis)”).
  • Page 49 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis To install an expansion card in an empty slot continue with step 9. 9. With the card aligned so the mounting bracket will fit firmly against the computer backwall 1, slide the expansion card into the expansion socket and press it firmly into place 2.

  • Page 50: Installing An Expansion Card

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.6.3 Installing an Expansion Card The computer has four PCI expansion slots. Each slot can accommodate a half-height PCI or PCI Express expansion card up to 6.6 inches (16.764 cm) in length. ✎...
  • Page 51 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 7. Install the expansion card by carefully placing the expansion card under the slot cover retention latch 1, then firmly pushing the expansion card into the connector 2. Ensure that the expansion card is firmly and properly seated in the expansion card slot.

  • Page 52: Removing An Expansion Card

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.6.4 Removing an Expansion Card To remove an expansion card: 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power outlet and disconnect any external devices. 3.

  • Page 53: Cable Management

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.7 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 54: 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 Compaq factory-installed files. 6.8.1 Locating Drive Positions * These apply for selected models and countries only.

  • Page 55: Removing A Drive

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis Drive Positions Item Description First 5.25-inch, half-height bays for optional drives Second 5.25-inch, half-height bays for optional drives One standard 3.5-inch, one-third height bays (1.44-MB diskette drive shown) One internal 3.5-inch, one-third height bays for hard drives An internal 3.5-inch bracket kit for second hard drives is available as option.

  • Page 56: Locating Drive Positions - Sff Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 5. Hard disk is inserted or slide out from the back. * These apply for selected models and countries only. Removing the Hard disk 6. Remove one guide screws (Floppy Drive only) from the old drive. You will need these screws to install a new drive.

  • Page 57: Removing An Optical Drive Or Diskette Drive - Sff Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 1 3.5-inch drive bay (1.44-MB diskette drive shown)* 2 5.25-inch drive bay for optional drives 3 3.5-inch, internal, standard hard drive bay *If the computer has a 1.44-MB diskette drive installed, it will be configured with a diskette drive bezel as shown in the illustration.

  • Page 58: Installing An Optional Optical Drive - Sff Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 7. Remove the screws 1 that secure Floppy drive and Optical drive. Removing the Optical Drive or Diskette Drive To replace the drive, reverse the removal procedures. ✎ When replacing the drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails.
  • Page 59 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis Installing Guide Screws in the Optical Drive 3. Position the guide screws on the drive into the J-slots in the drive bay 1. Then, slide the drive toward the rear of the computer 2. Installing the Optical Drive ✎...
  • Page 60 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 4. Raise the Easy Access drive bay to the upright position and connect the flat ribbon cable and audio cable to the system board. Connecting the Flat Ribbon Cable and Audio Cable 5.

  • Page 61: Upgrading The Hard Drive - Sff Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.8.6 Upgrading the Hard Drive - SFF chassis Removing and Replacing the Hard Drive ✎ Only a serial advanced technology attachment (SATA) hard drive can be installed on this computer. ✎...
  • Page 62 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6. Remove the screw 1. 7. Slide the drive to the right of the bay 2. Removing the Hard Drive 8. To install a hard drive, reverse the above procedure. 9.

  • Page 63: Front I/O Panel Housing Assembly - Mt Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.9 Front I/O Panel Housing Assembly - MT chassis 1. Prepare the computer for disassembly (Section 6.1, “Preparation 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 (Section 6.1, “Preparation for Disassembly”).

  • Page 64: System Fan

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.10 System Fan 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel (Section 6.2, “Remove the computer access panel and front bezel (MT chassis and SFF chassis)”).

  • Page 65: Heatsink - Mt Chassis

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.11 Heatsink - MT chassis 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel (Section 6.2, “Remove the computer access panel and front bezel (MT chassis and SFF chassis)”).

  • Page 66: Processor

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.12 Processor 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel cover (Section 6.2, “Remove the computer access panel and front bezel (MT chassis and SFF chassis)”).
  • Page 67 Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 5. Go to step 7. 6. If using a new heatsink, remove the protective covering from the bottom of the heatsink and place it in position atop the processor. 7. Secure the heatsink to the system board and system board tray with the 4 captive screws and attach the heatsink control cable to the system board.

  • Page 68: System Board

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.13 System Board 1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”). 2. Remove the access panel (Section 6.2, “Remove the computer access panel and front bezel (MT chassis and SFF chassis)”). 3.

  • Page 69: 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/Compaq, their authorized partners, or their agents. Ä...

  • Page 70: Battery Holder

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.14.1 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.

  • Page 71: Power Supply

    Removal and Replacement Procedures— Microtower (MT)/Small Form Factor (SFF) Chassis 6.15 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 72: Enhanced Keyboard

    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. Enhanced Keyboard Connector and Icon Signal Data Unused Ground +5 VDC Clock Unused Mouse Connector and Icon...

  • Page 73: Parallel Interface

    Connector Pin Assignments Parallel Interface Connector and Icon Signal Signal Signal Strobe Data Bit 5 Select Data Bit 0 Data Bit 6 Auto Linefeed Data Bit 1 Data Bit 7 Error Data Bit 2 Acknowledge Initialize Printer Data Bit 3 Busy Select IN Data Bit 4...
  • Page 74 Connector Pin Assignments Headphone Connector and Icon (1/8" miniphone) Signal 1 (Tip) Audio_Left 1 2 3 2 (Ring) Audio_Right 3 (Shield) Ground Line-In Audio Connector and Icon (1/8" miniphone) Signal 1 (Tip) Audio_In_Left 1 2 3 2 (Ring) Audio_In_Right 3 (Shield) Ground Line-Out Audio Connector and Icon (1/8"...

  • Page 75: Pin Power

    Connector Pin Assignments 24-Pin Power Connector Signal Signal Signal Signal +3.3 V -12 V +5 V +3.3 V +5 VSB +5 V +12 V PSON +5 V +5 V +12 V +3.3 V +5 V +3.3 V 13-1 +3.3 VS 4-Pin Power (for CPU) Connector and Icon Signal...

  • Page 76: General Requirements

    Power Cord Set Requirements The voltage select switch feature on the computer permits it to operate from any line voltage between 100-127 or 220-240 volts AC (230V-China only). (a) When dx2700 MT/dx2708 MT/ dx2700 SFF are assembled and shipped only for China, or Korea, or Australia/New Zealand Market, there aren't power switch selector with installed power supply.

  • Page 77: 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. Recommended Actions are to be taken in incremental steps.
  • Page 78 POST Error Messages POST Error Messages Screen Message Probable Cause Recommended Action Primary Master/Slave Primary Master/Slave Reseat the device data and power Hard Disk Error hard drive could not be cables. initialized by the BIOS. Replace the device data cable. Replace the device.
  • Page 79 POST Error Messages POST Error Messages Screen Message Probable Cause Recommended Action Microcode Error BIOS could not find or Ensure the system board BIOS supports load the CPU microcode the processor. update to the CPU. Change system board jumper on JP2 to pins 2-3 (Unlock), then flash the system BIOS.
  • Page 80 POST Error Messages POST Error Messages Screen Message Probable Cause Recommended Action CMOS Checksum Bad CMOS contents failed the Restart the computer, use the F10 Key to Checksum check. access Computer Setup. Select Load Default Settings > Save and Exit. Keyboard Error Keyboard not present or Reconnect keyboard with computer...

  • Page 81: 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 82: Solving General Problems

    Troubleshooting Without Diagnostics Solving General Problems You may be able to easily resolve the minor problems described in this section. If a problem persists and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact your HP authorized reseller or service provider. Problem Cause Solution...
  • Page 83 Troubleshooting Without Diagnostics Problem Cause Solution Computer date and time RTC (real-time clock) First, reset the Date and Time display is incorrect. battery may need to be Properties in the Control Panel replaced. (Computer Setup can also be used to update the RTC date and time).
  • Page 84 Troubleshooting Without Diagnostics Problem Cause Solution Some software 1. Lower the display resolution for applications, especially the current application or consult games, are stressful on the the documentation that came with graphics subsystem. the application for suggestions on how to improve performance by adjusting parameters in the application.

  • Page 85: 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 drive or expansion card. If you install a plug and play device, Windows XP Home/ Professional will automatically recognize the device and configure the computer. If you install a non–plug and play device, you must reconfigure the computer after completing installation of the new hardware.

  • Page 86: Interpreting Diagnostic Lights And Audible Codes

    Troubleshooting Without Diagnostics Interpreting Diagnostic Lights 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. ✎...

  • Page 87: Solving Display Problems

    Troubleshooting Without Diagnostics Solving Display Problems Solving Display Problems Problem Cause Solution Blank screen (no video). The cable connections Check the cable connections from are not correct. the monitor to the computer and to the electrical outlet. Screen blanking utility Press any key or click the mouse installed or energy button and, if set, type your...
  • Page 88 Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Solution Power LED flashes Red six Pre-video graphics For systems with a graphics card: times, once every second, error. 1. Reseat the graphics card. followed by a two second 2. Replace the graphics card. pause, and the computer beeps six times.
  • Page 89 Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Solution High pitched noise coming Brightness and/or Lower brightness and/or contrast from inside a flat panel contrast settings are too settings. monitor. high. Fuzzy focus; streaking, Flat panel monitor’s 1. Select the monitor’s Auto- ghosting, or shadowing internal digital Adjustment option in the...

  • Page 90: Solving Audio Problems

    Troubleshooting Without Diagnostics Solving Audio Problems Solving Audio Problems Problem Cause Solution Sound does not come Software volume control Double-click the Speaker icon on out of the speaker or is turned down. the taskbar and use the volume headphones. slider to adjust the volume. The external speakers Turn on the external speakers.
  • Page 91 Troubleshooting Without Diagnostics Solving Audio Problems (Continued) Problem Cause Solution Noise or no sound comes 1. If using digital speakers that out of the speakers or have a stereo jack and want the headphones. system to auto-switch to digital, use a stereo-to-mono adapter to properly engage the auto- sense feature or use the multimedia device properties...

  • Page 92: Solving Printer Problems

    Troubleshooting Without Diagnostics Solving Printer Problems Solving Printer Problems Problem Cause Solution Printer will not print. Printer is not turned on Turn the printer on and make sure it and online. is online. The correct printer 1. Install the correct printer driver driver for the for the application.

  • Page 93: Solving Keyboard And Mouse Problems

    Troubleshooting Without Diagnostics Solving Keyboard and Mouse Problems Solving Keyboard Problems Problem Cause Solution Keyboard commands and Keyboard connector 1. Turn off the computer. typing are not recognized is not properly 2. Reconnect the keyboard to the by the computer. connected.

  • Page 94: 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 Cause Solution Wake-on-LAN feature is Wake-on-LAN is not Use the Network control application not functioning. enabled. to enable Wake-on-LAN. Network driver does Network controller is Run Computer Setup and enable...
  • Page 95 Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Cause Solution Select the Network icon in the Diagnostics passes, but The network controller the computer does not is not configured for this Control Panel and configure the communicate with the computer. network controller.

  • Page 96: Solving Memory Problems

    Troubleshooting Without Diagnostics Solving Memory Problems Ä CAUTION: 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. Solving Memory Problems Problem Cause Solution System will not boot or Memory module is not Replace module with the correct does not function properly...

  • Page 97: Solving Processor Problems

    Troubleshooting Without Diagnostics Solving Processor Problems Solving Processor Problems Problem Cause Solution Poor performance is Processor is hot. 1. Make sure the airflow to the experienced. computer is not blocked. 2. Make sure the fans are connected and working properly (some fans only operate when needed).
  • Page 98 Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems Problem Cause Solution System will not boot from The CD-ROM or DVD Run the Computer Setup utility and CD-ROM or DVD drive. boot is not enabled enable booting to removable media through the Computer and verify boot order settings.

  • Page 99: Solving Drive Key Problems

    Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems (Continued) Problem Cause Solution Recording audio CDs is Wrong or poor quality 1. Try using a slower recording difficult or impossible. media type. speed. 2. Verify that you are using the correct media for the drive. 3.
  • Page 100 Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Cause Solution Unable to connect to the Cable/DSL service is Try connecting to the Internet at a Internet. (continued) not available or has later time or contact your ISP. (If the been interrupted due to cable/DSL service is connected, the bad weather.
  • Page 101 Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Cause Solution Internet takes too long to Modem is not set up Verify that the correct modem speed download Web sites. properly. and COM port are selected. For Windows XP 1. Select Start > Control Panel.

  • Page 102: Diagnostic Front Panel Leds And Audible Codes

    Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED None Computer on. None Green Power LED None Computer in Not support wake up by flashes every two Suspend to RAM mouse/keyboard.
  • Page 103 Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED Invalid ROM 1. Reflash the system ROM with the flashes 8 times, one based on bad latest BIOS image. every second, checksum.
  • Page 104 Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action System does not None System unable to Press and hold the power button for power on and LEDs power on. less than 4 seconds. If the hard drive are not flashing.

  • Page 105: Restoring The Software

    Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action System gives an Continu- The chassis side 1. Make sure that the Chassis side error message cover is open or cover is closed if not fix it as stating that “Error beep for would have been...

  • Page 106: Contacting Customer Support

    Troubleshooting Without Diagnostics Contacting Customer Support For help and service, contact an authorized reseller or dealer. To locate a reseller or dealer near www.hp.com you, visit ✎ If you take the computer to an authorized reseller, dealer, or service provider for service, remember to provide the setup and power-on passwords if they are set.
  • Page 107 Memory Computers equipped with Intel-based processors come with double data rate synchronous dynamic random access memory (DDR2) dual inline memory modules (DIMMs). The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These memory module slots are populated with at least one preinstalled memory module.

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