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HP Compaq Businessdc7600 Service & Reference Manual

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service reference guide
HP Compaq Business PC dc7600 Series
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 390742-001

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Summary of Contents for HP Compaq Businessdc7600

  • Page 1 HP Compaq Business PC dc7600 Series 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 Business PC dc7600 Series 1st Edition Document Part Number: 390742-001 May 2005...
  • 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

    3.3.3 HP Client Management Solutions using Altiris ....... . . 3–4...

  • Page 6: Serial And Parallel Ata Drive Guidelines And Features

    3.5.6 Cable Lock Provision ........... . 3–24 3.5.7 TPM Embedded Security Chip and HP ProtectTools Security Manager... . . 3–24 3.6 Fault Notification and Recovery .
  • Page 7 Contents 5.3 Operating Guidelines............5–5 5.4 Routine Care .
  • Page 8 Contents 6.22Power Supply ............. . 6–38 6.23Changing from Desktop to Minitower .

  • Page 9: Connector Pin Assignments

    Contents 8.4 MultiBay Device ............. 8–5 8.5 MultiBay Riser Card .
  • Page 10 Contents viii 390742-001 Service Reference Guide, dc7600...

  • Page 11: 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 . Click Driver Downloads, select Download drivers and software, enter the Enter model number of the computer, and press You can also obtain the latest support software on CDs.

  • Page 12: Transferring Files And Settings

    HP Software The Microsoft Windows XP Professional operating system is preinstalled on the computer and will be configured automatically the first time the computer is turned on. The following HP software may also be installed at that time on selected models: ■...
  • Page 13 English and selected other languages, in one of three ways: ■ Support Software CD ■ www.hp.com HP Web site at ■ Restore Plus! CD, which is supplied with many HP models ✎ Additional HP software may be required in certain situations. Service Reference Guide, dc7600 390742-001 1–3...
  • Page 14 Installing the Operating System 1–4 390742-001 Service Reference Guide, dc7600...

  • Page 15: 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 16: 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 17: Using Computer Setup (F10) Utilities

    Setup Utilities and Diagnostics Features 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 18: Computer Setup Menu

    Setup Utilities and Diagnostics Features 2.2.2 Computer Setup Menu Heading Option Description File System Information Lists: • Product name • SKU number (some models) • Processor type/speed/stepping • Cache size (L1/L2) (dual core processors have this listed twice) • Total installed memory size, speed, and operating mode (Single Channel, Dual Channel, or Asymmetric) (if applicable) •...
  • Page 19 Setup Utilities and Diagnostics Features Heading Option Description Storage Device Lists all installed BIOS-controlled storage devices. Configuration When a device is selected, detailed information and options are displayed. The following options may be presented. Diskette Type Identifies the highest capacity media type accepted by the diskette drive.
  • Page 20 Setup Utilities and Diagnostics Features Heading Option Description Storage Device Default Values IDE/SATA (continued) Configuration If selected, this option allows you to specify the default values for the (continued) Multisector Transfers, Transfer Mode, and Translation Mode for ATA devices. Multisector Transfers (ATA disks only) Specifies how many sectors are transferred per multi-sector PIO operation.
  • Page 21 Setup Utilities and Diagnostics Features Heading Option Description Storage Storage Options BIOS DMA Data Transfers (continued) (continued) Allows you to control how BIOS device I/O requests are serviced. When “Enable” is selected, the BIOS will service ATA device read and write requests with DMA data transfers. When “Disable” is selected, the BIOS will service ATA device read and write requests with PIO data transfers.
  • Page 22 Setup Utilities and Diagnostics Features Heading Option Description Storage Boot Order Allows you to: (continued) • Specify the order in which attached devices (such as a USB flash media device, diskette drive, hard drive, optical drive, or network interface card) are checked for a bootable operating system image.
  • Page 23 Setup Utilities and Diagnostics Features Heading Option Description Security Embedded Allows you to: (continued) Security • Enable/disable the Embedded Security device. • Reset the device to Factory Settings. • Enable/disable power-on authentication support. • Reset authentication credentials. This feature is supported on some models only. Device Security Enables/disables serial ports, parallel port, front USB ports, system audio, internal speaker (does not affect external speakers) network...
  • Page 24 Setup Utilities and Diagnostics Features Heading Option Description Security Data Execution Enable/Disable. Prevention Data Execution Prevention Mode help prevent OS security breaches. (continued) ✎ This selection is in effect only if the processor and operating system being used comprehend and utilize the function. Power OS Power •...
  • Page 25 Setup Utilities and Diagnostics Features Heading Option Description Advanced* Power-On Options Allows you to set: *For • POST mode (QuickBoot, FullBoot, or FullBoot every 1-30 days). advanced • POST messages (enable/disable). users only • F9 prompt (enable/disable). Enabling this feature will display the text F9=Boot Menu during POST.
  • Page 26 Setup Utilities and Diagnostics Features Heading Option Description Advanced* Power-On Options Allows you to set: (continued) (continued) (continued) • Hyper-threading (enable/disable) *For • Set Up Browse Mode (enable/disable). Enabling this feature advanced permits Computer Setup to be viewed, but not changed, without users only entering the setup password.
  • Page 27 Setup Utilities and Diagnostics Features Heading Option Description Advanced* Device options Allows you to set: (continued) • Printer mode (bi-directional, EPP & ECP, output only). *For • Num Lock state at power-on (off/on). advanced • S5 Wake on LAN (enable/disable). users only •...

  • Page 28: 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 29: Survey Tab

    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 30: Test Tab

    Setup Utilities and Diagnostics Features 2.3.3 Test Tab The Test tab allows you to choose various parts of the system to test. You can also choose the type of test and testing mode. There are two test modes to choose from: ■...

  • Page 31: Status Tab

    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 32: Downloading The Latest Version Of Hp Insight Diagnostics

    5. Print the information from the storage device used to save it. ✎ To exit HP Insight Diagnostics, click Exit in the upper right corner of the screen then remove the Documentation and Diagnostics CD from the optical drive. 2.3.7 Downloading the Latest Version of HP Insight Diagnostics www.hp.com...

  • Page 33: 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 34: Altiris Deployment Solution Agent

    F12 = Network Service Boot message appears in the lower-right corner of the HP logo screen. Follow the instructions on the screen to continue the process. The default boot order is a BIOS configuration setting that can be changed to always attempt to PXE boot.

  • Page 35: Software Updating And Management

    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 36: Hp Client Management Solutions Using Altiris

    For more information on HP Client Management Solutions using Altiris, visit www.hp.com/go/easydeploy HP and Altiris have a unique alliance that extends beyond sales and marketing to include joint development and technology sharing that spans HP Client, Server, OpenView, and Services groups to provide best-of-breed solutions for HP partners and customers.

  • Page 37: Hp Local Recovery

    System backup and disaster recovery is now easy for all users regardless of connectivity. Local Recovery is available for free with HP business PCs. Two additional client recovery products are also available. Upgrading to these products provides you with additional recovery features: ■...

  • Page 38: Proactive Change Notification

    HP Client Management Solutions, HP Systems Insight Manager, and Microsoft's implementation of CIM, known as Windows Management Instrumentation (WMI), the HP Insight Management Agent is no longer being provided on new HP commercial desktop, workstation, and notebook models introduced after January 1, 2004.

  • Page 39: Rom Flash

    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 40: 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 41: Copying To Multiple Computers

    Desktop Management 6. Select File > Replicated Setup > Save to Removable Media. Follow the instructions on the screen to create the configuration diskette or USB flash media device. 7. Turn off the computer to be configured and insert the configuration diskette or USB flash media device.

  • Page 42: 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 43: Unsupported Usb Flash Media Device

    Desktop Management 7. If your bootable DOS diskette contains SYS.COM, go to step 8. Otherwise, go to step 9. SYS x: 8. At the A:\ prompt, enter where x represents the drive letter noted above. Ä CAUTION: Be sure that you have entered the correct drive letter for the USB flash media device. After the system files have been transferred, SYS will return to the A:\ prompt.
  • Page 44 Desktop Management 3. Insert the USB flash media device into one of the computer's USB ports and remove all other USB storage devices except USB diskette drives. Close the computer cover. 4. Plug in the power cord and turn on the computer. 5.

  • Page 45: Dual-State Power Button

    Windows that is different from the version included with the computer, you must install corresponding device drivers and utilities to ensure that all features are supported and functioning properly. HP has made the task of locating, accessing, evaluating, and installing the latest support software http://www.hp.com/support easier. You can download the software from .

  • Page 46: Asset Tracking And Security

    HP ProtectTools Security Manager Guide at .) Security features such as HP Embedded Security for ProtectTools, the Smart Cover Sensor and the Smart Cover Lock, available on some models, help to prevent unauthorized access to the internal components of the personal computer.
  • Page 47 Desktop Management Computer Setup Utilities (F10) Security Features (Continued) Feature Description Password Options Allows you to: (This selection will appear only • Lock legacy resources (appears if a setup password is set). if a power-on password is set.) • Enable/disable network server mode. •...
  • Page 48 Desktop Management Computer Setup Utilities (F10) Security Features (Continued) Feature Description DriveLock (some models) Allows you to assign or modify a master or user password for certain ATA hard drives. When this feature is enabled, the user is prompted to provide one of the DriveLock passwords during POST.

  • Page 49: 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 www.hp.com Security Manager Guide at .

  • Page 50: Entering A Setup Password

    Entering a Setup Password If the system is equipped with an embedded security device, refer to the HP ProtectTools www.hp.com 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 51: 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 www.hp.com Security Manager Guide at 1.

  • Page 52: 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 53: 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 54: 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 55: Locking The Smart Cover Lock

    ■ Forgotten password Ä CAUTION: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order this key before you need one (Tamper-resistant wrench PN 166527-001 or tamper-resistant bits PN 166527-002). For more information about using the Smart Cover FailSafe Key, consult the Hardware Reference Guide.

  • Page 56: Cable Lock Provision

    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 57: Sata 1.5 And 3.0 Hard Drives

    ✎ Serial ATA = SATA Parallel ATA = PATA HP only supports the use of a MultiBay PATA (IDE) hard drive on this model of computer. 3.5-inch PATA hard drives are not supported. SATA 1.5 and 3.0 Hard Drives Serial ATA Hard Drive Characteristics...

  • Page 58: 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 59: Pata Device Information

    Serial and Parallel ATA Drive Guidelines and Features 4.3 PATA Device Information This information applies to optical drives in a computer having one or two SATA drive controllers and a single PATA drive controller. Only a MultiBay PATA hard drive is supported on these computers. No other PATA hard drives are supported on these models.

  • Page 60: Pata Power Cable

    Serial and Parallel ATA Drive Guidelines and Features 4.4.2 PATA Power Cable Usage +12 V Ground Ground +5 V 4.5 PATA Drive Installation Guidelines The computer system boards for these products have one Parallel ATA (PATA) channel with a single connector. The channel can have up to two devices attached to it. All drives are connected to the channel using an industry-standard 80-conductor cable.

  • Page 61: Ata Smart Drives

    Serial and Parallel ATA Drive Guidelines and Features 4.6 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 62: Legacy Mode

    Serial and Parallel ATA Drive Guidelines and Features 4.8.1 Legacy Mode The Legacy mode is used to access devices attached to an embedded ATA controller. Each channel of the controller requires two fixed I/O address ranges and an IRQ. ■ Primary Channel ❏...

  • Page 63: Mixed Devices Boot And Drive Letter Ordering

    Serial and Parallel ATA Drive Guidelines and Features 4.9 Mixed Devices Boot and Drive Letter Ordering HDD Boot and Drive SATA Emulation Hard Drive Order Letter Ordering Separate IDE Controller A. Integrated SATA A1. SATA 0 (default). Used with Windows B.
  • Page 64 Serial and Parallel ATA Drive Guidelines and Features 4–8 390742-001 Service Reference Guide, dc7600...

  • Page 65: 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. Ä CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system board.

  • Page 66: Small Form Factor (Sff)

    Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1.2 Small Form Factor (SFF) 5.1.3 Ultra-Slim Desktop 5–2 390742-001 Service Reference Guide, dc7600...

  • Page 67: 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.

  • Page 68: 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 69: Operating Guidelines

    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 70: 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 Section 5.4.1...

  • Page 71: Cleaning The Monitor

    Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver) ■ 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, dc7600 390742-001 5–7...

  • Page 72: 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 73: 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, dc7600 390742-001 5–9...
  • Page 74 Identifying the Chassis, Routine Care, and Disassembly Preparation 5–10 390742-001 Service Reference Guide, dc7600...

  • Page 75: Removal And Replacement Procedures - Convertible Minitower (Cmt) Chassis

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the diagnostics utility to verify that all components operate properly. ✎...

  • Page 76: Unlocking The Smart Cover Lock

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.2 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 77: Hood Sensor

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.3 Hood Sensor 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel (Section 6.5). 3. Disconnect the hood sensor cable from the system board. 4. Slide the hood sensor switch towards the front of the computer 1 and lower it down through the slot 2.

  • Page 78: External Security Devices

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.4 External Security Devices 6.4.1 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. 6.4.2 Padlock A padlock may be used by itself to secure the access panel to the computer chassis.

  • Page 79: Computer Access Panel

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.5 Computer Access Panel 1. Prepare the computer for disassembly (Section 6.1). 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 80: Front Bezel

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.6 Front Bezel 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Push up on the two release tabs 1, then rotate the front bezel away from the chassis to release it 2.

  • Page 81: Front Drive Bezels

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.7 Front Drive Bezels 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 6.7.1 5.25” Drive Bezel Blank Gently pull the subpanel, with the bezel blanks secured in it, away from the front bezel, then remove the desired bezel blank.

  • Page 82: Diskette Drive Bezel Or Bezel Blank

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.7.2 Diskette Drive Bezel or Bezel Blank Press up on the two small retaining clips 1 on the bottom of the bezel insert, press down on the two small retaining clips 2 on the top of the insert, and push the cover out of the front bezel 3. To install a bezel or a bezel blank, reverse the removal procedure.

  • Page 83: Cable Management

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.8 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 84: Memory

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.9 Memory 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.
  • Page 85 Removal and Replacement Procedures - Convertible Minitower (CMT) 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 86: Expansion Cards

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.10 Expansion Cards 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis.
  • Page 87 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6. If you are removing an expansion card from a standard expansion socket, hold the card at each end and carefully rock it back and forth until the connectors pull free from the socket. Lift the expansion card straight up to release it from the chassis frame.
  • Page 88 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 7. If you are removing a PCI Express card from a x16 PCI Express socket with a retention mechanism, pull the retention arm away from the socket then carefully rock the card back and forth until the connectors pull free from the socket.
  • Page 89 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 10. Slide the bracket on the end of the expansion card down into the slot on the back of the chassis and press the card down firmly into the socket on the system board. ✎...

  • Page 90: Pci Retainer Latch

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.11 PCI Retainer Latch 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis.
  • Page 91 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6. Slide the pivoting bar to the right 1, then lift the left end 2 to remove it from the chassis. To replace the bar, slide it into the socket on the right 1, lower it into position 3, and slide it to the left 4 to secure it in place.

  • Page 92: Expansion Card Guide

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.12 Expansion Card Guide 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove any expansion cards that might be in the way (Section 6.10). 4.

  • Page 93: Drives

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.13 Drives The computer supports up to six drives that may be installed in various configurations. This Section describes the procedure for replacing or upgrading the storage drives. A Torx T-15 screwdriver is needed to remove and install the guide screws on a drive.

  • Page 94: 2Hard Drive

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.13.2 Hard Drive Ä CAUTION: To prevent loss of work and damage to the computer or drive: ■ If you are inserting or removing a hard drive, shut down the operating system properly, then turn off the computer.
  • Page 95 ✎ Extra guide screws are provided on the chassis. Hard drives use 6-32 standard screws. Optical drives use M3 metric screws. The HP-supplied metric screws are black. The HP-supplied standard screws used on hard drives are silver. 7. Store the removed drive in anti-static packaging.

  • Page 96: 3Optical Drive

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.13.3 Optical Drive ✎ An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD-R/RW, or CD-RW/DVD Combo drive. 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5).
  • Page 97 ✎ Extra guide screws are provided on the chassis on the side of the fourth drive bay. Optical drives use M3 metric screws. The HP-supplied metric screws are black. The HP-supplied standard screws, used only for hard drives, are silver.
  • Page 98 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 9. After installing the M3 metric guide screws 1, install the drive by sliding it into the appropriate drive bay on the front of the chassis 2. The drivelock automatically secures the drive in the bay.

  • Page 99: 4Diskette Drive

    Extra guide screws are provided on the side of the drive bay under the access panel. The diskette drive uses M3 metric screws. The HP-supplied metric screws are black. The HP-supplied standard screws, used only for hard drives, are silver.

  • Page 100: Front I/O Device

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.14 Front I/O Device 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect the two I/O device cables from the system board: the front USB cable pair and the front audio cable.

  • Page 101: Power Switch Assembly

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.15 Power Switch Assembly 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect the power switch/LED cable from the system board. 5.

  • Page 102: System Board

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.16 System Board 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove all PCI expansion boards (Section 6.10). 4. Remove the x16 PCI Express graphics card (Section 6.10).

  • Page 103: 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 104: 1Type 1 Battery Holder

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.17.1 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

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.17.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp 1 that extends above one edge of the battery. When the battery pops up, lift it out. 2.

  • Page 106: 3Type 3 Battery Holder

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.17.3 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: Heatsink

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.18 Heatsink 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the heatsink control cable from the system board. 4. Uncrew the four captive screws 1 that secure the heatsink to the system board. Ä...

  • Page 108: Processor

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.19 Processor 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the heatsink control cable from the system board and remove the heatsink (Section 6.18).
  • Page 109 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:...

  • Page 110: Speaker

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.20 Speaker 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the speaker wire from the system board. 4. Remove the four screws from the inside of the chassis 1 that secure the speaker to the chassis.

  • Page 111: Chassis Fan

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.21 Chassis Fan 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the fan control cable from the system board. 4. Remove the four screws that secure the fan assembly to the chassis and then remove the fan assembly.

  • Page 112: Power Supply

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.22 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 113: Changing From Desktop To Minitower

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.23 Changing from Desktop to Minitower 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect all power and data cables from the back of the drives in the 5.25-inch drive bays. 5.
  • Page 114 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6. Before you reinstall each drive into the chassis, turn it so that it is in the same orientation as the internal 3.5-inch drive. The bottom of the drive should be parallel to the yellow drivelock. 7.
  • Page 115 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 11. Reposition the subpanel (rotate it 90°) with the logo at the bottom, then snap it back into the bezel. 12. Replace the front bezel and computer access panel. 13. Reconnect the external equipment. 14.

  • Page 116: Changing From Minitower To Desktop

    Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.24 Changing from Minitower to Desktop 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect all power and data cables from the back of the drives in the 5.25-inch drive bays. 5.
  • Page 117 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6. Before reinstalling each drive into the chassis, turn the drive so that it is perpendicular to the internal 3.5-inch drive. The drive should be parallel to the green latch drive bracket. 7.
  • Page 118 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 11. Reposition the subpanel (rotate it 90°) with the logo at the bottom, then snap it back into the bezel. 12. Replace the front bezel and computer access panel. 13. Reconnect the external equipment. 14.

  • Page 119: Removal And Replacement Procedures-Small Form Factor (Sff) Chassis

    Removal and Replacement Procedures— 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 120: Unlocking The Smart Cover Lock

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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 121 Removal and Replacement Procedures— Small Form Factor (SFF) 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 122: Hood Sensor

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis Hood Sensor 1. Prepare the computer for disassembly. 2. Remove the computer cover. 3. Remove the special security clip (Section 7.4.1) from the top rear corner of the power supply cage. 4.

  • Page 123: External Security Devices

    Removal and Replacement Procedures— Small Form Factor (SFF) 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 124: Padlock

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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. 7.4.4 Universal Chassis Clamp Lock Without Security Cable 1.
  • Page 125 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 2. Screw the lock to the chassis using the screw provided. 3. Insert the plug into the lock 1 and push the button in 2 to engage the lock. Use the key provided to disengage the lock.

  • Page 126: With Security Cable

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis With Security Cable 1. Fasten the cable by looping it around a stationary object. 2. Thread the keyboard and mouse cables through the lock. 7–8 390742-001 Service Reference Guide, dc7600...
  • Page 127 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 3. Screw the lock to the chassis using the screw provided. 4. Insert the plug end of the security cable into the lock 1 and push the button in 2 to engage the lock.

  • Page 128: Computer Cover

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis Computer Cover 1. Prepare the computer for disassembly (Section 7.1). 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 129: Front Drive Bezels

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis Front Drive Bezels 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 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 130 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis There are three drive bezel inserts that are available. Item Description Diskette drive bezel Hard drive bezel 3.5” drive bezel 7–12 390742-001 Service Reference Guide, dc7600...

  • Page 131: Cable Management

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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.

  • Page 132: Memory

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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.
  • Page 133 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 6. Repeat steps 4 and 5 for any additional modules that you want to install. ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. ✎...

  • Page 134: Vertically Oriented Expansion Card

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis Vertically Oriented Expansion Card 7.9.1 Expansion Card Retainer 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 135: Pci Expansion Card

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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.
  • Page 136 Removal and Replacement Procedures— Small Form Factor (SFF) 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 137: Pci Express Expansion Card

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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.

  • Page 138: Pci Riser Card Assembly And Backwall

    Removal and Replacement Procedures— Small Form Factor (SFF) 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 (Section 7.1).
  • Page 139 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7. Disconnect the data and power cables from the system board. 8. Disconnect the “Serial A” cable from the system board 1, remove the two screws that secure the serial connector to the backwall 2, then remove the serial connector 3. 9.
  • Page 140 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 10. Remove the long mounting screw that secures the system board tray to the chassis. 11. Slide the system board tray assembly towards the front of the chassis about 1/4 inch and lift the system board up and out of the chassis.
  • Page 141 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 12. 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. 13.
  • Page 142 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 14. Install the serial connector into the new backwall 1 using the two screws that were removed from the serial connector in a previous step 2. Reconnect the “Serial A” cable to the system board 3.
  • Page 143 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 20. 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. 21.

  • Page 144: 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. 7.11.1 Drive Positions...

  • Page 145: 2Optical Drive

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.11.2 Optical Drive Ä CAUTION: All removable media should be taken out of the drives before removing the drive from the computer. ✎ An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD+R/RW, or CD-RW/DVD Combo drive.
  • Page 146 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 5. Disconnect the power and data cables from the rear of the optical drive. 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 147: 3External 3.5-Inch Drive

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.11.3 External 3.5-inch Drive 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 (Section 7.1). 3. Remove the computer cover (Section 7.5).
  • Page 148 Removal and Replacement Procedures— Small Form Factor (SFF) 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 149: 4Primary Hard Drive

    CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to run the Restore Plus! CD to load the HP factory-installed files. Ä...
  • Page 150 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 5. Remove the security clip that secures the backwall to the power supply. 6. Rotate the power supply to its full upright position. 7–32 390742-001 Service Reference Guide, dc7600...
  • Page 151 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 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.
  • Page 152 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 153: Fan Shroud

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.12 Fan Shroud 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 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 154: Front I/O Devices

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.13 Front I/O Devices 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the two screws that secure the front I/O device to the chassis 1. 4.

  • Page 155: Power Switch Assembly

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.14 Power Switch Assembly 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Disconnect the power switch/LED cable from the system board. 4. Squeeze the switch holder retaining clips together at the front of the chassis 1 and push the switch assembly out of the chassis 2.

  • Page 156: Heatsink

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.15 Heatsink 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Disconnect the fan control cable from the system board. 5.

  • Page 157: Processor

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.16 Processor 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Disconnect the heatsink control cable from the system board and remove the heatsink (Section 7.15).
  • Page 158 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: 7–40...

  • Page 159: Speaker

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.17 Speaker 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Remove the heatsink control cable and the heatsink from the system board (Section 7.15).

  • Page 160: Power Supply

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.18 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 161 Removal and Replacement Procedures— Small Form Factor (SFF) 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. Ä...

  • Page 162: System Board

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.19 System Board 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove all PCI and PCI Express expansion boards (Section 7.9). 4. Remove the fan shroud from the chassis (Section 7.11).
  • Page 163 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 8. Disconnect the serial port from the system board. 9. Disconnect the balance of the cables from the system board. 10. Remove the long mounting screw that secures the system board tray to the chassis. Service Reference Guide, dc7600 390742-001 7–45...
  • Page 164 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 11. Slide the system board tray assembly towards the front of the chassis, about 1/4 inch and lift the system board up and out of the chassis. 12. Remove the heatsink from the system board and the system board tray (Section 7.15).

  • Page 165: Chassis Fan

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.20 Chassis Fan 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Disconnect the chassis fan cable from the system board. 5.

  • Page 166: 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 167: 1Type 1 Battery Holder

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.21.1 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 168: 2Type 2 Battery Holder

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.21.2 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.

  • Page 169: Type 3 Battery Holder

    Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7.21.3 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 170 Removal and Replacement Procedures— Small Form Factor (SFF) Chassis 7–52 390742-001 Service Reference Guide, dc7600...

  • Page 171: Removal And Replacement Procedures - Ultra-Slim Desktop (Usdt) Chassis

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the diagnostics utility to verify that all components operate properly. ✎...
  • Page 172 Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8. If the PC is mounted in the accessory mounting stand, loosen the thumbscrew that secures the computer to the stand 1. 9. Slide the computer forward until it is disengaged from the hooks on the front of the tower stand, then lift the computer off the stand 2 and lay the computer down on its rubber feet.

  • Page 173: External Security Devices

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.2 External Security Devices 8.2.1 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. 8.2.2 Installing a Padlock A padlock may be used by itself to secure the access panel to the computer chassis.

  • Page 174: Computer Access Panel

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.3 Computer Access Panel 1. Prepare the computer for disassembly (Section 8.1). 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 175: Multibay Device

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.4 MultiBay Device Ä CAUTION: The MultiBay device must be removed from the chassis before the front panel assembly is removed. Failure to remove the MultiBay device will result in severe damage to the computer. 1.

  • Page 176: Multibay Riser Card

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.5 MultiBay Riser Card Ä CAUTION: The MultiBay riser card must be removed before removing the front panel assembly. Failure to do so will damage the MultiBay riser card and the front panel assembly. 1.

  • Page 177: Front Panel Assembly

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.6 Front Panel Assembly 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device from the drive cage (Section 8.4). 4.

  • Page 178: Front Bezel

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.7 Front Bezel 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4. Remove the MultiBay riser card (Section 8.5).

  • Page 179: Chassis Fan

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.8 Chassis Fan 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4. Remove the MultiBay riser card (Section 8.5).

  • Page 180: Cable Management

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.9 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 181: Memory

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.10 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.
  • Page 182 Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. 8–12 390742-001 Service Reference Guide, dc7600...

  • Page 183: Expansion Card Cage

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.11 Expansion Card Cage 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Rotate the bail handle on the expansion card cage 1 and lift the cage straight up 2. To install the cage, align the cage in the guides on the chassis and press it firmly into place.

  • Page 184: Expansion Card

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.12 Expansion Card 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the expansion card cage (Section 8.11). 4. Open the latch 1 by squeezing the retainer fingers together and rotate the latch out of the way 2.
  • Page 185 Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 7. Slide the bracket on the end of the expansion card down into the slot and press the card firmly into the socket. ✎ When you install an expansion card, make sure you press firmly on the card so that the whole connector seats properly in the expansion card socket on the riser board.

  • Page 186: Expansion Card Retaining Latch

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.13 Expansion Card Retaining Latch 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the expansion card cage (Section 8.11). 4. Open the latch 1 by squeezing the retainer fingers together, then rotate the latch out of the way 2.

  • Page 187: Hood Sensor

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.14 Hood Sensor 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the expansion card cage (Section 8.11). 4. Disconnect the cable from the system board 1 and then slide the hood sensor out of the slot in the chassis 2.

  • Page 188: Hard Drive

    CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to run the Restore Plus! CD to load the HP factory-installed files. Ä...
  • Page 189 Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 7. Pull the drive release lever away from the hard drive 1, then lift the cable-end of the drive up 2 and pull it towards the center of the chassis 3 to remove it from the drive cage. 8.

  • Page 190: Front I/O Device

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.16 Front I/O Device 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4.

  • Page 191: Heatsink Assembly

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.17 Heatsink Assembly 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4. Remove the MultiBay riser card (Section 8.5).

  • Page 192: Processor

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.18 Processor 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4. Remove the MultiBay riser card (Section 8.5).
  • Page 193 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:...

  • Page 194: Power Supply

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.19 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 195: 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 196: 1Type 1 Battery Holder

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.20.1 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 197: 2Type 2 Battery Holder

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.20.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp 1 that extends above one edge of the battery. When the battery pops up, lift it out. 2.

  • Page 198: 3Type 3 Battery Holder

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.20.3 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 199: Speaker

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.21 Speaker 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Disconnect the speaker cable from the system board. 4. Remove the front panel assembly (Section 8.6).

  • Page 200: System Board

    Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.22 System Board 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove any MultiBay device in the drive cage (Section 8.4). 4. Remove the MultiBay riser card (Section 8.5).
  • Page 201 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 Signal Data Unused Ground +5 VDC Clock Unused Mouse Connector and Icon Signal...

  • Page 202: Ethernet Aui

    Connector Pin Assignments Ethernet RJ-45 Connector and Icon Signal (+) Transmit Data (-) Transmit Data (+) Receive Data Unused Unused (-) Receive Data Unused Unused Ethernet AUI Connector and Icon Signal Signal Ground Positive AUI Differential Receive Negative AUI Differential Collision +12V Positive AUI Differential Collision Ground...

  • Page 203: 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 204 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 205 Connector Pin Assignments Ultra SCSI Connector and Icon Signal Signal Signal Signal 1-11 Ground Reserved RST # Reserved TERMPWR MSG # Open Reserved SEL # Reserved Ground 15-25 Ground ATN # REQ # Ground Input/Output Ground BSY # Ground ACK # External Infrared Transceiver Connector and Icon Signal...
  • Page 206 Connector Pin Assignments ATA/ATAPI (IDE) Standard Drive Cable Connector Signal Signal Signal Reset DMAK Ground DD14 Ground INTRQ DD15 IOCS16 Ground (Key) PDIAG (cable detect) DMARQ DD10 Ground DIOW CS1FX DD11 Ground CS3FX DIOR DASP DD12 Ground Ground IORDY DD13 CSEL MultiBay CD-ROM Adapter Connector...
  • Page 207 Connector Pin Assignments 24-Pin Power Connector Signal Signal Signal Signal +3.3 V +3.3 V +3.3 V -12 V open +5 Vaux +5 V +5 V +12 V PSON +5 V +12 V +5 V +5 V +3.3 V 24-Pin MicroFit Power Connector Signal Signal...
  • Page 208 Connector Pin Assignments 6-Pin Power (for CPU) Connector and Icon Signal 12 V CPU 12 V CPU +12 V SATA Data and Power Drive Connector Signal Signal Signal Signal Ground Ground Ground V 3.3 V 3.3 V 3.3 Ground Ground Ground Ground Reserved...
  • Page 209 Connector Pin Assignments PCI Express x1, x4, x8, and x16 PCI Express Connector Pin A Signal Signal Signal Signal Signal PRSNT1# JTAG3 PERST# PERp0 PERp1 +12V JTAG4 PERn0 PERn1 +12V JTAG5 REFCLK+ +3.3v REFCLK- RSVD JTAG2 +3.3v PERp2 PERn(2) PERn4 RSVD PERp7 RSVD...
  • Page 210 Connector Pin Assignments PCI Express x1, x4, x8, and x16 PCI Express Connector Pin B Signal Signal Signal Signal Signal +12V SMDAT WAKE# +12V RSVD PRSNT2# RSVD +3.3v PETp2 JTAG1 PETp0 PETp1 PETn2 SMCLK 3.3vAux PETn0 PETn1 PRSNT2# PETp6 PETn7 PETp3 PETp5 PRTn6...

  • Page 211: Dvi Connector

    Connector Pin Assignments DVI Connector Connector and Icon Signal Signal T.M.D.S. Data2- T.M.D.S. Data3+ T.M.D.S. Data2+ +5V Power T.M.D.S. Data2/4 Shield Ground (for +5V) T.M.D.S. Data4- Hot Plug Detect T.M.D.S. Data4+ T.M.D.S. Data0- T.M.D.S. Data0+ DDC Clock T.M.D.S. Data0/5 Shield DDC Data T.M.D.S.
  • Page 212 Connector Pin Assignments A–12 390742-001 Service Reference Guide, dc7600...

  • Page 213: General Requirements

    Power Cord Set Requirements The power supplies on some computers have external power switches. The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power switches are equipped with internal switches that sense the incoming voltage and automatically switch to the proper voltage.
  • Page 214 Power Cord Set Requirements Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Accrediting Accrediting Country Agency Country Agency Australia (1) EANSW Italy (1) Austria (1) Japan (3) METI Belgium (1) CEBC Norway (1) NEMKO Canada (2) Sweden (1)
  • Page 215 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 Probable Cause...
  • Page 216 Run Computer Setup (F10 Setup). incorrect. Make sure memory module(s) (if any) are installed properly. If third party memory has been added, test using HP-only memory. Verify proper memory module type. 201-Memory Error RAM failure. Run Computer Setup (F10 Setup) or Windows utilities.
  • Page 217 POST Error Messages POST Error Messages (Continued) Screen Message Probable Cause Recommended Action 207-ECC Corrected Memory module is If additional memory was recently Single Bit Errors in experiencing correctable added, remove it to see if the problem DIMM slot(s) errors. remains.
  • Page 218 POST Error Messages POST Error Messages (Continued) Screen Message Probable Cause Recommended Action 304-Keyboard or Keyboard failure. Reconnect the keyboard with computer System Unit Error turned off. Ensure that none of the keys are depressed. Replace keyboard. Replace system board. 404-Parallel Port Both external and internal Remove any parallel port expansion...
  • Page 219 POST Error Messages POST Error Messages (Continued) Screen Message Probable Cause Recommended Action 605-Diskette Drive Type Mismatch in drive type. Run Computer Setup (F10 Setup). Error Disconnect any other diskette controller devices (tape drives). Clear CMOS. 610-External Storage External tape drive not Reinstall tape drive or press F1 and Device Failure connected.
  • Page 220 System test if applicable. that will fix an erroneous Apply firmware patch if applicable. (visit error message.) www.hp.com/support) Back up contents and replace hard drive. 1785-MultiBay (for integrated MultiBay/ Ensure the MultiBay device is fully incorrectly installed USDT systems) inserted.
  • Page 221 Number. has become corrupted. has data in the field or will not allow the serial number to be entered, download from http://www.hp.com and run SP5572.EXE (SNZERO.EXE). Run Computer Setup and try to enter serial number under Security, System ID, then save changes.
  • Page 222 POST Error Messages POST Error Messages (Continued) Screen Message Probable Cause Recommended Action Network Server Mode Keyboard failure while Reconnect keyboard with computer Active and No Network Server Mode turned off. Keyboard Attached enabled. Check connector for bent or missing pins.

  • Page 223: Post Diagnostic Front Panel Leds And Audible Codes

    POST Error Messages 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. ✎...
  • Page 224 Reseat DIMMs. Power on the system. flashes five times, error. Replace DIMMs one at a time to isolate once every the faulty module. second, followed Replace third-party memory with HP by a two second memory. pause. Replace the system board. Red Power LED Pre-video...
  • Page 225 POST Error Messages POST Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED System powers on Check that the voltage selector, located on flashes nine times, but is unable to the rear of the power supply (some once every boot.
  • Page 226 POST Error Messages C–12 390742-001 Service Reference Guide, dc7600...

  • Page 227: 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 228: Solving Minor Problems

    Troubleshooting Without Diagnostics Solving Minor Problems Solving Minor Problems Problem Cause Possible Solution Computer appears Software control of the 1. Press and hold the power button locked up and will not power switch is not for at least four seconds until the turn off when the power functional.
  • Page 229 Troubleshooting Without Diagnostics Solving Minor Problems (Continued) Problem Cause Possible Solution Poor performance is Program previously Restart the computer. experienced. accessed did not release (continued) reserved memory back to the system Virus resident of the hard Run virus protection program. drive.
  • Page 230 Troubleshooting Without Diagnostics Solving Minor Problems (Continued) Problem Cause Possible Solution System does not power System unable to power Press and hold the power button for on and the LEDs on the less than 4 seconds. If the hard drive front of the computer LED turns green, then: are not flashing.

  • Page 231: Solving Power Supply Problems

    Troubleshooting Without Diagnostics Solving Power Supply Problems Solving Power Supply Problems Problem Cause Solution Power supply shuts down Voltage selector switch Select the proper AC voltage. intermittently. on rear of computer chassis (some models) is not switched to correct line voltage. Power supply fault.

  • Page 232: Solving Diskette Problems

    Troubleshooting Without Diagnostics Solving Diskette Problems Solving Diskette Problems Problem Cause Solution Diskette drive light stays on. Diskette is damaged. In Microsoft Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now.
  • Page 233 Troubleshooting Without Diagnostics Solving Diskette Problems (Continued) Problem Cause Solution A problem has occurred The directory structure is In Windows XP, right-click Start, with a disk transaction. bad, or there is a click Explore, and select a drive. problem with a file. Select File >...

  • Page 234: Solving Hard Drive Problems

    Troubleshooting Without Diagnostics Solving Hard Drive Problems Solving Hard Drive Problems Problem Cause Solution Hard drive error occurs. Hard disk has bad Use a utility to locate and block sectors or has failed. usage of bad sectors. If necessary, reformat the hard disk. In Windows XP, right-click Start, click Explore, and select a drive.
  • Page 235 Troubleshooting Without Diagnostics Solving Hard Drive Problems (Continued) Problem Cause Solution Nonsystem disk/NTLDR System files missing or 1. Insert a bootable system diskette missing message. not properly installed. and restart. (continued) 2. Check hard drive format using fdisk: If NTFS formatting, use a third party reader to evaluate the drive.

  • Page 236: Solving Multibay Problems

    Troubleshooting Without Diagnostics Solving MultiBay Problems Solving MultiBay Problems Problem Cause Solution Drive not found. You attempted to hot Shut down Windows and turn off plug a removable the computer. Insert the drive into hard drive that has the MultiBay, if it is not already DriveLock security inserted.
  • Page 237 3. Replace third-party memory beeps five times. Beeps with HP memory. continue for five iterations after which the LED flashes 4. Replace the system board. will continue until the problem is resolved.
  • Page 238 Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Solution Blank screen and the System board failure Replace the system board. power LED flashes Red (ROM detected failure seven times, once every prior to video.) second, followed by a two second pause, and the computer beeps seven times.
  • Page 239 Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Solution Image is not centered. Position may need Press the Menu button to access the adjustment. OSD menu. Select ImageControl/Horizontal Position or VerticalPosition to adjust the horizontal or vertical position of the image. “No Connection, Check Monitor video cable is Connect the video cable between...

  • Page 240: Solving Audio Problems

    Troubleshooting Without Diagnostics Solving Audio Problems Solving Audio Problems Problem Cause Solution Sound cuts in and out. Processor resources are Shut down all open being used by other processor-intensive applications. applications. Direct sound latency, In Windows XP: common in many media 1.
  • Page 241 Troubleshooting Without Diagnostics Solving Audio Problems (Continued) Problem Cause Solution Sound does not come Digital CD audio is not Enable digital CD audio: out of the speaker or enabled. 1. From the Control Panel, select headphones. (continued) System. 2. On the Hardware tab, click the Device Manager button.

  • Page 242: 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 243 Troubleshooting Without Diagnostics Solving Keyboard and Mouse Problems (Continued) Problem Cause Solution Keyboard commands and Keyboard needs Replace the keyboard. typing are not recognized repairs. by the computer. Wireless device error. 1. Check software, if available, for (continued) device battery status. 2.

  • Page 244: 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 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 245 3. Replace third-party memory beeps five times. Beeps with HP memory. continue for five iterations after which the LED flashes 4. Replace the system board. will continue until the problem is resolved.

  • Page 246: 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 Connections not functioning. enabled. application in Control Panel to enable Wake-on-LAN.
  • Page 247 Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Cause Solution Diagnostics passes, but Network drivers are not Make sure the network drivers are the computer does not loaded, or driver loaded and that the driver communicate with the parameters do not match parameters match the configuration network.

  • Page 248: 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...

  • Page 249: 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 250 Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems (Continued) Problem Cause Solution Movie will not play in the Decoder software is not Install decoder software. DVD drive. (continued) installed. Damaged media. Replace media. Movie rating locked out Use DVD software to remove by parental lock.

  • Page 251: Solving Drive Key Problems

    Troubleshooting Without Diagnostics Solving Drive Key Problems Solving Drive Key Problems Problem Cause Solution Drive Key is not seen as a The drive letter after the Change the default drive letter for drive letter in Windows XP. last physical drive is not the Drive Key in Windows XP.

  • Page 252: Solving Internet Access Problems

    Troubleshooting Without Diagnostics Solving Internet Access Problems Solving Internet Access Problems Problem Cause Solution Unable to connect to the Internet Service Provider Verify Internet settings or contact the Internet. (ISP) account is not set ISP for assistance. up properly. Modem is not set up Reconnect the modem.
  • Page 253 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 254 Troubleshooting Without Diagnostics D–28 390742-001 Service Reference Guide, dc7600...
  • Page 255 System Board and Riser Board Reference Designators These reference designators are used on most but not all HP system and riser boards. Designator Component Battery socket/Battery LED - 5V_Aux (on) Health-LED UID LED Power LED CR35 Hard drive activity LED...
  • Page 256 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 257 System Board and Riser Board Reference Designators 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...
  • Page 258 System Board and Riser Board Reference Designators Designator Component (Continued) Clock chip 64 bit Bridge LOM1 LOM1 EEPROM LOM1 PHY Audio Codec Audio amplifier LOM2 LOM2 EEPROM LOM2 PHY SPI ROM Fan controller TMDS controller Parallel port diode array First serial port transceiver Second serial port transceiver VRM controller USB front port power switch...

  • Page 259: Dimm Sockets

    Memory The dc7600 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 260 Memory The system board shown may differ from the one in your product. Item Description Socket Color DIMM socket XMM1, Channel A Black DIMM socket XMM2, Channel A White DIMM socket XMM3, Channel B Black DIMM socket XMM4, Channel B White The system will automatically operate in single channel mode, dual channel Asymmetric mode, or a a higher-performing dual channel Interleaved mode, depending on how the DIMMs are...
  • Page 261 USDT removal and replacement 8–4 cooling fan 5–7 Altiris 3–2 cover lock security 3–22 Deployment Solution Agent 3–2 electrostatic discharge 5–3 HP Client Management Solutions 3–4 FailSafe Key 3–23 asset tracking 3–14 keyboard cleaning 5–6 ATA/ATAPI (IDE) drive cable pin assignments keyboard keys 5–6 A–6...
  • Page 262 Index desktop to minitower conversion 6–39 conversion disassembly preparation 6–1 CMT desktop to minitower 6–39 diskette drive bezel removal and replacement CMT minitower to desktop 6–42 6–8 Convertible Minitower See CMT diskette drive removal and replacement 6–25 country-specific power cord set requirements B–2 drive positions 6–19 cover lock, smart 3–22 expansion card guide removal and replacement...
  • Page 263 CMT removal and replacement 6–3 SFF standard socket removal and replacement SFF removal and replacement 7–4 7–17 HP Client Management Solutions 3–4 USDT removal and replacement 8–14 HP Client Manager 3–3 expansion card guide, CMT removal and HP Insight Diagnostics 2–14 replacement 6–18...
  • Page 264 Index CMT removal and replacement 6–14 SFF removal and replacement 7–19 memory PCI Express pin assignments A–9 CMT removal and replacement 6–10 PCN (Proactive Change Notification) 3–6 DDR2 specifications F–1 POST (Power-On Self-Test) 2–1 SFF removal and replacement 7–14 POST error messages C–1 C–7 socket assignments F–2 power button, configuring 3–13...
  • Page 265 CMT 6–4 SFF hard drive 7–31 DriveLock 3–20 SFF heatsink 7–38 embedded TPM chip 3–24 SFF hood sensor 7–4 HP ProtectTools Security Manager 3–24 SFF memory 7–14 MultiBay 3–20 SFF optical drive 7–27 password 3–17 Service Reference Guide, dx7600 390742-001...
  • Page 266 7–1 Drive Protection System 3–24 drive bezel inserts 7–12 Fault Notification and Recovery 3–24 drive positions 7–26 HP Client Management Solutions using Altiris expansion card removal and replacement 7–17 3–4 expansion card retainer removal and HP Client Manger 3–3 replacement 7–16...
  • Page 267 5–5 Troubleshooting D–1 Wake-on-LAN feature D–20 Ultra SCSI pin assignments A–5 Web sites Ultra-Slim Desktop chassis 5–2 HP 1–1 universal chassis clamp lock 7–6 HPQFlash 3–7 unlocking Smart Cover Lock 3–23 PC Deployment 3–1 USB pin assignments A–3 Proactive Change Notification 3–6...
  • Page 268 Index Index–8 390742-001 Service Reference Guide, dx7600...

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