Page 1 8th 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 Business Desktop d300 and dx6050 Series 8th Edition Document Part Number: 319865-008 May 2004...
Page 4 Adobe, Acrobat, and Acrobat Reader are trademarks or registered trademarks of Adobe Systems Incorporated. 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
3.3.1 HP Client Manager Software ........
Page 6 5.1.3 Desktop (DT) ........
Page 7 5.2.2 Preventing Electrostatic Damage to Equipment....... . . 5–3 5.2.3 Personal Grounding Methods and Equipment ........5–4 5.2.4 Grounding the Work Area .
Page 8 7.19Power Supply ............. . 7–35 8 Removal and Replacement Procedures— Desktop (DT) Chassis 8.1 Preparation for Disassembly .
Page 9 8.10.1Drive Positions ............8–15 8.10.2Removing a Drive .
Page 10 Contents viii 319865-008 Service Reference Guide, d300, dx6050...
Page 11: Installing The Operating System
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 Windows 2000.
Page 12: Converting To Ntfs
The Microsoft Windows 2000 Professional, Windows XP Home, or 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 will also be installed at that time on selected models:...
Page 13: Setup Utilities And Diagnostics Features
Establish and manage passwords and other security 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...
Page 14: 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. Modify the boot order of bootable devices such as hard drives, diskette drives, optical drives, or LS-120 drives.
Page 15: Using Computer Setup (F10) Utilities
2.2.1 Using Computer Setup (F10) Utilities Computer Setup can be accessed only by turning on the computer or restarting the system. To access the Computer Setup Utilities menu, complete the following steps: 1. Turn on or restart the computer. If you are in Windows, click Start >Shut Down >Restart. 2.
Page 16: Computer Setup Menu
Setup Utilities and Diagnostics Features 2.2.2 Computer Setup Menu Heading Option File System Information About Set Time and Date Save to Diskette Restore from Diskette Set Defaults and Exit Ignore Changes and Exit Save Changes and Exit Storage Device Configuration 2–4 Description Lists product name, processor type/speed/stepping, cache...
Page 17 Heading Option Storage Device (continued) Configuration (continued) Options Service Reference Guide, d300 Description Drive Type Emulation Options (continued) (continued) ATAPI LS-120 None (treated as Other). Diskette (treated as diskette drive). Transfer Mode (IDE devices only) Specifies the active data transfer mode. Options (subject to device capabilities) are PIO 0, Max PIO, Enhanced DMA, Ultra DMA 0, and Max UDMA.
Page 18 Setup Utilities and Diagnostics Features Heading Option *Option supported on select models. Storage Options (continued) (continued) IDE DPS Self-Test Controller Order *Option supported on select models. 2–6 Description Secondary IDE Controller * Allows you to enable or disable the secondary IDE/ATA controller.
Page 19 See the Troubleshooting Guide for more information. Allows you to specify whether the password is required for warm boot (CTRL+ALT+DEL). See the Desktop Management Guide for more information. Allows you to set up a password and enable/disable the embedded Security device.
Page 20 This selection will only appear when at least one drive that supports the DriveLock feature is attached to the system. See the Desktop Management Guide for more information. Allows you to set: • Asset tag (18-byte identifier) and ownership Tag (80-byte identifier displayed during POST).
Page 21 Heading Option Security Restore Master (continued) Boot Record* Device Security* Network Service Boot *Option supported on select models. Service Reference Guide, d300 Description Restores the backup Master Boot Record to the current bootable disk. Only appears if all of the following conditions are true: MBR Security is enabled.
Page 22 Setup Utilities and Diagnostics Features Heading Option Advanced** Power-On Options * Available on select models. **These options should be used by advanced users only. 2–10 Description Allows you to set: POST mode (QuickBoot, FullBoot, or FullBoot every 1-30 days). POST messages (enable/disable). F9 prompt (enable/disable).
Page 23 Heading Option Advanced** Power-On Options (continued) (continued) BIOS Wakeup* Onboard Devices PCI Devices Bus Options* *Available on select models. **These options should be used by advanced users only. Service Reference Guide, d300 Description Allows you to set: (continued) POST Delay (in seconds) (enable/disable). Enabling this feature will add a user-specified delay to the POST process.
Page 24 Setup Utilities and Diagnostics Features Heading Option Advanced* Device options (continued) PCI VGA Configuration * Available on select models. **These options should be used by advanced users only. 2–12 Description Allows you to set: Printer mode (bi-directional, EPP+ECP, output only). Num Lock state at power-on (off/on).
Page 25: Diagnostics For Windows
Running tests is optional but recommended after installing or connecting a new device. Third party devices not supported by HP may not be detected. Save, print, or display the information generated by the utility. 2.3.1 Detecting Diagnostics for Windows Some computers ship with the Diagnostics for Windows preloaded, but not preinstalled.
Page 26: Using Categories In Diagnostics For Windows
2.3.3 Using Categories in Diagnostics for Windows To use categories: 1. Click Start > HP Information Center > Diagnostics for Windows. You can also select the Diagnostics for Windows icon, located in the Control Panel. The screen displays the overview of the computer hardware and software.
Page 27 Menu Bar—File, Categories, Navigation, Level, Tab, Help At the top of the Diagnostics for Windows screen is the Menu Bar consisting of six pull-down menus. Selecting an item will provide the following information on the system: File—Save As, Print, Printer Setup, Exit Categories System—System board, ROM, date, and time Asset Control—Asset tag, system serial number, and processor...
Page 28: Running Diagnostic Tests In Diagnostics For Windows
2.3.4 Running Diagnostic Tests in Diagnostics for Windows To run diagnostic tests: 1. Click Start > HP Information Center > Diagnostics for Windows. Alternately, you can access Diagnostics for Windows via the control panel. The screen displays the overview of the computer hardware and software. Five tabs are displayed below the row of icons: Overview, Test, Status, Log, and Error.
Page 29: Configuration Record
2.4.2 Running Configuration Record To run this program: 1. Click Start > HP Information Center > Configuration Record. Alternately, you can access Diagnostics for Windows via the control panel. The Configuration Record utility has two view options: Show Changed Items Only and Show All.
Page 30: Remote Diagnostics Enabling Agent
In addition, the Remote Diagnostics Enabling Agent identifies any computer hardware device problems signaled by the HP Management Agents. These hardware devices are automatically selected for testing by the Remote Diagnostics Enabling Agent.
Page 31: Restoring The Software
2.7 Restoring the Software The Windows operating system and software can be restored to its original state by using the Restore CD. See the Restore CD for complete instructions on using this feature. Service Reference Guide, d300 Setup Utilities and Diagnostics Features 319865-007 2–19...
Page 32 Setup Utilities and Diagnostics Features 2–20 319865-007 Service Reference Guide, d300...
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: Remote System Installation
Configuring the system BIOS settings. To initiate Remote System Installation, press 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: System Software Manager
Altiris solutions provide easy-to-use software distribution capabilities. When used in conjunction with System Software Manager, or HP Client Manager Software, administrators can also update ROM BIOS and device driver software from a central console.
Page 36: Subscriber's Choice
Enabling the system administrator to perform this task remotely, on multiple computers and personal computers, results in a consistent deployment of and greater control over HP PC ROM images over the network.
Page 37: Failsafe Boot Block Rom
State/Message ROMPaq diskette not present, is bad, or drive not ready. Enter password. Blink on in Keyboard locked in network mode. sequence, one-at-a-time— N,C,SL Boot Block ROM Flash successful. Turn power off, then on to reboot. 319865-008 Desktop Management 3–5...
Page 38: Replicating Your Setup
CAUTION: Do not use the power button to turn off the computer unless the system is not responding; Ä turning off the power without operating system interaction could cause damage to or loss of data on the hard drive. 3–6 http://h18000.www1.hp.com/im/ssmwp_more.html 319865-008 Service Reference Guide, d300, dx6050...
Page 39: Power Management
HP has made the task of locating, accessing, evaluating, and installing the latest support software easier. You can download the software from the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on your HP computer.
Page 40: Asset Tracking And Security
HP also offers several solutions for controlling access to valuable components and information. Security features such as the Smart Cover Sensor and the Smart Cover Lock, available on select models, help to prevent unauthorized access to the internal components of the personal computer.
Page 41 Intelligent user and system administrator. Manageability Guide. Displays ownership From the Computer Setup information, as defined by the Utilities (F10) menu. system administrator, during system startup (protected by setup password). 319865-008 Desktop Management How It Is Established 3–9...
Page 42 Desktop Management Security Features Overview (Continued) Feature DriveLock Smart Cover Sensor Master Boot Record Security Memory Change Alerts Ownership Tag For more information about Computer Setup, see the Computer Setup (F10) Utility Guide. Support for security features may vary depending on your specific computer configuration.
Page 43: Password Security
319865-008 Desktop Management How It Is Established Install a cable lock to secure the computer to a fixed object.
Page 44: Establishing A Power-On Password Using Computer Setup
Desktop Management 3.5.3 Establishing a Power-On Password Using Computer Setup Establishing a power-on password through Computer Setup prevents access to the computer when power is turned on, unless the password is entered. When a power-on password is set, Computer Setup presents Password Options under the Security menu. Password options include Password Prompt on Warm Boot.
Page 45 Enter to bypass the title screen, if necessary. key at the appropriate time, you must restart the computer and press 319865-008 Desktop Management 3–13...
Page 46: Drivelock
It is only available only when DriveLock-capable hard drives are detected. DriveLock is intended for HP customers for whom data security is the paramount concern. For such customers, the cost of the hard drive and the loss of the data stored on it is inconsequential when compared with the damage that could result from unauthorized access to its contents.
Page 47: 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 48: Smart Cover Sensor
4. Before exiting, click File > Save Changes and Exit. Smart Cover Lock The Smart Cover Lock is a software-controllable cover lock featured on select HP computers. This lock prevents unauthorized access to the internal components. Computers ship with the Smart Cover Lock in the unlocked position.
Page 49: Locking The Smart Cover Lock
PC component failure (such as processor or power supply) Forgotten password CAUTION: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order Ä this key before you need one (Tamper-resistant wrench PN 166527-001 or tamper-resistant bits PN 166527-002).
Page 50: Master Boot Record Security
Desktop Management 3.5.6 Master Boot Record Security The Master Boot Record (MBR) contains information needed to successfully boot from a disk and to access the data stored on the disk. Master Boot Record Security may prevent unintentional or malicious changes to the MBR, such as those caused by some computer viruses or by the incorrect use of certain disk utilities.
Page 51: Before You Partition Or Format The Current Bootable Disk
3.5.9 Fingerprint Identification Technology Eliminating the need to enter user passwords, HP Fingerprint Identification Technology tightens network security, simplifies the login process, and reduces the costs associated with managing corporate networks. Affordably priced, it is not just for high-tech, high-security organizations anymore.
Page 52: Fault Notification And Recovery
When a fault occurs, the computer displays a Local Alert message containing a description of the fault and any recommended actions. You can then view current system health by using the HP Client Manager Software. If the computer is connected to a network managed by HP Insight Manager, HP Client Manager Software, or other system management applications, the computer also sends a fault notice to the network management application.
Page 53: Serial And Parallel Ata Drive Guidelines And Features
Serial and Parallel ATA Drive Guidelines and PATA and SATA Device Information Characteristic Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length Data interface voltage differential Drive motor voltages Jumpers for configuring drive Data transfer rate 4.2 ATA Cables 4.2.1 SATA Data Cable...
Page 54: Sata Power Cable
Serial and Parallel ATA Drive Guidelines and Features 4.2.2 SATA Power Cable Usage V3.3 V3.3 V3.3 Ground Ground Ground 4.2.3 PATA Data Cable Signal Reset Ground DD10 DD11 DD12 DD13 4.2.4 PATA Power Cable Usage +12 V Ground Ground +5 V 4–2 Notes 3.3 V power...
Page 55: Pata Cable Layout
4.2.5 PATA Cable Layout The faces of industry-standard cable connectors are color-coded for easy recognition: System board connector = blue face Device 0 connector = black face Device 1 connector = gray face The color code of an industry-standard cable is applicable only if the drive’s jumper is in the cable-select position.
Page 56: Pata Drive Installation Guidelines
Serial and Parallel ATA Drive Guidelines and Features 4.3 PATA Drive Installation Guidelines Most computer system boards have two ATA (IDE) channels with a dedicated connector for each channel. One channel is designated as the primary and the other as the secondary channel. Each of the two channels can have up to two devices attached to it.
Page 57: Pata Attach Sequence Rules By Class Priority
4.3.2 PATA Attach Sequence Rules by Class Priority Drives should be attached in the sequence shown for optimum performance starting at position 1. Primary Channel* Secondary Channel *If there are three or more devices, two or more of which are hard drives, two hard drives should be attached to the primary channel first before following the General Attach Sequence Rule.
Page 58: Pata Attach Sequence Worksheet
Serial and Parallel ATA Drive Guidelines and Features 4.3.3 PATA Attach Sequence Worksheet Use the worksheet below for obtaining optimum system performance when setting up a computer with multiple drives. Use the General Attach Sequence Rule to determine the best drive installation sequence.
Page 59 Example 1: Three-Device Installation Sample A system has three devices: Ultra ATA-100 hard drive, CD-ROM drive, and a DVD drive. Using the Device Class Table in Ultra ATA-100 hard drive = Class 1 DVD drive = Class 2 CD-ROM drive = Class 3 Attach Sequence Worksheet—Three-Device Installation (Sample) Device Name Ultra ATA-100 hard drive...
Page 60: Pata Additional Drive Application Notes
Serial and Parallel ATA Drive Guidelines and Features Example 2: Four-Device Installation Sample A system has four devices: two Ultra ATA-100 hard drives, one DVD-CDR/W drive, and a ZIP-250 drive. Using the Device Class Table in Section 4.3.1, the devices may be reidentified as: Ultra ATA-100 hard drive = Class 1 Ultra ATA-100 hard drive = Class 1 DVD-CDR/W drive = Class 2...
Page 61: Pata Smart Drives
4.4 PATA 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 4.6.1 Legacy Mode The Legacy mode is used to access devices attached to the embedded IDE controllers. Each channel requires two fixed I/O address ranges and an IRQ for each. Primary Channel Command block: 1F0h - 1F7h Control block: 3F6h IRQ: 14...
Page 63: Mixed Devices Boot And Drive Letter Ordering
4.7 Mixed Devices Boot and Drive Letter Ordering SATA Configuration* Add as a separate channel (default). Used with Windows 2000 and XP. Add as a separate channel. Used with Windows 2000 and XP. Replace primary IDE channel. Used with Windows 9x, NT, and Linux.
Page 64 Serial and Parallel ATA Drive Guidelines and Features 4–12 319865-008 Service Reference Guide, d300, dx6050...
Page 65: Identifying The Chassis, Routine Care, And Disassembly Preparation
Identifying the Chassis, Routine Care, and This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source voltage is always applied to the Ä...
Page 66: Slim Tower (St)
Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1.2 Slim Tower (ST) 5.1.3 Desktop (DT) 5–2 319865-008 Service Reference Guide, d300, dx6050...
Page 67: Electrostatic Discharge Information
5.2 Electrostatic Discharge Information A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not appear to be affected at all and can work perfectly throughout a normal cycle.
Page 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: Routine Care
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 Transparent metallized shielding bags Transparent shielding tubes 5.3 Routine Care 5.3.1 General Cleaning Safety Precautions 1.
Page 70: Cleaning The Keyboard
Identifying the Chassis, Routine Care, and Disassembly Preparation 5.3.3 Cleaning the Keyboard Follow all safety precautions in 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.” When cleaning debris from under the keys, review all rules in Safety Precautions,”...
Page 71: Service Considerations
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 72: Cables And Connectors
Identifying the Chassis, Routine Care, and Disassembly Preparation 5.4.4 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 73: Removal And Replacement Procedures-Microtower (Μt) Chassis
Removal and Replacement Procedures— Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly. Not all features listed in this guide are available on all computers. Preparation for Disassembly Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Preparation,”...
Page 74: Unlocking The Smart Cover Lock
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 CD for more information about the Smart Cover Lock. If you cannot access Computer Setup to unlock the cover you will need to remove the locking solenoid by using the Smart Cover FailSafe Key (Spare part number 166527-001 or 166527-002).
Page 75: External Security Devices
6.3 External Security Devices 6.3.1 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. 6.3.2 Installing a Padlock A padlock may be used by itself to secure the access panel to the computer chassis.
Page 76: Access Panel
Removal and Replacement Procedures— Microtower (µT) Chassis 6.4 Access Panel 1. Prepare the computer for disassembly Ä CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 2.
Page 77: Front Bezel
6.5 Front Bezel 1. Prepare the computer for disassembly 2. Remove the access panel 3. To remove the front bezel, press in on the two bottom tabs on the left side of the bezel 1 so that they release from the chassis. Then press in on the upper tab on the left side of the bezel 2 so that it releases from the chassis.
Page 78 Removal and Replacement Procedures— Microtower (µT) Chassis To reinstall the front bezel, 1. Position the chassis in the upright position. 2. Insert the two hooks on the right side of the bezel 1 into the rectangular holes on the chassis then rotate the bezel into place 2 so that the three tabs on the left side of the bezel and the single tab on the upper right corner of the bezel snap into the slots on the chassis.
Page 79: Front Drive Bezels
6.6 Front Drive Bezels 1. Prepare the computer for disassembly 2. Remove the access panel 3. Remove the front bezel 6.6.1 5.25" Drive Bezel Blank Press the two retaining tabs on the inside of the large bezel 1 towards the outside of the bezel to release the bezel blank.
Page 80: Diskette Drive Bezel
Removal and Replacement Procedures— Microtower (µT) Chassis 6.6.2 Diskette Drive Bezel Press the two upper 1 or the two lower 2 tabs for the diskette drive bezel towards the center of the drive bezel and push the bezel out to remove it from the front bezel. To install a bezel or a bezel blank, reverse the removal procedure.
Page 81: Memory Modules
6.7 Memory Modules Ä CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. CAUTION: Static electricity can damage the electronic components of the computer or optional cards.
Page 82: Expansion Cards
Removal and Replacement Procedures— Microtower (µT) Chassis To reassemble the computer, reverse the removal procedure. 6.8 Expansion Cards 6.8.1 Expansion Slot Cover 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 83: Pci Expansion Card
6.8.2 PCI Expansion Card For preliminary steps, see 1. Lay the computer on its side with the open side facing up. If replacing a PCI expansion card go to step 2. If installing a PCI expansion card for the first time in a computer, skip to step 5. 2.
Page 84 Removal and Replacement Procedures— Microtower (µT) Chassis 6. When installing an expansion card, hold the card just above the expansion slot on the system board then move the card toward the rear of the chassis so that the bracket on the card is aligned with the open slot on the rear of the chassis 1.
Page 85: Agp Card
6.8.3 AGP Card For preliminary steps, see 1. Lay the computer on its side with the open side facing up. If replacing an AGP graphics card, go to step 2. If installing a AGP card for the first time in a computer, go to step 6. 2.
Page 86 Removal and Replacement Procedures— Microtower (µT) Chassis 9. Slide the slot cover lock down toward the expansion card brackets and slot covers to secure them in place. Installing the access panel will secure the slot cover lock. 6–14 319865-008 Service Reference Guide, d300, dx6050...
Page 87: Drives
6.9 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. Ä...
Page 88: Removing A Drive
Removal and Replacement Procedures— Microtower (µT) Chassis 6.9.2 Removing a Drive 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 89: Releasing The Drives
Disconnecting Hard Drive Cables Releasing the Drives 5. A latch drive bracket with release tabs secures the drives in the drive bay. Lift the release tab on the latch drive bracket 1 for the drive you want to remove, then slide the drive from its drive bay 2.
Page 90: Installing A Drive
Removal and Replacement Procedures— Microtower (µT) Chassis 6.9.3 Installing a Drive CAUTION: To prevent loss of work and damage to the computer or drive: Ä If you are inserting or removing a hard drive, shut down the operating system properly, then turn off the computer.
Page 91 Removal and Replacement Procedures— Microtower (µT) Chassis 3. Reconnect the power and data cables to the drive as shown in the following illustrations. Refer to Chapter 4, Section 4.3, “PATA Drive Installation Guidelines,” for information on attaching the cabling to get optimum performance. Connecting Optical Drive Cables Connecting Diskette Drive Cables Service Reference Guide, d300, dx6050...
Page 92 Removal and Replacement Procedures— Microtower (µT) Chassis Connecting Hard Drive Cables 4. Install the front bezel 5. Install the access panel 6. Turn on the computer. If you replaced the primary hard drive, the restore CD may be used to restore the operating system, software drivers, and/or any software applications that were preinstalled on the computer.
Page 93: Chassis Fan
6.10 Chassis Fan 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3. Disconnect the power cable that connects the chassis fan to the system board 1. 4.
Page 94: Front I/O Panel Housing Assembly
Removal and Replacement Procedures— Microtower (µT) Chassis 6.11 Front I/O Panel Housing Assembly 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 95: Front I/O Devices
6.12 Front I/O Devices 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3. Remove the front I/O panel assembly 4.
Page 96: Power Switch Assembly
Removal and Replacement Procedures— Microtower (µT) Chassis 6.13 Power Switch Assembly 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 97 9. Place the switch holder with switch installed into the inside of the front I/O panel housing and position the legs of the retaining clip into the clip slots. Press firmly so that the clips will penetrate the slot openings and latch into place. If one clip will not easily engage, it may be necessary to use the end of a ball point pen (or another thin, stiff object) to compress the clip leg while inserting it into the clip slot.
Page 98: Processor And Heatsink
Removal and Replacement Procedures— Microtower (µT) Chassis 6.14 Processor and Heatsink 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 99 8. Place the special heatsink spring compression tool (Spare Part Number 337599-001) over the retaining clip near the outer edge of the system board 1 and press down to release the clip from the clip retainers. 9. Twist the heatsink to break the bond between the heatsink and the processor and lift it 2 from the processor.
Page 100: System Board
Removal and Replacement Procedures— Microtower (µT) Chassis 6.15 System Board 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 101: 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 102: 1Type 1 Battery Holder
Removal and Replacement Procedures— Microtower (µT) Chassis 6.16.1 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 103: 2Type 2 Battery Holder
6.16.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery 1. When the battery pops up, lift it out. 2. To insert the new battery, slide one edge of the replacement battery under the holder’s lip 2 with the positive side up.
Page 104: 3Type 3 Battery Holder
Removal and Replacement Procedures— Microtower (µT) Chassis 6.16.3 Type 3 Battery Holder 1. To release the battery from its holder, press back lever 1 that extends above one edge of the battery. 2. When the battery pops up, lift it out 2. 3.
Page 105: Speaker
6.17 Speaker 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3. Move/remove any components necessary to gain access to the speaker. 4.
Page 106: Power Supply
Removal and Replacement Procedures— Microtower (µT) Chassis 6.18 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 107: Removal And Replacement Procedures-Slim Tower (St) Chassis
Removal and Replacement Procedures— Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly. Not all features listed in this guide are available on all computers. Preparation for Disassembly Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Preparation,”...
Page 108: Unlocking The Smart Cover Lock
Unlocking the Smart Cover Lock If you have locked the Smart Cover Lock use Computer Setup to unlock the lock. Refer to the Desktop Management Guide on the Documentation CD for more information about the Smart Cover Lock. If you cannot access Computer Setup to unlock the cover you will need to remove the locking solenoid by using the Smart Cover FailSafe Key (Spare part number 166527-001 or 166527-002).
Page 109 Removal and Replacement Procedures— Slim Tower (ST) Chassis To reattach the Smart Cover Lock, position the lock with the printed circuit board oriented as shown below. If the locking pin protrudes above the top lip of the chassis, press it down so that the access panel will clear it when installed.
Page 110: Hood Sensor
Removal and Replacement Procedures— Slim Tower (ST) Chassis Hood Sensor 1. Prepare the computer for disassembly 2. Loosen the thumbscrew 1, lift the computer from the computer stand 2, and lay it on its side 3. 3. Remove the computer access panel 4.
Page 111 Removal and Replacement Procedures— Slim Tower (ST) Chassis 7. Slide the hood sensor switch towards the inside of the computer 1. To install the hood sensor, reverse the removal procedure. Service Reference Guide, d300, dx6050 319865-008 7–5...
Page 112: External Security Devices
As shown, there are two acceptable methods for using the cable lock.While both methods work, for added security HP recommends that you use the method shown on the left where the cable lock penetrates both the access panel and the chassis.
Page 113: Padlock
7.4.2 Padlock A padlock may be used by itself to secure the access panel to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures—...
Page 114: Computer Access Panel
Removal and Replacement Procedures— Slim Tower (ST) Chassis Computer Access Panel 1. Prepare the computer for disassembly Ä CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 2.
Page 115: Front Bezel
Front Bezel 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Pull up on the three release tabs 1 on the top of the bezel, then pull the front bezel away from the chassis 2. To reinstall the front bezel, reverse the removal procedure Service Reference Guide, d300, dx6050 Removal and Replacement Procedures—...
Page 116: Front Drive Bezels
Removal and Replacement Procedures— Slim Tower (ST) Chassis Front Drive Bezels 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Remove the front bezel 4. Press the large retaining tab 1 on the left side of the bezel insert to the left and push the cover out of the front bezel 2.
Page 117: Memory Modules
Memory Modules Ä CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other. CAUTION: Static electricity can damage the electronic components of the computer or optional cards.
Page 118: Pci Expansion Card
Removal and Replacement Procedures— Slim Tower (ST) 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. If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor.
Page 119 Removal and Replacement Procedures— Slim Tower (ST) Chassis 6. If you are removing an expansion card from a PCI 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 then pull it in toward the center of the chassis to release it from the chassis frame.
Page 120 Removal and Replacement Procedures— Slim Tower (ST) Chassis To install a PCI expansion card: 1. Place the card under the rear panel bracket 1, then firmly push the expansion card into the connector 2. Ensure that the card is firmly seated in the expansion card slot. Be sure not to touch the rear panel bracket or other components in the chassis when installing an expansion card.
Page 121: Drives
7.10 Drives The computer supports up to three drives. 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. Ä CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard drive.
Page 122: 2Cable Routing
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.10.2 Cable Routing CAUTION: The drive data and power cables must be kept clear of the power supply and the power Ä supply fan to avoid damage or restrict air flow. Follow these guidelines when routing the cables in the computer: 1.
Page 123: 3Optical Drive
7.10.3 Optical Drive CAUTION: All removable media should be taken out of the drives before removing the drive from the Ä computer. An optical drive is a CD-ROM, CD-RW, or DVD-ROM drive. 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, “Unlocking the Smart Cover 2.
Page 124 Removal and Replacement Procedures— Slim Tower (ST) Chassis When replacing the drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails. 2. Position the guide screws on the drive into the J-slots in the drive bay 1. Then, slide the drive towards the rear of the computer 2.
Page 125 3. Raise the Easy Access drive bay to the upright position and connect the flat ribbon cable and audio cable to the system board. 4. Connect the power cable, flat ribbon cable, and audio cable to the rear of the optical drive. 5.
Page 126: 4External 3.5-Inch Drive
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.10.4 External 3.5-inch Drive 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, “Unlocking the Smart Cover 2. Prepare the computer for disassembly 3.
Page 127 When replacing the drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails. The guide screws on a 3.5-inch diskette drive 1 are placed closer together than on the hard drive 2.
Page 128: 5Primary Hard Drive
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.10.5 Primary Hard Drive 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, “Unlocking the Smart Cover 2. Prepare the computer for disassembly 3.
Page 129 7. Press and hold the drive release latch 1. 8. Slide the drive to the right of the bay 2, then pull the drive from the bay 3. To replace the hard drive, reverse the above procedure. When replacing the hard drive, transfer the four screws from the old drive to the new one. The screws take the place of drive rails.
Page 130: Front I/O Devices
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.11 Front I/O Devices 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, “Unlocking the Smart Cover 2. Prepare the computer for disassembly 3.
Page 131: Power Switch Assembly
7.12 Power Switch Assembly 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, “Unlocking the Smart Cover 2. Prepare the computer for disassembly 3. Disconnect the power switch/LED cable from the system board. 4.
Page 132: System Board
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.13 System Board 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Remove all PCI expansion boards 4. Remove the AGP graphics card 5. Disconnect all cables connected to the system board, noting their location for reinstallation. 6.
Page 133: Chassis Fan
7.14 Chassis Fan 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Remove the system board 4. Remove the chassis fan cable from the wiring harness and from cable clip 1 near the front of the chassis. 5.
Page 134: 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 135: 1Type 1 Battery Holder
7.15.1 Type 1 Battery Holder 1. Lift the battery out of its holder. 2. Slide the replacement battery into position, positive side up. 3. The battery holder automatically secures the battery in the proper position. 4. Replace the computer cover or access panel. 5.
Page 136: 2Type 2 Battery Holder
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.15.2 Type 2 Battery Holder 1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery 1. When the battery pops up, lift it out. 2.
Page 137: Processor And Heatsink, Type 1
7.16 Processor and Heatsink, Type 1 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Lift up the lever that secure the fan to the heatsink 1 and rotate the fan up 2. 4. Release the two latch locks 3 and raise the legs that secure the latches to the base of heatsink mount 4.
Page 138: Processor And Heatsink, Type 2
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.17 Processor and Heatsink, Type 2 1. Prepare the computer for disassembly 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on 3.
Page 139 8. Place the special heatsink spring compression tool (Spare Part Number 337599-001) over the retaining clip near the outer edge of the system board 1 and press down to release the clip from the clip retainers. 9. Twist the heatsink to break the bond between the heatsink and the processor and lift it 2 from the processor.
Page 140: Speaker
Removal and Replacement Procedures— Slim Tower (ST) Chassis 7.18 Speaker 1. Prepare the computer for disassembly 2. Remove the computer access panel 3. Rotate the drive cage to its upright position. 4. Disconnect the speaker wire from the system board. 5.
Page 141: Power Supply
7.19 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. 1.
Page 142 Removal and Replacement Procedures— Slim Tower (ST) Chassis When installing the power supply, reverse the removal procedure, making sure that the clips on the bottom of the rear panel fit in the slots provided. 7–36 319865-008 Service Reference Guide, d300, dx6050...
Page 143: Removal And Replacement Procedures-Desktop (Dt) Chassis
CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong screw in an application may damage the unit. Service Reference Guide, d300, dx6050 Desktop (DT) Chassis Section 8.4, “External Security 319865-008 for initial Section 8.2,...
Page 144: Unlocking The Smart Cover Lock
8.2 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 CD for more information about the Smart Cover Lock. If you cannot access Computer Setup to unlock the cover you will need to remove the locking solenoid by using the Smart Cover FailSafe Key (Spare part number 166527-001 or 166527-002).
Page 145: Hood Sensor
4. Slide the hood sensor switch towards the front of the computer 1 and lower it down through the slot 2. To install the hood sensor, reverse the removal procedure. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for (Section 8.5, “Computer Cover”).
Page 146: External Security Devices
Removal and Replacement Procedures— Desktop (DT) Chassis 8.4 External Security Devices 8.4.1 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.
Page 147: Computer Cover
3. Slide the computer cover 2 back about 1 inch (2.5 cm), then lift it off the unit. To install the computer cover, reverse the removal procedure. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for Disassembly”).
Page 148: Front Bezel
Removal and Replacement Procedures— Desktop (DT) Chassis 8.6 Front Bezel 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Pull up on the two release tabs on the left side of the bezel and push the release tab on the right side of the bezel in toward the center of the chassis 1, then rotate the front bezel away from the chassis to release it 2.
Page 149: Front Drive Bezels
Pinch the two small retaining clips 1 on the right side of the bezel blank and rotate the blank out of the front bezel 2. To install a bezel blank, reverse the removal procedure. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for (Section 8.5, “Computer Cover”).
Page 150: Diskette Drive Bezel Or Bezel Blank
Removal and Replacement Procedures— Desktop (DT) Chassis 8.7.2 Diskette Drive Bezel or Bezel Blank Press the two small retaining clips 1 on the right side of the bezel blank and the single clip on the bottom 2 towards the center of the diskette bezel and push the cover out of the front bezel 3.
Page 151: Memory Modules
5. Push the module down into the socket, ensuring that the module is fully inserted and properly seated. Make sure the latches are in the closed position 3. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Lock”).
Page 152: Expansion Cards
Removal and Replacement Procedures— Desktop (DT) 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 153 Removal and Replacement Procedures— Desktop (DT) Chassis 6. If you are installing an expansion card in a vacant socket, remove the appropriate expansion slot on the back of the chassis. Pull the slot cover straight up 1 then in toward the center of the chassis 2 to release it from the chassis frame.
Page 154 Removal and Replacement Procedures— Desktop (DT) Chassis 7. 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.
Page 155 CAUTION: After removing an expansion card, you must replace it with a new card or cover the open Ä slot (for example, with a metal slot cover or a piece of cardboard taped in place) for proper cooling of internal components during operation. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis 319865-008 8–13...
Page 156 Removal and Replacement Procedures— Desktop (DT) Chassis 11. Slide the bracket on the end of the expansion card down into the slot on the back of the chassis 1 and press the card down firmly into the socket on the system board 2.
Page 157: Drives
(such as a diskette drive, hard drive, or Zip drive). To verify the type and size of the storage device installed in the computer, run Computer Setup. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis Drive Positions Item Description 5.25-inch, half-height bay for...
Page 158: 2Removing A Drive
Removal and Replacement Procedures— Desktop (DT) Chassis 8.10.2 Removing a Drive CAUTION: To prevent loss of work and damage to the computer or drive: Ä If you are inserting or removing a hard drive, shut down the operating system properly, then turn off the computer.
Page 159 Removal and Replacement Procedures— Desktop (DT) Chassis Optical Drive Cables Diskette Drive Cables Service Reference Guide, d300, dx6050 319865-008 8–17...
Page 160 Removal and Replacement Procedures— Desktop (DT) Chassis Hard Drive Cables 7. While pressing down on the drivelock mechanism, pull the drive out of the drive bay. 8–18 319865-008 Service Reference Guide, d300, dx6050...
Page 161 Removal and Replacement Procedures— Desktop (DT) Chassis 8. Remove the four guide screws (two on each side) from the old drive. You will need these screws to install a new drive. 9. Store the removed drive in anti-static packaging. Service Reference Guide, d300, dx6050 319865-008 8–19...
Page 162: 3Optical Drive
5. Install four guide screws in the lower holes on each side of the drive. Extra guide screws are provided on the chassis basepan, under the front bezel. Hard drives use #6-32 standard screws. All other drives use M3 metric screws. The HP-supplied metric screws are black. The HP-supplied standard screws are silver.
Page 163 11. If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.6, “Front Bezel”). (Section 8.5, “Computer Cover”).
Page 164: 4Hard Drive
Removal and Replacement Procedures— Desktop (DT) Chassis 8.10.4 Hard Drive 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 8.2, “Unlocking the Smart Cover 2. Prepare the computer for disassembly 3. Remove the computer cover 4.
Page 165 Extra guide screws are provided on the chassis basepan, under the front bezel. Hard drives use #6-32 standard screws. All other drives use M3 metric screws. The HP-supplied metric screws are black. The HP-supplied standard screws are silver. 7. Insert the hard drive into the bay from the front of the chassis. Push it in until it locks into place.
Page 166: Front I/O Devices
Removal and Replacement Procedures— Desktop (DT) Chassis 8.11 Front I/O Devices 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Disconnect the two I/O device cables from the system board: the front USB cable pair and the front audio cable.
Page 167: Power Switch Assembly
5. Squeeze the switch holder retaining clips together at the front of the chassis 1 and push the switch assembly out of the chassis 2. To install the power switch assembly, reverse the removal procedure. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for (Section 8.5, “Computer Cover”).
Page 168: System Board
Removal and Replacement Procedures— Desktop (DT) Chassis 8.13 System Board 1. Prepare the computer for disassembly 2. Remove the computer cover 3. Remove all PCI expansion boards 4. Remove the AGP graphics card 5. Disconnect all cables connected to the system board, noting their location for reinstallation.
Page 169: 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 170: 1Type 1 Battery Holder
Removal and Replacement Procedures— Desktop (DT) Chassis 8.14.1 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.
Page 171: 2Type 2 Battery Holder
4. Plug in the computer and turn on power to the computer. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis 319865-008 8–29...
Page 172: Type 1
Removal and Replacement Procedures— Desktop (DT) Chassis 8.15 Processor and Heatsink There are three different heatsinks that may be used on this model of computer. While the components differ from unit to unit, they all require similar steps. 1. Prepare the computer for disassembly 2.
Page 173: Type 2
4. Install the heatsink and latch it in place. 5. Connect the heatsink fan control to the system board. 6. Replace the access panel and reconnect the computer. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis 319865-008 8–31...
Page 174: Type 3
Removal and Replacement Procedures— Desktop (DT) Chassis 8.15.3 Type 3 1. Release the tension from the heatsink 1. 2. Remove the retaining clips 2. 3. Remove the heatsink from atop the processor 3. 4. Open the ZIF socket lever 4.
Page 175: Speaker
4. Remove the four screws that secure the speaker to the chassis. 5. Remove the speaker. To install the speaker, reverse the removal procedures. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for (Section 8.5, “Computer Cover”).
Page 176: Chassis Fan
Removal and Replacement Procedures— Desktop (DT) Chassis 8.17 Chassis Fan 1. Prepare the computer for disassembly 2. Remove the computer cover 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 177: Power Supply
5. Slide the power supply toward the front of the computer, then lift it out of the computer 2. To install the power supply, reverse the removal procedure. Service Reference Guide, d300, dx6050 Removal and Replacement Procedures— Desktop (DT) Chassis (Section 8.1, “Preparation for (Section 8.5, “Computer Cover”).
Page 178 Removal and Replacement Procedures— Desktop (DT) Chassis 8–36 319865-008 Service Reference Guide, d300, dx6050...
Page 179: 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 Mouse Connector and Icon Ethernet BNC Connector and Icon Service Reference Guide, d300, dx6050 Connector Pin Assignments Signal Data...
Page 180: Ethernet Aui
Connector Pin Assignments Ethernet RJ-45 Connector and Icon Ethernet AUI Signal Ground Negative AUI Differential Collision Positive AUI Differential Collision Negative AUI Differential Transmit Positive AUI Differential Transmit Ground Ground Negative AUI Differential Receive A–2 Signal (+) Transmit Data (-) Transmit Data (+) Receive Data Unused Unused...
Page 181: Parallel Interface
Parallel Interface Signal Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Serial Interface, Powered and Non-Powered Connector and Icon Connector and Icon Microphone Connector and Icon (1/8" miniphone) 1 2 3 1 2 3 Service Reference Guide, d300, dx6050 Connector and Icon Signal...
Page 182 Connector Pin Assignments Headphone Connector and Icon (1/8" miniphone) 1 2 3 Line-In Audio Connector and Icon (1/8" miniphone) 1 2 3 Line-Out Audio Connector and Icon (1/8" miniphone) 1 2 3 SCSI Low Voltage Differential/Single Ended (LVD/SE) Signal 1-16 Ground 17-18 TERMPWR...
Page 183: External Infrared Transceiver
Ultra SCSI Signal 1-11 Ground Reserved Open Reserved 15-25 Ground External Infrared Transceiver Signal Transmit Receive Ground Monitor Signal Red Analog Green Analog Blue Analog Not used Ground Service Reference Guide, d300, dx6050 Connector and Icon Signal Signal Reserved TERMPWR Reserved Ground ATN #...
Page 184 Connector Pin Assignments ATA/ATAPI (IDE) Standard Drive Cable Signal Reset Ground DD10 DD11 DD12 DD13 MultiBay CD-ROM Adapter Signal RESDRV_ GROUND A–6 Connector Signal DD14 DD15 Ground (Key) DMARQ Ground DIOW Ground DIOR Ground IORDY CSEL Connector Signal Signal GROUND (key) CS1FX CS3FX...
Page 185 Accelerated Graphics Port (AGP) Signal A Signal B +12 V OVRCNT# TYPEDET# + 5V Reserved + 5V USB- USB+ Ground Ground INTA# INTB# RST# GNT# REQ# VCC3.3 VCC3.3 Reserved PIPE# RBF# Ground Ground WBF# Reserved SBA1 SBA0 VCC 3.3 VCC 3.3 SBA3 SBA2 SB_STB#...
Page 186: Pin Power
Connector Pin Assignments 20-Pin Power Signal +3.3 V +3.3 V +5 V *Open for d300 series computers; -5V for all others 4-Pin Power (for CPU) Connector and Icon SATA Data and Power Signal Ground V 3.3 Ground V 12 *S = Data, P = Power A–8 Connector Signal...
Page 187: General Requirements
Power cord sets for use in other countries must meet the requirements of the country where you use the computer. For more information on power cord set requirements, contact your authorized HP dealer, reseller, or service provider. General Requirements The requirements listed below are applicable to all countries: 1.
Page 188 Power Cord Set Requirements Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Australia (1) Austria (1) Belgium (1) Canada (2) Denmark (1) Finland (1) France (1) Germany (1) 1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 1.0 mm Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation in the country where it will be used.
Page 189: Post Error Messages
An error message results if the Power-On Self-Test (POST) encounters a problem. This test runs when the system is turned on, checking assemblies within the computer and reporting any errors found. Not all computers use all of the codes listed. POST Error Messages Screen Message 101-Option ROM Error...
Page 190 Windows utilities. 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. System board jumper Reset system board jumpers to match improperly set. processor and bus speeds (select models).
Page 191 POST Error Messages Screen Message 214-DIMM Configuration Warning 301-Keyboard Error 303-Keyboard Controller Error 304-Keyboard or System Unit Error 401-Parallel Port 1 Address Assignment Conflict 402-Parallel Port 2 Address Assignment Conflict 403-Parallel Port 3 Address Assignment Conflict 404-Parallel Port Address Conflict Detected 410-Audio Interrupt Conflict...
Page 192 POST Error Messages POST Error Messages Screen Message 501-Display Adapter Failure 510-Splash Screen image corrupted 511-CPU, CPUA, or CPUB Fan not detected 512-Chassis, rear chassis, or front chassis fan not detected 514-CPU or Chassis Fan not detected. 520-Single Monitor Configuration warning 601-Diskette Controller Error 602-Diskette Boot...
Page 193 POST Error Messages Screen Message 660-Display Cache is Detected Unreliable 912-Computer Cover Has Been Removed Since Last System Start 914-Hood Lock Coil is not Connected 917-Expansion Riser not Detected 919-Front Panel, MultiPort, and/or MultiBay Risers not Detected. 1151-Serial Port 1 Address Conflict Detected 1152-Serial Port 2...
Page 194 System text if applicable. that will fix an erroneous Apply firmware patch if applicable. (see error message.) www.hp.com/support) Back up contents and replace hard drive. Devices attached to the If you do not require access to SATA Primary IDE (Parallel ATA)
Page 195 Run Computer Setup. If Setup already has become corrupted. has data in the field or will not allow the serial number to be entered, download from www.hp.com (SNZERO.EXE). Run Computer Setup and try to enter serial number under Security, System ID, then save changes.
Page 196 POST Error Messages C–8 319865-008 Service Reference Guide, d300, dx6050...
Page 197: 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)? Is the computer turned on? Is the green power light illuminated? Is the monitor turned on?
Page 198: Solving Minor Problems
Troubleshooting Without Diagnostics Solving Minor Problems Solving Minor Problems Problem Computer appears locked up and will not turn off when the power button is pressed. Computer will not respond to USB keyboard or mouse. Ä CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds.
Page 199 Solving Minor Problems (Continued) Problem Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause. System does not power on and the LEDs on the front of the computer are not flashing.
Page 200: Solving Power Supply Problems
Troubleshooting Without Diagnostics Solving Power Supply Problems Solving Power Supply Problems Problem Power supply shuts down intermittently. Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause. Power LED flashes Red, once every two seconds.
Page 201: Solving Diskette Problems
Solving Diskette Problems Solving Diskette Problems Problem Diskette drive light stays on. Drive not found. Diskette drive cannot write to a diskette. Service Reference Guide, d300, dx6050 Cause Solution Diskette is damaged. In Microsoft Windows 2000 and Microsoft Windows XP, right-click Start, click Explore, and select a drive.
Page 202 Troubleshooting Without Diagnostics Solving Diskette Problems (Continued) Problem Cannot format diskette. A problem has occurred with a disk transaction. Diskette drive cannot read a diskette. “Invalid system disk” message is displayed. Cannot Boot to Diskette. D–6 Cause Solution Invalid media reported. When formatting a disk in MS-DOS, you may need to specify diskette capacity.
Page 203: Solving Hard Drive Problems
Solving Hard Drive Problems Solving Hard Drive Problems Problem Hard drive error occurs. Disk transaction problem. Drive not found (identified). Nonsystem disk/NTLDR missing message. Service Reference Guide, d300, dx6050 Cause Solution Hard disk has bad Use a utility to locate and block sectors or has failed.
Page 204 Troubleshooting Without Diagnostics Solving Hard Drive Problems (Continued) Problem Nonsystem disk/NTLDR missing message. (continued) Second Ultra ATA hard drive does not perform optimally. Computer will not start. Computer seems to be locked up. D–8 Cause Solution System is trying to start 1.
Page 205: Solving Display Problems
Solving Display Problems Solving Display Problems Problem Blank screen (no video). CAUTION: When attempting to resume from standby mode, do not hold down the Ä power button for more than four seconds. Otherwise, the computer will shut down and you will lose your data. Service Reference Guide, d300, dx6050 Cause Solution...
Page 206 Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. Monitor does not function properly when used with energy saver features. Dim characters.
Page 207 Solving Display Problems (Continued) Problem High pitched noise coming from inside a flat panel monitor. Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen. (flat panel monitors using an analog VGA input connection only) Certain typed symbols do...
Page 208: Solving Audio Problems
Troubleshooting Without Diagnostics Solving Audio Problems Solving Audio Problems Problem Sound does not come out of the speaker or headphones. CAUTION: When attempting to resume from standby mode, do not hold down the Ä power button for more than four seconds. Otherwise, the computer will shut down and you will lose your data.
Page 209 Solving Audio Problems (Continued) Problem Noise or no sound comes out of the speakers or headphones. If you set digital as the Output Mode, the internal speaker and external analog speakers will no longer output audio until you switch back to an auto-sense or analog mode.
Page 210: Solving Printer Problems
Troubleshooting Without Diagnostics Solving Printer Problems Solving Printer Problems Problem Printer will not print. Printer will not turn on. Printer prints garbled information. Printer is offline. D–14 Cause Solution Printer is not turned on Turn the printer on and make sure it and online.
Page 211: Solving Keyboard And Mouse Problems
Solving Keyboard and Mouse Problems Solving Keyboard Problems Problem Keyboard commands and typing are not recognized by the computer. CAUTION: When attempting to resume from standby mode, do not hold down the Ä power button for more than four seconds. Otherwise, the computer will shut down and you will lose your data.
Page 212: 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 2000 and 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 213 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Video card is not seated For systems with a graphics card: properly or is bad, or 1.
Page 214: Solving Network Problems
Troubleshooting Without Diagnostics Solving Network Problems These guidelines do not discuss the process of debugging the network cabling. Solving Network Problems Problem Wake-on-LAN feature is not functioning. Network driver does not detect network controller. Network status link light does not turn on or it never flashes.
Page 215 Solving Network Problems (Continued) Problem Diagnostics passes, but the computer does not communicate with the network. (continued) Network controller stopped working when an expansion board was added to the computer. Network controller stops working without apparent cause. New network card will not boot.
Page 216: 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 System will not boot or...
Page 217: Solving Processor Problems
Solving Processor Problems Solving Processor Problems Problem Poor performance is experienced. Power LED is Red and stays on. Service Reference Guide, d300, dx6050 Cause Solution Processor is hot. 1. Make sure the airflow to the computer is not blocked. 2. Make sure the fans are connected and working properly (some fans only operate when needed).
Page 218 Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems Problem System will not boot from CD-ROM or DVD drive. CD-ROM or DVD devices are not detected or driver is not loaded. Movie will not play in the DVD drive.
Page 219: Solving Drive Key Problems
Solving CD-ROM and DVD Problems (Continued) Problem Recording audio CDs is difficult or impossible. Solving Drive Key Problems Solving Drive Key Problems Problem Drive key is not seen as a drive letter in Windows XP. The computer boots to DOS after making a bootable Drive key.
Page 220 Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Unable to connect to the Internet. (continued) Cannot automatically launch Internet programs. D–24 Cause Solution Cable/DSL service is Try connecting to the Internet at a 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 221 Solving Internet Access Problems (Continued) Problem Internet takes too long to download Web sites. Service Reference Guide, d300, dx6050 Cause Solution Modem is not set up Verify that the correct modem speed properly. and COM port are selected. For Windows 2000 1.
Page 222 Troubleshooting Without Diagnostics D–26 319865-008 Service Reference Guide, d300, dx6050...
Page 223 AMD-Based Systems Computers equipped with AMD-based processors come with Double Data Rate-Synchronous Dynamic Random Access Memory (DDR-SDRAM) Dual Inline Memory Modules (DIMMs). The memory sockets on the system board can be populated with industry-standard DIMMs. These memory module slots are populated with at least one pre installed memory module. To achieve the maximum memory support, you may be required to replace the pre installed DIMM with a higher capacity DIMM.
Page 224: Dimm Sockets
Memory The following processor bus frequencies are required for the system to run at the supported memory frequencies. Memory Frequency 266 MHz 333 MHz 400 MHz If a memory frequency is paired with an unsupported processor bus frequency, the system will run at the highest supported memory speed.
Page 225 The system will automatically operate in single channel mode or a higher-performing dual channel mode, depending on how the DIMMs are installed. In single channel mode, the maximum operational speed is determined by the slowest DIMM in the system. For example, if the system is populated with a DIMM that is 266 MHz and a second DIMM that is 333 MHz, the system will run at the slower of the two speeds.
Page 226 Memory E–4 319865-008 Service Reference Guide, d300, dx6050...
Page 227 System Board and Riser Board Reference These reference designators are used on most but not all HP system and riser boards. Designator CR11 CR34 CR35 J10 - 19 J20 - 29 J31 - J35 Service Reference Guide, d300, dx6050 Component Battery socket/Battery LED - 3.3V Aux...
Page 228 System Board and Riser Board Reference Designators Designator Component (Continued) Double-stacked mouse/keyboard connector Bottom Keyboard Video connector Primary single USB connector Secondary single USB jack Microphone jack Line-in jack Line-out jack Headphone jack Volume control Double-stacked headphone/microphone connector Top Microphone Bottom Headphone Double-stacked line-in/line-out connector Top Line in...
Page 229 Designator Component (Continued) Slimline CD-ROM connector Header for front audio panel Header for front panel USB P25 - P26 Video memory upgrade connector MultiBay header SCSI LED connector Primary serial ATA (SATA) port Secondary serial ATA (SATA) port Serial debug header Serial port header First serial port Second serial port...
Page 230 System Board and Riser Board Reference Designators F–4 319865-008 Service Reference Guide, d300, dx6050...
Page 231 4-pin power pin assignments A–8 20-pin power pin assignments A–8 3.5" drive bezel, µT removal and replacement 6–8 5.25" drive bezel, µT removal and replacement 6–7 access panel, µT removal and replacement 6–4 access to computer, controlling 3–8 advanced, Computer Setup heading 2–10 AGP card DT removal and replacement 8–13 µT removal and replacement 6–13...
Page 232 Index controlling access to computer 3–8 country-specific power cord set requirements B–2 Cover Lock, Smart 3–16 customizing software 3–1 date and time display D–2 deleting password 3–13 delimiter characters, table 3–14 deployment tools, software 3–1 device drivers, installing/upgrading 1–1 diagnostic tool for hard drives 3–20 Diagnostics for Windows categories 2–14 detecting 2–13...
Page 233 µT removal and replacement 6–26 ST removal and replacement 7–31 hood sensor DT removal and replacement 8–3 ST removal and replacement 7–4 HP Client Manager 3–2 HP software. See software IDE drive cable pin assignments A–6 infrared (IR) transceiver, external, pin assignments A–5 initial configuration 3–1...
Page 234 Index ST removal and replacement 7–11 menu bar, Diagnostics for Windows 2–15 microphone pin assignments A–3 µT 3.5" drive bezel removal and replacement 6–8 5.25" drive bezel removal and replacement 6–7 access panel removal and replacement 6–4 AGP card removal and replacement 6–13 battery removal and replacement 6–29 cable lock 6–3 chassis fan removal and replacement 6–21...
Page 235 power supply DT removal and replacement 8–35 fan 5–7 µT removal and replacement 6–34 ST removal and replacement 7–35 power supply, surge-tolerant 3–20 power switch assembly DT removal and replacement 8–25 µT removal and replacement 6–24 ST removal and replacement 7–25 power-on password 2–1 changing 3–13 deleting 3–13...
Page 236 Index ST expansion slot cover 7–12 ST external 3.5-inch drive 7–20 ST front bezel 7–9 ST front drive bezel 7–10 ST front I/O devices 7–24 ST heatsink 7–31 7–32 ST memory 7–11 ST optical drive 7–17 ST padlock 7–7 ST PCI expansion card 7–12 ST power supply 7–35 ST power switch assembly 7–25 ST primary hard drive 7–22...
Page 237 URLs (Web sites). See Web sites USB pin assignments A–3 Wake-on-LAN feature D–18 warnings, battery 5–8 Web sites Fingerprint Identification Technology 3–19 HP Client Manager Software 3–2 HPQ Flash 3–4 PC Deployment 3–1 Remote ROM Flash 3–4 ROM Flash 3–4 ROMPaq images 3–4 support software 3–7...
Page 238 Index Index–8 319865-008 Service Reference Guide, d300, dx6050...

This manual is also suitable for:

Evo d300 D325 - microtower desktop pc Dx6050 - microtower Compaq d300 series Compaq dx6050 series

HP Compaq dx6050 MT Reference Manual

1 Installing the Operating System

2 Setup Utilities and Diagnostics Features

3 Desktop Management

4 Serial and Parallel ATA Drive Guidelines and Features

5 Identifying the Chassis, Routine Care, and Disassembly Preparation

6 Removal and Replacement Procedures-Microtower (Μt) Chassis

7 Removal and Replacement Procedures-Slim Tower (ST) Chassis

8 Removal and Replacement Procedures-Desktop (DT) Chassis

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Summary of Contents for HP Compaq dx6050 MT