HP Dc5750 HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition
HP Dc5750 - Compaq Business Desktop Manual
 |
UPC - 883585056446
View all HP Dc5750 manuals
Add to My Manuals
Save this manual to your list of manuals |
HP Dc5750 manual content summary:
- HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 1
service reference guide HP Compaq dc5750 Buxsiness PC 1st Edition This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, SATA drives, safety, routine care, connector pin assignments, POST error - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 2
- HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 3
Service Reference Guide HP Compaq dc5750 Business PC 1st Edition Document Part Number: 437963-001 November 2006 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 4
subject to change without notice. Microsoft, MS-DOS, Windows, Windows NT, and Windows XP are trademarks of Microsoft Corporation in the U.S. and other equipment or loss of information. Service Reference Guide HP Compaq dc5750 Business PC First Edition (November 2006) Document Part Number: 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 5
or Upgrading Device Drivers 1-1 1.2 Transferring Files and Settings 1-2 1.3 Creating a Disc Recovery Set 1-2 2 Setup Utilities and Diagnostics Features 2.1 Power-On Self-Test (POST 2-1 2.2 Computer Setup Utilities 2-2 2.2.1 Using Computer Setup (F10) Utilities 2-3 2.2.2 Computer Setup - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 6
Care 5-5 5.4.1 General Cleaning Safety Precautions 5-5 5.4.2 Cleaning the Computer Case 5-6 5.4.3 Cleaning the Keyboard 5-6 5.4.4 Cleaning the Monitor 5-7 5.4.5 Cleaning the Mouse 5-7 5.5 Service Considerations 5-7 5.5.1 Power Supply Fan 5-7 iv 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 7
6-29 6.15Speaker 6-31 6.16Power Supply 6-32 6.17System Board 6-33 6.18Battery 6-34 6.18.1Type 1 Battery Holder 6-35 6.18.2Type 2 Battery Holder 6-36 6.18.3Type 3 Battery Holder 6-37 7 Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.1 Preparation for Disassembly - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 8
19.2Type 2 Battery Holder 7-34 7.19.3Type 3 Battery Holder 7-35 A Connector Pin Assignments B Power Cord Set Requirements C POST Error Messages D Troubleshooting Without Diagnostics E System Board and Riser Board Reference Designators F Memory Index vi 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 9
on how to purchase a support software CD subscription: http://h18000.www1.hp.com/support/files/desktops/us/purchase.html. ✎ If the computer has a writable optical drive, install the appropriate application to be able to write to the drive. Service Reference Guide, dc5750 437963-001 1-1 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 10
and Recovery Manager Manual. If Create factory software recovery CDs or DVDs to recover the system is unavailable on the system, the HP Restore Plus CD set can be obtained through product support on http://welcome/country/us/en/contact_us.html. 1-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 11
the system is turned on. POST checks the following items to ensure that the computer system is functioning properly: ■ Keyboard ■ Memory modules ■ All mass storage devices ■ Processors ■ Controllers ✎ If the Power-On Password is set, a key icon appears on the screen while POST is running. You will - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 12
setup by saving system configuration information on diskette and restoring it on one or more computers. ■ Execute self-tests on a specified ATA hard drive (when supported by drive). ■ Enable or disable DriveLock security (when supported by drive). 2-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 13
factory system defaults. Ä CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the F10 Computer Setup changes because the CMOS could become corrupted. It is safe to turn off all power to the computer only after exiting the F10 Setup screen. Service Reference Guide, dc5750 437963 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 14
without applying or saving any changes. Save Changes and Saves changes to system configuration or default settings and exits Exit Computer Setup. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 15
all installed BIOS-controlled storage devices. drive). Hard disk None (prevents BIOS data accesses and disables it as a boot device) Hard disk (treated as hard drive) ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 16
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. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-6 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 17
Drive Protection System (DPS) self-tests. ✎ This selection will only appear when at least one drive capable of performing the DPS self-tests is attached to the system. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 18
/Disable Setup Browse Mode (appears if a setup password is set) (allows viewing, but not changing, the F10 Setup Options without entering setup password) ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 19
feature is supported on some models only. Device Security Enables/disables serial ports, parallel port, all USB ports, front USB ports, system audio, network controllers (some models), and embedded security device (some models). Network Service Boot Enables/disables the computer's ability to - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 20
supported) and S3 use 1 blink per second. Hardware Power Management SATA power management enables or disables SATA bus and/or device power management. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-10 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 21
fan speed. The fans are still automatically controlled. Advanced* *For advanced users only Power-On Options Allows you to set: • POST Computer (F10) Setup. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc5750 437963- - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 22
"boot" or primary VGA controller. ✎ In order to see this entry, you must enable integrated video (Advanced > Device Options) and Save Changes and Exit. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-12 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 23
• Internal speaker (some models) (does not affect external speakers) • Monitor Tracking (enable/disable). Allows BIOS to save monitor asset information. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc5750 437963-001 2-13 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 24
F10 option will allow users to disable the downloading of this embedded NIC option ROM thus giving more DCH space for additional PCI cards which may need option ROM space. The default will be to have the NIC option ROM enabled. ✎ Support for specific Computer Setup options may vary depending on the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 25
-Shows HP Insight Diagnostic version, computer configuration memory (CMOS) information, and system management BIOS data. Storage-Shows information about storage media connected to the computer. This list includes all fixed disks, diskette drives, and optical drives. Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 26
the computer model, processor, chassis, and BIOS, plus internal speaker and PCI bus from: ■ Interactive Mode-Provides maximum control over the testing process. The test. The Status tab, which allows you to monitor the progress of the test, is automatically displayed Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 27
that should help solve the problem. To find an error code description quickly, enter the code in the box at the top of the tab and click the Find Error Codes button. The Test Components tab displays low level information on tests that are run. Service Reference Guide, dc5750 437963-001 2-17 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 28
2.0 HP Drive Key (capacity must be 64MB or higher). USB 1.0 Drive Keys are not supported. HP Insight Diagnostics Offline Edition. 8. Select the proper language and click Download. ✎ The download includes instructions on how to create the bootable CD. 2-18 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 29
installation ■ Software updating and management ■ ROM flash ■ Asset tracking and security ■ Fault notification and recovery ✎ Support for specific features described in this guide may vary by model or software version. 3.1 Initial Configuration and Deployment HP computers come with a preinstalled - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 30
CDs or DVDs to recover the system. 3. Follow the instructions in the wizard. In addition to allowing you to create the Restore Plus! CD set, HP Backup and Recovery Manager can be used to back up data and system files to the hard drive, to network drives, or to removable media, such as CDs, DVDs, or - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 31
. 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. 3.3 Software Updating and Management HP provides several tools for managing and updating software on desktops, workstations, and - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 32
drivers and BIOS updates without visiting each PC ■ Remotely configure BIOS and security settings ■ Automate processes to quickly resolve hardware problems Tight integration with HP Instant Support tools reduces hardware troubleshooting time. ■ Diagnostics-remotely run & view reports on HP desktop - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 33
http://www.hp.com/go/easydeploy. 3.3.6 HP Client Foundation Suite The HP Client Foundation Suite (HP CFS) is designed for organizations wanting essential client management functionality. It combines: ■ HP Client Manager ■ HP Systems Insight Manager Connector Service Reference Guide, dc5750 437963 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 34
■ Integrated hardware management ❏ Remote control ❏ HP alert monitoring ❏ HP hardware driver and BIOS updates ❏ Integration with HP ProtectTools ❏ Free add-on support for Intel Active Management Technology (AMT) ❏ Free version for basic hardware management of HP desktops and notebooks, and software - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 35
of the computer. Should you need or want to upgrade the BIOS, you may download the latest BIOS images from the HP driver and support page: http:\\h18000.www1.hp.com/support/files. CAUTION: For maximum ROM protection, be sure to establish a setup password. The setup password prevents unauthorized - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 36
computer must be powered on, or turned on through Remote Wakeup, to take advantage of Remote ROM Flash. For more information on Remote ROM Flash, refer to the HP Client Manager or System Software Manager at http://h18000.www1.hp.com/im/prodinfo.html. 3-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 37
FAT12, FAT16, or FAT32 file system. 3. Turn on the computer. If the system successfully reprograms the ROM, the system will automatically power off. 4. Remove the removable media used to upgrade the BIOS. 5. Turn the power on to restart the computer. Service Reference Guide, dc5750 437963-001 3-9 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 38
to enter Computer Setup. Press Enter to bypass the title screen, if necessary. 10. Select File > Replicated Setup > Restore from Removable Media, and follow the instructions on the screen. 11. Restart the computer when the configuration is complete. 3-10 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 39
media device. 8. Download a BIOS utility for replicating setup (repset.exe) and copy it onto the configuration diskette or USB flash media device. To obtain this utility, go to http://www.hp.com, click Software and Driver Downloads, and enter the model number of the computer. 9. On the configuration - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 40
that is bootable from a USB flash media device. Ä CAUTION: Some older PCs may not be bootable from a USB flash media device. If the default boot order in the Computer Setup (F10) Utility lists the USB device before the hard drive, the computer can be booted from a USB flash media device. Otherwise - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 41
must be used. 1. If there are any PCI cards in the system that have SCSI, ATA RAID, or SATA drives attached, turn off the computer and unplug the power cord. Ä CAUTION: The power cord MUST be unplugged. 2. Open the computer and remove the PCI cards. 3. Insert the USB flash media device into one - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 42
media device as drive C. ✎ The default boot order varies from computer to computer, and it can be changed in the Computer Setup (F10) Utility. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for instructions. If you have used a DOS version from Windows 9x, you - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 43
latest support software easier. You can download the software from http://www.hp.com/support. The Web site contains the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on the HP computer. 3.4.7 Industry Standards HP management - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 44
HP computer: ■ Locally, using the Computer Setup Utilities. See the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD included with the computer for additional information and instructions on using the Computer Setup Utilities. Some computers also have HP BIOS Configuration - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 45
at least one drive that supports ATA Security is attached to the system. ✎ 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. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 46
must restart the computer and again press F10 when the monitor light turns green to access the utility. 3. Select Security, then select Setup Password and follow the instructions on the screen. 4. Before exiting, Select File > Save Changes and Exit. 3-18 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 47
do not press F10 at the appropriate time, you must restart the computer and again press F10 when the monitor light turns green to access the utility. 3. Select Security, then Power-On Password and follow the instructions on the screen. 4. Before exiting, select File > Save Changes and Exit. Entering - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 48
Desktop Management Changing a Power-On or Setup Password If the system is equipped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. 2. To change the Power - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 49
, 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 Manager Guide at www.hp.com. 3.5.4 DriveLock DriveLock - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 50
been designed to protect. Access to Computer Setup and DriveLock can be restricted through the Setup password. By specifying a Setup password and not giving it to end users, system administrators are able to restrict users from enabling DriveLock. 3-22 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 51
unlocked position. Ä CAUTION: For maximum cover lock security, be sure to establish a setup password. The setup password prevents unauthorized access to the Computer Setup utility. ✎ The Smart Cover Lock is available as an option on some systems. Service Reference Guide, dc5750 437963-001 3-23 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 52
3.5.6 Cable Lock Provision The rear panel of the computer accommodates a cable lock so that the computer can be physically secured to a work area. For illustrated instructions, please see the Removal and Replacement chapter for the specific chassis. 3-24 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 53
service provider can use this information to help diagnose conditions that caused you to run the DPS software. Refer to the Troubleshooting Guide for instructions on using DPS. 3.6.2 Surge-Tolerant Power Supply An integrated surge-tolerant power supply provides greater reliability when the computer - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 54
Desktop Management 3-26 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 55
drives on these models of computer. No PATA drives are supported on these models. 4.1 SATA Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length Data interface voltage differential Drive voltages Jumpers - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 56
V power P3 V3.3 3.3 V power P4 Ground P5 Ground P6 Ground P7 V5 5 V power P8 V5 5 V power Pin Usage Notes P9 V5 5 V power P10 Ground P11 Ground P12 Ground P13 V 12 12 V power P14 V12 12 V power P15 V12 12 V power 4-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 57
10 while calculations by Microsoft are bytes to the base 2. Drive/Partition Capacity Limits File System FAT 32 NTFS Controller Type ATA ATA Operating System Windows 2000/ XP Windows NT/2000/XP Maximum Size Partition 32 GB 2 TB Drive 2 TB 2 TB Service Reference Guide, dc5750 437963-001 4-3 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 58
Serial and Parallel ATA Drive Guidelines and Features 4-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 59
an AC power source, voltage is always applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. 5.1 Chassis Designations 5.1.1 Small Form Factor (SFF) Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 60
Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1.2 Microtower (MT) 5-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 61
many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. 5.2.1 -sensitive parts from assemblies in protective packaging or conductive foam. Service Reference Guide, dc5750 437963-001 5-3 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 62
to equipment: ■ Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords assemblies by the case or PCB laminate. Handle them only at static-free work areas. ■ Turn off power and input Field service kits 5-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 63
material. ■ Install or enable power management functions of the operating system or other software, including sleep states. 5.4 Routine Care 5.4.1 General Cleaning Safety Precautions 1. Never use solvents or flammable solutions to clean the computer. Service Reference Guide, dc5750 437963-001 5-5 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 64
for proper key functions. Use tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly. 5-6 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 65
from the power source before opening the computer to prevent system board or component damage. 5.5.2 Tools and Software Requirements To service the computer, you need the following: ■ Torx T-15 screwdriver (HP screwdriver with bits, PN 161946-001) ■ Torx T-15 screwdriver with small diameter shank - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 66
, refer to Section 5.2, "Electrostatic Discharge Information." ■ Do not use excessive force when inserting a drive. ■ Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers. 5-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 67
Battery The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of about three years. See the appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures. Å WARNING: This - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 68
Identifying the Chassis, Routine Care, and Disassembly Preparation 5-10 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 69
each cable as you remove it, noting its position and routing. Keep all screws with the units removed. Ä 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, dc5750 437963-001 6-1 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 70
6.2 External Security Devices 6.2.1 Installing a Cable Lock The cable lock may be used to secure the computer access panel to the chassis and, at the same time, secure the computer to a fixed object. Insert the cable lock in the location shown below. 6-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 71
and Replacement Procedures- Microtower (MT) Chassis 6.2.2 Installing a Padlock A padlock may be used by itself to secure the access panel to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. I Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 72
2 back about 1.3 cm (1/2 inch), then lift it off the unit. ✎ You may want to lay the computer on its side to install internal parts. Be sure the side with the access panel is facing up. To install the access panel, reverse the removal procedure. 6-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 73
Removal and Replacement Procedures- Microtower (MT) Chassis 6.4 Front Bezel 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel (Section 6.3). 3. To remove the away from the chassis 2 to release the top of the bezel. Service Reference Guide, dc5750 437963-001 6-5 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 74
Removal and Replacement Procedures- Microtower (MT) Chassis To reinstall the front bezel: 1. Position the chassis in the upright position. 2. Insert the two hooks the bezel onto the chassis 2 so that the bottom two hooks on the bezel snap into place. 6-6 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 75
and Replacement Procedures- Microtower (MT) Chassis 6.5 Front Drive Bezels Follow these steps before removing or installing a front drive bezel. 1. Prepare the computer for disassembly ( To install a bezel blank, reverse the removal procedure. Service Reference Guide, dc5750 437963-001 6-7 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 76
it straight up 2. Ä CAUTION: Always pull the connector - NEVER pull on the cable. Pulling on the cable could damage the cable and result in a failed power supply. 6-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 77
Procedures- Microtower (MT) Chassis 6.6.1 Cable Connections System board connectors are color-coded to make it easier to find the proper connection. Cable To Cable Designator Power Supply System board P1 Power Supply CPU power P3 Power Supply 2nd SATA Hard drive P4 Power Supply 1st - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 78
module with the tab on the memory socket. It may be easier to install a memory module in some cases if the main power cable from the power supply to the system board is temporarily disconnected. The computer automatically recognizes the additional memory when the computer is turned on. 4. Push the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 79
rear of the computer, a sliding slot cover lock secures the expansion card brackets and expansion slot covers in place. Remove the captive thumbscrew that holds the slot cover lock in place 1 and slide the slot cover lock up and off the chassis 2. Service Reference Guide, dc5750 437963-001 6-11 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 80
forth until the connectors pull free from the socket. Pull the expansion card straight up from the socket 1 then away from the inside of the chassis 2 to release it from the chassis frame. Be sure not to scrape the card against the other components. 6-12 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 81
opened slot and slide the slot cover lock down to secure the slot cover in place. Ä CAUTION: After removing an expansion card, you must replace it with a new card or expansion slot cover for proper cooling of internal components during operation. Service Reference Guide, dc5750 437963-001 6-13 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 82
expansion card brackets and slot covers 1 to secure them in place and replace the thumbscrew 2 that secures the slot cover lock. 10. Connect external cables to the installed card, if needed. Connect internal cables to the system board, if needed. 6-14 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 83
- Microtower (MT) Chassis 6.9 Drives The computer supports up to five 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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 84
(Section 6.4). 5. Disconnect the power and data cables from the back of the drive, as shown in the following illustrations. Disconnecting Optical Drive Cables ✎ Some products use straight cable connectors while others use right angle connectors. 6-16 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 85
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. 7. Remove the four guide screws (two on each side) from the old drive. You will need these screws to install a new drive. Service Reference Guide, dc5750 437963-001 6-17 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 86
temperature extremes, or products that have magnetic fields such as monitors or speakers. ✎ An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD+R/RW, or CD-RW/DVD Combo drive. The system does not support Parallel ATA (PATA) optical drives. 1. Install four guide screws (two on each side) into the new - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 87
Removal and Replacement Procedures- Microtower (MT) Chassis 2. Slide the drive into the drive bay, making sure to align the guide sctrews with the guide slots, until the drive snaps into place. 3. Reconnect the power and data cables to the drive as shown in the following illustrations. ✎ Refer to - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 88
, such as a compact disc or diskette, from the drive. 2. Prepare the computer for disassembly (Section 6.1). 3. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Section 6.3). 6-20 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 89
(Section 6.4). 5. Disconnect the power 1 and data 2 cables from the back of the drive. 6. Remove the power cable 1 and primary data cable 2 and secondary data cable (if necessary) 3 from the cable retainers to make it easier to access the drive. Service Reference Guide, dc5750 437963-001 6-21 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 90
threads and four have M3 metric threads. Standard screws are used for hard drives and have a silver finish. Metric screws are used for all other drives and have a black finish. Make sure to install the appropriate guide screws into the drive. 6-22 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 91
a primary hard drive, use the power connector labeled P5. If you are installing a secondary hard drive use the power cable labeled P4. 12. If installing a new drive, connect the oppposite end of the data cable to the appropriate system board connector. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 92
replaced the primary hard drivem use the Restore Plus! CD set that was created when starting the computer for the first time. When the restore process has completed, reinstall any personal files that were backed up before replacing the hard drive. 6-24 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 93
the power cable that connects the chassis fan to the system board 1. 4. Remove the four screws from the exterior rear of the chassis that secure the fan 2. 5. Remove the fan from the chassis. To install the chassis fan, reverse the removal procedure. Service Reference Guide, dc5750 437963 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 94
drive cables from the plastic shroud at the front of the chassis and from the hard drives. 4. Lift the shroud straight up 1 about 5-mm (3/16-in) before pulling it into the chassis 2 to remove it. To install the shroud, reverse the removal process. 6-26 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 95
inside of the chassis 2. To install the housing assembly, reverse the removal procedures. ✎ When installing the housing, insert the power-button end into the opening and then rotate the USB end into position before inserting the retaining screw. Service Reference Guide, dc5750 437963-001 6-27 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 96
Removal and Replacement Procedures- Microtower (MT) Chassis 6.13 Heatsink 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel and rotate the computer so the system board is parallel require replacing the system board. 6-28 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 97
Microtower (MT) Chassis 6.14 Processor 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer cover (Section 6.3). 3. Disconnect the heatsink control pad supplied in the spares kit. control cable to the system board. Service Reference Guide, dc5750 437963-001 6-29 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 98
and Replacement Procedures- Microtower (MT) Chassis Ä 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 found on the Web at: http://h18000.www1.hp.com/support/files. 6-30 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 99
and Replacement Procedures- Microtower (MT) Chassis 6.15 Speaker 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Section 6.3). 3. Remove the hard drive cables from the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 100
system board. 4. Remove the screws that connect the power supply to the chassis 1. 5. Pull the power supply towards the front of the chassis then, lift the power supply from the chassis 2. To install the power supply, reverse the removal procedure. 6-32 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 101
Procedures- Microtower (MT) Chassis 6.17 System Board 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Section 6.3). 3. Remove all PCI expansion cards (Section - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 102
to remove an expansion card to gain access to the battery. 3. Locate the battery and battery holder on the system board. 4. Depending on the type of battery holder on your system board, complete the following instructions to replace the battery: 6-34 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 103
Replace the computer access panel (Section 6.3). 5. Plug in the computer and turn on power to the computer. 6. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 104
and Replacement Procedures- Microtower (MT) Chassis 6.18 computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 6-36 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 105
place. 3. Replace the computer access panel (Section 6.3). 4. Plug in the computer and turn on power. 5. 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, dc5750 437963-001 6-37 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 106
Removal and Replacement Procedures- Microtower (MT) Chassis 6-38 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 107
7 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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 108
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.2 External Security Devices 7.2.1 Cable Lock The cable lock may be used to secure the access panel to the chassis and, at the same time, secure the computer to a fixed object. Insert the cable lock in the location shown below. - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 109
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.3 Access Panel 1. Prepare the computer for disassembly (Section 7.1). Ä CAUTION: Before removing the access panel, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 1. Push - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 110
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.4 Front Bezel 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.4). 3. Press install the afront bezel, reverse the removal procedure. 7-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 111
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.5 Front Drive Bezels 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove the drive bezel by pushing the two retaining tabs that hold the bezel in place towards the outer left - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 112
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. ■ Keep cables clear of movable or rotating parts like the power supply and drive cage to prevent them from being cut or crimped when - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 113
- Small Form Factor (SFF) Chassis 7.6.1 Cable Connections System board connectors are color-coded to make it easier to find the proper connection. Cable To Cable Designator Power Supply Main power, P1 P1 Power Supply 1st SATA Hard drive P2 Power Supply CPU power P3 Power Supply 2nd - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 114
inch diskette drive, hard drive, or media card reader may be installed in this bay but the correct bezel must be installed to ensure proper air flow. To verify the type and size of the storage device installed in the computer, run Computer Setup. 7-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 115
Procedures- Small Form Factor (SFF) Chassis 7.7.2 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. 1. Prepare the computer for disassembly - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 116
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 6. Remove the two M3 metric guide screws in the lower holes on each side of th edrive. HP has provided four extra M3 metric guide screws on the front of the chassis, under the front bezel. The M3 metric guide screws are black. Ä - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 117
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 8. Connect the power 1 cable and data 2 cables to the rear of the optical drive. 9. Complete the installation of the drive by reversing the remainder of the removal process. Service Reference Guide, dc5750 437963-001 7-11 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 118
- Small Form Factor (SFF) Chassis 7.7.3 External 3.5-inch Drive 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove the front bezel (Section 7.4). 4. Remove the optical drive (Section 7.7.2). 5. .Disconnect the data 1 and power 2 cables - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 119
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7. Tilt the left side of the drive down slightly 1 so that the top lip of the guide screws are not caught behind the metal frame, the pull the drive out of the drive bay 2. To replace the drive, reverse the removal procedure. ✎ When - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 120
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.7.4 Hard Drive A Torx T-15 screwdriver is needed to remove and install the guide screws on a hard drive. Ä CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 121
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7. Press down on the lever to the left of the hard drive 1, slide the drive back until it stops, and lift it straight up 2. 8. Tilt the left side of the hard drive down slightly 1 so that the top lips of the guide screws are not - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 122
and Replacement Procedures- Small Form Factor (SFF) Chassis ✎ If the system has only one SATA hard drive, the data cable must be connected to the dark blue connector labeled SATA0 on the system board to avoid any hard drive performance problems. If you are adding a second drive, connect the other - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 123
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.8 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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 124
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis ✎ A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket. 7. Push the module down into the socket, ensuring that the module is fully inserted and properly seated. Make sure - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 125
Small Form Factor (SFF) Chassis 7.9 Expansion Card 7.9.1 Expansion Card Retainer 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power inside of the chassis. Service Reference Guide, dc5750 437963-001 7-19 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 126
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 6. If you are removing an existing PCI card, hold the card at each end, andcarefully rock it back and forth until the connectors pull free from the socket. Pull the card straight up from the socket then back towards the inside of - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 127
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.10 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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 128
Procedures- Small Form Factor (SFF) Chassis 7.11 Fan Shroud 1. Prepare the computer for disassembly computer. To replace the shroud, reverse the removal procedures. ✎ When replacing the shroud, make sure that it does not get caught on any wires. 7-22 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 129
Replacement Procedures- Small Form Factor (SFF) Chassis 7.12 Front I/O Device 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove the fan shroud (Section 7.11). 4. Remove the optical drive (Section 7.7.2). 5. Rotate the optical drive retainer to - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 130
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.13 Chassis Fan 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove the fan shroud (Section 7.11). 4. Disconnect the chassis fan power cable from the system board. 5. Remove - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 131
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 access panel (Section 7.3). 3. Remove the fan shroud (Section 7.11). 4. Remove the optical drive (Section 7.7.2). 5. Rotate the optical - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 132
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7. Squeeze the switch holder retaining clips together at the front of the chassis 1 and push the switch assembly out of the chassis 2. Push the two LEDs out of the chassis 3. To install the power switch and LEDs, reverse the removal - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 133
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.15 Speaker 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel(Section 7.3). 3. Remove the To install the speaker, reverse the removal procedures. Service Reference Guide, dc5750 437963-001 7-27 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 134
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.16 Heatsink 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove install the fan shroud may cause the computer to overheat. 7-28 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 135
and Replacement Procedures- Small Form Factor (SFF) Chassis 7.17 Processor 1. Prepare the computer for disassembly ( the heatsink with an alcohol pad supplied in the spares kit. After the alcohol has evaporated, control cable to the system board. Service Reference Guide, dc5750 437963-001 7-29 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 136
Replacement Procedures- Small Form Factor (SFF) Chassis Ä 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 found on the Web at: http:\\h18000.www1.hp.com/support/files. 7-30 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 137
- Small Form Factor (SFF) Chassis 7.18 System Board 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the access panel (Section 7.3). 3. Remove all PCI and PCI Express expansion boards (Section 7.9). 4. Remove the fan shroud from the chassis (Section 7.11). 5. Remove the optical drive - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 138
- Small Form Factor (SFF) Chassis 7.19 Battery The battery that comes with this computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the computer. The computer comes - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 139
. 4. Replace the computer access panel. 5. Plug in the computer and turn on power to the computer. 6. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, dc5750 437963-001 7-33 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 140
Small Form Factor (SFF computer access panel. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 7-34 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 141
- Small Form Factor (SFF) Chassis 7.19.3 Type 3 Battery Holder 1. Pull back on the clip 1 that holds the battery in place, then remove the battery 2. 2. Insert the new battery and position the clip back in place. 3. Replace the computer access panel. 4. Plug in the computer and turn on power to - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 142
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7-36 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 143
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 Unused Ethernet BNC Connector and Icon Pin 1 (Center) 2 (Shield) Signal Data Ground Service Reference Guide, dc5750 437963-001 A-1 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 144
1 4 Data Bit 2 5 Data Bit 3 6 Data Bit 4 Pin Signal 7 Data Bit 5 8 Data Bit 6 9 Data Bit 7 10 Acknowledge 11 Busy 12 Paper End Pin 13 14 15 16 17 18-25 Signal Select Auto Linefeed Error Initialize Printer Select IN Signal Ground A-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 145
Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_Left Audio_Right Ground Line-In Audio Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_In_Left Audio_In_Right Ground Service Reference Guide, dc5750 437963-001 A-3 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 146
Audio Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_Out_Left Audio_Out_Right Ground External Infrared Transceiver Connector and Icon Pin Signal 1 Transmit 2 Receive 3 Ground Monitor DDC Serial Clock A-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 147
(IDE) Standard Drive Cable Connector Connector DA1 34 PDIAG (cable detect) 35 DA0 36 DA2 37 CS1FX 38 CS3FX 39 DASP 40 Ground 24-Pin Power (CMT and MT models) Connector 24 13 Pin Signal 1 +3.3 V 2 +3.3 V 3 GND 4 +5 V 23 +5 V 24 GND Service Reference Guide, dc5750 437963-001 A-5 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 148
and CMT models) Connector and Icon Pin 1 2 3 4 CMT and MT Signal GND GND +12 V CPU -12 V CPU 6-Pin Power (for CPU) (USDT, SFF, and ST models) Connector and Icon Pin Signal 1 GND 2 GND 3 GND 4 6 4 12 V CPU 5 12 V CPU 6 +12 V A-6 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 149
Signal S1 Ground S5 B- S2 A+ S6 B+ P1 V 3.3 P5 Ground P9 V 5 P13 V 12 P2 V 3.3 P6 Ground P10 Ground P14 V 12 *S = Data, P = Power Pin Signal S3 AS7 Ground P3 V 3.3 P7 V 5 P11 Reserved P15 V 12 Pin Signal S4 Ground P4 Ground P8 V 5 P12 Ground Service Reference Guide, dc5750 437963-001 A-7 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 150
GND 25 PERp2 46 GND 47 PERp7 48 PERn7 49 GND 50 RSVD 71 GND 72 PERp13 73 PERn13 74 GND 75 GND A-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 151
PETp2 24 PETn2 25 GND 46 PETn7 47 GND 48 PRSNT2# 49 GND 50 PETp8 71 PETn13 72 GND 73 GND 74 PETp14 75 PETn14 Service Reference Guide, dc5750 437963-001 A-9 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 152
- Pin Signal 13 T.M.D.S. Data3+ 14 +5V Power 15 Ground (for +5V) 16 Hot Plug Detect 17 T.M.D.S. Data018 T.M.D.S. Data0+ 19 T.M.D.S. Data0/5 Shield 20 T.M.D.S. Data5- 21 T.M.D.S. Data5+ 22 T.M.D.S. Data Shield 23 T.M.D.S. Clock+ 24 T.M.D.S. Clock- A-10 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 153
the power cord set is damaged in any manner, replace it immediately. Japanese Power Cord Requirements For use in Japan, use only the power cord received with this product. Ä CAUTION: Do not use the power cord received with this product on any other products. Service Reference Guide, dc5750 437963 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 154
must be Type HO5VV-F, 3-conductor, 0.75mm2 conductor size. Power cord set fittings (appliance coupler and wall plug) must bear size. Wall plug must be a two-pole grounding type with a Japanese Industrial Standard C8303 (7A, 125V) configuration. B-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 155
from being downloaded during POST to free more memory for an expansion card's option ROM. Internal PXE option ROM is used for booting from the NIC to a PXE server. 3. Ensure that the ACPI/USB Buffers @ Top of Memory setting in Computer Setup is enabled. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 156
the date and time under Control Panel (Computer Setup can also be used). If the problem persists, replace the RTC battery. Check for proper placement of the CMOS jumper, if applicable. Press the F1 key to save the memory changes. 1. Run Computer Setup (F10 Setup) or Windows utilities. 2. Make sure - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 157
Computer Setup and reset the IRQ in Advanced > Onboard Devices. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. 3. Verify that the monitor is attached and turned on. 4. Replace the graphics card (if applicable). Reflash the system ROM with the latest BIOS image Service Reference Guide - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 158
allow system to reconfigure without the drive. Run Computer Setup and check the configuration in Advanced > Onboard Devices. Replace system board if minimal graphics degrading is an issue. No action required. Reconnect or replace front audio harness. C-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 159
any serial port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. 1. Remove any serial port expansion cards. 2. Clear CMOS. 3. Reconfigure card resources and/or run Computer Setup or Windows utilities. Enter Computer Setup and reset the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 160
> SATA Emulation back to RAID and select File > Save Changes and Exit. 1. Upgrade BIOS to proper version. 2. Change the processor. 1. Run Computer Setup. If Setup already 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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 161
RAM failure. CPU fan not installed or disconnected in VSFF chassis. Recommended Action 1. Reconnect keyboard with computer 4. Replace keyboard. Run Computer Setup and diagnostic utilities. 1. Remove the access panel, press the power button, and see if Service Reference Guide, dc5750 437963-001 C-7 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 162
every two seconds. Red Power LED flashes two times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Beeps None None 2 Possible Cause Recommended Action Computer on. None Computer in Suspend to RAM mode (some models - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 163
unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. 1. Reseat DIMMs. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Service Reference Guide, dc5750 437963-001 C-9 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 164
the graphics card. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. Replace the system board. 1. Reflash the ROM with the latest BIOS image. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 165
board. 1. Check each option card by removing the card (one at a time if multiple cards), then power on the system to see if fault goes away. 2. Once a bad card is identified, remove and replace the bad option card. 3. Replace the system board. Service Reference Guide, dc5750 437963-001 C-11 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 166
, then replace the power button harness. 5. If the 5 V_aux light on the system board is not turned on, remove the expansion cards one at a time until the 5 V_aux light on the system board turns on. If the problem persists, replace the power supply. C-12 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 167
computer turned on? ■ Is the green power light illuminated? ■ Is the monitor turned on? ■ Is the green monitor light illuminated? ■ Turn up the monitor brightness and contrast controls if the monitor is between the NIC and the riser/system board? Service Reference Guide, dc5750 437963-001 D-1 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 168
Troubleshooting Without Diagnostics Solving Minor Problems Solving Minor Problems Problem Cause Computer appears locked up and will not turn off when the power button is pressed. Software control of the power switch is not functional. Computer will not respond to USB keyboard or mouse. - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 169
application or consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application. 2. Add more memory. 3. Upgrade the graphics solution. Restart the computer. Service Reference Guide, dc5750 437963-001 D-3 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 170
Troubleshooting Without Diagnostics Solving Minor Problems (Continued) Problem Cause Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. Beeps continue for five iterations after which the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 171
Troubleshooting Without Diagnostics Solving Power Supply Problems Solving Power Supply Problems Problem Cause Power supply shuts down intermittently. Voltage selector switch on rear of computer chassis (some models) is not switched to correct line voltage (115V or 230V). Power supply will not - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 172
Troubleshooting Without Diagnostics Solving Power Supply Problems (Continued) Problem Cause Solution Power LED flashes Red, four times, once every second, followed by a two second pause, and the computer beeps four times. Beeps continue for five iterations after which the LED flashes will - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 173
Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now. Remove diskette and reinsert. Reconnect power : FORMAT A: /F:1440 Open the locking device on the diskette. Service Reference Guide, dc5750 437963-001 D-7 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 174
in Storage > Storage Options > Removable Media Boot. ✎ Both steps should be used as the Removable Media Boot function overrides the Boot Order enable command. Run Computer Setup and disable Network Server Mode in Security > Password Options. D-8 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 175
delay under Advanced > Power-On. Run Computer Setup and ensure the device's SATA port is enabled in Storage > Storage Options. Run Computer Setup and increase the POST Delay in Advanced > Power-On Options. Remove the diskette from the diskette drive. Service Reference Guide, dc5750 437963-001 D-9 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 176
Storage > Storage Options. Run the Computer Setup utility and change boot sequence in Storage > Boot Order. Run the Computer Setup utility and change the "Emulation Type" to "Hard Disk" in the device's details under Storage > Device Configuration. D-10 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 177
to turn off the power. To restart the computer, press the power button. Solving Media Card Reader Problems Solving Media Card Reader Problems Problem Cause Media card will not work in a digital camera after formatting it in Microsoft Windows XP. By default, Windows XP will format any media - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 178
will not boot from a USB removable drive or media that is inserted in the USB port on the media card reader. The media card reader is connected to the computer via the PCI card, which is not supported on the HP Desktop BIOS. After installing the media card reader, the front USB ports on the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 179
, the computer will shut down and you will lose any unsaved data. If the computer system has both an integrated graphics connector and an add-in graphics card connector, plug the monitor cable into the graphics card connector on the back of the computer. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 180
HP memory. 4. Replace the system board. For systems with a graphics card: 1. Reseat the graphics card. Power on the system. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. D-14 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 181
controls. Check that the graphics cable is securely connected to the graphics card and the monitor. Install the video drivers included in the upgrade kit. Change requested resolution. Replace the graphics card. 1. Be sure the monitor cable is securely connected to the computer. 2. In a two-monitor - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 182
a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support 1. Reseat the graphics card. 2. Replace the graphics card. D-16 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 183
retest the audio. Double-click the Speaker icon on the taskbar, then make sure that Mute is not selected and use the volume slider to adjust the volume. Enable the audio in Computer Setup: Security > Device Security >Audio. Turn on the external speakers. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 184
the correct jack on the rear of the computer. If the correct jack is being used and the problem persists, the jack may have been retasked to perform a function that is different from the default function. Open the Realtek control panel by clicking the Reltek HD Audio Manager icon in the task tray or - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 185
Troubleshooting Without Diagnostics Solving Audio Problems (Continued) Problem Cause Sound does not come out of the speaker or headphones. (continued) Computer is in standby mode. Sound from headphones is not clear or muffled. Computer appears to be locked up while recording audio. Headphones - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 186
Shut down the computer using the mouse and then restart the computer. See the Worldwide Limited Warranty for terms and conditions. 1. Check software, if available, for device status. 2. Check/replace device batteries. 3. Reset receiver and keyboard. D-20 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 187
Troubleshooting Without Diagnostics Solving Keyboard and Mouse Problems (Continued) Problem Cause Solution Computer is in standby mode. Press the power button to resume from standby mode. Ä When attempting to resume from standby mode, do not hold down the power button for more than four - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 188
not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. Remove roller ball cover from the bottom of the mouse and clean the internal components with a mouse cleaning kit. D-22 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 189
Troubleshooting Without Diagnostics Solving Hardware Installation Problems You may need to reconfigure the computer when you add or remove hardware, such as an additional diskette drive. If you install a plug and play device, Windows XP automatically recognizes the device and configures the - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 190
-party memory with HP memory. 4. Replace the system board. Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Graphics card - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 191
status. 1. Run Computer Setup and enable network controller. 2. Enable the network controller in the operating system via Device Manager. Reinstall network drivers. Disable auto-sensing capabilities and force the system into the correct operating mode. Service Reference Guide, dc5750 437963-001 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 192
to the computer. The network controller is not configured for this computer. Network controller interrupt is shared with an expansion board. The network controller requires drivers. Network controller stops working without apparent cause. The expansion board installed is a network card (NIC) and - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 193
Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Cause Network controller stops working without apparent cause. (continued) The network controller is defective. New network card will not boot. New network card may be defective or may not meet industry-standard - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 194
Memory Problems Ä CAUTION: Power may still be supplied to the DIMMs when the computer is turned off. To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. For those systems that support ECC memory, HP - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 195
Troubleshooting Without Diagnostics Solving Processor Problems . Solving Processor Problems Problem Cause Poor performance is experienced. Processor is hot. Power LED flashes Red three times, once every second, followed by a two second pause, and the computer beeps three times. Beeps continue - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 196
it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, run the Computer Setup utility and try adding a POST delay under Advanced > Power-On. Run the Computer Setup utility and ensure the device's SATA - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 197
this topic. CD or DVD disc is dirty. Clean CD or DVD with a CD cleaning kit. Windows does not detect the CD-ROM or DVD-ROM drive. 1. Use Device Manager to remove or uninstall the device in question. 2. Restart the computer and let Windows detect the device. Recording audio CDs is difficult or - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 198
Troubleshooting Without Diagnostics Solving Drive Key Problems Solving Drive Key Problems Problem Cause Drive Key is not seen as a drive letter in Windows XP. The drive letter after the last physical drive is not available. USB Drive Key not found (identified). The device is attached to a - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 199
driver for the device. 2. You might need to reboot the computer. The cable from the device to the computer does not work. 1. If possible, replace the cable. 2. Restart the computer. The device is not working. 1. Replace the device. 2. Restart the computer. Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 200
On the General tab, click the Delete Cookies button. Windows 2000 1. Select Start > Settings > Control Panel. 2. Double-click Internet Options. 3. On the General tab, click the Delete Cookies button. Log on to the ISP and launch the desired program. D-34 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 201
Troubleshooting Without Diagnostics Solving Internet Access Problems (Continued) Problem Cause Solution Internet takes too long to download Web sites. Modem is not set up properly. Verify that the correct modem speed and COM port are selected. For Windows XP 1. Select Start > Control Panel. - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 202
recovery diskette to scan hard drive for errors. Verify that the software is certified by Microsoft for your version of Windows (see program packaging for this information). If possible, save all data, close all programs, and restart the computer. D-36 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 203
-LED CR3 UID LED CR4 Power LED CR35 E14 E15 E16 E25 E49/JP49 Hard drive activity LED Boot block header/jumper Boot block recovery header ROM recovery header CPLD programming header Clear Password header/jumper E50 Clear CMOS header J7 RJ45 jack J9 Stacked RJ45/Dual USB J10 Quad stacked - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 204
double-stack USB, Top = Port 4, Bottom = Port 3 Triple-stacked audio jack (line in, line out/headphone, microphone) Security board connector - for security card PCI slots on riser card PCI express slots on riser card Clear password header/jumper USB front port choke (1st) USB rear port choke (1st - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 205
front panel audio Header for front panel USB Internal PC graphics connector (outboard) Blade PC graphics CPU) fan header for fansink Secondary CPU card Clear CMOS switch/push button Single chip solution (combined northbridge/southbridge) North bridge South bridge Super I/O Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 206
transceiver VRM controller USB front port power switch First USB rear port power switch Second USB rear port power switch Third USB rear port power switch Battery retainer Memory slot. DIMM1 Secondary NIC clock crystal RTC clock crystal/tie-down E-4 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 207
F Memory The dc5750 series computers with AMD-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 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 208
other channel should be populated with the two 512MB DIMMs. With this configuration, 2 GB will run as dual channel and 256 MB will run as single channel. ■ In any mode, the maximum operational speed is determined by the slowest DIMM in the system. F-2 437963-001 Service Reference Guide, dc5750 - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 209
1-1 protecting ROM BIOS 3-7 change notification (PCN) 3-7 changing password 3-20 chassis MT illustrated 5-2 SFF illustrated 5-1 chassis fan MT removal and replacement 6-25 SFF removal and replacement 7-24 chassis types, illustrated 5-1 cleaning computer 5-6 keyboard 5-6 monitor 5-7 mouse 5-7 safety - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 210
replacement 6-16 drive key, problem solving D-32 drive positions MT 6-15 SFF 7-8 drive, external MT removal and replacement 6-16 Drivelock security 3-21 dual-state power button 3-14 DVI pin assignments A-10 E electrostatic discharge See ESD entering power-on password 3-19 setup password 3-19 error - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 211
-in audio pin assignments A-3 line-out audio pin assignments A-4 locking Smart Cover Lock 3-24 M memory DDR2 specifications F-1 MT removal and replacement 6-10 problem solving D-28 SFF removal and replacement 7-17 socket assignments F-2 microphone pin assignments A-3 Microtower See MT monitor blank - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 212
D-20 media card reader D-11 memory D-28 mouse D-20 network D-25 optical drives D-30 power supply D-5 printer D-19 processor D-29 software D-36 Wake-on-LAN D-25 processor MT removal and replacement 6-29 problem solving D-29 SFF removal and replacement 7-29 protecting ROM BIOS 3-7 PXE (Preboot - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 213
hard drive characteristics 4-1 pin assignments A-7 power cable pinouts 4-2 screws, correct size 5-8 SDRAM (synchronous dynamic random access memory) F-1 security DriveLock 3-21 fingerprint identification technology 3-25 HP ProtectTools Security Manager 3-5 MT external 6-2 to 6-3 password 3-18 SFF - HP Dc5750 | HP Compaq dc5750 Business PC Service Reference Guide, 1st Edition - Page 214
Index Small Form Factor See SFF Smart Cover Lock locking 3-24 unlocking 3-24 Smart Cover Sensor protection levels 3-23 setting 3-23 software Altiris Deployment Solution Agent 3-2 asset tracking 3-15 Boot Block Emergency Recovery Mode 3-9 Computer Setup Utilities 2-1 Drive Protection System 3-25
-
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100
-
101
-
102
-
103
-
104
-
105
-
106
-
107
-
108
-
109
-
110
-
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
-
136
-
137
-
138
-
139
-
140
-
141
-
142
-
143
-
144
-
145
-
146
-
147
-
148
-
149
-
150
-
151
-
152
-
153
-
154
-
155
-
156
-
157
-
158
-
159
-
160
-
161
-
162
-
163
-
164
-
165
-
166
-
167
-
168
-
169
-
170
-
171
-
172
-
173
-
174
-
175
-
176
-
177
-
178
-
179
-
180
-
181
-
182
-
183
-
184
-
185
-
186
-
187
-
188
-
189
-
190
-
191
-
192
-
193
-
194
-
195
-
196
-
197
-
198
-
199
-
200
-
201
-
202
-
203
-
204
-
205
-
206
-
207
-
208
-
209
-
210
-
211
-
212
-
213
-
214
 |
 |
service reference guide
HP Compaq dc5750 Business PC
1st Edition
x
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, SATA drives, safety, routine care, connector pin assignments, POST
error messages, and diagnostic indicator lights.
Document Part Number 437963-001