HP dx6120 HP Business Desktop dx6100 Series Personal Computers Service Referen
HP dx6120 - Microtower PC Manual
View all HP dx6120 manuals
Add to My Manuals
Save this manual to your list of manuals |
HP dx6120 manual content summary:
- HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 1
service reference guide HP Compaq Business Desktop dx6100 Series 3rd 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, - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 2
- HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 3
Service Reference Guide HP Compaq Business Desktop dx6100 Series 3rd Edition Document Part Number: 361293-003 First Edition, July 2004 Third Edition, June 2006 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 4
Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and other countries. Intel is a trademark of Intel Corporation in the U.S. and other countries. The only warranties for HP products and services information. Service Reference Guide HP Compaq Business Desktop dx6100 Series - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 5
1.1 Installing or Upgrading Device Drivers 1-1 1.2 Transferring Files and Settings 1-2 1.3 Backing Up and Restoring Files 1-2 1.3.1 Creating a Backup File-Windows XP Professional 1-2 1.3.2 Restoring from the Backup File-Windows XP Professional 1-2 1.4 Converting to NTFS 1-2 1.5 HP Software - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 6
BIOS 4-11 4.6.1 Legacy Mode 4-11 4.6.2 Native Mode 4-11 4.7 Mixed Devices Boot and Drive Letter Ordering 4-12 5 Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1 Chassis Designations 5-1 5.1.1 Microtower (MT 5-1 5.1.2 Slim Tower (ST -003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 7
26 6.13 Power Switch Assembly 6-27 6.14 Heatsink 6-28 6.15 Processor 6-29 6.16 System Board 6-31 6.17 Battery 6-32 6.17.1 Type 1 Battery Holder 6-33 6.17.2 Type 2 Battery Holder 6-34 6.17.3 Type 3 Battery Holder 6-35 6.18 Speaker 6-36 6.19 Power Supply 6-37 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 8
Processor 7-41 7.17 Speaker 7-43 7.18 Power Supply 7-44 7.19 System Board 7-46 7.20 Chassis Fan 7-51 7.21 Backwall 7-52 7.22 Battery 7-58 7.22.1 Type 1 Battery Holder 7-59 7.22.2 Type 2 Battery Holder 7-60 7.22.3 Type 3 Battery Holder 7-61 vi 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 9
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 Contents Service Reference Guide, dx6100 361293-003 vii - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 10
Contents viii 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 11
Download drivers and software, enter the model number of the computer, and press Enter. You can also obtain the latest support software on CDs. The following Web site provides information on how to purchase a support software CD subscription: http://h18000.www1.hp.com/support/files/desktops/us - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 12
be installed at that time on selected models: ■ Computer Setup Utilities ■ HP Support Software including device drivers ■ Configuration Record ■ Online Safety & Comfort Guide ■ Power Management with energy saver features ■ Security Management tools 1-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 13
of these files, in English and selected other languages, in one of three ways: ■ Support Software CD ■ HP Web site at www.hp.com ■ Restore Plus! CD, which is supplied with many HP models ✎ Additional HP software may be required in certain situations. Service Reference Guide, dx6100 361293-003 1-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 14
Installing the Operating System 1-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 15
when contacting Customer Support. These tools can not be available on all HP products. 2.1 Power-On Self-Test (POST) error in the system, an audible and/or visual message occurs. For POST error messages and their solutions refer to Appendix C, "POST Error Messages." Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 16
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 MultiBay drive). 2-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 17
you are in Windows, click Start > see a Keyboard Error message-disregard it power OFF while the ROM is saving your F10 Computer Setup changes because the CMOS could become corrupted. It is safe to turn off all power to the computer after you exit the F10 Setup screen. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 18
Type Identifies the highest capacity media type accepted by the diskette drive. Legacy Diskette Drives Options are 3.5" 1.44 MB, and 5.25" 1.2 MB. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 19
select a drive emulation type for a certain storage to be used for the device. This enables the BIOS to access disks partitioned and formatted on other systems Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx6100 361293-003 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 20
appear as two separate IDE controllers. Use this option with Microsoft Windows 2000 and Windows XP. • SATA 0 is seen as SATA Primary Device 0 • SATA Support for specific Computer Setup options may vary depending on the hardware configuration. 2-6 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 21
cover has been removed. This feature is supported on select models only. See the Desktop Management Guide on the Documentation CD for more information. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx6100 361293-003 2-7 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 22
device to Factory Settings. This feature is supported on select models only. See the Desktop Management Guide on the Documentation CD for more information. Enables/disables serial ports, parallel port, front USB ports, system audio, network controllers (some models), MultiBay devices (some models - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 23
inaccessible. Only restore a previously saved MBR ifyou are confident that the current bootable disk's MBR has been corrupted or infected with a virus. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx6100 361293-003 2-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 24
enables or disables SATA bus and/or device power management. Thermal Fan idle mode - This bar graph controls the minimum permitted fan speed. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 25
will allow Microsoft Windows Operating Systems to run optimally. This feature must be disabled for certain non-Microsoft Operating Systems to work properly. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dx6100 361293-003 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 26
palette snooping, which sets the VGA palette snooping bit in PCI configuration space; only needed when more than one graphics controller is installed. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-12 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 27
set: • NIC PXE Option ROM Download (enable/disable). The BIOS contains an embedded NIC option ROM to allow the unit to boot through the network to a PXE server. This is typically used to download a corporate image to a hard drive. The NIC option ROM takes up memory space below 1MB commonly referred - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 28
. Running tests is optional but recommended after installing or connecting a new device. Third party devices not supported by HP may not be detected by Diagnostics for Windows. Save, print, or display the information generated by the utility. 2-14 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 29
://www.hp.com/support/files and click on an applicable product. Locate the desired software and download the latest version. Execute the downloaded file and select Repair to update the installed version. This will cause the new version to overwrite the old version. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 30
-Keyboard, mouse, and joystick(s) ❏ Communication-Ports ❏ Storage-Storage drives ❏ Graphics-Graphics ❏ Memory-System board and Windows memory ❏ Multimedia-Optical storage (CD, DVD, and so on) and audio ❏ Windows-Windows ❏ Architecture-PCI Device 2-16 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 31
of errors, and the error code. ■ Help-Contents, How to use Help, About 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 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 32
run, the number of errors found on each test, and the total run time of each test. ❏ Error-Lists all errors found on the computer with their error codes. 7. To save a split window with the differences between the two highlighted in the color red. 2-18 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 33
periodically allows the user to keep a history of the configuration. This history may be useful to you in the future if the system ever encounters a problem that needs debugging. 4. To exit Configuration Record, click File, then click Exit. Service Reference Guide, dx6100 361293-003 2-19 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 34
Setup Utilities and Diagnostics Features 2-20 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 35
PCs in a networked environment. The key capabilities and features of desktop management are: ■ Initial configuration and deployment ■ Remote system installation ■ Software updating and management ■ ROM flash ■ Asset tracking and security ■ Fault notification and recovery ✎ Support for specific - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 36
with thermal warnings, memory alerts, and more ■ Remote updating of system software such as device drivers and ROM BIOS ■ Remote changing of boot order For more information on the HP Client Manager, visit http://h18000.www1.hp.com/im/client_mgr.html. 3-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 37
as a file store. Driver versions that are supported by SSM are denoted with a special icon on the driver download Web site and on the Support Software CD. To download the utility or to obtain more information on SSM, visit http://www.hp.com/go/ssm. Service Reference Guide, dx6100 361293-003 3-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 38
updated or overwritten. This is important to ensure the operating integrity of the computer. Should you need or want to upgrade your ROM, you may: ■ Order an upgraded ROMPaq™ diskette from HP. ■ Download the latest ROMPaq images the HP driver and support page, http://www.hp.com/support - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 39
Desktop Management 3.3.8 HPQFlash The HPQFlash utility is used to locally update or restore the system ROM on individual PCs through a Windows operating system. For more information on HPQFlash, visit http://www.hp.com/support/files and enter the name of the computer when prompted. 3.3.9 FailSafe - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 40
-specific. File system corruption may result if source and target computers are not the same model. For example, do not copy the setup configuration from a dc7100 Ultra-Slim Desktop to a dx6100 Slim Tower. 1. Select a setup configuration to copy. Turn off the computer. If you are in Windows, click - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 41
-specific. File system corruption may result if source and target computers are not the same model. For example, do not copy the setup configuration from a dc7100 Ultra-Slim Desktop to a dx6100 Slim Tower. This method takes a little longer to prepare the configuration diskette or USB flash media - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 42
Business Desktop dx6100 series ❏ HP Compaq Business Desktop d530 Series - Ultra-Slim Desktop, Small Form Factor, or Convertible Minitower ❏ Compaq Evo D510 Ultra-slim Desktop ❏ Compaq Evo D510 Convertible Minitower/Small Form Factor Depending on the individual BIOS, future systems may also support - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 43
Label. 11. Press Enter for no label or enter one if desired. 12. Copy any files you saved in step 9 back to your USB flash media device. 13. Remove the diskette and reboot the computer. The computer will boot to the USB flash media device as drive C. Service Reference Guide, dx6100 361293-003 3-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 44
Business Desktop dx6100 series ❏ HP Compaq Business Desktop d530 Series-Ultra-Slim Desktop, Small Form Factor, or Convertible Minitower ❏ Compaq Evo D510 Ultra-Slim Desktop ❏ Compaq Evo D510 Convertible Minitower/Small Form Factor Depending on the individual BIOS, future systems may also support - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 45
a DOS version from Windows 9x, you may see a brief Windows logo screen. If you do not want this screen, add a zero-length file named LOGO.SYS to the root directory of the USB flash media device. Return to "Copying to Multiple Computers" on page 7. Service Reference Guide, dx6100 361293-003 3-11 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 46
with other systems management applications, and are based on industry standards, such as: ■ Web-Based Enterprise Management (WBEM) ■ Windows Management Interface (WMI) ■ Wake on LAN Technology ■ ACPI ■ SMBIOS ■ Pre-boot Execution (PXE) support 3-12 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 47
See the Desktop Management Guide on the Documentation CD for more information. ✎ 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, dx6100 361293 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 48
/disables serial ports, parallel port, front USB ports, system audio, network controllers (some models), MultiBay devices (some models), and SCSI controllers (some models). Network Service Boot Enables/disables the computer's ability to boot from an operating system installed on a network server - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 49
the BIOS during the next reboot, and an MBR Security warning message will be displayed. ✎ 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, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 50
about Computer Setup, see the Computer Setup (F10) Utility Guide. Support for security features may vary depending on your specific computer configuration. Mechanical Security Features Feature Purpose Memory Change Alerts Detects when memory modules have been added, moved, or removed; notifies - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 51
to access the utility. If you are using a PS/2 keyboard, you may see a Keyboard Error message-disregard it. 3. Select Security, then Power-On Password and follow the instructions on the screen. 4. Before exiting, select File > Save Changes and Exit. Service Reference Guide, dx6100 361293-003 3-17 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 52
HP ProtectTools Embedded Security Guide, on the Documentation CD. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. 2. To change the Power , you may see a Keyboard Error message-disregard it. 3-18 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 53
HP ProtectTools Embedded Security Guide, on the Documentation CD. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. 2. To delete the Power may see a Keyboard Error message-disregard it. 3. When the key icon appears, type the current password - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 54
for instructions on clearing passwords. If the system is equiped with an embedded security device, refer to HP ProtectTools Embedded Security Guide, on the Documentation CD. 3.4.4 DriveLock DriveLock is an industry-standard security feature that prevents unauthorized access to the data on specific - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 55
Desktop keep it disabled. If a locked hard drive is present, POST will require a password to unlock the device. If a power-on password control functions, and support. For users with less stringent security requirements, HP does not recommend enabling Service Reference Guide, dx6100 361293-003 3-21 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 56
Desktop Management 3.4.5 Smart Cover Sensor Cover Removal Sensor, available on select models, is a combination of hardware and software technology that can alert you when the computer cover or side panel are in Windows, click Start a Keyboard Error message-disregard HP Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 57
disable the lock, you will need a Smart Cover FailSafe Key to open the computer cover. You will need the key in any of the following circumstances: ■ Power outage ■ Startup failure ■ PC component failure (such as processor or power supply Contact an authorized HP reseller or service provider. ■ Call - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 58
Desktop may see a Keyboard Error message-disregard it. 3. Windows Safe Mode. ✎ Most operating systems control access to the MBR of the current bootable disk; the BIOS Restore the previously saved MBR; or ■ Disable the Disable the MBR Security feature. 3-24 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 59
managing corporate networks. Affordably priced, it is not just for high-tech, high-security organizations anymore. ✎ Support for Fingerprint Identification Technology varies by model. For more information, visit http://h18004.www1.hp.com/products/security. Service Reference Guide, dx6100 361293 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 60
hard drive. Your 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. 3.5.2 Surge-Tolerant Power Supply An integrated surge-tolerant power supply provides greater reliability - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 61
SATA Parallel ATA = PATA HP does not support the use of PATA coded to make identification easier. SATA Identification Primary channel, device 0 Primary channel, device 1 Secondary channel, device 0 Secondary channel, device 1 Color Dark blue Light Blue White Orange Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 62
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 Reserved P12 Ground P13 V 12 12 V power P14 V12 12 V power P15 V12 12 V power 4-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 63
23 10 DD11 24 11 DD3 25 12 DD12 26 13 DD2 27 14 DD13 28 4.2.4 PATA Power Cable Signal DD1 DD14 DD0 DD15 Ground (Key) DMARQ Ground DIOW Ground DIOR Ground IORDY CSEL Pin Ground Pin Usage 1 +12 V 2 Ground 3 Ground 4 +5 V Service Reference Guide, dx6100 361293-003 4-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 64
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. not included as a part of the maximum four drives. 4-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 65
specified sequence. This sequence is determined by the device class of the drives and by specific attach sequence rules. 4.3.1 PATA Device Classes In order to determine the best drive attach sequence on the primary channel in the Device 0 position. Service Reference Guide, dx6100 361293-003 4-5 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 66
on separate channels to maximize compatibility. ■ Keeping the hard drive and the writable optical drive on separate channels to maximize optical drive reliability. 4-6 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 67
Sequence Worksheet Device Class Position Number Channel Name Device Number Two examples of how to use the worksheet are: ■ Three-device installation ■ Four-device installation Service Reference Guide, dx6100 361293-003 4-7 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 68
-100 hard drive 1 1 Primary 0 DVD drive 2 2 Secondary 0 CD-ROM drive 3 3 Secondary 1 ✎ Cable lengths may restrict drive usage. 4 3 Primary Channel* Secondary Channel 1 2 4 1 3 2 Device 1 Device 0 4-8 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 69
4.3.4 PATA Additional Drive Application Notes ■ When replacing a hard drive, the replacement should be of the same type (Ultra ATA -33, -66, or -100) as that being removed to retain the same level of boot order is changed in Computer (F10) Setup. Service Reference Guide, dx6100 361293-003 4-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 70
Limits File System FAT 32 FAT 32 NTFS NTFS Controller Type ATA SCSI ATA SCSI Operating System Windows 2000/ XP Windows 2000/ XP Windows NT/2000/XP Windows NT/2000/XP Maximum Size Partition 32 GB 32 GB 2 TB 2 TB Drive 128 PB 2 TB 128 PB 2 TB 4-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 71
Drive Guidelines and Features 4.6 SATA BIOS Windows 2000 and XP Enhanced Mode (default BIOS Setting) -Separate IDE controller • cards and is not supported by many legacy operating systems. Addresses are assigned by PCI Plug-n-Play BIOS and the IRQ is Service Reference Guide, dx6100 361293-003 4-11 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 72
(default). Used with Windows 2000 and XP. Hard Drive Order A. Integrated SATA B. Integrated IDE Separate IDE Controller. Used with Windows 2000 and XP. A. Integrated IDE B. IDE Device 1 A1. IDE Device 0 A2. IDE Device 1 B1. SATA 0 B2. SATA 2 4-12 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 73
into 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 Microtower (MT) Service Reference Guide, dx6100 361293-003 5-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 74
Preparation 5.1.2 Slim Tower (ST) 5.2 Electrostatic power to alter device parameters or melt silicon junctions. 5.2.1 Generating Static The following table shows that: ■ Different activities generate different amounts of static electricity. 5-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 75
worn snug against bare skin. The ground cord must be connected and fit snugly into the banana plug connector on the grounding mat or workstation. Service Reference Guide, dx6100 361293-003 5-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 76
at standing workstations and are compatible with most types of shoes or boots. On conductive floors or free work areas. ■ Turn off power and input signals before inserting and Styrofoam. ■ Use field service tools, such as cutters, hard tie to ground ■ Field service kits ■ Static awareness labels ■ - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 77
the keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow. ■ Occasionally clean the listed above are met. ■ Install or enable power management functions of the operating system or other . Service Reference Guide, dx6100 361293-003 5-5 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 78
the procedures described below: ■ To remove light stains or dirt, use plain water with debris from under the keys, review all rules in Section 5.4.1 before the keys. This tool is available through many electronic supply outlets. Ä CAUTION: Never remove a wide leveled Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 79
■ To clean the mouse body, follow the procedures in Section 5.4.2. 5.5 Service Considerations Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the computer. 5.5.1 Power Supply Fan The power supply fan is a variable-speed fan based on the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 80
they are actually mounted in the CPU. ■ Avoid dropping drives from any 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 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 81
Microtower (MT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service before disconnecting any cables. Ä CAUTION: Regardless of the power-on state, voltage is always present on the system board Service Reference Guide, dx6100 361293-002 6-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 82
Replacement Procedures- Microtower (MT) Chassis 6.2 External Security Devices 6.2.1 Installing a Cable Lock The cable lock may be used to secure the computer access panel to the chassis and, at the same time, secure the computer to a fixed object. 6-2 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 83
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, dx6100 361293-002 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 84
Microtower (MT) Chassis"). Ä CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that the power with the access panel and pull grip is facing up. To install the access panel, reverse the removal procedure. 6-4 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 85
Microtower (MT) Chassis 6.4 Front Bezel 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.3, "Access Panel"). 3. To remove the front bezel off the chassis from left to right. Service Reference Guide, dx6100 361293-002 6-5 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 86
Removal and Replacement Procedures- Microtower (MT) Chassis To reinstall the front bezel, 1. Position the chassis in the upright position. 2. Insert the hooks on the right side of upper right corner of the bezel snap into the slots on the chassis. 6-6 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 87
and Replacement Procedures- Microtower (MT) Chassis 6.5 Front Drive Bezels 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.3, "Access Panel"). 3. Remove the front bezel (Section 6.4, "Front Bezel"). 6.5.1 5.25" Drive - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 88
two lower 2 tabs for the 3.5" drive bezel towards the center of the 3.5" drive bezel and push the bezel blank out to remove it from the front bezel. To install a bezel blank, reverse the removal procedure. 6-8 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 89
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. Service Reference Guide, dx6100 361293-002 6-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 90
- Microtower (MT) Chassis 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 install. To reassemble the computer, reverse the removal procedure. 6-10 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 91
are two different slot cover locks used on this computer chassis. Both are shown for reference purposes. For instructions on standard PCI expansion cards, see Section 6.8.2, "Standard PCI Expansion Card." or 6.7.3, "PCI Express Expansion Card." Service Reference Guide, dx6100 361293-002 6-11 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 92
Removal and Replacement Procedures- Microtower (MT) Chassis 6.8.2 Standard PCI Expansion Card For preliminary steps, see Section 6.8.1, "Expansion Slot Cover." If replacing a standard PCI need to remove the correct expansion slot cover at this time. 6-12 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 93
Removal and Replacement Procedures- Microtower (MT) Chassis 5. When installing an expansion card, hold the card just above the expansion slot on the 2. ✎ Press firmly on the card so that the whole connector seats properly in the expansion card slot. Service Reference Guide, dx6100 361293-002 6-13 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 94
Removal and Replacement Procedures- Microtower (MT) Chassis 7. Replace the slot cover lock using the appropriate procedure for your computer, as illustrated below: » Slide and slot covers to secure them in place 1 and install the retaining screw 2. 6-14 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 95
Removal and Replacement Procedures- Microtower (MT) Chassis 6.8.3 PCI Express Expansion Card For preliminary steps, see Section 6.8.1, "Expansion Slot Cover." If a new expansion card, install an expansion slot cover to close the open slot. Service Reference Guide, dx6100 361293-002 6-15 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 96
Removal and Replacement Procedures- Microtower (MT) Chassis 3. Replace the slot cover lock using the appropriate procedure for your computer, as illustrated below: » Slide . 6. Press the card straight down into the expansion slot on the system board. 6-16 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 97
Removal and Replacement Procedures- Microtower (MT) Chassis ✎ Press firmly on the card so that the whole connector seats properly in the toward the expansion card brackets and slot covers to secure them in place 1 and install the retaining screw 2. Service Reference Guide, dx6100 361293-002 6-17 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 98
Procedures- Microtower (MT) Chassis 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 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 99
"Access Panel"). 3. Remove the front bezel (Section 6.4, "Front Bezel"). 4. Disconnect the power and data cables from the back of the drive, as shown in the following illustrations. Disconnecting Optical Drive Cables Disconnecting Diskette Drive Cables Service Reference Guide, dx6100 361293-002 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 100
Removal and Replacement Procedures- Microtower (MT) Chassis Disconnecting Hard Drive Cables ✎ Some products use straight remove, then slide the drive from its drive bay 2. 6. Remove the four guide screws (two on each side) from the old drive. You will need these screws to install a new - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 101
Microtower (MT ✎ There are a total of eight extra guide screws on the front of the chassis. Four have U.S. threads and guide screws into the drive. 2. Align the guide screws with the guide slots, then slide the drive into the drive bay, making sure it is fully seated. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 102
Removal and Replacement Procedures- Microtower (MT) Chassis 3. Reconnect the power and data cables to the drive as shown in the following illustrations. ✎ Refer to Section 4.1, "SATA and PATA Device Information"for information on attaching the cabling to get optimum performance. Connecting Optical - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 103
"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. Follow the instructions in the guide included with the restore CD - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 104
the power cable that connects the chassis fan to the system board 1. 4. Remove the four screws from the rear of the chassis 2 that secure the fan. 5. Remove the fan from the chassis 3. To install the chassis fan, reverse the removal procedure. 6-24 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 105
: the power switch/LED cable, the front USB cable, and the front audio cable. 4. Remove the two screws 1 that secure the housing to the chassis and then pull the housing 2 away from the chassis. To install the housing assembly, reverse the removal procedures. Service Reference Guide, dx6100 361293 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 106
screws 1 that hold the USB and audio port assembly in place. 5. Remove the I/O device assembly from the I/O panel 2 by pushing it out of the housing. To install the I/O devices, reverse the removal procedures and then reinstall the housing assembly. 6-26 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 107
Microtower (MT) Chassis 6.13 Power Switch Assembly 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel assembly to the front of the chassis and reconnect the cables to the system board. Service Reference Guide, dx6100 361293-002 6-27 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 108
Microtower (MT) Chassis 6.14 Heatsink 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel "Access Panel"). 3. Disconnect the heatsink fan cable from the system board. 4. Disconnect the four-pin power cable Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 109
- Microtower (MT) Chassis 6.15 Processor 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the computer cover (Section 6.3, "Access Panel"). of the processor and install the heatsink atop the processor. Service Reference Guide, dx6100 361293-002 6-29 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 110
and Replacement Procedures- Microtower (MT) Chassis 5. Go update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system ROMPaq can be found on the Web at: http:\\h18000.www1.hp.com/support/files. 6-30 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 111
Microtower (MT) Chassis 6.16 System Board 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel the front of the chassis to remove it. To install the system board, reverse the removal procedures. Service Reference Guide, dx6100 361293-002 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 112
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: 6-32 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 113
or access panel (Section 6.3, "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, dx6100 361293-002 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 114
or access panel (Section 6.3, "Access Panel"). 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. 6-34 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 115
- Microtower (MT) Chassis 6.17.3 Type 3 panel (Section 6.3, "Access Panel"). 5. Plug in the computer and turn on power. 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, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 116
Removal and Replacement Procedures- Microtower (MT) Chassis 6.18 Speaker 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel and rotate the computer speaker, reverse the removal procedures. 6-36 361293-002 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 117
board is parallel to the table to make it easier to work on (Section 6.3, "Access Panel"). 3. Disconnect all power cables from the mass storage devices and from the system board. 4. Remove the screws that connect the power supply to the chassis 1. Service Reference Guide, dx6100 361293-002 6-37 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 118
- Microtower (MT) Chassis 5. Pull the power supply towards the front of the chassis while depressing the two sets of retaining clips 1 to allow the power supply to move far enough to lift it from the chassis 2. To install the power supply, reverse the removal procedure. 6-38 361293-002 Service - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 119
7 Removal and Replacement Procedures- Slim Tower (ST) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 120
Removal and Replacement Procedures- Slim Tower (ST) Chassis 8. Disconnect all peripheral device cables from the computer. ✎ During disassembly, label each cable as you remove and lengths; using the wrong screw in an application may damage the unit. 7-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 121
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.2 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 Library CD for more information about the Smart Cover Lock. If - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 122
Removal and Replacement Procedures- Slim Tower (ST) Chassis To reattach the Smart Cover Lock, position the lock with the tamper-proof screw. 7-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 123
- Slim Tower (ST) Chassis 7.3 Hood Sensor 1. Prepare the computer for disassembly. 2. Remove the computer cover. 3. Raise the power supply to its full upright position. 4. Disconnect the hood sensor cable from the system board. 5. Slide the hood sensor switch mounted on the power supply towards - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 124
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.4 External Security Devices 7.4.1 Security Clip A special clip is required to secure the computer from the computer to a fixed object. Insert the cable lock in the location shown below. 7-6 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 125
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.4.3 Padlock A padlock may be used by itself to secure the computer cover to the computer chassis. mouse cables through the lock. 2. Screw the lock to the chassis using the screw provided. Service Reference Guide, dx6100 361293-003 7-7 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 126
Removal and Replacement Procedures- Slim Tower (ST) Chassis 3. Insert the plug into the lock 1 and push the button in 2 to engage the lock. Use the key provided to disengage the lock. 7-8 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 127
Removal and Replacement Procedures- Slim Tower (ST) Chassis With Security Cable 1. Fasten the cable by looping it around a stationary object. 2. Thread the keyboard and mouse cables through the lock. Service Reference Guide, dx6100 361293-003 7-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 128
Procedures- Slim Tower (ST) Chassis 3. Screw the lock to the chassis using the screw provided. 4. Insert the plug end of the security cable into the lock 1 and push the button in 2 to engage the lock. Use the key provided to disengage the lock. 7-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 129
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.5 Computer Cover 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). Ä CAUTION: Before removing the computer cover, ensure that the computer is turned off and that the power cord is disconnected from the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 130
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.6 Front Drive Bezels 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2. Remove the computer cover (Section 7.5, "Computer Cover"). 3. Remove the drive bezel by pushing the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 131
Removal and Replacement Procedures- Slim Tower (ST) Chassis There are three available drive bezel inserts. Item 1 2 3 Description Diskette drive bezel Hard drive bezel 3.5" drive bezel Service Reference Guide, dx6100 361293-003 7-13 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 132
and Replacement Procedures- Slim Tower (ST) Chassis 7.7 Cable Management The Slim Tower chassis is a the drive cage, power supply, or computer cover to push cables down into the chassis. Always position the cables to lay properly by themselves. 7-14 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 133
Removal and Replacement Procedures- Slim Tower (ST) Chassis When removing the power supply power cables from the P1 or P3 connectors on the system board, always cable. Pulling on the cable could damage the cable and result in a failed power supply. Service Reference Guide, dx6100 361293-003 7-15 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 134
Removal and Replacement Procedures- Slim Tower (ST) 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 incompatible - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 135
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 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 136
and Replacement Procedures- Slim Tower (ST) Chassis 7.9 Vertically Oriented operating system, then turn off any external devices. 3. Disconnect the power cord from the power outlet and disconnect any external devices. 4. Remove the computer from the 7-18 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 137
Procedures- Slim Tower (ST) Chassis 7.9.2 PCI Expansion Card 1. If you have locked the Smart Cover Lock, restart the computer and enter Computer Setup to unlock the lock. 2. Turn off the computer properly through the operating system, then turn off any external devices. 3. Disconnect the power cord - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 138
Removal and Replacement Procedures- Slim Tower (ST) Chassis 9. Install the expansion card by sliding the card under the slot cover retention latch then pressing expansion card or slot cover for proper cooling of internal components during operation. 7-20 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 139
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.9.3 PCI Express Expansion system, then turn off any external devices. 3. Disconnect the power cord from the power outlet and disconnect any external devices. 4. Remove the computer cover . Service Reference Guide, dx6100 361293-003 7-21 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 140
Procedures- Slim Tower (ST) Chassis power cord from the power outlet and disconnect any external devices. 4. Remove the computer from the stand and lay the computer on its side. 5. Remove the computer cover. Refer to Section 7.5, "Computer Cover". 7-22 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 141
Removal and Replacement Procedures- Slim Tower (ST) Chassis 6. Remove the expansion card cage Section 7.10, "Horizontally Oriented Expansion Card". If you are firmly into the socket on the riser card. 14. Reinstall the card retaining screw. Service Reference Guide, dx6100 361293-003 7-23 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 142
Removal and Replacement Procedures- Slim Tower (ST) Chassis 15. Reinstall the expansion card cage by aligning the cage with the guide rails on the backwall. Press down firmly on the cage to secure it in place on the backwall. Be sure the riser card in the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 143
- Slim Tower (ST) Chassis 7.10.3 Riser Card 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2, "Unlocking the Smart Cover Lock"). 2. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 3. Remove the computer access panel - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 144
Slim Tower (ST) Chassis 7.11 Drives A Torx T-15 screwdriver is needed to remove and install the guide run the Restore Plus! CD to load the Compaq factory-installed type and size of the storage device installed in the computer, run Computer Setup. 7-26 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 145
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.11.2 Optical Drive Ä CAUTION: All removable located on the front of the chassis next to the drives 1. This disengages the drive cage. 5. Slide the drive cage forward until it stops 2. Service Reference Guide, dx6100 361293-003 7-27 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 146
Removal and Replacement Procedures- Slim Tower (ST) Chassis 6. Disconnect the power and data cables from the rear lock mechanism has been released. Ä CAUTION: Use only 3/16-inch or 5-mm screws as guide screws. Longer screws can damage the internal components of the drive. ✎ When replacing the drive - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 147
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.11.3 External drive. Refer to Section 7.11.2, "Optical Drive". 5. Disconnect the signal and power cables from the drive. The other end of the cables should remain connected drive rails. Service Reference Guide, dx6100 361293-003 7-29 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 148
the front of the chassis next to the optical drive 1 and slide the drive cage forward 2 to its fully extended position. This will give you access to the cable connectors on the primary hard drive. ✎ It is not necessary to remove the optical drive. 7-30 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 149
Removal and Replacement Procedures- Slim Tower (ST) Chassis 5. Remove the security clip that secures the backwall to the power supply. 6. Rotate the power supply to its full upright position. Service Reference Guide, dx6100 361293-003 7-31 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 150
Slim Tower (ST) Chassis 7. Disconnect the power cable and data cable from the back of the hard drive. 8. Pull the tab that locks the drive in place away from the drive 1, slide the hard drive toward the front any hard drive performance problems. 7-32 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 151
Removal and Replacement Procedures- Slim Tower (ST) Chassis ✎ 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. You will need a Torx T-15 screwdriver to remove and re-install the guide screws. HP has provided four - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 152
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.12 Fan Shroud 1. Prepare the computer for disassembly (Section 7.1, " replacing the shroud, make sure that it does not get caught on the wires from either the fan or the speaker. 7-34 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 153
flatten the cable in the cable retaining clip areas to make the cable more flexible. 6. Remove the power supply cable that is routed under the green leg of the drive cage 3. ✎ It may be necessary to flatten the cable to make the cable more flexible. Service Reference Guide, dx6100 361293-003 7-35 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 154
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7. Remove the SATA cable from the front and side retaining clips. 8. Push the empty drive cage back into its locked position. Ä CAUTION: Make sure the flat ribbon cables are folded down and the SATA and power cables are pushed out of the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 155
and Replacement Procedures- Slim Tower (ST) Chassis 9. Remove the two screws that secure the front I/O device 1 then, push the I/O device towards the back of the chassis 2. 10. Pull the drive cage forward, grasp the I/O device and carefully pull it from under the drive cage 3. Guide the cable ends - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 156
Removal and Replacement Procedures- Slim Tower (ST) Chassis Follow these procedures for reinstalling the front I/O device. 1. Begin with the drive cage in its fully extended position. Guide the I/O device cables under the drive cage and through the legs of the drive cage support 1. It may be - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 157
two LEDs out of the chassis 3. 5. If necessary, the LED holders may also be removed by squeezing the clips and pushing them out of the front of the chassis 4. To install the power switch and LEDs, reverse the removal procedure. Service Reference Guide, dx6100 361293-003 7-39 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 158
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.15 Heatsink 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2. Remove the computer cover ( any damage to them may require replacing the system board. 7-40 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 159
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.16 Processor 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2. Remove the bottom of the heatsink with the alcohol pad provided in the spares kit. Service Reference Guide, dx6100 361293-003 7-41 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 160
Replacement Procedures- Slim Tower (ST) Chassis 4. Apply update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system ROMPaq can be found on the Web at: http:\\h18000.www1.hp.com/support/files. 7-42 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 161
- Slim Tower (ST) 15, "Heatsink"). 5. Remove any memory modules that might interfere with the supplied in the speaker spares kit. After the alcohol has evaporated, apply thermal grease to the top of the processor from the syringe supplied in the speaker spares kit. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 162
cage and from the clip on the side of the chassis in front of the hard drive (Section 7.12, "Fan Shroud"). 8. Disconnect the hood sensor from the system board and remove the sensor from the power supply if required (Section 7.3, "Hood Sensor"). 7-44 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 163
Removal and Replacement Procedures- Slim Tower (ST) Chassis 9. Lift the power supply up and out of the chassis. To install the power supply, reverse the removal procedure. Ä CAUTION: When installing the power supply cables, make sure they are properly positioned so they are not cut by the drive cage - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 164
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.19 System Board 1. Prepare the computer for disassembly (Section Slide the drive tray forward and disconnect the drive and power cables from the system board. 6. Remove the security clip. 7-46 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 165
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7. Rotate the power supply to its upright position. 8. Disconnect the serial port from the system board 9. Disconnect the balance of the cables from the system board. Service Reference Guide, dx6100 361293-003 7-47 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 166
Removal and Replacement Procedures- Slim Tower (ST) Chassis 10. Remove the heatsink from the system board and the system board tray (Section 7.15, "Heatsink"). 11. Remove the long mounting screw that secures the system board tray to the chassis. 7-48 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 167
Removal and Replacement Procedures- Slim Tower (ST) Chassis 12. Slide the system board tray assembly towards the front of the chassis, about 1/4 inch and lift the system board the system board and the green handle is at the front of the board. Service Reference Guide, dx6100 361293-003 7-49 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 168
the cables it is important that they be positioned so they do not interfere with the sliding of the drive cage the rotation of the power supply Complete the installation of the system board by reconnecting all cables. 7-50 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 169
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.20 Chassis Fan 1. Prepare the computer for disassembly (Section 7.1, "Preparation for Disassembly"). 2. Remove the the chassis. . To install the chassis fan, reverse the removal procedure. Service Reference Guide, dx6100 361293-003 7-51 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 170
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7.21 Backwall 1. Prepare the power supply from the chassis (Section 7.18, "Power Supply"). 7. Disconnect all data and power cables from the system board except the cable to the heatsink. 7-52 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 171
Removal and Replacement Procedures- Slim Tower (ST) Chassis 8. Disconnect the "Serial A" cable 1 from the system board, remove the two screws 2 that Shroud"). 10. Remove the long mounting screw that secures the system board tray to the chassis. Service Reference Guide, dx6100 361293-003 7-53 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 172
Removal and Replacement Procedures- Slim Tower (ST) Chassis 11. Slide the system board tray assembly towards the front of the chassis, about 7 mm (1/4-inch) and lift a few millimeters/inches toward the space vacated by the power supply and lift out. 7-54 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 173
Removal and Replacement Procedures- Slim Tower (ST) Chassis 13. Slide the new backwall 1 onto the rear chassis. Secure it with the three screws 2 removed system board is in position, replace the long screw to secure the system board to the chassis. Service Reference Guide, dx6100 361293-003 7-55 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 174
- Slim Tower (ST) Chassis 16. Reconnect all power and data cables to the system board. Be sure to use proper cable handling and placement precautions. 17. Install the power supply. Rotate Overbending, creasing, or pinching can damage cables. 7-56 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 175
Replacement Procedures- Slim Tower (ST) Chassis 21. Replace the fan shroud on top of the fan. 22. Replace the computer access panel. 23. Connect the power cord to the computer and electrical outlet. 24. Connect any peripheral equipment to the computer. Service Reference Guide, dx6100 361293-003 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 176
and Replacement Procedures- Slim Tower (ST) Chassis 7.22 Battery The battery that comes with this computer provides power to the real- on the type of battery holder on your system board, complete the following instructions to replace the battery: 7-58 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 177
Replace the computer cover or 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, dx6100 361293-003 7-59 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 178
- Slim Tower (ST) Chassis 7.22.2 Type 2 panel. 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. 7-60 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 179
Procedures- Slim Tower (ST) Chassis 7.22.3 Type 3 Battery panel. 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, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 180
Removal and Replacement Procedures- Slim Tower (ST) Chassis 7-62 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 181
connectors. Some of these connectors may not be used on the product being serviced. Keyboard Connector and Icon Pin Signal 1 Data 2 Unused 3 Ground 4 Unused Ethernet BNC Connector and Icon Pin 1 (Center) 2 (Shield) Signal Data Ground Service Reference Guide, dx6100 361293-003 A-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 182
AUI Differential Receive Pin Signal 9 Positive AUI Differential Receive 10 +12V 11 Ground 12 Ground 13 Unused 14 Unused 15 Unused 16 Unused A-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 183
to Send Clear to Send Ring Indicator (5V if powered) USB Connector and Icon Pin Signal 1 +5 VDC 2 - Data 3 + Data 4 Ground Microphone Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio Power Ground Service Reference Guide, dx6100 361293-003 A-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 184
) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_In_Left Audio_In_Right Ground Line-Out Audio Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal 60 -MSG 61 -SEL 62 -C/D 63 -REQ 64 -I/O 65 -D 66 -D 67 -D 68 -D A-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 185
Pin Signal 1 Red Analog 2 Green Analog 3 Blue Analog 4 Not used 5 Ground Pin Signal 6 Ground 7 Ground 8 Ground 9 +5V (fused) 10 Ground Pin Signal 11 Not used 12 DDC Serial Data 13 Horizontal Sync 14 Vertical Sync 15 DDC Serial Clock Service Reference Guide, dx6100 361293-003 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 186
A_GROUND_I 63 FP16 47 audio_r 64 FP17 48 FP01 65 FP18 49 FP02 66 FP19 50 FP03 51 FP04 67 FP20 68 FP21 A-6 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 187
12 Fan-CMD 4-Pin Power (for CPU) Connector and Icon 1 Pin Signal 13 +12 V 14 +5 V Sense 15 GND 16 +5 V 17 +5 V 18 +3.3 V Pin Signal 1 GND 2 GND 3 +12 V CPU 4 -12 V CPU Pin Signal 19 GND 20 +3.3 Sense 21 +3.3 V 22 +3.3 V 23 GND 24 -12 V Service Reference Guide, dx6100 361293-003 A-7 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 188
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 A-8 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 189
GND 24 GND 25 PERp2 46 GND 47 PERp7 48 PERn7 49 GND 50 RSVD 71 GND 72 PERp13 73 PERn13 74 GND 75 GND Service Reference Guide, dx6100 361293-003 A-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 190
25 GND 46 PETn7 47 GND 48 PRSNT2# 49 GND 50 PETp8 71 PETn13 72 GND 73 GND 74 PETp14 75 PETn14 A-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 191
power cord set requirements, contact your authorized HP dealer, reseller, or service power system. 4. The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector, for mating with appliance inlet on the Switch Box. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 192
specific be Type HO5VV-F, 3-conductor, 1.0 mm2 conductor size. Power cord set Type VCT or VCTF, 3-conductor, 1.0 mm2 conductor size. Wall plug must be a two-pole grounding type with a Japanese Industrial Standard C8303 (7A, 125V) configuration. B-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 193
Top of Memory setting in Computer Setup. Run Computer Setup (F10 Setup) and check configuration of Onboard Devices. Set the date and time under Control Panel or in F10 Setup depending on the operating system. If the problem persists, replace the RTC battery. Service Reference Guide, dx6100 361293 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 194
is incompatible with the chipset. Populated DIMM configuration is not optimized. Recently added memory module(s) support ECC memory error correction. Recommended Action Set the date and time under Control Panel or in F10 Setup depending on the operating system. If the problem persists, replace the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 195
. Replace chassis, rear chassis, or front chassis fan. Reseat CPU or chassis fan. Reseat fan cable. Replace CPU or chassis fan. Run Computer Setup (F10 Setup). Check and/or replace cables. Clear CMOS. Replace diskette drive. Replace the system board. Service Reference Guide, dx6100 361293-003 C-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 196
applies to the PCI Express Graphics slot using Intel 9X1 Express chipsets. This slot supports x1 and x16 (PCI Express Link Width cards) only. If a x4 or x8 card is used, system BIOS will attempt to retrain to a x1. If this fails, the 921 error message will be displayed. 1720-SMART Hard Drive Detect - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 197
that the MBR change is unintentional and undesired (e.g. due to a virus), run Computer Setup and restore the previously saved MBR copy. Otherwise, run Computer Setup and either disable MBR security or save the MBR of the current bootable disk. Service Reference Guide, dx6100 361293-003 C-5 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 198
Check 2. Parity RAM failure. Recommended Action Run Computer Setup and either disable MBR security or save the MBR of the current bootable disk. 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 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 199
until corrective action is taken. POST Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. None Computer on. None Green Power LED flashes every two seconds. None Computer in Suspend to RAM mode (select models only) or normal - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 200
two second pause. Red Power LED flashes seven times, once every second, followed by a two second pause. Red Power LED flashes eight times, once every second, followed by a two second pause. Beeps 4 5 6 7 8 Possible Cause Power failure (power supply is overloaded). Pre-video memory error. Pre-video - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 201
board. Check to see if the 3V_aux light on the system board is turned on. If it is turned on, then replace the power button harness. If the 3V_aux light on the system board is not turned on, then replace the power supply. Replace the system board. Service Reference Guide, dx6100 361293-003 C-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 202
C-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 203
troubleshooting power light illuminated? ■ Is the monitor turned on? ■ Is the green monitor light illuminated any key. If the system beeps, then the keyboard is operating necessary device drivers installed? ■ Have all printer drivers been installed for Service Reference Guide, dx6100 361293-003 D-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 204
and time under Control Panel. 2. Replace the RTC battery. Computer appears to pause periodically. Network driver is loaded and no network connection is established. Establish a network connection, or use Computer Setup or Microsoft Windows Device Manager to disable the network controller. Cursor - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 205
powered off automatically and the Power LED flashes Red two times, once every second, followed by a two second pause, and the computer beeps two times. Beeps continue for five iterations after which the LED flashes will continue until the problem . Service Reference Guide, dx6100 361293-003 D-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 206
are properly connected to the system board. 4. If the 5 V_aux light on the system board is on, then replace the power button harness. 5. If the 5 V_aux light on the system board is off, then replace the power supply. 6. Replace the system board. D-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 207
the processor. Power LED flashes Red, four times, once every second, followed by a two second pause, and the computer beeps four times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Power failure (power supply is overloaded). Solution - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 208
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. Push in drive button. Check the program diskettes. Reconnect power the storage security feature disabled settings. Replace the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 209
. Use Computer Setup to check the storage security feature disabled settings. In Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now. Format the diskette. Check the type of drive that you are using and use the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 210
a drive. Select File > Properties > Tools. Under Error-checking, click Check Now. In Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now. Check cable connections. D-8 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 211
, the hard drive cannot be accessed. Replace the MBR image. 3. If the hard drive is still inaccessible and MBR Security is enabled, try restoring the previously saved MBR image by entering Setup and selecting Security > Restore Master Boot Record. Service Reference Guide, dx6100 361293-003 D-9 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 212
lights on the front of the computer. See Appendix C "POST Error Messages". 1. Attempt the normal Windows "Shut Down" procedure. 2. Press the power button for four or more seconds to turn off the power. 3. Restart the computer using the power button. D-10 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 213
Computer Setup. Solution Shut down Windows and turn off the computer. Insert the drive into the MultiBay, if it is not already inserted. Turn on the computer. Enter Computer Setup and set MultiBay to Device Available in Security > Device Security. Service Reference Guide, dx6100 361293-003 D-11 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 214
right corner of the screen. 2. Using the keyboard arrow keys, select Enable VGA Mode and press Enter. 3. In Windows Control Panel, double-click the Display icon and select the Settings tab. 4. Use the sliding control to reset the resolution. D-12 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 215
five times, once every second, followed by a two second pause, and the computer beeps five times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Power LED flashes Red six times, once every second, followed by a two second pause, and the - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 216
menu. 2. Manually synchronize the Clock and Clock Phase on-screen display functions. Download SoftPaq SP20930 or SP22333, depending on the monitor, to assist with the synchronization. 1. Reseat the graphics card. 2. Replace the graphics card. D-14 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 217
Problem Certain typed symbols do not appear correct. Cause The font you are using does not support that particular audio for this CD-ROM device is selected. Turn on and use headphones or external speakers, if connected, or disconnect headphones or external speakers. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 218
Audio Problems (Continued) Problem Cause Solution Volume is muted. 1. From the Control Panel program, click Sound, Speech and Audio Devices, then click Sounds and Audio Devices. 2. Click the Mute check box to remove the check mark from the box. Computer is in standby mode. Press the power - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 219
self-test. Reconnect all cables. Install the correct printer driver for the application. Reconnect all cables. Reset the printer by turning it off for one minute, then turn it back on. 1. Check the paper tray and refill if empty. 2. Select online. Service Reference Guide, dx6100 361293-003 D-17 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 220
Problems Solving Keyboard and Mouse Problems Problem Cause Solution Keyboard commands and typing , power supply, transformer, computer, other electrical device, or power cords light should not be on if you want to use the arrow keys. The NumLock key can be disabled Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 221
Problems Problem Cause Solution Mouse does not respond to movement or is too slow. (continued) Computer is in standby mode. Press the power from a telephone, power supply, transformer, computer, other electrical device, or power cords or cables. Service Reference Guide, dx6100 361293-003 D-19 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 222
with the system to determine if you are using the correct memory modules and to verify the proper installation. 2. Observe the beeps and LED lights on the front of the computer. See Appendix C, "POST Error Messages" to determine possible causes. D-20 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 223
3. Replace third-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 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 224
network cabling. Solving Network Problems Problem Cause Wake-on-LAN feature is not functioning. Wake-on-LAN is not enabled. Network driver does not detect network controller. Network controller is disabled. Incorrect network driver. Network status link light Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 225
resource settings for the board. Reinstall the network drivers, using the Restore Plus! CD. Ensure that both ends Network Connectivity, that a DHCP Server is present, and that the Remote System Installation Server contains the NIC drivers for your NIC. Flash the ROM. Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 226
error. Memory count during POST is wrong. Insufficient memory error during operation. Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. Beeps continue for five iterations after which the LED flashes will continue until the problem - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 227
Power LED flashes Red three times, once every second, followed by a two second pause, and the computer beeps three times. Beeps continue for five iterations after which the LED flashes will continue until the problem present. 2. Reseat the processor. Service Reference Guide, dx6100 361293-003 D-25 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 228
CD in the drive. Run Computer Setup and disable Network Server Mode in Security > Password Options. Run Computer Setup and change boot sequence in Storage > Boot Order. 1. Reconnect power and data cables to the drive. 2. Install correct device driver. See the documentation that came with the DVD - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 229
computer. 2. Reconnect the device to the front of the workstation and restart the computer. The device does not have power. If the USB device requires AC power, be sure one end is connected to the device and one end is connected to a live outlet. Service Reference Guide, dx6100 361293-003 D-27 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 230
will be on.) Connect the CAT5 10/100 cable between the cable modem and the computers's RJ-45 connector. (If the connection is good, the PC LED light on the front of the cable/DSL modem will be on.) Contact the ISP for the correct IP address. D-28 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 231
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 If there are further problems, click Troubleshoot and follow the on-screen instructions. Service Reference Guide, dx6100 361293-003 D-29 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 232
Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Green Power LED On. None Computer on. None Green Power LED flashes every two seconds. None Computer in Suspend to RAM authorized reseller or service provider. D-30 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 233
Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes three times, once every second, followed by a two second pause and the computer beeps three times. Beeps stop after fifth iteration but LEDs continue until problem is - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 234
Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes six times, once every second, followed by a two second pause and the computer beeps six times. Beeps stop after fifth iteration but LEDs continue until problem is - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 235
Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes ten times, once every second, followed by a two second pause and the computer beeps ten times. Beeps stop after fifth iteration but LEDs continue until problem is - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 236
D-34 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 237
Designators These reference designators are used on most but not all HP system and riser boards. Designator BAT CR1 CR2 CR3 CR4 CR35 to power supply) Mouse connector, PS/2 Double-stacked mouse/keyboard connector, PS/2 Top = Mouse, Bottom = Keyboard Service Reference Guide, dx6100 361293-003 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 238
AUI connector Fan command/fan sink header (may be 2 or 4 pin) Primary IDE connector Secondary IDE/MultiBay connector Header for NEWCARD Header for front panel audio Header for front panel USB Internal USB connector 1 Internal USB connector 2 E-2 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 239
PC graphics connector (outboard) Blade PC graphics CPU) fan header for fansink Secondary CPU Audio Codec Audio amplifier LOM2 LOM2 EEPROM LOM2 PHY Fan controller TMDS controller Parallel port diode array First serial port transceiver Second serial port transceiver Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 240
Following memory slots Primary processor socket Secondary processor socket ROM socket (XU15) Primary (TH) system clock crystal Secondary (SMT) system clock crystal Primary NIC clock crystal Secondary NIC clock crystal RTC clock crystal/tie-down E-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 241
will run at the highest supported memory speed. For example, if a 400 MHz DIMM is paired with a 533 MHz processor bus, the system will run at 400 MHz, the highest supported memory speed. ✎ The system will not start if you install unsupported DIMMs. Service Reference Guide, dx6100 361293-003 F-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 242
supported DIMM Sockets There are four DIMM sockets on the system board, with two sockets per channel. The sockets are labeled XMM1, XMM2, XMM3, and XMM4. Sockets XMM1 and XMM2 operate in memory channel A. Sockets XMM3 and XMM4 operate in memory channel B. F-2 361293-003 Service Reference Guide - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 243
system will operate in dual channel Asymmetric mode if the total memory capacity of the DIMMs in Channel A is not equal to the total memory capacity of the DIMMs in Channel B. ■ The system will system will run at the slower of the two speeds. Service Reference Guide, dx6100 361293-003 F-3 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 244
F-4 361293-003 Service Reference Guide, dx6100 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 245
pin assignments A-1 to A-7 country-specific power cord set requirements B-2 D date and time display D-2 DDR memory F-1 DDR2 memory F-2 device drivers installing/upgrading 1-1 Diagnostics for Windows categories 2-16 detecting 2-15 installing 2-15 Service Reference Guide, dx6100 361293-003 Index-1 - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 246
, power supply 5-7 FAT or FAT32 to NTFS conversion 1-2 file, Computer Setup heading 2-4 flashing LEDs C-7 front bezel MT removal and replacement 6-5 front drive bezel ST removal and replacement 7-12 front I/O devices MT removal and replacement 6-26 ST removal and replacement 7-35 front I/O panel MT - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 247
PS/2 keyboard C-7 line-in audio pin assignments A-4 line-out audio pin assignments A-4 M memory DDR F-1 DDR2 F-2 MT removal and replacement 6-10 ST removal and replacement 7-16 menu bar, Diagnostics for Windows 2-16 microphone pin assignments A-3 microtower. See MT monitor blank screen D-12 blurry - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 248
(POST) 2-1 problems, solving audio D-15 CD-ROM and DVD D-26 diskette D-6 display D-12 drive key D-27 front panel components D-27 hard drive D-8 hardware installation D-20 Internet access D-28 keyboard D-18 memory D-24 mouse D-18 MultiBay D-11 network D-22 optical drives D-26 power supply D-5 printer - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 249
dynamic random access memory) F-1 security Computer Setup heading 2-7 MT 6-2 ST 7-6 security features mechanical 3-16 Setup (F10) 3-13 serial interface pin assignments A-3 service considerations 5-7 setup software 1-2 windows 1-1 Slim Tower. See ST Smart Cover Lock ST removal and replacement - HP dx6120 | HP Business Desktop dx6100 Series Personal Computers Service Referen - Page 250
3-25 HP 1-1, 1-3 HPQFlash 3-5 PC Deployment 3-1 Remote ROM Flash 3-4 replicating setup, BIOS utility 3-8 ROM Flash 3-4 software downloads 2-15 support software 3-12 support software CD subscription 1-1 wrench, tamper-resistant 5-7 ST 7-3 Index-6 361293-003 Service Reference Guide, dx6100
service reference guide
HP Compaq Business Desktop dx6100 Series
3rd Edition
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, SATA drives, safety, routine care, connector pin assignments, POST
error messages, and diagnostic indicator lights.
Document Part Number 361293-003