HP dx2700 Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu
HP dx2700 - Microtower PC Manual
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- HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 1
service reference guide HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs 1st Edition This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, SATA drives, safety, routine care, connector pin - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 2
Service Reference Guide HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs 1st Edition Document Part Number: 431672-001 September 2006 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 3
of life. Ä CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information. Service Reference Guide HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Business PCs First Edition (September 2006) Document Part Number: 431672-001 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 4
Microsoft Windows XP/Redflag Linux 1-1 1.1.1 Installing or Upgrading Device Drivers (Only applicable for Windows OS 1-1 1.2 Converting to NTFS (Associated with WinXP OS 1-2 1.2.1 Windows XP Home and XP Professional 1-2 1.3 HP Software 1-2 2 Setup Utilities and Diagnostics Features 2.1 Power-On - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 5
Access Panel and Front Bezel (SFF chassis 6-4 6.3 Using the Small Form Factor Computer in a Minitower Configuration 6-6 6.4 Front Drive Bezels 6-7 6.4.1 Removing a 5.25" Drive Bezel Blank/MT Chassis 6-7 6.5 Memory 6-8 6.5.1 Installing Memory Modules/MT chassis 6-8 6.5.2 Installing DDR2-SDRAM - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 6
- MT chassis 6-28 6.12 Processor 6-29 6.13 System Board 6-31 6.14 Battery 6-32 6.14.1 Battery Holder 6-33 6.15 Power Supply 6-34 A Connector Pin Assignments B Power Cord Set Requirements C POST Error Messages D Troubleshooting Without Diagnostics E Memory Service Reference Guide 431672 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 7
is completed, you must install the device drivers for the device you are installing. The I386 directory and its subdirectories provide the HP- or Compaq-specific integration of the operating system for the computer model and include device drivers supported by the operating system. When prompted - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 8
drive to NTFS. 1.3 HP Software The Microsoft Windows XP Home or Windows XP Professional operating system is preinstalled on the computer and will be configured automatically the first time the computer is turned on. All other software is user-installed. Certain drivers and utilities are available - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 9
. ■ Determine if all of the devices installed on the computer are recognized by the system and functioning properly. ■ Determine information about the operating environment of the computer. ■ Solve system configuration errors detected but not automatically fixed during the Power-On Self-Test (POST - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 10
, change, or verify the system configuration including settings for processor, graphics, memory, audio, storage, communications, and input devices. ■ Modify the boot order of bootable devices such as hard drives, diskette drives, optical drives, USB devices. ■ Configure the boot priority of IDE (ATA - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 11
, Advanced BIOS Features, Advanced Chipset Features, Integrated Peripherals, Power Management Setup, PnP/PCI Configurations, PC Health Status Exit Setup after resetting the defaults. Ä CAUTION: Do NOT turn the computer power OFF while the ROM is saving your F10 Computer Setup changes because the CMOS - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 12
Time Floppy Drive A Allows you to set system date. Allows you to set system time. Allows you to set Drive A to None or 1.44M, 3.5 inch. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-4 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 13
• All Errors • No Errors • All but Keyboard • All but Diskette • All but Disk/Key Advanced Quick Power On Self Test BIOS Features Disables • 10 Sec • 15 Sec ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide 431672-001 2-5 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 14
Option Description Advanced BIOS Features (continued) Hard Disk Boot Priority Allows you to specify the order of attached hard drive devices (such as Setup. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-6 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 15
you to set memory size to: • 128MB • 256MB • MAX. Init Display First (VGA Setting) Allows you to set system display priority: • PCI Slot • Onboard • PCIEx* ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide 431672-001 2-7 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 16
Mode Use DMA If Parallel Port Mode is set to ECP or ECP+EPP, allows you to set the ECP Mode Use DMA to 1 or 3. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-8 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 17
and Plug-and-Play-compatible devices. If you choose Auto, you cannot select IRQ, DMA and memory base address fields since BIOS automatically assigns them. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide 431672-001 2-9 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 18
15 assigned to When resources are controlled manually, allows you to assign each system interrupt a type, depending on the type of device using the interrupt. Legacy ISA for devices compliant with the original PC AT bus specification, PCI/ISA PnP for devices compliant with the Plug-andPlay standard - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 19
utility firmware can be found at http://www.hp.com under the Software & Driver Downloads for your specific model. Download the firmware files into a folder on a removable storage device. It is recommended that you save any modified computer configuration settings to a diskette, a USB flash media - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 20
ROM from being unintentionally updated or overwritten. This is important to ensure the operating integrity of the computer. Should you need or want to upgrade the BIOS, you may download the latest BIOS images from the HP driver and support page: http://www.hp.com/support. Ä CAUTION: For maximum ROM - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 21
off. 4. Remove the removable media used to upgrade the BIOS. 5. Turn the power on to restart the computer. 3.2.2 Dual-State Power Button With Advanced Configuration and Power Interface (ACPI) enabled for Windows XP, the power button can function either as an on/off switch or as a suspend button - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 22
all features are supported and functioning properly. HP has made the task of locating, accessing, evaluating, and installing the latest support software easier. You can download the software from http://www.hp.com/support. The Web site contains the latest device drivers, utilities, and flashable - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 23
instructions on the screen. 4. Before exiting, click Save and Exit Setup. Entering a User Password To enter a user password, complete the following steps: 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. 2. When the key icon appears on the monitor, type - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 24
Desktop restart the computer. If you are in Windows, click Start > Shut Down > Restart a Keyboard Error message-disregard it. 3. When the key icon appears, type your current power-on password and setup password may also be changed using the Security options in Computer Setup. Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 25
power supply provides greater reliability when the computer is hit with an unpredictable power surge. This power supply is rated to withstand a power surge of up to 1800 volts within minimum 3 seconds without incurring any system downtime or data loss. 3-6 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 26
Features ✎ Serial ATA = SATA HP does not support the use of a PATA (IDE) hard drive / optical drive on these models of computer. 4.1 SATA 1.5 and 3.0 Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 27
V3.3 3.3 V power P3 V3.3 3.3 V power P4 Ground P5 Ground P6 Ground P7 V5 5 V power P8 V5 5 V power Pin Usage Notes P9 V5 5 V power P10 Ground P11 Ground P12 Ground P13 V 12 12 V power P14 V12 12 V power P15 V12 12 V power 4-2 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 28
the HP Personal Computers have built-in drive failure prediction that warns the user or network Type ATA ATA Operating System Windows 2000/ XP Windows NT/2000/XP Maximum Size Partition 32 GB 2 TB Drive 128 PB 128 PB 4.5 SATA BIOS Windows 2000, XP, and Linux Enhanced Mode (default BIOS - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 29
: 376h ❏ IRQ: 15 4.5.2 Native Mode The native mode is used to access devices attached to additional SATA controllers and is not supported by many legacy operating systems. Addresses are assigned by PCI Plug-n-Play BIOS and the IRQ is shared with multiple controllers. Base Address Registers for the - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 30
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)/Small Form Factor (SFF) dx2700 MT Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 31
Identifying the Chassis, Routine Care, and Disassembly Preparation dx2708 MT dx2700SFF Note: dx2708 MT is only for China Market. 5-2 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 32
cases, the discharge contains enough power to alter device parameters or melt silicon junctions. 5.2.1 Generating Static The following table shows that: ■ Different activities their containers until they arrive at static-free stations. ■ Place items on a Service Reference Guide 431672-001 5-3 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 33
can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats by the case or PCB laminate. Handle them only at static-free work areas. ■ Turn off power and input service kits 5-4 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 34
. 5.3.2 Cleaning the Computer Case Follow all safety precautions in case, follow the procedures described below: ■ To remove light stains or dirt, use plain water with a clean, lint-free cleaning, always wipe the unit with a clean, lint-free cloth. ■ Occasionally clean the air vents on the computer - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 35
damage to the keys. This tool is available through many electronic supply outlets. Ä CAUTION: Never remove a wide leveled key (like "Cleaning the Computer Case." 5.3.5 Cleaning the Mouse Before cleaning the mouse, ensure that the power to the computer Case." 5-6 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 36
service the computer, you need the following: ■ Torx T-15 screwdriver (Compaq screwdriver with bits, PN 161946-001) ■ Torx T-15 screwdriver with small reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly Service Reference Guide 431672-001 5-7 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 37
whenever possible. In all cases, avoid bending or twisting CAUTION: When servicing this computer, ensure 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 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 38
Microtower (MT)/Small Form Factor (SFF) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service power-on state, voltage is always present on the system board as long as the system is plugged into an active Service Reference Guide 431672-001 6-1 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 39
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.2 Remove the computer access panel and front bezel (MT chassis and SFF chassis) 6.2.1 Access Panel (MT Chassis) 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). Ä CAUTION: - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 40
Microtower (MT)/Small Form Factor (SFF) Chassis 6.2.2 Front Bezel (MT Chassis) 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.2.1, "Access Panel (MT models and countries only. Service Reference Guide 431672-001 6-3 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 41
Microtower (MT)/Small Form Factor (SFF) Chassis 6.2.3 Removing the Computer Access Panel and Front Bezel (SFF chassis) To remove the computer access panel: 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 42
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 4. To remove the front bezel, gently pull up all three tabs 1 on the top of the bezel, rotate the front bezel forward to snap the three tabs on the top of the bezel in place. Service Reference Guide 431672-001 6-5 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 43
- Microtower (MT)/Small Form Factor (SFF) Chassis 6.3 Using the Small Form Factor Computer in a Minitower Configuration The Small Form Factor computer can be used in either a minitower or desktop configuration. To use it in the minitower configuration, you must purchase a tower stand from HP - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 44
Microtower (MT)/Small Form Factor (SFF) Chassis 6.4 Front Drive Bezels 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel and the front bezel - MT (Section 6.2.1, "Access Panel (MT into place. Service Reference Guide 431672-001 6-7 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 45
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.5 Memory For more information on the memory in this series of computers, refer to Appendix E, "Memory." 6.5.1 Installing Memory Modules/MT chassis Ä CAUTION: The memory module sockets have gold metal contacts. When - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 46
Microtower (MT)/Small Form Factor (SFF) Chassis ✎ A memory module can be installed in only one way. Match the notch on the module with the tab on the memory devices. 2. Disconnect the power cord from the power outlet and disconnect any external devices. Service Reference Guide 431672-001 6-9 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 47
Microtower (MT)/Small Form Factor (SFF) Chassis 5. Locate the memory module sockets. Å WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching. 6. Open both latches of the memory a DIMM of equal memory capacity into the XMM3 or - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 48
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.6 Expansion Cards 6.6.1 each end and carefully rock it back and forth until the connectors pull free from the socket. Be sure not to scrape the card against other 10. Service Reference Guide 431672-001 6-11 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 49
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis To install an expansion card in an empty slot continue with step 9. 9. With the external cables to the installed card, if needed. Reconfigure the computer, if necessary. 6-12 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 50
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.6.3 Installing an Expansion Card The computer has four PCI expansion slots. Each slot can accommodate a half-height PCI or PCI Express expansion card up to 6.6 inches (16.764 cm) in length. ✎ You can install a PCI card or a PCI Express - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 51
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 7. Install the expansion card by carefully placing the expansion card under the slot cover a piece of duct tape) for proper cooling of internal components during operation.) 6-14 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 52
Microtower (MT)/Small Form Factor (SFF) Chassis 6.6.4 Removing an Expansion Card To remove an expansion card: 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power . Service Reference Guide 431672-001 6-15 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 53
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.7 Cable Management Always follow good cable management practices when working inside . Pulling on the cable could damage the cable and result in a failed power supply. 6-16 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 54
- Microtower (MT)/Small Form Factor (SFF) Chassis 6.8 Drives The computer supports up to four 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 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 55
- Microtower (MT)/Small Form Factor (SFF) Chassis illustrations. 4. Remove all the screws that secures the drives in the drive bay. Slide the drive disk forward and out of the bay. * * These apply for selected models and countries only. Removing the Drives 6-18 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 56
Microtower (MT)/Small Form Factor (SFF) Chassis 5. Hard disk is inserted or slide out from the back. * * * These apply for selected models and countries only. Removing the Hard disk 6. Remove one guide Drive Positions - SFF chassis Desktop Drive Positions Service Reference Guide 431672-001 6-19 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 57
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 1 3.5-inch drive bay (1.44-MB diskette drive shown)* 2 5.25-inch drive bay for optional drives 3 3.5-inch, internal, standard hard drive bay *If the computer has a 1.44-MB diskette drive installed, it will be configured with a diskette - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 58
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 7. Remove the screws 1 that secure Floppy drive and Optical drive. Removing the Optical Drive or Diskette Drive To replace the drive, reverse the removal - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 59
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis Installing Guide Screws in the Optical Drive 3. Position the guide screws on the drive into the J-slots in the drive bay 1. Then, slide the drive toward the rear of the computer 2. Installing the Optical Drive ✎ - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 60
Microtower (MT)/Small Form Factor (SFF) Chassis 4. Raise the Easy Access drive bay to the upright position and connect the flat ribbon cable and audio cable to the system board. Connecting the Flat Ribbon Cable and Audio Cable 5. Connect the power . Ä CAUTION: When servicing the computer, ensure that - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 61
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.8.6 Upgrading the Hard Drive - SFF chassis Removing and Replacing the Hard Drive ✎ Only a serial advanced technology attachment (SATA) hard drive can be installed on this computer. ✎ Make sure to back - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 62
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6. Remove the screw 1. 7. Slide the drive to the right of the bay 2. Removing the Hard Drive 8. To install a hard drive, reverse the above procedure. 9. Connect the power cable 1 and data cable 2 to the hard drive. - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 63
Microtower (MT)/Small Form Factor (SFF) Chassis 6.9 Front I/O Panel Housing Assembly - MT Disassembly"). 3. Disconnect two attaching cables from the system board: the power switch/LED cable, and the front USB cable. 4. Remove the SFF is similar to MT. 6-26 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 64
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.10 System Fan 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.2, "Remove the computer access panel and front bezel (MT chassis and SFF chassis)"). 3. Disconnect - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 65
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.11 Heatsink - MT chassis 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.2, "Remove the computer access panel and front bezel (MT chassis and SFF chassis - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 66
Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.12 Processor 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel cover (Section 6.2, "Remove the computer access panel and front bezel (MT chassis and SFF chassis - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 67
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 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 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 68
Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.13 System Board 1. Prepare the computer for disassembly (Section 6.1, "Preparation for Disassembly"). 2. Remove the access panel (Section 6.2, "Remove the computer access panel and front bezel (MT chassis and SFF chassis)"). 3. Remove - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 69
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.14 Battery The battery that comes with your computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 70
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.14.1 Battery Holder 1. To the battery. 3. Replace the computer access panel. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 71
Removal and Replacement Procedures- Microtower (MT)/Small Form Factor (SFF) Chassis 6.15 Power Supply Å WARNING: Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 72
. Some of these connectors may not be used on the product being serviced. Enhanced Keyboard Connector and Icon Pin Signal 1 Data 2 Unused 3 2 (-) Transmit Data 3 (+) Receive Data 4 Unused 5 Unused 6 (-) Receive Data 7 Unused 8 Unused Service Reference Guide 431672-001 A-1 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 73
Request 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 A-2 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 74
) 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 12 DDC Serial Data 13 Horizontal Sync 14 Vertical Sync 15 DDC Serial Clock Service Reference Guide 431672-001 A-3 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 75
24 Connector 13 Pin Signal 1 +3.3 V 2 +3.3 V 3 GND 4 +5 V 5 GND 6 +5 V 7 GND 12 Pin 8 9 10 11 12 13 13-1 Signal P.G +5 VSB +12 V +12 V +3.3 V +3.3 V +3.3 VS 4-Pin Power (for CPU) Connector and Icon 1 Pin Signal 14 -12 V 15 GND 16 PSON 17 GND 18 GND 19 GND 20 NI Pin Signal 1 GND 2 GND - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 76
dx2700 MT/dx2708 MT/ dx2700 SFF are assembled and shipped only for China, or Korea, or Australia/New Zealand Market, there aren't power switch selector with installed power supply. (b) When dx2700 MT and dx2700 SFF power cord set requirements, contact your authorized HP dealer, reseller, or service - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 77
Failure... Fatal memory parity error. System halts after displaying this message. BIOS could not boot from the device. This message is usually followed by information about the specific device. Invalid Boot Diskette Drive Not Ready Diskette in drive A: not bootable. BIOS could not configure drive - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 78
controller. DMA Controller Error POST error while trying to initialize the DMA controller. Checking NVRAM...Update Failed BIOS could not write to the NVRAM block. Recommended Action Reseat the device data and power cables. Replace the device data cable. Replace the device. Replace the system - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 79
Error Probable Cause BIOS could not find or load the CPU microcode update to the CPU. NVRAM Checksum Error detected while Bad, NVRAM Cleared validating NVRAM data. NVRAM Ignored NVRAM data used to store plug and play data was not used for system configuration . If problem persists, replace - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 80
the Checksum check. Keyboard Error Keyboard not present or system not responding when keyboard controller is initialized. Keyboard/Interface Error Keyboard controller failure. Recommended keys are depressed. Replace keyboard. Replace system board. C-4 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 81
drivers been installed for each application? ■ Remove all diskettes from the diskette drives before you turn on the system. ■ Are all switches set correctly? ■ Is the NIC Remote Wakeup cable (featured on some models) connected between the NIC and the riser/system board? Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 82
your HP authorized reseller or service provider. Problem Cause Solution Computer will not turn on. Cables to the external power source defective PCI card has Remove any expansion board that been installed. was just installed. Drive data or power supply Reseat drive data and power supply - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 83
and Time Properties in the Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Library CD for instructions on installing a new battery. Cursor will not move using the arrow keys on - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 84
. Bad monitor. Try a different monitor. Power LED is flashing and computer will not start. Initernal error has occurred Refer to "Interpreting Diagnostic Lights and the computer is and Audible Codes" to interpret the flashing a code. error code. D-4 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 85
device and configure the computer. If you install a non-plug and play device, you must reconfigure the computer after completing installation of the new hardware. In Windows XP Home/Professional, use the Add Hardware Wizard and follow the instructions that appear on the screen. Problem A new device - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 86
panel LED codes. ✎ Recommended actions in the following table are listed in the order in which they should be performed. ✎ Replace the system board or power supply only as the last resort. D-6 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 87
Display Problems Troubleshooting Without Diagnostics Solving Display Problems Problem type your password. System ROM is bad; system is running in FailSafe Boot Block mode (indicated by eight beeps power integrated graphics Windows Control Panel, double-click the Display icon and select the - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 88
Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. Pre-video graphics error coil to be activated when the monitor is powered on. None. - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 89
of the graphics card. Certain typed symbols do not appear correct. The font you are using does not support that particular symbol. Solution Lower brightness and/or contrast settings. 1. Select the monitor's AutoAdjustment option in the monitor's on-screen display menu. 2. Manually synchronize the - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 90
Troubleshooting Without Diagnostics Solving Audio Problems Solving Audio Problems Problem Cause Solution Sound does not come out of the speaker or headphones. Software volume control is turned down. Double-click the Speaker icon on the - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 91
Troubleshooting Without Diagnostics Solving Audio Problems (Continued) Problem Cause Solution Noise or no sound comes out 1. Before recording, make sure there is enough free space on the hard disk. 2. Try recording the audio file in a compressed format. Service Reference Guide 431672-001 D-11 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 92
Troubleshooting Without Diagnostics Solving Printer Problems Solving Printer Problems Problem Cause Printer will not print. Printer is not turned on and online. The correct printer driver for the application are not installed. Printer will not turn on. Printer prints garbled information. - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 93
Troubleshooting Without Diagnostics Solving Keyboard and Mouse Problems Solving Keyboard Problems Problem Cause Solution Keyboard commands and typing . Computer is in standby mode. Press the power button to resume from standby mode. Ä CAUTION: When Service Reference Guide 431672-001 D-13 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 94
Troubleshooting Without Diagnostics Solving Network Problems These guidelines do not discuss the process of debugging the 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 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 95
Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Cause Diagnostics passes, but the computer does not communicate with the network. (continued) The network controller is not configured for this computer. Network controller stopped working when an expansion board - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 96
Troubleshooting Without Diagnostics Solving Memory Problems Ä CAUTION: For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the system will not boot the operating system. Solving Memory Problems Problem Cause System will not boot or does not - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 97
hot. Troubleshooting Without Diagnostics Solution 1. Make sure the airflow to the computer is not blocked. 2. Make sure the fans are connected and working properly (some fans only operate when needed). 3. Make sure the processor heatsink is installed properly. Service Reference Guide 431672-001 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 98
is dirty. Windows does not detect the CD-ROM or DVD-ROM drive. Solution Run the Computer Setup utility and enable booting to removable media and verify boot order settings. Try a bootable CD in the drive. 1. Reconnect power and data cables to the drive. 2. Install correct device driver. See the - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 99
the default drive letter for the Drive Key in Windows XP. Install the Drive Key after the operating system boots. Solving Internet Access Problems Solving Internet Access Problems Problem Cause Unable to connect to the Internet. Internet Service Provider (ISP) account is not set up properly - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 100
RJ-45 connector. (If the connection is good, the "PC" LED light on the front of the cable/DSL modem will be on.) IP address is not configured properly. Contact the ISP for the correct IP address. Cookies are corrupted. Windows XP 1. Select Start > Control Panel. 2. Double-click Internet Options - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 101
modem uses, then click Properties. 7. Under Device status, verify that the modem is working properly. 8. Under Device usage, verify the modem is enabled. 9. If there are further problems, click the Troubleshoot button and follow the on-screen instructions. Service Reference Guide 431672-001 D-21 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 102
beeps will be heard. 5 Pre-video memory 1. Reseat DIMMs. Power on the error. system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Red Power LED 6 Pre-video graphics For systems with a graphics - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 103
Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED 8 Invalid ROM flashes 8 times, one based on bad every second, checksum. followed by a 2 second pause. Also 8 simultaneous beeps - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 104
board. 4. Check to see if the 5V_aux light on the system board is turned on. If it is turned on, then replace the power button harness. 5. If the 5V_aux light on the system board is not turned on, then replace the power supply. 6. Replace the system board. D-24 431672-001 Service Reference Guide - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 105
See the documentation included with the Restore Plus! CD for complete instructions on using this feature. ✎ In the event that you lose power during the initial operating system installation process, use the Restore Plus! CD to install the operating system. Service Reference Guide 431672-001 D-25 - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 106
Troubleshooting Without Diagnostics Contacting Customer Support For help and service, contact an authorized reseller or dealer. To locate a reseller or dealer near you, visit www.hp.com. ✎ If you take the computer to an authorized reseller, dealer, or service provider for service, remember to - HP dx2700 | Service Reference Guide: HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF Bu - Page 107
supports: ■ 256Mbit, 512Mbit, and 1 Gbit non-ECC memory technologies ■ single-sided and double-sided DIMMS ■ DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not supported ✎ The system will not start if you install unsupported DIMMs. Service Reference Guide
service reference guide
HP Compaq dx2700 MT/dx2708 MT/dx2700 SFF
Business PCs
1st Edition
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, SATA
drives, safety, routine care, connector pin assignments, POST
error messages, and diagnostic indicator lights.
Document Part Number 431672-001