HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed
HP Dc7700 - Compaq Business Desktop Manual
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- HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 1
service reference guide HP Compaq dc7700 Business PC 1st Edition This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, PATA and SATA drives, safety, routine care, connector pin assignments, POST - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 2
- HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 3
Service Reference Guide HP Compaq dc7700 Business PC dc7700 1st Edition Document Part Number: 433612-001 September 2006 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 4
subject to change without notice. Microsoft, MS-DOS, Windows, Windows NT, and Windows XP are trademarks of Microsoft Corporation in the U.S. and other equipment or loss of information. Service Reference Guide HP Compaq dc7700 Business PC First Edition (September 2006) Document Part Number: 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 5
or Upgrading Device Drivers 1-1 1.2 Transferring Files and Settings 1-2 1.3 Creating a Disc Recovery Set 1-2 2 Setup Utilities and Diagnostics Features 2.1 Power-On Self-Test (POST 2-1 2.2 Computer Setup Utilities 2-2 2.2.1 Using Computer Setup (F10) Utilities 2-3 2.2.2 Computer Setup - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 6
4-2 4.3 PATA Device Information 4-3 4.4 ATA SMART Drives 4-3 4.5 Hard Drive Capacities 4-3 5 Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1 Chassis Designations 5-1 5.1.1 Convertible Minitower (CMT 5-1 5.1.2 Small Form Factor (SFF 5-2 5.1.3 Ultra-Slim Desktop (USDT - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 7
Contents 5.5 Service Considerations 5-7 5.5.1 Power Supply Fan 5-7 5.5.2 Tools and Software Requirements 5-7 5.5.3 Screws 5-8 5.5.4 Cables and Connectors 5-8 5.5.5 Hard Drives 5-8 5.5.6 Lithium Coin Cell Battery 5-9 6 Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 8
and Replacement Procedures- Small Form Factor (SFF) Chassis 7.1 Preparation for Disassembly 7-1 7.2 Unlocking the Smart Cover Lock 7-2 7.3 Hood Sensor 7-4 7.4 External Security Devices 7-5 7.4.1 Security Clip 7-5 7.4.2 Cable Lock 7-5 7.4.3 Padlock 7-6 7.5 Computer Cover 7-7 7.6 Front Drive - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 9
8.20.2Type 2 Battery Holder 8-28 8.20.3Type 3 Battery Holder 8-29 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 Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 10
Contents viii 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 11
on how to purchase a support software CD subscription: http://h18000.www1.hp.com/support/files/desktops/us/purchase.html. ✎ If the computer has a writable optical drive, install the appropriate application to be able to write to the drive. Service Reference Guide, dc7700 433612-001 1-1 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 12
and Recovery Manager Manual. If Create factory software recovery CDs or DVDs to recover the system is unavailable on the system, the HP Restore Plus CD set can be obtained through product support on http://welcome/country/us/en/contact_us.html. 1-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 13
the system is turned on. POST checks the following items to ensure that the computer system is functioning properly: ■ Keyboard ■ Memory modules ■ All mass storage devices ■ Processors ■ Controllers ✎ If the Power-On Password is set, a key icon appears on the screen while POST is running. You will - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 14
Utilities Use Computer Setup Utilities (F10) to: ■ Change factory default settings. ■ Set the system date and time. ■ Set, view, change, or verify the system configuration, including settings for processor, graphics, memory, audio, storage, communications, and input devices. ■ Modify the boot order - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 15
system defaults. Ä CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the F10 Computer Setup changes because the CMOS could become corrupted. It is safe to turn off all power to the computer only after exiting the F10 Setup screen. Service Reference Guide, dc7700 433612-001 2-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 16
to select a drive containing a new BIOS. (some models) Replicated Setup Save media device, or a diskette-like device (a storage device Computer Setup. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 17
Device Configuration Lists all installed BIOS-controlled storage devices. When a device disk None (prevents BIOS data accesses and disables it as a boot device) Hard disk ( Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 18
and write requests with DMA data transfers. When "Disable" is selected, the BIOS will service ATA device read and write requests with PIO data transfers. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 19
if the target operating system supports accessing the SATA devices via AHCI (e.g. Windows Vista) and AHCI accesses are desired. ✎ Windows 2000 and Windows XP require a third-party device driver to access SATA devices using the AHCI interface. If you attempt to boot with either of these operating - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 20
/Disable Setup Browse Mode (appears if a setup password is set) (allows viewing, but not changing, the F10 Setup Options without entering setup password) ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 21
is supported on some models only. Device Security Enables/disables serial ports, parallel port, all USB ports, system audio, network controllers (some models), SMBus controller (some models), and embedded security device (some models). Network Service Boot Enables/disables the computer's ability - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 22
bar graph controls the minimum permitted fan speed. ✎ This setting only changes the minimum fan speed. The fans are still automatically controlled. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 23
slowly that they are not ready to boot by the time POST is finished. The POST delay also gives you more time to press F10 to enter Computer (F10) Setup. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc7700 433612-001 2-11 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 24
"boot" or primary VGA controller. ✎ In order to see this entry, you must enable integrated video (Advanced > Device Options) and Save Changes and Exit. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. 2-12 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 25
• Internal speaker (some models) (does not affect external speakers) • Monitor Tracking (enable/disable). Allows BIOS to save monitor asset information. ✎ Support for specific Computer Setup options may vary depending on the hardware configuration. Service Reference Guide, dc7700 433612-001 2-13 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 26
properly. Running tests is optional but recommended after installing or connecting a new device. You should run tests, save the test results, and print them for reference. ✎ Third party devices may not be detected by HP Insight Diagnostics. 2-14 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 27
of the computer. Input Devices-Shows information about the keyboard, mouse, and other input devices connected to the computer. Memory-Shows information about all memory in the computer. This includes memory slots on the system board and any memory modules installed. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 28
Interactive mode, but these require user intervention. ■ Custom Test-Provides the most flexibility in controlling the testing of a system. The Custom Test mode allows you to specifically select which devices, tests, and test parameters are run. There are two test modes to choose from: ■ Interactive - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 29
that should help solve the problem. To find an error code description quickly, enter the code in the box at the top of the tab and click the Find Error Codes button. The Test Components tab displays low level information on tests that are run. Service Reference Guide, dc7700 433612-001 2-17 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 30
Select the specific product. 5. Select the OS. 6. Click the Diagnostics link. 7. Select HP Insight Diagnostics Offline Edition. 8. Select the proper language and click Download. ✎ The download includes instructions on how to create the bootable CD. 2-18 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 31
information to help you select the best deployment method. The Restore Plus! CD, ROM-based setup, and ACPI hardware provide further assistance with recovery of system software, configuration management and troubleshooting, and power management. Service Reference Guide, dc7700 433612-001 3-1 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 32
on the computer. When installed, it enables communication with the HP OpenView management console. To install the Radia Management Agent: 1. Click Start. 2. Click All Programs. 3. Click HP Manageability. 4. Click Radia Management Agent Readme. 5. Review and follow the instructions contained in - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 33
a software image on one or more new PCs. ■ Remotely updating the system BIOS in flash ROM. See Section 3.4.1, "Remote ROM Flash." ■ Configuring the system BIOS settings. To initiate Remote System Installation, press F12 when the F12 = Network Service Boot message appears in the lower-right corner - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 34
drivers and BIOS updates without visiting each PC ■ Remotely configure BIOS and security settings ■ Automate processes to quickly resolve hardware problems Tight integration with HP Instant Support tools reduces hardware troubleshooting time. ■ Diagnostics-remotely run & view reports on HP desktop - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 35
management functionality. It combines: ■ HP Client Manager ■ HP Systems Insight Manager Connector ■ Altiris Migration Suite ■ Altiris Local Recovery Pro For more information about the HP Client Foundation Suite, visit http://www.hp.com/go/easydeploy. Service Reference Guide, dc7700 433612-001 3-5 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 36
■ Integrated hardware management ❏ Remote control ❏ HP alert monitoring ❏ HP hardware driver and BIOS updates ❏ Integration with HP ProtectTools ❏ Free add-on support for Intel Active Management Technology (AMT) ❏ Free version for basic hardware management of HP desktops and notebooks, and software - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 37
, select See support and troubleshooting information, enter the model number of the computer, and press Enter. In the Resources category, click Manuals (guides, supplements, addendums, etc). Under Quick jump to manuals by category, click White papers. On Intel vPro-branded PCs, available management - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 38
enable/disable management of firmware updates ❏ LAN Controller-enable/disable integrated network controller ❏ ME Features Control-enable AMT, ASF, or none ❏ ME Power Control-configure management engine power policies ■ Intel AMT Configuration ❏ Change AMT Password-required in order to configure - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 39
workstations. Starting with new business desktops, notebooks, and workstations released in 2006, all will ship with HP Backup and Recovery Manager. 3.4 ROM Flash The computer's BIOS is stored in a programmable flash ROM (read only memory). By establishing a setup password in the Computer Setup (F10 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 40
Desktop Management 3.4.2 HPQFlash The HPQFlash utility is used to locally update or restore the system BIOS on individual PCs through a Windows operating system. For more information on HPQFlash, visit http://www.hp.com/support/files and enter the product name/number of the computer when prompted. - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 41
green to enter Computer Setup. Press Enter to bypass the title screen, if necessary. 10. Select File > Replicated Setup > Restore from Removable Media, and follow the instructions on the screen. 11. Restart the computer when the configuration is complete. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 42
instructions on the screen to create the configuration diskette or USB flash media device. 8. Download a BIOS utility for replicating setup (repset.exe) and copy it onto the configuration diskette or USB flash media device. To obtain this utility, go to http://www.hp.com, click Software and Driver - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 43
Desktop Management Creating a Bootable Device Supported USB Flash Media Device Supported devices have a preinstalled image to simplify the process of making them bootable. All HP or Compaq and most other USB flash media devices have this preinstalled image. If the USB flash media device being used - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 44
older PCs may not be bootable from a USB flash media device. If the default boot order in the Computer Setup (F10) Utility lists the USB device before the hard drive, the computer can be booted from a USB flash media device. Otherwise, a bootable diskette must be used. 1. If there are any PCI cards - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 45
media device as drive C. ✎ The default boot order varies from computer to computer, and it can be changed in the Computer Setup (F10) Utility. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for instructions. If you have used a DOS version from Windows 9x - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 46
latest support software easier. You can download the software from http://www.hp.com/support. The Web site contains the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on the HP computer. 3.4.7 Industry Standards HP management - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 47
the Embedded Security device. • Reset the device to Factory Settings. ✎ 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, dc7700 433612-001 3-17 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 48
Desktop Management Security Features Overview (Continued) Option Description Device Security Enables/disables serial ports, parallel port, front USB ports, system audio, network controllers (some models), and SCSI controllers (some models). Network Service Boot Enables/disables the computer's - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 49
must restart the computer and again press F10 when the monitor light turns green to access the utility. 3. Select Security, then select Setup Password and follow the instructions on the screen. 4. Before exiting, Select File > Save Changes and Exit. Service Reference Guide, dc7700 433612-001 3-19 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 50
an embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. If a setup password has been established on the computer, you will be prompted to enter it each time you run Computer Setup. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 51
Desktop Management Changing a Power-On or Setup Password If the system is equipped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. 2. To change the Power - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 52
, you cannot access the computer. Refer to the Troubleshooting Guide on the Documentation and Diagnostics CD for instructions on clearing passwords. If the system is equiped with an embedded security device, refer to the HP ProtectTools Security Manager Guide at www.hp.com. 3.5.4 DriveLock DriveLock - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 53
to enter a correct password. On a cold boot, if neither attempt succeeds, POST will continue but the drive will remain inaccessible. On a warm boot or restart from Windows, if neither attempt succeeds, POST will halt and the user will be instructed to cycle power. DriveLock Applications The most - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 54
unlocked position. Ä CAUTION: For maximum cover lock security, be sure to establish a setup password. The setup password prevents unauthorized access to the Computer Setup utility. ✎ The Smart Cover Lock is available as an option on some systems. 3-24 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 55
3.5.6 Cable Lock Provision The rear panel of the computer accommodates a cable lock so that the computer can be physically secured to a work area. For illustrated instructions, please see the Removal and Replacement chapter for the specific chassis. Service Reference Guide, dc7700 433612-001 3-25 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 56
service provider can use this information to help diagnose conditions that caused you to run the DPS software. Refer to the Troubleshooting Guide for instructions on using DPS. 3.6.2 Surge-Tolerant Power Supply An integrated surge-tolerant power supply provides greater reliability when the computer - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 57
channel, device 0 Secondary channel, device 1 Color Dark blue Light Blue White Orange Port SATA 0 SATA 2 SATA 1 SATA 3 Attachment Sequence 1 4 2 3 ✎ If there is an error on the application of the attach rules, a POST error message may be displayed. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 58
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 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 59
10 while calculations by Microsoft are bytes to the base 2. Drive/Partition Capacity Limits File System FAT 32 NTFS Controller Type ATA ATA Operating System Windows 2000/ XP Windows NT/2000/XP Maximum Size Partition 32 GB 2 TB Drive 2 TB 2 TB Service Reference Guide, dc7700 433612-001 4-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 60
Serial and Parallel ATA Drive Guidelines and Features 4-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 61
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 Convertible Minitower (CMT) Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 62
Identifying the Chassis, Routine Care, and Disassembly Preparation 5.1.2 Small Form Factor (SFF) 5.1.3 Ultra-Slim Desktop (USDT) 5-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 63
protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. 5.2.1 Generating Static The following electrostatic-sensitive parts from assemblies in protective packaging or conductive foam. Service Reference Guide, dc7700 433612-001 5-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 64
/Toe straps/Boot straps can be used at standing workstations and are compatible with most types of shoes or boots. On conductive at static-free work areas. ■ Turn off power and input signals before inserting and removing connectors or service kits 5-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 65
apply. ■ Keep liquids away from the computer and keyboard. ■ Never cover the ventilation slots on the monitor with any type of material. ■ Install or enable power management functions of the operating system or other software, including sleep states. Service Reference Guide, dc7700 433612-001 5-5 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 66
the air vents on the computer. Lint and other foreign matter supply outlets. Ä CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are improperly removed or installed, the keyboard may not function properly. 5-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 67
from the power source before opening the computer to prevent system board or component damage. 5.5.2 Tools and Software Requirements To service the computer, you need the following: ■ Torx T-15 screwdriver (HP screwdriver with bits, PN 161946-001) ■ Torx T-15 screwdriver with small diameter shank - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 68
computer are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP are actually mounted in the CPU. ■ Avoid dropping drives from any height onto Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 69
5.5.6 Lithium Coin Cell Battery The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of about three years. See the appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 70
Identifying the Chassis, Routine Care, and Disassembly Preparation 5-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 71
6 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the diagnostics utility to verify that all components - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 72
Convertible Minitower (CMT) Chassis 6.2 Unlocking the Smart Cover Lock If you have locked the Smart Cover Lock use Computer Setup to unlock the lock. Refer to the Desktop Management Guide circumstances: ■ Power outage ■ Startup failure ■ Processor or power supply failure ■ Lost password 1. Using - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 73
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.3 Hood Sensor 1. Prepare the computer for disassembly (Section 6.1). the computer 1 and lower it down through the slot 2. To install the hood sensor, reverse the removal procedure. Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 74
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.4 External Security Devices 6.4.1 Cable Lock The cable lock may be used to secure the computer access panel to the chassis and, at the same time, secure the computer to a fixed object. 6.4.2 Padlock A padlock may be used by - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 75
and that the power cord is disconnected from the electrical outlet. 2. Lift up on the access panel handle 1, slide the access panel back about 2.5 cm (1 inch), then lift it off the unit 2. To install the computer cover, reverse the removal procedure. Service Reference Guide, dc7700 433612-001 6-5 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 76
for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Push up on the two release tabs 1, then rotate the front bezel away from the chassis to release it 2. To reinstall the front bezel, reverse the removal procedure 6-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 77
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.7 Front Drive Bezels 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the access panel (Section 6.5). 3. the bottom of the subpanel when properly oriented. Service Reference Guide, dc7700 433612-001 6-7 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 78
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.7.2 Diskette Drive Bezel or Bezel Blank Press up on the two small retaining clips 1 on the bottom of the bezel insert, press down on the two small retaining clips 2 on the top of the insert, and push the cover out of the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 79
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, dc7700 433612-001 6-9 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 80
Replacement Procedures - Convertible Minitower (CMT) Chassis 6.8.1 Cable Connections All cable connectors on the system board are color-coded for ease of installation. System Board Connections System Board Connector, Name, and Connector Color Description P10, FLOPPY, black P70, CPU FAN Diskette - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 81
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.9 Memory CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 82
and Replacement Procedures - Convertible Minitower (CMT) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. ✎ If you normally lock the Smart Cover Lock, use Computer Setup to relock the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 83
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 5. If you are installing an expansion card in a vacant socket, remove the installed expansion card, disconnect any cables that may be attached to the expansion card. Service Reference Guide, dc7700 433612-001 6-13 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 84
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 7. If you are removing a PCI Express card from a x16 PCI Express socket with a retention mechanism, pull the retention arm away from the socket then carefully rock the card back and forth until the connectors pull - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 85
Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor. 15. Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for instructions about using Computer Setup. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 86
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.11 PCI Retainer Latch 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). by pulling the latches off the pivoting bar 2. 6-16 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 87
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6. Slide the pivoting bar to the right 1, then lift the left end 2 to remove it in place on the rotating bar. ✎ The green latches are marked "R" and "L" for your convenience. Service Reference Guide, dc7700 433612-001 6-17 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 88
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.12 Expansion Card Guide 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove any expansion cards that might be in the way (Section 6.10). 4. Compress the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 89
- Convertible Minitower (CMT) Chassis 6.13 Drives The computer supports up to six drives that may be installed in various configurations. This Section describes the procedure for replacing or upgrading the storage drives. A Torx T-15 screwdriver is needed to remove and install the guide screws - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 90
bezel (Section 6.6). 4. Disconnect the power 1 and data 2 cables from the back of the drive. ✎ The right-angle data cable must be used for this chassis model when installing hard drives in the 3.5-inch bays to prevent cable damage from overflexing. 6-20 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 91
-supplied standard screws used on hard drives are silver. 7. Store the removed drive in anti-static packaging. 8. Install the new drive by sliding it into the appropriate drive bay on the front of the chassis. The drivelock automatically secures the drive in the bay. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 92
cable. 5. If the computer is in the desktop mode, continue with step 7. If the computer is in the minitower mode, continue with step 8. 6. In the desktop mode, press down on the yellow drivelock mechanism 1 and slide the drive from the drive bay 2. 6-22 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 93
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 7. In the minitower mode, pull up on the green drivelock mechanism 1 for that specific drive and slide the drive from the drive bay 2. 8. Remove the four guide screws (two on each side) from the old drive and install them in - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 94
- Convertible Minitower (CMT) Chassis 9. After installing the M3 metric guide screws 1, install the drive by sliding it into the appropriate drive bay on the front of the chassis 2. The drivelock automatically secures the drive in the bay. Ä CAUTION: Make sure the guide screws line up with the guide - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 95
and power cables to the drive. 8. Replace the front bezel (Section 6.6). 9. Replace the computer access panel (Section 6.5). 10. If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor (Section 6.2). Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 96
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.14 Front I/O Device 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect the two I/O device cables from the system - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 97
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.15 Power Switch Assembly 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect the power switch/LED cable from the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 98
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.16 System Board 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove all PCI expansion boards (Section 6.10). 4. Remove the x16 PCI Express graphics card (Section - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 99
Convertible Minitower (CMT) Chassis 6.17 Battery The 3-volt lithium coin cell battery that comes with this computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the computer - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 100
. 4. Replace the computer access panel. 5. Plug in the computer and turn on power to the computer. 6. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 6-30 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 101
of 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, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 102
place. 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, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 6-32 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 103
- Convertible Minitower (CMT) Chassis 6.18 Heatsink 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the heatsink control cable to them may require replacing the system board. Service Reference Guide, dc7700 433612-001 6-33 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 104
Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.19 Processor 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the heatsink control cable from the system board and remove the heatsink (Section 6.18). 4. - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 105
new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support removal procedures. Service Reference Guide, dc7700 433612-001 6-35 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 106
Procedures - Convertible Minitower (CMT) Chassis 6.21 Chassis Fan 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Disconnect the fan control cable housing for proper air flow orientation. 6-36 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 107
6.5). 2. Disconnect all power cables from the mass storage devices and from the system board. 3. Remove the four screws that connect the power supply to the chassis 1 and slide the chassis forward 2 until it is stopped by the retaining clips. Service Reference Guide, dc7700 433612-001 6-37 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 108
Convertible Minitower (CMT) Chassis 4. With the power supply stopped by the retaining clips 1, lift the power supply to raise it over the clips then slide the power supply forward 2 to remove it from the computer. To install the power supply, reverse the removal procedure. 6-38 433612-001 Service - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 109
and Replacement Procedures - Convertible Minitower (CMT) Chassis 6.23 Changing from Desktop to Minitower 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect all power and data cables from - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 110
Convertible Minitower (CMT shorter depth than the upper two bays. The bottom bay supports a drive that is no more than 17 cm (6.7 result in damage to the drive. 8. Reconnect all power and data cables to the drives in the 5.25 minitower configuration. 6-40 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 111
, then snap it back into the bezel. 12. Replace the front bezel and computer access panel. 13. Reconnect the external equipment. 14. If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor. Service Reference Guide, dc7700 433612-001 6-41 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 112
Convertible Minitower (CMT) Chassis 6.24 Changing from Minitower to Desktop 1. Prepare the computer for disassembly (Section 6.1). 2. Remove the computer access panel (Section 6.5). 3. Remove the front bezel (Section 6.6). 4. Disconnect all power . 6-42 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 113
Convertible Minitower (CMT shorter depth than the upper two bays. The bottom bay supports a drive that is no more than 17 cm (6.7 result in damage to the drive. 8. Reconnect all power and data cables to the drives in the 5.25 desktop configuration. Service Reference Guide, dc7700 433612-001 6-43 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 114
, then snap it back into the bezel. 12. Replace the front bezel and computer access panel. 13. Reconnect the external equipment. 14. If you normally lock the Smart Cover Lock, use Computer Setup to relock the lock and enable the Smart Cover Sensor. 6-44 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 115
7 Removal and Replacement Procedures- Small Form Factor (SFF) Chassis Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 116
Removal and Replacement Procedures- Small Form Factor (SFF) 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 and Diagnostics CD for more information about the Smart - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 117
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis To reattach the Smart Cover Lock: 1. Install the Smart Cover Lock assembly on the inside of the rear panel with the metal arm 1 wrapped around the air vent grid on the back of the chassis. 2. Use the supplied tamper-resistant screw - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 118
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.3 Hood Sensor 1. Prepare the computer for disassembly. 2. Remove the computer cover. 3. Remove the special security clip (Section 7.4.1) from the top corner of the power supply cage. 4. Raise the power supply to its full upright - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 119
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.4 External Security Devices 7.4.1 Security Clip A special clip is required to secure the computer from intrusion. This clip must be installed before installing the computer cover. 7.4.2 Cable Lock The cable lock may be used to - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 120
Replacement Procedures- Small Form Factor (SFF) Chassis 7.4.3 Padlock A padlock may be used by itself to secure the computer cover to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. I 7-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 121
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.5 Computer Cover 1. Prepare the computer for disassembly (Section 7.1). Ä CAUTION: Before removing the computer cover, ensure that the computer is turned off and that the power cord is disconnected from the electrical outlet. 1. - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 122
Procedures- Small Form Factor (SFF) Chassis 7.6 Front Drive Bezels 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover ( the computer configuration. 4. Install a bezel or a bezel blank by pushing the bezel into place. 7-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 123
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis There are three drive bezel inserts that are available. Item 1 2 3 Description Diskette drive bezel Hard drive bezel 3.5" drive bezel Service Reference Guide, dc7700 433612-001 7-9 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 124
Small Form Factor (SFF) Chassis 7.7 Cable Management The Small Form Factor chassis is a very compact computer and proper routing of the internal cables is critical to the operation of the computer damage the cable and result in a failed power supply. 7-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 125
Small Form Factor (SFF) Chassis 7.7.1 Cable Connections System board connectors are color-coded to make it easier to find the proper connection. Cable To Cable Designator Power Supply System board, 24-pin P1 Power Supply Diskette drive P2 Power Supply CPU power, 6-pin P3 Power Supply - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 126
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.8 Memory Ä CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/or oxidation resulting from having - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 127
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. ✎ If you normally lock the Smart Cover Lock, use Computer Setup to relock the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 128
- Small Form Factor (SFF) Chassis 7.9.2 PCI Expansion Card 1. If you have locked the Smart Cover Lock, restart the computer and enter Computer Setup to unlock the lock. 2. Turn off the computer properly through the operating system, then turn off any external devices. 3. Disconnect the power cord - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 129
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 8. Install the expansion card by sliding on the rear of the computer must contain either an expansion card or slot cover for proper cooling of internal components during operation. Service Reference Guide, dc7700 433612-001 7-15 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 130
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.9.3 PCI Express Expansion Card To remove a PCI Express expansion card: 1. If you have locked the Smart Cover Lock, restart the computer and enter Computer Setup to unlock the lock. 2. Turn off the computer properly through the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 131
- Small Form Factor (SFF) Chassis 7.10 PCI Riser Card Assembly and Backwall 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2). 2. Prepare the computer for disassembly (Section 7.1). 3. Remove the computer cover (Section 7.5). 4. Remove all PCI and PCI - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 132
Small Form Factor (SFF) Chassis 7. Remove the SmartCover lock from the backwall of the chassis using the special security wrench and disconnect its cable from the system board. (Section 7.2) 8. Disconnect the data and power chassis fan (Section 7.18) 7-18 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 133
Small Form Factor (SFF) Chassis 12. Remove the long mounting screw that secures the system board tray to the chassis. 13. Slide the system board tray assembly towards the front of the chassis about 6 cm (1/4 inch) and lift the system board up and out of the chassis. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 134
and Replacement Procedures- Small Form Factor (SFF) Chassis 14. Remove the three screws that secure the backwall assembly to the chassis 1, then slide the backwall assembly a few millimeters/inches toward the space vacated by the power supply and lift out(2. 15. Slide the new backwall onto the rear - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 135
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 16. Install the serial connector into the new backwall using the two screws that were removed from the serial connector in a previous step. Reconnect the "Serial A" cable to the system board. 17. Install - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 136
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 23. Rotate the drive cage back down to its normal position. Be sure proper air flow. To verify the type and size of the storage device installed in the computer, run Computer Setup. 7-22 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 137
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.11.2 Optical Drive Ä CAUTION: All removable media should be taken out of the drives before removing the drive from the computer. ✎ An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD+R/RW, or CD-RW/DVD Combo drive. 1. If you have - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 138
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 6. Rotate the new one. The screws take the place of drive rails. Ä CAUTION: Use only 5-mm long screws as guide screws. Longer screws can damage the internal components of the drive. 7-24 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 139
and Replacement Procedures- Small Form Factor (SFF) Chassis 7.11.3 External 3.5-inch Drive 1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the lock (Section 7.2). 2. Prepare the computer for disassembly (Section 7.1). 3. Remove the computer cover (Section 7.5). 4. Remove - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 140
- Small Form Factor (SFF) Chassis 8. Press the green drive retention latch 1 located on the side of the diskette drive to disengage the drive from the drive cage and slide the diskette drive forward approximately 6mm (1/4 inch) 2. 9. Lift the rear of the drive up so that the rear guide screws - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 141
and Replacement Procedures- Small Form Factor (SFF) Chassis 7.11.4 Primary Hard Drive A Torx T-15 screwdriver is needed to remove and install the guide screws on a hard drive. Ä CAUTION: Make sure personal files on the hard drive are backed up to an external storage device before removing the hard - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 142
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 5. Remove the security clip that secures the backwall to the power supply. 6. Rotate the power supply to its full upright position. 7-28 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 143
Small Form Factor (SFF) Chassis 7. Disconnect the power and data cables from the back of the hard drive. 8. Pull the tab that locks the drive in place away from the drive 1, slide the hard drive toward the front of the computer performance problems. Service Reference Guide, dc7700 433612-001 7-29 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 144
- Small Form Factor (SFF) 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 extra 6-32 standard guide - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 145
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.13 Front I/O Devices 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the two screws that secure the front I/O device to the chassis 1. 4. Rotate the drive cage to its - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 146
Small Form Factor (SFF) Chassis 7.14 Heatsink 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Disconnect the fan control cause the computer to overheat. 7-32 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 147
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.15 Processor 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Disconnect the heatsink control cable from the system board and remove the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 148
installing a new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support/files. 7-34 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 149
Small Form Factor (SFF) Chassis 7.16 Speaker 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section 7.12). 4. Remove any memory the speaker, reverse the removal procedures. Service Reference Guide, dc7700 433612-001 7-35 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 150
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.17 Power Supply Å WARNING: Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 151
and Replacement Procedures- Small Form Factor (SFF) Chassis 8. Rotate the power supply to its full upright position 1, then lift the power supply straight up and out of the chassis 2. To install the power supply, reverse the removal procedure. Ä CAUTION: When installing the power supply cables, make - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 152
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.18 Chassis Fan 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the fan shroud (Section face the inside of the chassis. 7-38 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 153
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.19 System Board 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove all PCI and PCI Express expansion boards (Section 7.9). 4. Remove the fan shroud from the chassis ( - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 154
Procedures- Small Form Factor (SFF) Chassis 9. Disconnect the serial port from the system board. 10. Disconnect the balance of the cables from the system board. 11. Remove the long mounting screw that secures the system board tray to the chassis. 7-40 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 155
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 12. Slide the system board tray assembly towards the front of the chassis, about 6 they be positioned so they do not interfere with the rotation of the drive cage or power supply. Service Reference Guide, dc7700 433612-001 7-41 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 156
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.20 Drive Clutch Components 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section 7.5). 3. Remove the the wires that are threaded through it. 7-42 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 157
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 8. Hold the drive cage in the upright position while removing the two screws that secure the clutch finger assembly to the drive cage. ✎ The clutch finger assembly doe not have to be removed to remove the power switch. To replace - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 158
Replacement Procedures- Small Form Factor (SFF) Chassis 7.21 Power Switch Assembly 1. Prepare the computer for disassembly (Section 7.1). 2. Remove the computer cover (Section . To install the power switch and LEDs, reverse the removal procedure. 7-44 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 159
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis 7.22 Battery The battery that comes with this computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 160
. 4. Replace the computer access panel. 5. Plug in the computer and turn on power to the computer. 6. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 7-46 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 161
of 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, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 162
- Small Form Factor (SFF) Chassis 7.22.3 Type 3 Battery Holder 1. Pull back on the clip 1 that holds the battery in place, then remove the battery 2. 2. Insert the new battery and position the clip back in place. 3. Replace the computer access panel. 4. Plug in the computer and turn on power to - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 163
in the "Standby," or "Suspend" modes. The power cord should always be disconnected before servicing a unit. 6. Disconnect the power cord from the electrical outlet and then from the computer. 7. Disconnect all peripheral device cables from the computer. ✎ During disassembly, label each cable as you - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 164
loosen the thumbscrew that secures the computer to the stand 1. 9. Slide the computer forward until it is disengaged from the hooks on the front of the tower stand, then lift the computer off the stand 2 and lay the computer down on its rubber feet. 8-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 165
time, secure the computer to a fixed object. 8.2.2 Installing a Padlock A padlock may be used by itself to secure the access panel to the computer chassis. A padlock may also be used with a security cable to secure the computer to a fixed object. Service Reference Guide, dc7700 433612-001 8-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 166
surface. 3. Loosen the captive thumbscrew 1 that secures the access panel to the computer chassis. 4. Slide the top access panel back about 1.3 cm, (1/2 inch), then lift it off the unit 2. To install the access panel, reverse the removal procedure. 8-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 167
(Section 8.3). 3. Push the release latch on the side of the optical drive towards the outside of the computer 1 and slide the drive out of the computer through the front bezel 2. 4. Disconnect the flat ribbon cable from the back of the optical drive. Service Reference Guide, dc7700 433612-001 8-5 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 168
Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis Before the new optical drive can be used, the release latch must be attached. 1. Peel the backing off the optical drive. To install the optical drive, reverse the removal steps. 8-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 169
and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.5 Front Panel Assembly 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. front panel assembly, reverse the removal procedure. Service Reference Guide, dc7700 433612-001 8-7 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 170
and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.6 Front Bezel 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the front bezel, reverse the removal procedures. 8-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 171
Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.7 Chassis Fan 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove nearest the center of the front panel assembly. Service Reference Guide, dc7700 433612-001 8-9 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 172
Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.8 Speaker 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). 3. Remove the speaker, reverse the removal procedure. 8-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 173
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, dc7700 433612-001 8-11 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 174
, (blue) Speaker P6, SPKR Serial port A P54, COM A Parallel connector P126, PAR Hood sensor P125, HSENSE SATA hard drive P60, SATA0, (dark blue) Power Supply Connections Connector ID P1 P2 P3 Main power Hard drive CPU power Description 8-12 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 175
seated. Make sure the latches are in the closed position 3. ✎ A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket. 4. Repeat step 3 for any additional modules that you want to install. Service Reference Guide, dc7700 433612-001 8-13 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 176
- Ultra-Slim Desktop (USDT) Chassis ✎ The computer automatically recognizes the additional memory when the computer is turned on. To reassemble the computer, reverse the removal procedure. 8.11 Expansion Card Cage The computer supports two different expansion card cages: ■ a PCI Express card cage - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 177
with step 8. If you are installing a new expansion card, continue with step 8. Ä CAUTION: After removing an expansion card, you must replace it with a new card or expansion slot cover for proper cooling of internal components during operation. Service Reference Guide, dc7700 433612-001 8-15 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 178
card in place. 10. Install the expansion card cage into the computer. 11. Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for instructions about using Computer Setup. 8-16 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 179
Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8.13 Expansion Card Retaining Latch 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access panel (Section 8.3). place and reinstalling the expansion card cage. Service Reference Guide, dc7700 433612-001 8-17 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 180
the Restore Plus! CD to load the HP factory-installed files. Ä CAUTION: To prevent loss of work and damage to the computer or drive: ■ If you are inserting panel assembly (Section 8.5). 6. Disconnect the power and data cables from the hard drive. 8-18 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 181
Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 7. Pull new drive. 9. Store the removed drive in anti-static packaging. To install a drive, reverse the removal procedure. Ä CAUTION: When installing the hard drive, ensure that cable are not cut or pinched. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 182
Desktop (USDT) Chassis 8.15 Front I/O Device 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer access cables are color coded to match their connectors on the front I/O board and are keyed to prevent improper connections. 8-20 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 183
Desktop (USDT) Chassis 8.16 Heatsink Assembly 1. Prepare the computer for disassembly (Section 8.1). 2. Remove the computer go to step 1. If uisng a new heatsink, go to step 3. 1. If control cable and the thermal sensor cable to the system board. Service Reference Guide, dc7700 433612-001 8-21 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 184
to the processor's solder connections. To install a new processor: 1. Place the processor in its socket and close the retainer. 2. Secure the locking lever. If reusing the existing heatsink, go to step 3. If using a new heatsink, go to step 5. 8-22 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 185
✎ After installing a new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support/files. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 186
the removal procedure. Make sure the power supply engages the clips on the chassis when sliding it into place. ✎ When installing the power supply make sure the cables are routed properly and do not interfere with the access panel installation. 8-24 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 187
the memory modules (Section 8.10). 7. Remove the expansion card cage (Section 8.11). 8. Remove the hard drive (Section 8.14). 9. Remove the heatsink (Section 8.16). 10. Remove the power supply (Section into the keyhole slots on the system board. Service Reference Guide, dc7700 433612-001 8-25 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 188
front I/O, fan, and speaker cables from the system board. 5. Remove the power supply to access the battery (Section 8.18). 6. Depending on the type of battery holder on the system board, complete the following instructions to replace the battery: 8-26 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 189
battery has been replaced, reverse the disassembly procedure. 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, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 190
replaced, reverse the disassembly procedure. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. 8-28 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 191
battery has been replaced, reverse the disassembly procedure. 4. Plug in the computer and turn on power to the computer. 5. Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide. Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 192
Removal and Replacement Procedures - Ultra-Slim Desktop (USDT) Chassis 8-30 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 193
pin assignments for many computer and workstation connectors. Some of these connectors may not be used on the product being serviced. Keyboard Connector and Icon Unused Ethernet BNC Connector and Icon Pin 1 (Center) 2 (Shield) Signal Data Ground Service Reference Guide, dc7700 433612-001 A-1 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 194
1 4 Data Bit 2 5 Data Bit 3 6 Data Bit 4 Pin Signal 7 Data Bit 5 8 Data Bit 6 9 Data Bit 7 10 Acknowledge 11 Busy 12 Paper End Pin 13 14 15 16 17 18-25 Signal Select Auto Linefeed Error Initialize Printer Select IN Signal Ground A-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 195
Data Set Ready Request to Send Clear to Send Ring Indicator (5V if powered) USB Connector and Icon Pin Signal 1 +5 VDC 2 - Data 3 Audio Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_In_Left Audio_In_Right Ground Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 196
Connector Pin Assignments Line-Out Audio Connector and Icon (1/8" miniphone) 1 23 Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_Out_Left Audio_Out_Right Ground External Serial Data 13 Horizontal Sync 14 Vertical Sync 15 DDC Serial Clock A-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 197
1 Audio L-ch 14 DD12 2 Audio R-ch 15 DD3 3 Audio GND 16 DD13 4 GND 5 RESET- 17 32 PDIAG33 DAO 34 DA2 35 CS1FX36 CS3FX- 37 DASP38 +5V 39 +5V Pin Signal 40 +5V 41 +5V 42 +5V 43 GND 44 GND 45 GND 46 GND 47 CSEL 48 GND 49 Vendor-specific 50 Vendor-specific Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 198
21 +5 V 22 +5 V 23 +5 V 24 GND 24-Pin MicroFit Power (USDT, SFF, and ST models) Connector 24 13 Pin Signal 1 +5 Vaux 2 GND Power (for CPU) (MT and CMT models) Connector and Icon Pin 1 2 3 4 CMT and MT Signal GND GND +12 V CPU -12 V CPU A-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 199
Signal S1 Ground S5 B- S2 A+ S6 B+ P1 V 3.3 P5 Ground P9 V 5 P13 V 12 P2 V 3.3 P6 Ground P10 Ground P14 V 12 *S = Data, P = Power Pin Signal S3 AS7 Ground P3 V 3.3 P7 V 5 P11 Reserved P15 V 12 Pin Signal S4 Ground P4 Ground P8 V 5 P12 Ground Service Reference Guide, dc7700 433612-001 A-7 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 200
82 GND Pin B information is on the next page Notes: x1 PCI Express uses pins 1-18 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-8 Pin Signal 16 PERp0 17 PERn0 18 GND 71 GND 72 PERp13 73 PERn13 74 GND 75 GND A-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 201
79 PETn15 80 GND 81 PRSNT2# 82 RSVD Notes: x1 PCI Express uses pins 1-18 x4 PCI Express uses pins 1-32 x8 PCI Express uses pins 1-49 x16 PCI Express uses pins 1-82 Pin Signal 11 WAKE# 12 RSVD PETp8 71 PETn13 72 GND 73 GND 74 PETp14 75 PETn14 Service Reference Guide, dc7700 433612-001 A-9 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 202
- Pin Signal 13 T.M.D.S. Data3+ 14 +5V Power 15 Ground (for +5V) 16 Hot Plug Detect 17 T.M.D.S. Data018 T.M.D.S. Data0+ 19 T.M.D.S. Data0/5 Shield 20 T.M.D.S. Data5- 21 T.M.D.S. Data5+ 22 T.M.D.S. Data Shield 23 T.M.D.S. Clock+ 24 T.M.D.S. Clock- A-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 203
the power cord set is damaged in any manner, replace it immediately. Japanese Power Cord Requirements For use in Japan, use only the power cord received with this product. Ä CAUTION: Do not use the power cord received with this product on any other products. Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 204
Power Cord Set Requirements Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Accrediting Agency with a Japanese Industrial Standard C8303 (7A, 125V) configuration. B-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 205
from being downloaded during POST to free more memory for an expansion card's option ROM. Internal PXE option ROM is used for booting from the NIC to a PXE server. 3. Ensure that the ACPI/USB Buffers @ Top of Memory setting in Computer Setup is enabled. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 206
chipset. Populated DIMM configuration is not optimized. Recommended Action Run Computer Setup and check configuration in Advanced > Onboard Devices. Reset the date and time under Control Panel. If the problem persists, replace the RTC battery. Reset the date and time under Control Panel (Computer - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 207
with another device. Graphics display controller. 510-Flash Screen image Flash Screen image has corrupted errors. Recommended Action 1. If additional memory was recently added, remove it to see if the problem remains. 2. Check product documentation for memory support information. 1. Reconnect - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 208
allow system to reconfigure without the drive. Run Computer Setup and check the configuration in Advanced > Onboard Devices. Replace system board if minimal graphics degrading is an issue. No action required. Reconnect or replace front audio harness. C-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 209
/or run Computer Setup or Windows utilities. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Enter Computer Setup and reset the IRQ in Advanced > Onboard Devices. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 210
-capable SATA device, ensure Drivelock is Disabled. Lastly, change Storage > Storage Options > SATA Emulation back to RAID and select File > Save Changes and Exit. 1. Upgrade BIOS to proper version. 2. Change the processor. 1. Reboot the computer. 2. Unplug the power cord, re-seat the memory modules - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 211
the original memory configuration, and reboot the computer. 4. If the error persists, replace the system board. 1. Reboot the computer. 2. If the error persists, update to the latest BIOS version. 3. If the error still persists, replace the system board. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 212
will not boot without fan. Parity RAM failure. CPU fan not installed or disconnected in VSFF chassis. Recommended Action 1. Reboot the computer. 2. If the error persists, update to the latest BIOS version. , then replace the heatsink-fan assembly. C-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 213
every two seconds. Red Power LED flashes two times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Beeps None None 2 Possible Cause Recommended Action Computer on. None Computer in Suspend to RAM mode (some models - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 214
unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. 1. Reseat DIMMs. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. C-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 215
the system board. Replace the system board. 1. Reflash the ROM with the latest BIOS image. See the "Boot Block Emergency Recovery Mode" section of the Desktop Management Guide on the Documentation and Diagnostics CD. 2. Replace the system board. Service Reference Guide, dc7700 433612-001 C-11 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 216
stop after fifth iteration but LEDs continue until problem is solved. Beeps 9 10 Possible Cause System powers on but is unable to boot. Bad option card. Recommended Action 1. Check that the voltage selector, located on the rear of the power supply (some models), is set to the appropriate voltage - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 217
, then replace the power button harness. 5. If the 5 V_aux light on the system board is not turned on, remove the expansion cards one at a time until the 5 V_aux light on the system board turns on. If the problem persists, replace the power supply. Service Reference Guide, dc7700 433612-001 C-13 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 218
POST Error Messages C-14 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 219
If the system beeps, then the keyboard is operating correctly. ■ Check all cables for loose or incorrect connections. ■ Reconfigure the computer after installing a non-Plug and Play expansion board or other option, such as a diskette drive. ■ Are all of the necessary device drivers installed? ■ Have - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 220
lose any unsaved data. Restart computer. 1. Reset the date and time under Control Panel. Computer Setup can also be used. 2. Replace the RTC battery. Establish a network connection, or use Computer Setup or Microsoft Windows Device Manager to disable the network controller. Press the Num Lock key - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 221
application or consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application. 2. Add more memory. 3. Upgrade the graphics solution. Restart the computer. Service Reference Guide, dc7700 433612-001 D-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 222
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 off, then replace the power supply. 6. Replace the system board. D-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 223
Troubleshooting Without Diagnostics Solving Power Supply Problems Solving Power Supply Problems Problem Cause Power supply shuts down intermittently. Voltage selector switch on rear of computer chassis (some models) is not switched to correct line voltage (115V or 230V). Power supply will not - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 224
device at a time and repeat this procedure until failure occurs. Replace the device causing the failure. Continue adding devices one at a time to ensure all devices are functioning properly. 4. Replace the power supply. 5. Replace the system board. D-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 225
Troubleshooting Without Diagnostics Solving Diskette Problems Solving Diskette Problems Problem in Computer Setup. Diskette is damaged. Invalid media reported. Disk may be write-protected. Solution In Microsoft Windows XP, device on the diskette. Service Reference Guide, dc7700 433612-001 D-7 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 226
Media Boot function overrides the Boot Order enable command. Run Computer Setup and disable Network Server Mode in Security > Password Options. Run Computer Setup and enable Removable Media Boot in Storage > Storage Options> Removable Media Boot. D-8 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 227
delay under Advanced > Power-On. Run Computer Setup and ensure the device's SATA port is enabled in Storage > Storage Options. Run Computer Setup and increase the POST Delay in Advanced > Power-On Options. Remove the diskette from the diskette drive. Service Reference Guide, dc7700 433612-001 D-9 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 228
Storage > Storage Options. Run the Computer Setup utility and change boot sequence in Storage > Boot Order. Run the Computer Setup utility and change the "Emulation Type" to "Hard Disk" in the device's details under Storage > Device Configuration. D-10 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 229
Troubleshooting Without Diagnostics Solving Hard Drive Problems (Continued) Problem Cause Computer will not boot from hard drive. (continued) The device is attached to a SATA port that has been disabled in Computer Setup. Hard drive is damaged. Computer seems to be locked up. Program in use - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 230
PC on for the first time. The inserted media card has boot capability. Computer will not boot from a USB removable drive or media that is inserted in the USB port on the media card reader. The media card reader is connected to the computer via the PCI card, which is not supported on the HP Desktop - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 231
enabled. System ROM is corrupted; system is running in Boot Block Emergency Recovery Mode (indicated by eight red blinks from the power LED and eight simultaneous beeps). Fixed-sync monitor will not sync at the resolution chosen. Computer is in standby mode. Monitor cable plugged into the wrong - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 232
sliding control to reset the resolution. The integrated graphics can be enabled in Computer Setup if a standard PCI graphics card is installed. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 233
Problems (Continued) Problem Cause Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computer beeps seven times. Beeps graphics controller was upgraded, the correct video drivers may Service Reference Guide, dc7700 433612-001 D-15 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 234
a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support 1. Reseat the graphics card. 2. Replace the graphics card. D-16 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 235
Software volume control is turned down. Audio is hidden in Computer Setup. The external speakers are not turned on. Solution Shut down all open processor-intensive applications. In Windows XP: 1. From the Control Panel, select Sounds and Audio Devices. 2. On the Audio tab, select a device from the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 236
for powered audio devices and is not designed for headphone use. Solution See the sound card documentation for proper speaker connection. Enable digital CD audio: 1. From the Control Panel, select System. 2. On the Hardware tab, click the Device Manager button. 3. Right-click on the CD/DVD device - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 237
the power cord and electrical outlet. 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. Check the paper tray and refill it if it is empty. Select online. Service Reference Guide, dc7700 433612 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 238
using the mouse and then restart the computer. See the Worldwide Limited Warranty for terms and conditions. 1. Check software, if available, for device status. 2. Check/replace device batteries. 3. Reset receiver and keyboard. Press the power button to resume from standby mode. Ä When attempting - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 239
not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. Remove roller ball cover from the bottom of the mouse and clean the internal components with a mouse cleaning kit. Service Reference Guide, dc7700 433612-001 D-21 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 240
a non-plug and play device, you must reconfigure the computer after completing installation of the new hardware. In Windows XP, use the Add Hardware Wizard and follow the instructions that appear on the screen. Å WARNING: When the computer is plugged into an AC power source, voltage is always - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 241
the computer beeps five times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Wrong memory modules were used in the upgrade or memory modules were installed in the wrong location. Memory is installed incorrectly or is bad. 1. Review the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 242
. 1. Run Computer Setup and enable network controller. 2. Enable the network controller in the operating system via Device Manager. Reinstall network drivers. Disable auto-sensing capabilities and force the system into the correct operating mode. D-24 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 243
the computer does not communicate with the network. The cable is attached to the incorrect connector. There is a problem with the cable or a device at the other end of the cable. Network controller interrupt is shared with an expansion board. The network controller is defective. Network drivers are - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 244
Troubleshooting Without Diagnostics Solving Network Problems (Continued) Problem Cause Network controller stops working without apparent cause. (continued) The network controller is defective. New network card will not boot. New network card may be defective or may not meet industry-standard - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 245
Troubleshooting Without Diagnostics Solving Memory Problems Ä CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (depending on the Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 246
party memory with HP memory. 4. Replace the system board. Solving Processor Problems . Solving Processor Problems Problem Cause Poor performance is experienced. Processor is hot. Power LED flashes Red three times, once every second, followed by a two second pause, and the computer beeps three - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 247
Troubleshooting Without Diagnostics Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems Problem Cause System will not boot from CD-ROM or DVD drive. The device is attached to a SATA port that has been disabled in the Computer Setup utility. Removable Media Boot is disenabled - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 248
manufacturers. USDT computer boots too slowly after removing a CD-ROM or DVD drive. The system is searching for the drive during boot because the drive cable is still attached to the system board. Disconnect the drive cable from the system board. D-30 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 249
Storage > Boot Order. Follow the procedures described in the "ROM Flash: Replicating the Setup: Creating a Bootable Device: Supported USB Flash Media Device" section of the Service Reference Guide. Install the Drive Key after the operating system boots. Service Reference Guide, dc7700 433612-001 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 250
device. 2. You might need to reboot the computer. The cable from the device to the computer does not work. 1. If possible, replace the cable. 2. Restart the computer. The device is not working. 1. Replace the device. 2. Restart the computer. D-32 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 251
UTP 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. Windows XP 1. Select Start > Control Panel. 2. Double-click Internet Options. 3. On the - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 252
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. Windows 2000 1. Select Start > Settings > Control Panel. 2. Double-click System. 3. Click the Hardware - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 253
all the needed device drivers have been installed. ■ If you have installed an operating system other than the factory-installed operating system, check to be sure it is supported on the system. Solving Software Problems Problem Cause Computer will not continue and no HP logo screen has appeared - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 254
Troubleshooting Without Diagnostics D-36 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 255
J54 Parallel port over Serial Port and Video Port J55 Parallel port over dual VGA ports J65 DVI connector J66 Keyboard connector, PS/2 (Closest to power supply) J67 Mouse connector, PS/2 Service Reference Guide, dc7700 433612-001 E-1 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 256
VRM module footprint AUI connector Fan command/fan sink header (may be 2 or 4 pin) Digital audio expansion header SPDIF internal input header SPDIF internal output header Primary IDE connector Secondary IDE/MultiBay connector Header for NEWCARD E-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 257
audio Header for front panel USB Internal USB connector 1 Internal USB connector 2 MultiBay header SCSI LED connector PCI extender slot (female) Blade PC graphics connector (outboard) Blade PC Primary (CPU) fan header for fansink Secondary CPU fan Service Reference Guide, dc7700 433612-001 E-3 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 258
transceiver VRM controller USB front port power switch First USB rear port power switch Second USB rear port power switch Third USB rear port power switch Battery retainer Memory slot. DIMM1 Secondary NIC clock crystal RTC clock crystal/tie-down E-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 259
mandatory JEDEC SPD information In addition, the computer 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 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 260
performing dual channel mode if the total memory capacity of the DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology and device width can vary between the channels. by the slowest DIMM in the system. F-2 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 261
mouse 5-7 safety precautions 5-6 clearing password 3-22 CMT 5.25" drive bezel removal and replacement 6-7 access panel removal and replacement 6-5 battery removal and replacement 6-29 bezel blank removal and replacement 6-8 cable connections 6-10 Service Reference Guide, dc7700 433612-001 Index-1 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 262
10 conversion CMT desktop to minitower 6-39 CMT minitower to desktop 6-42 Convertible Minitower See CMT country-specific power cord set requirements B-2 cover lock, smart 3-24 D date and time display problems D-2 DDR2 memory F-1 deleting password 3-21 delimiter characters, table 3-22 device drivers - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 263
Premium Suite 3-5 HP Insight Diagnostics 2-14 to 2-18 HP OpenView Client Configuration Manager 3-6 HP OpenView PC Management Solution 3-6 HP OpenView See HP OpenView HP ProtectTools Security Manager 3-5 HP System Software Manager 3-4 HPQFlash 3-10 Service Reference Guide, dc7700 433612-001 Index - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 264
assembly CMT removal and replacement 6-27 SFF removal and replacement 7-44 power-on password changing 3-21 deleting 3-21 entering 3-20 Power-On Self-Test (POST) 2-1 Preboot Execution Environment (PXE) 3-3 Proactive Change Notification (PCN) 3-8 Index-4 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 265
sensor 6-3 CMT memory 6-11 CMT optical drive 6-22 CMT padlock 6-4 CMT PCI Express card 6-14 CMT PCI retainer latch 6-16 CMT power supply 6-37 CMT power switch assembly 6-27 CMT processor 6-34 CMT Smart Cover Lock 6-2 CMT speaker 6-35 CMT system board 6-28 SFF backwall 7-17 SFF battery 7-45 SFF bezel - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 266
and replacement 7-2 speaker removal and replacement 7-35 system board connections 7-11 system board removal and replacement 7-39 tamper-proof screws 7-2 Small Form Factor. See SFF Smart Cover Lock CMT removal and replacement 6-2 locking 3-25 Index-6 433612-001 Service Reference Guide, dc7700 - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 267
replacement 7-39 USDT removal and replacement 8-25 T tamper-proof screws CMT 6-2 SFF 7-2 tool 5-7 temperature control 5-5 thermal sensor 3-26 tools, servicing 5-7 Torx T-15 screwdriver 5-7 troubleshooting D-1 to D-35 U Ultra-Slim Desktop See USDT unlocking Smart Cover Lock 3-25 USB pin assignments - HP Dc7700 | HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 268
ROM BIOS Flash 3-9 replicating setup 3-12 replicating setup, BIOS utility 3-12 Restore Plus! CD 1-2 ROM BIOS Flash 3-9 Subscriber's Choice 3-9 support software 3-16 support software CD subscription 1-1 wrench, tamper-resistant CMT 6-2 SFF 7-2 Index-8 433612-001 Service Reference Guide, dc7700
service reference guide
HP Compaq dc7700 Business PC
1st Edition
This document provides information on the removal and replacement of all
parts as well as information on troubleshooting, Desktop Management, setup
utilities, PATA and SATA drives, safety, routine care, connector pin
assignments, POST error messages, and diagnostic indicator lights.
Document Part Number 433612-001