Throughout this guide, there may be blocks of text printed in bold type or in italic type. These blocks are notes, notices, and cautions, and they are

used as follows:

NOTE: A NOTE indicates important information that helps you make better use of your system.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate

injury.

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, Dell Precision, OptiPlex, OptiFrame, Dell OpenManage, Dimension, Latitude, and DellWare are trademarks of Dell Computer Corporation;

Microsoft, Windows, MS-DOS, and Windows NT are registered trademarks of Microsoft Corporation; Intel and Pentium are registered trademarks and Celeron, Intel386, MMX,

and Xeon are trademarks of Intel Corporation; 3Com is a registered trademark of 3Com Corporation; IBM and OS/2 are registered trademarks of International Business

Machines Corporation; Novell and NetWare are registered trademarks of Novell, Inc.; UNIX is a registered trademark of The Open Group in the United States and other

countries; VESA is a registered trademark of Video Electronics Standards Association. As an ENERGY STAR Partner, Dell Computer Corporation has determined that this

product meets the ENERGY STAR guidelines for energy efficiency.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation

disclaims any proprietary interest in trademarks and trade names other than its own.

Model WCP

Initial release: 28 January 2000

Last revised: 6 April 2001

Summary of Contents for Dell Precision 620

Page 1 ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
Page 2 (DSP) engine that retrieves and restores spatial sound information, directional cues, and other sonic nuances that are typically missing or are altered by electronic reproduction of stereo sound. This section also describes the audio application programs that Dell has installed on your hard-disk drive, and it tells you how to reinstall audio drivers if necessary.
Page 3 Your computer system supports most standard personal computer microphones. You can purchase a microphone separately from Dell. NOTE: Do not use standard microphones. Use only microphones designed for use with computers. Connect the microphone's audio cable to the microphone jack (see...
Page 4 Using Audio Utilities The operating system installed on your Dell system has its own utilities for playing audio CDs and recording or playing .wav files: For Windows NT 4.0, use Sound Recorder to control the input of devices from which you are recording .wav data. Record allows you to adjust your selected audio input device.
Page 5 Back to Contents Page Basic Checks: Dell Precision™ WorkStation 620 Systems User's Guide Overview Checking Connections and Switches Backing Up Your Files Look and Listen Basic Checks System Setup Overview If your Dell™ computer system is not working as expected, and if you are not sure what to do, start your troubleshooting with the procedures in this section. This section guides you through basic steps to solve basic computer problems. It also directs you to further detailed troubleshooting information and procedures to solve more complex problems.
Page 6 If the system does not boot, see "Getting Help" for instructions on getting technical assistance from Dell. A solid green power indicator and a beep code during POST indicate that a Rambus in-line memory module (RIMM) may be faulty or is not properly seated.
Page 7 This problem can happen if you changed your system's hardware configuration and forgot to run System Setup. To correct this problem, enter System Setup, correct the setting for the corresponding System Setup program option, and reboot your system. If after checking the settings in System Setup you have not resolved the problem, see "Dell Diagnostics." Back to Contents Page...
Page 8 Back to Contents Page Installing System Board Options: Dell Precision™ WorkStation 620 Systems User's Guide Overview Microprocessor Upgrades Expansion Cards SuprFreq Utility Program Adding Memory Replacing the System Battery Removing and Installing a Memory Expansion Card Overview This section describes how to install the following options: Peripheral Component Interconnect (PCI) and accelerated graphics port (AGP) expansion cards...
Page 9 3 32-bit AGP expansion card Expansion Slots The Dell Precision 620 system provides six PCI 2.2-compliant expansion slots on two peer buses. Four 32-bit slots (1, 2, 3, and 4) are on the primary PCI bus. One or two of these slots may be used with the AGP Pro connector. Slot 4 is shared with the RAID port function. Two 64-bit slots (5 and 6) are on the secondary PCI bus.
Page 10 c. Verify that the standby power light-emitting diode (LED) is off. See Figure 1 for the location of this LED. 2. Remove the AGP card brace according to the instructions in "Removing and Replacing the AGP Card Brace." 3. Unscrew and remove the metal filler bracket that covers the card-slot opening for the expansion slot you intend to use (see Figure 3). Save the screw to use when you install the expansion card later in this procedure.
Page 11 (RIMMs) feature error checking and correction (ECC). Dell Precision 620 systems support a maximum of 8 RIMMs (4 RIMMs per MEC) for up to 2 gigabytes (GB) of total memory. NOTE: The memory module in each socket on one MEC must be the same memory capacity, number of components, and speed as the corresponding memory module in the same socket on the other MEC.
Page 12 3 RIMM3_B 4 RIMM4_B To add memory, perform the following steps. NOTICE: See "Protecting Against Electrostatic Discharge" in your Dell Precision WorkStations System Information Guide. Remove the computer cover. 2. Determine the memory module sockets in which you will install modules or replace existing modules.
Page 13 Removing and Installing a Memory Expansion Card NOTICE: See "Protecting Against Electrostatic Discharge" in your Dell Precision WorkStations System Information Guide. To remove a MEC, perform the following steps: Remove the computer cover.
Page 14 1. Go to http://support.dell.com. 2. Complete the one-time registration process if you have not already done so. 3. Click Dell Knowledge Base under Support Tools, enter second processor in the Search Documents by Words in Title option, and click Go. 4. Click the document title that corresponds to the operating system you are running.
Page 15 To add or replace an SEC cartridge, perform the following steps. NOTE: Dell recommends that only a technically knowledgeable person perform this procedure. NOTICE: See "Protecting Against Electrostatic Discharge" in your Dell Precision WorkStations System Information Guide. Remove the computer cover.
Page 16 When you reinstall Windows NT 4.0, the operating system detects the second processor. NOTE: If your Windows NT 4.0 operating system was installed by Dell, you do not need to reinstall it. 13. Run the Dell Diagnostics to verify that the new processor is operating correctly.
Page 17 If you have not created a profile for your specific system, do so now by creating a system profile in step 1. Enter the system service tag or the express service code, or select the Dell system model number from the dropdown menu. Click Go! in step 3 to proceed to your system's support page.
Page 18 2. Boot the system using the utility diskette. The following menu appears. NOTE: Menu instructions may vary depending on the processor speed. 1. Dell WS620 with 733 MHz Processor(s). 2. Dell WS620 with 800 MHz Processor(s). 3. Review the readme file.
Page 19 If the settings are lost while you are replacing the battery, refer to your written or printed copy of the system configuration information to restore the correct settings. NOTICE: See "Protecting Against Electrostatic Discharge" in your Dell Precision WorkStations System Information Guide. Remove the computer cover.
Page 20 1 Battery 2 Battery socket 5. Install the new battery. Orient the battery with the side labeled "+" facing up. Then insert the battery into the socket, and snap it into place. 6. Rotate the power supply back into position, making sure that the securing tab snaps into place (see "Rotating the Power Supply Away From the System Board").
Page 21 Asia and Other Regions Contact Numbers Americas Contact Numbers Overview When you need to contact Dell, use the telephone numbers, codes, and electronic addresses provided in the following sections. "International Dialing Codes" provides the various codes required to make long-distance and international calls.
Page 22 Area Code Toll-Free Number Brazil Customer Support, Technical Support toll free: 0800 90 3355 Sales toll free: 0800 90 3366 Web site: http://www.dell.com/br Canada Automated Order-Status System toll free: 1-800-433-9014 (North York, Ontario) AutoTech (Automated technical support) ...
Page 23: Switchboard
Customer Service toll free: 1-800-624-9897 (Credit Return Authorization Numbers) National Accounts (systems purchased by established Dell national accounts [have your account number handy], medical institutions, or value-added resellers [VARs]): Customer Service and Technical Support (Return toll free: 1-800-822-8965...
Page 24 Germany for Technical Support and Customer Preferred Accounts/Corporate Customer Care 0660-8056 Care. Home/Small Business Technical Support 795676-04 Preferred Accounts/Corporate Technical Support 0660-8779 Web site: http://support.euro.dell.com E-mail: tech_support_central_europe@dell.com Belgium Technical Support 481 92 88 (Brussels) Customer Care...
Page 25 01 55 94 71 01 Switchboard 0825 004 700 Switchboard (Alternative) 99 75 40 00 Sales 0825 004 700 Web site: http://support.euro.dell.com E-mail: web_fr_tech@dell.com Corporate Technical Support 0825 004 719 Customer Care 0825 338 339 Fax ...
Page 26 481 91 00 for sales, customer, and Customer Care (Brussels, Belgium) 481 91 19 technical assistance. Switchboard (Brussels, Belgium) 481 91 00 Fax (Brussels, Belgium) 481 92 99 Web site: http://support.euro.dell.com E-mail: tech_be@dell.com Netherlands Technical Support 581 8838...
Page 27: Web Site: Http://Support.euro.dell.com
902 118 539 Web site: http://support.euro.dell.com E-mail: web_esp_tech@dell.com Corporate Technical Support 902 100 130 Customer Care 902 118 546 Switchboard 722 92 00 91 722 95 83 Web site: http://support.euro.dell.com ...
Page 28: Switchboard
Technical Support Outside of Japan (Dimension and Inspiron) 81-44 520-1435 Technical Support (Dell Precision™, OptiPlex, and toll free: 0120-1984-33 Latitude) 81-44 Technical Support Outside of Japan (Dell Precision, 556-3894 OptiPlex, and Latitude) Customer Care 556-4240 24-Hour Automated Order Status Service 556-3801 Home and Small Business Group Sales 556-3344 Individual User Sales ...
Page 29: Customer Care
(Johannesburg) Customer Care 709 7707 Sales 709 7700 706 0495 Switchboard 709 7700 Web site: http://support.euro.dell.com E-mail: dell_za_support@dell.com Southeast Asian/Pacific Customer Technical Support, Customer Service, 60 4 633-4810 and Sales (Penang, Malaysia) Countries (excluding Australia,...
Page 30 Dell's service and support personnel. NOTICE: Only use the Dell Diagnostics to test your Dell computer system. Using this program with other computers may cause incorrect computer responses or result in error messages.
Page 31 5. Select Quick Tests from the Test All Devices or Test One Device option to perform a quick check of your computer or a specific device. Quick Tests runs only the subtests that run fast and do not require user interaction. Dell recommends that you select Quick Tests first to increase your chance of locating the problem quickly.
Page 32 Keys Explains the functions of all keystrokes that can be used in the Dell Diagnostics Device Group Describes the highlighted group in the Device Groups list on the main menu and provides reasons for using certain...
Page 33 5.25-inch bays that can hold up to three half-height, 5.25-inch devices—typically tape drives or CD-ROM drives. Alternately, 3.5-inch devices can be installed in the 5.25-inch bays using adapters available from Dell. The four-bay hard-disk drive cage below the externally accessible bays can hold up to four 1-inch, up to three 1.6 inch, or up to two 1-inch and two 1.6-inch hard-disk drives installed vertically.
Page 34 1 Tab release 2 Retaining hooks (2) To replace the bezel, perform the following steps: 1. Fit the two retaining hooks on the bezel into their corresponding slots at the bottom of the chassis. 2. Rotate the top of the bezel toward the chassis until the top tabs snap into their corresponding slots on the bezel. Replace the computer cover.
Page 35 Dell Precision WorkStation 620 systems equipped with LS-120 SuperDisk drives have the drive configured as the master device on the secondary EIDE channel. If you install an LS-120 SuperDisk drive in your system, Dell recommends that you configure the drive for this setting. For instructions on configuring the drive as the master device, see the documentation that accompanied the drive.
Page 36 To install a drive in a 5.25-inch drive bay, perform the following steps: 1. Unpack the drive and prepare it for installation. NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it.
Page 37 1 Bracket tabs (2) 2 Bracket To further ensure proper positioning of the drive in the chassis, insert and tighten all four screws in the order in which the holes are numbered (the holes are marked "1" through "4"). NOTE: The 5.25-inch drive bracket only supports bottom mounted drives. No screw holes are available on the sides of the bracket. ...
Page 38 Use the following guidelines to determine which test to use: If you installed a diskette drive, test it by running all of the subtests in the Diskette Drives test group of the Dell Diagnostics. If you installed a CD-ROM drive, see the documentation that came with the drive for instructions on loading device drivers and using the...
Page 39 If it is an EIDE CD-ROM drive, test it by running all of the subtests in the EIDE CD-ROM Drives test group of the Dell Diagnostics. If you installed a tape drive, perform a tape backup and verification test with the drive as instructed in the documentation that came with the tape drive.
Page 40 1 Hard-disk drive bracket 2 Hinge tabs 3 Drive door handle 4 Drive door 6. Remove the bracket from the drive cage. 7. Slide the drive into the chosen bay of the bracket, orienting it so that the connectors on the back of the drive face the inside of the chassis when the bracket is reinstalled (see Figure 11).
Page 41 22. Partition and logically format your EIDE hard-disk drive using the program(s) offered by your operating system. NOTES: EIDE hard-disk drives must be physically formatted, partitioned, and logically formatted before they can be used to store data. Every hard-disk drive from Dell is physically formatted before it is sent to you. ®...
Page 42 Features" for performance limitations of the secondary controller. SCSI devices installed by Dell are configured correctly during the manufacturing process. You do not need to set the SCSI ID for these devices. If you attach additional optional SCSI devices, refer to the documentation that came with each device for information about setting the appropriate SCSI ID number.
Page 43 See the documentation provided with any optional SCSI device you purchase for information on disabling termination on the device. SCSI Cables The 68-pin (internal) SCSI cable in your system connects SCSI devices to the 7899 Ultra160/M LVD controller. The connector at the end of the cable attaches to the Ultra2/Wide LVD primary SCSI controller connector labeled "SCSI_ULTRA2" on the system board.
Page 44 To test a SCSI hard-disk drive, run the SCSI diagnostics. See your Diagnostics and Troubleshooting Guide for information on running the Dell Diagnostics and troubleshooting any problems that may occur. To test a SCSI tape drive, see the tape drive documentation to perform a tape drive backup and verification test.
Page 45 2. Adjust the switches and controls as specified in the monitor's documentation to correct the video image, including the horizontal and vertical position and size. 3. Insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the Video test group in the Dell Diagnostics.
Page 46 Serial Port 1, Serial Port 2, and Parallel Port options are set to Auto. 2. Insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the Serial/Infrared Ports test group and/or the...
Page 47 If the problem still is not resolved, the system board may be faulty. See "Getting Help" for instructions on obtaining technical assistance. Troubleshooting a Serial I/O Device If the information in "Troubleshooting Basic I/O Functions" indicates that the problem is with a device connected to one of the serial ports, perform the following steps in order until the problem is resolved: 1.
Page 48 Back to Contents Page Getting Help: Dell Precision™ WorkStation 620 Systems User's Guide Help Overview Contacting Dell...
Page 49 Back to Contents Page Glossary: Dell Precision™ WorkStation 620 Systems User's Guide A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P • Q • R • S • T • U • V • W • X • Y • Z ampere(s) alternating current ACPI Advanced Configuration and Power Interface. ACPI enables operating-system-directed power management rather than system BIOS-directed power management.
Page 50 COM (serial) port of a computer. bulletin board service. A computer system that serves as a central location for accessing data or relaying messages by modem. For example, the Dell™ TechConnect BBS contains the latest version of software such as video drivers. If your system has a modem, you can access the BBS and download the most recent version of this software. beep code A diagnostic message in the form of a pattern of beeps from your computer's speaker.
Page 51 byte Eight contiguous bits of information; the basic data unit used by your computer. Celsius C-RIMM continuity Rambus inline memory module. Rambus continuity modules are used to populate empty RIMM slots in some systems. cache To facilitate quicker data retrieval, a storage area for keeping a copy of data or instructions. For example, your computer's BIOS may cache ROM code in faster RAM.
Page 52 Dell Diagnostics A comprehensive set of diagnostic tests for your Dell computer. To use the diagnostics, you must boot your computer from the Dell Diagnostics Diskette. See your Diagnostics and Troubleshooting Guide for more information about using the Dell Diagnostics.
Page 53 Information about the system's components is displayed as a MIF file or through the Dell Inspector program. DMTF Distributed Management Task Force. A consortium of companies representing hardware and software providers, of which Dell Computer Corporation is a member. dots per inch DPMS Display Power Management Signaling.
Page 54 Electromagnetic Compatibility electromagnetic interference expanded memory manager. A utility that uses extended memory to emulate expanded memory on computers with an Intel386™ or higher microprocessor. Expanded Memory Specification EPROM erasable programmable read-only memory electrostatic discharge expanded memory A technique for accessing RAM above 1 MB. To enable expanded memory on your computer, you must use an EMM. You should configure your system to support expanded memory only if you run application programs that can use (or require) expanded memory. expansion bus Your computer contains an expansion bus that allows the microprocessor to communicate with controllers for peripheral devices, such as a network card or an internal modem.
Page 55 foot/feet File Transfer Protocol gram(s) gravities gigabyte(s). A gigabyte equals 1,024 megabytes or 1,073,741,824 bytes. graphics coprocessor See coprocessor. graphics mode A video mode that can be defined as x horizontal by y vertical pixels by z colors. group As it relates to DMI, a group is a data structure that defines common information, or attributes, about a manageable component. graphical user interface hexadecimal.
Page 56 ICES Interface-Causing Equipment Standard (in Canada) ISA Configuration Utility input/output. The keyboard is an input device and a printer is an output device. In general, I/O activity can be differentiated from computational activity. For example, when a program sends a document to the printer, it is engaging in output activity; when the program sorts a list of terms, it is engaging in computational activity.
Page 57 Kbit(s) kilobit(s), 1,024 bits. Kbps kilobit(s) per second key combination A command requiring that you press multiple keys at the same time. For example, you can reboot your computer by pressing the <Ctrl><Alt><Del> key combination. kilogram(s), 1,000 grams. kilohertz, 1,000 hertz. local area network.
Page 58 MB/sec megabytes per second Mbps megabits per second master boot record memory expansion card memory A computer can contain several different forms of memory, such as RAM, ROM, and video memory. Frequently, the word memory is used as a synonym for RAM; for example, an unqualified statement such as "a computer with 16 MB of memory" refers to a computer with 16 MB of RAM. memory address A specific location, usually expressed as a hexadecimal number, in the computer's RAM.
Page 59 Microsoft Disk Operating System MTBF mean time between failures multifrequency monitor A monitor that supports several video standards. A multifrequency monitor can adjust to the frequency range of the signal from a variety of video adapters. millivolt(s) NDIS Network Driver Interface Specification network interface controller ®...
Page 60 A value or option that you specify to a program. A parameter is sometimes called a switch or an argument. partition You can divide a hard-disk drive into multiple physical sections called partitions with the fdisk command. Each partition can contain multiple logical drives.
Page 61 A random-access memory architecture. RAMDAC random-access memory digital-to-analog converter read-only file A read-only file is one that you are prohibited from editing or deleting. A file can have read-only status if: Its read-only attribute is enabled. It resides on a physically write-protected diskette or on a diskette in a write-protected drive. It is located on a network in a directory to which the system administrator has assigned read-only rights to you.
Page 62 A bar code label on the computer that identifies it when you call Dell for customer or technical support. shadowing A computer's system and video BIOS code is usually stored on ROM chips. Shadowing refers to the performance-enhancement technique that copies BIOS code to faster RAM chips in the upper memory area (above 640 KB) during the boot routine.
Page 63 system memory Synonym for RAM. System Setup program A BIOS-based program that allows you to configure your computer's hardware and customize the computer's operation by setting such features as password protection and energy management. Some options in the System Setup program require that you reboot the computer (or the computer may reboot automatically) to effect a hardware-configuration change.
Page 64 Typically, a video adapter comes with video drivers for displaying popular application programs and operating systems in a variety of video modes. On some Dell computers, a video adapter is integrated into the system board. Also available are many video adapter cards that plug into an expansion-card connector.
Page 65 Most VGA and SVGA video adapters include memory chips in addition to your computer's RAM. The amount of video memory installed primarily influences the number of colors that a program can display (with the appropriate video drivers and monitor capability). video mode Video adapters normally support multiple text and graphics display modes.
Page 66 Read-only files are said to be write-protected. You can write-protect a 3.5-inch diskette by sliding its write-protect tab to the open position or by setting the write-protect feature in the System Setup program. World Wide Web extended memory manager. A utility that allows application programs and operating systems to use extended memory in accordance with the XMS.
Page 67 Back to Contents Page Hardware Configuration Features: Dell Precision™ WorkStation 620 Systems User's Guide Overview I/O Ports and Connectors Jumpers—A General Explanation Interrupt Assignments System Board Labels Memory Allocations Overview This section provides specific information about the jumpers on your system board and the input/output (I/O) ports and connectors on the back panel of your computer.
Page 68 Table 1. System Board Jumper Settings Jumper Setting Description RTCRST Resets the RTC clock and CMOS contents when jumpered INTRUDER Intrusion detection disabled. Intrusion detection enabled. PSWD Password features enabled. Password features disabled. jumpered unjumpered NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary. System Board Labels Table 2 lists the labels for connectors and sockets on your system board and gives a brief description of their functions.
Page 69 KYBD/MOUSE Keyboard connector and mouse connector (stacked) Wakeup On LAN card connector LINE-IN Audio line-in jack LINE-OUT Audio line-out jack MEC_A MEC socket (channel A) MEC_B MEC socket (channel B) Microphone jack PANEL Control panel connector PARALLEL/SCSI Parallel port connector (sometimes referred to as LPT1) and SCSI connector (stacked) PCI1, PCI2, PCI3, PCI4 32-bit PCI expansion-card connectors PCI5, PCI6...
Page 70 Serial and Parallel Ports Overview The two built-in serial ports use 9-pin D-subminiature connectors on the back panel. These ports support devices such as external modems, printers, plotters, and mice that require serial data transmission (the transmission of data one bit at a time over one line). Most software uses the term COM (for COMmunications) plus a number to designate a serial port.
Page 71 Printer data bit 1 Printer data bit 2 Printer data bit 3 Printer data bit 4 Printer data bit 5 Printer data bit 6 Printer data bit 7 ACK# Acknowledge BUSY Busy Paper end SLCT Select AFD# Automatic feed ERR# Error INIT# Initialize printer...
Page 72 DPARL SCSI data parity low 49-50 Signal ground 51-52 TRMPWR Terminator power RSVD Reserved Signal ground SCSI attention Signal ground SCSI busy SCSI acknowledge SCSI reset SCSI message SCSI select SCSI command/data SCSI request SCSI in/out SCSI data bit 8 SCSI data bit 9 SCSI data bit 10 SCSI data bit 11...
Page 73 Mouse Connector If you reconfigure your hardware, you may need pin number and signal information for the mouse connector. Figure 8 illustrates the pin numbers for the mouse connector, and Table 7 lists and defines the pin assignments and interface signals for the mouse connector. Figure 8.
Page 74 Signal Definition Supply voltage DATA Data in +DATA Data out Signal ground Microphone Jack You can use the microphone jack (see Figure 11) to attach a standard personal computer microphone. Connect the audio cable from the microphone to the microphone jack. The microphone input is a mono source with maximum signal levels of 130 millivolts root mean squared (mVrms).
Page 75 IRQ Line Used By/Available IRQ0 System timer IRQ1 Keyboard controller IRQ2 Interrupt controller (enables IRQ8 through IRQ15) IRQ3 Serial ports (if enabled in System Setup program) and IRQ4 IRQ5 Available IRQ6 Diskette drive interface IRQ7 Parallel port (if enabled in System Setup program) IRQ8 IRQ9 ACPI...
Page 76 0009FC00-0009FFFF PS/2-mouse data area 000A0000-000BFFFF Video RAM 000C0000-000C7FFF Video BIOS 000C8000-000EFFFF Available 000F0000-000FFFFF System BIOS 00100000-0010FFEF High memory area 0010FFF0-3FFFFFFF Extended memory 40000000-FFFBFFFF Reserved FFFC0000-FFFFFFFF BIOS ROM NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary. Back to Contents Page...
Page 77 World Wide Web The Internet is your most powerful tool for obtaining information about your computer and other Dell products. Through the Internet, you can access most of the services described in this section, including AutoTech, TechFax, order status, technical support, and product information.
Page 78: Sales
TechFax Service Dell takes full advantage of fax technology to serve you better. Twenty-four hours a day, seven days a week, you can call the Dell TechFax line toll- free for all kinds of technical information. Using a touch-tone phone, you can select from a full directory of topics. The technical information you request is sent within minutes to the fax number you designate.
Page 79 Returns that are missing any of the preceding requirements will be refused at our receiving dock and returned to you. Before You Call NOTE: Have your Express Service Code ready when you call. The code helps Dell's automated-support telephone system direct your call more efficiently.
Page 80 Overview Your Dell Precision 620 system supports a variety of internal options that expand system capabilities. This section prepares you to install options inside the computer. It describes how to remove and replace the computer cover and rotate the power supply away from the system board. It also familiarizes you with the internal components that you may handle if you install Dell™ hardware options.
Page 81 2. If you have installed a padlock through the padlock ring on the back panel (see Figure 1), remove the padlock. 3. Slide the padlock ring to the open position. Figure 1. Padlock Installed 1 Security cable slot 2 Padlock ring 4. Facing the left side cover, press the release button (located at the bottom-left corner of the front bezel) and lift the bottom of the cover, allowing it to pivot up toward you (see Figure 2).
Page 82 Figure 3. Replacing the Computer Cover 1 Hook 2 Recessed slot 5. Slide the padlock ring to the closed position. If you are using a padlock to secure your system, reinstall the padlock. 6. Replace the computer cover, reconnect the network cable and phone line if present, reconnect your computer and peripherals to their electrical outlets, and turn them on.
Page 83 1 Card guide (front of chassis) 2 AGP card brace 3 Card brace spring 4 Screw 5 Plastic card guide 6 Slot 7 Tab 3. Slide the card brace forward until it disengages from the slot in the card guide located on the front of the chassis, and then rotate the brace up and lift it away from the chassis.
Page 84 3 Power Supply 4 Cable lock slot 5 Padlock ring (with padlock) 6 AC power receptacle 7 Expansion-card slots 8 Integrated network controller connector 9 Diagnostic LEDs 10 Two USB connectors 11 Audio line-in connector 12 Audio line-out connector 13 Microphone connector 14 PS/2 mouse connector 15 PS/2 keyboard connector 16 Serial port 2 connector...
Page 86 Computer." You need the following items to perform the procedures in this section: The Dell Precision ResourceCD A small flat-blade screwdriver and a #1 Phillips-head screwdriver (or quarter-inch hex-nut driver) Your system also includes an interior system service label affixed to the inside of the computer cover (see Figure 1 for the location of this label).
Page 87 9. Replace the computer cover, and reconnect the system to an electrical outlet. Also, reconnect any telephone or telecommunication cables to the computer. 10. Insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the System Board Devices test group in the Dell Diagnostics.
Page 88 Replace the computer cover, reconnect the system to an electrical outlet, and reconnect any telephone or telecommunication cables. 6. Insert the Dell Precision ResourceCD into the CD-ROM drive, and reboot the system. 7. Run the System Board Devices test group in the Dell Diagnostics.
Page 89 Replace the computer cover, reconnect the system to an electrical outlet, and turn it on. 4. If the problem is not resolved, insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the RAM test group in the Dell Diagnostics.
Page 90 1. Check the monitor cable connections as indicated in "Checking Connections and Switches." 2. If the problem is not resolved, insert the Dell Precision ResourceCD into the CD-ROM drive, and reboot the system. Run the Video test group in the Dell Diagnostics.
Page 91 6. Insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the appropriate test group in the Dell Diagnostics. If the Dell Diagnostics identifies a faulty drive, replace the drive. If the Dell Diagnostics identifies a faulty controller, the system board may be faulty. See "Getting Help"...
Page 92 Dual-processor capability. The system can be purchased with two processors. If your system has one processor, you can install a second Intel Pentium III Xeon processor (operating at the same speed as the installed processor), which you can purchase as a kit from Dell. Dual ®...
Page 93 (NIC) with Remote Wake Up support. The following software is included with your Dell™ computer system: NOTE: Backup copies of most drivers for your system are included on the Dell Precision ResourceCD. If you need to reinstall any of these drivers, see the documentation that accompanies the CD. Utilities that safeguard the system and enhance the operation of its hardware features; for example, the AutoShutdown service lets you perform an orderly shutdown with a single touch of the power button.
Page 94 Important Note to Microsoft Windows NT 4.0 Users Your system was configured by Dell to optimize the features of your computer and of the Microsoft Windows NT 4.0 operating system. If you need to reinstall this operating system, you must install several supplemental items to return the system to its full functionality. See the appropriate subsection that follows for your operating system.
Page 95 ¡ before turning off. If the Dell AutoShutdown service is not operational, the system turns off without writing unsaved data to the disk. This could result in loss of data. In Windows 2000, the system performs an orderly operating system shutdown before turning off. However, the power button can ¡...
Page 96 Dell recommends that you attach external devices only while the computer is turned off unless you are instructed otherwise in the documentation for the particular device. Then turn the computer on before turning on any external devices unless the documentation for the device specifies otherwise.
Page 97 Getting Help If at any time you do not understand a procedure described in this guide or if the system does not perform as expected, Dell provides a number of tools to help you. For more information on these help tools, see "Getting...
Page 98 Back to Contents Page Messages and Codes: Dell Precision™ WorkStation 620 Systems User's Guide Overview Diagnostics Messages System Messages Diagnostic LEDs System Beep Codes SNMP Platform Event Traps Warning Messages Overview Your application programs, operating system, and the computer itself are capable of identifying problems and alerting you to them. When a problem occurs, a message may appear on your monitor screen or a beep code may sound.
Page 99 Alert! Previous Secondary processor exceeded its recommended Ensure an operational processor fan is installed, temperature failure operating temperature range during the previous connected to the system board, and that chassis at Processor 1. operating session. ventilation slots are not blocked. System voltage exceeded or fell below acceptable "Troubleshooting the System Board."...
Page 100 Diskette subsystem The diskette drive controller may be faulty. Run the Diskette tests in the Dell Diagnostics. reset failed No diskette is in the drive. The operation requires a Put a diskette in the drive or close the drive latch.
Page 101 Dell Diagnostics. POST has queried the EIDE drive for status When your computer finishes booting, immediately WARNING:Dell's Disk information. The drive has returned a parameter from back up your data and replace your hard-disk drive. Monitoring System the call that indicates it has detected possible error Restore the data to the replaced drive.
Page 102 The beep code is a pattern of sounds: for example, one beep, followed by a second beep, and then a burst of three beeps (code 1-1-3) means that the computer was unable to read the data in nonvolatile random-access memory (NVRAM). This information is invaluable to the Dell support staff if you need to call for technical assistance.
Page 103 4-4-3 Math-coprocessor test failure Run the System Board Devices tests in the Dell Diagnostics. 4-4-4 Cache test failure Run the System Board Devices tests in the Dell Diagnostics. 5-2-2-1 Mismatch RDRAM device count; unsupported Replace RIMM pair with supported matching device count.
Page 104 Computer" for procedures you need to complete prior to performing the suggested resolution. If the problem persists after you perform the suggested problem resolution(s), contact Dell Technical Support for further help. Table 4 lists the codes for the back panel diagnostic LEDs, probable causes, and suggested corrective actions. The LED patterns are shown as they appear on the back of your mini tower chassis.
Page 105 Possible system board resource Remove any internal options recently added, and restart the system conflict to retest Normal operating condition after None. POST System Board LEDs The system board contains a number of LEDs that tell you the state of the CPUs, memory, and logic circuitry. CAUTION: Before servicing any components inside your computer, see "Safety First—For You and Your Computer."...
Page 106 This section also provides instructions for configuring the NIC under Microsoft Windows NT 4.0. ® NOTE: The NIC drivers for systems running a Dell-installed Windows 2000 operating system are automatically detected and installed. The NIC connector on the computer's back panel (see Figure 1) has the following indicators: A link-integrity indicator, which lights up when there is a good connection between the network and the NIC.
Page 107 System Setup program. Configure the NIC and install the network driver. 4. Run the Network Interface Test Group in the Dell Diagnostics to verify that the NIC is operating properly. "Starting the Dell Diagnostics" for detailed instructions. Network Cable Requirements The network adapter connector attaches an unshielded twisted pair (UTP) Ethernet cable to your computer.
Page 108 Temporary file. Delete before release. Using the Integrated Audio Controller: Dell Precision WorkStation 620 Systems User's Guide Basic Checks: Dell Precision WorkStation 620 Systems User's Guide Installing System Board Options: Dell Precision WorkStation 620 Systems User's Guide Contacting Dell: Dell [document title]...
Page 109 These can be enhanced integrated drive electronics (EIDE) or SCSI devices. NOTICE: Your hard-disk drive subsystem must consist of either SCSI hard-disk drives or EIDE hard-disk drives. Dell does not support a mix of both types of hard-disk drives.
Page 110 Installing SCSI Drivers Dell installed the SCSI drivers for your system on your system's hard-disk drive. Backup copies of these drivers are provided on the Dell Precision ResourceCD. If your system's SCSI drivers are ever inadvertently erased or corrupted, you must reinstall them. For instructions on reinstalling these drivers, refer to the documentation that came with your Dell Precision Resource CD.
Page 111 Back to Contents Page System Setup Options: Dell Precision™ WorkStation 620 Systems User's Guide AC Power Recovery Primary Video Controller Asset Tag Remote Wake Up Auto Power On Report Keyboard Errors Boot Sequence Second Processor CPU Information System Data Diskette Drive A and Diskette Drive B System Date Integrated Devices...
Page 112 Selecting MBA causes the system to prompt you to press <Ctrl><Alt><b> at the Dell logo screen during boot. A menu then appears that allows you to select PXE, RPL, BootP, or NetWare as the active boot mode. If a boot routine is not available from the network server, the system tries to boot from the next device in the boot sequence list.
Page 113 MBA, which means that the NIC is enabled and set to boot the system remotely from a network server. If you select On w/ MBA, you are prompted to press <Ctrl><Alt><b> at the Dell logo screen during boot. A menu then appears that allows you to select PXE, RPL, BootP, or NetWare as the active boot mode.
Page 114 NOTE: Do not set Parallel Port to 278h if you have an Extended Capabilities Port (ECP) device connected to the port. DMA Channel This option determines the direct memory access (DMA) channel used by the parallel port and appears only when Mode is set to ECP.
Page 115 CD-ROM and EIDE tape drives. NOTES: For all devices obtained from Dell that use the integrated EIDE controller, set the appropriate Drive option to Auto. You must have an EIDE device connected to the primary EIDE interface if you have an EIDE device connected to the secondary EIDE interface.
Page 116 The system's five-character service tag number, which was programmed into NVRAM by Dell during the manufacturing process. Refer to this number during technical assistance or service calls. The service tag number is also accessed by certain Dell support software, including the diagnostics software.
Page 117 Chassis Intrusion CPU Serial Number Press <Enter> to configure these options as explained in the following subsections. System Password System Password displays the current status of your system's password security feature and allows you to assign and verify a new password. No one can assign a new password unless the current status is Not Enabled, which is displayed in bright characters.
Page 118 selected, the system provides the processor serial number(s) to programs that request it. When Disabled is selected, the system never provides the processor serial number(s). The default is Disabled. System Time System Time resets the time on the computer's internal clock. Time is kept in a 24-hour format (hours:minutes:seconds).
Page 119 Back to Contents Page Software Checks: Dell Precision™ WorkStation 620 Systems User's Guide Overview Program Conflicts Installing and Configuring Software Memory Address Conflicts Error Messages Interrupt Assignment Conflicts Input Errors Overview Because most computers have several application programs installed in addition to the operating system, isolating a software problem can be confusing.
Page 120 Program Conflicts Some application programs may leave portions of their setup information behind, even though you have exited from them. As a result, other application programs cannot run. Rebooting your system can confirm whether or not these programs are the cause of the problem. Application programs that use specialized subroutines called device drivers can also cause problems with your computer system.
Page 121 MHz. A slower compatibility speed can be set through the System Setup program. See your System Setup screens to identify your system's speed. NOTE: Dell Precision WorkStation 620 systems support 2.8-V processor cartridges only. Internal cache 32 KB first-level (16-KB data cache; 16-KB instruction cache)
Page 122 Architecture RDRAM technology Memory slots 8 RIMMs (4 on each MEC) Memory module capacities 64-, 128-, 256-, and 512-MB 800 MHz with ECC BIOS address F000:0000h-F000:FFFFh Drives Externally accessible bays: one 3.5-inch bay for a 3.5-inch diskette drive; three 5.25-inch bays for removable media devices Internally accessible bays: four 3.5-inch bays for up to four 1-inch-high hard-disk drives, up to three 1.6-inch-high hard-...
Page 123 Key Combinations <Ctrl><Alt><Del> functions differently depending on your operating system; see your operating system documentation <F2> or <Ctrl><Alt><Enter> starts embedded System Setup program (during POST only) <F3> or <F12> automatically starts the system from the network environment specified by the MBA rather than from one of the devices in the System Setup Boot Sequence option <F10>...
Page 124 Maximum vibration: Operating 0.25 gravities (G) at 3 to 200 Hz at 1 octave/min Storage 0.5 G at 3 to 200 Hz at 1 octave/min Maximum shock: Operating bottom half-sine pulse with a change in velocity of 50.8 cm/sec (20 inches/sec) Storage 27-G faired square wave with a velocity change of 508 cm/sec (200 inches/sec) Altitude:...
Page 125 Back to Contents Page System Setup: Dell Precision™ WorkStation 620 Systems User's Guide Using System Setup System Setup Options Back to Contents Page...
Page 126 Dell has set up your system for optimal operation, and under most circumstances you should not have to change any of the settings. After you set up your system, run System Setup to familiarize yourself with your system configuration information and optional settings in case you need to change them.
Page 127 NOTICE: The password features provide a basic level of security for the data on your system. However, they are not foolproof. If your data requires more security, it is your responsibility to obtain and use additional forms of protection, such as data encryption programs. Your Dell™ system is shipped to you without the system password feature enabled. If system security is a concern, you should operate your system only with system password protection. You can assign a system password whenever you use the System Setup program.
Page 128 NOTICE: If you leave your system running and unattended without having a system password assigned or if you leave your computer unlocked so that someone can disable the password by changing a jumper setting, anyone can access the data stored on your hard-disk drive.
Page 129 Assign a system password. Using the Setup Password Feature Your Dell system is shipped to you without the setup password feature enabled. If system security is a concern, you should operate your system with setup password protection. You can assign a setup password whenever you use the System Setup program.
Page 130 If Setup Password is set to Enabled, you must enter the correct setup password before you can modify the majority of the System Setup options. When you start the System Setup program, Page 2 of the System Setup screens appears with Setup Password highlighted, prompting you to type the password.
Page 131 Back to Contents Page Troubleshooting: Dell Precision™ WorkStation 620 Systems User's Guide Basic Checks Messages and Codes Software Checks Diagnostics External Components Getting Help Internal Components Back to Contents Page...

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