Dell OptiPlex 790 Owner's Manual
  1. Manuals
  2. Brands
  3. Dell Manuals
  4. Desktop
  5. OptiPlex 790
  6. Owner's manual

Dell OptiPlex 790 Owner's Manual

Small form factor
Hide thumbs Also See for OptiPlex 790:
Table of Contents

Advertisement

Quick Links

See also: Service Manual , Setup and Features Information
Dell OptiPlex 790 Small Form Factor
Owner's Manual
Regulatory Model D03S
Regulatory Type D03S001

Advertisement

Table of Contents
loading

Related Manuals for Dell OptiPlex 790

Summary of Contents for Dell OptiPlex 790

  • Page 1 Dell OptiPlex 790 Small Form Factor Owner's Manual Regulatory Model D03S Regulatory Type D03S001...

  • Page 2: Notes, Cautions, And Warnings

    Information in this publication is subject to change without notice. © 2011 Dell Inc. All rights reserved. Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks used in this text: Dell...

  • Page 3: Table Of Contents

    Contents Notes, Cautions, and Warnings..............2 1 Working on Your Computer..............7 ................7 Before Working Inside Your Computer ......................8 Recommended Tools ....................8 Turning Off Your Computer ................9 After Working Inside Your Computer 2 Cover......................11 ......................11 Removing the Cover ......................11 Installing The Cover 3 Front Bezel....................13 ....................13 Removing the Front Bezel...
  • Page 4 .....................22 Installing The Memory 8 Chassis Intrusion Switch................23 ................23 Removing the Chassis Intrusion Switch ..................24 Installing The Intrusion Switch 9 Speaker......................25 ....................25 Removing the Speaker .....................26 Installing The Speaker 10 Heat Sink And Processor..............27 ................27 Removing the Heat Sink and Processor .................30 Installing The Heat Sink And Processor 11 Coin-Cell Battery..................31...
  • Page 5 System Setup ........................55 Boot Menu ....................55 Boot Menu Enhancements ....................56 Timing Key Sequences ........................56 Navigation .....................57 System Setup Options 20 Troubleshooting..................67 ......................67 Diagnostic LEDs ........................74 Beep Codes .......................77 Error Messages 21 Specifications..................85 ....................85 Technical Specifications 22 Contacting Dell..................95 ........................95 Contacting Dell...

  • Page 7: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 8: Recommended Tools

    To avoid damaging your computer, perform the following steps before you begin working inside the computer. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. Turn off your computer (see Turning Off Your Computer). CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.

  • Page 9: After Working Inside Your Computer

    Connect any telephone or network cables to your computer. Connect your computer and all attached devices to their electrical outlets. Turn on your computer. Verify that the computer works correctly by running the Dell Diagnostics.

  • Page 11: Cover

    Cover Removing the Cover Before Working Inside Your Computer . Follow the procedures in Pull up the cover-release latch at the side of the computer. Lift the cover upward to a 45–degree angle and remove it from the computer. Installing The Cover Place the computer cover on the chassis.

  • Page 13: Front Bezel

    Front Bezel Removing the Front Bezel Before Working Inside Your Computer . Follow the procedures in cover . Remove the Pry the front bezel retention clips away from the chassis. Rotate the bezel away from the computer to release the hooks on the opposite edge of the bezel from the chassis.

  • Page 14: Installing The Front Bezel

    Installing The Front Bezel Insert the four hooks along the bottom edge of the front bezel into the slots on the chassis front. Rotate the bezel toward the computer to engage the front bezel retention clips until they click into place. cover .

  • Page 15: Expansion Card

    Expansion Card Removing the Expansion Card Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the Rotate the release tab on the card-retention latch upward. Pull the release lever away from the PCIe x16 card until you release the securing tab from the dent in the card.

  • Page 16: Installing The Expansion Card

    Installing The Expansion Card Insert the PCIe x4 card into the connector on the system board and press down to secure it in place. Insert the PCIe x16 card (if any) into the connector on the system board and press down to secure it in place. front bezel .

  • Page 17: Optical Drive

    Optical Drive Removing the Optical Drive Before Working Inside Your Computer . Follow the procedures in cover . Remove the Remove the data cable and power cable from the back of the optical drive. Lift the blue tab and slide the optical drive inwards to remove it from the computer.

  • Page 18: Installing The Optical Drive

    Installing The Optical Drive Insert the optical drive into the bracket. Lift the blue tab and slide the optical drive outwards to insert it into the computer. Connect the data cable and power cable to the optical drive. cover . Install the After Working Inside Your Computer .

  • Page 19: Hard Drive

    Hard Drive Removing the Hard Drive Before Working Inside Your Computer . Follow the procedures in cover . Remove the Remove the hard drive from the chassis. Press the retention clips inwards and slide the hard-drive bracket from the drive cage. Flex the hard-drive bracket and then remove the single 3.5 inch hard drive or two 2.5 inch hard drives from the bracket.

  • Page 20: Installing The Hard Drive

    Release the screws that secure the 2.5 inch hard drive to the underside of the hard-drive bracket. Installing The Hard Drive Tighten the screws to secures the two hard drives to the hard drive bracket. Flex the hard-drive bracket and then insert the single hard drive or two hard drives into the bracket.

  • Page 21: Memory

    Memory Removing the Memory Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the Release the memory-retention clips on each side of the memory modules. Lift the memory modules out of the connectors on the system board.

  • Page 22: Installing The Memory

    Installing The Memory Insert the memory modules into the connectors on the system board. Install the memory modules in the order of A1 > B1 > A2 > B2. Press down on the memory modules until the retention clips spring back to secure them in place.

  • Page 23: Chassis Intrusion Switch

    Chassis Intrusion Switch Removing the Chassis Intrusion Switch Before Working Inside Your Computer . Follow the procedures in cover . Remove the Disconnect the intrusion-switch cable from system board. Slide the intrusion switch inwards and remove it from the system board.

  • Page 24: Installing The Intrusion Switch

    Installing The Intrusion Switch Insert the intrusion switch into the chassis rear and slide it outward to secure it. Connect the intrusion-switch cable to the system board. cover . Install the After Working Inside Your Computer . Follow the procedures in...

  • Page 25: Speaker

    Speaker Removing the Speaker Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the Disconnect the speaker cable from the system board. Unthread the speaker cable from the fan shelter clip. Press the speaker securing tab, and slide the speaker towards the right of the computer to release it.

  • Page 26: Installing The Speaker

    Remove the speaker from the chassis. Installing The Speaker Place the speaker on the appropriate location of the chassis rear. Press the speaker-securing tab and slide the speaker towards the left of the computer to secure it. Thread the internal speaker cable into the fan shelter clip. Connect the speaker cable to the system board.

  • Page 27: Heat Sink And Processor

    Heat Sink And Processor Removing the Heat Sink and Processor Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the Disconnect the heat-sink assembly cable from the system board. Release the Input/Output Board or the FlyWire cable from the routing channel on the heat sink.
  • Page 28 Lift the heat sink assembly upwards, and remove it from the computer. Lay the assembly with the fan facing downwards, and with the thermal grease facing upwards. Press the release lever down and then move it outward to release it from the retention hook that secures it.
  • Page 29 11. Lift the processor to remove it from the socket and place it in an antistatic package.

  • Page 30: Installing The Heat Sink And Processor

    Installing The Heat Sink And Processor Insert the processor into the processor socket. Ensure the processor is properly seated. Lower the processor cover. Press the release lever down and then move it inward to secure it with the retention hook. Place the heat sink assembly into the chassis.

  • Page 31: Coin-Cell Battery

    Coin-Cell Battery Removing the Coin-Cell Battery Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the Press the coin-cell battery inward to allow the battery to pop up from the socket. Lift the coin-cell battery out of the computer.

  • Page 32: Installing The Coin-Cell Battery

    Installing The Coin-Cell Battery Place the coin-cell battery into its slot on the system board. Press the coin-cell battery downwards till it is secured. front bezel . Install the cover . Install the After Working Inside Your Computer . Follow the procedures in...

  • Page 33: Power-Switch Cable

    Power-Switch Cable Removing the Power-Switch Cable Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the Disconnect the power-switch cable from the system board. Unthread the power-switch cable from the chassis clip. Pry the power-switch cable away from the chassis.

  • Page 34: Installing The Power-Switch Cable

    Slide the power-switch cable out through the front of the computer. Installing the Power-Switch Cable Slide the power-switch cable in through the front of the computer. Secure the power-switch cable to the chassis. Thread the power-switch cable into the chassis clip. Connect the power-switch cable to the system board.

  • Page 35: System Fan

    System Fan Removing the System Fan Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the fan shelter . Remove the Disconnect the fan cable from the system board. Slide the grommets inward along the groove and pass through the chassis.

  • Page 36: Installing The System Fan

    Pry up the grommets from the system fan and remove it. Installing The System Fan Insert the four grommets into the system fan. Place the system fan in the chassis. Pass the four grommets through the chassis and slide outward along the grooves to secure them in place.

  • Page 37: Input/Output Panel

    Input/Output Panel Removing The Input/Output (I/O) Panel Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the Unthread the I/O panel or the FlyWire cable from the fan-shelter clip and heat sink.
  • Page 38 Slide the I/O panel towards the right of the computer to release it from the chassis. Remove the I/O panel.

  • Page 39: Installing The Input/Output (I/O) Panel

    Installing The Input/Output (I/O) Panel Insert the I/O panel into the slot on the chassis front. Slide the I/O panel towards the left of the computer to secure to the chassis. Tighten the screw to secure the I/O panel to the chassis. Connect the I/O panel or the FlyWire cable to the system board.

  • Page 41: Power Supply

    Power Supply Removing the Power Supply Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the fan shelter . Remove the Disconnect the 4-pin power cable from the system board. Unthread the 4–pin power cable from the chassis clips.
  • Page 42 Remove the screws that secure the power supply, from the back of the computer. 10. Push in on the blue release tab beside the power supply, and slide the power supply towards the front of the computer. 11. Lift the power supply out of the computer.

  • Page 43: Installing The Power Supply

    Installing The Power Supply Place the power supply in the chassis and slide outward to secure it. Tighten the three screws securing the power supply to the back of the computer. Connect the power cable to the system board. Thread the power cable into the chassis clips. Connect the power cable to the system board.

  • Page 45: System Board

    System Board Removing the System Board Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the drive cage . Remove the expansion cards . Remove the heat sink and processor . Remove the fan shelter .
  • Page 46 10. Remove the screws that secure the system board to the chassis. 11. Remove the 7–mm hex screw that secures the system board to the chassis. 12. Slide the system board towards the front of the computer. 13. Remove the system board from the chassis.

  • Page 47: Installing The System Board

    Installing The System Board Align the system board to the port connectors on the rear of the chassis and place the system board in the chassis. Tighten the 7–mm hex screw securing the system board to the chassis. Tighten the screws securing the system board to the chassis. Close the expansion card latch.

  • Page 49: Drive Cage

    Drive Cage Removing the Drive Cage Before Working Inside Your Computer . Follow the procedures in cover . Remove the front bezel . Remove the Remove the data cable and power cable from the back of the optical drive. Slide the drive-cage handle toward the back of the computer into the unlocked position.
  • Page 50 Remove the data cable and power cable from the back of the hard drive. Remove the drive cage from the computer.

  • Page 51: Installing The Drive Cage

    Installing The Drive Cage Place the drive cage on the edge of the computer to allow access to the cable connectors on the hard drive. Connect the data cable and power cable to the back of the hard drive. Flip over the drive cage and insert it into the chassis. The drive cage tabs are secured by the slots in the chassis.

  • Page 53: Fan Shelter

    Fan Shelter Removing the Fan Shelter Before Working Inside Your Computer . Follow the procedures in cover . Remove the Unthread the cables in the fan shelter clip. Lift the fan shelter free from the computer. Installing The Fan Shelter Insert the fan shelter into the computer.

  • Page 55: System Setup

    System Setup System Setup This computer offers you the following options: • Access System Setup by pressing <F2> • Bring up a one-time boot menu by pressing <F12> Press <F2> to enter System Setup and make changes to the user-definable settings.

  • Page 56: Timing Key Sequences

    When you enter the <F12> or <Ctrl><Alt><F8> keystroke correctly, the computer beeps. The key sequence invokes the Boot Device Menu. Since the one-time boot menu only affects the current boot, it has the added benefit of not requiring the technician to restore the customer's boot order after completing troubleshooting.

  • Page 57: System Setup Options

    Action Keystroke Expand and collapse field <Enter>, left- or right-arrow key, or +/– Expand or collapse all fields < > Exit BIOS <Esc> — Remain in Setup, Save/Exit, Discard/Exit Change a setting Left or right-arrow key Select field to change <Enter>...
  • Page 58 General • SATA • CD/DVD/CD-RW Drive Boot List Option • Legacy • UEFI Date/Time Allows you to set the date and time. Changes to the system date and time take effect immediately. System Configuration Integrated NIC Allows you to enable or disable the integrated network card. You can set the integrated NIC to: •...
  • Page 59 System Configuration • Disabled = The SATA controller is hidden Drives Allows you to enable or disable the various on-board drives: • SATA-0 • SATA-1 • SATA-2 • SATA-3 Smart Reporting This field controls whether hard drive errors for integrated drives are reported during system startup.
  • Page 60 Video NOTE: The Video setting will only be visible when a video card is installed in the system. Security Allows you to set, change, or delete the password on the Internal HDD-1 system's internal hard disk drive (HDD). Successful changes to Password this password take effect immediately.
  • Page 61 Security Allow Non-Admin Password Changes — This option is enabled by default. Non-Admin Setup This option lets you determine whether changes to the setup Changes option are permitted when an administrator password is set. Allow Wireless Switch Changes — This option is disabled by default.
  • Page 62 Security • Enable — User may enter OROM configuration screens via the hotkey. • One-Time Enable — User may enter OROM configuration screens via the hotkeys on next boot only. After next boot, the setting will revert to disabled. • Disable —...
  • Page 63 Power Management • Power On • Last State Auto On Time Allows you to set the option to automatically turn on the computer. Time is kept in standard 12-hour format (hour:minutes:seconds). Change the startup time by typing the values in the time and AM/PM fields. NOTE: This feature does not work if you turn off your computer using the switch on a power strip or surge protector or if Auto Power is set to disabled.
  • Page 64 POST Behavior Keyboard Errors Allows you to enable or disable the keyboard error reporting when the computer starts. This option is enabled by default. POST Hotkeys Allows you to specify the function keys to display on the screen when the computer starts. Enable F12 —...
  • Page 65 Image Server Lookup Method Specifies how the ImageServer looks up the server address. • Static IP • DNS (enabled by default) NOTE: This field is only relevant when the "Integrated NIC" control in the "System Configuration" group is set to "Enabled with ImageServer".
  • Page 66 Image Server NOTE: This field is only relevant when the "Integrated NIC" control in the "System Configuration" group is set to "Enabled with ImageServer" and when "Client DHCP" is set to "Static IP". Client Gateway Specifies the gateway IP address for the client. The default setting is 255.255.255.255.

  • Page 67: Troubleshooting

    Troubleshooting Diagnostic LEDs NOTE: The diagnostic LEDs only serve as an indicator of the progress through the Power-on Self-Test (POST) process. These LEDs do not indicate the problem that caused the POST routine to stop. The diagnostic LEDs are located on the front of the chassis next to the power button.
  • Page 68 • Ensure that the main power cable and front panel cable are securely connected to the system board. Power Button Problem Description A possible system board failure has occurred. Troubleshooting Steps Unplug the computer. Allow one minute for the power to drain.
  • Page 69 Power Button Problem Memory modules are detected, but a memory power Description failure has occurred. Troubleshooting • If two or more memory modules are installed, remove Steps the modules, then re-install one module and re-start the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.
  • Page 70 add the peripheral cards back one by one until you find the bad one. Power Button Problem Description Power connector not installed properly. Troubleshooting Steps Re-seat the 2x2 power connector from the power supply unit. Power Button Problem Description Possible peripheral card or system board failure has occurred.
  • Page 71 • If the problem persists, the system board is faulty. Power Button Problem Description A possible coin cell battery failure has occurred. Troubleshooting Steps Remove the coin cell battery for one minute, reinstall the battery, and restart. Power Button Problem Description A possible processor failure has occurred.
  • Page 72 • If available, install working memory of the same type into your computer. Power Button Problem Description A possible hard drive failure has occurred. Troubleshooting Steps Re-seat all power and data cables. Power Button Problem Description A possible USB failure has occurred. Troubleshooting Steps Re-install all USB devices and check all cable connections.
  • Page 73 • If available, install working memory of the same type into your computer. Power Button Problem Description Memory modules are detected, but a memory configuration or compatibility error has occurred. Troubleshooting Steps • Ensure that no special requirements for memory module/connector placement exist.

  • Page 74: Beep Codes

    Power Button Problem Description A possible system board resource and/or hardware failure has occurred. Troubleshooting • Clear CMOS. Steps • Disconnect all internal and external peripherals, and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one.
  • Page 75 each set of beeps is 3 sec, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will jump out from looping and execute the normal shutdown process and power system.
  • Page 76 Code 3-2-2 Cause Interrupt vector loading failure Code 3-2-4 Cause Keyboard Controller Test failure Code 3-3-1 Cause NVRAM power loss Code 3-3-2 Cause NVRAM configuration Code 3-3-4 Cause Video Memory Test failure Code 3-4-1 Cause Screen initialization failure Code 3-4-2 Cause Screen retrace failure Code...

  • Page 77: Error Messages

    Description The BIOS found a faulty disk sector or could not find a particular disk sector. Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving this problem, please note this checkpoint and contact Dell Technical Support. Description The computer failed to complete the boot routine three consecutive times for the same error.
  • Page 78 Alert! Security override Jumper is installed. Description The MFG_MODE jumper has been set and AMT Management features are disabled until it is removed. Attachment failed to respond Description The floppy or hard drive controller cannot send data to the associated drive. Bad command or file name Description Ensure that you have spelled the command correctly, put spaces in the proper place, and used the correct pathname.
  • Page 79 Diskette subsystem reset failed Description The floppy drive controller may be faulty. Gate A20 failure Description One or more memory modules may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them. General failure Description The operating system is unable to carry out the command. This message is usually followed by specific information—for example, Printer out of paper.
  • Page 80 Memory address line failure at address, read value expecting value Description A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them. Memory allocation error Description The software you are attempting to run is conflicting with the operating system, another program, or a utility.
  • Page 81 No timer tick interrupt Description A chip on the system board might be malfunctioning. Non-system disk or disk error Description The floppy disk in drive A does not have a bootable operating system installed on it. Either replace the floppy disk with one that has a bootable operating system, or remove the floppy disk from drive A and restart the computer.
  • Page 82 Description The keyboard controller may be malfunctioning or a memory module may be loose. WARNING: Dell's Disk Monitoring System has detected that drive [0/1] on the [primary/secondary] EIDE controller is operating outside of normal specifications. It is advisable to immediately back up your data and replace your hard drive by calling your support desk or Dell.
  • Page 83 Write fault on selected drive Description The operating system cannot write to the floppy or hard drive. X:\ is not accessible. The device is not ready Description The floppy drive cannot read the disk. Insert a floppy disk into the drive and try again.

  • Page 85: Specifications

    Specifications Technical Specifications NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start (or Start in Windows XP) Help and Support, and then select the option to view information about your computer. Processor Processor type •...
  • Page 86 Memory Capacity 1 GB, 2 GB, and 4 GB Minimum Memory 1 GB Maximum memory Desktop, Mini-Tower, Small Form 16 GB Factor Ultra Small Form Factor 8 GB Video Integrated • Intel HD Graphics • Intel HD Graphics 2000 Discrete PCI Express x16 graphics adapter Video memory up to 1.7 GB shared video memory...
  • Page 87 Cards Mini-Tower up to one full-height card Desktop up to one low-profile card Small Form Factor none Ultra Small Form Factor none PCI Express x16 (with support for PCI-Express x1) Mini-Tower up to one full-height cards Desktop up to one low-profile cards Small Form Factor up to one low-profile cards Ultra Small Form Factor...
  • Page 88 Drives Small Form Factor Ultra Small Form Factor none 2.5–inch SATA drive bays Mini-Tower Desktop Small Form Factor Ultra Small Form Factor External Connectors Audio: Back Panel two connectors for line-out and line-in/ microphone Front Panel two connectors for microphone and headphone Network Adapter one RJ45 connector...
  • Page 89 System Board Connectors PCI 2.3 data width (maximum) — 32 bits Mini-Tower, Desktop one 120-pin connector Small Form Factor, Ultra Small Form none Factor PCI Express x1 data width (maximum) — one PCI Express lane Mini-Tower, Desktop, Small Form one 164-pin connector Factor Ultra Small Form Factor none...
  • Page 90 System Board Connectors Front panel control Mini-Tower, Desktop, Small Form one 34-pin connector Factor Ultra Small Form Factor one 20-pin connector Desktop, Small Form Factor, Ultra two 2-pin connectors Small Form Factor Processor one 1155-pin connector Processor Fan one 5-pin connector Power connector Mini-Tower, Desktop, Small Form one 34-pin connector...
  • Page 91 Controls and Lights Orange — a good 100 Mbps connection exists between the network and the computer. Yellow — a good 1000 Mbps connection exists between the network and the computer. Off (no light) — the computer is not detecting a physical connection to the network.
  • Page 92 Power Wattage Maximum Voltage Heat Dissipation Coin-cell 3 V CR2032 lithium coin cell battery Physical Height Width Depth Weight Mini-Tower 36.00 cm 17.50 cm (6.89 41.70 cm (16.42 8.87 kg (19.55 lb) (14.17 inches) inches) inches) Desktop 36.00 cm 10.20 cm (4.01 41.00 cm (16.14 7.56 kg (16.67 lb) (14.17 inches)
  • Page 93 Environmental Operating –15.2 m to 3048 m (–50 ft to 10,000 ft) Storage –15.2 m to 10,668 m (–50 ft to 35,000 ft) Airborne contaminant level G1 or lower as defined by ANSI/ISA- S71.04-1985...

  • Page 95: Contacting Dell

    Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Visit support.dell.com.

This manual is also suitable for:

Optiplex 790 mini-tower

Table of Contents