Dell OptiPlex 980 Desktop Service Manual
Dell™OptiPlex™980ServiceManual—Desktop
Notes, Cautions, and Warnings
IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft®Windows®operating systems are not applicable.
Information in this document is subject to change without notice.
©2010DellInc.Allrightsreserved.
Reproduction of this material in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
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 Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
May2010Rev.A00
Working on Your Computer
Specifications
Removing and Replacing Parts
System Board Layout
System Setup
Diagnostics
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Trademarks used in this text: Dell, the DELL logo, and OptiPlex are trademarks of Dell Inc.; Intel, Pentium, and Core are either trademarks or
registered trademarks of Intel Corporation; Microsoft, Windows, Windows Vista, and the Windows Vista start button are either trademarks or
registered trademarks of Microsoft Corporation in the United States and/or other countries.
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System Setup
Dell™OptiPlex™980ServiceManual—Desktop
Boot Menu
Navigation Keystrokes
Entering System Setup
System Setup Menu Options
Boot Menu
Press<F12>or<Ctrl><Alt><F8>whentheDell™logoappearstoinitiateaone-time boot menu with a list of the valid boot devices for the system.
The options listed are:
Onboard SATA Hard Drive
Onboard or USB CD-ROM Drive
System Setup
Diagnostics
This menu is useful when you are attempting to boot to a particular device or to bring up the diagnostics for the system. Using the boot menu does not make
any changes to the boot order stored in the BIOS.
Navigation Keystrokes
Use the following keystrokes to navigate the System Setup screens.
Entering System Setup
Your computer offers the following BIOS and System Setup options:
l Bring up a one-time boot menu by pressing <F12>
l Access System Setup by pressing <F2>
<F12> Menu
Press<F12>whentheDell™logoappearstoinitiateaone-time boot menu with a list of the valid boot devices for the computer. Diagnostics and Enter Setup
options are also included in this menu. The devices listed on the boot menu depend on the bootable devices installed in the computer. This menu is useful
when you are attempting to boot to a particular device or to bring up the diagnostics for the computer. Making changes in the boot menu does not make any
changes to the boot order stored in the BIOS.
<F2>
Press <F2> to enter System Setup and make changes to user-definable settings. If you have trouble entering System Setup using this key, press <F2> when
the keyboard lights first flash.
System Setup Menu Options
Navigation Keystrokes
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>
Cancel modification
<Esc>
Reset defaults
<Alt><F> or Load Defaults menu option
NOTE: System Setup options may vary depending on your computer and may not appear in the exact same order.
General
System
Board
Displays the following information:
l System information: Displays BIOS Version, Service Tag, Express Service Code, Asset Tag, Manufacture Date, and the Ownership
Date.
l Memory information: Displays Installed Memory, Memory Speed, Number of Active Channels, Memory Technology, DIMM_1 Size,
DIMM_2 Size.
l Processor information: Displays the Processor Type, Processor Speed, Processor Bus Speed, Processor L2 cache, Processor ID,
Microcode Version, Multi Core Capable and HT Capable 64-bit Technology.
l PCI information: Displays available slots on the system board.
Date/Time
Displays the system date and time. Changes to the system date and time take effect immediately.
Boot
Sequence
Specifies the order in which the computer attempts to find an operating system from the devices specified in this list.
l Onboard or USB Floppy
l Onboard SATA Hard Drive
l Onboard or USB CD-Rom Drive
Drives
Diskette drive
This field determines how the BIOS configures floppy drives, operating systems with USB support will recognize USB Floppy drives regardless
of this setting:
l Disable - All Floppy drive are disable
l Enable - All floppy drive are enable.
The "USB Controller" Setup option will affect floppy operation.
SATA Operation
configures the operating mode of the integrated hard drive controller.
l RAID Autodetect / AHCI = RAID if signed drives, otherwise AHCI
l RAID Autodetect / ATA= RAID if signed drives, otherwise ATA
l RAID On / ATA= SATA is configured for RAID on every boot
l Legacy = The hard drive controller is configured for legacy mode
Legacy mode provides for compatibility with some older operating systems that do not support native resources assigned to the drive
controller.
RAID Mode is incompatible with ImageServer. Please disable RAID mode if enabling Image Server.
S.M.A.R.T.
Reporting
This field controls whether hard drive errors for integrated drives are reported during system startup. This technology is part of the SMART
(Self Monitoring Analysis and Reporting Technology) specification.
This option is disabled by default.
Drives
Enables or disables the SATA or ATA drives connected to the system board.
System Configuration
Integrated NIC
Enables or disables the integrated network card. You can set the integrated NIC to:
l Disable
l Enable (default)
l Enable with PXE
l Enable with ImageSever
ImageServe is incompatible with RAID mode. Please disable RAID if enabling ImageServer.
PXE is needed only if intending to boost to an operating system located on a server, not if you are booting on an OS located on a hard
drive in this system.
USB Controller
Enables or disables the integrated USB controller. You can set the USB controller to:
l Enable (default)
l Disable
l No boot
Operating systems with USB support will recognize USB Storage
Parallel Port
Identifies and defines the parallel port settings. You can set the parallel port to:
l Disable
l AT
l PS/2 (default)
l EPP
l ECP No DMA
l ECP DMA 1
l ECP DMA 3
Parallel Port Address
Sets the base I/O address of the integrated parallel port.
Serial Port #1
Identifies and defines the serial port settings. You can set the serial port to:
l Disable
l Auto (default)
l COM1
l COM3
The Operating System may allocate resources even though the setting is disabled.
Miscellaneous
Devices
Enables or disables the following onboard devices:
l Front USB
l PCI slots
l Audio
l OptiPlex ON Reader
l Rear Quad USB
l WiFi NIC Slot
Video
Primary
Video
This field determines which video controller will become the primary video controller when 2 controllers are available in the system. This selection
matters only if there are 2 video controller present.
l Auto(default) - Use the add-in video controller.
l Onboard/Card - Use the integrated video controller unless a Graphic care is installed. A PCI Express Graphic(PEG) card will overide and
disable the integrated video controller.
Performance
Multi Core Support
This field specifies whether the processor will have one or all cores enable. The performance of some application will improve with the
additional cores.
Hyper-Threading
Technology
This option enables or disables the Hyper-Threading Technology. When disabled, only one thread per enabled core is enabled
Thisoptionisenabledbydefault.
Intel®Turbo
Boost Technology
This option enables or disables the Intel®Turbo Boost Technology. When disabled, Intel®Turbo Boost Technology allows processor(s) to
run at frequencies higher than the advertised frequency
This option is enabled by default.
Intel®
SpeedStep™
This Option enables or disables the Intel®SpeedStep™modeoftheprocessor.Whendisabled,thesystemisplacedintothehighest
performance state and the Intel®SpeedStep™appletornativeoperatingsystemdriverarepreventedfromadjustingtheprocessor's
performance. When enable. the Intel®SpeedStep™,enabledCPUisallowedtooperateinmultipleperformancestates.
This option is disabled by default.
C States Control
This option enables or disables additional processor sleep states. The operating system may optionally use these for additional power
saving when idle.
This option is disabled by default.
Limit CPUID Value
This field limits the maximum value the processor Standard CPUID Function will support. Some operating systems will not complete
installation when the maximum CPUID Function supported is greater than 3.
This option is disabled by default.
Virtualization Support
Virtualization
This Option specifies whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities provided by Intel®Virtualization
Technology.
Enable Intel®Virtualization Technology - This option is disabled by default.
VT for Direct
I/O
Enables or disables the Virtual Machine Monitor (VMM) from utilizing the additional hardware capabilities provided by Intel®Virtualization
technology for direct I/O.
Enable Intel®Virtualization Technology for Direct I/O - This option is disabled by default.
Trusted
Execution
Field specifies whether a Measured Virtual Machine(MVMM) can utilize the additional hardware capabilities provided by Intel®Trusted
Execution Technology. The TPM Virtualization Technology and Virtualization Technology for Direct I/O must be enable to use this feature.
Enable Intel®Trusted Execution Technology - This option is disabled by default.
Security
Administrative
Password
Provides restricted access to the computer's system setup program in the same way that access to the system can be restricted with the
System Password option.
This option is not set by default.
System Password
Displays the current status of the system's password security feature and allows a new system password to be assigned and verified.
This option is not set by default.
Password
Changes
Enables or disables the user from changing the system password without the administrative password.
This option is enabled by default.
Admin Setup
Lockout
Enables or disables the user from entering Setup when an Admin password is set.
This option is disabled by default.
Password
Configuration
These fields control the minimum and maximum number of characters allowed for Admin and System passwords. Changes to these fields
are not active until they are committed via the apply button or saving changes before exiting setup.
l Admin Password Min
l Admin Password Max
l System Password Min
l System Password Max
Strong Password
This field enforces strong passwords. If enabled, all passwords must contain at least one uppercase character, one lowercase character,
and be at least 8 characters long. Enabling this feature automatically changes the default minimum password length to 8 characters.
Enforce strong password - This option is disabled by default.
TPM Security
Enables or disables the trusted platform module (TPM) security.
You can set the TPM security to:
l Deactivate (default)
l Activate
l Clear
When TPM Security is set to Clear, the system setup program clears the owner information stored in the TPM. Use this setting to restore
the TPM to its default state if you lose or forget the owner authentication data.
CPU XD Support
Enables or disables the execute disable mode of the processor.
This option is enabled by default.
Computrace(R)
Enables or disables the optional Computrace®service designed for asset management.
You can set this option to:
l Deactivate (default)
l Disable
l Activate
Chassis Intrusion
This field controls the chassis intrusion feature.
You can set this option to:
l Clear Intrusion Warning (Enabled by default if detected the chassis intrusion)
l Disable
l Enabled
l On-Silent (Enabled by default if detected the chassis intrusion)
SATA-0 Password
Displays the current status of the password set for the hard drive connected to the SATA-0 connector on the system board.
You can also set a new password. This option is not set by default.
The system setup program displays a password for each of the hard drives connected to your system board.
SATA-1 Password
Displays the current status of the password set for the hard drive connected to the SATA-1 connector on the system board.
You can also set a new password. This option is not set by default.
The system setup program displays a password for each of the hard drives connected to your system board.
Power Management
AC Recovery
Determines how the system responds when AC power is re-applied after a power loss. You can set the AC Recovery to:
l Power Off (default)
l Power On
l Last State
Auto On Time
Sets time to automatically turn on the computer.
Time is kept in the standard 12-hour format (hours: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 On is
set to disabled.
Low Power Mode
Enables or disables low power mode.
This option is disabled by default.
When low power mode is enabled, the integrated network card is disabled when the system is shutdown or in Hibernate mode. Only Add-in
NIC cards will be able to remotely wake the system.
Remote Wakeup
Allows the system to power up when a network interface controller receives a wake up signal. You can set Remote Wakeup to:
l Disable (default)
l Enable
l Enable with Boot NIC
Suspend Mode
Sets the power management suspend mode to:
l S1
l S3 (default)
Fan Control
Override
Controls the speed of the system fan. This option is disabled by default.
NOTE: When enabled, the fan runs at full speed.
Maintenance
Service Tag
Displays the Service Tag of your computer.
Asset Tag
Allows you to create a system asset tag if an asset tag is not already set.
This option is not set by default.
SERR Messages
Controls the SERR Message mechanism.
This option is enabled by default.
Some graphics cards require the SERR Message mechanism be disabled.
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Image Server
Lookup Method
Specifies how the ImageServer looks up the server address.
l Static IP
l DNS
NOTE: You must set the Integrated NIC to Enable with ImageServer to set the Lookup Method.
ImageServer IP
Specifies the primary static IP address of the ImageServer with which the client software communicates.
The default IP address is 255.255.255.255
NOTE: You must set the “Integrated NIC” control in the “System Configuration” group to “Enabled with ImageServer” and when “Lookup
Method” is set to “Static IP”.
ImageServer Port
Specifies the primary IP port of the image server with which the client software communicates.
The default IP port is 06910
NOTE: You must set the “Integrated NIC” control in the “System Configuration” group to “Enabled with ImageServer”.
Client DHCP
Specifies how the client obtains the IP address.
l Static IP
l DHCP (default)
NOTE: You must set the “Integrated NIC” control in the “System Configuration” group to “Enabled with ImageServer”.
Client IP
Specifies the static IP address of the client.
The default IP address is 255.255.255.255
NOTE: To set Client IP you must set Client DHCP to Static IP
Client
SubnetMask
Specifies the subnet mask for the client.
The default setting is 255.255.255.255
NOTE: To set Client SubnetMask you must set Client DHCP to Static IP
Client Gateway
Specifies the gateway IP address for the client.
The default setting is 255.255.255.255
NOTE: To set Client SubnetMask you must set Client DHCP to Static IP
License Status
Displays the current license status.
Post Behavior
Fast Boot
When enabled (default), your computer starts more quickly because it skips certain configurations and tests.
NumLock LED
Enables or disables the NumLock feature when your computer starts.
When enabled (default), this option activates the numeric and mathematical features shown at the top of each key. When disabled, this option
activates the cursor-control functions labeled on the bottom of each key
POST
Hotkeys
Allows you to specify the function keys to display on the screen when the computer starts.
l Enable F2 = Setup (enabled by default)
l Enable F12 = Boot menu (enabled by default)
Keyboard
Errors
Enables or disables keyboard error reporting when the computer starts.
This option is enabled by default.
MEBx Hotkey
sign-on displays a message stating the keystroke sequence required to enter the Manageability Engine BIOS Extensions(MEBx) Setup program.
This option is enabled by default.
System Logs
BIOS Events
Displays the system event log and allows you to:
l Clear Log
l Mark all Entries
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Coin-Cell Battery
Dell™OptiPlex™980ServiceManual—Desktop
Removing the Coin-Cell Battery
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the expansion card riser.
3. Pull the retention clip away from the coin-cell battery.
4. Lift the coin-cell battery up and away from the computer.
Replacing the Coin-Cell Battery
To replace the coin-cell battery, perform the above steps in reverse order.
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WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
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Control Panel
Dell™OptiPlex™980ServiceManual—Desktop
Removing the I/O Panel
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the front panel.
3. Remove the optical drive.
4. Disconnect the control panel cable.
5. Release the cable.
6. Remove the screw.
7. Remove the control panel from the chassis.
Replacing the Control Panel
To replace the control panel, perform the above steps in reverse order.
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WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
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Cover
Dell™OptiPlex™980ServiceManual—Desktop
Removing the Cover
1. Follow the procedures in Before Working Inside Your Computer.
2. Pull back the cover-release latch.
3. Tilt the computer cover outwards from the top, and then remove it from the computer.
Replacing the Cover
To replace the cover, perform the above steps in reverse order.
Back to Contents Page
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
NOTE: You may need to install Adobe Flash Player from Adobe.com to view the following illustrations.
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Diagnostics
Dell™OptiPlex™980ServiceManual—Desktop
Dell Diagnostics
Power Button Light Codes
Beep Codes
Diagnostic Lights
Dell Diagnostics
When to Use the Dell Diagnostics
It is recommended that you print these procedures before you begin.
Enter system setup (see Entering System Setup), review your computer's configuration information, and ensure that the device you want to test displays in
System Setup and is active.
Start the Dell Diagnostics from either your hard drive or from the Drivers and Utilities media.
Starting the Dell Diagnostics From Your Hard Drive
1. Turn on (or restart) your computer.
2. When the DELL logo appears, press <F12> immediately.
If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft®Windows®desktop. Then shut down
your computer and try again.
3. When the boot device list appears, highlight Boot to Utility Partition and press <Enter>.
4. When the Dell Diagnostics Main Menu appears, select the test that you want to run.
Starting the Dell Diagnostics From the Drivers and Utilities Disc
1. Insert the Drivers and Utilities disc.
2. Shut down and restart the computer.
When the DELL logo appears, press <F12> immediately.
If you wait too long and the Windows logo appears, continue to wait until you see the Windows desktop. Then shut down your computer and try again.
3. When the boot device list appears, highlight Onboard or USB CD-ROM Drive and press <Enter>.
4. Select the Boot from CD-ROM option from the menu that appears and press <Enter>.
5. Type 1 to start the menu and press <Enter> to proceed.
6. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer.
7. When the Dell Diagnostics Main Menu appears, select the test you want to run.
Dell Diagnostics Main Menu
1. After the Dell Diagnostics loads and the Main Menu screen appears, click the button for the option you want.
NOTE: The Dell Diagnostics software works only on Dell computers.
NOTE: The Drivers and Utilities media is optional and may not ship with your computer.
NOTE: If you see a message stating that no diagnostics utility partition has been found, run the Dell Diagnostics from your Drivers and Utilities media.
NOTE: The next steps change the boot sequence for one time only. On the next startup, the computer boots according to the devices specified in the
system setup program.
Option
Function
Express Test
Performs a quick test of devices. This test typically takes 10 to 20 minutes and requires no interaction on your part. Run Express Test first to
increase the possibility of tracing the problem quickly.
Extended
Test
Performs a thorough check of devices. This test typically takes 1 hour or more and requires you to answer questions periodically.
Custom Test
Tests a specific device. You can customize the tests you want to run.
Symptom
Tree
Lists the most common symptoms encountered and allows you to select a test based on the symptom of the problem you are having.
2. If a problem is encountered during a test, a message appears with an error code and a description of the problem. Write down the error code and
problem description and follow the instructions on the screen.
3. If you run a test from the Custom Test or Symptom Tree option, click the applicable tab described in the following table for more information.
4. When the tests are completed, if you are running the Dell Diagnostics from the Drivers and Utilities disc, remove the disc.
5. Close the test screen to return to the Main Menu screen. To exit the Dell Diagnostics and restart the computer, close the Main Menu screen.
Power Button Light Codes
The diagnostic lights give much more information about the system state, but legacy power light states are also supported in your computer. The power light
states are shown in following table.
Beep Codes
If the monitor cannot display error messages during the POST, the computer may emit a series of beeps that identifies the problem or that can help you
identify a faulty component or assembly. The following table lists the beep codes that may be generated during the POST. Most beep codes indicate a fatal
error that prevents the computer from completing the boot routine until the indicated condition is corrected.
Tab
Function
Results
Displays the results of the test and any error conditions encountered.
Errors
Displays error conditions encountered, error codes, and the problem description.
Help
Describes the test and may indicate requirements for running the test.
Configuration
Displays your hardware configuration for the selected device.
The Dell Diagnostics obtains configuration information for all devices from system setup, memory, and various internal tests, and it displays
the information in the device list in the left pane of the screen. The device list may not display the names of all the components installed on
your computer or all devices attached to your computer.
Parameters
Allows you to customize the test by changing the test settings.
Power Light
State
Description
Off
Power is off, light is blank.
Blinking Amber
Initial state of light at power up.
Indicates system has power, but the POWER_GOOD signal is not yet active.
If the Hard Drive light is off, it is probable that the power supply needs to be replaced.
If the Hard Drive light on, it is probable that an onboard regulator or VRM has failed. Look at the diagnostic lights for further information.
Solid Amber
Second state of the light at power up. Indicates the POWER_GOOD signal is active and it is probable that the power supply is fine. Look at
the diagnostic lights for further information.
Blinking Green
System is in a low power state, either S1 or S3. Look at the diagnostic lights to determine which state the system is in.
Solid Green
System is in S0 state, the normal power state of a functioning machine.
The BIOS will turn the light to this state to indicate it has started fetching op-codes.
Code Cause
1-1-2
Microprocessor register failure
1-1-3
NVRAM
1-1-4
ROM BIOS checksum failure
1-2-1
Programmable interval timer
1-2-2
DMA initialization failure
1-2-3
DMA page register read/write failure
1-3-1 through 2-4-4
DIMMs not being properly identified or used
3-1-1
Slave DMA register failure
3-1-2
Master DMA register failure
3-1-3
Master interrupt mask register failure
3-1-4
Slave interrupt mask register failure
3-2-2
Interrupt vector loading failure
3-2-4
Keyboard Controller Test failure
3-3-1
NVRAM power loss
3-3-2
NVRAM configuration
Diagnostic Lights
To help troubleshoot a problem, your computer has four lights labeled 1, 2, 3, and 4 on the bank panel. When the computer starts normally, the lights flash
before turning off. If the computer malfunctions, the sequence of the lights help to identify the problem.
3-3-4
Video Memory Test failure
3-4-1
Screen initialization failure
3-4-2
Screen retrace failure
3-4-3
Search for video ROM failure
4-2-1
No time tick
4-2-2
Shutdown failure
4-2-3
Gate A20 failure
4-2-4
Unexpected interrupt in protected mode
4-3-1
Memory failure above address 0FFFFh
4-3-3
Timer-chip counter 2 failure
4-3-4
Time-of-day clock stopped
4-4-1
Serial or parallel port test failure
4-4-2
Failure to decompress code to shadowed memory
4-4-3
Math coprocessor test failure
4-4-4
Cache test failure
1-1-2
Microprocessor register failure
1-1-3
NVRAM read/write failure
1-1-4
ROM BIOS checksum failure
1-2-1
Programmable interval timer failure
1-2-2
DMA initialization failure
1-2-3
DMA page register read/write failure
1-3
Video Memory Test failure
1-3-1 through 2-4-4
Memory not being properly identified or used
3-1-1
Slave DMA register failure
3-1-2
Master DMA register failure
3-1-3
Master interrupt mask register failure
3-1-4
Slave interrupt mask register failure
3-2-2
Interrupt vector loading failure
3-2-4
Keyboard Controller Test failure
3-3-1
NVRAM power loss
3-3-2
Invalid NVRAM configuration
3-3-4
Video Memory Test failure
3-4-1
Screen initialization failure
3-4-2
Screen retrace failure
3-4-3
Search for video ROM failure
4-2-1
No timer tick
4-2-2
Shutdown failure
4-2-3
Gate A20 failure
4-2-4
Unexpected interrupt in protected mode
4-3-1
Memory failure above address 0FFFFh
4-3-3
Timer-chip counter 2 failure
4-3-4
Time-of-day clock stopped
4-4-1
Serial or parallel port test failure
4-4-2
Failure to decompress code to shadowed memory
4-4-3
Math-coprocessor test failure
4-4-4
Cache test failure
NOTE: After the computer completes POST, all four lights turn off before booting to the operating system.
Light Pattern
Problem Description
Suggested Resolution
Diagnostic
LEDs
Power
Button
LED
l Reseat the power cable in the power connector on the back of the computer and the
electrical outlet.
l Bypass power strips, power extension cables, and other power protection devices to verify
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