Dell OptiPlex 780-USFF Manual de Serviço

Dell™ OptiPlex™ 780 Ultra Small Form Factor—ServiceManualWorking on Your ComputerRemoving and Replacing PartsSpecificationsSystem Board LayoutSystem S

Use the Tab and Up/Down arrowkeys on your keyboard to navigateor click to navigate using themouse.System Setup OptionsNOTE: Depending on your computer

DisableATPS/2 (default)EPPECP No DMAECP DMA 1ECP DMA 3Parallel PortAddressSets the base I/O address of the integrated parallel port.Serial Port #1 Ide

password to be assigned and verified.This option is not set by default.PasswordChangesEnables or disables the user from changing the system password w

Sets the power management suspend mode to:S1S3 (default)NOTE: If the AMT Management Engine (ME) of the system is disabled, the S1 suspend mode isunava

Post BehaviorFastBootWhen enabled (default), your computer starts more quickly because it skips certain configurations and tests.NumLockLEDEnables or

Changing the Boot Sequence for Future Boots1. Enter System Setup (see Entering System Setup). 2. Click to expand SystemBoard and then click Boot Seq

You can only assign a system password when the following option is displayed:Not Set — No system password is assigned and the password jumper on the s

computer, and then repeat steps 3 and 4.5. To assign a new password, follow the procedure in Assigning a System Password. 6. Exit system setup. Admi

To change an existing administrator password, you must know the administrator password.1. Enter system setup (see Entering System Setup). 2. Type th

1. Follow the procedures in Working on Your Computer. 2. Remove the computer cover. 3. Locate the 2-pin password jumper (PSWD) on the system board,

Back to Contents PageWorking on Your ComputerDell™ OptiPlex™ 780 Ultra Small Form Factor—Service Manual Before Working Inside Your Computer Recommen

Back to Contents PageDiagnosticsDell™ OptiPlex™ 780 Ultra Small Form Factor—Service Manual Dell Diagnostics Power Button Light Codes Beep Codes Di

6. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the versionappropriate for your computer. 7

AmberSecond state of the light at power up. Indicates the POWER_GOOD signal is active and it is probable thatthe power supply is fine. Look at the dia

4-4-2 Failure to decompress code to shadowed memory4-4-3 Math-coprocessor test failure4-4-4 Cache test failureDiagnostic LightsTo help troubleshoot a

Repeat this process for each expansion card installed. If the computerstarts normally, troubleshoot the last card removed from thecomputer for resourc

Back to Contents PageCoverDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety info

Replacing the CoverTo replace the cover, perform the above steps in reverse order. Back to Contents Page

Back to Contents PageCoverDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety info

Replacing the CoverTo replace the cover, perform the above steps in reverse order. Back to Contents Page

Small flat-blade screwdriverPhillips screwdriverSmall plastic scribeFlash BIOS update program mediaTurning Off Your ComputerCAUTION: To avoid losing d

Back to Contents PageDrive CageDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety

5. Disconnect the power and data cables from the optical drive.6. Flip over the drive cage and place it on the computer.

7. Disconnect the power and data cables from the hard drive.8. Remove the drive cage from the computer.

Replacing the Drive CageTo replace the drive cage, perform the above steps in reverse order. Back to Contents Page

Back to Contents PageOptical DriveDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the saf

6. Remove the optical-drive bracket from the optical-drive assembly.Replacing the Optical DriveTo replace the optical drive, perform the above steps

Back to Contents PageWireless Local Area Network (WLAN) CardDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside y

6. Push the levers that secure the WLAN card to the computer away from the WLAN card.7. Remove the WLAN card from the connector on the system board.

Replacing the WLAN CardTo replace the WLAN card, perform the above steps in reverse order. Back to Contents Page

Back to Contents PageSystem FanDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety

Back to Contents PageRemoving and Replacing PartsDell™ OptiPlex™ 780 Ultra Small Form Factor—Service Manual Cover Drive Cage Optical Drive Wireles

6. Release the fan cable from its routing on the computer.7. Remove the screws that secure the fan to the computer chassis.

8. Remove the system fan from the computer.Replacing the System FanTo replace the system fan, perform the above steps in reverse order. Back to Conte

Back to Contents PageHeat Sink and ProcessorDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, re

6. Loosen the captive screws on the heat sink.7. Lift the heat sink out of the computer.

8. Press the release lever down and out to release the processor cover.9. Open the processor cover.

10. Remove the processor from the system board.Replacing the Heat Sink and ProcessorTo replace the heat sink and processor, perform the above steps i

Back to Contents PageIntrusion SwitchDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the

6. Slide the chassis intrusion switch out of its slot in the metal bracket, and then push it down through the squarehole in the bracket to remove the

Back to Contents PageCoin-Cell BatteryDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the

9. Lift the coin-cell battery up and remove it from the system board.Replacing the Coin-Cell BatteryTo replace the coin-cell battery, perform the abo

Back to Contents PageSpecificationsDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualNOTE: Offerings may vary by region. For more information

Back to Contents PageSystem BoardDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safe

12. Disconnect the internal antenna cable.13. Remove the screws that secure the system board to the computer chassis.

14. Remove the 7 mm hex screw from the system board.15. Remove the system board from the computer.

Replacing the System BoardTo replace the system board, perform the above steps in reverse order. Back to Contents Page

Back to Contents PageFront BezelDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safet

4. Rotate the front bezel away from the computer.5. Remove the front bezel from the computer.Replacing the Front BezelTo replace the front bezel, pe

Back to Contents PageHard DriveDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety

6. Slide the hard drive out of the drive cage and remove the hard drive from the computer.Replacing the Hard DriveTo replace the hard drive, perform

Back to Contents PageControl PanelDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the saf

6. Remove the cable from the routing guides on the computer chassis.7. Remove the screw that secures the control panel to the computer.

Drives Externally accessibleslimline drive bays one bay for SATA DVD-ROM / DVD+/–RWInternally accessible2.5-inch drive bays oneExternal Connectors Aud

8. Remove the control panel from the computer.Replacing the Control PanelTo replace the control panel, perform the above steps in reverse order. Back

Back to Contents PageInternal Antenna CableDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, rea

6. Remove the internal antenna cable from the routing guides on the computer chassis.7. Carefully release the internal antenna port from the compute

8. Remove the internal antenna cable from the computer.Replacing the Internal Antenna CableTo replace the internal antenna cable, perform the above s

Back to Contents PageInternal SpeakerDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the

7. Push in on the release tab and rotate the speaker to release it from the computer chassis.8. Remove the speaker from the computer.Replacing the I

Back to Contents PageMemoryDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety inf

6. Lift the memory module out of the connector and remove it from the computer. Replacing the Memory Module(s)To replace the memory, perform the abov

Back to Contents PageI/O PanelDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safety

6. Remove the screws that secure the I/O panel to the computer chassis.7. Remove the I/O board by pulling it away from the computer.

Height 23.7 cm (9.3 inches)Width 6.5 cm (2.6 inches)Depth 24.0 cm (9.4 inches)Weight 3.2 kg (7 lb)Environmental TemperatureOperating 10 °C to 35 °C (5

Replacing the I/O PanelTo replace the I/O panel, perform the above steps in reverse order. Back to Contents Page

Back to Contents PagePower SupplyDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read the safe

8. Remove the screw that secures the power supply to the system board.9. Remove the screws that secure the power supply to the computer chassis.

10. Slide the power supply towards the fan and remove it from the computer.Replacing the Power SupplyTo replace the power supply, perform the above s

Back to Contents PageSystem Board LayoutDell™ OptiPlex™ 780 Ultra Small Form Factor—Service ManualWARNING: Before working inside your computer, read t

Back to Contents Page System SetupDell™ OptiPlex™ 760 Ultra Small Form Factor—Service Manual Overview System Setup Options Booting to a USB Device