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Dell OptiPlex 780 manual

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Table of contents for the manual

  • Page 1

    Dell™ OptiPlex™ 780 Service Manual Mini - Tower Computer Working on Your Computer Removing and Replacing Parts Specifications Diagnostics System Setup Notes, Cautions, and Warnings 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 da[...]

  • Page 2

    [...]

  • Page 3

    Working on Your Computer Dell™ OptiPlex™ 780 Service Manual Before Working Inside Your Computer Recommended Tools Turning Off Your Computer After Working Inside Your Computer Before Working Inside Your Computer Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety. Unl[...]

  • Page 4

    The procedures in this document may require the following tools: Small flat - blade screwdriver Phillips screwdriver Small plastic scribe Flash BIOS update program CD (see the Dell Support website at support.dell.com ) Turning Off Your Computer CAUTION: To avoid losing data, save and close all open files and exit all open programs before you turn o[...]

  • Page 5

    Back to Contents Page Removing and Replacing Parts Dell™ OptiPlex™ 780 Service Manual—Mini - Tower Cover Coin - Cell Battery Optical Drive Video Card Hard Drive Power Supply Processor Drive Cover Memory Module Floppy Drive System Fan IO Panel Heat Sink System Board Back to Contents Page[...]

  • Page 6

    Back to Contents Page Technical Specifications Processor Memory Expansion Bus Video System Information Cards Drives External Connectors Controls and Lights Network Audio Power System Board Connectors Physical Environmental NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start ® Help and [...]

  • Page 7

    Network Integrated Intel integrated network interface card capable of 10/100/1000 Mb/s communication System Information Chipset Intel® Q45 Express chipset w/ICH10DO DMA channels eight Interrupt levels 24 BIOS chip (NVRAM) 64 Mb Expansion Bus Bus type PCI 2.3 PCI Express 2.0 SATA 1.0A and 2.0 eSATA USB 2.0 Bus speed PCI: 133 MB/s PCI Express: x1- s[...]

  • Page 8

    Small form factor one low profile card NOTE: The PCI Express x16 slot is disabled when a display is connected to the integrated video connector. Drives Externally accessible 5.25 inch drive bay(s) Mini - tower Desktop Small form factor for SATA DVD - ROM, DVD+/- RW, or CD +/ - RW drives two bays one bay one slimline bay 3.5 inch drive bay Mini - to[...]

  • Page 9

    Desktop Small form factor two 120- pin connectors one 120- pin connector PCI Express x1 Mini - tower Desktop Small form factor data width (maximum) — one PCI Express lane one 36 - pin connector not applicable not applicable PCI Express x16 one 164- pin connector data width (maximum) — 16 PCI Express lanes Serial ATA Mini - tower Desktop Small f[...]

  • Page 10

    Diagnostic lights four lights. For more information, see Diagnostics. Back of the computer Link integrity light on integrated network adapter green — a good 10 Mbps connection exists between the network and the computer. orange — a good 100 Mbps connection exists between the network and the computer. yellow — a good 1000 Mbps connection exist[...]

  • Page 11

    Mini - tower Desktop Small form factor 43.30 cm (17.00 inches) 35.30 cm (13.90 inches) 34.00 cm (13.40 inches) Weight Mini - tower Desktop Small form factor 11.70 kgs (25.80 lbs) 8.26 kgs (18.20 lbs) 6.80 kgs (15.00 lbs) Environmental Temperature Operating 10° to 35°C (50° to 95°F) Storage –40° to 65°C (–40° to 149°F) Relative humidity [...]

  • Page 12

    Back to Contents Page Diagnostics Dell™ OptiPlex™ 780 Service Manual 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. NOTE: The Dell Diagnostics software works only on Dell computers. NOTE: The Drivers and [...]

  • Page 13

    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 app[...]

  • Page 14

    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 dia[...]

  • Page 15

    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 sh[...]

  • Page 16

    No memory modules are detected. If two or more memory modules are installed, remove the modules, then reinstall one module and restart 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. If available, install [...]

  • Page 17

    Back to Contents Page System Setup Dell™ OptiPlex™ 780 Service Manual—Mini - Tower, Desktop, and Small Form Factor Boot Menu Navigation Keystrokes Entering System Setup System Setup Simulation System Setup Menu Options Boot Menu Press <F12> when the Dell™ logo appears to initiate a one - time boot menu with a list of the valid boot de[...]

  • Page 18

    Memory information: Displays Installed Memory , Usable Memory, Memory Speed, Memory Channel Mode, Memory Technology, DIMM_1 Size, DIMM_2 Size, DIMM_3 Size, and DIMM_4 Size. . Processor information: Displays the Processor Type, Processor Speed, Processor Bus Speed, Processor L2 cache, Processor ID, Microcode Version, Multi Core Capable and HT Capabl[...]

  • Page 19

    The Operating System may allocate resources even though the setting is disabled. Serial Port #2 Identifies and defines the serial port settings. You can set the serial port to: Disable Auto (default) COM2 COM4 The Operating System may allocate resources even though the setting is disabled. Miscellaneous Devices Enables or disables the following onb[...]

  • Page 20

    You can set the TPM security to: Deactivate (default) Activate Clear NOTE: When TPM Security is set to Clear the system setup program clears the user information stored in the TPM. 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 Computrac[...]

  • Page 21

    The default IP address is 255.255.255.255 NOTE: You must set the Integrated NIC to Enable with ImageServer to set the ImageServer IP. ImageServer Port Specifies the primary IP port of the image server with which the client software communicates. The default IP port is 06910. Client DHCP Specifies how the client obtains the IP address. Static IP DHC[...]

  • Page 22

    Back to Contents Page Cover Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Cover 1 . Follow the[...]

  • Page 23

    4 . Remove the system cover.[...]

  • Page 24

    Replacing the Cover To replace the cover, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 25

    Back to Contents Page Coin - Cell Battery Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Coin- [...]

  • Page 26

    4 . Remove the coin - cell battery from the system board.[...]

  • Page 27

    Replacing the Coin- Cell Battery To replace the coin - cell battery, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 28

    Back to Contents Page Optical Drive Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Optical Driv[...]

  • Page 29

    4 . Disconnect the SATA cable from the optical drive. 5 . Slide the drive release latch toward the base of the system and hold.[...]

  • Page 30

    6 . Slide the optical drive out of the system.[...]

  • Page 31

    Replacing the Optical Drive To replace the optical drive, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 32

    Back to Contents Page Video Card Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Video Card 1 . [...]

  • Page 33

    4 . Lift the expansion card up and out of the expansion slot.[...]

  • Page 34

    Replacing the Video Card To replace the video card, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 35

    Back to Contents Page Hard Drive Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Hard Drive 1 . [...]

  • Page 36

    5 . Press in on the blue release tabs on each side of the hard drive.[...]

  • Page 37

    6 . Slide the hard drive out of the computer.[...]

  • Page 38

    Replacing the Hard Drive To replace the hard drive, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 39

    Back to Contents Page Power Supply Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Power Supply [...]

  • Page 40

    4 . Disconnect the optical - drive power cable.[...]

  • Page 41

    5 . Disconnect the processor power cable from the system board. 6 . Disconnect the main power cable from the system board.[...]

  • Page 42

    7 . Remove the IO - panel data cable from the cable routing at base of power supply.[...]

  • Page 43

    8 . Remove any data cables from the cable routing at the base of the power supply.[...]

  • Page 44

    9 . Press the release latch that secures the power supply to the chassis.[...]

  • Page 45

    10 . Slide the power supply towards the front of the computer and lift the power supply up and away from the computer.[...]

  • Page 46

    Replacing the Power Supply To replace the power supply, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 47

    Back to Contents Page Processor Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Processor 1 . Fo[...]

  • Page 48

    4 . Remove the processor from the system board.[...]

  • Page 49

    CAUTION: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. Replacing the Processor To replace the processor, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 50

    Back to Contents Page Drive Cover Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Drive Cover 1 [...]

  • Page 51

    Replacing the Drive Cover To replace the drive cover, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 52

    Back to Contents Page Memory Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Memory Module(s) 1 [...]

  • Page 53

    Replacing the Memory Module(s) To replace the memory module(s), perform the above steps in reverse order. Back to Contents Page[...]

  • Page 54

    Back to Contents Page Floppy Drive Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the Floppy Drive [...]

  • Page 55

    6 . Slide the drive release latch toward the base of the system and hold.[...]

  • Page 56

    7 . Slide the floppy drive out of the system.[...]

  • Page 57

    Replacing the Floppy Drive To replace the floppy drive, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 58

    Back to Contents Page System Fan Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the System Fan 1 . [...]

  • Page 59

    4 . Disconnect the processor - fan power cable.[...]

  • Page 60

    5 . Pull up on the processor retention tab that is closest to the top of the computer.[...]

  • Page 61

    6 . Press the processor fan retention tab that is closest to the base of the computer.[...]

  • Page 62

    7 . Slide the processor fan towards the back of the computer.[...]

  • Page 63

    8 . Remove the processor fan from the computer.[...]

  • Page 64

    Replacing the System Fan To replace the system fan, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 65

    Back to Contents Page IO Panel Dell™ OptiPlex™ 780 Service Manual—Mini - Tower 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. Removing the IO Panel NOTE: Yo[...]

  • Page 66

    4 . Remove the one screw securing the IO panel to the front of the system.[...]

  • Page 67

    5 . Press the retention latch to release the IO panel.[...]

  • Page 68

    6 . Tilt the IO panel toward the back of the system.[...]

  • Page 69

    7 . Lift the IO panel out of the slot.[...]

  • Page 70

    8 . Disconnect the IO panel data cable.[...]

  • Page 71

    9 . Remove the IO panel.[...]

  • Page 72

    Replacing the IO Panel To replace the IO panel, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 73

    Back to Contents Page Heat Sink Dell™ OptiPlex™ 780 Service Manual–Mini - Tower 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. Removing the Heat Sink 1 . Fo[...]

  • Page 74

    4 . Loosen the two captive screws that secure the heat sink to the system board.[...]

  • Page 75

    5 . Pivot the heat sink toward the back of the computer.[...]

  • Page 76

    Replacing the Heat Sink To replace the heat sink, perform the above steps in reverse order. Back to Contents Page[...]

  • Page 77

    Back to Contents Page System Board Dell™ OptiPlex™ Service Manual—Mini - Tower 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. Removing the System Board 1 . [...]

  • Page 78

    7 . Disconnect the main system board power cable.[...]

  • Page 79

    8 . Disconnect the optical drive data cable from the system board.[...]

  • Page 80

    9 . Move the optical - drive data cable out of the way.[...]

  • Page 81

    10 . Disconnect the hard - drive data cable from the system board.[...]

  • Page 82

    11 . Move the hard - drive data cable out of the way.[...]

  • Page 83

    12 . Disconnect the IO- panel data cable from the system board.[...]

  • Page 84

    13 . Move the IO- panel cable out of the way.[...]

  • Page 85

    14 . Remove the two screws that secure the heat sink assembly bracket to the system board.[...]

  • Page 86

    15 . Remove the heat sink assembly bracket from the system.[...]

  • Page 87

    16 . Remove the seven screws that secure the system board to the chassis.[...]

  • Page 88

    17 . Remove the system board from the chassis.[...]

  • Page 89

    Replacing the System Board To replace the system board, perform the above steps in reverse order. Back to Contents Page[...]