Dell OptiPlex 780 Service Manual
Dell OptiPlex 780 Manual
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- Dell OptiPlex 780 | Service Manual - Page 1
Dell™ OptiPlex™ 780 Service Manual Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 2
- Dell OptiPlex 780 | Service Manual - Page 3
on Your Computer Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 4
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 off your computer. 1. Shut down the operating system: In Windows - Dell OptiPlex 780 | Service Manual - Page 5
Back to Contents Page Removing and Replacing Parts Dell™ OptiPlex™ 780 Service Manual-Desktop Cover Primary Hard Drive Floppy Drive (Optional) Expansion Card Memory Power Supply Fan System Board Optical Drive Secondary Hard Drive (Optional) Riser Cage Standard Back Plate - Dell OptiPlex 780 | Service Manual - Page 6
® Help and Support and select the option to view information about your computer. NOTE: Unless otherwise stated, the specifications are identical for mini-tower, desktop, and small form factor computers. Processor Type Level 2 (L2) cache Intel® Core™2 Duo; FSB up to 1333 MHz Intel Core 2 Quad; FSB - Dell OptiPlex 780 | Service Manual - Page 7
Information Chipset DMA channels Interrupt levels BIOS chip (NVRAM) Expansion Bus Bus type Bus speed Cards PCI Mini-tower Desktop Small form factor PCI Express x1 Mini-tower Desktop Small form factor PCI Express x16 Mini-tower Desktop Intel integrated network interface card capable of 10/100/1000 - Dell OptiPlex 780 | Service Manual - Page 8
3.5 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 for 19-in-1 Media Card Readers one bay one bay one slimline bay for hard drives two bays one bay one bay NOTE: Your computer can support up to two 2.5 inch - Dell OptiPlex 780 | Service Manual - Page 9
Desktop Small form factor PCI Express x1 Mini-tower Desktop Small form factor PCI Express x16 Serial ATA Mini-tower Desktop Small form factor Memory Internal USB device Processor fan Hard-drive fan Front panel control Processor Power 12V Power Controls and Lights Front of the computer Power button - Dell OptiPlex 780 | Service Manual - Page 10
the power supply wattage rating. NOTE: See the safety information that shipped with your computer for important voltage setting information. Physical Height Mini-tower Desktop Small form factor Width Mini-tower Desktop Small form factor Depth 40.80 cm (16.10 inches) 11.40 cm (4.50 inches) 9.26 cm - Dell OptiPlex 780 | Service Manual - Page 11
Mini-tower Desktop Small form factor Weight Mini-tower Desktop Small form factor Environmental Temperature Operating Storage Relative humidity (noncondensing) Maximum vibration Operating Storage Maximum shock Operating Storage Altitude Operating Storage Airborne contaminant level Back to Contents - Dell OptiPlex 780 | Service Manual - Page 12
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 - Dell OptiPlex 780 | Service Manual - Page 13
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 - Dell OptiPlex 780 | Service Manual - Page 14
power state of a functioning machine. The BIOS will turn the light to this state to indicate it has started fetching op-codes. 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 - Dell OptiPlex 780 | Service Manual - Page 15
failure Failure to decompress code to shadowed memory Math-coprocessor test failure Cache test failure 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 - Dell OptiPlex 780 | Service Manual - Page 16
memory you are using is supported by your computer (see the "Specifications" section for your computer). If the problem persists, contact Dell. Determine if a conflict exists by removing an expansion card (not a graphics card) and restarting the computer. If the problem persists, reinstall the card - Dell OptiPlex 780 | Service Manual - 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 when the Dell™ logo appears to initiate a one-time - Dell OptiPlex 780 | Service Manual - Page 18
RAID mode if enabling Image Server. 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. Drives This option is disabled by default. Enables - Dell OptiPlex 780 | Service Manual - Page 19
(default) - Use the add-in video controller. Onboard/Card - Use the integrated video controller unless a Graphic care is installed. A PCI Express Graphic(PEG) card will override and disable the integrated video controller. Performance Multi Core Support This field specifies whether the processor - Dell OptiPlex 780 | Service Manual - Page 20
CPU XD Support Computrace(R) You can set the TPM security to: Service Tag of your computer. Allows you to create a system asset tag if an asset tag is not already set. This option is not set by default. Controls the SERR Message mechanism. This option is enabled by default. Some graphics cards - Dell OptiPlex 780 | Service Manual - Page 21
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. Enable F2 = Setup (enabled by default) Enable F12 = Boot menu (enabled - Dell OptiPlex 780 | Service Manual - Page 22
Page Cover Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 23
3. Tilt the cover outward from the top, and then remove the cover from the computer. Replacing the Cover To replace the cover, perform the steps above in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 24
Page Primary Hard Drive Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 25
6. Press in on the blue securing tabs on each side of the drive, and then slide the drive towards the back of the computer. - Dell OptiPlex 780 | Service Manual - Page 26
7. Lift the hard drive and remove it from the system. - Dell OptiPlex 780 | Service Manual - Page 27
Replacing the Primary Hard Drive To replace the hard drive, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 28
Page Floppy Drive Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 29
4. Pull up on the drive-release latch, and then slide the floppy drive towards the back of the computer. - Dell OptiPlex 780 | Service Manual - Page 30
5. Lift the floppy drive up and away from the computer. - Dell OptiPlex 780 | Service Manual - Page 31
Replacing the Floppy Drive To replace the floppy drive, peform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 32
Page Expansion Card(s) Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 33
Replacing the Expansion Card(s) To replace the expansion card, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 34
to Contents Page Memory Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 35
Replacing the Memory Module(s) To replace the memory module(s), perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 36
Page Power Supply Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 37
7. Release the processor power connector cable from routing guides under the system board. - Dell OptiPlex 780 | Service Manual - Page 38
8. Remove the screws that secure the power supply to the back of the chassis. - Dell OptiPlex 780 | Service Manual - Page 39
9. Press the power supply release latch at the bottom of the chassis and then slide the power supply towards the front of the computer. - Dell OptiPlex 780 | Service Manual - Page 40
10. Lift the power supply up and away from the computer. - Dell OptiPlex 780 | Service Manual - Page 41
Replacing the Power Supply To replace the power supply, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 42
Page Fan Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 43
4. Lift the fan and remove it from the computer. - Dell OptiPlex 780 | Service Manual - Page 44
Replacing the Fan To replace the fan, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 45
Page System Board Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 46
6. Disconnect the fan power cable. 7. Disconnect the main power cable from the system board. - Dell OptiPlex 780 | Service Manual - Page 47
8. Disconnect the IO-panel cable. - Dell OptiPlex 780 | Service Manual - Page 48
9. Disconnect the optical-drive data cable from the system board. - Dell OptiPlex 780 | Service Manual - Page 49
10. Disconnect the hard-drive data cable from the system board. - Dell OptiPlex 780 | Service Manual - Page 50
11. Disconnect the processor power cable. - Dell OptiPlex 780 | Service Manual - Page 51
12. Remove the screws that secure the system board to the computer chassis. - Dell OptiPlex 780 | Service Manual - Page 52
13. Remove the heat sink assembly bracket. - Dell OptiPlex 780 | Service Manual - Page 53
14. To remove the system board, slide the system board towards the back of the computer and lift the system board up and away from the computer. - Dell OptiPlex 780 | Service Manual - Page 54
Replacing the System Board To replace the system board, perform the above the steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 55
Page Optical Drive Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 56
4. Lift the drive-release latch, and then slide the drive towards the back of the computer. - Dell OptiPlex 780 | Service Manual - Page 57
5. Lift and remove the drive from the computer. - Dell OptiPlex 780 | Service Manual - Page 58
Replacing the Optical Drive To replace the optical drive, perform the steps above in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 59
Back to Contents Page Secondary Hard Drive (Optional) Dell™ OptiPlex™ 780 Service Manual-Desktop 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 OptiPlex 780 | Service Manual - Page 60
4. Disconnect the hard-drive power cable. 5. Pull up on the release latch, and then slide the hard drive towards the back of the computer. - Dell OptiPlex 780 | Service Manual - Page 61
6. Lift the hard drive and remove it from the computer. - Dell OptiPlex 780 | Service Manual - Page 62
Replacing the Secondary Hard Drive To replace the secondary hard drive, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 63
Page Riser Cage Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 64
4. Gently pull the riser-cage handle and lift the riser cage up and away from the computer. - Dell OptiPlex 780 | Service Manual - Page 65
5. On the riser cage, rotate the card retention latch upward. - Dell OptiPlex 780 | Service Manual - Page 66
6. Gently pull the card release latch on the riser board away from the card and ease the card out of its connector. - Dell OptiPlex 780 | Service Manual - Page 67
Replacing the Riser Cage To replace the riser cage, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 68
Standard Back Plate Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 69
- Dell OptiPlex 780 | Service Manual - Page 70
Heat Sink and Processor Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 71
3. Rotate the heat sink upwards. 4. Lift the heat sink and remove it from the computer. - Dell OptiPlex 780 | Service Manual - Page 72
5. Open the processor cover by sliding the release lever from under the cover latch on the socket. Then, pull the lever back to release the processor cover. - Dell OptiPlex 780 | Service Manual - Page 73
6. Lift the processor cover. - Dell OptiPlex 780 | Service Manual - Page 74
7. Remove the processor from the computer. - Dell OptiPlex 780 | Service Manual - Page 75
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 Heat Sink and Processor To replace the heat sink and processor, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 76
-Cell Battery Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 77
Replacing the Coin-Cell Battery To replace the coin-cell battery, perform the above steps in reverse order. Back to Contents Page - Dell OptiPlex 780 | Service Manual - Page 78
Page IO Panel Dell™ OptiPlex™ 780 Service Manual-Desktop 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 - Dell OptiPlex 780 | Service Manual - Page 79
4. Gently rotate the IO panel away from the computer and then remove it from the computer. - Dell OptiPlex 780 | Service Manual - Page 80
Replacing the IO Panel To replace the IO panel, perform the above steps in reverse order. Back to Contents Page
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Dell™ OptiPlex™ 780 Service Manual
Desktop 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 data if instructions are not
followed.
WARNING:
A WARNING indicates a potential for property damage, personal injury, or death.
If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are
not applicable.
Information in this document is subject to change without notice.
© 2009 Dell Inc. All rights reserved.
Reproduction of this material in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text:
Dell
, the
DELL
logo,
OptiPlex
are trademarks of Dell Inc.;
Intel
,
Core,
and
Celeron
are registered trademarks of Intel
Corporation in the U.S. and other countries;
Microsoft
,
Windows, Windows Server, MS-DOS and Windows Vista
are either trademarks or registered
trademarks of Microsoft Corporation in the United States and/or other countries.
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.
October 2012
Rev. A02