Dell OptiPlex 790 Service Manual Download Page 96

Page: 96 / 103

Drives

Externally Accessible (5.25–inch drive bays)

Mini-Tower

two

Desktop

one

Small Form Factor

one slim optical drive bay

Ultra Small Form Factor

one slim optical drive bay

Internally Accessible:

3.5–inch SATA drive bays

Mini-Tower

two

Desktop

one

Small Form Factor

one

Ultra Small Form Factor

none

2.5–inch SATA drive bays

Mini-Tower

two

Desktop

one

Small Form Factor

one

Ultra Small Form Factor

one

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

Serial

one 9-pin connector; 16550C compatible

Parallel

one 25-pin connector (optional for mini-
tower)

USB 2.0

Summary of Contents for OptiPlex 790

Page 1: ...Dell OptiPlex 990 Desktop Service Manual Regulatory Model D05D Regulatory Type D05D001 ...

Page 2: ...ks of Intel Corporation in the U S and other countries AMD is a registered trademark and AMD Opteron AMD Phenom AMD Sempron AMD Athlon ATI Radeon and ATI FirePro are trademarks of Advanced Micro Devices Inc Microsoft Windows MS DOS Windows Vista the Windows Vista start button and Office Outlook are either trademarks or registered trademarks of Microsoft Corporation in the United States and or othe...

Page 3: ... 2 Cover 13 Removing the Cover 13 Installing The Cover 13 3 Front Bezel 15 Removing the Front Bezel 15 Installing The Front Bezel 16 4 Cards 17 Removing the Expansion Card 17 Installing The Expansion Card 19 5 Optical Drive 21 Removing the Optical Drive 21 Installing The Optical Drive 22 6 Hard Drive 23 Removing the Hard Drive 23 Installing The Hard Drive 25 7 Memory 27 Removing the Memory 27 ...

Page 4: ...k and Processor 35 11 Coin Cell Battery 37 Removing The Coin Cell Battery 37 Installing The Coin Cell Battery 38 12 Power Switch Cable 39 Removing The Power Switch Cable 39 Installing The Power Switch Cable 40 13 Front Thermal Sensor 41 Removing The Front Thermal Sensor 41 Installing The Front Thermal Sensor 42 14 Chassis Fan 43 Removing The System Fan 43 Installing The System Fan 44 15 Input Outp...

Page 5: ...g Key Sequences 60 Beep Codes and Text Error Messages 61 Navigation 61 System Setup Options 61 20 Troubleshooting 73 Diagnostic LEDs 73 Diagnostic Light Patterns 73 Beep Codes 80 Error Messages 83 Address mark not found 83 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 8...

Page 6: ...ure at address read value expecting value 86 Memory allocation error 87 Memory data line failure at address read value expecting value 87 Memory double word logic failure at address read value expecting value 87 Memory odd even logic failure at address read value expecting value 87 Memory write read failure at address read value expecting value 87 Memory size in CMOS invalid 87 Memory tests termin...

Page 7: ... 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 90 Write fault 90 Write fault on selected drive 91 X is not accessible The device is not ready 91 21 Specifications 93 Technical Specifications 93 22 Contacting Dell 103 ...

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Page 9: ...cumentation or as directed by the online or telephone service and support team 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 CAUTION To avoid electrostatic discharge ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface such as a connector on...

Page 10: ...s 5 Press and hold the power button while the computer is unplugged to ground the system board 6 Remove the cover CAUTION Before touching anything inside your computer ground yourself by touching an unpainted metal surface such as the metal at the back of the computer While you work periodically touch an unpainted metal surface to dissipate static electricity which could harm internal components R...

Page 11: ...g system press and hold the power button for about 6 seconds to turn them off After Working Inside Your Computer After you complete any replacement procedure ensure you connect any external devices cards and cables before turning on your computer 1 Replace the cover CAUTION To connect a network cable first plug the cable into the network device and then plug it into the computer 2 Connect any tele...

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Page 13: ...our Computer 2 Pull up the cover release latch at the side of the computer 3 Lift the cover upward to a 45 degree angle and remove it from the computer Installing The Cover 1 Place the computer cover on the chassis 2 Press down on the computer cover until it clicks into place 13 ...

Page 14: ...3 Follow the procedures in After Working Inside Your Computer 14 ...

Page 15: ...the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Pry the front bezel retention clips away from the chassis 4 Rotate the bezel away from the computer to release the hooks on the opposite edge of the bezel from the chassis 15 ...

Page 16: ...om edge of the front bezel into the slots on the chassis front 2 Rotate the bezel towards the computer to engage the four front bezel retention clips until they click into place 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 16 ...

Page 17: ...lease tab on the card retention latch upward 4 Pull the release lever away from the PCIe x16 card to release the securing tab from the dent in the card Then ease the card up and out of its connector and remove it from the computer 5 Lift the PCIe x1 expansion card if any up and out of its connector and remove it from the computer 17 ...

Page 18: ...6 Lift the PCI expansion card if any up and out of its connector and remove it from the computer 7 Lift the PCI x4 expansion card if any up and out of its connector and remove it from the computer 18 ...

Page 19: ... connector on the system board and press down to secure it in place 3 Insert the PCIe x1 card if any into the connector on the system board and press down to secure it in place 4 Insert the PCIe x16 card if any into the connector on the system board and press down to secure it in place 5 Install the cover 6 Follow the procedures in After Working Inside Your Computer 19 ...

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Page 21: ...Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the data cable and power cable from the back of the optical drive 5 Slide up the optical drive latch and then push the optical drive from the back towards the front of the computer 21 ...

Page 22: ...ive latch and push the optical drive from the front towards the back of the computer 2 Connect the data cable and power cable to the optical drive 3 Install the front bezel 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 22 ...

Page 23: ...ter 2 Remove the cover 3 Remove the data cable and power cable from the back of the hard drive 4 Press the hard drive bracket latch towards the hard drive and lift it upward 5 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 23 ...

Page 24: ...s that secure the 2 5 inch hard drive to the underside of the bracket 7 Flex the hard drive bracket and then remove the two 2 5 inch hard drives from the bracket 8 Release the screws that secure the 2 5 inch hard drive to the top of the hard drive bracket 24 ...

Page 25: ...ard drive bracket 2 Flex the hard drive bracket and then insert the single 3 5 inch hard drive or the two 2 5 inch hard drives into the bracket 3 Press the hard drive bracket latch towards the hard drive and insert it into the chassis 4 Connect the data cable and power cable to the back of the hard drive s 5 Install the cover 6 Follow the procedures in After Working Inside Your Computer 25 ...

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Page 27: ...ry 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Release the memory retention clips on each side of the memory modules 4 Lift the memory modules out of the connectors on the system board 27 ...

Page 28: ...nectors on the system board Install the memory module in the order of A1 B1 A2 B2 2 Press down on the memory modules until the retention clips spring back to secure them in place 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 28 ...

Page 29: ...trusion Switch 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the intrusion switch cable from the system board 4 Slide the intrusion switch toward the chassis bottom and remove it from the system board 29 ...

Page 30: ...1 Insert the intrusion switch into the chassis rear and slide it toward the chassis top to secure it 2 Connect the intrusion switch cable to the system board 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 30 ...

Page 31: ...dures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the speaker cable from the system board 4 Unthread the speaker cable from the chassis clip 5 Press down the speaker securing tab and slide the speaker upwards to remove it 31 ...

Page 32: ...er securing tab and slide the speaker downward to secure it 2 Thread the speaker cable into the chassis clip 3 Connect the speaker cable to the system board 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 32 ...

Page 33: ...omputer 2 Remove the cover 3 Disconnect the heat sink assembly cable from the system board 4 Loosen the captive screws in the order 1 2 3 and 4 5 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 33 ...

Page 34: ...elease lever down and then move it outward to release it from the retention hook that secures it 7 Lift the processor cover 8 Lift the processor to remove it from the socket and place it in an antistatic package 34 ...

Page 35: ... Press the release lever down and then move it inward to secure it with the retention hook 4 Place the heat sink assembly into the chassis 5 Tighten the captive screws to secure the heat sink assembly to the system board 6 Connect the heat sink assembly cable to the system board 7 Install the cover 8 Follow the procedures in After Working Inside Your Computer 35 ...

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Page 37: ...Coin Cell Battery 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Press the coin cell battery inward to allow the battery to pop up from the socket 4 Lift the coin cell battery out of the computer 37 ...

Page 38: ...Cell Battery 1 Place the coin cell battery into its slot on the system board 2 Press the coin cell battery downwards until it is secured 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 38 ...

Page 39: ...w the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Disconnect the power switch cable from the system board 5 Pry the power switch cable free 6 Slide the power switch cable out through the front of the computer 39 ...

Page 40: ...tch cable in through the front of the computer 2 Secure the power switch cable to the chassis 3 Connect the power switch cable to the system board 4 Install the front bezel 5 Install the cover 6 Follow the procedures in After Working Inside Your Computer 40 ...

Page 41: ...procedures in Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Disconnect the thermal sensor cable from the system board 5 Unthread the thermal sensor cable from the chassis clips 6 Unthread the thermal sensor cable from the chassis clip 41 ...

Page 42: ...Thermal Sensor 1 Secure the thermal sensor to the chassis front 2 Thread the thermal sensor cable into the chassis clips 3 Connect the thermal sensor cable to the system board 4 Install the front bezel 5 Install the cover 6 Follow the procedures in After Working Inside Your Computer 42 ...

Page 43: ...e Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Disconnect the system fan cable from the system board 5 Unthread the system fan cable from the chassis clips 6 Slide the four grommets inward and through the slots in the front of the computer 43 ...

Page 44: ...emove the four grommets from the system fan Installing The System Fan 1 Place the system fan in the chassis 2 Pass the four grommets through the chassis and slide outwards along the grooves to secure them in place 3 Thread the system fan cable into the chassis clips 44 ...

Page 45: ...4 Connect the system fan cable to the system board 5 Install the front bezel 6 Install the cover 7 Follow the procedures in After Working Inside Your Computer 45 ...

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Page 47: ...ide Your Computer 2 Remove the cover 3 Remove the front bezel 4 Disconnect the Input Output panel or the FlyWire cable from the system board 5 Remove the screw that secures the Input Output panel to the chassis 6 Slide the Input Output panel towards the right of the system to release from chassis 47 ...

Page 48: ...lide the Input Output panel towards the left of the computer to secure to the chassis 3 Tighten the screw to secure the Input Output panel to the chassis 4 Connect the Input Output panel or the FlyWire cable to the system board 5 Install the front bezel 6 Install the cover 7 Follow the procedures in After Working Inside Your Computer 48 ...

Page 49: ...s in Before Working Inside Your Computer 2 Remove the cover 3 Remove the PSU thermal sensor 4 Disconnect the 4 pin power cable from the system board 5 Unthread the 4 pin power cable from the chassis clips 6 Disconnect the 24 pin power cable from the system board 49 ...

Page 50: ...ower cable from the chassis clip 8 Remove the screws that secure the power supply to the back of the computer 9 Push in on the blue release tab beside the power supply and slide the power towards the front of the computer 50 ...

Page 51: ...s to secure the power supply from the back of the computer 3 Thread the 24 pin power cable into the chassis clip 4 Connect the 24 pin power cable to the system board 5 Thread the 4 pin power cable into the chassis clips 6 Connect the 4 pin power cable to the system board 7 Install the PSU thermal sensor 8 Install the cover 9 Follow the procedures in After Working Inside Your Computer 51 ...

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Page 53: ...mputer 2 Remove the cover 3 Remove the front bezel 4 Remove the hard drive 5 Remove the expansion cards 6 Remove the heat sink and processor 7 Disconnect all the cables connected to the system board 8 Lift and release the expansion card latch to gain access to the screws securing the system board 53 ...

Page 54: ...d towards the front of the computer 11 Remove the system board from the chassis Installing The System Board 1 Align the system board to the port connectors on the back of the chassis and place the system board in the chassis 2 Tighten the screws securing the system board to the chassis 54 ...

Page 55: ...nect the cables to the system board 5 Install the heat sink and processor 6 Install the expansion card 7 Install the hard drive 8 Install the front bezel 9 Install the cover 10 Follow the procedures in After Working Inside Your Computer 55 ...

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Page 57: ...llow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the thermal sensor cable from the system board 4 Unthread the thermal sensor cable from the chassis clip 5 Pry the thermal sensor away from the power supply and remove from the chassis 57 ...

Page 58: ...cure the thermal sensor to the power supply 2 Thread the thermal sensor cable into the chassis clip 3 Connect the thermal sensor cable to the system board 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 58 ...

Page 59: ...or example floppy CD ROM or hard drive Keystroke Function Ctrl Alt F8 one time boot and diagnostics utility menu F12 one time boot and diagnostics utility menu Boot Menu Enhancements The boot menu enhancements are as follows Easier access Although the Ctrl Alt F8 keystroke still exists and can be used to call up the menu simply press F12 during system boot to access the menu User prompting Not onl...

Page 60: ...ces The keyboard is not the first device initialized by Setup As a result if you press a keystroke too early you lock out the keyboard When this happens a keyboard error message appears on the monitor and you cannot restart the system with the Ctrl Alt Del keys To avoid this scenario wait until the keyboard is initialized before pressing the keystroke There are two ways to know that this has happe...

Page 61: ...e the BIOS screens 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 System Setup Options NOTE Depending on the computer and its installed devices ...

Page 62: ... you to specify the order in which the computer attempts to find an operating system The options are Diskette drive USB Storage Device CD DVD CD RW Drive Onboard NIC 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 int...

Page 63: ... 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 This technology is part of the SMART Self Monitoring Analysis and Reporting Technology specification This option is disabled by default USB Configuration This field configures the integrated USB controller ...

Page 64: ...This option is disabled by default NOTE The Video setting will only be visible when a video card is installed in the system Security Internal HDD 1 Password Allows you to set change or delete the password on the system s internal hard disk drive HDD Successful changes to this password take effect immediately By default the drive will not have a password set Enter the old password Enter the new pas...

Page 65: ...hen an administrator password is set Allow Non Admin Password Changes This option is enabled by default Non Admin Setup Changes This option lets you determine whether changes to the setup option are permitted when an administrator password is set Allow Wireless Switch Changes This option is disabled by default TPM Security This option lets you control whether the Trusted Platform Module TPM in the...

Page 66: ...ation 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 User may not enter OROM configuration screens via the hotkey This option is set to Enable by default Admin Setup Lockout Allows you to enable or disable the option to enter Setup when an Admin password is set This optio...

Page 67: ...pplied after a power loss You can set the AC Recovery to Power Off default 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 ...

Page 68: ...fault 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 Boot menu enabled by default Fast Boot This option can speed up the boot process by bypassing some compatibility steps Minimal The system boots ...

Page 69: ...mechanism This option is not set by default Some graphics cards require that the SERR message mechanism be disabled 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 ImageServer IP Specifies the pri...

Page 70: ...uration group is set to Enabled with ImageServer and when Client DHCP is set to Static IP Client Subnet Mask Specifies the subnet mask of the client The default setting is 255 255 255 255 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 ...

Page 71: ...ents Displays the DellDiag event log Thermal Events Displays the thermal event log and allows you to Clear Log Power Events Allows you to clear the power event logs Clear Log BIOS Progress Events Displays the BIOS Progress event log 71 ...

Page 72: ...72 ...

Page 73: ...ible The system now includes pre POST and POST LEDs in an attempt to help identifying a possible problem with the system easier and more accurate NOTE The diagnostic lights will blink when the power button is amber or off and will not blink when it is blue This has no other significance Diagnostic Light Patterns LED Power Button Problem Description The computer is either turned off or is not recei...

Page 74: ...Button Problem Description A possible system board power supply or peripheral failure has occurred Troubleshooting Steps Power off computer leaving the computer plugged in Press and hold the power supply test button at the rear of the power supply unit If the LED next to the switch illuminates the problem may be with your system board If the LED next to the switch does not illuminate disconnect al...

Page 75: ...rts 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 only one memory module is installed try moving it to a different DIMM connector and re start the computer If available install verified working memory of the same type into your computer LED Power Button Problem Description BIOS may be corru...

Page 76: ...from the power supply unit LED Power Button Problem Description Possible peripheral card or system board failure has occurred Troubleshooting Steps Remove all peripheral cards from the PCI and PCI E slots and re start the computer If the computer boots add the peripheral cards back one by one until you find the bad one LED Power Button Problem Description A possible system board failure has occurr...

Page 77: ...processor failure has occurred Troubleshooting Steps Re seat the processor LED Power Button Problem Description Memory modules are detected but a memory failure has occurred Troubleshooting Steps If two or more memory modules are installed remove 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 t...

Page 78: ...install all USB devices and check all cable connections LED Power Button Problem Description No memory modules are detected Troubleshooting Steps 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 rei...

Page 79: ...expansion card failure has occurred Troubleshooting Steps 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 you removed then remove a different card and restart the computer Repeat this process for each expansion card installed If the computer starts normally troubleshoot the last card removed fro...

Page 80: ...entifying a problem with a device hard drive check the device to make sure it is functioning properly If the operating system is attempting to boot from a device optical drive check system setup to ensure the boot sequence is correct for the devices installed on your computer Beep Codes The computer can emit a series of beeps during start up if the display cannot show errors or problems These seri...

Page 81: ... Code 1 2 3 Cause DMA page register read write failure Code 1 3 1 through 2 4 4 Cause DIMMs not being properly identified or used Code 3 1 1 Cause Slave DMA register failure Code 3 1 2 Cause Master DMA register failure Code 3 1 3 Cause Master interrupt mask register failure Code 3 1 4 Cause Slave interrupt mask register failure Code 3 2 2 Cause Interrupt vector loading failure Code 3 2 4 81 ...

Page 82: ... Code 3 4 1 Cause Screen initialization failure Code 3 4 2 Cause Screen retrace failure Code 3 4 3 Cause Search for video ROM failure Code 4 2 1 Cause No time tick Code 4 2 2 Cause Shutdown failure Code 4 2 3 Cause Gate A20 failure Code 4 2 4 Cause Unexpected interrupt in protected mode Code 4 3 1 Cause Memory failure above address 0FFFFh Code 4 3 3 82 ...

Page 83: ...or Messages Address mark not found 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 ...

Page 84: ... correctly put spaces in the proper place and used the correct pathname Bad error correction code ECC on disk read Description The floppy or hard drive controller detected an uncorrectable read error Controller has failed Description The hard drive or the associated controller is defective Data error Description The floppy or hard drive cannot read the data For the Windows operating system run the...

Page 85: ... the drive access light turns on try a different disk 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 fo...

Page 86: ...uration information does not match the hardware configuration Invalid Memory configuration please populate DIMM1 Description DIMM1 slot does not recognize a memory module The module should be re seated or installed Keyboard failure Description A cable or connector may be loose or the keyboard or keyboard mouse controller may be faulty Memory address line failure at address read value expecting val...

Page 87: ... be faulty or improperly seated Reinstall the memory modules and if necessary replace them Memory odd even logic 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 write read failure at address read value expecting value Description A memory module may be faulty or improperly...

Page 88: ...oning 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 Not a boot diskette Description The operating system is trying to boot to a floppy disk that does not have a bootable operatin...

Page 89: ...r could not find a particular sector on the disk or the requested sector is defective Reset failed Description The disk re set operation failed Sector not found Description The operating system cannot locate a sector on the floppy or hard drive Seek error Description The operating system cannot find a specific track on the floppy disk or hard drive Shutdown failure Description A chip on the system...

Page 90: ...de of normal specifications It is advisable to immediately back up your data and replace your hard drive by calling your support desk or Dell Description During initial startup the drive detected possible error conditions When your computer finishes booting immediately back up your data and replace your hard drive for installation procedures see Adding and Removing Parts for your computer type If ...

Page 91: ...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 91 ...

Page 92: ...92 ...

Page 93: ... view information about your computer Processor Processor type Intel Core i3 series Intel Core i5 series Intel Core i7 series Intel Pentium series Intel Celeron series Total Cache Up to 8 MB cache depending on processor type Memory Type DDR3 Speed 1333 MHz Connectors Desktop Mini Tower Small Form Factor four DIMM slots Ultra Small Form Factor two DIMM slots Capacity 1 GB 2 GB and 4 GB Minimum Memo...

Page 94: ...aphics adapter Audio Integrated four Channel High Definition Audio Network Integrated Intel 82579LM Ethernet capable of 10 100 1000 Mb s communication System Information System Chipset Intel 6 Series Express Chipset DMA Channels two 82C37 DMA controllers with seven independently programmable channels Interrupt Levels Integrated I O APIC capability with 24 interrupts BIOS Chip NVRAM 80 MB 10 MB Exp...

Page 95: ... PCI Express x1 Mini Tower up to three full height cards Desktop up to three low profile cards Small Form Factor up to two low profile cards Ultra Small Form Factor none PCI Express x16 Mini Tower up to two full height cards Desktop up to two low profile cards Small Form Factor up to two low profile cards Ultra Small Form Factor none Mini PCI Express Mini Tower none Desktop none Small Form Factor ...

Page 96: ...one Small Form Factor one Ultra Small Form Factor none 2 5 inch SATA drive bays Mini Tower two Desktop one Small Form Factor one Ultra Small Form Factor one 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 Serial one 9 pin connector 16550C compatible Parallel one 25 pin...

Page 97: ...i Tower Desktop one 120 pin connector Small Form Factor Ultra Small Form Factor none PCI Express x1 data width maximum one PCI Express lane Mini Tower Desktop one 36 pin connector Small Form Factor Ultra Small Form Factor none PCI Express x16 wired as x4 data width maximum four PCI Express lanes Mini Tower Desktop Small Form Factor one 164 pin connector Ultra Small Form Factor none PCI Express x16...

Page 98: ... 7 pin connectors Memory Mini Tower Desktop Small Form Factor four 240 pin connectors Ultra Small Form Factor two 240 pin connectors Internal USB Mini Tower Desktop one 10 pin connector Small Form Factor Ultra Small Form Factor none System Fan one 5 pin connector Front panel control Mini Tower Desktop Small Form Factor one 34 pin and one 5 pin connector Ultra Small Form Factor one 20 pin and one 1...

Page 99: ...4 pin connector Controls and Lights Front of the computer Power button light Blue light Solid blue light indicates power on state blinking blue light indicates sleep state of the computer Amber light Solid amber light when the computer does not start indicates a problem with the system board or power supply Blinking amber light indicates a problem with the system board Drive activity light Blue li...

Page 100: ...nnection to the network Network activity light on integrated network adapter Yellow light A blinking yellow light indicates that network activity is present Power supply diagnostic light Green light The power supply is turned on and is functional The power cable must be connected to the power connector at the back of the computer and the electrical outlet NOTE You can test the health of the power ...

Page 101: ...er supply wattage rating Physical Height Width Depth Weight Mini Tower 36 00 cm 14 17 inches 17 50 cm 6 89 inches 41 70 cm 16 42 inches 8 87 kg 19 55 lb Desktop 36 00 cm 14 17 inches 10 20 cm 4 01 inches 41 00 cm 16 14 inches 7 56 kg 16 67 lb Small Form Factor 29 00 cm 11 42 inches 9 26 cm 3 65 inches 31 20 cm 12 28 inches 5 70 kg 12 57 lb Ultra Small Form Factor 23 70 cm 9 33 inches 6 50 cm 2 56 ...

Page 102: ... GRMS Maximum shock Operating 40 G Storage 105 G Altitude 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 102 ...

Page 103: ... 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 1 Visit support dell com 2 Select your support category 3 If you are not a U S customer select your country code at the bottom of the page or select All to see more choices 4 Select the appropriate service...

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Summary of Contents for OptiPlex 790

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Dell OptiPlex 790, Service Manual, Page: 96 / 103

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Summary of Contents for OptiPlex 790

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