Dell OptiPlex 790 Owner'S Manual Download Page 35

Page: 35 / 96

System Fan

Removing the System Fan

1. Follow the procedures in

Before Working Inside Your Computer

2. Remove the

cover

3. Remove the

front bezel

4. Remove the

drive cage

5. Remove the

fan shelter

6. Disconnect the fan cable from the system board.

7. Slide the grommets inward along the groove and pass through the chassis.

8. Lift and remove the system fan from the computer.

Summary of Contents for OptiPlex 790

Page 1: ...Dell OptiPlex 790 Small Form Factor Owner s Manual Regulatory Model D03S Regulatory Type D03S001 ...

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: ...er 11 Removing the Cover 11 Installing The Cover 11 3 Front Bezel 13 Removing the Front Bezel 13 Installing The Front Bezel 14 4 Expansion Card 15 Removing the Expansion Card 15 Installing The Expansion Card 16 5 Optical Drive 17 Removing the Optical Drive 17 Installing The Optical Drive 18 6 Hard Drive 19 Removing the Hard Drive 19 Installing The Hard Drive 20 7 Memory 21 Removing the Memory 21 ...

Page 4: ...he Heat Sink And Processor 30 11 Coin Cell Battery 31 Removing the Coin Cell Battery 31 Installing The Coin Cell Battery 32 12 Power Switch Cable 33 Removing the Power Switch Cable 33 Installing the Power Switch Cable 34 13 System Fan 35 Removing the System Fan 35 Installing The System Fan 36 14 Input Output Panel 37 Removing The Input Output I O Panel 37 Installing The Input Output I O Panel 39 1...

Page 5: ...lter 53 Removing the Fan Shelter 53 Installing The Fan Shelter 53 19 System Setup 55 System Setup 55 Boot Menu 55 Boot Menu Enhancements 55 Timing Key Sequences 56 Navigation 56 System Setup Options 57 20 Troubleshooting 67 Diagnostic LEDs 67 Beep Codes 74 Error Messages 77 21 Specifications 85 Technical Specifications 85 22 Contacting Dell 95 Contacting Dell 95 ...

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Page 7: ... 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 the back of the computer CAUTION Handle components a...

Page 8: ...er 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 Recommended Tools The procedures in this document may...

Page 9: ...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 11: ...r 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 3 Follow the procedures in After Working Inside Your Computer 11 ...

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Page 13: ...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 13 ...

Page 14: ... bottom edge of the front bezel into the slots on the chassis front 2 Rotate the bezel toward the computer to engage the front bezel retention clips until they click into place 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 14 ...

Page 15: ...latch upward 5 Pull the release lever away from the PCIe x16 card until you 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 6 Pull the release lever away from the PCIe x4 card if any 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 15...

Page 16: ...on the system board and press down to secure it in place 2 Insert the PCIe x16 card if any into the connector on the system board and press down to secure it in place 3 Install the front bezel 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 16 ...

Page 17: ... in Before Working Inside Your Computer 2 Remove the cover 3 Remove the data cable and power cable from the back of the optical drive 4 Lift the blue tab and slide the optical drive inwards to remove it from the computer 5 Remove the optical drive from the bracket 17 ...

Page 18: ...ve into the bracket 2 Lift the blue tab and slide the optical drive outwards to insert it into the computer 3 Connect the data cable and power cable to the optical drive 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 18 ...

Page 19: ...ard drive from the chassis 4 Press the retention clips inwards and slide the hard drive bracket from the drive cage 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 6 Release the screws that secure the 2 5 inch hard drive to the top of the hard drive bracket 19 ...

Page 20: ...screws to secures the two hard drives to the hard drive bracket 2 Flex the hard drive bracket and then insert the single hard drive or two hard drives into the bracket 3 Press the retention clips inwards and slide the hard drive bracket into the drive cage 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 20 ...

Page 21: ...es in Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Release the memory retention clips on each side of the memory modules 6 Lift the memory modules out of the connectors on the system board 21 ...

Page 22: ...d Install the memory modules 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 drive cage 4 Install the front bezel 5 Install the cover 6 Follow the procedures in After Working Inside Your Computer 22 ...

Page 23: ... Chassis Intrusion Switch 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the intrusion switch cable from system board 4 Slide the intrusion switch inwards and remove it from the system board 23 ...

Page 24: ...ch 1 Insert the intrusion switch into the chassis rear and slide it outward 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 24 ...

Page 25: ...mputer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Disconnect the speaker cable from the system board 6 Unthread the speaker cable from the fan shelter clip 7 Press the speaker securing tab and slide the speaker towards the right of the computer to release it 25 ...

Page 26: ...the speaker securing tab and slide the speaker towards the left of the computer to secure it 3 Thread the internal speaker cable into the fan shelter clip 4 Connect the speaker cable to the system board 5 Install the drive cage 6 Install the front bezel 7 Install the cover 8 Follow the procedures in After Working Inside Your Computer 26 ...

Page 27: ...Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Disconnect the heat sink assembly cable from the system board 6 Release the Input Output Board or the FlyWire cable from the routing channel on the heat sink 7 Loosen the captive screws in the order of 1 2 3 and 4 27 ...

Page 28: ...it from the computer Lay the assembly with the fan facing downwards and with the thermal grease facing upwards 9 Press the release lever down and then move it outward to release it from the retention hook that secures it 10 Lift the processor cover 28 ...

Page 29: ...11 Lift the processor to remove it from the socket and place it in an antistatic package 29 ...

Page 30: ...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 Secure the Input Output Board or the FlyWire cable to the routing channel on the heat sink 7 Connect the heat sink assembly cable to the system board 8 Install the drive cage 9 Install the front bezel 10 Install the cover 11 Follow the procedures in Aft...

Page 31: ...ttery 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Press the coin cell battery inward to allow the battery to pop up from the socket 5 Lift the coin cell battery out of the computer 31 ...

Page 32: ... 1 Place the coin cell battery into its slot on the system board 2 Press the coin cell battery downwards till it is secured 3 Install the front bezel 4 Install the cover 5 Follow the procedures in After Working Inside Your Computer 32 ...

Page 33: ...es in Before Working Inside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Disconnect the power switch cable from the system board 6 Unthread the power switch cable from the chassis clip 7 Pry the power switch cable away from the chassis 33 ...

Page 34: ...able in through the front of the computer 2 Secure the power switch cable to the chassis 3 Thread the power switch cable into the chassis clip 4 Connect the power switch cable to the system board 5 Install the drive cage 6 Install the front bezel 7 Install the cover 8 Follow the procedures in After Working Inside Your Computer 34 ...

Page 35: ...de Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Remove the fan shelter 6 Disconnect the fan cable from the system board 7 Slide the grommets inward along the groove and pass through the chassis 8 Lift and remove the system fan from the computer 35 ...

Page 36: ...he system fan in the chassis 3 Pass the four grommets through the chassis and slide outward along the grooves to secure them in place 4 Connect the fan cable to the system board 5 Install the fan shelter 6 Install the drive cage 7 Install the front bezel 8 Install the cover 9 Follow the procedures in After Working Inside Your Computer 36 ...

Page 37: ...Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Unthread the I O panel or the FlyWire cable from the fan shelter clip and heat sink 6 Disconnect the I O panel or the FlyWire cable from the system board 7 Remove the single screw that secures the I O panel to the chassis 37 ...

Page 38: ...8 Slide the I O panel towards the right of the computer to release it from the chassis 9 Remove the I O panel 38 ...

Page 39: ...chassis 3 Tighten the screw to secure the I O panel to the chassis 4 Connect the I O panel or the FlyWire cable to the system board 5 Thread the I O panel or the FlyWire cable into the fan shelter clip and the routing on the heat sink 6 Install the drive cage 7 Install the front bezel 8 Install the cover 9 Follow the procedures in After Working Inside Your Computer 39 ...

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Page 41: ...nside Your Computer 2 Remove the cover 3 Remove the front bezel 4 Remove the drive cage 5 Remove the fan shelter 6 Disconnect the 4 pin power cable from the system board 7 Unthread the 4 pin power cable from the chassis clips 8 Disconnect the 24 pin power cable from the system board 41 ...

Page 42: ...at secure the power supply from the back of the computer 10 Push in on the blue release tab beside the power supply and slide the power supply towards the front of the computer 11 Lift the power supply out of the computer 42 ...

Page 43: ...ower supply to the back of the computer 3 Connect the power cable to the system board 4 Thread the power cable into the chassis clips 5 Connect the power cable to the system board 6 Install the fan shelter 7 Install the drive cage 8 Install the front bezel 9 Install the cover 10 Follow the procedures in After Working Inside Your Computer 43 ...

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Page 45: ... the front bezel 4 Remove the drive cage 5 Remove the expansion cards 6 Remove the heat sink and processor 7 Remove the fan shelter 8 Disconnect all the cables connected to the system board and move the cables away from the chassis 9 Lift and release the expansion card latch to gain access to the screws securing the system board 45 ...

Page 46: ...hat secure the system board to the chassis 11 Remove the 7 mm hex screw that secures the system board to the chassis 12 Slide the system board towards the front of the computer 13 Remove the system board from the chassis 46 ...

Page 47: ...ose the expansion card latch 5 Connect the cables to the system board 6 Connect the intrusion switch cable SATA cables Input Output board cable system fan cable power switch cable internal speaker cable and the power supply cables to the system board 7 Install the fan shelter 8 Install the heat sink and processor 9 Install the expansion card 10 Install the drive cage 11 Install the front bezel 12 ...

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Page 49: ...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 the drive cage handle toward the back of the computer into the unlocked position 6 Rotate the drive cage upward using the handle and lift the drive cage free off the chassis 49 ...

Page 50: ...7 Remove the data cable and power cable from the back of the hard drive 8 Remove the drive cage from the computer 50 ...

Page 51: ...rd drive 3 Flip over the drive cage and insert it into the chassis The drive cage tabs are secured by the slots in the chassis 4 Slide the drive cage handle toward the front of the computer into the locked position 5 Connect the data cable and power cable to the back of the optical drive 6 Install the front bezel 7 Install the cover 8 Follow the procedures in After Working Inside Your Computer 51 ...

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Page 53: ...emove the cover 3 Unthread the cables in the fan shelter clip 4 Lift the fan shelter free from the computer Installing The Fan Shelter 1 Insert the fan shelter into the computer 2 Thread the cables into the fan shelter clip 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 53 ...

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Page 55: ...e 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 only is the menu easy to access when you are prompted to use the keystroke on the BIOS splash screen see image below The keystr...

Page 56: ...nitor 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 happened The keyboard lights flash The F2 Setup prompt appears in the top right hand corner of the screen during boot The second method is good if the monitor is already warmed up If it is not the sys...

Page 57: ... Asset Tag Ownership Date Manufacture Date and the Express Service Code Memory Information Displays Memory Installed Memory Available Memory Speed Memory Channels Mode Memory Technology DIMM 1 Size DIMM 2 Size DIMM 3 Size and DIMM 4 Size Processor Information Displays Processor Type Core Count Processor ID Current Clock Speed Minimum Clock Speed Maximum Clock Speed Processor L2 Cache Processor L3 ...

Page 58: ...bled w PXE Enabled w ImageServer NOTE Depending on the computer and its installed devices the items listed in this section may or may not appear Serial Port Allows you to define the serial port settings You can set the serial port to Disabled Auto COM1 COM2 COM3 COM4 NOTE The operating system may allocate resources even though the setting is disabled SATA Operation Allows you to configure the oper...

Page 59: ...ge Devices HDD memory key floppy USB aware OS always see USB Mass Storage devices irrespective of this setting provided the port is enabled If USB port is enabled device attached to this port is enabled and available for OS If USB port is disabled the OS cannot see any device attached to this port Enable USB Controller Disable USB Mass Storage Dev Disable USB Controller NOTE USB keyboard and mouse...

Page 60: ...acters allowed for Admin and System passwords Admin Password Min Admin Password Max System Password Min System Password Max Password Bypass Allows you to bypass the System Boot Password and the internal HDD password prompts during a system restart Disabled Always prompt for the system and internal HDD password when they are set This option is disabled by default Reboot Bypass Bypass the password p...

Page 61: ...utrace This field lets you Activate or Disable the BIOS module interface of the optional Computrace Service from Absolute Software Deactivate This option is disabled by default Disable Activate Chassis Intrusion Allows you to enable or disable the chassis intrusion feature You can set this option to Clear Intrusion Warning Enabled by default if chassis intrusion is detected Disable Enable On Silen...

Page 62: ...efault Intel SpeedStep Allows you to enable or disable the Intel SpeedStep mode of the processor This option is enabled by default C States Control Allows you to enable or disable the additional processor sleep states This option is enabled by default Intel TurboBoost Allows you to enable or disable Inel TurboBoost mode of the processor Disabled Does not allow the TurboBoost driver to increase the...

Page 63: ...e Controls the speed of the system fan This option is disabled by default NOTE When enabled the fan runs at full speed Wake on LAN This option allows the computer to power up from the off state when triggered by a special LAN signal Wake up from the Standby state is unaffected by this setting and must be enabled in the operating system This feature only works when the computer is connected to AC p...

Page 64: ... is set to Thorough 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 enabled by default VT for Direct I O Enables or disables the Virtual Machine Monitor VMM from utilizing the additional hardw...

Page 65: ...y IP port of the ImageServer with which the client communicates The default IP port is 06910 NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer Client DHCP Specifies how the client obtains the IP address Static IP DNS enabled by default NOTE This field is only relevant when the Integrated NIC control in the System C...

Page 66: ...vant 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 License Status Displays the current license status System Logs BIOS Events Allows you to clear the system event logs Clear Log DellDiag Events Displays the DellDiag event log Thermal Events Displays the thermal event log and allows you to Clear Log Powe...

Page 67: ...e 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 receiving power Troubleshooting Steps Re seat the power cable in the power connector at the back of ...

Page 68: ...omputer 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 all internal and external peripherals and press and hold the power supply test button If it illuminates there could be a problem with ...

Page 69: ... 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 corrupt or missing Troubleshooting Steps The computer hardware is operating normally but the BIOS may be corrupt or missing LED Power Butt...

Page 70: ...em 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 occurred Troubleshooting Steps Disconnect all internal and external peripherals and re start the compu...

Page 71: ...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 72: ...s occurred Troubleshooting Steps Re 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 ha...

Page 73: ...are using is supported by your computer LED Power Button Problem Description A possible 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 expansi...

Page 74: ...r is plugged into a discrete graphic card Ensure that all hard drives and optical drive cables are properly connected to the system board If there is an error message on the screen identifying 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 seq...

Page 75: ...failure Code 1 1 3 Cause NVRAM Code 1 1 4 Cause ROM BIOS checksum failure Code 1 2 1 Cause Programmable interval timer Code 1 2 2 Cause DMA initialization failure 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 Ma...

Page 76: ...NVRAM configuration Code 3 3 4 Cause Video Memory Test failure 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 76 ...

Page 77: ...4 4 Cause Cache test failure Error 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...

Page 78: ...ption 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 chkdsk utility to check the file structure of the floppy or hard drive For any other operating system run the appropriate corresponding utility Decreasing available memory Description One or more memory modules may be faulty or...

Page 79: ...tion The hard drive failed initialization Hard disk drive controller failure Description The hard drive failed initialization Hard disk drive failure Description The hard drive failed initialization Hard disk drive read failure Description The hard drive failed initialization Invalid configuration information please run SETUP program Description The computer configuration information does not matc...

Page 80: ...dules 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 seated Reinstall the memory modules and if necessary r...

Page 81: ...n it Insert a bootable floppy disk Plug and play configuration error Description The computer encountered a problem while trying to configure one or more cards Read fault Description The operating system cannot read from the floppy or hard drive the computer could not find a particular sector on the disk or the requested sector is defective Requested sector not found Description The operating syst...

Page 82: ...WARNING Dell s Disk Monitoring System 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 Description During initial startup the drive detected possible error conditions When your computer finishes booting immediately back ...

Page 83: ...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 83 ...

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Page 85: ...Intel Core i3 series Intel Core i5 series Intel i7 Quad Core series Intel Pentium Dual Core series Intel Celeron Dual Core series Total Cache up to 8 MB cache depending on processor type System Information System Chipset Intel 6 Series Express chipset BIOS Chip NVRAM 64 Mbits 8 MB located at SPI_2 on chipset 16 Mbits 2 Mb located at SPI_1 on chipset Memory Type DDR3 Speed 1333 MHz Connectors Deskt...

Page 86: ... adapter Video memory up to 1 7 GB shared video memory Microsoft Windows Vista and Windows 7 Audio Integrated four Channel High Definition Audio Network Integrated Intel 82579LM Ethernet capable of 10 100 1000 Mb s communication Expansion Bus Bus Type PCI 2 3 PCI Express 2 0 SATA 1 0 2 0 3 0 USB 2 0 Bus Speed PCI Express x1 slot bidirectional speed 500 MB s x16 slot bidirectional speed 16 GB s SAT...

Page 87: ...ow profile cards Small Form Factor up to one low profile cards Ultra Small Form Factor none Mini PCI Express Mini Tower none Desktop none Small Form Factor none Ultra Small Form Factor up to one half height card Drives Externally Accessible 5 25 inch drive bays Mini Tower two Desktop one Small Form Factor one slim line bay Ultra Small Form Factor one slim line bay Internally Accessible 3 5 inch SA...

Page 88: ... 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 Mini Tower Desktop Small Form Factor Front Panel 4 Back Panel 6 Ultra Small Form Factor Front Panel 2 Back Panel 5 Video 15 pin VGA connector 20 pin DisplayPort connector NOTE Available video connector...

Page 89: ...m Factor one 164 pin connector Ultra Small Form Factor none PCI Express x16 data width maximum 16 PCI Express lanes Mini Tower Desktop Small Form Factor one 164 pin connector Ultra Small Form Factor none Serial ATA Mini Tower four 7 pin connectors Desktop Small Form Factor three 7 pin connectors Ultra Small Form Factor two 7 pin connectors Memory Mini Tower Desktop Small Form Factor four 240 pin c...

Page 90: ...lue 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 light Blinking blue light indicates that the computer is reading data from or wr...

Page 91: ...uter and the electrical outlet NOTE You can test the health of the power system by pressing the test button When the system power supply voltage is within specification the self test LED lights up If the LED does not light up the power supply may be defective AC power must be connected during this test Power Wattage Maximum Heat Dissipation Voltage Mini Tower 265 W 1390 BTU hr 100 VAC to 240 VAC 5...

Page 92: ...7 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 inches 24 00 cm 9 45 inches 3 27 kg 7 20 lb Environmental Temperature range Operating 10 C to 35 C 50 F to 95 F Storage 40 C to 65 C 40 F to 149 F Relative humidity maximum Operating 20 to 80 non condensing Storage 5 to 95 non condensing ...

Page 93: ...Environmental 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 93 ...

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Page 95: ... 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, Owner'S Manual, Page: 35 / 96

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Summary of Contents for OptiPlex 790

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