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OptiPlex 3090 Ultra
Service Manual
Regulatory Model: D13U
Regulatory Type: D13U003
January 2021
Rev. Draft
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.
Contents
Chapter 1: Working on your computer........................................................................................... |
5 |
Safety instructions.............................................................................................................................................................. |
5 |
Before working inside your device............................................................................................................................. |
5 |
Safety precautions........................................................................................................................................................ |
6 |
Electrostatic discharge—ESD protection................................................................................................................ |
7 |
ESD field service kit ..................................................................................................................................................... |
8 |
Transporting sensitive components.......................................................................................................................... |
8 |
After working inside your device................................................................................................................................ |
9 |
Chapter 2: Removing and installing components........................................................................... |
11 |
Recommended tools........................................................................................................................................................... |
11 |
Screw List............................................................................................................................................................................. |
11 |
Major components of your system................................................................................................................................ |
13 |
Hard-drive assembly.......................................................................................................................................................... |
14 |
Removing the hard-drive assembly.......................................................................................................................... |
14 |
Installing the hard-drive assembly............................................................................................................................ |
15 |
Hard-drive bracket............................................................................................................................................................. |
17 |
Removing the hard-drive bracket............................................................................................................................. |
17 |
Installing the hard-drive bracket............................................................................................................................... |
17 |
Hard drive............................................................................................................................................................................ |
18 |
Removing the hard drive............................................................................................................................................ |
18 |
Installing the hard drive.............................................................................................................................................. |
19 |
Cover..................................................................................................................................................................................... |
21 |
Removing the cover.................................................................................................................................................... |
21 |
Installing the cover...................................................................................................................................................... |
22 |
Memory module................................................................................................................................................................. |
23 |
Removing the memory module................................................................................................................................. |
23 |
Installing the memory module................................................................................................................................... |
24 |
WLAN card.......................................................................................................................................................................... |
25 |
Removing the WLAN card......................................................................................................................................... |
25 |
Installing the WLAN card........................................................................................................................................... |
26 |
Internal solid-state drive.................................................................................................................................................. |
27 |
Removing the solid-state drive................................................................................................................................ |
27 |
Installing the solid-state drive.................................................................................................................................. |
28 |
eMMC Storage module.................................................................................................................................................... |
30 |
Removing the eMMC storage module.................................................................................................................... |
30 |
Installing the eMMC storage module...................................................................................................................... |
30 |
System fan........................................................................................................................................................................... |
31 |
Removing the system fan........................................................................................................................................... |
31 |
Installing the system fan............................................................................................................................................ |
32 |
Power button..................................................................................................................................................................... |
33 |
Removing the power button..................................................................................................................................... |
33 |
Installing the power button....................................................................................................................................... |
34 |
Coin-cell battery................................................................................................................................................................ |
36 |
Contents 3
Removing the coin-cell battery................................................................................................................................ |
36 |
Installing the coin-cell battery.................................................................................................................................. |
37 |
System board..................................................................................................................................................................... |
38 |
Removing the system board..................................................................................................................................... |
38 |
Installing the system board....................................................................................................................................... |
39 |
Heat-sink.............................................................................................................................................................................. |
41 |
Removing the heat-sink.............................................................................................................................................. |
41 |
Installing the heat-sink............................................................................................................................................... |
42 |
Replacing the chassis....................................................................................................................................................... |
44 |
Chapter 3: Software.................................................................................................................... |
45 |
Downloading Windows drivers....................................................................................................................................... |
45 |
Chapter 4: System setup............................................................................................................. |
46 |
BIOS overview................................................................................................................................................................... |
46 |
Entering BIOS setup program........................................................................................................................................ |
46 |
Boot menu..................................................................................................................................................................... |
46 |
Navigation keys.................................................................................................................................................................. |
47 |
Boot Sequence................................................................................................................................................................... |
47 |
System setup options....................................................................................................................................................... |
47 |
Updating the BIOS in Windows .................................................................................................................................... |
56 |
Updating BIOS on systems with BitLocker enabled........................................................................................... |
56 |
Updating your system BIOS using a USB flash drive.......................................................................................... |
57 |
System and setup password........................................................................................................................................... |
57 |
Assigning a system setup password....................................................................................................................... |
58 |
Deleting or changing an existing system setup password................................................................................. |
58 |
Clearing BIOS (System Setup) and System passwords.......................................................................................... |
59 |
Chapter 5: Troubleshooting......................................................................................................... |
60 |
Dell SupportAssist Pre-boot System Performance Check diagnostics............................................................... |
60 |
Running the SupportAssist Pre-Boot System Performance Check................................................................ |
60 |
WiFi power cycle................................................................................................................................................................ |
61 |
Diagnostic LED................................................................................................................................................................... |
61 |
Chapter 6: Getting help............................................................................................................... |
63 |
Contacting Dell.................................................................................................................................................................. |
63 |
4 Contents
1
Working on your computer
Topics:
•Safety instructions
Safety instructions
Prerequisites
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist:
●You have read the safety information that shipped with your computer.
●A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
About this task
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
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, 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 at the same time as touching a connector on the back of the computer.
CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.
CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and aligned.
NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the computer, replace all covers, panels, and screws before connecting to the power source.
NOTE: The color of your computer and certain components may appear differently than shown in this document.
Before working inside your device
About this task
To avoid damaging your device, perform the following steps before you begin working inside the device:
Steps
1.Ensure that you follow the Safety Instruction.
2.Ensure that your work surface is flat and clean to prevent the device cover from being scratched.
Working on your computer |
5 |
3.Turn off your device.
4.Remove the device from the stand:
Removing device from Fixed-height stand or Pro 1.0 Height-adjustable stand:
a.Slide the release latch on the stand until you hear a click to release the stand cover.
b.Slide and lift the back cover to release it from the stand.
c.Disconnect the keyboard, mouse, network, power, and display cable from the device.
d.Pull the retention latch that secures the device to the stand chassis.
e.Lift the device from the cover.
Removing device from offset VESA mount:
a.Disconnect the keyboard, mouse, network, power, and display cable from the device.
b.Push the quick release button on the VESA mount.
c.Slide and remove the monitor arm from the offset VESA mount (U/P-series monitor).
NOTE: For E-series monitor, remove the VESA cover.
d.Remove the four screws that secure the offset VESA mount to the monitor.
e.Remove the four holders on which the offset VESA mount is mounted.
f.Lift the offset VESA mount from the monitor.
g.Remove the four screws that secure the device to the offset VESA mount.
h.Lift the device away from the offset VESA mount.
Removing device from Pro 2.0 Height-adjustable stand:
a.Press the button on the side of the stand chassis, to release the stand cover.
b.Slide and lift the back cover to release it from the stand.
c.Disconnect the keyboard, mouse, network, power, and display cable from the device.
d.Slide and release the inner bar on the lower edge of the stand cover that secures the device to the stand chassis.
e.Slide and remove the device from the cover.
f.Slide the inner bar back to the lower edge of the stand cover.
Removing device on Wall Mount:
a.For full function wall mount:
i.Unlock the wall mount module.
ii.Open the wall mount cover.
iii.Disconnect the keyboard, mouse, network, power, and display cable from the device.
iv.Snap open the wall mount bracket module from the slots on the wall mount.
v.Remove the four screws that secure the device to the wall mount bracket.
vi.Lift the device away from the wall mount bracket.
b.For simple function wall mount:
i.Unmount the wall mount bracket module from the wall.
ii.Disconnect the keyboard, mouse, network, power adapter, and display cable from the device.
iii.Remove the four screws that secure the device to the wall mount bracket.
iv.Lift the device away from the wall mount bracket.
5.Press and hold the power button while the device is unplugged to ground the system board.
NOTE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface at the same time as touching a connector on the back of the computer.
Safety precautions
The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.
Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or reassembly:
●Turn off the system and all attached peripherals.
●Disconnect the system and all attached peripherals from AC power.
●Disconnect all network cables, telephone, and telecommunications lines from the system.
●Use an ESD field service kit when working inside any tabletdesktop to avoid electrostatic discharge (ESD) damage.
6 Working on your computer
●After removing any system component, carefully place the removed component on an anti-static mat.
●Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.
Standby power
Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentially powered while turned off. The internal power enables the system to be remotely turned on (wake on LAN) and suspended into a sleep mode and has other advanced power management features.
Unplugging, pressing and holding the power button for 15 seconds should discharge residual power in the system board. Remove the battery from tablets.
Bonding
Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through the use of a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare metal and never to a painted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and ensure that you remove all jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment.
Electrostatic discharge—ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards, processors, memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such as intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased density, ESD protection is an increasing concern.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.
●Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has
received a static shock and immediately generates a "No POST/No Video" symptom with a beep code emitted for missing or nonfunctional memory.
●Intermittent – Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms related to the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory integrity, intermittent memory errors, etc.
The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded") failure.
Perform the following steps to prevent ESD damage:
●Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage.
●Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.
●When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you discharge static electricity from your body.
●Before transporting a static-sensitive component, place it in an anti-static container or packaging.
Working on your computer |
7 |
ESD field service kit
The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components: anti-static mat, wrist strap, and bonding wire.
Components of an ESD field service kit
The components of an ESD field service kit are:
●Anti-Static Mat – The anti-static mat is dissipative and parts can be placed on it during service procedures. When using an anti-static mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal on the system being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly on the mat. ESD-sensitive items are safe in your hand, on the ESD mat, in the system, or inside a bag.
●Wrist Strap and Bonding Wire – The wrist strap and bonding wire can be either directly connected between your wrist and bare metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that is temporarily placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never
use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is recommended to test the wrist strap and bonding wire at least once per week.
●ESD Wrist Strap Tester – The wires inside of an ESD strap are prone to damage over time. When using an unmonitored kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check with your
regional office to find out if they have one. To perform the test, plug the wrist-strap's bonding-wire into the tester while it is strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm sounds if the test fails.
●Insulator Elements – It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are insulators and often highly charged.
●Working Environment – Before deploying the ESD Field Service kit, assess the situation at the customer location. For example, deploying the kit for a server environment is different than for a desktop or portable environment. Servers are typically installed in a rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or 30 centimeters away from sensitive parts before physically handling any hardware components
●ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an ESD-protected work surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag.
●Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
ESD protection summary
It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.
Transporting sensitive components
When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
8 Working on your computer
After working inside your device
About this task
After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your computer.
Steps
1.Install the device in the stand:
Installing the device on Fixed-height stand or Pro 1.0 Height-adjustable stand:
a.Unlock the latch on the lower chassis of the stand to remove the stand cover.
b.Align and position the top side of the device to the upper chassis of the stand back cover.
c.Align the power button on the device with the slot on the stand back cover chassis.
d.Press the device until the retention latch clicks into place and secures it.
e.Connect the keyboard, mouse, network, power, and display cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the device.
f.Slide the back cover, along with the device, into the stand until it clicks into place.
g.Lock the stand cover.
Installing the device on offset VESA mount:
a.Align the screw holes on the device to the screw holes on the offset VESA mount.
b.Install the four screws to secure the device to the offset VESA mount.
c.Align the screw holes in the offset VESA mount with the screw holes on the back cover of the monitor.
d.Install the four screws to secure the offset VESA mount to the monitor.
e.Align the tabs on the adapter that is attached to the stand, with the slots on the back of the monitor.
f.Slide the tabs on the stand adapter into its slots on the monitor.
g.Connect the keyboard, mouse, network, power, and display cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the device.
Installing the device on Pro 2.0 Height-adjustable stand:
a.Press the button on the side of the stand chassis, to release the stand cover.
b.Slide and release the inner bar on the lower edge of the stand cover.
c.Align the vents on the device with the vents on the stand cover and slide the device in the cover.
d.Slide the inner bar back to the lower edge of the stand cover to lock the device to the cover.
e.Connect the keyboard, mouse, network, power, and display cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the device.
f.Slide the back cover, along with the device, into the stand until it clicks into place.
g.Lock the stand cover.
Installing the device on Wall Mount: a. For full function wall mount:
i. Align the screw holes on the device with the screw holes on the wall mount bracket. ii. Install the four screws to secure the device to the wall mount bracket.
iii. Insert the hooks on the mounting bracket of the wall mount into the slots on the wall mount bracket module.
iv. Align and insert the hooks on the wall mount bracket module into the slots on the wall mount until it clicks into place. v. Connect the keyboard, mouse, network, power, and display cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the device.
vi.Close the stand cover.
vii.Lock the device and the stand cover. b. For simple function wall mount:
i.Align the screw holes on the device with the screw holes on the wall mount bracket.
Working on your computer |
9 |
ii. Install the four screws to secure the device to the wall mount bracket.
iii. Connect the keyboard, mouse, network, power, and display cable to the device.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the device.
iv.Align and mount the wall mount bracket module in the screws on the wall.
2.Turn on your device.
3.If required, verify that the device works correctly by running ePSA diagnostics.
10 Working on your computer
2
Removing and installing components
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Topics:
•Recommended tools
•Screw List
•Major components of your system
•Hard-drive assembly
•Hard-drive bracket
•Hard drive
•Cover
•Memory module
•WLAN card
•Internal solid-state drive
•eMMC Storage module
•System fan
•Power button
•Coin-cell battery
•System board
•Heat-sink
•Replacing the chassis
Recommended tools
The procedures in this document require the following tools:
●Phillips #0 screwdriver
●Phillips #1 screwdriver
●Plastic scribe
Screw List
The following table shows the screw list and the images for different components.
Table 1. Screw Size List
Component |
Screw type |
Quantity |
Image |
|
|
|
|
|
|
|
|
Power button |
M2x3 |
1 |
|
|
|
|
|
System board |
M2x3 |
4 |
|
|
M2x3 (captive screw) |
1 |
|
|
|
|
|
Hard-drive assembly (or non |
M2x3 |
1 |
|
Hard-drive assembly) |
|
|
|
|
|
|
|
Removing and installing components |
11 |
Table 1. Screw Size List (continued)
Component |
Screw type |
Quantity |
Image |
|
|
|
|
|
|
|
|
|
|
|
M.2 |
WLAN card |
M2x3.5 |
1 |
|
|
|
|
|
|
M.2 |
2230 Solid-state drive or |
M2x3.5 |
1 |
|
EMMC) |
|
|
|
|
|
|
|
|
|
12 Removing and installing components
Major components of your system
1. Cover
Removing and installing components |
13 |
2.Memory module
3.WLAN card
4.Solid-state drive
5.System board
6.Heat-sink
7.Chassis
8.Hard-drive assembly
9.Hard-drive cover
10.System fan
11.Power button
12.Coin-cell battery
NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
Hard-drive assembly
Removing the hard-drive assembly
Prerequisites
1. Follow the procedure in before working inside your device.
About this task
The figure indicates the location of the hard-drive assembly module and provides a visual representation of the removal procedure.
14 Removing and installing components
Steps
1.Remove the (M2x3) screw that secures the hard-drive assembly to the chassis.
2.Turn the hard-drive assembly to access the hard-drive cable.
3.Open the latch and disconnect the hard-drive cable from the connector on the system board.
4.Carefully unroute the hard-drive cable from the routing guide on the chassis.
NOTE: Observe the routing of the hard-drive cable inside the chassis as you remove them. Route the cable properly when you replace the component to prevent the cable from being pinched or crimped.
5. Remove the hard-drive assembly.
Installing the hard-drive assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
Removing and installing components |
15 |
About this task
The figure indicates the location of the hard-drive assembly module and provides a visual representation of the installation procedure.
Steps
1.Place the hard-drive assembly on the cover.
2.Route the hard-drive cable through the routing guide on the chassis.
3.Connect the hard-drive cable to the connector on the system board and close the latch to secure the cable.
4.Turn the hard-drive assembly module and align the tabs on the hard-drive assembly with the slots on the chassis.
5.Align the screw hole on the hard-drive assembly with the screw hole on the chassis.
6.Replace the M2x3 screw to secure the hard-drive assembly to the chassis.
Next steps
1. Follow the procedure in after working on your device.
16 Removing and installing components
Hard-drive bracket
Removing the hard-drive bracket
Prerequisites
1.Follow the procedure in before working inside your device.
2.Remove the hard-drive assembly.
About this task
Steps
Pull the rubber tab on the protective sleeve and lift the hard-drive module out from the hard-drive bracket.
Installing the hard-drive bracket
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
Removing and installing components |
17 |
About this task
Steps
1.Align and place the hard drive on the bracket.
2.Gently push the hard-drive into the bracket.
Next steps
1.Install the hard-drive assembly.
2.Follow the procedure in after working on your device.
Hard drive
Removing the hard drive
Prerequisites
1.Follow the procedure in before working inside your device.
2.Remove the hard-drive assembly.
3.Remove the hard-drive bracket.
About this task
The figure indicates the location of the hard-drive module and provides a visual representation of the removal procedure.
18 Removing and installing components
Steps
1.Disconnect the hard-drive cable from the connector on the hard drive.
2.Release the protective sleeve from the hard-drive.
3.Gently pull the hard-drive out of the protective sleeve.
Installing the hard drive
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the hard-drive module and provides a visual representation of the installation procedure.
Removing and installing components |
19 |
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