Removing and installing components. Dell OptiPlex 3090

About this task

The following images indicate the location of the front bezel and provide a visual representation of the removal procedure.

Steps

1. Gently pry and release the front cover sequentially from the top.

2. Rotate the front cover outward from the chassis.

Removing and installing components 15

3. Remove the front bezel from the chassis.

Installing the front bezel

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the front bezel and provide a visual representation of the installation procedure.

Steps

1. Align and insert the front cover into the slots on the chassis.

2. Rotate the front cover towards the chassis and snap it into place.

16 Removing and installing components

Next steps

1. Install the

2. Follow the procedure in After working inside your computer

2.5-inch hard drive

Removing the 2.5-inch hard-drive assembly

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

1. Follow the procedure in Before working inside your computer

About this task

The following images indicate the location of the 2.5-inch hard-drive assembly and provide a visual representation of the removal procedure.

Steps

1. Disconnect the hard-drive data cable and power cable from the connectors on the hard drive.

2. Push the left tab towards the hard drive to free the assembly from the chassis.

3. Release the hard-drive assembly from the tabs on the right side and slide the hard-drive assembly out.

NOTE: Note the orientation of the hard drive so that you can replace it correctly.

Removing and installing components 17

Removing the hard-drive bracket

Prerequisites

2. Remove the

2.5-inch hard-drive assembly

3. Remove the

About this task

The following images indicate the location of the hard-drive bracket and provide a visual representation of the removal procedure.

Steps

1. Pull the two tabs from the hard-drive bracket away from the hard drive.

2. Slide the hard-drive towards the right to free it from the mounting points on the bracket and lift it away from the system.

Installing the hard-drive bracket

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the hard-drive bracket and provides a visual representation of the installation procedure.

18 Removing and installing components

Steps

1. Align the hard drive with the mounting points on the bracket and place the hard drive onto it.

2. Pull the tabs on the right side of the bracket until the hard drive clicks into place.

Next steps

1. Install the

2.5-inch hard-drive assembly

2. Install the

3. Follow the procedure in After working inside your computer

Installing the 2.5-inch hard-drive assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 2.5-inch hard-drive assembly and provides a visual representation of the installation procedure.

Removing and installing components 19

Steps

1. Place the tabs on the right side of the hard-drive bracket onto the holders on the chassis and push the left side of the bracket down until it clicks into place.

NOTE: Use the arrows seen on the bracket as guides to identify the tabs on the tray.

2. Connect the hard-drive data and power cables to the connectors on the hard drive.

Next steps

1. Install the

2. Follow the procedure in After working inside your computer

3.5-inch hard drive

Removing the 3.5-inch hard-drive assembly

Prerequisites

1. Follow the procedure in before working inside your computer

2. Remove the

1. Follow the procedure in before working inside your computer

About this task

The following images indicate the location of the 3.5-inch hard-drive assembly and provides a visual representation of the removal procedure.

20 Removing and installing components

Steps

1. Disconnect the hard-drive data cable and power cable from the connectors on the hard drive.

2. Push the left tab towards the hard drive to free the assembly from the chassis.

3. Release the hard-drive assembly from the tabs on the right side and slide the hard-drive assembly out.

NOTE: Note the orientation of the hard drive so that you can replace it correctly.

Removing the 3.5-inch hard drive

Prerequisites

2. Remove the

3.5-inch hard-drive assembly

3. Remove the

About this task

The following images indicate the location of the 3.5-inch hard drive and provide a visual representation of the removal procedure.

Removing and installing components 21

Steps

1. Pull the two tabs from the hard-drive caddy away from the hard drive.

2. Slide the hard-drive towards the right to free it from the mounting points on the caddy and lift it away from the system.

Installing the 3.5-inch hard drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 3.5-inch hard drive bracket and provides a visual representation of the installation procedure.

22 Removing and installing components

Steps

1. Align the hard drive with the mounting points on the caddy and place the hard drive onto it.

2. Pull the tabs on the right side of the bracket until the hard drive clicks into place.

Next steps

1. Install the

2. Follow the procedure in After working inside your computer

Installing the 3.5-inch hard-drive assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the 3.5-inch hard-drive assembly and provides a visual representation of the installation procedure.

Removing and installing components 23

Steps

1. Place the tabs on the right side of the hard-drive caddy onto the holders on the chassis and push the left side of the caddy down until it clicks into place.

NOTE: Use the arrows seen on the caddy as guides to identify the tabs on the tray.

2. Connect the hard-drive data and power cables to the connectors on the hard drive.

Next steps

1. Install the

2. Follow the procedure in after working inside your computer

M.2 solid-state drive

Removing the M.2 2230 PCIe solid-state drive

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

5. Remove the

24 Removing and installing components

About this task

The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

Steps

1. Remove the screw (M2x3) that secures the solid-state drive to the system board.

2. Slide and lift the solid-state drive off the system board.

Installing the M.2 2230 PCIe solid-state drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

Removing and installing components 25

Steps

1. Align the solid-state drive with the socket on the system board and slide it in.

2. Replace the screw (M2X3) that secures the M.2 PCIe solid-state drive to the system board.

Next steps

1. Install the

2. Install the

3. Install the

4. Install the

5. Follow the procedure in After working inside your computer

Removing the M.2 2280 PCIe solid-state drive

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

5. Remove the

About this task

The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

26 Removing and installing components

Steps

1. Remove the screw (M2x3) that secures the solid-state drive to the system board.

2. Slide and lift the solid-state drive off the system board.

Installing the M.2 2280 PCIe solid-state drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

Removing and installing components 27

Steps

1. Align the solid-state drive with the socket on the system board and slide it in.

2. Replace the screw (M2x3) that secures the solid-state drive to the system board.

Next steps

1. Install the

2. Install the

3. Install the

4. Install the

5. Follow the procedure in After working inside your computer

Hard-drive and optical-drive bracket

Removing the hard-drive and optical-drive bracket

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

2.5/3.5-inch hard-drive caddy

4. Remove the

2.5/3.5-inch hard-drive

About this task

The following images indicate the location of the hard-drive and optical-drive bracket and provide a visual representation of the removal procedure.

28 Removing and installing components

Removing and installing components 29

Steps

1. Remove the hard-drive power and data cables that are routed via the locking mechanism.

2. Remove the cables from the routing points on the bracket.

3. Move the lock handle from the locking mechanism towards the left to unlock the bracket and detach it from the chassis.

4. Hold the lock handle to lift the bracket.

5. Lift the bracket upwards and detach it from the mounting points on the top portion of the chassis.

6. Disconnect the power and SATA cables from the optical drive and lift the bracket away from the computer.

Installing the hard-drive and optical-drive bracket

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the hard-drive and optical-drive bracket and provides a visual representation of the installation procedure.

30 Removing and installing components

Removing and installing components 31

Steps

1. Connect the power and SATA cables to the optical drive while holding the bracket upside down.

2. Hold the bracket upright and align the mounting points with the ones on the chassis.

3. Push the bracket until the assembly is secured onto the chassis.

4. Move the lock handle from the locking mechanism towards the right to lock the bracket in place.

5. Route the optical drive's power and data cables through the routing guide on the bracket.

6. Route the hard-drive power and SATA cables through the routing guide on the lock.

Next steps

1. Install the

2. Install the

3. Install the

4. Follow the procedure in After working inside your computer

Optical drive

Removing the slim optical-drive

Prerequisites

1. Follow the procedure in before working inside your computer

2. Remove the

3. Remove the

4. Remove the

2.5/3.5-inch hard-drive

5. Remove the

32 Removing and installing components

About this task

The following images indicate the location of the slim optical-drive and provide a visual representation of the removal procedure.

Steps

1. Press the tab on the optical drive to release the optical drive from the hard-drive and optical drive bracket.

2. Slide the optical drive out of the hard-drive and optical drive bracket.

Installing the slim optical-drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the slim optical-drive and provides a visual representation of the installation procedure.

Removing and installing components 33

Steps

1. Insert and slide in the optical drive into the hard-drive and optical drive bracket.

2. Push the optical drive unit until it clicks in place.

Next steps

1. Install the

2. Install the

2.5/3.5-inch hard-drive

3. Install the

4. Install the

5. Follow the procedure in after working inside your computer

WLAN card

Removing the WLAN card

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

34 Removing and installing components

5. Remove the

About this task

The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.

Steps

1. Remove the single (M2x3) screw that secures the metal bracket over the WLAN card to the system board.

2. Slide and lift the WLAN card bracket away from the WLAN card.

3. Disconnect the antenna cables from the WLAN card.

4. Slide and remove the WLAN card from the connector on the system board.

Installing the WLAN card

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the wireless card and provides a visual representation of the installation procedure.

Removing and installing components 35

Steps

1. Connect the antenna cables to the WLAN card.

The following table provides the antenna-cable color scheme for the WLAN card of your computer.

Table 2. Antenna-cable color scheme

Connectors on the wireless card

Main (white triangle)

Auxiliary (black triangle)

Antenna-cable color

White

Black

2. Place the WLAN card bracket to secure the antenna cables.

3. Insert the WLAN card into the connector on the system board.

4. Install the single (M2x3) screw to secure the WLAN card.

Next steps

1. Install the

2. Install the

3. Install the

4. Install the

5. Follow the procedure in After working inside your computer

36 Removing and installing components

Fan assembly

Removing the heat-sink and fan assembly

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

5. Remove the

About this task

The following images indicate the location of the heat-sink and fan assembly and provide a visual representation of the removal procedure.

Steps

1. Disconnect the fan cable.

2. Loosen the four captive screws that secure the heat-sink and fan assembly to the system.

3. Lift the heat-sink and fan assembly from the system.

Installing the heat-sink and fan assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the heat-sink and fan assembly and provides a visual representation of the installation procedure.

Removing and installing components 37

Steps

1. Place the heat-sink and fan assembly onto the system board.

2. Tighten the captive screws that secure the heat-sink and fan assembly to the system board.

3. Connect the fan cable to the connector on the system board.

Next steps

1. Install the

2. Install the

3. Install the

4. Install the

5. Follow the procedure in After working inside your computer

Coin-cell battery

Removing the coin-cell battery

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

NOTE: Removing the coin-cell battery resets the BIOS setup program settings to default. It is recommended that you note the BIOS setup program settings before removing the coin-cell battery.

About this task

The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure.

38 Removing and installing components

Steps

1. Using a plastic scribe, gently pry the coin-cell battery out of the socket on the system board.

2. Remove the coin-cell battery from the system.

Installing the coin-cell battery

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.

Removing and installing components 39

Steps

1. Place the coin cell battery onto the socket on the system board. Ensure that the "+" sign is facing up and the tabs on the lower portion of the socket and holding the battery.

2. Gently push the battery into the socket until it locks in place.

Next steps

1. Install the

2. Install the

3. Follow the procedure in After working inside your computer

Expansion card

Removing the graphics card

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

About this task

The following images indicate the location of the graphics card and provide a visual representation of the removal procedure.

40 Removing and installing components

Steps

1. Pull the metal tab to open the expansion card latch.

2. Pull the release tab at the base of the expansion card.

3. Lift the graphics card away from the connector on the system board.

Installing the graphics card

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the graphics card and provides a visual representation of the installation procedure.

Removing and installing components 41

Steps

1. Align the graphics card with the connector on the system board.

2. Place the card in the connector and press down firmly.

NOTE: Ensure that the card is firmly seated.

3. Close the expansion card latch and press it until it clicks into place.

Next steps

1. Install the

2. Follow the procedure in After working inside your computer

42 Removing and installing components

Memory modules

Removing the memory modules

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

NOTE: CAUTION: To prevent damage to the memory module, hold the memory module by the edges. Do not touch the components on the memory module.

About this task

The following images indicate the location of the memory modules and provide a visual representation of the removal procedure.

Steps

1. Pull the securing clips from both side of the memory module until the memory module pops up.

2. Remove the memory module from the memory-module slot.

Installing the memory modules

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the memory modules and provides a visual representation of the installation procedure.

Removing and installing components 43

Steps

1. Align the notch on the memory module with the tab on the memory-module slot.

2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place.

NOTE: If you do not hear the click, remove the memory module and reinstall it.

Next steps

1. Install the

2. Install the

3. Install the

4. Follow the procedure in after working inside your computer

Processor

Removing the processor

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

heat-sink and fan assembly

3. Remove the

4. Remove the

5. Remove the

About this task

The following images indicate the location of the processor and provide a visual representation of the removal procedure.

44 Removing and installing components

Steps

1. Press down and push the release lever away from the processor to release it from the securing tab.

2. Lift the lever upward to lift the processor cover.

CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.

3. Gently lift the processor from the processor socket.

Installing the processor

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the processor and provides a visual representation of the installation procedure.

Removing and installing components 45

Steps

1. Align the pin-1 corner of the processor with the pin 1 corner of the processor socket, and then place the processor in the processor socket.

NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner on the processor socket. When the processor is properly seated, all four corners are aligned at the same height. If one or more corners of the processor are higher than the others, the processor is not seated properly.

2. When the processor is fully seated in the socket, close the processor cover.

3. Press down and push the release lever under the securing tab to lock it.

Next steps

1. Install the

2. Install the

3. Install the

fan assembly

4. Install the

5. Follow the procedure in After working inside your computer

46 Removing and installing components

Power-supply unit

Removing the power-supply unit

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

About this task

The following images indicate the location of the power-supply unit and provide a visual representation of the removal procedure.

Removing and installing components 47

48 Removing and installing components

Steps

1. Remove the SATA cables from the retention clip on the support bracket.

2. Remove the three screws (M6X32) and slide the support bracket out from the slot.

3. Unroute the power-supply cable from the retention clip on the chassis.

4. Remove the three screws (M6X32) that secure the power-supply unit to the back of the chassis.

5. Press the power-supply unit release latch and slide the unit into the chassis.

6. Remove the power-supply unit out of the chassis.

Installing the power-supply unit

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the power-supply unit and provides a visual representation of the installation procedure.

Removing and installing components 49

50 Removing and installing components

Removing and installing components 51

Steps

1. Align and place the power-supply unit into the slot on the chassis.

2. Slide the power-supply unit into the slot until it clicks in place.

3. Replace the three screws (6X32) to secure the power-supply unit to the chassis.

4. Reroute the power-supply cables through retention clips and connect it to the connectors on the system board.

5. Place the support bracket into the slot and secure it with the three screws (6X32).

6. Insert the SATA cables through the retention clip on the support bracket.

Next steps

1. Install the

2. Install the

3. Install the

4. Follow the procedure in After working inside your computer

Intrusion switch

Removing the intrusion switch

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

About this task

The following images indicate the location of the intrusion switch and provides a visual representation of the removal procedure.

52 Removing and installing components

Steps

1. Disconnect the intruder cable from the connector on the system board.

2. Slide and remove the intrusion switch from the chassis.

Installing the intrusion switch

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the intrusion switch and provides a visual representation of the installation procedure.

Removing and installing components 53

Steps

1. Insert the intrusion switch into its slot and slide the switch to secure it into the slot.

2. Connect the intruder cable to the connector on the system board.

Next steps

1. Install the

2. Follow the procedure in After working inside your computer

Power button

Removing the power button

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the

5. Remove the

About this task

The following images indicate the location of the power button and provides a visual representation of the removal procedure.

54 Removing and installing components

Steps

1. Disconnect the power-button cable from the connector on the system board.

2. Press the release tabs on the power-button head and slide the power-button cable out from the front-side chassis of the computer.

3. Pull the power-button cable out from the computer.

Installing the power button

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the power button switch and provides a visual representation of the installation procedure.

Removing and installing components 55

Steps

1. Insert the power-button cable into the slot from the front-side of the computer, and press the power-button head until it clicks into the place in the chassis.

2. Align and connect the power-button cable to the connector on the system board.

Next steps

1. Install the

2. Install the

3. Install the

4. Follow the procedure in After working inside your computer

Optional I/O modules (HDMI/VGA/DP/Serial)

Removing optional I/O modules (HDMI/VGA/DP/Serial)

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

heat-sink and fan assembly

4. Remove the

About this task

The following images indicate the location of the optional I/O Modules and provides a visual representation of the removal procedure.

Steps

1. Remove the two (M3X3) screws that secure the optional I/O module to the computer chassis.

56 Removing and installing components

2. Disconnect the I/O-module cable from the connector on the system board.

3. Remove the I/O module from the computer.

Installing optional I/O modules (HDMI/VGA/DP/Serial)

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the system board and provides a visual representation of the installation procedure.

Steps

1. To remove the dummy metal bracket, insert a flathead screwdriver in the hole of the bracket, push the bracket to release the bracket, and then lift the bracket out from the system.

NOTE: This step is only applicable if there is no existing I/O module installed on the system.

2. Insert the optional I/O module into its slot from the inside of your computer.

3. Connect the I/O cable to the connector on the system board .

Removing and installing components 57

4. Replace the two (M3X3) screws to secure the optional I/O module to the system.

Next steps

1. Install the

fan assembly

2. Install the

3. Follow the procedure in After working inside your computer

System board

Removing the system board

Prerequisites

1. Follow the procedure in Before working inside your computer

2. Remove the

3. Remove the

4. Remove the