Dell OptiPlex 7090 Tower - Default Chapter; Table of Contents

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Chapter 1: Working inside your computer...................................................................................... 6

Safety instructions.............................................................................................................................................................. 6

Before working inside your computer.......................................................................................................................6

Safety precautions.........................................................................................................................................................7

Electrostatic discharge—ESD protection................................................................................................................7

ESD field service kit ..................................................................................................................................................... 8

Transporting sensitive components.......................................................................................................................... 9

After working inside your computer..........................................................................................................................9

Chapter 2: Removing and installing components.......................................................................... 10

Recommended tools..........................................................................................................................................................10

Screw List............................................................................................................................................................................ 10

Major components of your system................................................................................................................................. 11

Side cover............................................................................................................................................................................ 12

Removing the side cover............................................................................................................................................ 12

Installing the side cover.............................................................................................................................................. 13

Front bezel ......................................................................................................................................................................... 15

Installing the front bezel.............................................................................................................................................15

Removing the front bezel...........................................................................................................................................15

Hard-drive assembly..........................................................................................................................................................16

Removing the primary 2.5-inch hard-drive assembly..........................................................................................16

Removing the secondary 2.5-inch hard-disk drive assembly............................................................................ 17

Removing the 2.5-inch hard-disk drive bracket................................................................................................... 18

Installing the 2.5-inch hard-disk drive bracket..................................................................................................... 19

Installing the secondary 2.5-inch hard-disk drive assembly..............................................................................20

Installing the primary 2.5-inch hard-drive assembly............................................................................................ 21

3.5 in. hard-drive assembly............................................................................................................................................. 22

Removing the 3.5-inch hard-disk drive assembly................................................................................................22

Removing the 3.5-inch hard-disk drive bracket...................................................................................................23

Installing the 3.5-inch hard-disk drive bracket.....................................................................................................24

Installing the 3.5-inch hard-disk drive assembly..................................................................................................25

Solid-state drive.................................................................................................................................................................27

Installing the M.2 2230 PCIe solid-state drive..................................................................................................... 27

Removing the M.2 2280 PCIe solid-state drive................................................................................................... 27

Installing the M.2 2280 PCIe solid-state drive..................................................................................................... 29

Removing the M.2 2230 PCIe solid-state drive................................................................................................... 30

Memory module.................................................................................................................................................................. 31

Removing the memory module................................................................................................................................. 31

Installing the memory module....................................................................................................................................31

Processor fan and heat-sink assembly.........................................................................................................................32

Removing the processor fan and 125 W heat-sink assembly........................................................................... 32

Removing the processor fan.....................................................................................................................................33

Installing the processor fan.......................................................................................................................................34