Dell OptiPlex 7090 Tower Service Manual - Page 3

Contents 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 Installing the processor fan and 125 W heat-sink assembly 35 Contents 3