Dell OptiPlex 7090 Small Form Factor 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...14 Intrusion switch...15 Removing the intrusion switch...15 Installing the intrusion switch...15 Front bezel...16 Removing the front bezel...16 Installing the front bezel...17 Hard drive...19 Removing the 2.5/3.5-inch hard-drive caddy...19 Removing the 2.5-inch hard-drive...20 Installing the 2.5/3.5-inch hard-drive caddy...21 Installing the 2.5-inch hard-drive...22 Solid-state drive...23 Removing the M.2 2230 solid-state drive...23 Installing the M.2 2230 solid-state drive...24 Removing the M.2 2280 solid-state drive...25 Installing the M.2 2280 solid-state drive...26 Optical drive...28 Removing the hard-drive and optical-drive bracket 28 Installing the hard-drive and optical-drive bracket 29 Removing the slim optical-drive...31 Installing the slim optical-drive...32 SD-card reader...33 Removing the SD-card reader...33 Installing the SD-card reader...34 WLAN card...35 Removing the WLAN card...35 Installing the WLAN card...36 Fan and heat-sink assembly...38 Contents 3