Dell Inspiron 14 Plus 7420 Service Manual - Page 3

Contents Chapter 1: Working inside your computer 5 Safety instructions...5 Before working inside your computer...5 After working inside your computer...8 Chapter 2: Removing and installing components 9 Recommended tools...9 Major components of Inspiron 14 Plus 7420...9 Screw list...11 Base cover...12 Removing the base cover...12 Installing the base cover...14 Battery...15 Lithium-ion battery precautions...15 Removing the battery...16 Installing the battery...17 Solid-state drive...17 Removing the M.2 2230 solid-state drive...17 Installing the M.2 2230 solid-state drive...19 Removing the M.2 2280 solid-state drive...20 Installing the M.2 2280 solid-state drive...22 Memory module...23 Removing the memory module...23 Installing the memory module...24 Wireless card...25 Removing the wireless card...25 Installing the wireless card...26 Display assembly...27 Removing the display assembly...27 Installing the display assembly...28 Power-adapter port...30 Removing the power-adapter port...30 Installing the power-adapter port...31 I/O board...31 Removing the I/O board...31 Installing the I/O board...32 Fans...33 Removing the left fan...33 Installing the left fan...34 Removing the right fan...35 Installing the right fan...36 Heat sink...37 Removing the heat sink ...37 Installing the heat sink...38 Contents 3