Dell Precision Tower 3420 - Default Chapter; Table of Contents

Contents
1 Working on your computer.................................................................................5
Safety instructions................................................................................................................................. 5
Before working inside your computer..................................................................................................6
Turning off your computer................................................................................................................... 6
After working inside your computer.....................................................................................................7
2 Removing and installing components..............................................................8
Recommended tools.............................................................................................................................8
Removing the cover..............................................................................................................................8
Installing the cover................................................................................................................................9
Removing the front bezel..................................................................................................................... 9
Installing the front bezel....................................................................................................................... 9
Removing the hard drive assembly.......................................................................................................9
Installing the hard drive assembly.......................................................................................................10
Removing the optical drive..................................................................................................................11
Installing the optical drive................................................................................................................... 12
Removing the intrusion switch........................................................................................................... 13
Installing the intrusion switch............................................................................................................. 13
Removing the memory module..........................................................................................................13
Installing the memory module............................................................................................................14
Installing the optional PCIe SSD card.................................................................................................14
Removing the optional PCIe SSD card............................................................................................... 16
Removing the expansion card............................................................................................................ 16
Installing the expansion card...............................................................................................................17
Removing the power supply unit (PSU).............................................................................................. 17
Installing the power supply unit (PSU)................................................................................................18
Removing the power button...............................................................................................................19
Installing the power button.................................................................................................................19
Removing the Input/Output (I/O) panel............................................................................................ 20
Installing the Input/Output (I/O) panel.............................................................................................. 20
Removing the system fan................................................................................................................... 20
Installing the system fan......................................................................................................................21
Removing the heat sink fan cover...................................................................................................... 21
Installing the heat sink fan cover........................................................................................................22
Removing the heat sink assembly...................................................................................................... 22
Installing the heat sink assembly........................................................................................................ 23
Removing the processor.....................................................................................................................23
Installing the processor.......................................................................................................................24
3