Dell OptiPlex 390 Mini-Tower Owner's Manual

Installing the Memory.....................................................................................................248 Chassis Intrusion Switch........................................................................25Removing The Chassis Intrusion Switch.........................................................................25Installing the Intrusion Switch........................................................................................269 Speaker......................................................................................................27Removing The Speaker...................................................................................................27Installing the Speaker.....................................................................................................2810 Heat Sink And Processor......................................................................29Removing the Heat Sink and Processor..........................................................................29Installing the Heat Sink and Processor...........................................................................3111 Coin-Cell Battery....................................................................................33Removing The Coin-Cell Battery.....................................................................................33Installing The Coin-Cell Battery.......................................................................................3412 Power Switch Cable..............................................................................35Removing the Power-Switch Cable................................................................................35Installing the Power-Switch Cable..................................................................................3713 Front Thermal Sensor............................................................................39Removing the Front Thermal Sensor...............................................................................39Installing the Front Thermal Sensor................................................................................4014 System Fan..............................................................................................41Removing The Chassis Fan..............................................................................................41Installing the Chassis Fan................................................................................................4215 Input/Output Panel.................................................................................43Removing the Input/Output Panel...................................................................................43Installing the Input/Output Panel.....................................................................................45