Dell OptiPlex 990 (Early 2011) - Manual (Page 4)

Installing the Memory .....................................................................................................24
8 Chassis Intrusion Switch........................................................................25
Removing The Chassis Intrusion Switch .........................................................................25
Installing the Intrusion Switch ........................................................................................26
9 Speaker......................................................................................................27
Removing The Speaker ...................................................................................................27
Installing the Speaker .....................................................................................................28
10 Heat Sink..................................................................................................29
Removing the Heat Sink and Processor ..........................................................................29
Installing the Heat Sink and Processor ...........................................................................31
11 Coin-Cell Battery....................................................................................33
Removing The Coin-Cell Battery .....................................................................................33
Installing The Coin-Cell Battery .......................................................................................34
12 Power-Switch Cable..............................................................................35
Removing the Power-Switch Cable ................................................................................35
Installing the Power-Switch Cable ..................................................................................36
13 Front Thermal Sensor............................................................................39
Removing the Front Thermal Sensor ...............................................................................39
Installing the Front Thermal Sensor ................................................................................40
14 Chassis Fan.............................................................................................41
Removing The System Fan ..............................................................................................41
Installing the System Fan ................................................................................................42
15 Input/Output Panel.................................................................................43
Removing the Input/Output Panel ...................................................................................43
Installing the Input/Output Panel .....................................................................................44