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

Installing The Memory .....................................................................................................28
8 Chassis Intrusion Switch........................................................................29
Removing the Chassis Intrusion Switch ..........................................................................29
Installing The Chassis Intrusion Switch ..........................................................................30
9 Speaker......................................................................................................31
Removing The Speaker ...................................................................................................31
Installing The Speaker .....................................................................................................32
10 Heat Sink..................................................................................................33
Removing The Heat Sink and Processor .........................................................................33
Installing The Heat Sink and Processor ..........................................................................35
11 Coin-Cell Battery....................................................................................37
Removing The Coin-Cell Battery .....................................................................................37
Installing The Coin-Cell Battery .......................................................................................38
12 Power-Switch Cable..............................................................................39
Removing The Power-Switch Cable ................................................................................39
Installing The Power-Switch Cable .................................................................................40
13 Front Thermal Sensor............................................................................41
Removing The Front Thermal Sensor ..............................................................................41
Installing The Front Thermal Sensor ...............................................................................42
14 Chassis Fan.............................................................................................43
Removing The System Fan ..............................................................................................43
Installing The System Fan ...............................................................................................44
15 Input/Output Panel.................................................................................47
Removing The Input/Output Panel ..................................................................................47
Installing The Input/Output Panel ....................................................................................48