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

Installing The Chassis Intrusion Switch ..........................................................................22
8 Speaker......................................................................................................23
Removing the Internal Speaker .......................................................................................23
Installing The Internal Speaker .......................................................................................24
9 Heat Sink....................................................................................................25
Removing the Heat Sink ..................................................................................................25
Installing The Heat Sink ..................................................................................................27
10 Processor................................................................................................29
Removing the Processor .................................................................................................29
Installing The Processor .................................................................................................30
11 Coin-Cell Battery....................................................................................31
Removing the Coin-Cell Battery ......................................................................................31
Installing The Coin-Cell Battery .......................................................................................32
12 Chassis Fan.............................................................................................33
Removing the System Fan ...............................................................................................33
Installing The System Fan ...............................................................................................34
13 Input/Output Panel.................................................................................35
Removing the Input/Output Board ...................................................................................35
Installing the Input/Output Board ....................................................................................36
14 Power Supply..........................................................................................37
Removing the Power Supply ...........................................................................................37
Installing The Power Supply ...........................................................................................38
15 System Board..........................................................................................39
Removing the System Board ...........................................................................................39
Installing The System Board ...........................................................................................42