Lower Electronics Bay Cover................................................................................171 Opening the electronics bay...........................................................................171 Upper Electronics Bay Cover ...............................................................................173 Closing the electronics bay.............................................................................172 Removing the upper electronics bay cover........................................................173 Installing the upper electronics bay cover .........................................................174 Removing the Electronics Bay...............................................................................175 Removing the electronics bay..........................................................................175 Installing the electronics bay ...........................................................................176 Electronics Bay Cooling Fan ................................................................................177 Removing the electronics bay cooling fan.........................................................177 Installing the electronics bay cooling fan ..........................................................178 Controller Board ................................................................................................179 Removing the controller board ........................................................................179 Installing the controller board..........................................................................181 Single Board Computer (SBC)..............................................................................182 Removing the single board computer ...............................................................182 Power Distribution I/O Card................................................................................184 Reinstalling the single board computer .............................................................184 Removing the I/O card ..................................................................................185 Installing the I/O card ...................................................................................186 Power Distribution Board (PDB) ............................................................................187 Removing the power distribution board............................................................187 Installing the power distribution board .............................................................190 Hard Drive ........................................................................................................191 Removing the hard drive ................................................................................191 Installing the hard drive..................................................................................193 Line Filter...........................................................................................................194 Removing the line filter...................................................................................194 Installing the line filter ....................................................................................195 Circuit Breaker...................................................................................................196 Removing the circuit breaker...........................................................................196 AC Input ...........................................................................................................197 Installing the circuit breaker ............................................................................197 Removing the AC Input ..................................................................................198 Installing the AC Input....................................................................................198 Power Switch.....................................................................................................199 Removing the Power Switch............................................................................199 Installing the power switch..............................................................................200