Removing the I/O board.......................................................... 55Prerequisites.....................................................................................................55Procedure.........................................................................................................55Replacing the I/O board........................................................... 57Procedure.........................................................................................................57Post-requisites................................................................................................. 57Removing the status-light board........................................... 58Prerequisites.....................................................................................................58Procedure........................................................................................................ 58Replacing the status-light board............................................62Procedure........................................................................................................ 62Post-requisites................................................................................................. 62Removing the system board....................................................63Prerequisites.....................................................................................................63Procedure........................................................................................................ 63Replacing the system board....................................................68Procedure........................................................................................................ 68Post-requisites.................................................................................................68Removing the display assembly..............................................70Prerequisites.....................................................................................................70Procedure......................................................................................................... 71Replacing the display assembly.............................................. 73Procedure.........................................................................................................73Post-requisites................................................................................................. 746