Engineers are needed to create the diagnostic and repair procedures but skilled technicians can and should be the ones to implement them. "Fault detected. Repl

Engineers are needed to create the diagnostic and repair procedures but skilled technicians can and should be the ones to implement them. "Fault detected. Replace Sub-Assembly D, Board 3." is the kind of instruction that can be given to a factory worker to complete a repair. An engineer's time would be wasted performing this kind of work.