What is it: 5 Principles for Problem Solving is a 5 step problem solving methodology for problem solving and corrective actions for non conformances.
Why use it: Is used to report results of sorts, repairs, investigations and corrective actions against a supplier. It helps their suppliers think through a problem to get clear root causes and solutions.
When to use it: Anytime a problem needs complete understanding and investigation
How to use it: 5 Principles for Problem Solving are:
1. Define the problem (5-Why's & 2How's)
Who - model & type
What - Symptom
Why - Why is this a problem
How - How discovered?
How many - frequency of problem.
2. Identify the root cause
Q & A analysis - work toward finding root cause by repeating "Why?" at least 5 times. Investigate both Cause of Occurrence (usually "hard") and Cause of Non-detection ("soft" ).
3. Counter measures
Temporary & permanent counter measures.
Think beyond fix: c/m sometimes creates new problems. Ask, "How will this effect other
4. Confirm effectiveness of counter measure(s)
5. Feedback/ feed forward.
Apply c/m to similar processes & similar problems. Incorporate counter measures into organization & management.