1. Describe the Problem(Who, What, Where,When, Why, How)2. Contain the Problema.)How to help the client screen out the problematic product"b.) should be taken to prevent the problem product from continuing,Strict screening, full inspection and inventory check."3. Identify the Root Cause4M1E:Man、Machine、Material、Method 、EnvironmentFor example, staff changed? operation method changed? materials change? the environment?4. Formulate and Verify Corrective ActionsDraw up countermeasures and methods5. Prevent the Problem"a.)Other similar production, although the problem has not yet occurred,it also need to make synchronous improvements."b.)working instructions are illustrated . operators fully understand the requirements