Basic Quality control Tools

Topic Analyze the possible causes of cracks on the mobile phone screen due to minor impact. Present the analysis results in the form of a the Ishikawa Diagram Note constructing steps: a. Identify the problem ("Cracks on the mobile phone screen"). b. Draw spines and bones (Methods, Machines (equipment), People (manpower), Materials, Measurement, Environment). c. Identify different areas where problem may arise from. d. Identify what these specific causes could be. e Use the finished diagram to brainstorm solutions to the main problems. 15 Cause-effect diagram template Measurement Policies Material Machine/Plant Quality Problem Men/People Environment Methods/Procedures Why should we use cause-and-effect diagram? It helps to determine the root cause of a problem or quality characteristic using a structured approach. It encourages group participation and utilizes group knowledge of the process. They use an orderly, easy-to-read format. It indicates possible causes of variation in a process. It increases knowledge of the process by helping everyone to learn more about the factors at work and how they relate. It identifies areas where data should be collected for further study. 16