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18    1 Troubleshooting Methodology





































               Figure 1.8  Example of a change log




               1.4.8„ Troubleshooting Methodology Summary


               There are many useful tools that can be applied to troubleshooting. This chapter
               detailed many of these tools but especially focused on the STOP methodology of
               troubleshooting and the 4M method.
               STOP troubleshooting focuses on:
                  ƒ Systematic
                  ƒ Think
                  ƒ Observe
                  ƒ Proceed
               The 4M method is how all of the defects in this book are discussed. All defects are
               considered based on:
                  ƒ Molding process
                  ƒ Mold
                  ƒ Machine
                  ƒ Material
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