3. D2 – Defining and understanding the problem

3.1 The activities

• Precise description of the malfunction (defect).

• Define the conditions under which it appears.

• Ensure that the "8D" team shares the same understanding of the problem.

• Understand how the customer perceives the problem.

• Try to reproduce the fault. Record measurements.

• Identify the effects, characterize the scope of the problem.

• Identify associated records (drawings, inspection sheet, report, complaint sheet, technical sheet, etc.).