AKA | Defect Location Checksheet, Concentration Diagram |
Classification | Data Collecting (DC) |
A defect map displays the location of defects and simplifies the process of data collection and repair. Problem locations are marked so that repair staff know where to look.
To point to the location of defects or problems on rejected products.
To mark or check off the locations of defects on an assembly diagram for the purpose of collecting frequency data of the various defects observed.
→ | Select and define problem or opportunity |
→ | Identify and analyze causes or potential change |
Develop and plan possible solutions or change | |
Implement and evaluate solution or change | |
Measure and report solution or change results | |
Recognize and reward team efforts |
Research/statistics | |
Creativity/innovation | |
4 | Engineering |
Project management | |
1 | Manufacturing |
Marketing/sales | |
3 | Administration/documentation |
Servicing/support | |
2 | Customer/quality metrics |
Change management |
before
Data Collection Strategy
Checksheet
Checklist
Observation
Quality Chart
after
Pareto Chart
Problem Specification
Failure Mode Effect Analysis
Potential Problem Analysis (PPA)
Countermeasures Matrix
Use checksheets to record and summarize various defect map data.
STEP 1 A defect map can be drawn for specific parts, assemblies, or complete units of product. Assembly drawings can also be used as defect maps. See example Sub-Assembly No. 314—Location of Defects.
STEP 2 During inspection of parts, assemblies, or units, the observed location of defects is marked on defect maps.
STEP 3 Defect types, locations, and frequencies are summarized on a checksheet as shown in the example.
STEP 4 Use this type of historical defect data to prepare a problem specification statement.
STEP 5 Provide notes on drawings, and date all documentation.
Sub-Assembly No. 314—Location of Defects