
74 • Root Cause Analysis
Key Points
• Check sheets with graphical representations can be used with maps,
sketches of an area, process owcharts, or other graphical represen-
tations of an area.
• ey can also be used with photos of the item in question.
EXAMPLE 10.3
A hypothetical manufacturing company has a problem with bolts being
dropped into a machine on an assembly line. Unfortunately, the bolt size in
question is used at multiple workstations, so the exact location of the prob-
lem is unknown. Extra bolts are frequently found in both nished product
at the nal inspection and in the dustpans of the cleaning crew, which indi-
cates that some ...