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Our line is still meeting its shipped-output target, but first-pass yield has slipped and the rework station is busier than it used to be. The product mix has changed a little, so I’m not sure whether this points to a process problem or just a shift in what we’re running.
When reviewing a first-pass yield measurement, which supporting figures help reveal the cause? I’m especially interested in how teams separate genuine process drift from changes in product mix, inspection criteria, or how rework is recorded.
