Most SMT downtime is not caused by defects—but by slow or unclear recovery.
A well-designed recovery strategy can save more uptime than buying faster machines.
Recovery includes:
NG routing
Review decision
Restart logic
No standard NG flow
Over-engineering review
Operator confusion
Separate review from production
Use offline review where possible
Define clear stop/go rules
Buffers without recovery logic only delay problems.
Mean recovery time
Line restart success rate
Repeat NG frequency
→ Buffer Strategy
→ AOI Optimization
→ Inspection Optimization Pillar
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