5 . Quality, change & lifecycle
Uncontrolled design changes mid-production are the leading cause of scrapped material and yield failure. Every modification must be rigorously controlled, tracked, and financially accounted for.
This chapter details the commercial management of the product lifecycle. We establish the workflows for processing Engineering Change Orders (ECOs), handling Return Material Authorizations (RMAs), and managing component
- 5.1 Engineering change management
Uncontrolled variation is the primary driver of manufacturing failure. In an electronics manufacturing environment, a modification to a Bill of Materials (BOM), a Gerber file, or a firmware version wi...
- 5.2 Deviations / waivers / concessions
Rigid adherence to specification is the baseline for quality, but manufacturing reality occasionally demands flexibility to maintain continuity of supply. A shortage of a specific resistor brand or a...
- 5.3 Customer complaints → containment → 8d/CAPA
Unresolved field failures degrade contract margins and invite liability claims. A complaint is not merely a service ticket; it is a signal of process control deviation. Every external defect report mu...
- 5.4 Quality assurance & RMA
RMA (Return Material Authorization) is not a waste disposal channel; it is a forensic feedback loop. A loose RMA process bleeds margin through unjustified credits and obscures critical design flaws. E...
- 5.5 End of life management
EOL is a financial event, not just an operational stop. A poorly managed discontinuation results in "Stranded Inventory" (dead cash) or "Service Gaps" (breach of contract). The objective is a controll...