Power Bank CAPA 8D Checklist & Root Cause Analysis
Move recurring defects and customer escapes from containment to verified root cause and proven corrective action. Use CAPA / 8D when simple correction is not enough.
CAPA / 8D — 4 Practical Checks
Record the exact SKU, issue owner, affected lot, evidence, verified cause, corrective action, validation result and closure status.
Best for: defining the failure and protecting current production or customers.
SKU / issue owner: ___
Failure mode / where / when: ___
Affected lot / quantity: ___
Hold / quarantine / sorting: ___
Temporary inspection / protection: ___
Status: Contained / Recheck / Open
Best for: proving why the defect occurred and why existing controls missed it.
Occurrence cause: ___
Escape / detection cause: ___
Evidence / reproduction: ___
Known-good comparison: ___
Alternative causes eliminated: ___
Decision: Proven / Rework Analysis / Open
Best for: confirming the permanent fix works without creating new risk.
Design / component / process change: ___
Inspection / document change: ___
Validation sample / lot: ___
Before / after evidence: ___
Effective-lot result: ___
Decision: Effective / Conditional / Retest
Best for: locking the fix into controlled production and deciding closure.
BOM / drawing / firmware update: ___
WI / control-plan update: ___
Supplier / incoming control: ___
Similar-SKU review: ___
Old-stock disposition: ___
Closure: Closed / Conditional / Open
Rule: containment or rework is not closure. Root cause must be supported by evidence, the escape point must be addressed, and corrective action must be validated on the effective production state before CAPA / 8D is closed.
CAPA / 8D Closure Decision & Next Gate
Repeat defect, customer escape or systemic failure requires structured ownership and containment.
Occurrence cause, escape cause or effectiveness evidence is still unverified.
The corrective action is implemented but effective-lot or recurrence-prevention evidence is still being confirmed.
Causes are verified, controls are updated and effectiveness is demonstrated on the released production state.
IPQC → · Production QC → · Pre-Shipment → · Factory Evidence →