Practical bench worksheet

Evidence-based repair case sheet

Fill in the fields, then select Print / Save as PDF. Entries stay in your browser; this worksheet does not upload device data.

All lessons

Device & authorization

Model / exact variantIC / board markingRepair dateTechnician / student IDInitial symptom / customer consent scope

Evidence & measurements

Power setup, current limit, shunt, calibrationReadings & conditionsUSB mode / logs / errorsHypotheses & confidenceNext safe discriminating testRepair intervention + post-repair verification

Safety & review checklist

Correct model/PCB revision establishedBattery and external-power hazards assessedPad identity verified before applying any powerNo destructive operation without authorization and backup reviewUncertainty explicitly recorded and final checks repeated

Educational template. Do not enter names, phone numbers, IMEI, or credentials into shared/printed records unless required and lawfully protected.