Service engineer's glossary

POST — power-on self-test. MTBF — time to first failure. Hidden defect — appears later. External inspection — the first diagnostic stage.

Intake act — records condition on entry. Defect report — fault and part list. Work completion act — handover to client. Warranty card — terms and conditions.

OEM — original manufacturer part. Compatible — non-original equivalent. Refurb — restored part. Used — from a donor unit. Donor marking — the compatibility key.

Diagnostics → estimate → client consent → repair → QC → handover. Check point — pre-handover verification. Repeat repair — warranty comeback.

Norm-hour — the labor billing base. Part markup — 20–50%. Diagnostics — free with repair or paid. Complexity factor — a multiplier on the base price.

Repair warranty — legally minimum until manufacturer warranty ends or 6 months. Claim procedure — written complaint before court. Consumer protection — the field's base law.