Repair Traveler
Circuit card assembly — diagnosis & repair record
1 · Incoming failure (ATE / squawk)
| Test / step | Device / net | Measured | Limit (spec) | P/F |
|---|---|---|---|---|
The ticket tells you where to look, not always what is wrong — a flagged part may really be a cracked joint, a fixture pin, or a neighbor loading the net. Verify before replacing.
2 · Visual inspection (under magnification)
Findings / location:
3 · Power-on & rail measurements — current-limited supply
| Rail / net | Test point | Expected (per spec) | Measured | P/F |
|---|---|---|---|---|
| Input | ||||
Expected values are intentionally blank. Fill them per board from your own authorized documentation (test spec / ATP / golden-board sheet / BOM for this revision). Supply current at power-on: (vs expected ___ — high = short/latch-up, near-zero = not starting).
4 · Heartbeat — clock / reset / activity (digital)
| Check | Expected | Observed |
|---|---|---|
| Oscillator / clock | ||
| Reset releases | ||
| Bus / activity |
5 · Diagnosis
Symptom → hypothesis → isolating measurement (half-split / golden-board comparison):
6 · Repair action
| Ref des | Part removed (P/N) | Part installed (P/N · lot) | Procedure (IPC-7711/7721) |
|---|---|---|---|
7 · Root cause
Why did it fail? (A victim part needs its cause found before re-power.)
8 · Verification
Circuit Card Academy · Repair Traveler template. This is generic training scaffolding — follow your facility’s controlled traveler, process specs, and traceability requirements for flight hardware.