Ienfa-36502

| Symptom | Likely cause | Corrective action | |---------|--------------|--------------------| | Unit fails to boot, red LED | Corruption in configuration sector | Re-flash application + config via JTAG | | Intermittent communication | Common mode noise on bus | Install ferrites; verify shield ground | | Watchdog reset every few minutes | Task overrun due to interrupt storm | Check interrupt priorities; use profiler | | Analog reading drifts with temperature | Reference voltage temperature coefficient > 25 ppm/°C | Replace with external REF (e.g., LM4040) |