Before replacing a motor control board (MCB), you should:
- AAlways replace it first as boards are the most common cause of failures
- BMeasure voltage inputs, outputs, and current draw to confirm a board-level fault
- CCheck only the running belt tension
- DCall the manufacturer and request a free replacement under warranty
Correct Answer
Measure voltage inputs, outputs, and current draw to confirm a board-level fault
Explanation
MCBs are expensive. Confirming input voltage is correct, output voltage to the motor is wrong, and no other component explains the symptom before replacement avoids costly misdiagnosis.