Otis · 400 Elevator
Indicates a defective motor within the bill validator. This motor is responsible for transporting and stacking banknotes, so its malfunction will prevent bill acceptance and processing.
Click steps to track your progress.
Verify DC supply voltage to the bill validator motor at its input terminals against the specified nominal value.
Inspect motor power and signal cables for damage, wear, or loose connections between the controller and the motor.
Carefully inspect the bill transport mechanism for any jammed banknotes, debris, or foreign objects obstructing the motor's operation.
Check the bill validator's diagnostic interface or controller status for motor control signals, driver fault indicators, or specific sub-fault codes.