The DC controller determines if the motor has failed and notifies the formatter when the motor encounters the following conditions: ● Startup failure — The motor does not reach a specified rotational count within a specified time from when the motor starts. ● Rotational failure — The rotational speed of the motor is not in the specified range for a specified time after the motor reaches a specified speed. The DC controller notifies the formatter of a BD (beam detect) failure when it detects a rotational failure of the scanner motor. The DC controller monitors the related part condition of the following motors to determine a motor failure:
● Upper cassette lifter motor ● Lower cassette lifter motor Fan control The product has three fans for preventing the temperature from rising in the product and cooling down the delivered paper. 8 Chapter 1 Theory of operation ENWW