The DC controller determines if a motor has failed and notifies the formatter when it encounters the following conditions: ● Startup failure: the motor does not reach a specified speed 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. ● Lock detection (for the residual toner feed motor): the value of the motor drive signal voltage is not in the specified range for a specified time. Fans The product has four fans for preventing the temperature from rising in the product.
Table 1-6 Fans Abbreviation Name Cooling area Type Speed FM1 Power supply fan Around the power supply unit Intake Full/half FM2 Cartridge fan Around the cartridges Intake Full/half FM3 Delivery fan Around the delivery unit Intake Full/half FM4 Exhaust fan 1 Around the cartridge Exhaust Full/half The DC controller determines if there is a fan failure and notifies the formatter if the fan locks for a specified time from when the fan starts. ENWW Engine-control system 9