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
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