Ambient-temperature detection
The MFP contains a sensor that measures the air temperature of the surrounding environment. The
MFP automatically adjusts the temperature settings in the fuser to adjust for changes in the ambient
temperature.
Engine power supply circuit
The engine power supply consists of the fuser-control circuit, the high-voltage circuit, and the low-
voltage circuit. The fuser-control and high-voltage circuits control the temperature of the fuser and
generate high-voltage according to signals from the dc controller PCA. The low-voltage circuit
generates the dc voltages that other components in the MFP use (for example the dc controller PCA,
the motors, and fans).
Figure 5-2 Power supply circuit block diagram
Engine-control system 87
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