Cpu

(6)Temperature detection configuration

Thermistor is a device whose resistance decreases as it detects a higher temperature. Thus its input voltage to CPU changes and then CPU judges whether this change is normal or abnormal. If one of the fuser roller thermistors is broken, the control circuit judges that the fuser roller tem- perature is extremely low and keeps turning the IH coil ON. As a result, the fuser roller tempera- ture rises, and possibly activates the thermostat which is a safety protection device. To prevent this in advance, CPU works to detect whether each thermistor is broken or not.

Also, the thermistors constantly check the temperature of IH coil to prevent it from excessive heating by IH circuit abnormality, LGC circuit abnormality or thermistor abnormality. The therm- istors automatically turn OFF the power when the temperature of IH coil exceeds the specified temperature.

	+5	CPU
Man		CPU
Man
thermstor
		37 PC4/AN4

Edge thermstor

3 PC/AN

Fig. 13-406

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved 13 - 11	e-STUDIO350/352/353/450/452/453
	FUSER UNIT / PAPER EXIT SECTION

350, 353, 453, 452 specifications

The Toshiba 452, 282, and 352 models represent a significant leap in multifunction printing technology, designed for office environments that prioritize efficiency, reliability, and advanced features. These models are part of Toshiba's commitment to innovation and sustainability, emphasizing quality output while reducing environmental impact.

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FUSER UNIT / PAPER EXIT SECTION

350, 353, 453, 452 specifications