Table 1-7 Sensors (continued)
Item Description
PS702 Media-width sensor
PS751 Top-of-Page (TOP) sensor
PS901 Main-motor rotation-number sensor; not shown
Fuser-control circuit
The fuser-control circuit monitors and controls the temperature in the fuser. The product uses on-demand
fusing. The fuser-control circuit consists of the following major components:
●
Fuser heater (H1); heats the center area of the fusing film
●
Thermal fuse (FU1): Prevents an abnormal temperature rise of fuser heater (Contact type)
●
Thermistor (TH1); detects the center temperature of the fuser heater (contact type)
Figure 1-9 Fuser control circuit
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