Temperature Control - Samsung SCX-82x0 series Service Manual

2.6.4 Temperature control

When the main switch turns on, the CPU turns on the fusing lamp. The lamp stays on until the NC sensors
detect the standby temperature. Then the CPU raises the temperature to the printing temperature.
NC Sensor2
Overheat Protection
The CPU cuts power to the fusing lamp in the following cases:
• The fuser belt temperature detected by the NC sensors becomes higher than 198℃.
The following components are used if thermistor overheat protection fails.
• Two thermostats for the fuser belt get into line with the common ground line of the fusing lamp.
• If one of the thermostat temperatures becomes higher than 170°C, it opens and cuts power to the fusing
lamp. If the other thermostat temperature becomes higher than 170°C, it also opens and cuts power to the
fusing lamp.
Service Manual
2. Product Description
NC Sensor1
Thermostat 1
2-39
Lamp 1(700W) : Center heating
Thermostat 2
Lamp 2(600W) :
Side heating
SAMSUNG ELECTRONICS