S U M M A RY OF PRO D U C T
4.6.4 Fusing
The temperature change of the heat roller’s surface is changed to the resistance value through the thermis- tor. By converting the voltage value, which impressed to the resistance, to the digital value through the AD converter, the temperature is decided. The AC power is controlled by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of the controlling range while controlling the fusing, the error stated in the table occurs. (For the domestic model, the
4.6.4.1 Heat Lamp Method
Error
Open heat error
Lower heat error
Description
When warming up, it has been lower than 68°C over 28 seconds
•Standby:
It has been lower than 80°C over 10 seconds
•Printing:
-2 consecutive pages: it has been lower than 145°C over 4 seconds.
-3 consecutive page; it has been 25°C lower
than the fixed fusing temperature over 4 seconds.
DCU | LED Displat |
60All LED are blinking.
62All LED are blinking
Over heat error | It have been higher than 220°C over 3 seconds | 68 All LED are blinking |
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4.6.4.2 Q-PID Method
Error
Open heat error
Lower heat error
Over heat error
Description
When preheating, it has been lower than 68°C over 15 seconds.
•After finishing the preheating stage,
it has not reached 100°C (preheating stop temperature) during 15 seconds since the temperature is over 68°C.
•Printing
1)When the main motor is on and after 0.92 second, it has not reached the 160°C during 20 seconds.
2)From the 2 consecutive pages, it has been 20°C lower than the fusing temperature over 4 seconds.
•the error is not displayed immediately when it has been over 220°C over 3 seconds.
The temperature after the 3 seconds is checked. If it is over 240°C, it is error.
•If the temperature has been higher than 220°C over 25 seconds, it is an error even through the temperature doesn’t reach 240°C.
DCU | LED Displat |
60All LED are blinking
62All LED are blinking
68 All LED are blinking
Service Manual
Samsung Electronics
