Classification Status
Code
Item Symptom Possible Cause Remarks
Fusing SC1 Fusing high temperature The fusing roller stays at 230 °C or
more for 3 sec.
Thermistor short circuit, relay short
circuit, defective interface board (0
volt between TP3 and ground), or
defective main control board
(unchanged low output from
CN103-2B).
Service call indication appears for this
status code.
SC2 Fusing low temperature The fusing roller is at 130 °C or less for
20 seconds after the machine enters
the copy stand-by condition.
Fusing lamp broken, poor connection
of fusing lamp connector, thermistor
control failed, defective relay, or one
of the door safety switches (for the
front door, copy tray, and upper right
door) broken.
Service call indication appears for this
status code.
SC3 Fusing temperature not stabilized The fusing temperature does not
reach 175°C within 10 minutes after
the main switch is turned on.
Fusing lamp broken, thermistor short
circuit, one of the door switches (for
the front door, copy tray, and upper
right door) broken, defective relay, or
blown fusing thermofuse.
Service call indication appears for this
status code.
SC4 Fusing thermistor open Fusing thermistor open or fusing unit
connector contact failure (fusing unit
not set properly).
Service call indication appears for this
status code.
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