• Code: SC36-06
• Description: Thermistor /4 (TH4) low abnormality detection (hardware). The output voltage of the TH4 is detected as a low temperature (- 6°C or lower) or high temperature (240.5°Cor higher) abnormality in the comparator circuit.
• Causes: Printer control board (PRCB) AC drive board (ACDB) Fusing heater lamp /1 (L2) Fusing heater lamp /2 (L3) Fusing heater lamp /3 (L4) Thermistor /1 (TH1) Thermistor /2 (TH2) Thermistor /3 (TH3) Thermistor /4 (TH4)

• Code: SC41-01
• Description: The scanner home sensor (PS51) does not turn ON within a specified period of time after the home position search is started.
• Causes: Scanner drive board (SDB) Scanner motor (M13) Scanner home sensor (PS5) DC power supply /2 (DCPS2) Wiring harness earth fault Loose connection

• Code: SC41-02
• Description: When the speed of the polygon motor (M17) is being switched, a speed lock signal is not detected within a specified period of time.
• Causes: Scanner drive board (SDB) Polygon motor drive board (PMDB) Polygon motor (M17)

• Code: SC42-01
• Description: The rotation of the scanner cooling fan (FM7) is checked, and 24V power source is also checked. An abnormal condition occurs with the FM7 EM signal a specified period of time after FM7 turns ON. This abnormal condition recurs even a specified period of time after FM7 is turned OFF and then turned ON, and an error detection signal (24V cut off) is detected.
• Causes: Scanner drive board (SDB) Scanner cooling fan (FM7) DC power supply /2 (DCPS2) Wiring harness earth fault Loose connection

• Code: SC42-04
• Description: The rotation of the write unit cooling fan /1 (FM5) is checked, and 24V power source is also checked. An abnormal condition occurs with the FM5 EM signal a specified period of time after FM5, the write unit cooling fan /2 (FM8) turns ON. This abnormal condition recurs even a specified period of time after FM5/FM8 is turned OFF and then turned ON, and an error detection signal (24V cut off) is detected.
• Causes: Write unit cooling fan /1 (FM5) Overall control board (OACB) DC power supply /2 (DCPS2) AC drive board (ACDB) Wiring harness earth fault

• Code: SC42-05
• Description: The blowout of ICP for the write unit cooling fan /1 (FM5) in the AC drive board (ACDB) is checked. An abnormal condition occurs with the FM5 EM signal a specified period of time after FM5, the write unit cooling fan /2 (FM8) turns ON. This abnormal condition recurs even a specified period of time after FM5/FM8 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is detected.
• Causes: Write unit cooling fan /1 (FM5) Overall control board (OACB) DC power supply /2 (DCPS2) AC drive board (ACDB) Wiring harness earth fault

• Code: SC42-06
• Description: The rotation of the write unit cooling fan /1 (FM5) is checked. An abnormal condition occurs with the FM5 EM signal a specified period of time after FM5 and write unit cooling fan /2 (FM8) turns ON. This abnormal condition recurs even a specified period of time after FM5/FM8 is turned OFF and then turned ON, and an error detection signal (24V cut off/blowout of ICP) is not detected.
• Causes: Write unit cooling fan /1 (FM5) Write unit cooling fan /2 (FM8) AC drive board (ACDB) Wiring harness earth fault Loose connection

• Code: SC42-07
• Description: When the print is started, an error detection signal of the writing section cooling fan /1 (FM5) is detected.
• Causes: Write unit cooling fan /1 (FM5) Write unit cooling fan /2 (FM8) AC drive board (ACDB) Wiring harness earth fault Loose connection