• Code: SC52-02
• Description: Rotation of the cooling fan /1 (FM3) and /2 (FM4) are checked. An abnormal condition occurs with the FM3 and FM4 EM signal a specified period of time after FM3 and FM4 turns ON. This abnormal condition recurs even a specified period of time after FM3 and FM4 are turned OFF and then turned ON, and an error detection signal (24V cut off) is not detected.
• Causes: AC drive board (ACDB) Printer control board (PRCB) Cooling fan /1 (FM3) Cooling fan /2 (FM4) Loose connection

• Code: SC52-03#
• Description: The blowout of ICP for the cooling fan /1 (FM3) in the AC drive board (ACDB) is checked. An abnormal condition occurs with the FM3 EM signal a specified period of time after FM3 turns ON. This abnormal condition recurs even a specified period of time after FM3 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is detected.
• Causes: AC drive board (ACDB) Cooling fan /1 (FM3) Wiring harness earth fault

• Code: SC52-04#
• Description: Rotation of the cooling fan /1 (FM3) is checked. An abnormal condition occurs with the FM3 EM signal a specified period of time after FM3 turns ON. This abnormal condition recurs even a specified period of time after FM3 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is not detected.
• Causes: AC drive board (ACDB) Cooling fan /1 (FM3) Loose connection

• Code: SC52-05#
• Description: The blowout of ICP for the cooling fan /2 (FM4) in the AC drive board (ACDB) is checked. An abnormal condition occurs with the FM4 EM signal a specified period of time after FM4 turns ON. This abnormal condition recurs even a specified period of time after FM4 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is detected.
• Causes: AC drive board (ACDB) Cooling fan /2 (FM4) Wiring harness earth fault

• Code: SC52-06#
• Description: Rotation of the cooling fan /2 (FM4) is checked. An abnormal condition occurs with the FM4 EM signal a specified period of time after FM4 turns ON. This abnormal condition recurs even a specified period of time after FM4 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is not detected.
• Causes: AC drive board (ACDB) Cooling fan /2 (FM4) Wiring harness earth fault

• Code: SC52-07
• Description: The rotation of the cooling fan /3 (FM6) is checked and +24V power source is also checked. An abnormal condition occurs with the FM6 EM signal a specified period of time after FM6 turns ON. This abnormal condition recurs even a specified period of time after FM6 is turned OFF and then turned ON, and an error detection signal (24V cut off) is detected.
• Causes: AC drive board (ACDB) Cooling fan /3 (FM6) Wiring harness earth fault Loose connection DC power supply /2 (DCPS2)

• Code: SC52-08
• Description: The blowout of ICP for the cooling fan /3 (FM6) in the AC drive board (ACDB) is checked. An abnormal condition occurs with the FM6 EM signal a specified period of time after FM6 turns ON. This abnormal condition recurs even a specified period of time after FM6 is turned OFF and then turned ON, and an error detection signal (blowout of ICP) is detected.
• Causes: AC drive board (ACDB) Cooling fan /3 (FM6) Wiring harness earth fault Loose connection DC power supply /2 (DCPS2)

• Code: SC52-09
• Description: Rotation of the cooling fan /3 (FM6) is checked. An abnormal condition occurs with the FM6 EM signal a specified period of time after FM6 turns ON. This abnormal condition recurs even a specified period of time after FM6 is turned OFF and then turned ON, and an error detection signal (24V cut off/blowout of ICP) is not detected.
• Causes: AC drive board (ACDB) Cooling fan /3 (FM6) Wiring harness earth fault Loose connection DC power supply /2 (DCPS2)