• Code: SC52-10
• Description: When the print is started, an error detection signal of the cooling fan /1 (FM3) or the cooling fan /2 (FM4) is detected.
• Causes: AC drive board (ACDB) Cooling fan /1 (FM3) Cooling fan /2 (FM4)

• Code: SC52-11
• Description: When the print is started, an error detection signal of the cooling fan /3 (FM6) is detected.
• Causes: AC drive board (ACDB) Cooling fan /3 (FM6)

• Code: SC53-01
• Description: A speed error signal of the fusing motor (M1) is checked. An error detection signal is detected twice in succession a specified period of time after M1 turns ON. (The first signal is ignored.)
• Causes: Fusing motor (M1)

• Code: SC53-02#
• Description: The 24V power source for the total counter (TCT) is checked. When TCT is turned ON from OFF, an error detection signal (blowout of ICP/24V cut off) is detected.
• Causes: AC drive board (ACDB) Total counter (TCT) DC power supply /2 (DCPS2) Key counter (KCT) Main relay (RL1)

• Code: SC53-03#
• Description: The blowout of ICP for TC in the AC drive board (ACDB) is checked. When the total counter (TCT) is turned ON from OFF, an error detection signal (blowout of ICP) is detected. However, an error detection signal (24V cut off) is not detected.
• Causes: AC drive board (ACDB) Total counter (TCT) DC power supply /2 (DCPS2) Key counter (KCT) Main relay (RL1)

• Code: SC53-04#
• Description: The 24V power source for the key counter (KCT) is checked. When KCT is turned ON from OFF, an error detection signal (blowout of ICP/24V cut off) is detected.
• Causes: AC drive board (ACDB) Total counter (TCT) DC power supply /2 (DCPS2) Key counter (KCT) Main relay (RL1)

• Code: SC53-05#
• Description: The blowout of ICP for KCT in the AC drive board (ACDB) is checked. When the key counter (KCT) is turned ON from OFF, an error detection signal (blowout of ICP) is detected. However, an error detection signal (24V cut off) is not detected.
• Causes: AC drive board (ACDB) Total counter (TCT) DC power supply /2 (DCPS2) Key counter (KCT) Main relay (RL1)

• Code: SC53-06
• Description: The blowout of a 12V ICP for the AC drive board (ACDB) is checked. In the serial initial communication, a signal of the blowout of a 12V ICP (AC drive) is detected.
• Causes: Printer control board (PRCB) AC drive board (ACDB) DC power supply /1 (DCPS1) Loose connection