• Code: SC42-10
• Description: The rotation of the suction fans /2 (FM7) and /3 (FM8) is checked. An abnormal condition occurs with the FM7/FM8 EM signal a specified period of time after the FM7/ FM8 turns ON. This abnormal condition recurs even a specified period of time after the FM7/FM8 is turned OFF and then turned ON, and an error detection signal (24V cut off/blowout of a fuse) is not detected.
• Causes: AC drive board (ACDB) Suction fan /2 (FM7) Suction fan /3 (FM8)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC42-16
• Description: The rotation of the polygon cooling fan (FM18) is checked, and the 24V power source is also checked. An abnormal condition occurs with the FM18 EM signal a specified period of time after the FM18 turns ON. This abnormal condition recurs even a specified period of time after the FM18 is turned OFF and then turned ON, and an error detection signal (24V cut off) is detected.
• Causes: DC power supply /2 (DCPS/ 2)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC42-17
• Description: The blowout of a fuse for the polygon cooling fans (FM18) in the AC drive board (ACDB) is checked. An abnormal condition occurs with the FM18 EM signal a specified period of time after the FM18 turns ON. This abnormal condition recurs even a specified period of time after the FM18 is turned OFF and then turned ON, and an error detection signal (blowout of a fuse) is detected. At this time, an error detection signal (24V cut off) is not detected.
• Causes: AC drive board (ACDB) Polygon cooling fan (FM18)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC42-18
• Description: Rotation of the polygon cooling fans (FM18) is checked. An abnormal condition occurs with the FM18 EM signal a specified period of time after the FM18 turns ON. This abnormal condition recurs even a specified period of time after the FM18 is turned OFF and then turned ON, and an error detection signal (24V cut off/blowout of a fuse) is not detected.
• Causes: AC drive board (ACDB) Polygon cooling fan (FM18)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC42-19
• Description: The EM signal of the polygon cooling fan (FM18) is ON when the printing is started.
• Causes: Polygon cooling fan (FM18)
• Remedy: Error codes are not displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. The control of the main body is made by using a data previously obtained.

• Code: SC46-01
• Description: APC abnormality. While in the image write, the APC is not applicable for the correction of the sub scan beam. Due to the 12V DC power for the laser drive not supplied, the MPC being wrong and the laser defective, the laser does not light up. Also, due to the rotation of the polygon mirror unavailable, the displacement of the index sensor, and the index sensor being defective, the index sensor cannot detect the laser.
• Causes: Write unit Power connector of the image processing board (IPB)
• Remedy: If there is a copy being made, the main body completes the paper exit before stopping operations. Turn OFF the RL1 (main).

• Code: SC46-02
• Description: Scanner FIFO abnormality. FIFO address abnormality for the scanner. While in the image read, the compression of image data that is read in is not correctly terminated.
• Causes: Image processing board (IPB)
• Remedy: If there is a copy being made, the main body completes the paper exit before stopping operations. Turn OFF the RL1 (main).

• Code: SC46-03
• Description: FIFO address abnormality for the printer. While in the image write, the elongation processing of image data that is read in is not correctly terminated.
• Causes: Image processing board (IPB)
• Remedy: If there is a copy being made, the main body completes the paper exit before stopping operations. Turn OFF the RL1 (main).