• Code: SC18-41
• Description: When the upper limit sensor /2 (PS77) is OFF, the PS77 does not turn ON within 20 seconds after the paper lift motor /2 (M43) turns ON for lifting operation. And at this time, an error detection signal (24V cut off) is detected.
• Causes: DC power supply /2 (DCPS/ 2)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 4" is displayed on the operation board.

• Code: SC18-42
• Description: When the upper limit sensor /2 (PS77) is OFF, the PS77 does not turn ON within 20 seconds after the paper lift motor /2 (M43) turns ON for lifting operation. And at this time, an error detection signal (blowout of a fuse) is detected.
• Causes: PF drive board (PFUDB)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 4" is displayed on the operation board.

• Code: SC18-43
• Description: When the upper limit sensor /2 (PS77) is OFF, the PS77 does not turn ON within 20 seconds after the paper lift motor /2 (M43) turns ON for lifting operation. And at this time, an error detection signal is not detected.
• Causes: Paper lift motor /2 (M43)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 4" is displayed on the operation board.

• Code: SC18-50
• Description: The locking of the paper lift motor /3 (M44) is detected. When the M44 is ON, an error detection signal of the M44 is detected.
• Causes: Paper lift motor /3 (M44) Upper limit sensor /3 (PS83)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).

• Code: SC18-51
• Description: When the upper limit sensor /3 (PS83) is OFF, the PS83 does not turn ON within 20 seconds after the paper lift motor /3 (M44) turns ON for lifting operation. And at this time, an error detection signal (24V cut off) is detected.
• Causes: DC power supply /2 (DCPS/ 2)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 5" is displayed on the operation board.

• Code: SC18-52
• Description: When the upper limit sensor /3 (PS83) is OFF, the PS83 does not turn ON within 20 seconds after the paper lift motor /3 (M44) turns ON for lifting operation. And at this time, an error detection signal (blowout of a fuse) is detected.
• Causes: PF drive board (PFUDB)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 5" is displayed on the operation board.

• Code: SC18-53
• Description: When the upper limit sensor /3 (PS83) is OFF, the PS83 does not turn ON within 20 seconds after the paper lift motor /3 (M44) turns ON for lifting operation. And at this time, an error detection signal is not detected.
• Causes: Paper lift motor /3 (M44)
• Remedy: No error code is displayed on the operation board, but displayed only on the data collection, the list output and the CSRC. Since the lifting operation of the tray is not completed, "Set paper in the tray 5" is displayed on the operation board.

• Code: SC21-01
• Description: It is checked that the time for the charger cleaning motor (M23) operations is over. • When the charger cleaning home sensor (PS26) is OFF with the main power switch (SW1) ON, the PS26 does not turn ON within 35 seconds after the M23 turns ON for home position research operation (return operation). At this time, an error detection signal (blowout of a fuse) is not detected. • The PS26 does not turn OFF within 15 seconds after the reverse operation (return operation) is started. At this time, an error detection signal (blowout of a fuse) is not detected. • The charger cleaning limit sensor (PS27) does not turn ON within a specified period of time after the reverse operation (return operation) is started for detection of PS26 being OFF. Or, the PS26 does not turn ON within a specified period of time after the PS27 turns ON. At this time, an error detection signal (blowout of a fuse) is not detected.
• Causes: Charger cleaning motor (M23) Charger cleaning home sensor (PS26) Printer control board (PRCB)
• Remedy: The main body stops immediately to turn OFF the RL1 (main).