• Code: 641
• Description: BCU – Controller communication error (no response)
• Causes: Turn the main switch off and on. Check the connection between BCU and controller. Replace the controller. Replace the BCU.

• Code: 670
• Description: No response from BCU at power on
• Causes: • Loose connection • Defective controller • Defective BCU

• Code: 680
• Description: EEPROM error The main switch is turned on.- EEPROM is not connected.
• Causes: • Incorrect EEPROM connection

• Code: 687
• Description: PER command error . Some image data is transferred. - The controller does not report the necessary memory address. . The PES command is issued. - The controller does not issue the necessary memory report (PER) command within 6 seconds.
• Causes: • Poor connection between BCU and controller • Defective BCU • Defective controller

• Code: 730
• Description: Four-bin mail box communication error • A connection error occurs. • The UART reports a communication error. • In other cases than paper transport, after an every-3- second command is sent, the mail box does not respond within 5 seconds.
• Causes: • Defective mail box control board • Defective BCU • Defective IOB • Incorrect installation

• Code: 740
• Description: Finisher communication error • A connection error occurs. • The UART reports a communication error. • In other cases than paper transport, after an every-3- second command is sent, the finisher does not respond within 5 seconds.
• Causes: • Defective finisher control board • Defective board • Defective BCU • Defective IOB • Incorrect installation

• Code: 741
• Description: Finisher jogger motor error The jogger home position sensor (on/off) is not detected in a given time.
• Causes: • Defective jogger motor • Defective jogger home position sensor

• Code: 742
• Description: Finisher stapler unit error • The stapler does not return to home position within 1 second.
• Causes: • Defective stapler unit