• Code: E747
• Description: The image processing ASIC or the memory control/communication ASIC is faulty.
  IC1010 (for image processing ASIC) on the main controller PCB or IC1012 (memory control/communication control ASIC, CPU) has a fault (e.g., image data transfer error).

• Code: E804-0000
• Description: The power supply cooling fan is faulty.
  The DC controller tried to start it up, but the fan has been identified as being at rest for 5 sec continuously.

• Code: E804-0004
• Description: The controller fan is faulty.
  The controller fan has been identified as being at rest.

• Code: E805-0000
• Description: The fixing heat discharge fan is faulty.
  The DC controller tried to start it up, but the fan has been identified as being at rest for 5 sec continuously.

• Code: E805-0001
• Description: The cleaner fan is faulty.
  The DC controller tried to start it, but the fan has been identified as being at rest for 5 sec continuously.