• Code: AF
• Description: CIS positioning error
• Remedy: • CIS unit • CIS flat cable • Driver PCB •Main PCB

• Code: B1
• Description: Dark level offset data level error for scanning.
• Remedy: • CIS unit •Main PCB

• Code: B2
• Description: Gain control data level error for scanning.
• Remedy: • CIS unit •Main PCB

• Code: B3
• Description: Scan area left edge detection error.
• Remedy: • CIS unit •Main PCB • Black markings on the white-level reference film inside the scanner top cover

• Code: B4
• Description: Scan area right edge detection error.
• Remedy: • CIS unit •Main PCB • Black markings on the white-level reference film inside the scanner top cover

• Code: B5
• Description: Horizontal scanning edge reduction detection error in scanning area setting
• Remedy:

• Code: B6
• Description: Horizontal scanning edge enlargement detection error in scanning area setting
• Remedy:

• Code: B7
• Description: A/D converter reference voltage error (at High level).
• Remedy: • Main PCB