• Code: 220 X05
• Description: Duplex belt rear sensor paper end exiting delay The trailing edge of the paper sheet does not pass the duplex belt rear sensor (sensor detecting the presence of paper) within the specified interval based on the belt encoder pulse count.

• Code: 221 X05
• Description: Switchback sensor paper leading edge arrival delay (in paper vacuum positioning operation) The leading edge of the paper sheet does not reach the switchback sensor (sensor does not detect the presence of paper) within the specified interval based on the belt encoder pulse count.

• Code: 222 X06
• Description: Switchback sensor paper end exiting delay (in paper vacuum positioning operation) The trailing edge of the paper sheet does not pass the switchback sensor (sensor detecting the presence of paper) within the specified interval based on the belt encoder pulse count.

• Code: 223 X02
• Description: Paper lift detection The paper emerge detection sensor at the transfer belt entrance section detected paper during printing.

• Code: 224 X02
• Description: Jammed paper at top edge sensor section when the cover is closed The top edge sensor detects the presence of paper when the cover is closed or during the interval in which the paper transport roller idling is controlled when the cover is closed.

• Code: 225 X04
• Description: Jammed paper at flipper sensor section when the cover is closed The flipper sensor detects paper when the cover is closed or during the interval in which the paper transport roller idling is controlled when the cover is closed.

• Code: 226 X04
• Description: Jammed paper at duplex belt front sensor section when the cover is closed The duplex belt front sensor detects paper when the cover is closed or during the interval in which the paper transport roller idling is controlled when the cover is closed.

• Code: 227 X05
• Description: Jammed paper at duplex belt rear sensor section when the cover is closed The duplex belt rear sensor detects paper when the cover is closed or during the interval in which the paper transport roller idling is controlled when the cover is closed.