• Code: 991.00
• Description: Service finisher error Sensor (booklet front tamper HP) late error
• Remedy: The sensing area of the sensor (booklet front tamper HP) is not interrupted within the specified time after the front booklet tamper starts moving to the home position.

• Code: 991.01
• Description: Service finisher error Sensor (booklet front tamper HP) lag error
• Remedy: The sensing area of the sensor (booklet front tamper HP) remains interrupted within the specified time after the front booklet tamper starts moving from the home position.

• Code: 991.02
• Description: Service finisher error Sensor (booklet rear tamper HP) late error
• Remedy: The sensing area of the sensor (booklet rear tamper HP) is not interrupted within the specified time after the rear booklet tamper starts moving to the home position.

• Code: 991.03
• Description: Service finisher error Sensor (booklet rear tamper HP) lag error
• Remedy: The sensing area of the sensor (booklet rear tamper HP) remains interrupted within the specified time after the rear booklet tamper starts moving from the home position.

• Code: 991.04
• Description: Service finisher error Sensor (booklet end guide HP) late error
• Remedy: The sensing area of the sensor (booklet end guide HP) is not interrupted within the specified time after the booklet end guide starts moving to the home position.

• Code: 991.05
• Description: Service finisher error Sensor (booklet end guide HP) lag error
• Remedy: The sensing area of the sensor (booklet end guide HP) remains interrupted within the specified time after the booklet end guide starts moving from the home position.

• Code: 991.06
• Description: Service finisher error Sensor (booklet unit interlock) error
• Remedy: The sensor (booklet unit interlock) detected that the booklet maker was not completely inserted when the finisher front door assembly was closed.

• Code: 991.07
• Description: Service finisher error Sensor (booklet compiler no media) no media detected
• Remedy: The sensing area of the sensor (booklet compiler no media) did not detect any media when the booklet stapler motor was activated.