• Code: 1551
• Description: Paper Thickness Sensor error
• Causes: 1. During detection of paper thickness, the thickness cannot be determined because the sensor is not stable due to vibration or the like. 2. The Paper Thickness Sensor is damaged and cannot detect the paper thickness correctly.
• Remedy: Replace the Paper Thickness Sensor.

• Code: 155A
• Description: DCP Motor overload error
• Causes: The electric current flowing when driving the motor is irregularly large. • Decompression Pump cable is damaged. • Irregular load • Decompression Pump encoder failure • Decompression Pump failure
• Remedy: Replace the Decompression Pump.

• Code: 155B
• Description: DCP Motor over speed error
• Causes: Detects that it is being driven at an irregularly faster speed than the specified value just before stopping. • Irregular load • Decompression Pump encoder failure • SUB Board is damaged. • Decompression Pump driver failure
• Remedy: 1. Replace the Decompression Pump. 2. Replace the SUB-B Board. 3. Replace the Main Board.

• Code: 155C
• Description: DCP Motor reversing error
• Causes: Detects accumulatively more than the specified number of times that it is being driven in the opposite direction to the specified driving direction. • The polarity of Decompression Pump Assy cable is opposite. • Decompression Pump Assy encoder failure
• Remedy: Replace the Decompression Pump.

• Code: 155D
• Description: DCP Motor driving time-out error
• Causes: Detects that the driving period is irregularly long. • Irregular load • Firmware becomes out of control.
• Remedy: Replace the Main Board.

• Code: 155E
• Description: DCP Motor velocity deviation error
• Causes: Detects, when accelerating/decelerating the motor, that it is being driven at an irregularly faster speed than the specified value. • Irregular load • Decompression Pump Assy encoder failure • Decompression Pump failure • SUB Board is damaged. • Decompression Pump driver failure
• Remedy: 1. Replace the Decompression Pump. 2. Replace the SUB-B Board. 3. Replace the Main Board.

• Code: 155F
• Description: DCP Motor lock error
• Causes: 1. Connection failure of the Decompression Pump Assy. 2. Detects that it is being driven at an irregularly slower speed than the specified value. • Irregular load • Decompression Pump Assy encoder failure • Decompression Pump failure
• Remedy: Replace the Decompression Pump.

• Code: 1561
• Description: Paper thickness at power-on error
• Causes: At power-on, the paper thickness sensor detects more than 2.2 mm paper thickness.
• Remedy: Replace the Paper Thickness Sensor.