• Code: 552
• Description: Fusing reload failed (rear) (D160/D161/D170)
  NOT reaching the reload temperature in 20 ms after starting fusing lamp control.
• Causes: • Defective thermistor • Disconnection of fusing lamp

• Code: 552-01
• Description: Fusing temperature warm-up error (rear) (D158/D159)
  The fusing temperature rises less than 4 degrees in 2 seconds, and this continues 5 times consecutively.
• Causes: • Fusing thermistor defective or out of position • Power supply board

• Code: 552-03
• Description: Fusing temperature warm-up error (rear) (D158/D159)
  The fusing temperature does not reach the target with in 28 seconds after the fusing lamp controller is activated.
• Causes: • Broken fusing lamp cables

• Code: 553
• Description: Fusing overheat error (rear)
  The fusing temperature is over 230°C for 1 second (detected by the thermistor).
• Causes: • Fusing thermistor • Power supply board

• Code: 554
• Description: Heating roller fusing lamp overheat 2 (hardware error) (D158/D159)
• Causes: • The triac has shorted out. • Defective BICU • Defective fusing control system

• Code: 555
• Description: Fusing lamp overheat error (rear)
  After the fusing temperature reaches the target temperature, the fusing lamp does not turn off for 20 consecutive seconds.
• Causes: Fusing thermistor defective or out of position • Power supply board

• Code: 557
• Description: Zero cross frequency error (D158/D159)
  The detection error occurs 10 times or more in 11 frequency detections. This error is defined when the detected zero cross signal is more than 66.
• Causes: • Caused by noise

• Code: 559
• Description: Jam error detected 3 times in succession
  The exit sensor and the duplex sensor detect a paper jam 3 times in succession This condition can occur when SP1-159-001 is set to ‘on’. The default is ‘off’.
• Causes: • Paper jams can occur for the following reasons. • Dampness • Paper curl • Incorrect paper setting in the paper tray • Stripper pawls coming apart