Code :

Code: 543
Description: High temperature detection: Software [A] The thermistor detects 230°C for 0.2 seconds.
Causes: • Defective thermistor • Defective I/O board • Defective EGB
Remedy:

Code: 544
Description: High temperature detection: Hard [A] The thermistor detects 250°C.
Causes: • Defective thermistor • Defective I/O board • Defective EGB • Defective fusing unit, PSU, or EGB 1. Replace the fusing unit. 2. Replace the PSU.
Remedy:

Code: 545
Description: Heating lamp error [A] The fusing lamp is fullpowered for 8 seconds after the heating roller reaches the print ready temperature.
Causes: • Deformed thermistor • Thermistor coming off • Defective fusing lamp
Remedy:

Code: 547
Description: Zero cross error [D] 1. The zero cross signal is detected three times even though the heater relay is off when turning on the main power. 2. The zero cross signal is not detected for three seconds even though the heater relay is on after turning on the main power or closing the front door. 3. The detection error occurs twice or more in the ten zero cross signal detections. This error is defined when the detected zero cross signal is less than 17 for 200 ms.
Causes: • Defective fusing lamp relay • Defective fusing lamp relay circuit • Unstable power supply
Remedy: 1. Check the power supply source. 2. Replace the PSU.

Code: 557
Description: Zero cross frequency error [C] The detection error occurs ten times in a row in ten zero cross signal detections. This error is defined when the detected zero cross signal is more than 28 for 200 ms. This SC is only logged. In this case, the power frequency is defined as 60 Hz.
Causes: • Noise (High frequency)
Remedy: 1. Check the power supply source.

Code: 670
Description: Engine start-up error [D] The ready signal from the engine board is not detected.
Causes: • Defective engine board.
Remedy: 1. Replace the engine board.

Code: 687
Description: Controller board command error [D] A command from the controller board is not received.
Causes: • Loose connection • Defective controller board • Defective EGB
Remedy: 1. Check the connection of the controller board. 2. Replace the controller board. 3. Replace the EGB

Code: 690
Description: EGB data error [D] The data transfer in the EGB is interrupted by some incident (e.g. cover open etc.) during the data transfer.
Causes: • Defective EGB
Remedy: 1. Replace the EGB.