Causes: The fuser full heater remained ON at full capacity for more than 9 s after the fusing temperature attains reload temperature.
Remedy: • Deformed thermistor • Thermistor not in the correct position • Defective fusing lamp 1. Replace the fusing unit. 2. Replace the fusing lamp. • Execute "Fuser SC Reset" to recover the machine after completing the recovery procedure. Otherwise, the machine continues to issue this SC code and cannot be operated.
Code: 547
Description: Zero cross error
Causes: • The zero cross signal is detected three times even though the fusing lamp relay is off when turning on the main power. • The zero cross signal is not detected for 3 seconds even though the fusing lamp relay is on after turning on the main power or closing the front door. • The detection error occurs twice or more in 11 zero cross signal detections. This error is defined when the detected zero cross signal is less than 45. • The zero cross signal is not detected three times while the main power remains ON.
Remedy: • Defective fusing relay • Defective fusing relay circuit • Shorted +24V fuse on the PSU • Unstable power supply. 1. Check the power supply source. 2. Replace the +24V fuse on the PSU. 3. Replace the PSU
Code: 559
Description: Fuser 3times jam error
Causes: The paper jam counter for the fusing unit reaches 3. The paper jam counter is cleared if the paper is fed correctly. This SC is activated only when this function is enabled with "Engine Maintenance" (default "OFF").
Remedy: • Defective fusing unit • Defective fusing control 1. Clear this SC to send a command after a jam removal. 2. Turn off this function after a jam removal. • Execute "Fuser SC Reset" to recover the machine after completing the recovery procedure. Otherwise, the machine continues to issue this SC code and cannot be operated.
Code: 669
Description: EEPROM communication error
Causes: An unexpected value exists in the initialization flag of the EEPROM
Remedy: • EEPROM not connected • Defective EEPROM 1. Installing the EEPROM. 2. Replacing the EEPROM.
Code: 820
Description: Scan lock error
Causes: By an unexpected reason, the controller error occurred.
Remedy: Turn the machine's main power off, and then on.