Code :

Code: 547-02
Description: Zero cross error: fusing lamp relay contact defective
The zero cross signal is detected three times even though the heater relay is off when turning on the main power. The zero cross signal is not detected for 2 seconds even though the heater 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 number of zero cross signals is less than 45.
Causes: Defective fusing lamp relay (open contact). Defective fusing lamp relay circuit.
Remedy: 1. Turn off and on the main power switch. 2. Replace the PSU if the fusing lamp relay is defective. 3. Check the connection of the PSU to controller board and replace the harness or controller board if necessary. 4. Replace the fuse if the PSU fuse (24 VS) is welded.

Code: 547-03
Description: Zero cross error: low frequencies error
The zero cross signal is detected three times even though the heater relay is off when turning on the main power. The zero cross signal is not detected for 2 seconds even though the heater relay is on after turning on the main power or closing the front door. The detection error occurs twice or more in the 11 zero cross signal detections. This error is defined when the detected number of zero cross signals is less than 45.
Causes: Unstable frequencies from utility power line. Defective fusing lamp relay circuit. Unstable power supply.
Remedy: 1. Turn off and on the main power switch. 2. Check the utility power line. 3. Check the connection of the PSU to controller board and replace the harness or controller board if necessary.

Code: 551
Description: Heating roller thermistor error
The temperature at the end of the heating roller measured by the heating roller thermistor does not exceed -11°C or -41°C for the prescribed time.
Causes: Broken thermopile or thermistor. Defective connectors.
Remedy: 1. Check that the heating roller thermistor is firmly connected. 2. Replace the thermopile or thermistor.

Code: 552-03
Description: Heating roller warm-up error (sensor 2)
The heating roller temperature does not reach 80ўXC within the prescribed time. The center temperature of the heating roller does not reach the target reload permit temperature within the prescribed time. The center temperature of the heating roller does not reach the target reload permit pressure within the prescribed time.
Causes: Dirty thermopile lenses. Defective heating roller thermistor. Input voltage out of the warranty (out of specification).
Remedy: 1. Check and clean the thermopile lenses. 2. Replace the thermopile 3. Replace the thermistor.

Code: 554
Description: Heating roller fusing lamp overheat (hardware error)
The temperature detected by the heating roller thermistor reaches the prescribed temperature.
Causes: Defective BICU. Defective fusing control system
Remedy: 1. Replace the BICU.

Code: 557
Description: Zero cross frequency error
When the zero cross signal is 66 or more and it is detected 10 times or more in 11 detections, the machine determines that input 60 Hz and this SC occurs.
Causes: Noise (High frequency). Defective PSU.
Remedy: 1. Check the power supply source. 2. Replace the PSU.

Code: 559
Description: Consecutive fusing jam
The paper jam counter for the fusing unit reaches three consecutive times (the fusing exit sensor does not detect the paper).
Causes: Paper jam in the fusing unit.
Remedy: Remove the paper that is jammed in the fusing unit. Then make sure that the fusing unit is clean and has no obstacles in the paper feed path.

Code: 561
Description: Pressure roller thermistor error: Center
The temperature detected by the pressure roller thermistor does not reach 0 °C within the prescribed time.
Causes: Loose connection of the pressure roller thermistor. Defective thermopile. Defective pressure roller thermistor
Remedy: 1. Check if the pressure roller thermistor is firmly connected. 2. Replace the thermopile. 3. Replace the pressure roller thermistor.