• Code: SC541
• Description: Fusing Unit Thermistor Error (Fatal Error) (C7)
• Causes: No temperature was detected within 5 sec. after the machine was turned on (temperature was less than 0°C).
• Remedy: • Check the Fusing unit thermistor if it’s disconnected, broken or not set correctly • Check the Fusing lamp if it’s disconnected, broken or not set correctly • Replace Fusing unit

• Code: SC542
• Description: Fusing Reload Temperature Error (Fatal Error) (C8)
• Causes: After starting up or during operation the machine detected after 5 readings at 1.5 sec. intervals that the hot roller was 5°C below the reload (operating) temperature. • Unstable input voltage • Fusing thermistor deformed or out of position • Fusing lamp harness loose, broken, defective • Fusing lamp defective • Fusing unit defective
• Remedy: • Use high quality power source • Check the Fusing thermistor position and it’s harness connection • Check the Fusing lamp and it’s harness connection • Replace Fusing unit

• Code: SC543
• Description: High Temperature Error - Software (Fatal Error) (C9)
• Causes: The temperature inside the fusing unit exceeded 225°C (437°F) for more than 1 sec. • After this error has occurred three times, the machine will shut down and must be released with the Smart Organizing Monitor and serviced by a service technician. • Main board defective • PSU defective (TRIAC short)
• Remedy: • Check all PCB harness connection • Check or replace PSU • Replace Main board

• Code: SC544
• Description: High Temperature Error- Hardware (Fatal Error) (c1)
• Causes: The machine detected the CPU port LOW twice at 100 ms intervals and issued this SC. This check is always done to check for overheating, even if SC543 does not detect the problem.
• Remedy: • Check or replace Fusing unit • Check or replace PSU • Replace Main board

• Code: SC545
• Description: Fusing Lamp Remains ON Error (Fatal Error) (c2)
• Causes: The heating element of the fusing lamp remained at full power longer than 9 sec. after the reload temperature was detected. • Fusing thermistor harness connector loose, broken, defective • Fusing thermistor warped or positioned incorrectly • Fusing lamp harness connector loose, broken, defective
• Remedy: • Check Fusing thermistor position and it’s harness connection • Check Fusing lamp and it’s harness connection

• Code: SC547
• Description: Zero cross Error (r2)
• Causes: Power supply frequency is unstable. HVP or PSU failure.
• Remedy: • Reset by turning the power OFF/ON. • Use high quality power supply. • Replace the HVP or PSU.

• Code: SC551
• Description: Edge thermistor error (Fatal Error) (r1)
• Causes: In the condition of relay ON, the end thermistor on the fusing detects less than 0 degrees Celsius for more than 5 seconds.
• Remedy: • Check Fusing thermistor position and it’s harness connection • Check Fusing lamp and it’s harness connection • Replace Fusing unit

• Code: SC556
• Description: Temperature deviation error (Fatal Error)
• Causes: More than 1 degree Celsius temperature difference (between Center – End thermistor) is detected for 1.5 seconds 5 times in a row.
• Remedy: • Check Fusing thermistor position and it’s harness connection • Check the input voltage if it’s out of the limit • Replace Fusing unit