• Code: 552-01
• Description: Fusing reload temperature error 1: End thermistor The end thermistor (contact type) could not detect: • 100°C 25 seconds after the start of the warm-up cycle. • A change in temperature more than 16 degrees for 5 seconds. • The reload temperature with 56 seconds after the start of the fusing temperature control cycle.
• Causes: • Fusing lamp disconnected • Thermistor connector loose, broken, defective • Thermistor out of position, installed incorrectly • Thermostat open

• Code: 552-02
• Description: Fusing reload temperature error 2: End thermistor The hot roller did not reach 100C within the prescribed time.
• Causes: • Fusing lamp disconnected • Thermistor connector loose, broken, defective • Thermistor out of position, installed incorrectly • Thermostat open

• Code: 552-03
• Description: Fusing reload temperature error 3: End thermistor The hot roller did not reach the prescribed temperature within 3 sec, after the start of the fusing temperature control cycle.
• Causes: • Fusing lamp disconnected • Thermistor connector loose, broken, defective • Thermistor out of position, installed incorrectly • Thermostat open

• Code: 553
• Description: Fusing thermistor error 4: End thermistor (software) The end thermistor (contact type) was at 240°C (464°F) for more than 1 second. The temperature is read 10 times every second. (at 0.1 s intervals).
• Causes: • PSU defective • IOB control board defective • BICU control board defective

• Code: 555
• Description: Fusing lamp error After the start of the warmup cycle, a fusing lamp was at full power for 1.8 s but the hot roller did not turn.
• Causes: • Thermistor bent, out of position • Fusing lamp disconnected • Circuit breaker opened

• Code: 557
• Description: Zero cross signal error High frequency noise was detected on the powe r line.
• Causes: • No action required. The SC code is logged and the operation of the machine is not affected.

• Code: 559
• Description: Fusing jam: 3 counts At the fusing exit sensor the paper was detected late for three pulse counts (lag error), and SP1159 was on.
• Causes: • If this SC occurs, the machine cannot be used until the service technician cancels the SC code. • This SC occurs only if SP1159 has been set to "1" (On). (Default: 0 (Off)).

• Code: 569
• Description: Fusing pressure release motor error During copying, the HP sensor could not detect the actuator, tried again 3 times and could not detect.
• Causes: • Motor lock because of too much load • Motor driver defective • HP sensor defective, disconnected, connector defective, harness damaged