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Code :

Code: 542-003
Description: Fusing temperature warm-up error 3: Center themistor The center thermistor that touches the hot roller determined that the hot roller failed to reach 100 within the prescribed time.
Causes: • Fusing lamp disconnected • Thermistor warped, out of position • Thermostat has opened

Code: 543
Description: Fusing lamp overheat error 1 (software) Central thermistor detected a temperature of 240°C at the center of the hot roller. Fusing temperature control software error
Causes: • PSU defective • IOB defective • BICU defective

Code: 544
Description: Fusing lamp overheat error 1: Hardware The center thermistor or an end thermistor detected a temperature of 250°C on the hot roller.
Causes: • PSU defective • IOB defective • BICU defective

Code: 545
Description: Fusing lamp overheat error 2: Center lamp After hot roller reaches warm-up temperature, the fusing lamps remained on at full capacity for 11 samplings (1.8 s. duration) while the hot roller was not rotating.
Causes: • Thermistor damaged, or out of position • Fusing lamp disconnected

Code: 547-01
Description: Zero cross signal error 1: Fusing relay At power on and with the fusing relay off, 3 samplings detected that the zero cross was not normal.
Causes: • Fusing relay short • Fusing relay drive circuit defective

Code: 547-02
Description: Zero cross signal error 2: Fusing relay No zero cross signal was detected within 3 sec. after power on or after closing the front door.
Causes: • Fusing relay short • Fusing relay drive circuit defective

Code: 547-03
Description: Zero cross signal error 2: Unstable power supply After 11 samplings the power supply was not within 50 to 60 Hz, indicating that the power supply is not stable.
Causes: • Check power source with local supplier

Code: 551
Description: Fusing thermistor error 1: End thermistor The end thermistor (contact type) was less than 0C (32F) for more than 7 seconds.
Causes: • Thermistor connector loose, broken, defective • Thermistor incorrectly installed or loose

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