Code: 71

• Description:Polygon motor does not synchronize with the reference clock.

Code: 72

• Description:Cannot detect Beam Detect signal.

Code: 73

• Description:No toner cartridge loaded.

Code: 74

• Description:Toner empty.

Code: 75

• Description:In-casing temperature error.

Code: 76

• Description:Heater harness disconnected or broken.

Code: 77

• Description:Heater thermistor short circuit

Code: 78

• Description:Heater thermistor harness disconnected or broken.