• Code: SC506
• Description: Paper tray motor lock (optional paper tray unit) Definition: [C] A motor lock signal is not detected for more than 1.5 s or the lock signal is not detected for more than 1.0 s during rotation.
• Causes: · Paper tray unit motor defective · Too much load on the drive mechanism

• Code: SC507
• Description: Tandem tray lift error (optional LCT) Definition: [C] The low limit sensor is not activated after the paper tray lift motor has been on to lower the tandem tray for 8 seconds.
• Causes: · Paper tray lift motor defective · Low limit sensor defective · Too much load on the drive mechanism

• Code: SC508
• Description: Rear fence drive error (optional LCT) Definition: [C] The return position sensor is not activated after the rear fence drive motor has been on to lower the tandem tray for 8 seconds.
• Causes: · Rear fence motor defective · Return position sensor defective · Too much load on the drive mechanism

• Code: SC509
• Description: Side fence drive error (optional LCT) Definition: [C] The side fence positioning sensor is not activated in 3 s when the paper stack in the left tray is moved to the right tray. The side fence close sensor is not activated in 3 s after moving the paper stack to the right tray.
• Causes: · Side fence motor defective · Side fence position sensor defective · Side fence close sensor defective · Too much load on the drive mechanism

• Code: SC541
• Description: Fusing temperature warm-up error Definition: [A] The fusing temperature detected by the thermistor was below 13 °C for 10 seconds
• Causes: · Fusing thermistor defective or out of position · Fusing lamp open · Fusing thermofuse open · Power supply board defective · Poor connection of the fusing unit

• Code: SC542
• Description: Fusing temperature warm-up error Definition: [A] The fusing temperature does not reach the fusing standby temperature within 40 seconds after the main switch is turned on.
• Causes: · Fusing thermistor defective or out of position · Fusing lamp open · Fusing thermofuse open · Power supply board defective · Poor connection of the fusing unit

• Code: SC543
• Description: Fusing overheat error Definition: [A] A fusing temperature of over 230°C is detected for 1 second by the fusing thermistor.
• Causes: · Fusing thermistor defective · Power supply board defective

• Code: SC544
• Description: Fusing low temperature error Definition: [A] A fusing temperature of lower 100°C is detected for 1 second by the fusing thermistor.
• Causes: · Fusing thermistor defective · Power supply board defective · Poor connection of the fusing unit