• Code: SC546
• Description: Unstable fusing temperature Definition: [A] Fusing temperature more than 60 °C: The fusing temperature does not rise 2°C or more within 6 seconds after the fusing lamp has been on. Fusing temperature 60 °C or less: The fusing temperature does not rise 2°C or more during a 6 second interval (the 6 s timer starts 14 s after the fusing lamp turned on).
• Causes: · Thermistor defective · Poor connection of the fusing unit · Power supply unit defective

• Code: SC547
• Description: Zero cross signal malfunction Definition: [A] Zero cross signals are not detected within a certain period.
• Causes: · Power supply board defective · Engine board defective

• Code: SC590
• Description: Fusing fan motor error Definition: [B] The CPU detects an exhaust fan lock signal for more than 3.5 seconds.
• Causes: · Poor connection of the exhaust fan motor · Too much load on the motor drive

• Code: SC610
• Description: Communication error between the engine board and duplex unit Definition: [B] The engine board cannot communicate with the duplex unit properly.
• Causes: · Poor connection for the interface cable for the duplex unit · Duplex control board defective · Engine board defective

• Code: SC692
• Description: Communication error between the engine board and the printer controller Definition: [B] The engine board cannot communicate with the printer controller properly.
• Causes: · Poor connection between the engine board and the printer controller board. · Printer controller defective · Engine board defective

• Code: SC722
• Description: Finisher jogger motor error Definition: [B] 1) The finisher jogger H.P sensor remains de-activated for a certain time when returning to home position. 2) The finisher jogger H.P sensor remains activated for a certain time when moving away from home position.
• Causes: · Jogger H.P sensor defective · Jogger motor defective

• Code: SC725
• Description: Finisher stack feed-out motor error Definition: [B] The stack feed-out belt H.P sensor is not activated within a certain period after the stack feed-out motor is turned on.
• Causes: · Stack feed-out H.P sensor defective · Stack feed-out motor defective

• Code: SC726
• Description: Finisher shift motor error Definition: [B] Tray shift is not detected within a certain period after the shift motor is turned on.
• Causes: · Shift motor defective · Shift tray half-turn sensor defective