Description: Fuser unit related service call Thermistor or heater abnormality at power-ON: Abnormality of service call the thermistor is detected when power is turned ON or the temperature of the fuser roller does not rise in a specified period of time after power is turned ON.Check if the harness connected to the connector J451 on the EPU board has any abnormality. Check if the process unit is properly installed, and check if the connector pins that are connected to the equipment are disconnected or have any abnormality such as deformation. If it is a new one, check the following: 2. Remedy: Process unit EPU memory board 1.Description: Process related service call EPU board memory old parts detection error: The EPU board cannot detect the new process unit when the equipment is started in the EPU replacement mode ( + ).If the process unit has not been replaced, check the following. If the process unit has been replaced with a new one before the equipment is started, turn the power OFF and then back ON in the EPU replacement mode ( + ). Description: Process related service call EPU board memory new parts detection error: The EPU board detects the process unit as a new unit when the equipment is started in the normal mode.
EPU memory board Check if the harness connected to the connector J451 on the EPU board has any abnormality. Remedy: Process unit Check if the process unit is properly installed, and check if the connector pins that are connected to the equipment are disconnected or have any abnormality such as deformation.Description: Process related service call EPU board memory overwriting error: The overwriting of the EPU board memory fails.Check if the 24V output and the grounding wire are normal.
2 SLG board Check if the conductor pattern on the SLG board is short circuited or open circuited. Remedy: 1 Switching regulator Check if any fuse in the scanning system is blown out.
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