Error code SC315 means "Potential Sensor Calibration Error 5".
Solution 1 (for errors SC312, SC313, SC314, SC315):
- If the drum unit is not correctly installed, SC312, SC313, SC314 or SC315 will occur.
- Install or replace it correctly
- Try to turn the main switch off and on.
- Check the wires.
- Potential sensor is bad
- Potential sensor connector is bad or disconnected
- Potential sensor wires are disconnected
- Development power pack is bad
- IOB is bad
- OPC connector is bad