There is a shutter error.
While the shutter is in operation, the sensor signal is not detected and, in addition, it is still not detected after 3 retries. Remedy
- Check the connection of the connector of the shutter motor and the shutter HP sensor. - check the mounting of the pin used to match the shutter gear phase of the fixing unit (See descriptions under "Points to Note When Mounting the Fixing Roller.") - Replace the shutter HP sensor and the shutter motor