Error code E315 means any of the following is true in the image processing by the main controller:
1. The image data has a fault.
2. The encoding/decoding operation for image data has a fault.
3. The image processing element of the main controller PCB has a fault.
The image data, the main controller or the HDD is faulty.
What to do:
If this error occurs during normal copying or printing, the job in question (image data) is cleared when the main power switch is turned off and then on again.
If this error occurs frequently, however, a fault on the main controller PCB is a possibility.
If this error occurs in a specific image within the Mail Box, damage in data may be assumed: be sure to delete the image from the Mail Box.