This is an error related to the Hard Disk Drive, either the connections are bad or the Hard Disk Drive or the Main PCA are defective.
Try the following:
1. Unplug the Printer, remove the HDD cover and check that the two cables (a flat one and the power cable) are connected. Also check that the flat cable connector is clipped in correctly. If the problem persists, replace the Hard Disk Drive.
2. If the problem continues, check that the Green and Orange LED’s on the Main PCA are ON. If they are not ON, probably the PWS or its connections are defective. If the two LED’s are ON and the error continues, replace the Main PCA.