Do you have the manual or not? There is a specific sequence to follow to extract the codes- just because all lights blink does not give any insight into the actual code. There is no error code where all 5 blink.
i have the manual i ran the auto diag and the machine would stop 2/3rd thru the diag and and lock up. unplugged it accessed the faul codes and it would only display the 5 lights off and on just like before you select auto or manual or calibration. it will not give any fault cods