Originally Posted by
Pitre
OK,
it means the initial diagnosis sequence is not getting performed. that's why the controller remains in the ' HUNG ' state.
you mentioned earlier that the machine went off while in running condition, it means that the power supply is supposed to be in suspect.
" Control Pins " means what exactly you meant to say......can you take a picture of the same where you found the anomaly...? the power supply is supposed to give output in +5 , +12 , -12 v etc.
did you get the desired voltage at the output of each PS output point...? with reference to the Electric schematic....?
second suspect is the DPR card.....which checks the functioning of Servo system......while booting....!
let me have the exact Ckt. Diagram for your machine and the picture of power supply...
thanks.