Error code 56 and it was diagnosed as a bad LPU cable.
I received the cable Friday and today started on a 18 page
process to remove the LPU and replace it’s cable.
The document was clear and contained many helpful pictures
( 1-2 per page ). The result was success. My form3 is printing.
I have only one complaint., the instructions said 20-30 min. For
me it was more like 90-120 min.