XEROR 7760 KEEPS REBOOTING DOESN'T COMPLETE WARMUP AT POWER ON

[colorprinters]

At power on the 7760 comes on,the xerox logo moves across display
you hear some ticking noises,the fuser rotates momentarly,warming
up shows in the display......then you hear ticking noises from back of the printer,and the printer cycles power,repeting the steps above,over and over.

I went in to diagnostics menu,tried to run internal reports and
could not run them.

so I replaced the image processor bd and hard drive..same problem

 

[UniversalToner]

You might have to replace the engine control board.