Hi. I have 2 same machines WC7655.

One is working, the second one will not boot up (it starts, but when it should raise the tray and scanner, nothing happens - ist stays so forever.

The bad is: the good machine is old - 500.000, the bad machine seems to be NEW, as it newer would do a print.

I have made all the RAPs in the manual, found nothing.

The only difference is:

1. (PIC1)
GOOD MACHINE - the red led on the left board comes on on start for 3 seconds an then it turns off,
BAD MACHINE - the red led stays on

2. (PIC2)
GOOD MACHINE - The 2 red leds are flashing and (left - right -left - right and so on..
BAD MACHINE - both leds are on all the time.

What could it be?? Which parts should i try to change form the good to the bad, and which i should not?

pic1.JPG pic2.JPG