Digital...............?? How do you do that?
Quick description........ rotate the lens all the way out........ remove top cover.............. looking down at the top, remove the thin exposure lamp cover on top of the rangefinder......... note the screw on the front left and right rear of the RF assy....... remove them and tilt the RF assy up beginning with the end near the rewind crank.
When replacing the RF assy reassemble in reverse order. Make sure the focus arm from the lens matches the RF cam on the front.
I assumed the lens scale was accurate and adjusted the focus at 6ft. Its a little bit off at 2.8ft and infinity (2-3 degrees)... well within the users focusing skill....... not enough to make much difference.