Sony RDR-VX521 - Program Dubbing from DVD to VHS

6-3
6-1-2 Head Switching Point Adjustment
1) Playback the alignment tape.
2) Intermittently short-circuit the two Test Points on Function Timer PCB while setting the adjustment mode. (See Fig. 6-2)
3) Press the “1, 0” buttons ; remote control adjustment operates automatically. (See Fig. 6-1)