NAD 512 Service Manual page 10

Step A: PLL Adjustment
Step B: RF Adjustment
(1) Load the test disc and set the unit into PLAY mode.
(2) Connect the scope to P109 (RF) and P107 (GND).
Scope setting:
Coupling
: AC.
Vertical sensitivity : 0.2 V/div.
Horizontal time base : 0.5 uS/div.
(3) Adjust RV102 so that the 3T component of the waveform is maximum and the
eye pattern is
at its best shape (see Fig. 2).
FIG. 1
O
TO SCOPE