NAD 5420 - Alignment Procedures (Continued); Focus Gain Adjustment; Tracking Gain Adjustment

Load the test disc and put the unit into the PLAY mode.
Adjust RV103 so that the tracking error waveform is symmetrical.
(See Fig 3)
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NOTE: BEFORE CONTINUING REFER TO PAGE 8 FOR GUIDANCE ON FOCUS AND
TRACKING GAIN ADJUSTMENT.
Focus gain adjustment
Switch the special jig to “OFF" and leave the scope connected.
Scope settings: Coupling - DC
Vertical sensitivity: 0.1V/div
Horizontal timebase : 2mS/div
Adjust RV105 so that the DC level is between 120 and 200mv.
Turn the power OFF,remove the jig and return the original socket to
Piti.
Tracking gain adjustment
Turn the power ON, load the test disc and press PLAY.
Connect the scope to pin 3 of P1111.
Scope setting: Coupling : DC
Vertical sensitivity: O.2v/div
Horizontal timebase : 2mS/div
Adjust RV104 so that the waveform is as shown in Fig 4(a).
FiG.. 4
"TO SCOPE
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