Samsung VP-D455 Service Manual page 28

Alignment and Adjustments
3-4-5(d) Check After Adjustment
1) Tracking Check
ΠPlayback the alignment tape.
´ Confirm that the minimum amplitude value(E min.)is 80% of the maximum value(E max.) or larger.
(Fig. 3-25)
ˇ Confirm that no large fluctuation occur on the waveform. (Fig. 3-26)
Fig. 3-25
2) CUE and REV Check
ΠPlayback the alignment tape, and set to REV mode.
Confirm that the waveform peaks have a uniform Pitch. (Fig. 3-27 A)
If the track pitch is not uniform, do section 3-4-5(b) (Tracking adjustment) and 3-4-5(c) (P8 adjustment).
´ Set to CUE mode.
Confirm that the waveform peaks still have a uniform pitch. (Fig. 3-27 B)
If the track pitch is not uniform, do section 3-4-5(b) (Tracking Adjustment).
3-18
Emin Emax
Emin
80(%)
Emax
a b c
a b c
a b c
Fig. 3-27
C
A
C
1
A
C
8
Fig. 3-26
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