Sony EVO-720P - Entrance Side Adjustment - +304

7-43, Entrance Side Adjustment
1)
2)
Play back the alignment tape (WRS5-iC) for
tracking.and foosen No.2 guide Jock screw @, and
rotate No.2 and No.3 guides counterclockwise lo
free tape running on the entrance side (See Fig,
7-67.)
Note: Since the space between the lop and
bottom flanges of No.2 guide is narrow,
confirm that the tape is touching neither
lop nor bottom flanges at this point, Nole
that if No,2 guide is loosened too much,
the lape touches the bottom flange and
the RF waveform on the entrance side
exceeds the original {ree waveform,
Confirm that the RF waveform on the entrance
side has 0.5 to 3.5 peaks in this condition, If not,
adjust as follows, (See Fig, 7-68.)
<Jess than 3.5 peak>
Adjust the height adjustment’ screw of No.1 guide
(tension regulator arm assembly) by turning it clock-
wise 90° at atime. (See Fig. 7-69.)
<more than 6 peaks>
Adjust the height adjustment screw of No.1 guide
(tension regulator arm assembly) by turning it
counterclockwise 90° at a time: (See Fig. 7-69.)
No2 quide No.3 guide
No.1 guide
(Tension regulator
arm assembly)
height adjustment screw
Fig. 7-69.
3) Slowly rotate the No.2 guide clockwise to make
the ‘entrance side waveform approximately flat,
(Fig. 7-70.)
Note: Do not rotate No.2 guide excessively,
4) Set the SEL switch of the track shift jig to ON,
then turn the track shift knob until the RF
waveform amplitude becomes 2/3, (See Fig, 7-
71.)
4g Make it approximately flat
70-~B0%
Fig. 7-67.
feces
=
Fig,
7-70.
0.6 — 3.5 peaks
PN
et
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Po
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B/3 A) A
Fig.
7-68.
Fig.
7-71