Akai VS-220EV Service Manual page 9

4-2. LOADING LEADER HEIGHT
ADJUSTMENT
1) Slightly loosen the set screws at the lower part of
the LOADING LEADER so that the LOADING
LEADER can be adjusted with reasonable tightness.
Adjust the coarse height of the LOADING LEADER
from the base mount as 0.6 to 0.8 mm.
2) Set the reference tape TF-530RFS (AT-751775) and
press the PLAY button.
3) Connect an Oscilloscope to RF ENVELOPE test
terminal TP1 on the MAIN (VIDEO) PCB.
Turn the LOADING LEADER height adjustment
screw head to obtain the flat envelope as Fig. 4-5
ideal envelope.
LOADING LEADER
ENVELOPE
HEIGT ADJUSTMENT
SCREW HEAD
0.6 to 0.8mm
SET SCREW ae
Fig 4-3 Fig. 4-4 MAIN (VIDEO) PCB.
LOADING
LOADING
LEADER (L)
LEADER (R)
Fig. 4-5
SERVICE MANUAL
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