Akai VS-220EV Service Manual page 11

4-7. AUDIO HEAD HEIGHT ADJUSTMENT
1) Connect an oscilloscope or a AC Voltmeter to the
LINE AUDIO OUT.
2) Set the reference tape TF-530RFS (AT-751775) and
depress the PLAY button.
3) Slightly turn the NUT (@) shown in Fig. 4-9 to obtain
the maximum aduio output.
4-8. CONTROL HEAD POSITION
ADJUSTMENT
1) Connect an oscilloscope to RF ENVELOPE test
terminal TP1 on the MAIN (VIDEO) PC Board.
2) Set the reference tape TF-530RFS (AT-751775) and
depress the PLAY button.
3) Set the Tracking Control Volume to center click
position.
4) Adjust Mechanical Tracking Adjustment Screw (@) to
obtain the maximum RF ENVELOPE.
ENVELOPE
— A/C HEAD BLOCK
©-—- TAPE GUIDE
Fig. 4-14
MECHA ADJ
SCREW (@) BOF
SERVICE MANUAL
4-9. CUE REVIEW ADJUSTMENT
1) Set a E-180 tape, press the PLAY and the F.FWD
button (CUE mode).
2) Turn the CUE/REVIEW GUIDE height adjustment
Nut ©) so that the wrinkle between the PINCH
ROLLER and the CUE/REVIEW GUIDE are not
existed.
3) Depress the REV button (REVIEW mode) confirm
the curl at the tape down edge is not existed at the
TAPE GUIDE as shown in Fig. 4-7.
Fig. 4-7 (c) is not acceptable, but Fig. 4-7 (b) is
acceptable).
TAPE GUIDE
TAPE
CAPSTAN
WRINKLE
GOOD (VIEW FROM A) NO GOOD
Fig. 4-16
After the adjustments, tighten the LOADING LEADER
set screw.
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