MX-J570V/MX-J680V
1-31
1.Playback the test tape TMT7036(10kHz).
2.With the playback mechanism or recording
playback mechanism, adjust the head azimuth
screw so that the forward and reverse output
levels become maximum.After adjustment,lock
the head azimuth at least by half a turn.
3.In either case,this adjustment should be
performed in both the forward and reverse
directions with the head azimuth screw.
<Constant speed>
Adjust VR301 so that the frequency counter reading
becomes 3,000Hz
60Hz when playing back the
test tape VTT712(3kHz)with the playback mechanism
or playback and recording mechanism after ending
forward winding of the tape.
Confirmation
of head angle
Confirmation
of tape speed
Test tape
:TMT7036(10kHz)
Measurement
output terminal
:Speaker terminal
Speaker R
(Load resistor:3
)
:Headphone terminal
Test tape
:VTT712(3kHz) or
TMT7036(3kHz)
Measurement
output terminal
:Headphone terminal
Maximum
output
Tape speed
of decks
(A and B)
:3,000Hz
60Hz
Adjust the head
azimuth screw
only when the
head has been
changed.
VR301
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
Tape recorder section
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
After setting to the double speed motor, confirm
that the frequency counter reading becomes
4,800+400/-300Hz when the test tape VTT712
(3kHz) has been play back with the playback
mechanism.
When the test tape VTT712(3kHz) has been played
back with the playback mechanism or recording and
playback mechanism at the beginning of forward
winding, the frequency counter reading of the
difference between both of the mechanisms should
be 6.0Hz or less.
When the test tape VTT712(3kHz) has been played
back with the playback mechanism or recording and
playback mechanism at the beginning of forward
winding the frequency counter reading of wow
flutter should be 0.25
or less(WRMS).
Double tape
speed
Difference
between the
forward and
reverse speed.
P.mecha and
R/P mecha
speed
Wow
flutter
Test tape
:TMT7036(10kHz)
Measurement
output terminal
:Speaker terminal
Speaker R
(Load resistance:3
)
measurement
output terminal
:Headphone terminal
Test tape
:TMT7036(10kHz)
Measurement
output terminal
:Headphone terminal
4,800+400/
-300Hz
60Hz or
less
with in
0.25%
JIS(WTD)
Playback
mechanism side
Both the playback
and recording
playback
mechanism
Both the playback
and recording
playback
mechanism
Reference values for confirmation items
Содержание MX-J570V
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