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JVC MF-33L User Manual

JVC MF-33L
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—_
.
DOLBY
N.R.
Level
1.
Set
SOURCE
SELECT
switch
to
“AUX”.
2.
Set
DOLBY
N.R.
switch
to
“OFF”.
3.
Set
the
deck
in
recording
mode.
4.
Apply
1kHz
signal
of
proper
level
(0.5V_
ap-
proximately)
to
“AUX”
input
terminal.
.
Adjust
the
front
REC
VOLUME
so
that
the
signal
level
will
be
-25
dBm
at
the
terminals
of
VR401
(L-ch)
and
VR402
(R-ch)
respectively.
(Refer
to
Fig.
17)
6.
Finally
adjust
VR401
and
402
so
that
the
level
will
be
-2.5
dBm
at
the
Dolby
T.P.
(L)
and
(R).
ol
2.
Adjustment
of
Level
Meter
After
adjustment
of
Dolby
Noise
Reduction
Level
was
completed,
adjust
the
VR303
(L)
&
VR304
(R)
so
that
the
level
meter
indicates
Cal
(+3VU).
(Refer
to
Fig.
17)
3.
Playback
level
1.
Set
SOURCE
SELECT
switch
to
“TAPE”.
2.
Set
EQUALIZER
switch
to
“NORMAL”,
3.
Set
DOLBY
N.R
switch
to
“OFF”.
4.
Play
the
reference
tape
VTT-664,
(1kHz),
and
adjust
VR301
(L-ch)
and
VR302
(R-ch)
so
that
the
level
meter
will
indicate
OVU.
4.
Adjustment
of
Recording
bias
and
frequency
1.
Connect
a
resistor
10082
to
the
earth
side
terminal
of
R/P
head
in
recording
state,
and
connect
AC
milivoltmeter
to
the
both
terminals
of
the
resistor.
(Refer
to
Fig.
16)
2.
While
changing
the
bias
switch,
adjust
so
that
the
specified
current
will
be
obtained.
The
adjustment
should
be
made
from
“CHROME”.
.
Bias
Lo
ow
Place
to
be
adjusted
Current
VR307
(L-ch)
550uA
CHROME
|
vR308
(R-ch)
(55mV/1002)
NORMAL
|
VR
309
(L,R-ch)
400uA
(40mV/1002)
3.
Regarding
bias
frequency,
adjust
T301
so
that
57kHz
will
be
obtained
when
the
front
BEAT
CUT
Switch
is
set
to
1.
MF-33L/ML
es
0)
nf
oa
VR402
(s)
vraoi@)
Fig.
17
5.
Adjustment
of
Recording
signal
current
1.
For
this
adjustment,
it
is
necessary
that
the
swing
angle
of
the
level
meter
and
playback
sensitivity
are
correctly
adjusted
previously.
2.
Set
the
equalizer
switch
and
bias
switch
to
“NORMAL”,
3.
In
recording
state,
apply
1kHz
signal
of
proper
level
(0.5V
approximately)
to
“AUX”
input
terminal,
and
adjust
the
front
Recording
volume
so
that
the
level
meter
will
indicate
OVU.
4.
In
this
state,
repeating
the
recording
and
playback,
adjust
VR305
(L-ch)
and
VR306
(R-ch)
until
the
level
meter
indicates
OVU.
Tape
speed
Standard
speed:
3,000Hz
+2%
(at
playing
a
3,000Hz
test
tape)
If
not
as
specified,
insert
your
driver
in
hole
on
the
motor
upside
and
adjust
a
semi-VR
for
speed
control
in
the
motor
case.
(Fig.
17
*
)
No.
7020

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JVC MF-33L Specifications

General IconGeneral
BrandJVC
ModelMF-33L
CategoryStereo System
LanguageEnglish

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