Teac W-370C - Page 5

W-370C/W-375C/W-350/W-355/W-310Cm«I/W-300m«II
4
MECHANICAL
ADJUSTMENT
AND
CHECKS
4-1 WOW AND FLUTTER
Note:
This
measurement
should
be
made
at
the
begining,
middle,
and
the
end
of
the
tape.
PLAYBACK
1.
Connect
a
wow-and-flutter
meter
to
the
deck
as
shown
in
Fig.
4-1.
2.
Load
and
play
a
TEAC
MTT-111
test
tape.
3.
Check
that
the
reading
on
the
wow-and-flutter
meter
is
within
0.38%
(RMS).
4-2 TAPE SPEED
1.
Connect
a
frequency
counter
to
the
deck
as
shown
in
Fig.
4-1.
2.
Simply
press
POWER
switch
to
ON
to
rotate
the
motor,
then
continue
the
motor
rotation
for
approx.
1
minute
for
warmp-up.
3.
As
soon
as
the
warm-up
finishes,
load
a
TEAC
MTT-111
test
tape
with
a
3,000
Hz
test
tone
and
play
the
end
of
the
test
tape.
4,
Adjust
each
variable
resistor
to
get
the
following
figures,
Short
TP
(SPEED
ADJ)
to
get
the
double
tape
speed
(HIGH
speed).
Never
press
TAPE
SPEED
switch
to
HIGH
position.
Adjustment
point
Adjustment
value
HIGH
speed
6020
~
6040
L
ibis LOW speed R31 3010 ~ 3020
REC/PLAY
II
HIGH
speed
|
R34
6000
~
6020
LOW speed R33 3000 ~ 3010
*
At
first,
adjust
NORMAL
tape
speed.
9.
In
play
mode,
check
that
the
following
figures
are
obtained
at
the
beginning
and
at
the
end
of
the
tape.
a
eee
el
LOW
speed
HIGH
speed
3000
Hz
+90,
—60
Hz
{6000
Hz
+180,
—120
Hz
Speed
drifting
Within
45Hz
|
Within9OHz
|
Frequency Counter
Oscillator
Wow &
Fiutter Meter
R
LINE IN
Fig. 4-1
4-3 REEL TORQUE
1.
Load
the
cassette
torque
meter
on
the
deck
and
read
the
pointer
indication
on
the
dial
scale
for
each
tape
transport
operation.
The
measured
torque
should
be
within
the
following
specified
values:
Specifications:
Take-up:
30
~
60g-cm
(0.42
~
0.84
oz-inch)
Supply:
1
~
4g-cm
(0.014
~
0.056
02-inch)
FLF/REW:
55
~
120g-cm
(0.77
~
1.68
oz-inch)
44 LUBRICATION
Lubrication
is
only
required
when
parts
are
replaced.
For
this
pur-
pose,
use
the
oil
specified
below.
Oil:
TEAC
spindle
oil
(from
TEAC
TZ-255
oi
kit),
Mobil
0.T.E.
Oi!
Light,
or
equivalent
Apply
a
drop
of
oil
with
an
oil
applicator
to
a
point
about
1/3
the
way
down
the
shaft
(from
the
free
end)
of
the
flywheel,
then
insert
the
shaft
into
the
capstan
housing.
Capstan shaft |
apply
a
drop
of
oil
here
Capstan flywheel ass’y
Capstan housing
Fig. 4-2
4-5
VOLTAGE
CONVERSION
(General
Export
Models
only)
1.
ALWAYS
DISCONNECT
THE
POWER
LINE
CORD
BEFORE
MAKING
THESE
ADJUSTMENTS!
2.
Locate
the
voltage
selector
on
the
rear
panel.
3.
Using
a
regular
screwdriver,
turn
the
selector
until
the
numerals
corresponding
to
the
voltage
requirements
of
your
area
appear.
Rear View
110/120/220/240V
Fig. 4-3