Technics RS-640US User manual

Technics
TAPE
DECK
RS-640US
OPERATING
INSTRUCTIONS
Before
operating
this
set,
please
read
these
instructions
cormpletely.

VOLTAGE ADJUSTMENT AJUSTE DE VOLTAJE
REGLAGE DU VOLTAGE
BB 2 az
EINSTELLEN DER SPANNUNG
SETTING OF VOLTAGE SELECTOR
AJUSTE DEL VOLTAJE
REGLAGE DU SELECTEUR DE VOLTAGE
SEBRS 2 BRK |
EINSTELLUNG DES SPANNUNGSWAHLERS
90
109V
90~109V | 110~125V | 200~219V | 220~250V
AC 110,
115, 117,
120, 125V
AC 220,
225, 230,
240, 250V
LOCAL VOLTAGE
VOLTAJE LOCAL
TENSION LOCALE
Bet St AY FR HK RE
ORTL. NETZSPANNUNG
50/60 Hz 50/60 Hz 50/60 Hz
ABOUT CASSETTE TAPE CINTAS TIPO “‘CASSETTE”
LES CASSETTES
Ht (ABBR) BRT
DIE KASSETTE C)
co=sy | SS
How to correct
tape looseness Use standard cassette Do not use this type
DISPOSITIVO PARA IMPEDIR QUE SE BORREN LAS CINTAS
DISPOSITIF DE PREVENTION D’ENREGISTREMENT
(a RETA SZ BALE
RECORD D4
LOSCHSCHUTZVORRICHTUNG
Pit dls
io Screwdriver
ee SS ELT T_T
For side 1 » YP »
Para el lado 1
For side 2 Br a 1 RECORD C)
Para el lado 2 eps aie FOS
Pourle caté2 ‘Pur Seite 1 SS => 4 Ke)
$50 HA Ng
Fur Seite 2 NI QYY
Cover hole with cellophane tape
G3 MAINTENANCE MANTENIMIENTO
ENTRETIEN
Head cleaning alles i
PFLEGE DES GERATES
Limpiado de las cabezas
Nettoyage des tétes
FGA.
7G
BR
;
Piece
of
wood
Baguette
de
bois
okie
Soft
cloth
Pano suave
Chiffon doux
FRAY th Fr
___Weiches Tuch
Ein Stuck Holz
Capstan Pressure roller
* DOLBY and ‘‘Double D”’ device are the Trademarks of the Dolby Laboratories Inc.
ETE
ound
‘inuados
ier Klang
» tuner
:
5 ocket

(ENGLISH)
We
want
to
thank
you
for
selecting
the
model
RS-640US
Technics
cassette
tape
deck
for
your
recording
and
playback
enjoyment.
To
obtain
the
maximum
benefit
of
the
many
features
of
this
deck,
please
carefully
read
these
operation
instructions.
OPERATION NOTES
1. Use this unit horizontally
~
If,
for
some
reason,
this
unit
must
be
used
at
an
angle
in
order
to
connect
to
the
amplifier
or
other
stereo
equipment,
be
sure
the
angle
does
not
exceed
30°.
2. Location
Avoid
extremely
hot
(above
100°F.
or
35°C.)
or
extremely
cold
(below
40°F.
or
5°C.)
locations
or
locations
in
direct
sunshine
or
where
subject
to
excessive
vibration,
because
the
performance
of
the unit may be adversely affected.
3.
Use
a
power
source
frequency
of
either
50
Hz
or
60
Hz
Because
this unit
has
a
DC
servo-motor,
a
power
frequency
of
either
50
Hz
or
60
Hz
may
be
used.
4. Power should be within +5% of the rated voltage
Note
that
the
unit’s
performance
will
be
uneven,
or
the
unit
may
be
damaged,
if
the
power
exceeds
+10%
of
the
rated
voltage.
5. Cleaning of the head assembly
One
of
the
most
important
factors
in
the
determination
of
good
tape
recorder
performance
is
regular
cleaning
of
the
head
assembly.
Refer
to
“MAINTENANCE”
on
page
E-5
and
be
sure
to
always
keep the head surfaces clean.
VOLTAGE ADJUSTMENT (Refer to fig. 1.)
Before
connecting
this
unit
to
the
AC
outlet,
make
sure
that
it
is
properly
set
to
your
local
voltage.
This
unit
has
been
set
to
operate
on
the
voltage
indicated
on
the
CAUTION
card
attached
to
the
unit.
If you use the unit in a different voltage area, readjust it to your local
voltage by setting the VOLTAGE selector with a screwdriver.
ABOUT CASSETTE TAPE (Refer to fig. 2.)
The cassette tape used in this unit Is the type universal throughout
the world.
Notes:
1. Never attempt to pull the tape out of the cassette openings.
2. Never try to turn the reels of the tape cassette by hand because to
do so may loosen the tape. If the tape is loose in the cassette, the
tape may become wound onto the pressure roller and result in
breakage or damage. Tighten looseness of the tape, if necessary,
by using a pencil as shown in the figure.
3. Avoid using C-120 cassette tape with this unit because this tape
can easily become broken, stretched or twisted if not used with
extreme care.
4. Avoid storing this unit in places where the temperature is high
and/or where the humidity is high.
5. If the tape is very tightly wound or unevenly wound, fast forward
it and then rewind it before use.
ACCIDENTAL ERASE PREVENTION
(Refer to fig. 3.)
Tape
cassettes
have
special
plastic
tabs,
one
each
for
side
one
and
side
two,
which,
if
removed,
prevent
accidental
erasure
of
recorded
material.
These
tabs
can
be
pushed
out
with
a
screwdriver
or
similar
tool.
If
they
are
pushed
out,
note
that,
for
this
unit,
the
RECORD
button
cannot
be
pushed.
If,
for
any
reason,
it
is
later
desired
to
make
a
recording
on
a
cassette
from
which
the
tabs
have
been
pushed
out,
it
is
possi-
ble
to
do
so
by
simply
covering
the
holes
where
the
tabs
were
with
cellophane
tape
and
recording
in
the
usual
way.
CONTROLS (Refer to fig. 5.)
@ TAPE COUNTER and reset button
@ Cassette compartment cover
@ EJECT button (EJECT)
@ RECORD button (RECORD)
6 REWIND button (REW) (44)
© FAST FORWARD button (FF) (>>)
@ PLAY button (PLAY) (>)
STOP button (STOP) (@)
©
PAUSE
button
(PAUSE)
(II
)
MICROPHONE
LEVEL
controls
(MIC
LEVEL)
@
HEADPHONES
jack
(HEADPHONES)
(stereo headphones-type plug)
@
MICROPHONE
jacks
(MIC
L-
R)
(phone-type
plug)
@
POWER
switch
(POWER)
LINE
INPUT
LEVEL
controls
(LINE
IN
LEVEL)
@ OUTPUT LEVEL control (OUTPUT LEVEL)
DOLBY NOISE-REDUCTION switch (DOLBY NR)
@
PEAK-SIGNAL-CHECK
switch
(PEAK
CHECK)
Recording indication lamp
Peak level/VU meters
@ TAPE selector (TAPE SELECT)
@) MEMORY-REWIND switch (MEMORY)
@ TAPE END indication lamp (END EYE)
@ LINE OUTPUT jacks (LINE OUT)
@
RECORD/PLAYBACK
connection
socket
(REC/PB)
@
LINE
INPUT
jacks
(LINE
IN)
CONNECTIONS (Refer to fig. 6.)
CONNECTION NOTES
This
deck
is
designed
for
easy
connection
with
a
stereo
amplitier,
a
receiver,
etc.
These
connections
can
be
made
by
referring
to
the
connection
diagram
and
the
following
instructions:
1.
Do
not
connect
both
a
DIN
connection
cord
and
ordinary
con-
nection cords to this unit at the same time because to do so will
result
in
abnormal
oscillation
from
the
amplifier,
and
recording
and
playback will be impossible.
2
Note
that
a
DIN
connection
cord
cannot
be
used
to
connect
this
unit with another tape recorder because a complete circuit is not
made.
3.
When
2
microphones
are
used
in
order
to
record
in
steeeophonic
sound,
be
sure
to
use
2
microphones
which
have
the
same
perform-
ance
and
specification
standards.
When
only
one
microphone
is
used,
connect
it
to
either
MICRO-
PHONE
jack,
and
set
the
MICROPHONE
LEVEL
contro!
for
the
channel
not
being
used
to
the
“0”
position.

CASSETTE INSERTION AND REMOVAL
1. Push the EJECT button, and insert the tape cassette, with the end
where the tape is exposed facing toward you and with the fully-
wound reel of tape on the left.
2. To remove the cassette, be sure to first push the STOP button to
stop the taoe movement, and then push the EJECT button.
FAST FORWARD AND REWIND
Fast forward...Tape is quickly moved forward onto the right reel
by pushing the FF button.
Rewind ...... By pushing the REW button, the tape is rewound
rapidly to the left reel.
Stop ......... To stop the rewind or fast forward, push the STOP
| button.
Caution:
1. Do not push the EJECT button during the fast forward or the
rewind operation. Before pushing the EJECT button, be sure to
first stop the tape by pushing the STOP button.
2. To change from fast forward or rewind to playback, first push the
STOP button. If the PLAY button is pushed during the fast forward
or rewinding operation, it will not function.
PLAYBACK
1. For playback of tape recorded by the Dolby noise-reduction
system, set the DOLBY NOISE-REDUCTION switch to the “FILTER
OUT” position.
2. Set the TAPE selector depending upon the type of tape to be played
back.
Type of tape TAPE selector position
* Chromium-dioxide tape recorded Cro
by 70uS system | fad
* Ordinary tape
NORMAL
* Low-noise tape
* Chromium-dioxide tape recorded
by previous system (1204S)
3. After inserting the cassette, push the PLAY button.
4. Adjust the level and the tone quality by using controls on the
amplifier.
5. After the playback finishes and the tape has reached its end, the
automatic-stop system functions to return the PLAY button to its
Original position, and the operation is automatically stopped.
Notes:
1. Be sure. that tape recorded by the DOLBY noise-reduction
system is played back with the DOLBY NOISE-REDUCTION
switch set to the “FILTER OUT” position. lf the tape is played
back with the switch set to the ‘OUT’ position, the treble
sounds will be overemphasized and the sound will be unplea-
Sant to the ear.
2. The OUTPUT LEVEL control of this unit can be conveniently
used to adjust the level of the signal from this unit to the level
of the signal of a record player, tuner, etc. For this reason, this
control is, on this unit, designed to affect only the level of the
signal from the LINE OUTPUT jacks. There will be no effect,
therefore, upon the fluctuations of the meters nor upon the level
of the signal from headphones.
RECORDING |
1. To make a recording of an FM broadcast by using the Dolby noise-
reduction system, set the Dolby NOISE- REDUCTION switch to the
center position (“FILTER IN’). To make a recording of any other
sound source by using the Dolby noise-reduction system, set this
switch to the “FILTER OUT” position. To make a recording by not
using the Dolby noise-reduction system, set this switch to the
“OUT” position.
2. Connect the equipment to be used for the recording, such as a
microphone
or
stereo
amplifier.
(Refer
to
“CONNECTION
NOTES”
3. Set the TAPE selector to the correct position, depending on the type
of tape on which the recording is to be made. (Refer to fig. 8.)
Type
of
tape
TAPE
selector
position
*x Chromium-dioxide tape
* Ordinary tape
* Low-noise high-output tape
4. Insert the cassette.
Be sure to use a cassette which has the two plastic tabs intact. If
these
tabs
have
been broken
out,
the
RECORD
button
cannot
be
pushed and no recording can be made.
5. When the RECORD button is pressed, the unit isin the recording
mode.
6. The recording level can then be adjusted to the correct level by
Adjust the recording level by turning the MICROPHONE LEVEL ot
LINE INPUT LEVEL controls so that the indication needles of the
peak
level/VU
meters
move
only
within
the
range
indicated
by
on page E-1.)
—
NORMAL
Note:
(Refer
to
“ACCIDENTAL
ERASE
PREVENTION”
on
page
E-1.)
introducing sound similar to that to be recorded.
the arrows, even at maximum sound input.
7. If the PEAK-SIGNAL-CHECK switch is set to the “IN” position
refer to the section “ABOUT THE PEAK-SIGNAL-CHECK
SWITCH.”
8. After all adjustments are finished, push the PLAY button while
depressing the RECORD button. The tape will begin moving and the
recording will be made.
9. When the recording is finished and the tape reaches its end, the
automatic-stop system will function to automatically stop the
operation.
“MIX’’ RECORDING
“Mix” recordings of:
1. sound from the LINE INPUT jacks and from microphones or
2. sound from the LINE INPUT jacks and from the amplifier (con
nected to the RECORDING/PLAYBACK connection socket of thi
unit) can be made with this unit.
@ How to make “mix” recordings
. In order to make a well-balanced “mix” recording, use headphone
to listen to the sound, and adjust the LINE INPUT LEVEL contro
and the MICROPHONE LEVEL controls as necessary.
2.
When
a
“mix”
recording
is
not
being
made,
set
those
contro
which are not being used to their minimum ("0") position.
—_

ABOUT
THE
PEAK-SIGNAL-CHECK
SWITCH
(Refer
to
fig.
7.)
@ Adjustment of the recording level
To
adjust
the
recording
level
on
ordinary
tape
decks,
the
level
is
adjusted
so
that
the
indication
needles
of
the
level
meters
fluctuate
at
a
point
as
near
to
(but
below)
the
“0”
point
as
possible.
Because
this
unit
has
a
PEAK-SIGNAL-CHECK
switch,
however,
the
adjust-
ment
of
the
recording
level
can
be
made
as
described
below
for
best
results.
1.
Adjustment
of
the
recording
level
by
using
the
PEAK-SIGNAL-
CHECK
switch
- @ Set the PEAK-SIGNAL-CHECK switch to the “OUT” position,
and
adjustso
that
the
indication
needles
do
not
fluctuate
beyond
the “O dB” point.
,
@
Next,
set
the
PEAK-SIGNAL-CHECK
switch
to
the
“IN”
posi-
tion.
Then,
at
a
time
when
the
music
is
pulsating
and
such
rhythm
is
reaching
its
peak,
set
the
MICROPHONE
LEVEL
controls
or
LINE
INPUT
LEVEL
controls
to
a
position
which
will
restrain
the
needles
from
moving
beyond
the
“+6
dB”
point
(referring
to
the
“PEAK
IN’
portion
of
the
meters).
By
so
doing,
the
recording
can
be
made
without
distortion.
@®
Occasionally,
set
the
PEAK-SIGNAL-CHECK
switch
to
the
“OUT”
position
and
confirm
that
the
needles
do
not
move
beyond
the
“O
dB”
point
of
the
upper
part
of
the
meters.
2.
Difference
of
indication
needle
movement
caused
by
setting
the
PEAK-SIGNAL-CHECK
switch
to
the
“IN”
and
‘‘OUT”
positions
Because
the
response
to
sound
signals
by
indication
needles
of
ordinary
level
meters
is
slow,
the
actual
level
of
momentary
signals
is
not
accurately
indicated
by
such
meters.
This
means,
of
course,
that
there
is
always
the
possibility
that
recordings
may
be
distorted
by
large
signals
which
are
momentary.
The
peak
level/VU
meters
of
this
unit
include
a
special
PEAK-SIGNAL-CHECK
switch
which,
when
set
to
the
“IN”
position,
results
in
the
indication
by
the
meters
of
the
level
of
sounds,
even
momentary
sounds,
with
extremely
precise
accuracy.
The
peak
level/VU
meters
of
this
unit
each
have
dual
scale
indica-
tions
which
should
be
read
in
the
following
way:
With the PEAK-SIGNAL-CHECK switch set to the “IN” position,
the
scale
is
read
up
to
the
+6
dB
mark
on
the
lower
part
of
the
meters.
With the PEAK-SIGNAL-CHECK switch set to the “OUT” position,
the scale is read up to the +3 dB mark on the upper pari of the
meters.
The needle fluctuation for momentary sound and for continuous
sound is shown in figure 7.
MONITORING
“Monitoring’’ means to listen, using headphones, to the sound being
recorded at the same time it is being recorded. This is very convenient
for actual aural confirmation of the material being recorded.
To monitor, connect stereo headphones (89) to the HEADPHONES
jack (HEADPHONES).
Note:
fn the same way as for playback, an amplifier can also be used for
monitoring. Note, however, if the recording is being made via a con-
nection made tothe RECORDING/PLAYBACK connection socket, that
monitoring can be done only with headphones.
HOW TO USE THE PAUSE BUTTON
The
PAUSE
button
is
used
for
instantaneous
temporary
stops
and
starts
of
tape
movement
during
recording
or
playback.
When
this
button
is
pushed
to
the
depressed
position,
it
remains
in
that
position
(and
the
tape
stops)
until
it
is
pushed
once
again
(and
the
tape
resumes
movement).
The
PAUSE
button
of
this
unit
has,
in
addition,
one
more
special
func-
tion
which
is
necessary
for
a
recording
or
playback
made
in
conjunction
with
a
timer
connected
to
this
unit.
Thus,
by
pushing
the
PAUSE
button
while
the
power
to
this
unit
is
off,
and
preparing
the
unit
for
recording
or
playback,
the
PAUSE
but-
ton
will
be
automatically
released
and
the
tape
will
begin
to
move
when
power
to
the
unit
is
resumed
(as
controlled
by
the
timer).
RECORDING
WITH
A
TIMER
(Refer
to
fig.
9.)
(Timer recording of FM broadcasts)
1. Connections
Connect the power source. (Refer to figure 9.)
Connect the sound source. (Refer to figure 6.)
2.
Insert
a
blank
tape
cassette
into
this
unit,
and
then
push
the
power
switch
to
turn
on
the
power.
3.
Tune
to
the
FM
broadcasting
station
from
which
the
broadcast
will
be
later
made,
and,
with
the
PAUSE
button
of
this
unit
de-
pressed,
then
push
the
RECORD
button
and
the
PLAY
button
and
make
adjustment
of
the
recording
level.
4.
Set
the
timer
to
the
time
at
which
the
recording
should
begin.
lf
the
timer’s
power
was
on,
it
will
now
turn
off
(although
the
opera-
tion
of
the
timer
itself
will,
of
course,
begin).
These
steps
complete
the
preparations
necessary
for
recording
by
a
timer.
When
the
timer
reaches
the
time
to
which
is
was
set,
power
will
pass
through
the
timer
to
this
unit,
thus
releasing
the
PAUSE
button,
and the recording of the FM broadcast will begin.
Notes:
1.
When
the
tape
reaches
its
end,
the
automatic-stop
system
will
function
and
the
operation
controls
will
return
to
their
original
positions.
If,
however,
the
timer
used
is
the
type
which
can
be
set
to
turn
off
the
power,
and
it
is
set
to
turn
off
the
power
before
the
tape
reaches
its
end,
the
mechanism
of
this
unit
will
not
bereleased
when
the
power
is
turned
off,
and
it
is
possible
that
the
pressure
roller
may
in
that
way
become
deformed.
It
is
for
this
reason
re-
commended,
if
such
a
timer
is
used,
that
the
tape
be
allowedto
move
until
it
reaches
its
end and thereby
causing
the
automatic-stop
system
to
function
before
the
power
is
turned
off
by
the
timer.
.
To
stop
the
tape
movement,
if
desired,
during
the
recording.
simply
push the STOP button of this unit.
PLAYBACK WITH A TIMER
1. Insert the already-recorded tape cassette into this unit and make
connections to the power source and for playback.
2.
Make
a
trial
playback
and
adjust,
if
necessary,
the
volumea
nd
tone
quality
(by
using
controls
on
the
amplifier
to
which
this
unit
Is
connected)
to
the
level
desired
when
the
timer
playback
begins.
3. Rewind the tape to the point from which the timer playback Is to
begin, push the PAUSE button, and then push the PLAY button.
4. Set the timer to the desired time for beginning of the pl ayback.
(Depending
on
the
type
of
timer
used,
the
power
to
the
timer
will
be
turned
off
automatically—if
it
was
on—although
the
operation
of
the
timer
itself
will,
of
course,
begin.)
These steps complete the preparations necessary for playback by a
timer.
When
the
timer
reaches
the
time
to
which
it
was
set,
thep
layback
will begin.

CHROMIUM DIOXIDE TAPE.
M@ The TAPE selector
In order to assure the best performance when using chromium-dioxde
tape:
1. Playback equalization,
2. Recording equalization and
3. Recording bias
can all be changed at the same time by using the tape selector.
As a result, chromium dioxide tape can be used to obtain clear tone
quality, with very little noise, and a wide dynamic range. Furthermore,
although a time constant of 1204S has previously been used in tape
recorders designed for use with chromium-dioxide tape, this unit uses
a time constant of 7O0uS in order to obtain much better performance
from chromium-dioxide tape.
The characteristics of this unit are adjusted for optimum use with
the following tape:
For the “NORMAL” position of the TAPE selector, standard cas-
sette tape (QP-12R), which corresponds to type C-90 (RT-90):
and, for the ‘’‘CrO2” position of the TAPE selector, Technics chro-
mium-dioxide tape (RT-60C).
THE TAPE-END INDICATION LAMP
When, during recording or playback, there is only a small amount of
tape remaining, the TAPE-END indication lamp will flash on and off.
C-60, C-46, €-30.
Notes:
1. The time at which this flashing will begin may vary depending
upon the type of tape and the manufacturer.
2. When some tape cassettes which have a large hub (such as, for
example, TDK SA-C45) are used, the TAPE-END indication lamp
may not flash, or may begin to flash only when there is a very small
amount of time remaining on the tape.
DOLBY RECORDING HINTS
This unit includes the Dolby noise-reduction system, which reduces
tape noise to a remarkable degree.
To briefly describe the way the Dolby system operates, at low signal
levels (where tape noise is most noticeable), it increases the level of
the high-frequency portion of the sound and then records the sound.
Then, during playback, by reducing the level of only that portion which
was increased at the time of recording, the tape noise can be reduced
by that same amount.
elf Dolby recordings are made under conditions in which the record-
ing sensitivity varies, or in which the frequency response is not
flat, the Dolby system cannot function with sufficient efficiency.
When, forexample, recording sensitivity is high, the treble range will
be overemphasized. And, if frequency response is poor, it will be-
come even further deteriorated. It is important, therefore, that the
selection of the setting of the TAPE selector, and the choice of the
tape to be used, be made with deliberate care.
e if, when a tape is recorded by the Dolby system, a memorandum is
written on the cassette, accidental playback in the ordinary (non-
Dolby) way can be avoided.
MEMORY REWIND
The Memory Rewind system can be used to conveniently return the
tape automatically, during rewind, to any desired position.
Convenient uses of the Memory Rewind system
1. To return to the beginning of a recording and play it back immedia-
tely after making the recording.
2. To repeatedly begin playback many times from the same position.
How to use the Memory Rewind system
1.
When,
during
recording
or
playback,
the
tape
reaches
the
point
to
which
it
should
later
be
returned,
push
the
TAPE
COUNTER
RESET
button
to
reset
it
to
OOO.
~
9.
At
the
same
time,
set
the
MEMORY-REWIND
switch
to
the
“ON” position.
3.
When
the
playback
or
recording
is
finished,
stop
the
tape
move-
ment
by
pushing
the
STOP
button.
4.
Then,
by
simply
pressing
the
REW
button,
the
tape
will
be
auto-
matically
rewound
to
a
position
slightly
prior
to
the
000
position
of
the
tape
counter.
Notes:
1. Tape movement will stop immediately as soon as the TAPE
counter
shows
any
number
from
900
to
999
during
rewind
if
the
MEMORY-REWIND switch is on. Be sure that the MEMORY-
REWIND switch is off at all times unless it is being used for
memory rewinding of the tape.
2. After the tape has been rewound to the position desired, as
described previously, rewind can be continued further, if desired,
by pushing the REW button once more.
3. Tape movement will stop if the MEMORY-REWIND switch is
moved from the “OFF” position to the “ON” position during
rewinding of the tape and the TAPE counter shows any number
from 900 to 999.
4. lf the PAUSE button is pushed during the Memory Rewind
operation (or was already pushed before the Memory Rewind
operation began), the PAUSE button will be automatically
released when the TAPE counter reaches 999, the tape will not
stop at the previously selected part of the tape, and will continue
rewinding until its end is reached, at which time the automatic-
stop system will function.
AUTOMATIC-STOP SYSTEM
This
unit
has
an
automatic-stop
system
which,
when
the
tape
comes
to
its
end
during
recording,
playback,
fast
forward
or
rewind,
releases
the
tape-transport
mechanism
automatically
and
places
the
unit
in
the
stop
mode.
The
advantages
of
this
automatic-stop
system
are:
*
Because
the
mechanism
automatically
stops
when
the
tape
comes
to
its
end,
both
the
operating
parts
and
the
tape
itself
are
protected.
(This
unit
is
free
from
problems
such
as
pressure
rolle
deformation
resulting
from
leaving
the
unit
in
the
stop
condition—w
ithout
push-
ing
the
STOP
button—for
a
long
period
of
time.)
FOUR-TRACK, TWO-CHANNEL RECORDING
SYSTEM
The recording is always made on the lower half of the tape width.
Two-way recordings can be made in the following way, Tracks 1 anc
2 are recorded first, and, when the tape reaches its end, turn the
cassette over and re-insert it. Record in the same mamer as before
The other two tracks will then be recorded.
(Although this cassette stereo tape deck has the 4-tracks ystem, tracks
1 and 2, or tracks 3 and 4, cannot be separately recoded.)

ERASING
When
recording,
any
previously-recorded
material
on
the
tape
Is
erased
automatically.
To
erase
an
existing
recording
without
making
a
new
one,
disconnect
the
microphones
or
other
input
connection
cords,
set
the
MICROPHONE
LEVEL
controls
and
the
LINE
INPUT
LEVEL
controls
to
minimum,
and
operate
the
unit
in
the
same
way
as
for
recording.
All
previous
recordings
are
completely
erased
as
the
cassette
runs
from
beginning
to
end
on
each
side.
MAINTENANCE (Refer to fig. 4.)
The
head
assembly,
the
capstan
and
the
pressure
roller
are
always
in
contact
with
the
tape
during
operation.
Therefore,
they
tend
to
get
dirty
very
easily
and
have
an
adverse
influence
upon
the
sound
quality
and
the
level.
Dirt
can
cause
sound
loss,
noise
and
deterioration
of
the
frequency
characteristics.
Therefore
it
is
occasionally
necessary
to
clean
these
parts
as
follows.
HM
Remove
the
cassette
and
wipe
the
capstan
and
the
pressure
roller
with
a
soft
cloth.
When
the
PLAY
button
is
pushed,
the
head
assembly
becomes
accessible.
Clean
the
head
assembly.
If
the
dirt
is
excessive,
wind
a
small
piece
of
soft
cloth
around
the
piece
of
wood
and
apply
a
slight
amount
of
alcohol
to
it.
Notes:
1.
Don’t
allow
magnetic
materials,
such
as
a
screwdriver
or
a
magnet,
near
the
head
assembly.
2. When cleaning, be careful not to bend the tape guides.
3.
Don’t
attempt
to
clean
the
cabinet
with
alcohol,
benzine
or
thinner,
because
it
may
damage
the
finish.
If
the
cabinet
is
dirty,
clean
with
a
soft
cloth
dampened
with
a
soap-and-water-
solution.
MEMO
TROUBLESHOOTING.
lf
operation
of
this
unit
does
not
seem
normal,
check
the
following
points
before
requesting
service.
If
the
trouble
cannot
in
this
way
be
determined
and
corrected,
contact
the
dealer
from
whom
it
was
purchased.
1.
After
the
tape
cassette
is
inserted,
the
tape
does
not
move
when
the
PLAY
button
is
pushed.
«Is
the
power
cord
correctly
connected
?
-
ls
the
POWER
switch
pushed
in
to
the
“ON”
position
?
-
ls
the
PAUSE
button
released
?
2. Although the tape moves, no sound is heard.
«ls the tape blank ?
-
Are
the
connections
of
amplifier
and
speakers
correct?
«Are
connection
cords
from
this
unit
to
the
amplifier
correctly
connected
?
-
Is
the
level
control
of
the
connected
amplifier
set
to
the
correct
position
?
-
Is
the
monitor
switch
of
the
connected
amplifier
set
to
the
correct
position
?
~
Is
the
OUTPUT
LEVEL
control
set
to
the
correct
position
?
3. Sound is distorted.
«Is the recording level too high?
els the playback output level too high ?
«Is
the
input
impedance
of
the
connected
amplifier
appropriate
?
4. The RECORD button cannot be pushed down.
«ls the tape cassette inserted correctly ?
«Have
the
recording-prevention
tabs
of
the
cassette
been
removed ?
5.
Playback
sound
is
hoarse
or
vibrates.
Recorded
sound
is
not
clear.
«
Are
the
head
surfaces
dirty
?
-
ls
foreign
material
adhered
to
the
pressure
roller
and/or
the
capstan
?

SPECIFICATIONS
Track System:
Tape Speed:
Wow and Flutter:
Frequency Response:
Signal-to-Noise Ratio:
Fast Forward and
Rewind Time:
Inputs:
Outputs:
Rec/PB Connection:
Motor:
Heads:
Power Requirements:
Power Consumption:
Dimensions:
Weight:
4-track 2-channel stereo recording and playback
4.8 cm/s, (1% ips) |
0.07% (WRMS), +0.15% (DIN)
CrO2 tape; 20—16,000 Hz
30—13,500 Hz +3 dB
30—14,500 Hz (DIN)
Normal tape; 20—15,000 Hz
30—12,500 Hz +3 dB
30—13,500 Hz (DIN)
DOLBY NR tn: 61 dB (above 5 kHz)
DOLBY NR out; 51 dB
(signal level=250nWb/m)
Approx. 130 seconds with C-60 cassette tape
MIC; sensitivity 0.3mV/applicable microphone
impedance 6000—20ka
LINE; sensitivity 6(0mV/input impedance 68 ka
LINE: output level 0.42V/load impedance 50kQ over
HEADPHONE; output level 65mV/8Q
5P DIN type
1-Electronic speed control motor
1-HPF head for rec/playback
1-Ferrite head for erasing
AC; 90—109/110—1 25/200—219/220—250V
50/60 Hz (not necessary to change any part)
7W
43.2cm(W) X13.0cm(H) x 30.1cm(D)
(17° x5%x"11K")
5.8 kg (12% Ibs.)
The above specifications show the numerical value measured with our standard tapes
conforming to the IEC standard.
Specifications are subject to change without notice.
*Manufactured under license from Dolby Laboratories Inc.

Va Matsushita Electric
wie Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka, Japan
Printed in Japan
QQT1069 FO476t