Matsushita Electric NATIONAL RQ-152S User manual

NATIONAL
TAPE
RECORDER
SERVICE
MANUAL
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RQ-152S
A.C
D.C
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TAPE
RECORDER
CONTENTS
SPECIFICATIONS
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MATSUSHITA
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JAPAN

SPECIFICATIONS
Power
Source:
Audio
Output:
Transistors
:
Recording
System:
Erasure
System:
Track
System:
Monitor
Systen:
Tape
Speeds:
Frequency
Response:
Input
Impedance:
Output
Impedance:
Playing
Time:
Battery
Life:
Recording
Level
Indicator:
Built-in
Speaker:
Dimensions:
Weight:
PARTS
LOCATION
Supply
Reel
Operating
Lever
Counter
Reset
Button
Index
Counter
V.U
Meter
Record
Button
Fast
Forward
Button
Volume
Control
Knob
Tone
Control
and
Monitor
Switch
Knob
A.C.
or
Battery
Powered
A.C.
110V,
220V
Battery
9V
6
Batteries
700
mW
(1W
maximum)
2SB-173(1)
2SB-175(2)
2SB-178(2)
2SB-172(1)
AC.
Bias
35K
Cycles
D.C.
Erase
2
Track
System
Sound
Monitor
System
3-3/4i.p.s.
and
1-7/8i.ps.
100~7,000
c/s
at
3-3/4
i.p.s.
100~4,000
c/s
at
1-7/8i.ps.
Microphone
20
KQ
Auxiliary
“RADIO”
100
KO
Extension
Speaker
Jack
“EXT.SP”
8
Q
1
hour
at
3-3/4i.p.s.
with
5”
Tape
(600
ft)
2
hour
at
1-7/8i.p.s.
with
5”
Tape
(600
ft)
More
than
30
hours
(using
NATIONAL
“Hi-Top”
Batteries)
V.U
Meter
3-5/8”
Dynamic
Speaker
11-3/4’
(W)
x
10”
(D)
x
3-1/2”
(H)
6-3/4
Ibs.
without
Butteries
Takeup
Reel
Capstan
Rest
Capstan
external
Speaker
Output
Jack
Radio
Jack
Microphone
&
Remote
Control
Jack

BLOCK
DIAGRAM
OF
ELECTRICAL
CIRCUITS
RECORDING
CIRCUIT
MONITOR
Ue
Sound
Monitor
SW.
SPEAKER
Feedback
Deen
”
Record
y,
J
MIC.
Head
Tr
Tr2
2SB-173
2SB-175
Transformer
Transformer
2SB-178
“B”
Transistor
Tré
258-172
Power
Source
Erase
A.C
Power
Source
Motor
PLAYBACK
CIRCUIT
Negative
Feedback
Tr4
Equalization
Tone
Control
MONITOR
©
SPEAKER
Volume
Playback
Control
Head
Tri
Tr2
2SB-173
2SB-175
2SB-175
*
Input
Out
put
Transformer
Tr5
Transformer
2SB-178
A.C
Power
Source
“B”"
Transistor
Power
Source
Ln
ee
ee)

DISASSEMBLY
INSTRUCTIONS
1.
Remove
the
operating
Lever
and
the
capstan
sleeve
3-3/4
ips.
2.
Remove
the
Bottom
Cover.
BOTTOM
COVER
3.
Undo
chassis
fixing
screws
6
pcs.
(C).
AC
Power
Cord
4.
Hold
the
Flywheel
of
chassis,
and
pull
it
up
slopewise
Battery
Compartment
Cover
Compurtment
Cover
from
Reel
Table
side.
Note:
Attention
must
be
paid
to
lead
wire
from
IN
4
speaker.
=
—
MOTOR
1.
Turn
the
set
upside
down.
2.
Undo
the
fixing
screws
3
pcs.
(A)
of
the
Bottom
Cover
and
the
fixing
screws
2
pcs.
(B)
inside
of
the
Battery
Case.
Position
of
al
3.
If it
is
lifted
from
the
hinge
side,
the
Bottom
Cover
id
(e
STONE
Mark
[8
|
can
be
removed.
Note:
Attention
must
be
paid
to
lead
wire
from
Battery.
MAIN
CABINET
BODY
CASE
Head
Cover
Oe
ak
Sleeve
3-34
i.p.s.
.
Remove
the
Motor
Spring
from
the
Motor.
.
Remove
the
3
Motor
Lead
wires
(Yellow,
Red
and
Blue.)
.
Remove
2
screws
(D)
holding
Motor
Holder.
.
In
doing
so
mark
the
original
position
of
the
Holder
first.
When
replacing
the
Motor,
fit
it
to
the
position
marked
When
removing
the
old
Motor,
then
test
the
tape
Operating
Lever
speed.
COUNTER
PWRHYr

FLYWHEEL
(>)
Paper
Washer
1.
Remove
Paper
Washer
and
Stop
Ring
on
the
Flywheel
Shaft
(Capstan).
Takeup
Reel
Table
Takeup
Belt
Guide
Pulley-A
2.
Remove
the
Rubber
Belt
from
the
Guide
Pulley-A.
(E)
Sub
Base
Plate
>)
Ss
|
wee
;
Ss
QE
2]
ry
EF
Clutch
Lever
Spring
Catch
Lever
Spring
3.
Remove
the
Catch
Lever
Spring
and
the
Clutch
Lever
Spring.
4.
Remove
the
3
screws
(E)
holding
the
Sub
Base
Plate.
5.
Remove
the
Sub
Base
Plate.
6.
Pull
the
Flywheel
upward.
When
replacing
the
Flywheel,
always
install
new
Flywheel.
Thrust
Ball
and
Paper
Washers
on
the
Flywheel
Shaft
i
RA
Paper
Washer
(a
[ie
ea22
5~
Flywheel
Thrust
Ball
MECHANICAL
OPERATING
CONTROLS
SINGLE
LEVER
CONTROL
All
electrical
and
mechanical
functions
are
performed
by
the
single,
4
position
Operating
Lever.
The
batteries
are
disconnected
in
the
STOP
position.
1.
Turning
the
Operating
Lever
counter-clockwise
to
the
PLAYBACK
position
switches
the
Amplifier
ON
and
actuates
the
tape
transport
mechanism
to
properly
Playback
a
recorded
tape.
2.
Turning
the
Operating
Lever
counter-clockwise
to
the
REWIND
position
switches
the
Amplifier
OFF
and
actuates
the
mechanism
to
cause
transport
of
the
tape
onto
the
supply
reel.
3.
Pressing
the
Record/Lock
Button
and
tuming
the
Operating
Lever
to
RECORD
actuates
the
tapetransport
mechanism
and
switches
the
electrical
citcuits,
to
enable
the
signal
from
the
microphone
to
be
recorded.
Record/Lock
Button
is
a
safety
locking
device
to
prevent
accidental
erasure.
4.
Volume
Control
is
used
to
adjust
the
recording
level
and
volume
of
the
reproduced
sound.
It
is
not
connected
to
the
Power
Switch.
5.
V.U
Meter/Battery
Voltmeter
functions
a;
a
dual
purpose
meter.
With
the
Operating
Lever
in
the
RECORD
position,
the
meter
functions
as
a
V.U
Mter
and
indicates
the
recording
level.
In
the
PLAYBACK
position,
the
meter
functions
as
a
Voltmeter
and
measures
the
Voltage
output
of
the
batteries.
6.
The
Model
RQ-152S
is
equipped
with
a
self-omtained
AC
power
supply
and
a
unique
relay
circit
which
allows
automatic
switching
from
AC
to
Battery
power
and
vica-versa.
S4
is
the
AC
to
Battery
switch
contacts
and
normally
is
in
the
Battery
position.
When
AC
power
i;
applied,
S4
contacts
are
switched
to
the
AC
positio,
by
the
Relay.

TAPE
TRANSPORT
OPERATION
PLAYBACK
up
Reel
Tabke
Takeup
Reel
Table
Guide
Pulley
(Guide
Puiley:$))
Clutch
Lever
(Gam
Plate)
Clutch
Lever
Supply
Reel
Table
(Beit
Retarn
Stopper
Lever)
~
An?
2
een
i
FF
Roller
Lever)
Rubber
of
Belt
Return)
/
[af
4
Stopper
Lever
(N9
Rewind
Pulley
Sub
F.F.Lever
When
the
operator
is
adjusted
to
playback
condition
by
turning
the
Operating
Lever,
the
following
movements
occur
at
one
time
to
feed
tape
at
a
constant
speed
for
obtaining
playback.
1.
Clutch
Lever
acts,
power
source
is
switched
on,
Motor
Lifter
is
freed
from
suppression,
Motor
is
pressed
on
Flywheel,
and
motor
rotation
is
transmitted
to
Flywheel.
2.
Rotation
transmitted
to
Flywheel
turns
Takeup
Reel
Table
by
Takeup
Belt
and
Sub
Takeup
Belt.
3.
Pinch
Roller
Lever
acts
and
makes
Pinch
Roller
stuck
to
Capstan
Shaft.
With
rotation
of
Capastan
Shaft
which
is
conjointly
shaft
of
Flywheel,
Pinch
Roiler
is
rotated
to
feed
tape
at
a
constant
speed.
4
Pinch
Roller
Lever
moves
pad
arm
and
Pinch
pad
to
Head.
5.
Pinch
Roller
Lever
moves
Sub
F.F.
Lever
and
F.F.
Roller
Lever,
and
separates
F.F.
Roller
from
Takeup
Reel
Teble.
6.
Rewind
Lever
is
actuated,
Rewind
Pulley
is
separated
from
Flywheel,
and
playback
circuit
is
switched
on.
7.
Sub
Clutch
Lever
operates,
moves
Belt
Return
Stopper
Lever
and
separates
rubber
of
Belt
Return
Stopper
Lever
from
Supply
Reel
Teble.
8.
Catch
Lever
operates
and
fixes
operator.
RECORD
Recording
Lever
Recording
Cam
Push
the
Button
for
recording,
turn
the
Operating
Lever,
and
adjust
the
operator
to
recording
position.
Then,
same
operations
as
in
playback
begin
simultaneously
and
tape
is
fed
at
a
constant
speed.
At
the
same
time,
Recording
Lever
is
moved
with
Recording
Cam,
Slide
Switch
is
actuated,
electric
circuit
is
changed
over
to
recording
condition,
and
thus
recording
is
obtained.
FAST
FORWARD
(F-F.Roller)
|
Guide
Pulley
L)
{
F.F.Roller
Lever}
Takeup
Reel
Table
Friction
Pulley:
AF.
Pulley
(Fivwheel)
-~
(Pinch
Rolier
Lever
Pa
oD
(FF
Lever)
-
Cam
Plate)

Takeup
Reel
Table
F.F.Roller
Sub
Takeup
Belt
Friction
Pulley
Push
the
F.F.
Button,
turn
the
operating
Lever,
and
adjust
the
operator
to
Fast
Forward
condition.
Then
the
following
operations
begin
simultaneously
for
F.F.
of
tape.
1.
Clutch
Lever
operates,
power
source
is
switched
on,
Motor
Lifter
is
freed
from
suppression,
Motor
is
pressed
on
Flywheel
and
motor
rotation
is
transmitted
to
Flywheel.
2.
Rotation
transmitted
to
Flywheel
turns
Friction
Pulley
under
Takeup
Reel
Table
by
Belt,
the
rotation
is
transmitted
to
F.F.
Roller
and
its
rotation
to
F.F.
Pulley.
As
F.F.
Pulley
is
fixed
at
Takeup
Reel
Table,
the
Reel
Table
quickly
rotates.
3.
Sub
Clutch
Lever
operates,
moves
Beit
Return
Stopper
Lever,
and
separates
Rubber
of
Belt
Return
Stopper
Lever
from
Supply
Reel
Table.
4.
Catch
Lever
works
and
fixes
operator.
REWIND
Supply
Reel
Table
Rubber
of
Belt
Return
Stopper
Takeup
Reel
Table
Flywheel
(Takeup
Lever)
Turn
the
Operating
Lever
for
putting
the
operator
to
rewinding
condition.
Then
the
following
operations
simultaneously
occur,
and
the
tape
is
quickly
rewound.
1.
Catch
Lever
operates,
power
source
is
switched
on,
Motor
Lifter
is
freed
from
suppression,
Motor
is
pressed
on
Flywheel,
and
Motor
rotation
is
transmitted
to
Flywheel.
NO
.
Rotation
transmitted
to
Flywheel
is
further
transmitted
to
Rewind
Pulley
which
is
pressed
on
Flywheel,
and
Supply
Reel
Table
is
turned
to
rewinding
direction
by
Rewind
Belt.
3.
Takeup
Lever
operates,
separates
Sub
Takeup
Lever,
F.F.
Roller
Lever
and
push
F.F.
Roller
from
Takeup
Reel
Teble,
putting
the
Takeup
Reel
Table
in
freed
condition.
4.
Sub
Clutch
Lever
operates,
moves
Belt
Return
Stopper
Lever,
and
separates
Rubber
of
Belt
Return
Stopper
from
Supply
Reel
Teble.
5.
Catch
Lever
operates
and
fixes
operator.

STOP
(FF
Roller)
‘Supply
Reet
Table
(Takeup
Reel
Table)
_-
(Sub_Takeup
Beit)
Sub
Clutch
Lever
E
Pinch
Roller
eo
Se)
AAAY
__
Spring
/
a
(Catch
Lever
Spring)
(FF
Lever)
|
S€
Fleer
(Clutch
Lever
From
the
status
of
Record/Playback,
quick
feed
or
Rewind-
ing,
if
the
Operating
Lever
is
turned
and
the
operator
is
adjusted
to
stopping
condition,
the
following
movements
occur
simultaneously,
power
source
is
switched
off,
and
operation
come
to
a
stop.
1.
Clutch
Lever
works,
power
source
is
switched
off,
Motor
Lifter
is
suppressed,
and
Motor
is
separated
from
Fly-
wheel.
2.
In
case
of
stopping
from
Record/Playback,
Rewind
Lever
works,
circuit
for
Record/Playback
is
cut
off,
and
Rewind
Pulley
is
pressed
on
Flywheel.
Pinch
Roller
Lever
works,
Pinch
Roller
is
separated
from
Capstan
Shaft,
and
the
Pinch
Roller
Lever
also
actuate
pad-up
for
separating
pad
from
bed.
By
operation
of
Pinch
Roller
Lever,
Sub
F.F.
Lever
and
F.F.
Roller
Lever
are
actuated
to
press
F.F.
Roller
on
Takeup
Reel
Teble
which
serves
as
a_
brake.
Sub
Clutch
Lever
and
Belt
Return
Stopper
Lever
work
to
press
Rubber
of
Belt
Return
Stopper
of
Supply
Reel
Table
for
braking.
3.
In
case
of
stopping
from
Fast
Forward,
Rewind
Lever
works,
and
Rewind
Pulley
is
pressed
on
Flywheel.
Sub
Clutch
Lever
and
Belt
Return
Stopper
Lever
work
to
press
Rubber
of
Belt
Return
Stopper
on
Supply
Reel
Table
for
braking.
4.
In
case
of
stopping
from
rewinding,
Takeup
Lever
and
Sub
Takeup
Lever
work
to
press
F.F.
Roller
on
Pulley
of
Takeup
Reel
Table.
Braking
is
effected
when
F.F.
Roller
comes
in
touch
with
Pulley
of
Takeup
Reel
Table.
MECHANICAL
ADJUSTMENTS
PINCH
ROLLER
TENSION
Pinch
\
Roller
(
Pinch
Roller
Lever)
Fig.
1
Instruments
Required:
Spring
Scale;
Strong
Twine.
Measurement:
Refer
to
Fig.
1.
1.
Load
the
tape
as
in
the
case
of
Playback,
and
set
the
Tape
Recorder
in
Record
or
Playback
mode.
2.
Hang
a
loop
of
twine
on
the
Pinch
Roller
Shaft
and
hook
the
Spring
Scale
on
the
other
end
of
the
loop.
3.
Pull
the
Spring
Scale
in
the
direction
of
a
line
connecting
the
centers
of
the
Capstan
and
Pinch
Roller
Shaft,
and
Pinch
Roller
Shaft,
and
increaring
the
pull
slowly
read
the
scale
at
a
point
where
the
tape
stops
moving
by
the
pull.
4.
The
standard
pressure
of
the
Pinch
Roller
Shaft
should
be:
1-7/8
ips..........ceeeee
5.3~7.40zs.
(150~210
g)
3-3/4
ips...
5.7~8.5
ozs.
(160~240
g)
ADJUSTMENT
Adjust
the
Pinch
Roller
Spring
to
the
standard
pressure
accordingly.
TAPE
PAD
PRESSURE
Tension
Gauge

Tape
Pad
Arm
Spring
Fig.
3
Instrument
Required:
Tention
Gauge
Measurement:
Refer
to
Fig.
2.
and
3.
1.
Set
the
Tape
Recorder
in
Playback
mode
without
loading
the
tape.
2.
Hook
the
Tension
Gauge
on
the
Tape
Pad
for
the
Record/Playback
Head
at
the
center
and
lightly
pull
the
gauge
so
that
the
pad
parts
from
the
head.
Take
the
reading
just
at
the
point
where
the
pad
parts
from
the
head.
3.
The
standard
pressure
of
the
pad
for
the
Record/
Playback
Head
should
be:
0.2~0.50zs.
(6~14g)
ADJUSTMENT
Adjust
the
Tape
Pad
Arm
Spring
to
the
standard
pressure.
WINDING
TORQUE
FOR
PLAYBACK
AND
FAST
FORWARD
Takeup
Reel
}
ee
Tape.
Flywheel)
>
Tape)-
ere
U
Clywheel)
7
ay
eo
ae
)
‘Tension’
[eae
z
|
Cressure
Roller
Le
(Splicing
Tape)
7
(~
\
Gauge
Fig.
4
Instruments
Required:
Tension
Gauge;
Splicing
Tape
Measurement:
Refer
to
Fig.
4.
1.-Make
a
loop
of
the
tape
(5”
reel)
end,
fasten
the
looped
end
with
the
splicing
tape,
and
put
the
reel
on
the
Takeup
Reel
Table.
2.
Hook
the
Tension
Gauge
on
the
loop
and
pull
out
6
inches
or
so
of
the
tape
end.
3.
Set
in
the
Playback
or
Fast
Forward
mode,
and
pull
the
Tension
Gauge
in
the
direction
of
winding
keeping
the
pace
with
the
moving
tape
until
the
reading
of
the
Tension
Gauge
remains
constant
at
which
point
take
the
reading.
Repeat
this
for
several
times
and
take
the
average
for
a
correct
torque.
4.
The
above
test
should
be
made
with
5”
tape
reel
with
full
load.
5.
The
standard
torque
should
be:
Playback..............
0.53~0.71l
ozs.
(15~20g)
Fast
Forward.........
0.7l
ozs.
~
(20g~)
ADJUSTMENT
Reel
Table
Decorative
\
Screw
J
Reel
Table
Spring
Reel
Table
F.F.Fiber
Washer
F.F.F
iber
Washer
Friction
Washer
rT
Friction
=o
Friction
Pulley
Friction
Pulley
Nut
Tetoron
Washer
Fig.
5
Adjust
the
torque
with
the
Friction
Spring
on
the
Takeup
Reel
Table.
If
the
torque
is
too
strong,
loosen
the
Friction
Spring,
and
if
too
weak
tighten
it.
If
the
Friction
Washer
gets
oily
clean
it
immediately
to
prevent
slip.
If
the
tension
of
the
Takeup
Belt
is
weakened
the
winding
torque
drops.
BACK-TENSION
FOR
PLAYBCK
ee
Tension
Gauge
Fig.
6

Instruments
Required:
Tension
Gauge;
Splicing
Tape
Measurement:
Refer
to
Fig.
6.
1.
Measure
the
back-tension
in
the
manner
similar
to
the
winding
torque
for
Playback,
but
in
this
case
by
pulling
the
tension
gauge
on
the
5”
tape
loaded
on
the
Supply
Reel
Table.
2.
Measure
the
back-tension
for
Playback
with
5”
reel
fully
loaded.
3.
The
standard
back-tension
should
be:
0.05~0.25
ozs.
(1.5~6.5
g)
ADJUSTMENT
Too
strong
back-tension
may
be
caused
by
the
accumu-
lation
of
dust
on
the
turning
parts
of
the
Rewind
Pulley
and
Supply
Reel
Table,
requiring
occasional
cleaning.
Too
weak
back-tension
may
be
due
to
the
weakened
tension
of
the
Rewind
Belt
and
it
should
preferably
be
replaced
then.
MOTOR
SHAFT
PRESSURE
AGAINST
FLYWHEEL
~~
Motor
Spring
;
(Tension
Gauge)
(Flywheel)
Fig.
7
Instrument
Required:
Tension
Gauge
Measurement:
Refer
to
Fig.
7.
1.
Load
the
tape
and
set
the
Tape
Recorder
in
Playback
mode.
Hook
the
Tension
Gauge
on
the
end
of
the
Motor
Spring
attached
to
the
Motor
(see
the
drawing).
2.
Pull
the
Tension
Gauge
opposite
to
the
action
of
the
spring
and
increase
the
pull
until
the
Flywheel
and
the
Motor
Pulley
part
from
each
other
at
which
point
take
the
reading.
The
tape
stops
then.
3.
The
standard
pressure
for
the
Motor:
2.5~3.5
0zs.
(70~100
g)
ADJUSTMENT
Adjust
the
motor
spring
for
correct
pressure.
HEAD
ADJUSTMENTS
Relative
positions
of
heads
and
tape,
Adjust
the
relative
positions
of
Record/Playback
head
and
Erase
head
as
shown
in
the
drawing.
Improper
relative
positions
of
these
heads
causes
imperfect
erasure
and
cross-talk,
and
the
slightest
displacement
of
the
mounting
may
lead
to
the
lowe
position
of
the
head
in
respect
of
the
tape.
Close
adjustment
is
therefore
necessary.
0.04~0.16
O~0.12
Erase
Head
Record/Playback
Head
Fig.
8
Unit:
Inch
-
HEAD
AZIMUTH
ADJUSTMENT
Slit
Head
Adjustment
Screw
Deflection
of
the
angle
of
the
head
slit
from
vertical
will
deteriorate
high
frequency
characteristic
on
playing
back
the
tape
with
recording
made
with
another
Tape
Recorder,
while
it
is
not
so
important
with
the
tape
recorded
and
played
back
on
one
and
the
same
Tape
Recorder.
The
higher
the
deflection,
the
poorer
the
poorer
the
perfomance.
To
prevent
this
trouble,
the
slit
of
the
head
should
be
maintained
precisely
at
right
angles
to
the
path
of
the
tape.
Connect
the
Vacuum
Tube
Voitage
Meter
(V.T.V.M.)
with
8
©
Resistor
in
parallel
to
the
Monitor
Jack,
and
playback
the
standard
alignment
tape
(tape
with
recording
of
signals,
3,000
cps.
at
3-3/4
ips.
on
vertical
slit
).
Adjust
the
angle
of
the
head
slit
to
be
precisely
vertical
by
turning
the
adjusting
screws
so as
to
obtain
the
maximum
output
signal.
When
the
Record/Playback
Head
is
replaced
it
must
be
adjusted
as
described
above.
TREATMENT
AFTER
ADJUSTMENT
Lacquer-lock
all
the
holding
and
adjustng
screws
of
the
heads
after
the
adjustment
has
been
completed.

AMPLIFIER
ADJUSTMENTS
RECORD
BIAS
FREQUENCY
Recorb/
Playback
Head
Misety
=
Lissajous
Figure
Fig.
10
Instruments
Required:
Oscilloscope;
A.F.
Oscillator;
100
Q
Resistor.
Measuring
Circuit:
Refer
to
Fig.
10.
Connect
a
100
©
Resistor
in
series
to
the
ground
side
of
the
Record/Playback
Head,
and
compare
the
frequency
of
voltage
at
both
ends
of
the
resistor
with
the
frequency
of
the
A.F.
Oscillator.
To
compare,
make
the
oscilloscope
form
a
Lissajou’s
Figure,
and
bringing
the
frequency
of
the
A.F.
Oscillator
close
to
50
kc,
watch
the
point
at
which
the
circle
of
the
Lissajou’s
Figure
stands
still
which
is
the
frequency
to
be
measured.
The
standard
frequency
is:
30~40
kc.
If
any
frequency
without
the
above
range
occurs,
turn
slowly
the
core
of
the
Oscillator
Transformer
(T3)
until
the
frequency
remains
within
the
range,
tuning
with
the
frequency
of
the
A.F.
Oscillator.
RECORD
BIAS
CURRENT
RECORD
PLAYBACK
RECORD
MODE
Fig.
11
Instruments
Required:
V.T.V.M.;
100
Q
Resistor
Measuring
Circuit:
Refer
to
Fig.
11.
After
adjusting
Record
bias
frequency,
connect
the
V.T.V.M.
to
both
ends
of
100
Q
Resistor,
and
confirm
if
the
Record
bias
current
is
0.9~1.1mA.
Voltage
at
both
ends
of
100
Q
Resistor
is
0.09~0.11
V.
If
the
Record
bias
current
is
without
the
above
range,
correct
it
by
varying
the
Record
bias
frequency
within
the
range
of
25~35
kc.
When
all
the
measurement
is
finished
the
original
wiring
on
the
heads
should
be
restored.
Care
Should
be
taken
to
keep
correct
polarity
so
as
to
avoid
distorsion
noise.
ERASE
CURRENT
Erase
Head
RECORD
MODE
D.C
Milliammeter
Fig.
12
Instruments
Required:
D.C.
milliammeter
Measuring
Circuit:
Refer
to
Fig.
12.
Connect
thh
D.C.
milliammeter
in
series
to
the
ground
side
of
the
Erase
head.
When
the
Tape
Recorder
is
set
in
Record
mode,
D.C.
milliammeter
will
indicate
Erase
current.
The
standard
Erase
current
is
between
4~8
mA.
RECORDING
LEVEL
=2CORD
/PLAYBACK
(7
HEAD
RECORDING
AMPLIFIER
Fig.
13
Instruments
Required:
A.F.
Oscillator;
Attenuator,
V.T.V.M.;
600
©
and
100
©
Resistors
Measuring
Circuit:
Refer
to
Fig.
13.
Remove
the
soldered
lead
wire
from
No.
3
of
he
Oscil-
lator
Transformer
(T3)
and
stop
the
bias
oscilation.
Set
the
Tape
Recorder
in
Record
mode
and
turn
tle
volume
control
knob
to
the
maximum.
Measure
the
recording
level
necessary
to
feed
0.05
mA
to
the
Record-head
from
the
input
jack.
Connect
a
100
Q
Resistor
to
the
ground
site
of
the
Record
head,
and
adjust
the
attenuator
so
that
the
voltage
at
both
ends
of
the
resistor
is
maintained
at
0.)5
V,
and
confirm
if
its
value
is
—64.5~—74.5
db.
Also
cnfirm
the
indication
of
the
V.U.
meter
which
should
be
—3~
+3
db.

TROUBLE
SHOOTING
GUIDE
1.
DEFECTIVE
RECORD/PLAYBACK
DEFECTIVE
OPERATION
OF
MECHANISM
MOTOR
FAILS
TO
ROTATE
MOTOR
ROTATES
MOVES
ABNORMAL
NOISE
OR
LARGE
WOW,
FLUTTER
OPERATING
LEVER
FAILS
TO
MOVE
OPERATING
LEVER
FLYWHEEL
DEFECTIVE
CAM
MECHANISM
BATTERY
CONSUMED
SHAFT
BURNT
DEFECTIVE
MOTOR
SPRING
DEFECTIVE
OPERATION
OF
MOTOR
LIFT
FUNCTIONING
OF
ene
SWITCH
-2
SHAFT SHORT
OF
OIL
SLACKENING
|
OF
FLYWHEEL
SHAFT
DEFECTIVE
DEFECTIVE
PINCH
PRESS
OF
ROLLER
PINCH
ROLLER
RO
RING
FRICTION
PULLEY
BURNT
REEL
TABLE
UNEVEN
SHAFT
BURNT
WINDING
FORCE
SHORT
OF
OIL
DEFECTIVE
OPERATION
OF
SUPPLY
PULLEY
BRAKE
REWIND
AND
COUNTER
BELT
OUT
OF
PLACE
DEFECTIVE
MOTOR
RUBBER
BELT
BROKEN,
DETERIORATED
OR
OUT
OF
PLACE
PINCH
ROLLER
DEFORMED
DEFECTIVE
OPERATION
OF
F.F.
ROLLER
LEVER
COUNTER
SHAFT
BURNT
RELAY
PULLEY
&
GUIDE
PULLEY
BURN
FLYWHEEL
SHAFT
SLACKENED
TAKEUP
LEVER
MOTOR
PULLEY
DEFORMED
OR
STAINED
WITH
OIL

TROUBLE
SHOOTING
GUIDE
2.
DEFECTIVE
REWIND
DEFECTIVE
OPERATION
OF
MECHANISM
TAKEUP
REEL
TABLE
URNT
OR
SHORT
OF
OIL
@
REEL
TABLE
SHAFT
BENT
OR
B
Cc
mo)
2
4
REWIND
REEL
TABLE
FAILS
TO
ROTATE
TAKEUP.
BELT
FAILS
Ez
O
COME
OFF
-
F.F.
ROLLER
FAILS
TO
COME
OFF
SUPPLY
REEL
TABLE
OR
RUNNING
SHORT
OF
OIL
REWIND
BELT
BROKEN
OR
DETERIORATED
EWIND
(PULLEY
BURNT
OR
REWIND
IS
NOT
SUPPLY
PEEL
TABLE
OBTAINABLE
FAILS
TO
ROTATE
EFECTIVE
PRESS
OF
DEFECTIVE
REWIND
EWIND
PULLEY
LEVER
NG
COUNTER
BELT
OUT
OF
PLACE
COUNTER
SHAFT BURNT
Ss
PPLY
PULLEY
BRAKE
FAILS
COME
OFF
ERATION
OF
nO
m
al
m
cas
40
>m
:
zn
mm
al]
jco
4}
fos
r<
nm
°
mg
mm
ie)
nw
2g
U
TO
MOTOR
FAILS
TO
ROTATE
DEFECTIVE
MOTOR
DEFECTIVE
FAST
FORWARD
DEFECTIVE
OPERATION
OF
MECHANISM
REEL
TABLE
SHAFT
BENT
OR
BURNT
TAKEUP_
BELT
BROKEN
OR
DETERIORATED
ECTIVE
F.
F.
ROLLER
ER
a)
ay
2
Zz
ra)
INSUFFICIENT
E.F.
ROLLER_DEFORMED
OR
WINDING
FORCE
STAINDE
WITH
OIL
DEFECTIVE
PRESS
OF
FF.
ROLLER,
SHAFT
AND
IF.
F.
ROLLER
LEVER
BENT
TAKEUP
REEL
TABLE
ROTATES
[ote)
co
an
|
Zz
o3]]
ar
7m
Ps)
Uv
c>
P2)/,am
oOo];
|
iC
me
m
>
=
1s¢]
=
Zz
m
io]
ie9]
m
ag
4
COUNTER
SHAFT
BURNT
Y
BRA
PPLY
PULLE
KE
ABNORMAL
RECORD/PLAYBACK
DEFECTIVE
OPERATION
OF
ELECTRIC
CIRCUIT
cere
ATTAINED
ELAY
RELAY
VIBRATES
WHEN
HALTING
AT
A.C

TROUBLE
SHOOTING
GUIDE
3.
ABNORMAL
PLAYBACK
DEFECTIVE
OPERATION
OF
ELECTRIC
CIRCUIT
DISTORTION
iS
LARGE
AND
SOUND
!S
SMALL
NO
SOUND
(S
HEARD
PLAYBACK
IS
OBTAINABLE,
BUT
SOUND
IS
DISTORTED
LOUD
NOISE
LOUD
HUMMING
CHECK
VOLTAGE
AND
CURRENT
AT
EACH PART
NO
CLICK
AT
Tr-1
BASE
DEFECTIVE
A.C.
POWER
SOURCE
DEFECTIVE
MOTOR
|MPERFECT
GLAND
PACKING
OF
AMPIFIER
WIRE
-
BREAKAGE
OF
CAPACITOR
DEFECTIVE
CAPACITY
OR
WIRE
-
BREAKAGE
OF
CAPACITOR
NO
SOUND
1S
HEARD
DUE
TO
ABNORMAL
VOLTAGE,
OR
LARGE
DISTORTION
VOLTAGE
|S
NORMAL,
BUT
SOUND
1S
SMALL
TONE
CONTROL
1S
DEFECTIVE
TONE
CONTROL
1S
INEFFECTIVE
VOLTAGE
{tS
DEFECTIVE
NORMAL,
BUT
NO
SOUND
IS
HEARD
DEFECTIVE
DEFECTIVE
SPEAKER
PLAYBACK
HEAD
DEFECTIVE
SLIDE
SWITCH
$1-1,$1-2
DEFECTIVE
SLIDE
SWITCH
$1-1,
$1-2
SHORT
CIRCUIT
OF
CAPACITOR
c3
DEFECTIVE
CARACITY
OR
WIREBREAKAGE
OF
CAPACITOR
c2
INPUT
TRANS.-
FORMER
T-1
OUTPUT
TRANS
DEFECTIVE
CAPACITOR
C3,C6,C9
DEFECTIVE
INPUT
TRANS,
FORMER
T-1
DEFECTIVE
DEFECTIVE
SPEAKER
DEFECTIVE
CAPACITOR
C12,
Ci3
DEFECTIVE
RESISTOR
R5,
R6
DEFECTIVE
CAPACITY
OR
WIRE
BREAKAGE
OF
DE
COUPLING
CAPACITOR
€10,C11,
C1
DEFECTIVE
RESISTOR
R5,R6,R7
DEFECTIVE
VARIABLE
RESISTOR
VR-1
SLIDE
SWITCH
$1-2
es
i
DEFECTIVE
INPUT
TRASFORMER
T-1
DEFECTIVE
OUTPUT
TRANSFORMER
RESISTOR
R4,R11
R17,R18,
R22
DEFECTIVE
BASE
BREEDER
RESISTOR
R9,R12,
R15,R20,
R21,
DEFECTIVE
DE
COUPLING
RESISTOR
R12,R19,
R23
DEFECTIVE
ISOLATION
OR
SHORT
;
CIRCUIT
OF
CONNECTING
CAPACITOR
c2,C7,
C8,
SHORT
CIRCUIT
OF
EMITTER
CONDENSER
C3,
C6,
C9
DEFECTIVE
ISOLATION
OR
SHORT
CIRCUIT
OF
CAPACITOR
c5,C7,
Cl2,C13
DEFECTIVE
ISOLATION
OR
SHORT
CIRCUIT
OF
DE
COUPLING
CONDENSER
e1,C010,C11
DEFECTIVE
TRANSISTOR
Tr-1,
Tr-2,
Tr-3,
Tr-4,
Tr-5,
DEFECTIVE
THERMISTOR

TROUBLE
SHOOTING
GUIDE
4.
ABNORMAL
RECORD
DEFECTIVE
OPERATION
OF
ELECTRIC
CIRCUIT
IMPERFECT
ERASING
RECORDING
1S
OBTAINABLE,
BUT
SOUND
tS
DISTORTED
TONE
CONTROL
!S
DEFECTIVE
WHEN
RECORDING
DEFECTIVE
ERASE
HEAD
BATTERY
CONSUMED
4S
HtGH
FREQUENCY
BIAS
OSCILLATION
ABNORMAL
?
CHECK
VOLTAGE
AND
CURRENT
OF
EACH
PART
DEFECTIVE
SLIDE
SWITCH
RECORDING
1S
NOT
OBTAINABLE
LEVEL
METER
SWINGS
WHEN
INPUT
1S
GIVEN
LEVEL
METER
DOES
NOT
SWING
THOUGH
RECORDING
OBTAINABLE
BUT
LEVEL
METER
DOES
NOT
SWING
1S
RECORDING
IS
OBTAINABLE,
BUT
NO
SOUND
MONITORING
IS
ATTAINABLE
LOUD
NOISE
DEFECTIVE
RESISTOR
R29
DEFECTIVE
DIODE
OA-70
DEFECTIVE
SLIDE
SWITCH
S1I-3
DEFECTIVE
METER
LEVEL
METER
SWINGS
HIGH
FREQUENCY
BIAS
CURRENT
1S
NORMAL
LITTLE
OR
NO
ELECTRIC
CURRENT
OF
HIGH
FREQUENCY
BIAS
CHECK
VOLTAGE
OF
OSCILLATION
CIRCUIT
DEFECTIVE
RESISTOR
R24
BREKAGE
OF
THIRD
COIL
OF
OUTPUT
TRANSFORMER
T-2
BREAKAGE
OF
SECONDARY
COIL
OF
OSCILLATION
coIL
T-3
NO
CLICK
AT
BASE
OF
TRANSISTOR
Tr-1
CLICK
IS
HEARD
AT
BASE
OF
TRANSISTOR
Tr-l
DEFECTIVE
SLIDE
SWITCH
$1-6
DEFECTIVE
RESISTOR
R30
DEFECTIVE
SWITCH
S7
DEFECTIVE
DEFECTIVE
DEFECTIVE
RECORD RECORD
HEAD
HEAD
DEFECTIVE
PATTING
OF
DEFECTIVE
RECORDING
OSCILLATION
coIL
T-3
OEFECTIVE
RESISTOR
DEFECTIVE
R24
CAPACITOR
c14,cC1ig9
DEFECTIVE
SLIDE
SWITCH
$1-1,
81-2
DEFECTIVE
TRANS!ISTOR
TR-6
ABNORMAL
DEFECTIVE
RESISTOR
R25,
R26,
R27
DEFECTIVE
CAPACITOR
c16,C18
HOMVOMO<
-D
UMxC-M>Coom
MNOYTnOArCIN
PmmM<mMIaAMM
ROVMQ
MPaD
MAAPAVZOA
DEFECTIVE
OSCILLATION
coIL
T-3
DEFECTIVE
MiCROPHONE
DEFECTIVE
DEFECTIVE
SLIOE
SWITCH
$1-5
WIRE-BREAKAGE
OF
CAPACITOR
c2
SHORT
CIRCUIT
OF
CAPACITOR
C3
PLAYBACK

RESISTORS
Ref.
No.
rw)
ON
A
aAtWON
ee
a
ee
ee
ee
NOOaP
WN
—-
OC
DO
mann
nDnDA
RAR
WTDAWDADADAADAAAAWRDAADAWADAAWAA
WD
DW
OWWNNNNNNNNNDN
=
N=
FO
OOAON
A
ADARWNH
—
CO
TO
&
w
w
CAPACITORS
A9NNANAANNDNNDANDNNA
N—-OCANAGAORND
=
REPLACEMENT
PARTS
LIST
as
a
whole
assembly.
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resisjor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Carbon
Resistor
Description
22KQ
1/4
Watt
10KQ
1/4
Watt
120
Q
1/4
Watt
1.2KQ
1/4
Watt
2.2KQ
1/4
Watt
1.2KQ
1/4
Watt
270
Q
1/4
Watt
33K
Q
1/4
Watt
100
KQ
1/4
Watt
27KQ
1/4
Watt
2.2KQ
1/4
Watt
1.2KQ
1/4
Watt
33
KQ
1/4
Watt
560
Q
1/4
Watt
10KQ.
1/4
Watt
820
QO,
1/4
Watt
330
Q
1/4
Watt
10
Q
1/4
Watt
270
Q
1/4
Watt
1.5KQ
1/4
Watt
100
Q
1/4
Watt
2.2.Q
1/4
Watt
47
Q.
1/4
Watt
100KQ
1/4
Watt
4.7
QO,
1/4
Watt
10KQ.
1/4
Watt
47
KQ
1/4
Watt
25KQ,
1/4
Watt
270
Q
1/4
Watt
10
Q
1/2
Watt
560
Q
1/4
Watt
270
Q
1/4
Watt
100KQ
1/4
Watt
Electrolytic
Capacitor
50
pF
Electrolytic
Capacitor
1
pF
Electrolytic
Capacitor
30
pF
Polystyrene
Capacitor
0.1
YF
Polystyrene
Capacitor
0.05
pF
Electrolytic
Capacitor
30
pF
Electrolytic
Capacitor
10
fF
Electrolytic
Capacitor
0.5
LF
Electrolytic
Capacitor
50
uF
Electrolytic
Capacitor
50
fF
Electrolytic
Capacitor
500
pF
Polystyrene
Capacitor
0.01
pF
WV
WV
WV
WV
WV
WV
WV
wv
WV
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
TOV
10V
6V
6V
10V
10V
6V
10V
12V
ATTENTION:
Please
order
Replacement
Parts
according
to
this
Replacement
Parts
List.
The
parts
which
are
not
listed
up
here
will
not
be
supplied.
So
a
part
in
an
assembly
has
to
be
ordered
Parts
No.
QRD-14TRK223
QRD-14TRK103
QRD-14TRK121
QRD-14TRK122
QRD-14TRK222
QRD-14TRK122
QRD-14TRK271
QRD-14TRK333
QRD-14TRK104
QRD-14TRK272
QRD-14TRK222
QRD-14TRK122
QRD-14TRK333
QRD-14TRK561
QRD-14TRK103
QRD-14TRK821
QRD-14TRK331
QRD-14TRK100
QRD-14TRK271
QRD-14TRK152
QRD-14TRK101
QRD-14TRK222
QRD-14TRK470
QRD-14TRK104
QRD-14TRK4R7
QRD-1
4TRK103
QRD-14TRK473
QRD-14TRJ253
QRD-14TRK271
QRD-12TRK100
QRD-14TRK561
QRD-14TRK271
QRD-14TRK104
QCE-A10V50
QCE-AI10V1
QCE-A6V30
QCQ-K05104M
QCQ-K05503M
QCE-A6V30
QCE-A10V10
QCE-A1OVOR5S
QCE-A6V50
QCE-A10V50
QCE-A12V500
QCQ-K05103M

Ref.
No.
Description
Parts
No.
Cc
13
Polystyrene
Capacitor
0.01
yF
QCQ-K05103M
Cc
14
Polystyrene
Capacitor
0.001
fF
QCQ-K05102M
C15
Electrolytic
Capacitor
500
uF
WV
12V
QCE-A12V500
C16
Electrolytic
Capacitor
3
uF
WY
12V
QCE-A12V3
Cc
18
Polystyrene
Capacitor
0.01
uF
QCQ-K05103M
C19
Polystyrene
Capacitor
3900
PF
QCQ-K05392M
C
21
Polystyrene
Capacitor
820
PF
QCQ-K05821M
C
22
Electrolytic
Capacitor
100
uF
WY
10V
QCE-A10V100
TRANSISTORS
Ref.
No.
Description
Parts
No.
Ref.
No.
Description
Parts
No.
Tro
Transistor
2SB
173
E
8
A.C.
Power
Cord
Bushing
QTD-1126
Tr
2
Transistor
2SB
175
E
9
insulating
Paper
QBK-1039
Tr
3
Transistor
2SB
175
E10
Circuit
Board
Assembly
QEI-0083
Tr
4
Transistor
25B
178
E11
Mic.
&
Remote
Jack
QUA-0214
Tr
5
Transistor
2SB
178
E12
M-3
Jack
QJA-0110
Tr
6
Transistor
2SB
172
E
13
R/P
Selector
Switch
Spring
(long)
QBT-1136
VARIABLE
RESISTORS
E
14
R/P
Selector
Switch
Spring
VR
1
Voriable
Resistor
10KQ.
QVVR-600A10KC
ponory:
SRIEN
97
VR
2
Voriable
Resistor
10KQ.
—-
QVVR-1606G10KC
Bip.
eee
QMG-T018
E
16
Screw,
Round
Head
M2.6¢«
3
QHM-226
x
5N3
DIODES
E
17
Fuse
QJF-1001
E
18
Fuse
Holder
QTF-1009
DI
slliesp-Diede
pelts
E19
Voltage
Selector
Switch
Angle
QTT-1222
D
2
Silicon
Diode
FR-1A
D
3
Diode
OA-70
MECHANICAL
PARTS
TRANSFORMERS
M
1
Reel
Table
Screw
QHQ-1048
M
2
Reel
Table
Spring
QBS-1016
T
J
Input
Transformer
QLA-0113
M
3
Reel
Table
Washer
QBI-3025
T
2
Output
Transformer
QLA-0322
M
4
Reel
Table
Assembly
QxP-0117
T
3
Oscillator
Transformer
QLB-0119
M
5
Paper
Washer
4X8
0.5
QBK-7048
T
4
Power
Transformer
QLP-0365
M
6
Screw,
Round
Head
M2¢x6
QHM-120%
6U3
M
7
Screw,
Round
Head
M2¢x10
QHM-120
x
10U3
SWITCHES
M
8
Flat
Washer
W2
¢
QWP-2022U3
S$
1
Record,’
Playback
selector
M
9
Head
Adjustment
Spring
QBC-1026
Switch
ESD-0162
M10.
Screw,
Round
Head
M3
¢x5
QHM-230¥
5U3
S$
2
Power
ON/OFF
Switch
QSB-0132
M11.
Capstan
Holding
Screw
QHQ-1032
Ss
3
Stop
Switch
QSB-0132
M12
Capstan
Sleeve
QMS-1090
S
4
Relay
QSK-0104
M
13
Paper
Washer
580.25
QBK-7053
S
§
Rewind
Switch
QSB-0141
M
14
Stop
Ring
E4¢
QNS-404U3
S
6
Rewind
Switch
QSB-0141
M15
Flywheel
Shaft
Metal
QMM-1048
Ss
7
Sound
Monitor
Switch
M16
Pinch
Roller
Spring
QMN-1050
Ss
8
Voltage
Selector
Switch
QSS-101]
M17
Plastlc
Washer
4x7
X0.15
QBJ-3009
M
18
Oil
Seal
QBJ-1059
THERMISTORS
M
19
Pinch
Roller
QDP-1053
SM
Thermistor
TD6-A050
QVM-500A
M
20
Paper
Washer
470.5
QBK-7045
M
21
Stop
Ring
E3
¢
QNS-304U3
ELECTRICAL
PARTS
M
22
Pinch
Roller
Rubber
Bushing
QBG-1077
E
1
—
Record/Playback
Head
WY-011
Mas
hed,
Aim
GATE
pp).
.
teres
ttead
WY-209
M
23.1
Pad
Felt
QAP-1054
Bar
“Sonaper
EAS-9P59S
M24
—
Pad
Arm
Spring
QAP-1056
EA
Specker
Holder
QKT-1154
M
25
Base
Plate
Rubber
Bushing
QBG-1078
E
5
Base
Plate
Supporter
QIT-1153
M
26
Tape
Counter
eee
ele
E
6
V.U.
Meter
QSL-0024
M
26-1
Tape
Counter
Pulley
QDP-1089
E
7
A.
C.
Power
Cord
M
27
Counter
Spacer
QTW-1028
(with
2
Pin
Plug)
QFC-1021
M
28
Tape
Counter
Belt
QDB-0047

Ref.
No.
Description
Parts
No.
Ref.
No.
Description
Parts
No.
M
29
Rubber
Cushion
for
V.U.
Meter
QBG-1079
G
3-2
Record
Lock
Spring
QBC-1042
M
30
Screw,
Round
Head
M3¢
x8
QHM-230
*
8U3
G
3-3
Record
Lock
Lever
QML-1219
M31
Cam
QMQ-1044
G
3-4
Belt
Catch
QHQ-1049
M
32
Lock
washer
13
¢
QWG-302K3
G
3-5
Plastic
Washer
4.2%8.5%0.2
QBJ-3022
M
33
Fast
Forward
Roller
Lever
Spring
QBT-1130
G
3-6
Lock
Washer
L4¢
QWG.-402K3
M
34
Fast
Forward
Roller
QDP-1090
G
3-7
Hexagonal
Nut
N4¢
QNN-4022U3
M
35
Pulley
Lock
Spring
QBT-1132
G
3-8
Screw,
Round
Head
MS36X10
QHV-230
x
10V3
M
36
Sub
Fast
Forward
Lever
Spring
QBT-113]
G
3-9
Side
Pane!
QYP-0056
M
37
Paper
Washer
3.7
x7
«0.25
QBK-7036
G
3-10
Hexagonal
Nut
N3¢
QNN-3022U3
M
38
—
Guide
Pulley
(L)
QDP-1054
G
3-11
Capstan
Rest
QMP-1036
M
39
—
Guide
Pulley
(S)
QDP-1051
G
3-12
Head
Cover
Pin
QMN-1090
M
40
Fast
Forward
Pulley
QbP-1091
G
3-13
Hexagonal
Nut
N2.6
4
QNN.-2622U3
M
41
Friction
Washer
QW@Q-1045
G
3-14
Pole
QMP-1078
M
42
Friction
Pulley
QDP--1094
G
4
Bottom
Cover
Case
Assembly
QYC-0046
M
43
Friction
Spring
QBP-1029
G
4-1.
Battery
Pulling
Belt
QFQ-1005
M
44
Plastic
Washer
680.15
QBJ-3006
G
4-2
Flat
Washer
W3¢
QWP.302N3
M
45
Friction
Pulley
Nut
QNQ-1020
G
4-3
Tapping
Screw
M3dX6
QHM-530
x
6U3
M
46
Paper
Washer
580.25
QBK-7053
Gus
Battery
Compartment
Cover
M
47
Idler
Pulley
QDP-1092
Assembly
QEO-0006
M
48
Paper
Washer
5.2><8X0.5
QBK-7065
G
6
A.C.
Power
Cord
Compartment
|
M
49
Sub
Takeup
Belt
QDB-0048
Cover
Assembly
QYF-0023
M
50
Tokeup
Belt
QDB-0049
G
7
Hinge
QKC-1013
M
51
Supply
Pulley
Brake
Arm
QXL-0064
G
8
Screw,
Round
Head
12.610
QHT-226
x
10V3
M
52
Sub
Clutch
Lever
Spring
QBT-1143
G9
Rubber
Washer
QBG-1076
M
53
Supply
Pulley
Brake
Arm
Spring
QBT-1133
G
10
Base
Plate
Holding
Screw
(long)
QHQ-1054
M
54
Supply
Pulley
QDP-1093
Gl
Base
Plate
Holding
Screw
(short)
QHQ-1052
M
55
Hexagonal
Nut
N3
¢
QNN-3022U3
G
12
Base
Plate
Pole
(long)
QHQ-1050
M
56
Motor
Assembly
QYQ-0032
G
13
Base
Plate
Pole
(Short)
QHQ-1051
M
57
Motor
Spring
QBT-1139
G
14
Flat
Washer
W3.5
@
QwWP-3512N1
M
58
Flywheel
QXF-0025
G15
Paper
Washer
3.1
*
9.1
x
0.5
QBK-7039
M
59
Flywheel
Thrust
Steel
Ball
QDK-1002
G
16
Screw,
Round
Head
M3
@X5
QHM-230
x
5U3
M
60
Screw,
Round
Head
M364
QHM-130
x
4U3
G17
Knob
Holding
Screw
QHQ-1055
M
61
Flywheel
Spacer
QNK-1063
G
18
Lock
Washer
L4é
QWG-352K3
M
62
Thrust
Steel
Ball
Retainer
QMQ-1035
G19
Operator
Knob
QGT-
2025
M
63
Pinch
Roller
Lever
Spring
QBT-1125
G
20
Fast
Forward
Button
QGO-1024
M
64
Clutch
Lever
Spring
QBT-1064
G
21
Volume
Control
Knob
QGT-1046
M
65
Rewind
Lever
QXL-0062
G
22
Tone
Control
Knob
QGT-1047
M
66
Plastic
Washer
470.15
QBJ-3009
G
23
Jack
Conceal
Plate
QGI.1053
M
67
Rewind
Pulley
QDP-1052
M
68
Steel
Washer
4120.3
QW@Q-1051
RECESS
ORIES
M
69
Rewind
Rubber
Belt
QDB-0025
Bz
\1-»
’
“Cyngmic:.Mictophone
WM.2050N
M
70
Rewind
Lever
Spring
QBT-1072
A
2
Accessory
Bag
QFK-0010
M71
Motor
Lifter
QBK-1042
fn.
“>
Maguetic
Earphone
M72.
Cam
Plate
QMF-1051
AAS
2
big’
plug:
B
Sigs
M
73
Record
Lock
Spring
QBT-1066-1
A
5
—
Connection
Cord-R
QEB-0017
M74
Catch
Lever
QxL-0024
A
6
—
Hand
Belt
QKH-
1026
M75
Catch
Lever
Spring
QBT-1134
A
7
5”
Recording
Tape
QFT-5NZ-1
M76
Paper
Washer
4831.5
QBK-7052
A
8
5”
Empty
Reel
QFR-SNZ-1
M77
Fast
Forward
Lever
QML-1205
A
9
Splicing
Tape
QFS-0002-1
A
10
Instruction
Book
QQT-
0178
CABINET
PARTS
PACKING
G1
Top
Cover
Case
Assembly
QYA-0040
Po
Packing
Case
QPN.
1279
G
1-1
Top
Cover
Lock
Button
QGO-3008
Pe
Inner
Cushion
(L)
QBJ-]
126
G
1-2
Top
Cover
Lock
Spring
QBP-1059
PA<3. Inner
Cushion
(R)
QBJ-]
127
G
1-3
Screw,
Round
Head
M2¢%3
QHM-220
x
3U3
Pp
4
Dust
Cover
QFD-0056
G
2
Head
Cover
QYR-0049
P
5
Accessory
Case
QPW-_1046
G
3 Main
Case
Assembly
QYB-0085
G
3-1
Record
Lock
Button
QGO-1025

CIRCUIT
BOARD
HOBOOLOS
®O
Ce)
@
(he)
GD
GD
AH
Ge)
|
65)
|
Ga)|
Ga]
S
x
Py
—
18
—
5
is)
(Rar)
or
)\(Tr4)
CT
(E11)
(Ro)
(4)
[
(3)
[Cond
|
ara)
|
8)
(R16)
(SM)
1)
7)
(R32)
(R33)
R7
c3)
(RI)
G
VR2
TH)
CABINET
PARTS
Fax
YA
a
eee
f.
He
2)
A
&
(cr)
@1
@
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EXPLODED
VIEWS
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