Toshiba PC-E70 User manual

TOSHIBA
STEREO CASSETTE DECK
PC-E/0
Tape Transport:
Mottor:
Wow & Flutter: 9
Rewind/fast-forward Time:
Frequency Response:
: “30°°Hz — 15,000 He for Power Consumption:
~ 30:Hz = 12,500Hz for | | |
“Record/playback head: .
~.0.04%WTD, RMS
Saas
VOLE
EE
Specifications
= -|Dolby NR Effect:
AP (super-hard petmalioy) pein Bee
head x1
Erase head:
AF " gap. ferrite) head x
Lick :
Dua! motor. Ic legie contcel
Capstan drive: 2
DC servo motor x1
Reel drive:
DC motor x1
Output Level:
- iPower Suaoly:
+0.15%(DIN)
Approximately. 70 seconds
» (C-60)
°° 30° Hz 17,000. ie For
chrome type tapes ; j
~ at --20 dB:
normal tapes at -20 dB. |Dimensicns: __
metal tapes at 0dB-
pecifications are subject to change without noti
~ERVICE
DATA
FILE
NO.
100-135
‘5 dB improvement at 1 KHz}
10dB improvement above |
»5 KHz
0.6% at 400 Hz with metal
“tape. ° a
“MIC: © 0.25mV (6002
—10KQ)
LINE: 70mV (50KQ2).
LINE? 0.4V (SOKO).
os PHONES: 0.5mW (8Q)°.
AC 240V D0 Hz»
(for. U.K. ‘and Australia)
AC 220V ~V, 60 Hz ‘(for
=< European. Countries. except
the U.K.)
~ AC 115/230V.~ 50/60 H Hz’
(for Middle East, Asia and
South Amiatice). Bus
33W ie
_ 420(W). x 110(H) x 280(0)
oes mm {including ‘k bs and ta
TE, TU, AY, VF

PC-E70 |
CONTENTS
42
{PRARURES.
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3.
OPERATINGCONTROLS............
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2to5
4.-
DISASSEMBICY
INSTRUCTIONS...
6
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8
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9
6.
ELECTRICAL
PARTS
LOCATIONS
.........-
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10
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SCHEMATIC
DIAGRAM
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11
8
“MECHANICAL
PARTS
LOCATIONS:
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ta
eye
Staice
bend
aet
tones
teses
12
6.
“CABINET
PARTS
LOCATIONS
on
s5
Saciewkse
way
dh
tee
testes
eee
pao
Goes
13
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(BARE
LIET
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aM
14
to
19
1.
FEATURES
@
Two-motor
IC
logic
control
system.
METAL
tape
capability
and
super
AP
heads—the
hyperbolic
head
surface
assures
stable
tape
contact
for
all
tape
types.
The
result
is
excellent
recording/play
back
performance.
Newly
developed
pause/mute
function
allows
precise
control
of
non-recorded
spaces
between
recordings.
Tape
transport
control
buttons
light
for
clear
identification
of
mode
even
from
a
distance.
LED peak meters.
Auto-repeat playback.
Timer recording and timer playback (timer optional).
Remote control (remote control unit optional).
Dolby* NR System.
2.BLOCK
DIAGRAM
LINE IN
(Lh)
Oey.
ircuit
isoprene Meter
(L ch)
LINE OUT
Record Wen)
/Playback
Head
{L ch) Headphone AMP.
Record AMP. >
—
= Jack
Record AMP. LL
Record ree
/Playback 5S i
tee 7b ~P proyoacs
jaybac!
(R ch) AMP.
Headphone AMP.
77 r a = ze
eae | Power MF 2
Microphone
y
LINE
CUT
|
Seatch
Swit
lrg Tir ch) witc witcn '
ee py AMP: se DOLBY Timer 230Ve—q 115V
a
Circuit
Seiten
iG
°
a
LINE
IN
Erasure
Ie
et
:
(R
ch)
Y®
Prevention
med
|
” Switch ee |
|
| }— |
ahi wiekces | W1§V7230V|
ASO
Detect
yi
pers
|
SOH2z/60H2
vo !
( ; Logic Control Circuit é didd d c > !
Sa — i
———,
TY as Remote Control
| WY Jack
Reel L ood Gi) To Solenoid
Motor nila Power Switch - — — -—-—— =
T Y
Tape
Detect
Capstan
ee
9
E,A
|
Switch
Motor
=
|
LED
Meter
=
(|
< l
1 aro S0Hz |
t V/ SOHZ
Reguicted
Reguloted
[Se
see
+
Voltage
+B
Voltage
{
Tu
'
Circuit
Circuit
j
re
1
-8
a
240W/50H2
Power
Transformer
Regula’
Voltage
Circuit
a ee Figure 1

3.
OPERATING
CONTROLS
:
FRONT
VIEW
COUNTER
RESET
Button
METAL
Indicator
Press to zero the counter.
DOLBY Indicator
TAPE COUNTER
Level Meters
TIMER Switch
Show recording and playback signal levels.
Sets
the
auto-repeat
playback
mode
and
timer
actuated
recording
and
playback
functions.
(See
page
5
)
Cassette
Compartment
Lamp.
POWER
Switch
ine.
Cassette
EJECT
Button
a
_Only
operates
when
the
tape
transport
is
stopp-
|
‘ed.
f;
oO
©
~
+
i
eee
MIC
(Microphone
jacks)
—
DOLBY* Noise Reduction Selector
PHONES
(Headphones
)
Socket
——
Selg-illuminating
Advanced
Logic
Controls
@ Stop
@ Record
@
Rewind
Figure
2
@ Play
© Fast Forward Wind
©
Pause
Mute
.
BACK
VIEW
Interactive
logic
control
button
(See
page
4)
;
er
Terre!
meee
TT
ee
Sree
ean
Ren
eee
Voltage
Conversion
(VF)
a]
Loosen
two
screws
and
push
the
point
of
the
screw
in
the
arrow
direction,
then
the
voltage
can
be
changed.
TAPE Type Selector
RECORD Level Control
pescapesens
a,
LINE
IN/REC
Terminals
an
|
t 1 St
| a
Screw
Up
(230V
>
115V)
Screw
Down
(115V
>
230V)
LINE
OUT/PLAY
a
ee
eee
ae
DO assser] Figure 3
*
Noise
Reduction
System
is
manufactured
under
licence
from
Dolby
Laboratories.
“DOLBY”
and
the
Double-D
symbol
are
Trademarks
of
Dolby
Laboratories
Inc.
Figure
4
Figure
5
Remote Control Socket

en
Recording
From
Radio,
Disc,
Another
Tape
Unit,
or
TV
(Numbers refer to the steps below)
Figure 6
@ Set the TIMER switch to OFF.
@
Switch
on
the
POWER.
.
® Check that your tape heads are clean.
©
Set
up
the
source
that
you
plan
to
record—disc,
radio,
or
tape.
ee
ee
ae
caaiit
3
@®
Insert
a
cassette—with
tab
for
the
side
you
will
record.
©
Set
the
TAPE
selector
to
the
tape
type
used:
NORM,
CrO2,
METAL]
or
FeCr.
The
indicator
will
light
for
metal
tape.
@ set the Dolby NR selector.
@Dolby NR recordings have reduced tape-hiss on
*”
playback.
:
DOLBY NR
Dolby System off: if tapes
are to be played back ona
deck without Dolby NR.
Figure
7
or
microphone.
@ Press the PAUSE/MUTE button to enter PAUSE
mode.
@ Press the REC and PLAY buttons simultaneously.
The PAUSE and REC buttons will light.
@ Cue up the cassette tape: If recording from the very
beginning of a cassette side; turn the RECORD level
control completely anticlockwise, then press the
PAUSE/MUTE button momentarily. The tape will
wind on past the leader, and any previous recording
will be erased. After several seconds press the
PAUSE/MUTE button again.
@Note: The first few inches of tape may be marked
in manufacture and should not be used for
hi-fi recording.
@ Play the source (disc, radio), if possible at the joud-
est part of the programme, and set the RECORD
level control so that the peaks of the programme
signal light the peak level meters given on page 4.
Now, the PC-E70 is ready to start recording. Cue
up your source (disc, tape, etc.). "os
® Start the source playing, then press the PC-E70
PAUSE/MUTE button momentarily. Recording will
start. The PLAY and REC buttons will light, and
the PAUSE/MUTE button light will go off.
8
Dolby NR (with MPX
in! titer) to record from FM
OUT,
Lee
stereo
radio
or
MPX
TV,
OFF ;
Dolby NR (without MPX
filter) to record from disc
PC-E70
@®
Continue
to
observe
the
level
meters.
If
a
very
loud
passage
exceeds
the
correct
peak
levels,
reduce
the
recording
level
gradually
with
the
RECORD
level
control.
An
excessively
high
recording
level
will
cause
audible
distortion
on
playback.
Normally,
the
RECORD
level
control
should
not
be
moved
during
recording.
‘
®
To
stop
recording,
press
either
the
PAUSE/MUTE,
button
momentarily,
or the
STOP
button.
Alterna-
tively,
the
REW
button
can
be pressed
immediately
to
rewind
the
tape
ready
for
playback.
Microphone Recording
(Numbers refer to the steps below)
Figure 8 i
The same basic procedure as for recording from disc or
radio is followed.
Set the TIMER switch to OFF.
Switch on the POWER.
Check that your tape heads are clean.
Insert a cassette—with tab for the side you will
record,
Set the TAPE selector to the tape type used (see
“Recording from disc,’’ above).
Set the Dolby NR selector.
Plug the microphone(s) into the MIC jacks on the
front panel. .
Press the PAUSE/MUTE button to enter PAUSE
mode.
Press the REC and PLAY buttons simultaneously.
The PAUSE and REC buttons will light.
Cue up the cassette tape (see ‘Recording from disc,”
above).
Position the microphones.
If feedback (a whining noise) is produced from your
speakers, turn down your amplifier volume control.
While observing the level meters, set the RECORD
level control so that the appropriate peak indicators
light for a ioud passage of sound. Move the micro-
phones, if necessary, to obtain optimum and consist-
ent
recording
leveis.
Leave
the
RECORD
level
control set throughout a recording if possible, or
adjust gradually.
@®
To
start
recording,
press
the
PAUSE/MUTE
button
momentarily.
The
PLAY
and
REC
buttons
will
light,
and
the
PAUSE/MUTE
button
will
go
off.
®
Continue
to
observe
the
level
meters
to
ensure
that the peaks do not overload (see page 4).
@ @6 6 © © 89 & 6806
PC-E70
@ To stop recording, press the PAUSE/MUTE button
momentarily, or the STOP button or REWIND
button, depending on the next operation required.
Fade-up Start
A
professional-sounding
fade-up
start
can
be
easily
achieved.
Note
the
exact
position
of
the
RECORD
level
control
in
step
@
,
then
before
step
@
,
set
the
RECORD
level
control
to
zero.
Just
after
pressing
the
PAUSE/MUTE
button
in
step
@
,
smoothly
turn
the
RECORD
level
control
up
to
the
correct
position.
Setting the Recording Level
The
correct
recording
level
depends
considerably
on
the
type
of
tape
used
and
the
program
material
being
recorded.
The
correct
tape
type
and
recording
level
should
be
selected
to
give
the
best
frequency
response
yet
lowest
noise
level.
For
the
following
three
tape
types,
the
RECORD
level
control
should
be
set
so
that
the
peak
level
meters
light
at
the
loudest
passage
of
that
program
selection:
Tape type Peak level meters
NORMAL (ferric) tape —3 dB or 0 dB
CHROME tape 0 dB or+3 dB
METAL alloy tape +3dBor+5dB
The
high
frequency
response,
in
particular,
depends
considerably
on
the
type
of
tape
and
the
recording
level.
Metal-alloy
tape,
for
instance,
provides
better
high-
frequency
response
than
normal
tape,
thus
giving
much
better
reproduction
of
higher
pitched
instruments
and
voices.
This
is
illustrated
in
Figure
9.
For the same tape, type at lower recording levels, there
is better higher-frequency response as shown in Figure10.
So,
to
record
program
material
which
contains
consider-
able
high-frequency
sound,
set
the
recording
level
somewhat
lower.
The
level
meter
on
the
PC-E70
is
an
electronic
‘‘digital’’
indicator,
which
displays
the
peaks
of
the
signal,
in
red
over
0
dB
and
in
green
below.
This
allows
very
precise
setting
of
the
recording
level.
The
Dolby
mark
[iQ]
and
the
‘adres’
mark
[AD]
indicate
the
Dolby
an
‘adrescalibration
positions,
respectively.
The
‘adres)
mark
is
for
use
when
the
tape
deck
is
con-
nected
to
an
‘adres’
unit.
The
(adres)
system
is
Toshiba’s
new
noise
reduction
and
dynamic
range
expansion
system.
Metal tape
Chrome tape
Level
Normal tape
High-frequency Response (Hz)
Figure
9
Frequency
Response
Curves
for
Different
Types
of
Tape
Recording level
set to +10 dB
Recording level
set to 0 dB
Recording level set to -10 dB
Level
High-frequency Response (Hz)
Figure 10 Frequency Response Curves at
Different Recording Levels
Mute Recording
After
recording
a
piece
of
music,
you
may
want
to
create
a
short
silent
space
before
further
recording.
The
advanced—logic
MUTE
feature
of
the
PC-E70
allows
you
to
do
this
easily
and
professionally.
At the end of a recording, tape transport is normally
stopped by pressing the STOP button or the PAUSE/-
MUTE button momentarily. If, however, the PAUSE/-
MUTE button is pressed and held in during recording,
the tape continues to run but will be erased. When the
button is released , the tape will stop in record standby
made ready to continue recording. To start recording
again press the PAUSE/MUTE button a second time;
when the PAUSE/MUTE button is released , recording
will start.
The PAUSE/MUTE button therefore serves.a dual
purpose: record mute and pause.
For proper operation follow the steps given in the table
just below:
@ Releasing the
pause mode
This is illustrated below.
To restart recording,
@® Making a
non-recorded gap
momentarily press the
A non-recorded gap can
button again.
be created by press-
ing and hoiding the
PAUSE/MUTE button
PAUSEINUTE during recording. When
the button is released,
| the tape stops in the
button
operations
| Pause mode. i
no Hor ,H#o, oO
SFAe be oe) (a
a ye = =
Zl} z =
= “Pits AVR hN
Press Release Press momentarily
Non-record- iy
Tape
ee
el
adses
|
Ui,
YY
record mode Record mute _‘ Tape transport
starts. stops.
Recording starts again.
Figure 711
@When the button is pressed during playback, only the pause func-
tion operates. The PAUSE/MUTE button is not effective in the fast-
forward and rewind modes.

PLAYBACK
Normal Playback
(Numbers refer to the steps below)
OO EET TOTTORI ESS
he i ei a AC
Figure
12
b6
de
@ Set the TIMER switch to OFF.
@ Switch the POWER on.
©
Take
up
any
slack
in
the
cassette
to
be
played.
@
insert
the
cassette
with
the
play
side
facing
you.
@ Set the TAPE selector for the tape type:
NORM, CrO2, [METAL], or FeCr.
@ Set the Dolby NR switch to:
IN for tapes recorded with Dolby NR.
OUT for other tapes.
Note:
The
IN
and
MPX
OFF
positions
give
the
same operation in playback.
@
Press
the
REW
button
to
wind
to
the
beginning
of
the
tape,
or
the
FF
button
to
Fast-Forward
wind
to
a
later
selection.
@
Set
the
volume
control
on
your
amplifier
to
a
reasonable
position,
and
set
the
monitor
(and
tape)
switches
on
your
amplifier
correctly.
@
Press
the
PLAY
button
to
start
playback.
The
PLAY
button
lights.
@
To
gofrom
playback
to
another
mode,
the
PAUSE/-
MUTE,
REW,
FF
or
STOP
buttons
may
be
pressed
directly.
@
At
the
end
of
the
tape,
playback
will
automatically
stop.
Auto-repeat Playback
The
PC-E70
can
play
a
tape
then
automatically
rewind
to
the
beginining
and
start
playback
again
repeatedly.
Or
it
can
rewind
first,
then
start
auto-repeat
playback.
@ Switch on the POWER.
@
Followsteps
3
to
6
of
Normal
Playback,
above.
© set the TIMER switch to PLAY REPEAT.
@
(A)
For
Playback—rewind—playback:
Press the PLAY button.
(B) For rewind—play—rewind:
Press the REW button.
@®
To
stop
auto-repeat
playback,
press
the
STOP
button. ; :
Note: If the TIMER switch is left in the PLAY/-
REPEAT
position
when
the
deck
is
switched
off. Auto-repeat playback will start auto-
matically
when
the
POWER
is
next
switched
on.
PC-E70
TIMER
RECORDING/PLAYBACK
The
TIMER
switch
should
normally
be
set
to
OFF
before
the
POWER
is
switched
on.
With
the
TIMER
switch
in
the
REC
or
PLAY
positions,
when
power
is
switched
to
the
deck
either
at
the
POWER
switch
or
by
an
external
audio
timer,
recording
or
playback
will
start
automatically.
Note
that
the
audio
timer
must
also
switch
on
and
off
the
power
to
the
otner
hi-fi
compo-
nents.
When
the
end
of
a
tape
is
reached
during
unattended
recording
or
playback,
the
tape
stops
and
the
tape
transport
is
automatically
disengaged.
However,
the
power
to
the
deck
and
your
stereo
system
will
remain
on,
causing
unnecessary
power
consumption
and
pos-
sible
danger.
To
avoid
this,
it
is
advisable
to
use
an
audio
timer
that
automatically
switches
the
power
to
tne
system
both
on
and
off.
Timer Recording
1
Set
up
the
cassette
deck
and
amplifier,
tuner,
etc.
for normal recording:
@
Set
the
TIMER
switch
on
the
PC-E70
to
OFF.
@ Switch on the POWER.
@
Insert
a
cassette
with
a
tab
on
the
side
to
be
recorded.
@
Set
the
TAPE
selector
and
Dolby
NR
selector.
© Precisely tune to the desired radio station.
@ Preset the recording level, after pressing the
PAUSE/MUTE then the REC and PLAY buttons.
2
Set
the
audio
timer
to
the
desired
recording
start
time, and also set it to switch off the power to the
system.
3. Leave the PC-E70 POWER switch on.
4 Set the TIMER switch to REC.
When
the
time
preset
on
the
audio
timer
is
reached,
the
audio
system
power
will
be
turned
on,
and
automatic
recording will start.
Note:
Set
the
TIMER
switch
to
OFF
when
automatic
recording
has
been
completed.
If
the
TIMER
switch
is
accidentally
left
in
the
REC
position,
a
portion
of
a
recorded
tape
may
be
unintentionally
erased
when
the
power
is
switched
on.
Timer Playback
(for morning alarm, etc.)
1. Play the tape to be used for the morning alarm and
adjust the amplifier volume control to a suitable
volume level.
2. Set the audio timer to the desired alarm time, and
also set it to switch off the power to the system.
3. Set the tape deck TIMER switch to the PLAY
position.
When the preset alarm time is reached, the tape deck will
automatically start playback.
Note: When playback starts the PC-E70 will play in the
auto-repeat mode until stopped. When the auto-
repeat mode is no longer required, set the
TIMER switch to the OFF position.
PC-E70 |
4.
DISASSEMBLY
INSTRUCTIONS
2
en
Top
Cover
Removal
.
1.
Remove
four
screws
(A)
and
(B)
from
each
side
of
a
:
Top
Cover
(See
Figure
13
and
14)
2. Remove two screws (C) from rear panel of unit.
(See Figure 15)
3. Lifting the Top Cover upright, pull it back wards and
the Top Cover can be removed out.
e (A)
¢
net!
met gee
ee
wee OS mm 5 anna
Figure 14
Figure 13
Ceca eeystid Satie teh gh aha OH OF DP RERE PAREN ELSE IRN ,
Bottom Cover Removal
1.
Remove
the
Top
Cover.
:
:
2.
Remove
five
screws
(D)
from
the
bottom
plate.
(See Figure 16) 2
3.
Remove
two
screws
(E)
from
side
of
the
unit.
(See
:
F
Figure
15
Figure
17)
4.
Bottom
Plate
can
be
removed
from
the
unit.
Figure 16 F (E) Figure 17

Cassette Cover Removal
1. Push the eject button to open the cassette cover.
2. Press the top and bottom of cassette cover with
fingers, and upward in direction of the arrow direc-
tion (F).
Then the Cassette cover can be removed from unit.
(See Figure 19)
aibidi ( OO8
Figure 18 Figure 19
TATA ITIL WARS
eae SSR owt tl SE a A eh ORS NE ners ree =
Front Panel Removal of
1. Remove the top and cassette cover. a
2. Remove the three knobs (G). (See Figur 20) z :
3. Remove thirteen screws (H) and (I). (See Figure 21 and 22) *
4. Front panel can be removed from unit. ®
(H)
g () (G)
Figure 21
Mechanism Assembly Removal
Figure 22
1. Remove cassette cover.
2. Remove six screws (J) and (K) (See Figure 23 and 24)
3. Remove the one leg(L)from the chassis then mechanism
assembly can be removed. g
(J)
(L)
Figure 24

PC-E70
5. ADJUSTMENTS
S|
R428
TP24R
~ TP24L
Z602_ nase
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=) [Q] z401
Q419
fe sit
Figure 25
TEST EQUIPMENTS
1. VTVM (Vacuum Tube Voltmeter)
2. Signal Generator
3. Resistance Attenuator
4. Screwdriver
RECORD/PLAYBACK HEAD ADJUSTMENT
Erase Head Adjusting Screw
Head Azimuth
Adjusting Screw
Adjust for Maximum Output. Figure 26
ERASE HEAD HEIGHT ADJUSTMENT
1. Temporaily mount the erase head so that it will be
even by eye measurement.
2. Set in PLAY position with setting a mirrow cassette
tape, MC-09C.
3, Adjust the height adjusting screw so that the upper
edge of the tape will touch at the upper tape guide of
the erase head. See figure 28.
4. Confirm whether the upper edge of the tape is not
Curled.
5. Test Tapes:
MTT-114 (10 kHz)
MTT-150 (400 Hz)
AC-511 (CHROME TAPE)
Upper Guide
Figure 27
Touch Here Curled
Tape ——
Sith = 1.
Tape ——
Exon ae
Figure 28
OK
5. Paint the adjusting screw with lock paint.
P.S. When the mirror cassette is not available, please re-
model a normal tape, type C-90 as shown below.
See figure 29.
Figure 29

t
‘i
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4
i
3
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| PC-E70 PC-E70 |
ADJUSTMENT PROCEDURES
Description
Nominal
‘Test
Volume
Control
Adjustment
Test
Test
Freq.
|
Specs
Tape
|
REC
|
TAPE
|
DOLBY
Posints
Points
ATT
1
Head
Azimuth
Adjustment
MTT-111
OUT
|
Head
Azimuth
|
LINE
OUT
Adjustment After Adjustment lock with screw point.
Screw
2
’
TApe
Speed
Measurement
00030
Hz|
MTT-111
OUT
Semi-fixed
LINE
OUT
. resister in the
Playback
Sensitivity
580
+
10mV|
MTT-150
OUT
LINE
OUT
Adjustment
Playback
Frequency
Response
MTT-215C
OUT
LINE
OUT
:
SS
Measurement
(Normal)
7
10
Khz
Level
difference
for
315
Hz
Playback
Frequency
Response
4
+2
dB
|MTT-215C
NOR OUT
LINE
OUT
Measurement
(Chrome)
ae
Change
for
10
KHz
Normal
tape
Output
Noise
Level
Under
.
{Blank
Tape
OUT
2.0mV
Line
Input
Level
Adjustment
|
580+
10mV
Adjustment
CrO2
OUT
LINE
OUT
400
Hz
REC.
Volume
adjustment
must
be
kept
—17 dB till frequency response adjustment
9
Meter
Adjustment
Meter
Indi.
|
CrO2
OUT
R525,
526
LED
Meter
|
400
Hz
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dB
Lee
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sol
oo
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ead
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cto
ts
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|
|
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Playback
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O+2
AC-512
LINE
OUT
400
Hz
to
c
Response Adjustment —0
Power Supply TE: 220V VF: 230V TU, AY: 240V
©
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rms
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OUT
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47
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ohm
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|
10
kHz
|
—
40
dB
LINE OUT 400 Hz
— 17 dB
R511
R512
11 Record/Playback Sensitivity
Adjustment
Measurement
Condition
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TP24L
| ve ‘
2401
3. Ae
ene te)
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R/P Head (L)
LINE IN
‘Test Tape
(MTT-150)
Resistance
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—17dB
Signal
Generator
400Hz
R/P Head (R)
SO °} Figure 31
VTVM
R415
Figure 30 TP24R
LINE IN 7
(Rec/Play Sensitivity Adjustment)
Resistance
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400Hz \
Signal
Generator
LINE IN LINE
VTVM
VTVM
LINE IN
Figure 33
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7
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4ooHziokrz 49-40 dBV
>
nd (~) <b Ras2 LINE yt
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IN
=
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Figure 34
VTVM
VTVM
Figure 32

PC-E70 PC-E70
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CAUTION:
The /\ mark, the symbol! No. circled with rectangle in the schematic diagram and the shaded area in the Parts list designate components
which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or
Ww specified in the parts list.

| PC-E70 PC-E70 |
8.
MECHANICAL
PARTS
LOCATIONS
|
9.
CABINET
PARTS
LOCATIONS
Mecha P.C.B.
Bei 1
Note: The parts without Key No. on this exploded Note: The parts without Key No. on this exploded
Parts list are unserviceable parts. parts list are unserviceable parts.
-12- ee —13-

10. PARTS LIST
CAUTION:
The /\ mark, the symbol No. circled with rectangle in the schematic diagram and the shaded area in the parts list designate components
which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or
specified in the parts list.
Symbol No.
Part No.
Description
Symbol No.
Part No. Description
CABINET
PARTS
18
22707451
|
Screw,
BID
¢2
x
5mm
19
22707505!
Screw,
BID
¢2
x
6mm
25819459
|
Front
Panel
Ass’y
20
22703118|
E
Washer
$2
25817809
|
Cover
Ass’Y,
Cassette
1
22703279!
E
Washer
$3
22841229")
‘Top
Gover
22
| 22217357]
Head,
Record/Playback
HRPT-77
25817829
|
Cover
Ass’y,
Mechanism
23
22218213|
Head,
Erase
HET-43
305
25838522
|
Jack
Plate
(TE)
24
25726489
|
Sleeve,
Erase
Head
25838523
|
Jack
Plate
(TU,
AY)
25
25753325
|
Roller
25838533
|
Jack
Plate
(VF)
26
25753347
Roller-H
306
22828048
|
Leg
27
25753348)
Roller-HL
308
25771412
Spring,
Cassette
UP
28
25764400!
Washer,
3
309
25814361
|
Decoration
Ass’y
30
25771951)
Spring
310
|
25873224
|
Counter
31
25772240
|
Spring,
Head
311
25837494
|
Knob,
DOLBY
NR/TAPE
32
25772438
|
Spring,
Erase
Head
SELECTOR
33
25773469
|
Spring,
Pressure
Lever
312
25837469
|
Knob,
Rec-R
34
25717473)
Pressure
Roller
313
25837468
|
Knob,
Rec-L
35
25791213)
Chassis
Ass’y,
Head
314
22884010
|
Knob,
Power
36
22707494
|
Screw,
DTBID
$2.6
x
4mm
315
25837467
|
Knob,
Counter
37
25764549
|
Washer,
$1.7
316
25837475
|
Knob,
Timer
38
25766019
|
Washer,
Back
Tension
317
25838448
|
Knob,
Mechanism
39
25771586
|
Spring
319
25817828
|
Holder
Ass’y,
Cassette
40
25772254
|
Spring,
Back
Tension
|
324
25845528
|
Bush,
Cord
41
25712360
|
Reel
Drum
Ass’y
329
25838444
|
Dial
Plate,
Meter
42
25764570
| Washer,
$2.1
331
22707522
|
Screw,
3
x
6mm,
Chrome
43
25791191]
Reel
Mount
Ass’y
332
22705022
|
Rivet,
Plastic,
36x
5.5mm
45
25735246
|
Retainer,
Spring
333
22707521
|
Screw,
FLDT
03
x
6mm,
BLK
46
25735252
| Washer,
Stopper
334
22707350
|
Screw,
DTBID
62.6
x
5mm
47
25762401
|
Felt,
FF
335
22707397
|
Screw,
DTBID
42.6
x
5mm,
BLK
48
25772572
|
Soring,
Idler,
£F
336
22707445
|
Screw,
DTBID
93
x
6mm
49
26713972|
idigp
Assis
FE
337
22707446
|
Screw,
DTBID
$3
x
6mm,
BLK
50
25791141
|
Plate
B
Ass’y,
Idler
338
22701326
|
Screw,
Tapping
¢3
x
8mm,
BLK
51
22701389
|
Screw,
BID
2.6
x
3mm
341
22707626
|
Screw,
FLT
02.6
x
8mm,
BLK
52
|
25791216
Motor
Assy,
Reei
342
22707366
|
Screw,
DTBID
$2.6
6mm
53
25791297
|
Motor
Ass’y,
Main
344
22707301
|
Screw,
Tapping
2.6
x
8mm
54
22707429
|
Screw,
Motor
345
22707165
|
Screw,
36x10
mm,BID
BLK
(VF)
56
25755448
|
Belt,
Main
346
22950753
|
Label,
Voltage
(VF)
57
25761238
|
Cushion,
Motor
347
22703203
|
Washer,
3¢
(VF)
59
25764398
|
Washer
$2.5
alee
61
|
25783219
|
Screw,
THRUST,
Flywhee
MECHANISM
62
25717451
|
Flywheel
Ass’y
1
22707350
|
Screw,
DTBID
62.6
x
5mm
63
25718158
|
Holder
Ass’v,
Capstan
2
22707169
|
Screw,
BID
$2.6
x
10mm
64
22707452
|
Screw,
BID
¢3
x
6mm
3
22707617
|
Screw,
DTPAN
$2.6
x
6mm
-
68
22701472
|
Screw,
FLT
5
25755351
|
Belt,
Counter
73
25771630
|
Spring
8
25724420
|
Bush
25776180
|
Spring
9
25761400
|
Stopper,
Head
Chassis
22703269
| Washer
63
11
25783222
| Guide-AL
25791074
|
Damper
Ass‘y
12
25783223
|
Guide-AR
25771898
|
Spring
25762384
|
Feit,
Frictione
—~14—

PC-E70 |
Q401, 402
403, 404
411,412
413, 414
415,416
417, 418
421,422
423, 424
0405, 406
0407, 408
Q409, 410
0419, 420
0425, 426
Q601, 602
604, 605
610, 613
614, 620
625, 627
Q603, 606
607, 608
609, 612
624, 626
0611
0615, 619
0616, 617
0618, 623
Q621
Q622
0628, 629
630
0631
Q632
Q701, 702 ;
0901, 902 |
Q903
D401, 402
403, 404
405, 406
407,408
608, 609
610, 611
612,613 |
614, 615
616, 617
618, 619
620, 621
| 06071, 602 |
Symbol No. | Part No.
TRANSISTORS, ICS & DIODES
22114681
22114470
Transistor, 2SK30A-GR
Transistor, 2SC2240-GR
Transistor, 2SA970-BL
Transistor, 2SC2240-BL
IC, NE646BN-C
Transistor, 2SC1815-GR
Transistor, 2SC1815-GR
Transistor, 2A1015-GR
Transistor, 2SC982TM
Transistor, 2SC2120-Y
Transistor, 2SA950-Y
Transistor, 2SC2655-Y
Transistor, 25C1959-Y
Transistor, 25A1020-Y
IC, NJM4558D-A
IC, TA7318P-2
, IC, TC97127P
IC, TA7612AP
Transistor, 25C1173-Y
| Transistor, 2SA473-Y
Diode, 1S1553V
| Diode, 1$1555V
Symbol! No.
Part. No.
Description
+
D622, 623
624, 627
629, 630
631, 634
635
D603
D604
D605
D606, 607
D625
D626
D628
D632
D633
D701
zi
Diode, 1$1555V
Diode, TLO108, LED
Diode, TLR124, LED
Diode, TLG 124A, LED
Diode, TLY108, LED
Termister, D33A
Diode, 02Z6.8A
Diode, $5277B
Diode, TLG205, LED
Diode, TLY205, LED
Diode, $4424, LED Meter
A\| D901 | Diode, 1B2Z1
ZA\| D902 ve Diode, 1B2C1
A\| D903 22115485 | Diode, WLO2M
D904, 905 Diode, 05213L
D906 Diode, 05Z10-U
D907, 908 Diode, 1$1553V
LS |
ELECTRICAL PARTS
Alu
22147224
|
Coil,
Solenoid
|
L401, 402 |! 22232207 | Coil, 2.2mH
A\j T9017 _ | 22223866 Transformer, Power (7 E)"
AN
22223867
|
Transformer,
Power
(TU,
AY)
A -. | 22223868 | Transformer, Power (V F)
$1
22195553
|
Switch,
Slide,
Tape
Silector
$2 22195624 | Switch, Rotary, Dolby
$3 22195566 | Switch, Slide Timer
$49
22195623
|
Switch,
Key,
Mechanirm
S10 22195626 | Remote Wire 4P, (S1}
1$714
22195199
|
Switch,
Leaf
Erasure
'revention
$12
22195603
|
Switch,
Leaf,
Motor
A\|s901
22195686
|
Switch,
Power
A\|
s902
22146186
|
Switch,
Voltage
Selecor
(VF)
J _ | 22163759 | Jack, US-4P iid
J2
22163675
|
Jack,
6.5¢-2P
Micropto
ne
22167893
22163777
—~15—
Socket, DIN-7P
Jack, 66 Headphone

Symbol No. | Part. No.
2401,402 | 22153116
405, 406
2403, 404
2601
Z602
PL1
22153117
22120053
22132530
22113508
_| 22113509
(22144357.
122144408 |
“| 22176286 |
| 22176536:
| 22176125
929176588
“122165078
Description
PC-E70
Description
Filter, DOLBY BL
Filter, DOLBY BK
MPE, DM101A
Bias Oscillator Unit
Lamp, 14V, 70mA Meter Plate
Lamp, 12V 40mA Mechanism _
Fuse, , 71.25A/250V (TE, TU, AY)
Fuse, T500mA/250V(TE,TU, AY)
‘Cord, Power, E2ES (TE) 1
Cord; Power, ‘BS (TU):
Cord, Power, EP (VF). ”
Cord, Power, “‘A2SA-7A (AY). :
‘Holder, Fuse, 4P (TE, TU, AY) ©
CAPACITORS
D = +0.5 pF, J= +5%, K=
CD = Ceramic Disk, EL= Electrolytic
ABBRVIATIONS:
+10%, M=+20%, Z = —20 +80%
MY = Mylar, PS = Polystyrene BL = Barrier Layer
22349102
| 22488339
22488339
22361509
22362180
22349151
22349331
22362180
| 22488479
| 22483101
22371153
22349331
22483470
22483101
C401, 402
C403, 404
C405, 406
| C407, 408
C409, 410
C411,412
C413,414
C415.416
C417,418
C419, 420
C421,422
C423, 424
C425, 426
| C427,428
; EL, 100mfd, 10V
C429, 430
C431, 432
C433, 434
C435, 436
C437, 438
C439, 440
22483101
| 22349151
22349151
22488100
22371472
22371562
22371273
22349331
22371472
C441, 442
C443, 444
C445, 446
CD, 1000 pF, 50V K
EL, 3.3mfd, 50V
EL, 3.3mfd, 50V
CD. 5pF, 50V, D
CD, 18pF, 50V, K
CD, 150pF, 50V, K
CD, 330pF, S0V, K
CD, 18pF, 50V, K
EL, 4.7mfd, 50V
EL, 100mfd, 10V
MY, 0.015mfd, 50V, J
CD, 330pF, 50V, K
EL, 47mfd, 10V
EL, 100mfd, 10V
CD, 150pF, 50V, K
CD, 150pF, 50V, K
EL, 10mfd, 50V
MY, 4700pF, 50V, J
MY, 5600pF, 50V, J
MY, 0.027mfd, 50V, J
CD, 330pF, 50V K
MY, 4700pF, 50V, K
Symbol No.| Part. No.
an
c449, 450 | 22480006
C451, 452 | 22480003
C458, 454 | 22488100
C455, 456 | 22372473
C457, 458 | 22483221
C459, 460 | 22349102
C461, 462 | 22488479
C463, 464 | 22488479
C465, 466 | 22480004
C467, 468 | 22360330
C469, 470 | 22360327
C471,472 | 22360328
C473, 474 | 22371223
C475, 476 | 22488339
C477, 478 | 22485330
C479, 480 | 22488339
C481, 482 | 22349332
C483, 484 | 22488339
C485, 486 | 22488100
C601 22485220
C602 22485330
C603 22485101
C604 22483101
C605 22488100
C606 22488109
C607 22488109
C608 22349102
C609 22349102
C610 22349102
C612 22342103
C613 22485220
C614 | 22488100
C615 22488339
C616 | 22360484
C618 | 22483101
C619 | 22488229
C620 22360484
C621 22488339
C622 22483101
C623 22485330
C624 22488479
C625 | 22486101 |
C626 22488100
C627 ' 22483101
C628 22342103
C629 22488109
C630 | 22485330
C631 22485101
C632 22380101
C635 22485330
C636 22488109
EL, 100mfd, 10V
/ EL, 100mfd, 10V
EL, 220mfd, 10V
EL, 0.33mfd, 50V
EL, 0.1mfd, 50V
EL, 10mfd, 50V
MY, 0.047mfd, 50V, K
EL, 220mfd, 10V
CD, 1000pF, 50V, 2
EL, 4.7mfd, 50V
EL, 4.7mfd, 50V
EL, 0.15mfd, 50V
BL, 0.033mfd, 25V,M
BL, 0.01mfd, 25V,M
BL, 0.015mfd, 50V, M
MY, 0.022mfd, 50V, J
EL, 3.3 mfd, 50V
EL, 33mfd, 16V
EL, 3.3mfd, 50V
CD, 3300pF, 50V, K
EL, 3.3mfd, 50V
EL, 10mfd, 50V
EL, 22mfd, 16V
EL, 33mfd, 16V
EL, 100mfd, 16V
EL, 100mfd, 10V
EL, 10mfd, 50V
EL, imfd, 50V
EL, 1mfd, 50V
CD, 1000pF, 50V, Z
CD, 1000pF, 50V, Z
CD, 1000pF, 50V, Z
CD, 0.01mfd, 50V, Z
EL, 22mfd, 16V
EL, 10mfd, 50V
EL, 3.3mfd, 50V
CD, 0.047mfd, 50V, Z
EL, 2.2mid, 50V
CD, 0.047mfd, 50V, Z
EL, 3.3mfd, 50V |
EL, 100mfd, 10V
EL, 33mfd, 16V
EL, 4.7mfd, 50V
EL, 100mtd, 25V
EL, 10mfd, 50V
CD, 0.0imfd, 50V, Z
EL, Imfd, 50V
EL, 33mfd, 16V
EL, 100mfd, 16V
PS, 3900pF, 200V, K
EL, 33mfd, 16V
EL, Imfd, 50V
21h

PC-E70
Part.
No.
[
Description
22488100
JEL,
10mfd,
50V
22485330
JEL,
33mfd,
16V
22349221
|CD,
220pF,
50V
,
K
22485330
|EL,
33mfd,
16V
22485330
JEL,
33mfd,
16V
22483331 |EL, 330mfd, 10V
~/f22340147
|CD,
0.01mtd,
400V.
-
122486222
|EL,
2200mfd,
25V_
2
[92486102
|EL,
1000mfd,
25V.
22485221
|EL,
220mfd,
16V
22485471
|EL,
470mfd,
16V
“199486102
[EL
1000mfd,
25V.
22485221
|EL,220mfd,
16V
-
22485471
|EL,
470mfd,
16V
22485221
|EL,
220mfd,
16V
22485471
|EL,
470mfd,
16V
22488479
|EL,
4.7mfd,
50V
RESISTORS
All
resistors
are
carbon
film
%W,
£5%,
unless
otherwise
noted.
K = 1000. M = 1000000
es
R401,
402
|
22545333
|33K
ohm
'R403, 404 | 22555104 | 100K ohm
R405,
406
|
22555222
|
2.2K
ohm
|R407,408
|
22555104
|
100K
ohm
R409,410
|
22545102}
1K
ohm
R411,
412
|
22545471
|
470
ohm
R413,414
|22555473
|47K
ohm
R415
22655425
|
50K
ohm,
A,
Variable,
Rec
Levei
R417,418
|22555104
|
100K
ohm
R419,420
|
22555473
|47K
ohm
R421,422
|
22545472
|4.7K
ohm
R423,
424
|
22555104
|
100K
ohm
R425,
426
|
22545154
|
150K
ohm
R427,428
|
22658501
|
500
ohm,
Semi-fixed
Variable
R429,
430
|
22555224
|
220K
ohm
|R431,432
|
22555682
|
6.8K
ohm
(R433,
434
|
22555470
|47
ohm
R435,
436
|
22555222
|
2.2K
ohm
R437,
438
|
22555392
|
3.9K
ohm
R441,
442
|
22555332
|
3.3K
ohm
R443,
444
|
22555123
|
12K
ohm
R445,
446
|
22545106
|
10M
ohm
E447,448
|
22545392
|
3.9K
ohm
R449,
450
|
22545392
|
3.9K
ohm
Symbol No. | Part. No.
Description
R451, 452
R453, 454
R455, 456
R457, 458
R459, 460
R461, 462
R463, 464
R465, 466
R467, 468
R469, 470
R471, 472
R473, 474
R475, 476
R477,478
R479, 480
R481, 482
R483, 484
R485, 486
R487, 488
R489, 490
R491, 492
R493, 494
R495, 496
R497, 498
R499, 500
R501, 502
R503, 504
R505, 506
R507, 508
R509, 510
R511, 512
R513, 514
|R515, 516
R517, 518
R519, 520
R521, 522
R523, 524
R525, 526
R527, 528
R529, 530
R531, 532
1R6OQ1
R602
R603
R604
R605
R606
R607
R608
a7
22545106
22545106
22555102
22555104
22555473
22555332
22555105
22555101
22545106
22545271
22555274
22555224
22545271
22555103
22545106
22555103
22545106
22555123
22545183
22545473
22545273
22555272
22555103
22555472
22555104
22555470
22545471
22555222
22555472
22658464
22545102
| 22555104
22555332
22555123
22545471
22545471
22658464
22555103
22555152
22555103
22545221
22555562
22555224
22545103
22545472
22555333
22545472
22545333 |
a
22658470
200K ohm, B, Semi-fixed
Variable
10M ohm
10M ohm
1K ohm
100K ohm
47K ohm
3.3K ohm
1M ohm
100 ohm
10M ohm
270 ohm
270K ohm
220K ohm
270 ohm
10K ohm
10M ohm
10K ohm
10M ohm
12K ohm
18K ohm
47K ohm
27K ohm
2.7K ohm
10K ohm
4.7K ohm oy
100K ohm
47 ohm
470 ohm
2.2K ohm
4.7K ohm
50K ohm, Semi-fixid Variable
1K ohm
100K ohm
3.3K ohm
12K ohm
470 ohm
470 ohm
50K ohm, Semi-fixecdt Variable
10K ohm
1.5K ohm
10K ohm
220 ohm
5.6K ohm
220K ohm
33K ohm
10K ohm
4.7K ohm
33K ohm
4.7K ohm

Symbol No.| Part No.
R609 22545473
22555683
22555223
22555103
22555104
22555222
22555103
22555104
22555103
22555222
22555103
22545154
R621 22545473
R622 22555333
R623 22555104
R624 22555333
R625 22555104
R626 22555472
R627 22555472
R628 22555153
R629 22555103
R630 22555104
R631 22555223
R632 22555222
R633 22555473
R634 22555333
R635 22545472
R636 22555222
R637 22555104
R638 22545333
R639 22555333
R640 22555104
R641 22555472
R642 22555333
R643 22555104 |
R644 22545472
R645 22555473
| R646 22555473
R647 22555101
R648 22555121
R649 22545121
R650 22555121
R651 22545121
R652 22545121
R653 22545223
R654 22555104
| RGSS 22570300
R656 22555391
R657 22555470
R658 22658491
R659 22555122
R66O 22555102
R661 22555102
22545332
Description
47K ohm
68K ohm
22K ohm
10K ohm
100K ohm
2.2K ohm
10K ohm
100K ohm
10K ohm
2.2K ohm
10K ohm
150K ohm
47K ohm
33K ohm
100K ohm
33K ohm
100K ohm
4.7K ohm
4.7K ohm
15K ohm
10K ohm
100K ohm
22K ohm
2.2K ohm
47K ohm
33K ohm
4.7K ohm
2.2K ohm
100K ohm
33K ohm
33K ohm
100K ohm
4.7K ohm
33K ohm
100K ohm
4.7K ohm
47K ohm
47K ohm
100 ohm
120 ohm
120 ohm
120 ohm
120 ohm
120 ohm
22K ohm
100K ohm
27 ohm, 2W, Metal film
390 ohm |
47 ohm
300 ohm, Semi-fixed Variable
1.2K ohm
1K ohm
1K ohm
3.3K ohm
R665
R666
R667
R668
R669
R671
R672
R673
R674
R675
R677
R678
R679
R680
R681
R682
R683
R684
R685
R686
R687
R688
R689
R690
R691
R692
R693
R694
R695
R696
R697
R698
R699
R701, 702
R703, 704
R705, 706
R707, 708
R709, 710
711,712
713,714
715, 716
717,718
719, 720
721,722
723, 724
R725, 726
727, 728
729, 730
731, 732
Symbol No.
R676
Part No.
22555103
22545102
22555103
22555103
22555103
22555103
22545223
22545102
22545103
22555102
(22555102
22545560
22555105
22555224
22555224
22545102
22555154
22555224
22555102
22555473
22555224
22555223
22545472
22545223
22555333
22555103
22555103
22555104
22547331
22547391
22570305
22545472
22555104
| 22555224
22555104
22555273
22555103
22555681
22555821
22555681
22545102]
Description
10K ohm
1K ohm
10K ohm
10K ohm
10K ohm
10K ohm
22K ohm
1K ohm
10K ohm
|
22570847|
10
ohn
220K ohm
220K ohm
1K ohm
150K ohm
220K ohm
1K ohm
47K ohm
220K ohm
22K ohm
4.7K ohm
22K ohm
33K ohm
10K ohm
10K ohm
100K ohm
330 ohm, %W
390 ohm, 2W
68 ohm, 2W, Metai Oxided titm
4.7K ohm
100K ohm
220K ohm
100K ohm
27K ohm
10K ohm
680 ohm
820 ohm
680 ohm
| PC-E70
—~18—

Symbol No.| Part No.
Description
R733, 734 | 22555821
22547331
22545560
22547471
22555560
22547181
22555560
22555102
820 ohm
330 ohm, %W
56 ohm
330 ohm, ZW
56 ohm
180 ohm, “%W
56 ohm
1K ohm
ACCESSORIES
22164775 | Cord, Joint
22164314
|
Plug,
AC
Adapter
(VF)
22990756
|
Clener,
Head
22902792
|
Owner's
Manual
(TE,
TU,
AY)
22902811
|
Owner’s
Manual
(VF)
;
TOSHIBA
CORPORATION
2-1,
GINZA
S5S-CHOME,
CHUO-KU,
TOKYO
104,
JAPAN
PRINTED IN JAPAN July 21955919 1980(¢