Yamaha R-70 User manual

I
1
R-70 / R-70M
• SPECIFICATIONS
•AUDIO SECTION
Continuous Power Per Channel
20Hz to 20kHz, 0.015% THO 8n. 45W
Dynamic Power
1
kHz I HF Signal 4f2 80W
2n. 80W
DIN Standard Output Power Per Channel
1kHz1%THD8f2 55W(A)(B)(G)
Dynamic Headroom (IHF) -- --- -
an. 1.3dB
Power Band Width
0.02% THO 22.5W an
Damping Factor
1 kHz an
Input Sensitivity/Impedance
Phono MC
MM
Aux, Tape
Input Sensitivity (New IHF)
Phono MC
MM
Aux, Tape
Maximum Input Signal
0.02% THO Phono MC
MM
Output Level/Impedance
1 OHz to 30kHz
40
1soµv11 oon.
2. 5mV /47kf2
120mV /47kf2
24µV
0.37mV
18mV
7mV
110mV
Rec Out 120mV /4.7kn.
Headphone Jack Rated Output/Impedance
0.015% THO 0.67V/220n.
Frequency Response
20Hz to 1OOkHz Aux. Tape
RIAA Equalization Deviation
50Hz to 20kHz Phono MC
20Hz to 20kHz Phono MM
Total Harmonic Distortion
Phono MC to Rec Out (1V)
MM (1V)
Aux Tape to SP Out 1W/8n.
Intermodulation Distortion
-3dB
±o.5dB
±o.5dB
0.008%
0.008%
0.008%
Aux, Tape Rated Output/Sn. 0.008%
Signal to Noise Ratio UHF - A-Network)
Phono MC (500µV Input Shorted) 75dB/73dB (G)
MM (5mV Input Shorted) 88dB/86dB (G)
Aux, Tape, Tuner (Input Shorted) 100dB/98dB (G)
Signal to Noise Ratio (New IHF)
Phono MC
MM
Aux, Tape, Tuner
Residual Noise (!HF-A-Network)
Channel Separation
74dB/72dB (G)
72dB/70dB (G)
81dB/80dB (G)
140µV
Aux, Tape 5.1kn. Shorted lkHz 60d8
Filter Characteristics
Low (Subsonic Builtin)
ccss
LOUDNESS
BASS
PRESENCE
Preset
MAX.
Preset
MAX.
Preset
MAX.
60Hz
250Hz
1kHz
4kHz
16kHz
60Hz
250Hz
lkHz
4kHz
16kHz
60Hz
250Hz
1kHz
4kHz
16kHz
60Hz
250Hz
lkHz
4kHz
16kHz
60Hz
250Hz
1kHz
4kHz
16kHz
60Hz
250Hz
1kHz
4kHz
16kHz
15Hz -12d B/oct
OdB
-2d8
-5dB
-5dB
- 3dB
-1dB
-5dB
-12dB
-11d8
- 4dB
5dB
3dB
ldB
OdB
OdB
10dB
6dB
1dB
OdB
OdB
OdB
OdB
3dB
5dB
3dB
-2dB
OdB
7dB
lOdB
6dB
TREBLE Preset 60Hz OdB
250Hz OdB
1 kHz OdB
4kHz 3dB
16kHz 6d8
MAX. 60Hz OdB
250Hz OdB
lkHz ldB
4kHz 7dB
16kHz 11dB
HIGH FILTER Preset 60Hz 1dB
250Hz 1dB
1kHz OdB
4kHz -5d8
16kHz -6dB
MAX. 60Hz 1dB
250Hz 1dB
1 kHz -1d8
4kHz -8d8
- ----- ---~----'- 1 = 6 ~ k ~ H _z _ _ -~11dBc:__ _ ____ ~
Output Level/Impedance (Fixed)
FM 100% mod 1kHz
FM
40kHz mod
AM 30% mod 400Hz
•FM SECTION
500mV/5kn.
380mV /5kn. (G)
150mV/5kn.
Tuning Range 87.5 to 108 . 0MHz
50dB Quieting Sensitivity (IHF, 75f2)
Mono 1.6µV (15.3d8f)
Stereo 22µV (38.1dBf)
Usable Sensitivity
30dB Quieting 75!2
Usable Sensitivity (DIN, 75f2)
Mono (S/N 26d8)
Stereo (S/N 46dB)
Image Response Ratio
IF Response Ratio
Spurious Response Ratio
AM Suppression Ratio
Capture Ratio
Alternate Channel Selectivity (IHF)
Selectivity (two signals) (DIN)
Signal to Noise Ratio (IHF)
0. 8µV (9.3dBf)
0.8µV (9.3dBf) (G)(B)(A)
25µV (39.2dBf) (G)(B)(A)
50d8
90dB
70dB
60dB
1. 5d8
55d8
60dB (G)
Mono 85d8
Stereo 81d8
Signal to Noise Ratio (DIN-UNWeighted)
Mono 80dB (G)(B)(A)
Stereo 76d8 (G)(B)(A)
Harmonic Distortion
Mono 1 kHz
Stereo 1kHz
Harmonic Distortion (40kHz Dev)
Stereo 1 kHz
Stereo Separation (I HF)
1kHz
Frequency Response
50Hz to 10kHz
Sub-carrier Product Ratio (I HF)
•AM Section
Tuning Range
Usable Sensitivity
Selectivity
Signal to Noise Ratio
Image Response Ratio
Spurious Response Ratio
Harmonic Distortion (400Hz)
•GENERAL
Power Supply
US & Canadian Models
General Model and R-70M
European Model
British & Australian Models
Power
Consumption
AC Outlet
Switched
Unswitched
Dimensions (W x H x D)
Weight
(U) ..... U.S.A . model
(C) ..... Canadian model
(A) ..... Australian model
0.1%
0.15%
0.15% (G)
40d8
±o.3d8
55d8
510 to 1620kHz (U)(C)
513 to 1620kHz (G)(A)(B)
510 to 1620kHz or
513 to 1620kHz (R)
250µV/m
25dB
52dB
40dB
50d8
0.3%
120V AC, 60Hz
11 OV, 1 20V, 220V,
240V AC, 50/60Hz
220V AC, 50Hz
240V AC, 50Hz
200W (U)(C)
320W (G)(A)(B)
120W (R)
200W max.
200W max.
435 x 122 x 386mm
(17-1/8 x 4-3/4 x 15-1/8)"
8.3kg (18.3 lbs)
(G)
.. ... European model
(B) ..... British model
(R) ..... General model
Specifications subject to change without notice.

• TO SERVICE PERSONNEL
(Prepared in accordance with UL Standard
1270)
Before service of this appliance by you, please
carefully read this service manual.
Please make Leakage-current or Resistance
measurements by suitable meter
to determine
that exposed parts are acceptably insulated
from
the supply circui1t before returning the
appliance
to the customer.
A PROBE WITH SHIELDED LEAD.
B SEPARATED AND USED
AS CLIP WHEN
MEASURING CURRENTS FROM ONE
PART OF APPLIANCE TO ANOTHER.
Confirm that the leakage current is not more
than 0.5mA AC.
• REAR PANEL
,.. U.S.A. & Canadian models
,.. General model (R-70M)
R-70/R-70M
LEAKAGE CURRENT MEASUREMENT CIRCUITS
Jv~-~~~ I
/~~ --- / GR~
S1 GROUNDING
~ OPEN ) ~_cNSULATl~G
L_ --------------;~ TABLE
GROUND SUPPLY CONDUCTOR B
Appliance intended for connection to a 120 volt power supply.
~~~~~~u l~o~' M
,;~J,l~IC ::~~~.
~ Q ~lijJ Q
,.. British & Australian models
,.. European model
R: illl :
~j Q ~lijJ Q
L;J : liftl ,
@YAMAHA
2.:iovo..rs
50Hl ~-
~~ ~Kl CO.,LTO
@YAMAHA ~'""
220VO,_~ 320WAT'f5
5QHz'\..
~~~~Kl CO.,lTD
2

I
3
R-70 / R-70M
L VIEW
•1NTERNA
TRANSFORMER . GA66450
0 POWER dian models .
66470
SA & Cana . GA
U· · · del · 66480
European mo . odels : GA
. . h & Australian m . GA66460
Bnt1s el R-70M .
General mod ,OARD (1)
@MAIN CIRC~~I~ BOARD (1)
A TUNER CIR
w END PACK
0 FRONT NTENNA
0 AM LOOP ACUIT BOARD (2)
A TUNER CIR
v SWITCH
0 POWER TK2250Y
(i) POWER IC: ~C · STK3061 y
0 PRE DRIVE 3~0
• MPX IC: LA37H (E, F)
• IF IC: µPC57 BOARD (3)
4B MAIN CIRCU . IT
numbered)
: f disassembly as
ts in order o tom cover.
RES (Remove par .
the top and bot
OC
EDU b removing
BLY PR . unit is possible y
DISASSEM I ost circuit boards in this ·ng Heat Sink
of am @) Remov1
I C
ement of the parts 4 p;pe Lock "© 'i©
•Rep a 11 / ' i'-- --._J
. Top Cover ~!~ j~~ I
CD Removing p nel ~ '· •
~ =:~~~:~~ ::~~~m
3
Cover l~ ililll~h°"i\
l lllllll 1t !o ~ ;pe Foxtuce
I lt 7i Block. !Heat Sonk
~ . Heats;nk · / I
v ·. I
Fig. 1
Fig. 2
\ . ., board 111
Tuner c1rcu1
Fig. 3

R-70 1 R-70M
ADJUSTMENTS
<CONFIRMATION OF AUDIO SECTION>
Before adjustment
Note 1: After the power switch is pushed on, wait for 5 minutes before measuring, to be sure of the most stable operation.
Step
Confirmation
1
Power supply voltage
2 Gain
4 DC
offset
5
PHONO amp
<TUNER ADJUSTMENT>
•Before adjustment
Test point
+8
-8
+16
-16
+12
+5
+a
-a
IC414, across pin 4
and E (Leh)
across
pin 13 and
E (Reh)
IC414, across pin 4
and E (Leh)
across
pin 13 and
E (Reh)
PL,PR
Rating or standard
Adjustment method
+43V ±av
-43V ±av
Make sure that AC line voltage
+16V ± 2V
comes within
-16V ± 2V
Models AC line voltage
+12.5V ± 1V
+5.5V ± 0.5V
u.c
120V ± 10%
+av± 1v
G
220V ± 10%
-av± 1V
A. B
240V ± 10%
+10V±1V
Apply a 1kHz,100mV sine wave
signal to the points "BL" and "BR"
OV ± 70mV
Apply a 1 kHz, 2.5mV sine wave
signal to PHONO INPUT
+120mV ± 20mV
Apply a 1kHz, 160µV sine wave
signal to PHONO INPUT
Note 1) After the Power switch is pushed on, wait for 5
minutes before measuring, to be sure of the
most stable operation.
•Measuring instruments abbreviation
FM SG : FM signal generate.
SSG : Stereo signal generator
AM SG : AM signal generator
Note 2) Adjust the OSC coil and I FT with a nonferrous
screw driver.
Note 3) Do not forget to keep the bottom cover on.
1. FM TUNER SECTION
OSC : Oscilloscope
DIST. M: Distortion meter
FC : Frequency counter
ACVM : AC volt meter
Remark
No load
----
PHONO
selector
set "MM"
PHONO
selector
set "MC"
•Use 200Hz to 15kHz bandpass filter to measure the
REC OUT.
•Set the switches to the following positions.
•On step 1 and 2 connect the auxiliary center meter
(Ji00036 or similar) in series with the resistor 1Okr!
between TP1 (S OUT) and TP2 (NVcc).
Auxiliary center meter
Step
Adjustment item
Connection
Instrument required
terminal
1
Discriminator
TP1 "'TP2
Aux iI iary center
balance adjust-
(Sout)(NVcc)
meter
ment
2
Station center set 300S1
FM
FM SG
confirmation
ANT
~98MH' ±1 kH'
l
70d8µ (75.2dBf)
MONO 1kHz
100% MOD
TP1 "'TP2
Auxiliary center
(S out) (NV cc) meter
3
Monaural distor- 300S1 FM FM SG
tion adjustment ANT
[98MH' ± 1 kH' j
70dBµ (75.2dBf)
monaural 100Hz or
400Hz
REC OUT
100% MOD
(TP6, TP7)
DIST. M. OSC BPF
INPUT . . . . . . . TUNER
Band Select . . . . FM
TUNING/MODE AUTO
VOLUME . . . . . Min
Adjustment
Adjustment method
Rating or
Remarks
locations
standard
T102
Adjust so that the
(DISCRI
pointer of the auxil-
CENTER)
iary center meter points
to 0 at detuned point.
TUNING SW
Confirm that the auxil-
~up or DOWN
iary center meter
deflects to 0 when
tuned to signal of
FM SG
VC101 Reduce
distortion to
Less than
Confirm that
(MONO DIST) minimum -64d8 all signal Q
Signal Q
indicators
light
I
4

R-70 / R-70M
Step Adjustment item
Connection
Instrument required
terminal
4
VCO adjustment 300!1 FM FM SG
I
ANT
[98MH' ±1 kH' ]
70dBµ (75.2dBf)
Unmodulated
TP4 "'TP5 Resistor 2.2Mn
(19M) (+12)
TP3 "'GND
FC
(19kHz)
5 Stereo
distortion
300!1 FM FM
SG, SSG
adjustment
ANT
[98MH' ±1 kH' ]
70dBµ (75.2dBf)
STEREO L, R
1kHz,100% MOD
REC OUT DIST. M, OSC
(TP6,
TP7)
BPF
6 Separation
confir-
300!1 FM FM SG, SSG
mat ion
ANT
r98MHd1kH' l
70dBµ (75.2dBf)
STEREO Lor R
1kHz,100% MOD
REC OUT
OSC, ACVM, BPF
(T.P6, TP7)
7
Pi lot cancel
300!1 FM
FM SG, SSG
adjustment
ANT
[98MHd 1 kH' ]
70d8µ (75.2d8f)
PILOT9% MOD
REC OUT
osc
(TP6, TP7) Disconnect BPF
8
If offset adjust-
300!1 FM
FM SG
ment
ANT
[98MHz ±1 kHz J
70d8µ (75.2dBf)
TEST termi- Short
nals
(K4, T6)
9
Auto search
300!1 FM FM
SG
reception confir-
ANT
[98MH' ± 1 kH' ]
mat ion
20d8µ (25.2dBf)
MONO 1kHz
100% MOD
2. AM TUNER SECTION
•Connect the AM dummy antenna for adjustment.
Step Adjustment item
Connection
Instrument required
terminal
I 1
Sensitivity confir- AMANT
AM dummy antenna
mat ion AM SG
l 400H,, 30% MOD l
50d8µ
630kHz ±0.1 kHz
1440kHz ±0.1 kHz
1080kHz ± 0. 1kHz
REC OUT
OSC.
(TP6, TP,7)
DST.M
ACVM
2 Signal Q
indica- AM ANT
AM dummy antenna
tor confirmation
AMSG
[1080kHz ± 0.1kHzJ
80d8µ
3
Auto search
AM ANT AM dummy antenna
reception confir-
AMSG
mat ion
[1080kHz ±0.1 kHz J
60d8µ
5
Adjustment
Adjustment method
Rating or
Remarks
locations
standard
VR103
CD Connect resistor 19kHz ±
Confirm that
(VCO)
2.2Mn between TP4
10Hz stereo indi-
(19M) and TP5 (+12)
ca tor Iights
and force the set in
up.
Stereo indica- stereo
mode. After adjust-
tor
® Adjust so that VCO
ing, remove
frequency is at 19kHz
the FC and
the 2.2Mn
resistor.
T101 Same
as step 3 Less than
(ST DIST)
-48dB
G model
only Less
than -33dB
-- ~ -
Confirm that the leak- Less than
age level of the
26dB
opposite channel is
minimum
VR102
Observe waveform on More than
(PILOT
the OSC and adjust so 46dB
CANCEL)
that carrier leakage
level reduced
to
minimum
VR106
By shorting TEST
After adjust-
(FM FINE)
terminals, the counter ing, open the
shifts by one digit, then TEST termi-
adjust so that the
nals.
lowest effective digit
comes to 9 or 0.
This figure
98.0MHz-c~g.·~
When shifting
TUNING SW Confirm that auto
Confirm
-+UP or
search reception is
that muting
DOWN possible
with the tun-
is performed
ing button.
at auto recep- I
ti on.
•When once the test terminals are shorted in adjusting
FM, the frequency
of 630kHz, 1440kHz, and 1080
kHz is memoried at each AM preset position 1, 2 and 3.
Adjustment
Adjustment method
Rating or
Remarks
locations
standard
Confirm the maximum
less than
sensitivity
55d8µ
PRESET
P1
P2
P3
Confirm that all signal
Confirm that
PRESET
Q indicators light
all signal 0
P3
indicators
Signal Q go
out at
detuned
point
TUNING SW
Confirm that auto
-+UP or
search reception is
DOWN possible
with the
tunning button.
I

3. DIGITAL CONTROL SECTION
Step Adjustment item
Connection
Instrument required
Adjustment
terminal
locations
1 Preset
memory
300D FM FM
SG
FM/AM SW
confirmation
ANT
[98MH' ±1 kH'
l
70dBµ (75.2dBf)
MONO 1kHz TUNING SW
100% MOD MEMORY SW
AM ANT
AM dummy antenna
PRESET SW
AM SG
[1080kH' ±0.1kH']
80dBµ
400Hz, 30% MOD
2
Last channel
POWER SW
memory confir-
mat ion
•TEST POINT
Main circuit board (1)
D
DD D420 J
490
,.},_ o~
@---@.. l..:!EJ u
DD ~ J497 -
DD
~
J499
DD ~
,.j • ~
A R528
~
IC415
IC414
1sloooooooooooooooo I,
R503
R501
~
-c:J-~
R-70,/R-70M
Adjustment method
Rating or
Remarks
standard
CD Memorige the PRE-
CD Press the FM button
SET P1 at FM SG
and tuned the 98MHz
frequency.
with AUTO seach
® Memorige the PRE-
+
SET P2 at AM SG fre-
Press the Memory
quency.
button.
@Confirm that the fre-
t
quency memorized is
The Memory indicator
recalled.
lights about 3 seconds
t
Press the PRESET P1
during the Memory
indicator lights.
t
The PRESET LED of
P1 lights.
® Press the AM button
and tuned the 1080kHz
with AUTO seach.
+
Press the Memory button
t
The Memory indicator
lights and the PRESET
LED of P1 flashes.
t
Press the PRESET P2
t
The Memory indicator
goes out and the PRE-
SET LED of P2 lights.
CD Press the PRESET P1
®Turn the power
switch off.
@After about 5
seconds,
turn the power
switch on.
©Confirm that the
@ The PRE-
PRESET P1 memorized SET of P1
not
is recalled. lights
Tuner circuit board (1)
VR106
:0
FM FINE
IC107 I
IC106 5
T6mk4
TEST
-c:::H!l
R159 ~
I FRONT END I
0 J~,~'"
T102 VC101
[QJ@NO
DISCRI DIST
CENTER
~ D~
@-il-
C171
rn
~
~
VR103
"'vco
~ tJ
VR102 IT.P!l -
PILOT D··~
CANCEL R152
!
I
6

-;-- ~~A ~ ~- l~~ ~B~~--L
R-70 / R-70M
c
• PRINTED CIRCUIT BOARD (Pattern side)
1
•Key circuit board (1}
2
•Main circuit board (2/5 ,..._, 5/5)
Main C.Board (3)
3
Main C.Board (5)
~
TR~2~
•
From Main C.Board (I )
4
From Main C. Board ( I )
Main C. Board (2)
VOLUME-©- BALANCE
5
PHONES
,.....,,(_( __ ,. From Main C. Board( I)
[fu' i'I" ----=----.:o 1I
From Main C. Board (I)
SPATIAL EXPANDER
10 5 0
Main C.Board (4)
6
7
D

A
(Pattern side)
•Main circuit board (1/5)
11
...,
0
3
3:
0
3·
()
OJ
0
0
...,
a.
2
,......,
(JJ
~
31
fT1
~
0
::0
-<
c
"'O
1a
d(/)
z
ITI
I
0
0
~
z
4 l
( N I ~~ - ~
C;fj ,: : r Jl C449
+"" j L-J''I · ~
-I
0
s:
0
::J
()
OJ
0
51 0
...,
a.
,......,
(JJ
6
B
11
...,
0
3
3:
0
:::J
()
OJ
0
0
...,
a.
.......
(JJ
r
-I
0
3:
0
::::>
()
OJ
0
0
...,
a.
,......,
~
l
c D
To Key C. Board
From Key
C. Board
From Tuner C.
Board { I )
E F
To Main C.Board {3)
From Tuner C.Board (2)
G H
R-70/R-70M
~ z
0 ""O
~ c
~ ~
i;!
1 1 ~ ~
CD
""O
::0 ,,,
fT1
(')
I\)
0
c
-t
-t
l>
~ };!
di ""O
::0 ,,,
fT1
(')
0
c
-t
. jij;N~~.-JTR428 l w~ ·· i-~· · ~ J ~ ~ ai~~·~ J t~ ~~
~ · ·. TR-l~~ J~ r!t J~ ~J ~ · ~ [ - ~ ·- I - - N - -- , ij II fl t ~1
~~~~ _- -:J .,.
2.,
wa --:-" ~ - .. ··' J.· !! ~= · , ~· · _ ,., _ .. , .... .. -· l ul
l
To Main C. Board (2)
From Power Transformer
@
CD
®
(/)
""O
,,,
l>
::;i;:
,,,
::u
@ (/)
l>
®
The following parts and values differ from each
model, so refer to the corresponding column.
C401 "'406
C513.514
C529, 531, 533
535.537
J641
D A R u. c. LRI G
Set
8

2
3
4
5
6
9
A
R-70/R-70M
(Pattern side)
•Tuner circuit board (1/2)
B c
FM ANT AM ANT
750UNBAdL300.nBAL GND
D
,......
ro,.....
- >..
"O -
.... c
0 0
o_
m G>
. 'U
Uo
a; E
C-
::J 0
I- a;
E ~
o~
~-
"O
....
0
0
m
F?>-rilfil ,. • ~ •. . "' - +.r ~ I· .. u
To Key C. Board
>..
Q>
~
{:.
E
INPUT
PH ONO
• Tuner circuit board (2/2) (0 ®
F G
Tuner C.Board(3)
(General model
~ - I ~tt--f ~ 2' ~ II
0
li ~. lll ~t ~ I and R-70M)
0 -
al ._.. l.J• ' b!I~ ~ - ~2
U
~ ~ "11 _ J ETRI J. - ~
0
- G - 12- .... ~ ,...... To Tuner C.Board (I)
o r I " ~ 301 -1 · ~ - f' ·) _ t
>.. 0 1Tlfl . - ~ ' 0 0 ~ - -
Q> al liRl48 ~ ' R!Op~ ~ "O
~ u l' 2JIJ!; 1 t ~~~ -:: t:.!. '- i ~ ~ J
1
]
5
R!pc- TR1§ ~ 5
E ._ il j :t r- Ol.l trr t= 111 i i o
0 Q> _J_ l - - '(;;j,,_ ;;,_, lf") ~ I') -I ~~ n · m
L... c ll a: l'-'. iii D: 1£ -
LL :::J ' - -. ~ ~ ~ I ~R 6 u
1- , o ~l u f95~;;;f i1 ~fi L -..,,o c
I
~ l4~~ <f" J.~~991l: - ~ =
E :fff-- N ~ - • 2J.. ~ R2lil8 0
o ~ ~ ~99+-~ cm -"'T ~ :iE
._ D:1'J~.6 ~... ~
LL m;~kJ ~- fuJ.. ~ ;' .,~J~ . ~r ~ r - ~ ~~f {!. FREQUENCY STEP
I ·.·· 1 ' i~~ T~ , ;.t~ J..:.~ '' i 1~ ~ ~ t
1
!"' r FM 50kHz IOOkHz
~ ·- ~ • -"1' ~'I"" •t -:n >~ AM 9kH' IOkH•
H
:1•-tt _,,,. ,,.....__. To Main C. Board ( I )
The following parts and values differ from each model, so refer to
the corresponding column.
G
C203.204
~ ~ ~ ..,,~ . ~ ' b · ~.~......, _ "-- I • To Key C. Board T103
~=•;· J · r M'I' "' ::: 1 ... To Tuner C.Board (2)
PiN CONNECTION DIAGRAM OF TRANSISTORS, DIODS AND ICS.
25A777
25A970 (GR, BL)
25A999 (E, F)
25A 1127 (R, 5, T)
25C1923
25C2320 (E, F)
2.SC2634 (R, 5, Tl
250786 (Q, R, 5l
250656 (D, E, Fl
2SD1012 (G, H)
2501302 (R, S)
~
CB
15584 HZ9A-1
25C982 151555 HZ12B2
2SC1509 (P, 0, R,
5l
152473 HZ18-IL
2SC2878 ~ ~g~~~
~~Anode
ECB Cathode
40481
RB402 (LFD)
S4VB20
@
258507
25C1983
2SD313 (E, F)
SIRBA NJM4558DV
.P
E
~~
µPC577H (E, Fl
~
M54459L
M5219L
M521~L
M5220L
8
I
LC4066B
.µPD4066BB
L109.110
L107, 108
R283,284
R285,286
R129
R131
SW101
R132
J161
J163
C103,104
R282
TUNER (3)
J240, 243 -·- - -· - -· -
5TK3061 Y
~
LC~I~
~JI'·-· CE
I
LA3380
~
.
LC
. 650 .2-C ... -6 .0 ..-4
10 ~LC6505C-612 . /
2 / "
.~<,-
5TK2250Y

A L
•SCHEMATIC DIAGRAM
1
LJU~R .. 1._I -----
-
75 0
300.0.
2
----i
3
4
.. "
5
6
7
• SEMI VARIABLE
RESISTOR
s •BLOCK DIAGRAM
9
10
•Tuner Section
AM LOOP
ANTEN"IA
c::::::J ln -o
__ __J
PRESCAUR
,__ _______ _
B c
CADJtC\mR
-·· ·-------
REMARKS I ______ !':~RT~~AME _____
~l NO
MARK' ELECTROLYTIC CAPACITOR
NO MARK
CERAMIC CAPACITOR '
;--®
POL YESTE!-_~-~PACITOR
0
~
"
• SEMICONDUCTtVE CERAMIC
CAPACITOR
I
ID
MICA CAPACITOR
FM If
f:~HAM«.
FILTER 3STAGE
If CEnAM•C 1STM,E If AMP WIDE AANGC
-i>l~>+-'i-J~.'.'" 1""
0
"f";;~"'"_ -
I~--
r AM
OG'
------:---------\"'
L[J, ..
S\JFFER I NOISE NOISF
OETEG'
C~MAMIC '
"
OFFS~f
CONTROL
----le-MOS
------; Tl'NINO
K:ic
I
STATi0N :
CETECTOR i
t{ill !
: S GIJR\IE
l CO'JTR0i..L£R
.~~-
'
PHO' GJ
CANGE L
COl>TROLLER
CHARGE DIS
CHARGE
lOO~fllHH
"'
' '
Oll>ITJ-~
DR•VEn ---1---------
" '
OAlA 11-tii-
--- ----------- -----v
O>G, f DATA
( '·10~
4il•TMCRO
COMPtJ'fl
m
~ONfHOllEEl
llACK UP I FMS AMB
i I
LtJ
--------<
POWER ON•OH fM A"~
T'MINGCON-Cfi<)• B VOLTAGE
[QNfROL
F G H J K
·~-----· --------
- - -
-
--
--
---
--
--
--
SELECTOR --
IC401
IFr.;_
--- -
--
p.r.." ~"'1· 11:
~rr--~··~-~~I i' O :; ~11i
I I !
I ~'!,,~~.of
~~;!,~>ol
TAPE2
R~05 1
l~OTE)
'"""''
:--t 2K~
~7'
' 1SOP
II I •
I
I
I
II I
2SC2320 (E,F>or 2SC2634 (R,S.T)
TR101,111,113,114.116, 118,121"-'124,127"--129, 131,132,
134,137, 13.8,142 ,143,147,149,420rv422,424,426,427
TR112,119,125 ,126,133 ,135,136,tJ9.-._141,144 -vt46,148,
408 '°'-'419 ,423 '428
0101,104,108rv111,113-....116.417-v430, 437
2SA999 CE,F J or 2SA1127 (R,S,TJ
1S1555or 152473
•Audio Section INPUT SELECTOR
r---------,
FROM _ I t><J I
TlJNER SECTION~ I
I I
EQAMP I I I
I ' I
··~+f;;BT~:~
i ~ ' I
b :rf I :
' ,/' I I
lT
MM/I I
l' JMCSWj I
: I j....w. : :
& + i I
PHONO
-+--
l '
Vt:JEOIAUX @ I-~-~
TAPE~:::~------~--··_' wI I
I
I
I
I
I
I
I
I
REC @-- ---t
TAPE 2 !
PB(Qf-------_.;'
I 1 I
g:a.,~
L---------...J
'·
ccss
r-----,
I l?f I
I 'I ~·
I : , B'.B I
FLAT AMP. I LOUDNESS I I
r
f>-lc£2:T Jvf i ·~ J
~ BASSI I
l"-f i g:2j :·
VOLUME
PRESENCE : :
~·j-.;
I I
TREBLE I I 1
~
, HIGH I I
' FILTER I I
I
l INPUT SELECTOR
DATA
C·VIOS 4 BIT
MICRO
C.:JMPUTER CCSS
DATA
fAPE
MON! I
© ©
TAPE
MONI 2 '"
(',omputer
(:on•rolled
'
S<1und System '
"' 0
' MEMORY
@ '
_,,
eASS
© @ @
PHONO TUNE A
© © ©
VIOE'OiAUX
© © © © ©
© © @ © @
-------------- ·---- ---------
© © © © @
© © © © @
@ © © © @
@ © © © @
© © © © ©
" "' " " '"
"'
TRE6LE TONE 1
TONt 3
Ci!
© © © ©
'"
'
'
SEGMEN r
DRIVER
SEGMENT
DATA
---·-'
ccss
COWTROlL!::R
O!GIT DATA
1 KEY
DATA)
: r-y ~--~
TAPE' Tl\Pf 1 PHONO AUX TUNEfl
r r r r r
c 0 0 0 0
' '"
BASS TREtLE TONE 1 fONE J
'
'
" -
r r r r r r r r
00000000
lOIJONESS PRESENCE HIGH TON( 2
r1LTER
r r r
0 0 0
DOWN UP MEMORY
LOUDNESS PRESENCE HIGH
TONE 2
I
FILlER
('I
··-
D!f;IT
DfllVEfl
-,__ ___ ,------------·----
SUBSONIC FlL TER
+16 ......
412 ..
'
Reh
STABIUZEO
POWER
SUl'l>LY
STABILIZED
POWER
SUl'l>LY
"
' IPC.LIMITER l
l AMP,
t--------~~
'
-B
•
DC
PROTl'CT10N
THERMAL
PROTECTION
H
~-·-------
SPEAKERS
~'~-+~lo
++o
. Io
"'i lo
B
M
..
--
--
-----
-
-
--r--·---
-
-
-
-- --
SPAT!AL EXPANDER
r-.\--"-il
1®
+
n ~ • ., •4"" i;
0 15 VO• ,/SP
"''"
U>
" c
""
1
""'
44~ "
IC413
STK3061Y
This schematic diagram 1s for U.S. and Canadian models. The following parts and values differ from
each model, so refer to the corresponding column.
f cf1of,-104-~·tsFE1~'.7L~MH-Z-FsFET~7-~MH~z-
C103, 104 Open · Open
C121, 122 820p 820p
C127 680p 680p
C133,134 680p 680p
C164 0.022 0.022
C203, 204 Open Open
C207.208 220p 220p
C213, 214 68000 6800p
L107,108 Open Open
L 109, 110 Open Open
T103 Open Open
T104, 105 GE90122 GE90122
R129 Open Open
R131 15k 15k
R132 Open Open
R135, 136 47k 47k
R157, 158 10k 10k
R159, 160 10k 10k
R185 100k 100k
R207 1k 1k
R282 1k 1k
R283, 284 Short Short
R285, 286 Shor: Short
R289, 290 220 220
R323 680 680
R324 1k 1k
C401 ~ 406 Open Open
~f3;514 Open Open
I C529, 531,
533, 535,
537
Open Open
' AB G
+ SF E fl'.i .7Mtrf1-=r:-;r ~ -s FE1 0. 7 MS3G H y- z-·
Opi:!n ' 270p ·
820r 2200p
680p 1000p
470p 470p
0.022 0,01
Open 100p
220p 470p
6800p 0.022
Open 15µ.H
Open 220µH
Open Set
GE90122 GE90121
Open 220
15k Open
Open 12k
47k 39k
10k 5.6k
10k 33k
100k 120k
lk 2 2k
1k Open
Short
33
Short 560
220 2.2k
680 220
1k 680
Oper1 330p
Open 0.022
Open
0.022
R401 '""406 220 220 220 2.2k
~ '£ +- Qpen Short I Open Open
L;CUCNC,,C~C~C-Cl3ol~ ____
0
ct_:_t ___ L_ ___ ~~~~__L--~-~~-r-~-~·---
0
_
0
_'_" ___ _
*Schematic diagram is: subject to change without notice.
FM/AM SELECTORS -~ FM
FUNCTION -"" TUNER
TUNING/MOD£ ~ AUTO
*All voltages are measured with a TOMSi!V DC electnc vo!t meter.
The voltage ir1 the tuner section are measured in FM reception mode.
Only the voltages at TR113 ,.__. TR121 are measured 1n AM reception rnode.
•WARNING
UL Standard 1270 requires that components marked 6 be replaced with
parts having specifications equal to those originally installed.
v
GENERAL MODEL AND R-70M
X R70M Qnl~
AUSTRALIAN a BRITISH MODELS
!1
'
ii
11
'
fI''
'
ij
:043
SIRBA
r
R-70, R-70M
II
B
EUROPEAN MODEL
iTIJNER(31I (R,LR models)
rem
I
SW'"' I
FREOUENCY J
I STEP
L-----
U US A model
C Canadian model
A Australian model
G European model
B British model
R General inodel
LR General model (R 70M)
10

PARTS LIST
ELECTRICAL PARTS
Ref.
Part No. Description
No.
NA
:00:11:00
Tuner Circuit Board
NA
!00!11!90
II
NA : 08 : 18 ; 00
II
NA : 08 ; 18 ! 10
II
FG
!41 !21 ioo
Ceramic Cap. 100pF
FG
!41: 22: 20 II
220pF
FG
:41 :24 :10
II
470pF
FG
i4 1 !22 i10
II 270oF
FG
!41 :31 :oo II
1000oF
FG
!44!41 :oo
II 0.0111F
Fi i 19i12 !20
II
22pF
Fi
:19!21 :oo
II
100pF
FG
!21 i31 ioo
II 1000pF
FG
! 21i24! 70
II
470pF
FG
: 21: 34; 70
II
4700pF
Fi
! 22!41 ioo
II 0.01,,F-
Fi
!22!41 ioo
II
0.0111F
Fi :22!42:20
II
0.022,,F
Fi
i22i42i20
II
0.022,,F
FS
i25i26i80
Semi Conductive Ceramic Cap.
680pF
FU
: 35: 12: 70 Mica Cap. 27pF
UA i25 i 24 i 70
Mylar Cap.
470pF
UA i 25 i 26 i 80
II
680pF
UA i 25 i 26 i 80
II
680pF
UA i 25 i 31i00
II
1000pF
UA i 25 i 31 i 50
II 1500pF
UA i 25 i 28 i 20
II
820pF
UA i 25! 32! 20
II
2200pF
UA i 25! 36! 80
II
6800pF
UA i 25 i 42 i 20
II
0.022µF
UA i 25! 41 i 00
II
0.0111F
UA i 25 i 41 i 50
II
0.015,,F
UA i 25i 41i 60
II
0.016,,F
UA i 25! 44! 70
II 0.047,,F
UA i 25! 45! 60
II
0.056"F
Ui i 91i91i00
Electrolytic Cap.
100011F
uwi 91!74i10
II
47"F
UWi 91 i 82! 20
II
22011F
uwi 93! 11 i oo
II
1011F
uwi 93! 73! 30
II 33,,F
uw: 93: 74: 70
II
47,,F
uwi 93! 82! 20
II 220,,F
uwi 94! 64! 10
II
4.7,,F
uw: 94: 81: 00
II
100,,F
uwi 96! 54i 10
//
0.47,,F
UWi 96i 61 i 00
II
111F
uw: 96: 62: 20
// 2.211F
uwi 96i 63i 30
II
3.3,,F
FY
: ooj 01: 90
Trimmer Cap. 5P
GE j 10: 02: 80
FM Discriminator Coil
GE j 10: 06: 50
FM IFT Coil
l8' New Parts (frjlSf!.H,)
•WARNING
R-70 / R-70M
UL Standard 1270 requires that components marked ...h be
replaced with parts having specifications equal to those
originally installed.
•Carbon resistors of this receiver are %W.
There is no discription about them in this parts list.
Use the "Part No." HJ350000or equivalent.
91!
&la
ti
Remarks
~ .::z. -:.1"-~-
"
II
II
II
50V
-t? 7
:::J
:,...
C203,204
50V
II
C207,208
50V
II
II
50V
II C103, 104
50V
II
C169.179
50V
II C128, 178.182,223
50V
II
C185,186
50V
II
C124.125
50V
II
C120.159.196
50V
II
C194
50V
II
c 132, 14 1, 142
25V
II
C114-118,154-157,160,161.
165 167 168 171 180
25V
II
C164
25V
II II
25V
II
c 135.153, 158
50V
s A
:::J
:,...
C136
500V
";;'
1'
1J
:::J
:,...
C181
50V
";;' 1' 7 -
:::J
:,...
C133, 134
50V
II
II
50V
II
C127
50V
II II
50V
II
C126
50V
II
C121.122
50V
II
//
50V
II
C213,214
50V
II
II
50V
II
c 138.139,205,206
50V
II
C197
50V
II
C219,220
50V
II
C172,195
50V
II
C217,218
6.3V
?-
~
:::J
:,...
C215,216
6.3V
II
C193
6.3V
II
C123
16V
II
C102.119, 129, 130, 149, 163.170,
175,183.189
16V
II
c 150.162, 166, 190
16V
II
C191,211,212
16V
II
C192
25V
II
C209,210,221,222
25V
II
C187,202
50V
II
c 173.174.184,200
50V
II
Cl 31,137,143,144,151, 199
50V
II
C152,177
50V
II
C188,201
"
IJ
";;'
-
:::J
:,...
VC101
F M 7' -< .A 7 •J :::J 1' Ji-
T102
FM IFT
:::J
1'
)1'
T101
Common
Model Markets
R.LR
u.c
A.B
G
G
R,U,A,C,B
LR
G
G
G
R,U,A,C,B
LR
A,G,B
R,U,C.LR
R,U,A,C,B
LR
G
R,U,A,C,B
LR
G
H,U,A,~.ts
LR
G
11

R-70 / R-70M
Ref.
Part No. Description
81!
.IL
~
Remarks Common Markets
No. Model
GE : 20: 04: 30
Anti Birdie Filter 114kHz
7'/"'fJ\-7-t-7-1 JI-~-
T103
G
GE i so: 12: 10
Low-pass Filter
5.6k : 33k
Cl - "-\ .A 7 1 IL- 1 - T104,105
G
GE! soi 12! 20
II
10k : 10k
II
T104,105
R,U,A,C,B
LR
GE j 30 j 04 : 50
Inductor 1
mH
-<
:,.;
~
7 1 -
L105,106
GE! 30 ! osi oo
II 12 µ H
II
L 103.104
GE i 30! 05! 10
II
120 µ H
II
L101
GE j so j 03j 30
220 µ H
7-
3 -7
:J
-<
, ....
L 10S,110
G
GEiso : oa i 4o
15 µ H
II
L107,10a
G
GE j so j o6 j so
RF Inductor a.
2mH
R F
-<
:,.; ~ .,
1 -
L102
GG ! DO ! 04 ! 20
AM Ceramic Discriminator
CDA450A
AMi?7 ~ ·;1 ? 7-< ;;r. ? IJ
CF106
GG j oo j o6j 20
FM Ceramic Filter
SFE10.7MS
FMi?7 ~ ·;177-< JL-1-
CF101,104
G
3GHY-Z
GG ! oo ! 06 ! 30
II
SFE10 .7
II
II
R,U.A,C .B
MMH -Z
LR
GG i 00 ! 06 ! 60
AM Ceramic Filter SFU450BS A
Mi??~ ·;1? 7-< Ji,..1- CF105
HF: a5 j 41 j OO
Carbon Resistor
10Q 1/6W
"j] -*
:,.;
~ tt
R307,3 0a
HF i as : 43 ! 30
II
33Q
II II
R2a3,2a4
G
HF j as j 45 j 60
II
S6Q
II
II
R2SS , 300
HF j as j 51 j OO
II
100Q
II II
R134 , 176,287,288,315 , 316.
321,322, 191
HF i as : S1 i SO
II
1SOQ
II II
R11 S,30S,306
HF j asj s2: 20
II
220Q
II II
R16S,272,2a1
HF: as : s3: 30
II
330Q
II II
R120, 214
HF ! as :SS! 60
II
S60Q
II II
R2aS,2a6 G
HF j as j sa: 20
II
a20Q
II
II
R172
HF:as:61:00
II
1kQ
II
II
R147,1S0,277
HF i aSi 61 ! 20
II
1.2kQ
II II
R14S
H_F j as j 61 :so
II
1.SkQ
II II
R1 a6,2SS,2S6,301 ~304
HF j as : 61 : ao
Carbon Resistor
1.akQ
II
R1a2
HF i as : 62 ! 20
II
2. 2kQ
II II
R2S7,2S7,2Sa
HF j as ! 63 ! 30
II
3. 3kQ
II II
R24S,26a,270,2aO
HF : as j 64! 10
II
4. 7kQ
II II
~-rn1 .1 27.167.170.196 . 253.
HF ! as ! 65 ! 60
II
5. 6kQ
II II
R30S,310
HF : asj 66 1 ao
II
6.akQ
II
II
R12S, 126, 27a
HF j as : 6a j 20
II
a.2kQ
II II
R275
HF! as : 71 !OO
II
10kQ
II
II
R141, 142,165, 174,200,205,
22 7, 228,248,251 , 269,271
HF j as j 11 j so
II
1SkQ
II II
R12a,1 S0,204
HF : as : 12 j 20
II
22kQ
II
II
R146,22S,226,240
HF ! as i 72 ! 70
II
27kQ
II II
R16a,262
HF : as j 73 : 30
II
33kQ
II II
R14S,2S6
HF jaS j 74 j 70
II
47kQ
II
II
R171,220 , 244,246,31 S,320
HF i as !J3 ! SO
II
3SkQ
II II
R261
HF : as : 76 j ao
II
6akQ
II II
R276
HF j as j a1jOO
II
100kQ
II
II
~~ ~~2~ ';"jz~~~2~ ~:32~g.:!.;~~~:~~~:216.
274 .l91-...,.294
HF : as : a2 : 20
II
220kQ
II II
R133, 1S7,201,210,212,23a
HF i as ; a3 ! 30
II
330kQ
II
II
R23S, 260
HF j as j a3 j SO
II
3S0kQ
II
II
R32S
HF ! as i a4 !JO
II
470kQ
II
II
R1 75, 20a , 202 ,2SS
HF jasjs1 joo
II
1MQ
II
II
R247,2Sa
Hu 1 s1 1 a1 : oo
Metal Film Resistor 100kQ
* •
it
•
~ tt
R22S
HT j 31 j oo j so
Semi Variable Resistor
85kQ
• Iii ~
~ tt
VR106
HT j31jooj20
II B10kQ
II VR103
llE New Parts (fr1i.Ull.H.)
12

R-70 / R-70M
Ref. Part No. Description
all
£ .t, Remarks Common Markets
No. Model
HT i 37! 00 30
Semi Variable Resistor BlOOkQ *
llil
:iE ~ #i:
VR102
iA !09!10
00
Transistor 2SA970(GR,BL)
~ 7
;:....
y A
,,
TR120
iA
!o9! 99! 10
II
2SA999(E,F)
II
TR112, 119, 125, 126,133,
} Inter-
139-141 .144-146.148
iA :
11 !21!00
II 2SA1127(R,S,T)
II
II
changeable
iA i
o9i 99j 10 II 2SA999(E,F)
II
TR135,136
iC
i 19! 23! 00
II
2SC1923
II
TR117
iC
i 23! 20! 10
2SC2320(E,F)
TR 101. 1 1 1. 1 13.1 14.1 16,1 1 8.
II II
121---124.127--129, 131. 132,
} Inter-
134,, 37.138,142.143.147.149
iC !26!34!00
II
2SC2634(R,S,T)
II II
changeable
iD
!oa!55!oo
II 2SD655(D,E,F)
II
TD109, 110.115 l
l 1oj 12joo
Inter-
iD
II
2SD1012(G,H)
II II
j 13[ 02! 00
changeable
iD
II
2SD1302(R,S)
II II
iD
j07j86!00
II
2SD786{Q,R,S)
II
TR151-154
iF
!oo!oo!4o
Diode 1S1555
~
-<
* -
I-'
0102, 103
iF
! ooj oo! 40
II
1S1555
II
0101,104,108-111 lI
113 -1 1s nter-
iF
! ooj osj 10
II
1S2473
II
,, changeable
iF
i OO! 18! 40
Zener Diode RD3.0EB2 •:;:r.-r-,,·-<:it-
I-'
0107,112
iF
: oo: 29j 90
II
HZ7B-1L
II
0105, 106
iG
! ooi 13! 90
IC NJM4558DV
I c IC103
iG
i02! 92! 20
II
LA3380
II
IC104
iG
j 03j 45j 00
II
11PC577H(E,F)
II
IC101,102
iG
i 04! 14 ! 00
II
M54459L
II
IC105
iG j 04j 91 j 00
II
LC7210
II
IC107
iG
l o8j 53j oo
II
LC6502C-604
II
IC106
iG
! 09! 21 i oo
II
M5219L
II
IC107
KA j 4oj 09j 40 Slide Switch SSB-022 A 7
-<
I-'
A -(
".I 7- SW101
R,LR
KA i 90 j 51 j 80
Remote Switch SSR2635 IJ
~-
~
A -(
".I 7- SW102
PH ONO
LB j 20j 24j 90
Pin Jack
2P
I::"
;:....
y
~
".I 7 PJ101
au j ooj 39j oo Quartz Crystal Unit 32kHz * A •
lb
+ XL101
PA i ooj 01! 50 Front End Pack FE529U12 7
Cl ;:.... ~ ;:c ;:.... ~· "' •y 7 PK101
LA 1 ooj 39j 90
Antenna Terminal
5P
7
;:....
7 -j-
~
+
ti
~RU,A,C,B,
LA i OO! 40! 00
II
5P
II
G
LB j 20j 13j 90 2.5Pitch Base Pin
TEB2P-SHF 2.51::" ·y 7-"" -A I::'.';:....
LB j91j20j50
Short Plug
5P
i-Type y
:I
- ~
7 7
"/
LB j 91 j 20j 90
II
9P
i-Type
II
LB j 92j 10j 40
Connector Plug
4P i-Type
:i
*7
,,
-77
"/
LB 192j 10j 60
II
6P
i-Type
II
LB j 92! 10j 80
II
BP
i-Type
II
LB j 92110j 90
II
9P
i-Type
II
NA j 08j 10 j 80
AM Coil Pack A M
:J
-<
'" "' •y 7
: :
:
NA j 08j 19j 00
Main Circuit Board >
-<
/ y -
~
R.A,B
NA! oaj 19j 10
II II
U,C.LR
NA i 08j 19f 20
II
II
G
FG j 41 j 05 j 00
Ceramic Cap.
5pF
50V
-t?
7 :J
;:....
C409.410
FG j 41 j 13 j 30
II
33pF
50V
II
C490,519,520
* New Parts (ff#UI!&)
13

R-70 / R-70M
Ref . Part No. Description Common
No.
ms ~
~
Remarks Model Markets
FG ! 21 ! 21 ! 80
Ceramic Cap 180pF 50V
-I?
7
:J
:..- C521,522
FG: 41 : 21: 20
II
120pF
50V
II C467,468,471 ,472
FG !41: 22: 70
II
270pF 50V
II C407,408,427,428
FG
: 4 ij 23: 30
II
330pF 50V
II
C401-406
G
FG
! 41 ! 24 ! 70
II
470pF
50V
II C443,444
FG
!41:2 5!60
II
560pF 50V
II
C451,452
FG
: 41j 31j 00
II
1000pF 50V
II
C447,448
FG
: 41: 32: 20
II
2200pF 50V
II
C473,475
FG
:44:42:20
II
0.022.11F
50V
II C496,504,511,512
FG
!44! 42 ! 20
II
0 .0 22 11 F 50V
II C513,514,529,531,533,535
G
FZ
: oo: 35: 80
Electrolytic Cap.
47000 µF
5.5V T ' :J
:..-
C491
FZ
! oo j 41 ! 20
II
8500 11 F 51V
II C509,510
} Inter-
FZ
j oo! 41 j 40
II
8500 r1F
55V
II
II
changeable
FA
: 15: 33j 00
Mylar Cap.
3000pF 50V 7
-<
7 -
:J
::,...
C434,437
UA ! 25! 32! 70
II
2700 pF 50V
II
C413,414
UA !25! 34! 70
II
4700pF
50V
II
C435
UA : 25 j 41: 00
II
0.0111F
50V
II
C423,424
UA ! 25! 31! 50
II
1500pF 50V
II
C419,420
UA j 25j 42 j 20
II
0. 02211F
50V
II
C429-432,477~<HJU,
525-528
UA ! 25!45! 60
II
0. 056 .·iF 50V
II C538
UA ! 25! 46! 80
II
0. 068 ,11 F
50V
II
C425,426
FA: 15: 47j 50
II
0.075 .11 F 50V
II
C421,422
UA j 25: 43 : 30
II
0.033 . 11 F 50V
II
C465,466,474
UA ! 25! 51 ! 00
II
0 .1,11F 50V
II C417,418,483-4a6
UA ! 25! 51 ! 50
II
0 .15r1F 50V
II
C433,436
FA : 15: 54 : 70
II
0.47,11F
50V II C415,416
uw~ 91j74 ! 10
Electrolytic Cap.
47 11 F 6.
3V
T '
:J
::,...
C498
UW! 91! 81! 00
II
100r1F 6.3V
II C455,456,489,497
uwj 91!84!10
II
470 11 F 6.3V
II
C495
uw: 82: 92 : 20
II 2200 . 11 F
10V
II C494
UW! 92! 72! 20
II
22 µF
10V
II
C492
uw: 93 : 81 : 00
II
100 . 11F
16V II
C487,488
uwj 94 1 64 j 10
II
4 .711 F 25V
II
C438,440
uw j 94j 11 1 oo
II
10.11F
25V
II
C439,499,500
uw: 94: 74: 70
II
47 11F
25V
II C411,412,441,442
uw j 94! 81 : oo
II
10011F
25V
II C507 ,508,523, 524
uwj 94j s3j 30
//
33011F
25V
II
C505,506
uwj 94! 92! 20
II
220011F 25V
II
C501
uw : 96! 54: 70
II
0.47 11 F
50V
II C493
uw j 96 j 61 ! oo
II
1 11 F 50V
II C449,450 , 51S-S18
uw: 96 : 64 j 70
II
4.7 11 F
SOV
II
C4S9.460
uwj 96j 11 : oo
II
10 11F
SOV
II C463,464.469 .4 70,481,482
uw j aa j 01 ! oo
II
100 11F
50V
II
C461.462
I
GD ! 90 ! 03! 40
Output Coil 1.S 11 H
7? ~ "f ' :I
~:::J{.IY
L401,402
HF
: as: s1: oo
Carbon Resistor 100.Q 1/ 6W
'fJ
-
;f.
::,...
tfi tt
R42S,426,601,602
HF
j a5 ! 52: 20
II
220.Q
II
II
R401-406
R,U,A,C ,B
LR
HF
j asj 62j 20
II
2. 2k.Q
II II II
G
HF
j 85j s2: 10
//
270.Q
//
II
RS82
HF
! a5: ssj 60
II
560.Q
II II
R429,430,515-S1 a
HF
j 85j 61: 00
//
1 k.Q
II II R417,41 a,481,482
HF
: a5j61 j 20
II
1. 2k.Q
II
II
R4SS,456
lit New Parts (ffi~ill!~)
14

R-70 / R-70M
Ref. Part No. Description Common
No.
ii! dli
~
Remarks Model Markets
HF : as : s3: 30 Carbon Resistor 3.
3k.Q
11 6W
.,,
-* /
~ tt
R421,422 , 61 1, 612
HF i R~ i s3 i so
//
3. 9k.Q
//
//
R473-476 .477 , 478.495.496
HF : as : 54 ; 70
II
4. 7kQ
II II
R407-409.451.452,463-466
HF i as!asiso
II
5. 6k.Q
II
II
RS75
HF : SS : 66 : 80
II 6.akQ
II II R44S,446.4 70,4 71
HF ; as ; 6a ; 20
II a.2kQ
II II
R431,432, 599 , 600
HF : SS : 71 : 00 II 10k.Q
II
II
~~~7 ·~~~ · ~~~5'}'12.453.454 ,
HF i as i 71 i 20
II
12k.Q
II
II
R423,424
HF : as : 71 ; SO II 1Sk.Q
II II
R467,46a
HF : as: 1s: ao
II aakQ
II II RS89,S90
HF i as i 73 i 30
//
33k.Q
II // R457,4Sa
.
HF : as : a1 : 00 // 100kQ
II //
R419.420.469.480 , 535 - 538,
563,572 , 576 - 5 79 , 609 , 610
HF i as i a1i 20
II 120k.Q
II II
R411-416
HF ! as i a2i 70
II
270kQ
II
II
R603, 604
HF : as: a3: 90
II 390kQ
II II
R459,460 , 5a4
HL i 71 i 34i 70
Metal Oxide Film Resistor 4.
7.Q 1P
llt
•
~ tt
RS27-530
HL i 31i 64i 70
II 4. 7kQ 1P
II
R493,494
HL i 32 i s2 i 20
II
220Q 2P
II
RS31,S32
HU i OJ! 62i 00
Metal Film Resistor 2kQ
RE3S
• • • Ill
~ tt
R607,60a
HOi 42 i 02 ~ ao
Slide Variable Resistor
BSk.Q
.A 7 {
"'
v R VR402
SPATIAL EXPANDER
HS i 31 i 2oiao
Variable Resistor
iiJ ~
ti
tt ft
VR401
VOLUME, BALANCE
HW S9 i 34 i 70
Fuse Resistor 4.7.Q 1/ 4W
I::
.'.l.
-
;;{
~ tt
FR401-403
HW S9i S1 i 00
II
100.Q 1/ 4W
II
FR404-407
iA :
07 : 77:00 Transistor 2SA777
~
7 / :.; .A
'?
TR405-407
iA i
09 i 99 i 10
II
2SA999(E. F)
II
TR408 - 4 19 } Inter
. 423.428 -
iA i 11 i21 i oo
II
2SA1127(R.S.T)
II
11 changeable
iB
:os:o1:00
II 28507
II
TR432
iC
i o9ia2 i oo
II
2SC9a2
II
TR433
iC
i 1s i o9i oo
II
2SC 1509(P,Q,R,S)
II
TR403,404
iC
i 19i a3i 00
II 2SC19a3
II
TR429,430
i 23 i 20i 10
2SC2320(E.F)
TR42U-42£ ,
iC
II
II
424.426.427 } Inter-
iC
i 26i34 i OO
II
2SC2634(R,S, T)
II " changeab~
iC
! 2a i 1a i 00
II
2SC2a7a
II
TR401,402
iO
! 03i 13i 00
II
2SD31 3(E.F)
II
TR431
iO
! 04! OO i 20
II
2SD400(F)
II
TR425
iG
: os :a2 : 00 IC
M521 aL I c
IC406,411,412
iG : oa : 92:00
LC4066B
II
IC40 1- 404 , }
II
407 - 41 o Inter-
iC::
; os; 16 ; oo
,,
µ P04066BC
II
11
changeab~
iC::
: 09 : 15 : 00
,,
STK2250Y
II
IC414
iG
i o9i20ioo
,,
MS220L
" IC40S
iG
; 09 ; 24 ; 00
II STK3061Y
II
IC413
iC::
: 09 : 25 : 00
" LC650SC-
612
II
IC41S
iF i oo i oo i 4o
Diode 1S1S55
~
{
,,.
-
"'
!i(jj7-
43
o. } Inter-
iF
i oo i os i 7o
II
152473
II 11 changeable
iF
j oo j13 j so
II
1ssa4
II
0401-412
iF
i oo i 34 i 4o
Zener Diode R06. 2EB3
' Yx-t- - ~{,,--
"'
D432
iF
i OO i 2S iSO
II
HZ9A-1
II
041S , 416
iF
joo j23 j so
II
HZ12B2
II
0431
llE New Parts (fi~JU'll!ifti)
15

R-70 / R-70M
Ref.
Part No.
No. Description Remarks
iF
i ooi 30! 40
Zener Diode HZ18-1L
·;; :I: -j- - ~· 1' *-t 0413.414.435.436
iH !
ooi 01!
70
Diode Bridge S1RBA
~· { ;t -t 7' I) ':I :,; 0433
iH :oo:oa:10
II
iH i
ooi 10!40 II
iH !
oo! 10 ! 90
II
t--~--t~--+~t---t---t ~~~~ ~~~~~~+....:.4~D~4~B~4~1~~~-+~ --~~ ' - ' ~~~-4 D434
RB402(LFD)
S4VB20
II
]
Inter-
changeable
II
II
II
KA ! 80 ! 37 ! 90 Push Switch 2 circuit 7
·:; .Y .:1. ;;(. 1' ·:; ::r SW401
KA i 90 i 29 i 30 Switch
KC i 00 i 11 i 00 Relay
DC12V
1)
RY401
II II II
LB j20 j22 jlo Pin Jack
2P
I::" :..- :.; 1- ·:; 7 PJ401
4P
11 PJ402.403
LB j30!17 !50 Headphone Jack " ·:; t * :..- :.; 1- ·:; 7 JK401
LA ! OO !23 !40 Wrapping Terminal
P= 7.5 5P i-Type
LA !oo !44 jao Speaker Terminal
SP
II
SP
II
LB ! 91 !20 !50 Short Plug
5P i-Type
LB !92!11 !oo Connector Plug 10P i-Type
LB : 92 : 11 : 10 /1
11P i-Type
II
BA !OS !71 !30 Radiation Block
CB jo6 :as :so Plastic Rivet
BA :oa !40 :oo Heat Sink
BB !06 !83 !70 Ground Plate
Ei !33 ]00 !66 Birding Head TaJ>Ping Screw
3x8 FCM3-Bt
II
3x 14 FCM3-Bt
II
PACK
I
* New Parts (tif~.Ull.H.)
16
Common
Model
L
Markets
R,A,G ,B
U,C,LR
G
R.U.A.C.B.
LR

R-70 / R-70M
Ref.
Part No. Description • &
~
Remarks Common Markets
No. Model
*
PB i06l28 20
Keyboard Unit
~-;t{-t:.::i.=.·y"
KA jao j2s 50
Switch
,,
7
~
A
""
•y
7
HV j45 j71100
Flame Proof Carbon Resistor 10kQ
1/ 4W
:::f' ~ it 1J -* :;; ~ l1i:
HV j 35 j 61j00
II
1kQ
II II
HV i 35 i 53 i 90
II
390.Q
II II
HV j35j46jao
II
68.Q
II II
UWl86i62!20
Electrolytic Cap. 2.2µF 50V ?-
::J
:;;
iF
joojooj40
Diode 1S1555
,,.
""
*
,...
iA
jo9j37joo
Transistor
2SA937
7
:,...
~
A
,,
iG
j04j68j00
IC
BA6104
c
II
M54527P II
} Replaced by IC : LB1274
iG
j04j9 4 j OO
II
LB1274
II
Interchangeable
iG
j03j 11 jOO
II
M54516P
II
* iX
jeoj 14j10
II
M54560P
II
*
iF
j00j44i 10
Frequency Display LC-205MK(N)
}jJ
;/Jl
ft ~
ff- K
*
iF
jOOj45j40
LED (LED) SLR-34URC3H L E D
*
iF
i 00 i 42 j70
II
(LED) SLR-55URC3H
II
*
iF
jOOj45j50
II
(Green) SLR-34MC3H
II
* iX
j60j 14j80
LED Unit SEL9501E 5
ii LED .:i..::. ·y
SIGNAL Q
*
iF
i00j44j00
II
LS-050
ccss
LEO.:i..::.·y ~
ccss
17

A B c D E
R-70 / R-70M
EXPLODED VIEW
2
3
4
5
6
7
18

*
*
*
*
*
*
*
*
*
*
MECHANISM PARTS
Ref.
Part No. Description
No.
1
NBi61i23i40
Front Panel Unit
If
NB 1 61 1 231 50
If
1-1 PB i osi 2si 20 Keyboard Unit
1-2
CB i 61 i 82 i 40
Button
1-3
CB 1 sl[ s2l so
If
-
1-4
CB i osi ssi so
Plastic Rivet
1-5
ED i 03i OOi SS
Binding Head Screw 3X6
ZMC2-Y
1-S
CB 107141190
Adhesive Tape
2 GA i S6i
45! 00
Power Transformer
If
GA i SSi 47i 00
If
If
GA 1ssl481 oo
If
If
GA i SSi 4Si 00
If
3
LB
: 20: 14: 80
Voltage Selector
4
CB : 07: 27: 50
Cord Stopper SR-4N-4
5
HG i 30i 92! 20
Carbon Resistor 2.2MQ
1/2P
s LA i
oo! 29j so
Terminal Board 2P
7
LB
: 20: 13: 00
Fuse Holder
If
LB
i 20i 21i10
If
8
LB
1sol48110
AC Outlet M702S-B
9 MG!
oo: 07180
Power Cord SA250V 2m
If
MGi OOi 09i 20
If
7.5A250V 2.5m
If
MG 1oo:09150
If
2.5A250V 2m
If
MG 1 ooj 101 oo
II
SA300/500V 2m
II
MGi OOi 14i 50
II
10A125V 1.98m
If
MGj ooj 141 so
If
10A125V 2m
10
CB j os: as: so
Plastic Rivet
11
LA i OOi 44i 30
Terminal Plate
12
Ei
j33loojss
Binding
Head
Tapping
Screw
3X8 FCM3-Bl
13
ED 1 33 1 oo j ss
Binding Head Screw 3xs FCM3-B t
14
ED i34iOOiSS
II
4XS FCM3-Bt
15
EV j 20 j 30 j4S Plain Washer
¢4
FCM3-B t
16
Ei
j 33101 jos
Binding Head Tapping Screw
3X10
ZMC2-Bl
17 NA i
08 i 17 i 80
Tuner Circuit Board
If
NA j osj 11! 90
If
II
NA j OBj 18: 00
If
If
NA i 08 i 18 i 10
II
18 NA j
081 19 j 00
Main Circuit Board
If
NA j 08 119 1 10
If
If
NA i 08 i 19 i 20
If
19 KA j
soj 241 so
Push Switch
4A/128A
If
KA 1so:25150
If
TV-8
20
Fi
i 38i 41i00
Ceramic Cap.
0.0111 F
21
CB j091521 SO
Cover
22
KA j 90 1 34 j 70
Remote Push Switch
23
KB i00i04i00
Fuse
T5.0A 250V
II
KB j001 13 1 30
If
T2.0A 250V
II
KB :00125190
If
5.0A 250V
24
KB iOOi04i20
II
T2.5A 250V
If
KB !00!2s!so
If
2.5A 250V
25
KB :oojo3j5o
II
T2.0A 250V
If
KB i 00 i 07 i 20
II
TSOOmA 250V
II
KB jooj 10j30
II
2.0A
250V
llE New Parts (fi~JU1UL)
$ c
ti
Remarks
""
,(
*
'"
.:J..
=
';!
~
If
R-70M
-'F-;f.- 1-'.:J...= ';/
~
y -'.I -* ? /
y /
"f
'"
* ? /
777..7·;17•}--.:•;1 ~
.1<
"'
/
"'
1]\ *
:;
7.7.Jv? ·:177-7
11
;»
~ 7 /
7..
II
If
If
ti
I±
-ijJ
•
ff
::::i - I-' 7..
~
'';/ ~' -
'fJ -* /
~ tt
If
• -+
~
t.:i.-;(*'"~-
If
A c
1' ?
~
v
';!
~
ti ii
::::i
-
"'
II
II
II
If
Inter-
If
Changeable
7 7 7.. 7 ·;1 7 1
}
.....: •;1 ~
=j
~ ~
+
ti
.1<-( / !-'? ';/ ~/~*:; PACK
.1<
"'
/
"'
lj\
*
:;
PACK
If PACK
111
J!l
* PACK
.1<-( / ~-? ';/ ~/1'*:;
PACK
7 .:i. - -T -Y -
~
If
If
If
;t
"'
/ y -
~
If
If
7 ';/ y .:i. 7.. 1
·;17
POWER
II
If
-t?
=j
::::i
/
::::i ;...- 7 ;...- if -'fJ ,< -
IJ ~- ~ -:f•;1y;i;1,'( •;1"f
PH ONO Selector
t
.:i.
-
;(
If
II
II
II
II
II
If
R-70/R-70M
R-70 /R-7 0M
Common Markets
Model
Ref.
Part No. Description • &
~
Remarks
Common Markets
No. Model
2S
AA 1 s1 ls5
00
Top Cover
~
';/
7
'fJ .1<
-
LR
27 AA
:s1 :as
40 Bottom Cover *
~
J,. 'fJ
(<
-
28
AA i S1 !65
60 Rear Panel
IJ
1'
,(
*
'"
R
II
AA j S1 j S5 70
II II
U,C
II
AA: S1 l65
80
II
II
G
II
AA iS1 i S5
90
II
If
A.B
II
AA!s1!12
10
II
If
R-70M
LR
29
BA :as: 58 50
Heat Sink t -
~
::F
';!
'fJ -
U,C lli
30
BA iOBi57
90 Knob
·:;
'?
i VOLUME
G lli 31
BA :os:5s
00
II
If
BALANCE
A,B lli 32
cB:s11s2
60
Side Cover
..,.
"'
"'
'fJ .1<
-
R,LR
lli
33
CB!S1i82
80
Slide Knob
7..
=j
"'
"'
'':/
'?
i SPATIAL EXPANDER
R,LR
~
34
CB :s1 :03
90
Leg
pp
K-200
35
CB :s1 :01
30
Push Button 7 ';/
y
.:i.
* ? /
SPEAKERS PH ONO
II
U,C,LR & 36
CB !09!43
60
Spacer
7•) / ~ 7-.~--tt-
A-550
A,G,B 37
CB :so:14
70
Antenna Holder
1'/77*'"~-
T-10
R,U,C,LR
38
cB:s1js4
90
Plastic Rivet 7 7 7.. 7 •;1 7 I) .....: •;1 ~
G,B,A 39 EZ
i00i 1400
Ground Terminal Screw 3X 13.5 MFNi-11
1'
-
7..
-+ *
:;
R,U,C,LR &
40
EV :90!13
60 Sens Plain Washer
¢1 Ox¢3.6 xt0.8 FNM3-3g
-t?
J,.
7..
IJL
~
•
R &
41
ED: 32: 60 4S Binding
Head Screw
2.SX4 FCM3-Bl
.1<
"'
/
"'
1]\ *
:;
PACK
A.LR
A & 42 EZ
;00113
10
Cup Screw
4X8
FNM3-3g 'fJ •;!
7?
"'
~
* :;
G &
43
EA 132100
36
Pan Head Screw
2X3 FCM3-B t
-r
.....:
1]\ *
:;
PACK
B &
44
CB :s1 j99
90 Rubber, Antivibration
l!J;
•
=1
J,.
U,C,LR & 45
KA i90!53
so
Remote Switch Wire Part
IJ ~-~SW '71-\7-tB
PH ONO
U,C,LR &
4S
CB 162 :01
00 Rubber, Antivibration
l!J;
•
=1
J,.
47
CB 162 :01
50
If II
U,C,LR
48
AA iS1 i67
00 Antenna Panel
1'
/
::;-
-r
,(
*
'"
U,A,G,C,B
If
AA :s1 :s3
20
II
II
R,L R
49 EN
j30 po
s
Bind Bonding Head Tapping Screw
3X8
FCM3-Bl
,<-< ::..- I-' ilf ::..- 'T -1 ::..- ~
PACK
~
·:.1
~ ::..-
~
*
~
I
50
EZ iooi 13
50
Cup Screw
3x14 FCM3-Bl
'/J ';/ "t'A? IJ 1-(BH ~)
CB !os 192
50
Binding Tie BK-1
-(/y.:i.C1•;17?1
R,LR
U,C
A,B
G Accessories Assembly f.t • A Ass'y
R,A,B Mi
:os j2s
50
Antenna
FM FM
Q
'? ·:171';...-77
U,C,LR
Mi
jOS j29
10 Loop Antenna AM
'"
-7 1'
/ 7
-r
G
-- -
A,G,B &
R,U,C,LR &
&
R
~
G,B,A
IA
U,C,LR &
R
~
LR
&
R &
G,B,A &
U,C,LR &
llE New Parts <•••A)
19
20