Sharp RG-7050E User manual

SHARP SERVICE MANUAL
ATSMY80198CST
RG-7050E
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system
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88-02-96
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340-2700.
4200
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‘nd PSS Oe SAPROGRAM 020
‘In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified be used.” | r gn 4
nee.
@ APSS
Auto Program Search System
Solid State In-dash Type Cassette Car Stereo Player
with LW/MW/FM/FM Stereo Radio and ANSS
MODEL RG-7050E
In the RG-7050E Service Manual the following are not described, and for their details
please refer to the RG-5900H/E Service Manual already issued.
1. Circuitry Description
2. Power IC Replacement
INDEX TO CONTENTS
1. Specifications 2... 0. ee ee ee ee ee ee 2 9. Block Diagram of Integrated Circuit........ 15~17
2. Dial Cord Stringing .. 2... ee ee ee 2 10..Packing Method. ....... elie Nit le deaigted wo Dae 18
3. Front and Rear Parts Layout...........0..00. 3 11, Mechanism Exploded View............-000- 19, 20
A. Disassembly: se piese elamenec sin wistats ete ha ae Bae ate 4 12. Wiring Side of PW. Board... 1... 0... eee 21,22
5. Block Diagram .. 0... eee eee 5,6 13. Schematic Diagram 1.0.0.0... ce eee eee 23,24
6. General Alignment Instruction ............. 7~11 14. Cabinet Exploded View .............0000- 25, 26
Yael 2) 5 | 126 aE ae ee 12 15. Transistors Type .. 2.2... eee eet eee 27
8. Mechanical Adjustment.........0........0- 13,14 16. Parts List... 2... 000. ea oe ee meee 28 ~ 32
_
SHARP
CORPORATION
osaka.
JAP

SPECIFICATIONS
GENERAL
TAPE
PLAYER
SECTION
Type:
«Solid
State
In-dash
Type
4-Track
2-
Playback
system:
4-track,
2-channel:.
Stereo
channel
Auto
Reverse
Cassette
Car
Using
tape:
Philips
standard
compact
cassette
tape
Stereo
Player
with
built-in
LW/MW/FM/
Tape
speed:
4.75
cm/sec.
:
FM
STEREO
3
band
Radio
and
APSS.
Wow
and
flutter:
0.35%
(DIN.
45
511)
Power
source:
12V
(for
negative
earthing
car
only)
Frequency
response:
50Hz
~
10
kHz/—6
dB
Output
impedance:
4
ohms/channel
Fast
forward
time:
120seconds
(@
C-60
cassette
tape)
Semiconductors:
16-transistor
(1-FET),
18
diode
(4-
Motor:
D.C.
motor
with
mechanical
governor
LED)
and
6-IC
{integrated
circuit)
“*
Qutput
power:
8W
+8W
(maximum
power)
RADIO
SECTION
.
BW+5W
(at
10%
distortion)
Frequency
range:
LW
150
~
285
kHz
S/N:
54
dB
MW
520
~
1,620
kHz
Dimensions:
178
(W).
x
148
(D)
x
44
(H)
mm
.
FM.
87.6
~
108
MHz
Weight:
1.6
Kg
IF:
LW/MW
452
kHz
FM
10.7
MHz
Sensitivity:
LW
400
pV/20
dB
FM.
2.5
uv
3 Turns
Figure 2 DIAL._ CORD STRINGING
—2=

a
PARTS LAYOUT
1. Tone Control Knob (JK NBKO204AFSA)
2. Power ON-OFF/Volume Control/Balance Control Knob/
Cassette Ejection Button (JKNBKO203AFSA)
. APSS Knob (JKNBPO119AFSA)
. Cassette Compartment (GFTAC1144AFSA)
APSS Indicator (VHPGL-9NG519F)
Tape Travel Direction tndicator (VHPGL-9NG6/-1)
DAR w
®
Qa
©
® @
. FM Stereo Indicator (VHPGL-9PRQ/-1)
. Tuning Contro! Knob (JKNBKO203AFSA)
. Fast-forward Winding Knob (JKNBPO119AFSA)
. Program Selector Knob (JKNBPO119AFSA)
. Antenna Trimmer (TC1) (RTO-A1056AFZZ)
. Band Selector Knob (JKNBPO119AFSA)
——
Figure 3—1 FRONT PARTS LAYOUT
13. Antenna Socket (QSOCZ0015AFZZ)
14. DC Input Terminal (QSOCD0271AFZZ)
15. Earth Terminal
16, Speaker Terminal (QSOCD0271AFZZ)
Figure 3-2 REAR PARTS LAYOUT
a 1a

ain ae
DISASSEMBLY
ps
\t
Remove
the
two
(2)
screws
from
the
cabinet.
@
Remove
the
two
(2)
screws
from
the
Mechanism
chassis.
Remove
the
Top
cabinet,
then
take
it
out.
(See
Fig.
4—1)
(See
Fig.
4—3)
Remove
the
two
(2)
screws
from
the
nose
piece,
then
®
Pull
out
the
four
(4)
wiring
connecting
sockets
provided
take
it
out.
(See
Fig.
4—2)
on
the
printed
wiring
board.
©
Unsolder
the
two
(2)
leads
from
where
the
APSS
PWB.
(See
Fig.
4—4)
ee)
BAF
BB
92
—
96
——
$0.2
from
108
—ommt
©
$60
700m
1290-180
eM
LW
S097
—
200——
240
e285
nn
KE
APS
—
ee
PROGRAM.
x
7 nw:
Figure 4—1
Figure 4—2
Figure
4—3
Figure
4—4
—4—
wy

ANTENNA
\i/
VR1
Muting
curve
Adjust
V.C.0. Adjust
VRS
bm cure @){e}0
| :
FM FRONT END
1
AFC(5)
(6)
TL2] )
(5)
RF COIL 6 0
MW LW MW LW
[
4
sreREO
INDICATOR
+B D301
I Osc COIL
LW osc LW RF
° Som
ral
(4)— MW OSC Lw osc
5.6yH
PLI PLe PL3
!
wD) @
J
ANT COIL
(1)
TLI
uw SWI-8 @) =
Lto ot D303
SWI-A 1C4 1” TAPE
LIZ (5) INDICATOR
AM RF-OSC IF-DET
Dl b2 (7) D4
© APSS Circuit eee ae
Pre
INDIC.
To Q7
HEAD
FORWARD
e)
Th
zy,
O
DIO3
Power
AMP
L-ch
=
REVERSE VRIOI
I SW403-A Volume $so2
vee ©] ten
(i)
; {
Sh Speaker Terminal
SP FORWARD
O
] vrRios 3 (5)
oo
o
1
Tone
|
(7)
()|
Rech
REVERSE
vrio2
C
$W403-8 Usiume +B a6
av) fe
Playback
Head
Power.
eM
Fi
To Swao2 (07) Xo Li2 O pact 0 De +av
sw2 PTL con .
DC Input
plo2 : DIO! Terminal
Figure 5 BLOCK DIAGRAM
a . -6—

~ (Front End) |
ee TC2
(Front End)
Tuner Unit
(Front End)
ie LS
Figure 7 ALIGNMENT POINT
~7—
“aie nonymetioeetpe aisoinma piel
eins eee eed
GENERAL ALIGNMENT INSTRUCTIONS
Should it become necessary at any time to check the alignment of this receiver, proceed as follows;
1) Connect an output meter across the speaker voice coil lugs.
2) . Set the volume control at maximum.
3) Attenuate the signals from the generator enough to swing the most sensitive range of the output meter.
4) Use anon-metallic alignment tool.
5) Repeat adjustments to insure good results.
LW/MW ALIGNMENT CHART
Set the band selector switch at “MW” or “LW” position.
SIGNAL GENERATOR
CONNECTION TO INPUT SIGNAL
RECEIVER FREQUENCY
RECEIVER
BAND
STEP
Connect signal genera- | Exactly 452kHz High end of dial | Adjust for maxi- T2
tor through a dummy (400Hz, 30%, AM {minimum mum output on
If to the antenna socket modulated) inductance) speaker voice coil
(SO1) Ground lead to lugs.
the receiver chassis.
(Refer to Figure 8.)
IF Repeat until no further improvement can be made.
Same as step 1. Exactly 510kHz.
Low end of dial
(maximum
Same as step 1.
R IS PF
|
|
TO EXT. ANTENNA SOCKET.
R=80-Z (ohm)
IMPEDANCE OF
65PF
Z = OUTPUT
SIGNAL GENERATOR
Adjust the MW oscillator
(400Hz, 30%, AM.. coil L5.
modulated) inductance}
- ume
C eel ‘ Same as step 1. Exactly 1650kHz High end of dial | Sameas step 1. Adjust the MW oscillator
ree (400Hz, 30%, AM | (minimum trimmer TCS.
_ modulated) inductance)
Same as step 1. Exactly 1400kHz 1400kHz. Same as step 1. Adjust the MW antenna
. : (400Hz, 30% AM trimmer TC1, and then
Tracking
modulated) adjust the MW RF
trimmer TC3.
Mw Repeat steps 3 and 4 until no further improvement can be made. Su
——____j—_______|
Same as step 1. Exactly 145kHz l.ow end of dial | Same as step 1. Adjust the LW oscillator
400Hz, 30%, A (maximum trimmer TC4
modulated) inductance) 1
6
LW
ed
,
Same
as
step
1.
Exactly
310kHz
High
end
of
dial
|
Same
as
step
1.
Adjust
the
LW
oscillator
? | (400Hz, 30%, A (rninimum coil L4.
Momodulated inductance)
| Same as step 1. Exactly 260kHz 260k tz. Same as step 1. Adjust the LW antenna
7
LW
Tracking
400Hz,
30%,
AM
coil
L2,
and
then
adjust
moduleted} the LW RF coil L3.
8 LW Repeat steps 6 and 7 until no further improvement can be made.
—_——_—_—_—= TO CHASSIS GROUND.
Figure 8 AM DUMMY

Set the band selector switch at “FM position.
Quar-
drature
Detector
FM ALIGNMENT CHART
SIGNAL GENERATOR
CONNECTION TO
RECEIVER
Connect signal generator
through a .O22MFD capacitor
to antenna socket (SO1).
Connect generator ground
lead to the receiver chassis.
Same as step 1.
Band
Coverage
Connect signal. generator
through a-dummy including
output impedance of signal
generator to the car antenna
socket (SO1).
Ground lead of generator
chassis. (Refer to Figure 9.)
INPUT SIGNAL
FREQUENCY DIAL SETTING
Exactly 10.7MHz | Lowend of dial.
(400Hz, 30%, FM (maximum
modulated) inductance)
Exactly 10.7MHz
epi.
(unmodul{ated) Soine 3 ste
RECEIVER
REMARKS
Connect VTVM
between test point
TP1 and chassis
ground.
See NOTE A.
ADJUSTMENT
Tune IFT 1
(Front End)
See NOTE A.
Repeat steps 1 until no further improvement can be made.
Exactly 87.2 MHz
{400Hz, 30%, FM Same as step 1.
modulated)
Adjust for maximum
output at speaker
voice coil.
1) Connect VTVM (10 volt range D.C. Scale between test point TP2 and Pin (3) of IC-1.
2) Adjust T1 for O volt on VTVM.
[ore ce
R2
~Y)
Rl
To ANTENNA SOCKET
Z=75(ohm) res
Z=50 (ohm) <
TO GROUND
Z=OUTPUT IMPEDANCE OF SIGNAL GENERATOR
Figure 9 FM DUMMY
|= 37.5 (ohm)
‘R2= 75 (ohm)
Ri= 50 (ohm)
R2=50 (ohm)
Oscillator
trimmer TC2
(Included by | |
Front éndy

Five kinds of ceramic filter (CF1, CF2) are available for this
set. The difference of central frequency from each other
can be known by the color indication. The table below shows
such a. difference of IF and S curve, depending upon the color
indications of the ceramic filter (CF 1, CF2).
| | Black
| 8 | Blue | 10.67MHz + 30kHz _|
fotA | Red | 10.70MHz + 30kHz |
Central ©
Frequency
For their employment, it is required to use two ceramic filters
of same type.
Figure 10—1
FM STEREO AND SEPARATION ALIGNMENT
Set the band selector switch at “’FM’’ position.
SIGNAL GENERATOR : RECEIVER
STEP | CONNECTION TO INPUT SIGNAL DIAL
RECEIVER FREQUENCY SETTING
98MHz Adjust so that the fre- Connect the frequency VR3
quency becomes 19.0kHz.| counter (or oscilloscope)
(In case an oscilloscope is | through a 100K ohm
i connected to the test resistor to TP10 (3 pin
point TP10, adjust the of IC3).
signals to be 19kHz by
using Lissajou’s wave-
form).
FM Signal generator Same as The VR2 should be ad- Same as step 1.
98MHz step 1.
(External modulator)
FM Stereo modulator
Pilot: 9% ;
(6.75kHz dev.)
Signal: 400Hz, 91% ;
(68.25kHz dev.)
justed so that the output
Repeat steps 1 and 2 until no further improvement can be made.
METER
CONNECTION
ADJUSTMENT
Refer to Figure 10—2.
level L (or R) of the
speaker might come to
be lowest by generating
the output signal of the
FM stereo modulator on
Right side {or Left side)
only.
If without the frequency counter, proceed with the alignment as follows. While receiving an FM stereo signal, turn the VR3 until
the P.L.L. will be locked (when it is locked, the stereo indicator will be lit). Then, reversely turn the VR3 halfway and fix it.
FM
SIGNAL
SPEAKER
GENERATOR
TERMINAL
SET
FM stereo
Modulator
°0 ANTENNA
(See Figure 9.)
Figure 10—2
—~10—
Ae

ost seeeea tT)
ANSS ADJUSTMENT
. Set the band selector switch at ‘’FM” position.
. Apply a 19 kHz signal of 30 mV to (TP6).
Connect a VTVM and/or an oscilloscope to (TPQ).
. Adjust L10 for minimum output at- (TPQ).
. Then, apply a1 kHz signal of 100 mV to (TP6).
NOOR WN =
Make sure that there is no output at pin 6, applying a 100 kHz signal of 50 mV further to pin 13.
Next, make sure that a 1 kHz signal of 100 mV appears at (TP6), connecting (TP-8) to earth.
THE INSTRUCTION OF FREQUENCY ADJUSTMENT
In
order
to
comply
with
Pfg.
Nr.
358/1970,
please
fix
the
low
end
of
dial
frequency
(87.5MHz)
and
the
high
end
of
dial
frequency
(107.9
MHz}
on
FM
band,
by
adjusting
Oscillation
trimmer
oscillation
coil
(L4),
(Included
by
front-end)
respectively,
as
itlustrated
in Figure 7.
MUTING CURVE ADJUSTMENT (Fig. 11—1 and 11—2)
1. Place the set in FM mode.
2. Set FM signal generator to produce a signal of 98 MHz
{modulated at 22.5 kHz), 54 dB, and connect this signal
to the antenna terminal of the set.
3. Tune in the signal of 98 MHz, and adjust the Volume
control so that the speaker output becomes 1.4 V on
VTVM (across a resistor of 4 ohms).
(Balance control: Mechanical center).
4. Set FM signal generator to produce a signal of 98 MHz
‘(modulated at 22.5 kHz), 20 dB, and tune in this signal.
5. Adjust the semi-variable resistor VR1 so that the speaker
output becomes 1V on VTVM (across a resistor of
4 ohms).
FM. SIGNAL
GENERATOR
ATTENUATOR .
ANTENNA
SPEAKER
OUTPUT
LEVEL
{
° 10 20 30 40
mm (dB) SG OUTPUT LEVEL,
Figure 11—1 (SG Output vs Speaker Output)
SPEAKER
OUTPUT
) )
a
GND
98
MHz,
22.5
kHz
54
dB
>
200dB
Figure 11-2
—-Ti—

(oa Ql
4P
o =
R1
LI 680
/
/
©) 2
La ae ae ae ~é
/
/
/
/ Qi.
| /
/
/ Q2.
/
/
/ Q3.
/
AM BLOCK
bet ease 2 A eee a 7
Ot) -_ | | \
/ = (3)
/ | {
/ ca eet ty ge al
22P
/
/"Fc3 cs
30P 24P |
02
ie o
R4
aoe. ce eM
OR
EQUAL
Q)
ned
o ror i
Ge EouAt oe 538 Bg cié6
i L4 DB 02
= cl4 16
2SCI675 R3 cil /[ tc2 ap OR EQUIAL
OR EQUAL 5.6K ioP /
FM FRONT END 1: ANT (75 ohm)
2:8 (8.2V)
3 : OUT (300 ohm)
4:E
5: AFC
Note:
The FM Front End and AM Block tuner unit shown above
is supplied as an assembly unit and to supply its constituent
parts separatory is not possible.
~12—

, PINCH ROLLER PRESSURE ADJUSTMENT (Figure 13—1)
1. . With power supply turned on, push
the
point
(A)
with
a
tension
gauge
TENSION
to
make
the
pinch
roller
apart
GAUGE
from
the
capstan
shaft.
|
Then,
(0~500g)
gradually release the tension gauge ao
and read its value when the pinch
roller starts to rotate.
2. It is normal that the tension gauge
reads 250 ~ 300g. If the above CAPSTAN SHAFT \
value.
is
not
satisfied,.change
the
~~
setting position of Pinch Lever
Spring.
PINCH ROLLER
PINCH LEVER SPRING
Figure 13—1
TORQUE
CHECK
AT
PLAY,
FAST
FORWARD
AND
REWIND
MODES
(Fig.
13-2
and-13-3
and
13—4)
1,
Put
a
torque
meter
cassette
in
the
cassette
compartment
of
the
set,
and
see
that
the
measured
torque
in
each
mode
is
normal
as
follows:
Figure 13—2
Figure
13—3
(TW-2111)
ve
Figure
13—4
(TW-2231)
-
—13—

FLYWHEEL
THRUST
CLEARANCE
ADJUSTMENT
Slowly.
tighten
the.
screw
for
flywheel
thrust
clearance
until
the
thrust
clearance
becomes
O
(zero)
and
loosen
the
screw
by
1/4
turn
from
this
point.
Since
screw’s
pitch
is
0.5
mm,
thrust
clearance
of
0.1
~
0.2mm
is
produced.
Caution:
After
completion
of
the
adjustment,
be
sure
to
ADJUSTING
SCREW
lock
the
adjusting
screw
in
place,
using
glyptal
or
glue.
0.1~+0.2mm
FLYWHEEL
Checking
of
Tape
Speed
Figure
14—1
1.
Connect
a
frequency
counter
to
the
speaker
terminal.
2.
Using
a
test
tape
(MTT-111,
3
kHz),
play
it
for
10
seconds
at
its
beginning
and
end
parts.
3.
Check,
then,
that
the
playback
frequency
indicated
by
the
counter
is
2919
to
3081.Hz
at-maximum.
If
not,
renew
the
motor.
Note: -
The
supply
voltage
is
set
at
DC14V,
and
the
unit
must
be
kept horizontal during the measurement.
Speaker terminal
Frequency-Counter
MTT-111
Playback
Playback Head
Figure 14—2
HEAD AZIMUTH ADJUSTMENT
Standard
Test
Tape
to
be
applied:
-Philips
HU-71512
or
the
equivalent
(TEAC
MTT-113,
VICTOR
VTT-601).
(1)
Set
the
Player
Unit
on.
(2)
Turn
the
azimuth
adjusting
screw
until
the
output
of
the
test
tape
(6.3kKHz).
is
boosted
up
to
the
maximum.
Caution:
After
completion
of
the
adjustment,
be
sure
to
lock
the
adjusting
screw
in
place,
using
g!yptal
or
glue.
Figure 14-3
—-14—
“vy

-F ing)
©
®
GND ©
Level Level Level
Detc. Detc. Detc.
Vee - \F out Quad in Vret
(2) - ©) €)) (3)
Voltage
9
nie o ac
Clamp
[em Quadrature ead eoceture
Limiter Detector
(8) AF out
AF mute
Amp.
P (s)Mute AF Adjust
Signal M
Strength
rae
(9)
GND
Meter
-
(s)
=
(4)
-
©)
S.
Meter
Mute
Drive
Mute
tn
Figure
15-1
BLOCK
DIAGRAM
OF
INTEGRATED
CIRCUITS
(IC1)
Preliminar
Amplifier
Circuit
| Gate Output]
Circuit Circuit
‘Voltage
Stabilizer
Schmitt
Trigger
Circuit
Noise
Control
@) Circuit
Figure
15-2
BLOCK
DIAGRAM
OF
INTEGRATED
CIRCUITS
(IC2)
—15—
@) a ee
Phase Voltage
Compa- Control
rison . Osciltator
Fre-
quency
Divider
Fre-
quency
Divider
Voltage
» {Stabilizer
Fre-
quency
Divider
Figure
16-2
BLOCK
DIAGRAM
OF
INTEGRATED
CIRCUITS
(1C4)
—-16—

Amplifier Constant
circuit
voltage
Circuit
Detection Rectifier j Schmitt
circuit circuit ircui circuit
Figure 17~1 BLOCK DIAGRAM OF INTEGRATED CIRCUITS (IC5)
OUT PUT-I
OUTPUT-2
Figure 17-2 BLOCK DIAGRAM OF INTEGRATED CIRCUITS (IC6)
-17—
ay
1:2 3 4-5 6 F 8 9° 10° H 12
&
LX-BZ0314AF
FD
TTAG-0069AFZZ
TSPC-0702AFZZ
~~
TTAG-0066AFZZ
SSAKHOO06AFZZ
TLABZ0124AFZZ
TLABSOO79AFZZ
TCAUZ0039AFZZ
SPAKA0729AFZZ x 2
LANGT0071AFFW
SPAKX0266AFZZ
SPAKC1637AFZZ
HPNLC1323AFSA
JKNBZ0202AF2ZZ
PSPAZ0074AFZZ
PSPAZ0075AFZZ
bs
TTAGHO157AFZZ
PSPAZ0087AFZZ
TINSEO698AFZZ
-
TINSZ0263AFZZ
QKITZOOO1AFZZ
TGANE1117AFZZ
Garanty Card
TCTLE0001AGZZ
Figure 18 PACKING METHOD
—18—

4
Figure 20 MECHANISM EXPLODED BOTTOM VIEW
Figure 19 MECHANISM EXPLODED TOP VIEW
-20—
—19—

{ -SW2/SW20!/VRIO! ~VRIOS
OFF/ VOLUME EJECT
: BALANCE /TONE
STEREO
YELLOW
TAPE/ RADIO
SELECTOR SWITCH
FORWARO/ REVERSE
CHENG OVER SWITCH
MOTOR MOi
i
I
+DC SUPPLY
BROWN
FUSE HOLDER
YELLOW
Figure 21 WIRING SIDE OF P.W. BOARD
—21—
)
|
INDICATOR
——— owe "R92: ROS ‘
RE4- RTE
cea
Res
Ras.
¢
APSS
INDICATOR
titet
If
dss
79 C78. RTT
Lil
THIET
- (CSSTTST——
—22—
oy

nis Qi 28c4a60c
2.2m
Ti_FM F
yy Cle
~T 4.7/50V co wy
17 50V'
ANTENNA
sol
IN out @)
| FM
FRONT END!
VRi Muting Curve Adjust.
RS
100
£29 a
42728N
Rie
5.6K [isewt
TP2
9
VR2 Stereo Separation Adjust.
VR3 V.C.0. Adjust.
ROL COZ
2.2K .47/50V
coe
Bien Ay
99 ROD.
433725v 10K
cos
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shown
above
wiring
figures.
For
the
55
pres
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(SW403-C),
as
you:
know
in
ol
revense
|
gait!
Qs
2SC458D
another
figures,
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is
Loch
7
L-eh
momentarily
switched
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or
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is
done
so
to
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ward”
when
position
is
in
control
|
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2SD973R
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condition
(“on"’
position).
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ee
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the
condition
after
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switching
will
become
that of
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MECHANISM
|
a
oak
bee
PLAYBACK
HEAD
SWITCH
NO.
DESCRIPTION
POSITION
Swi
(A
~F)
|
BAND
SELECTOR
SWITCH
MW
-
LW-FM
sw2
|
POWER
SWITCH
‘SW201
EJECT
SWITCH
APSS
SWITCH
.
Sw402
TAPE/RADIO
SELECTOR
SWITCH
TAPE
-
RADIO
Note:
SW403
{A
~B)
|
FORWARD/REVERSE
CHANGE
OVER
SWITCH
|
FORWARD
-
REVERSE
°
.
.
%
swa0s
FORWARD/REVERSE
RELEASE
SWITCH
=
ON:
Voltages
for
APSS
circuit are
measured through a
no-signal
TAPE
TRAVEL
DIRECTION
INDICATOR
SWITCH
|
FORWARD
- REVERSE
recorded
tape
when
the
APSS
switch
(SW401)
is
set
at
‘Yon’
a
(Specifications
or
wiring
diagrams
of
this
model
are
subject
to
change
for
the”
improvement
without
prior.
notice.)
é :
position.
~
—23—
Figure 23 SCHEMATIC DIAGRAM
—24—

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2SB562C 2S8C458D
Q203 Q2,98
ddd Qo0
ECB
ECB
2SC202ILN Q3,Q4
2SC202IE2 Q5,Q6
28C202le Q204,Q205
2SD973R Q7
2SA937R Q20I
8 a. B. .€ a)
Figure 27, TRANSISTORS TYPE
as
mo Qn
om
28C460C
Ql
28C2270
Q202

REF.
NO.
(C1
IC2
Ic3
1c4
ICS
IC6
Qi
Q2
Q202
Q203
Q204
Q205
D1,
D2
D3
D4
D101
D102
D103,
D104
D201
D202
D203
D204
D205
D301
“HOW TO ORDER REPLACEMENT PARTS”
To have your order filled promptly and correctly, please furnish the following informations.
1. MODEL NUMBER
3. PART NO.
2. REF. NO.
4. DESCRIPTION
PART NO.
DESCRIPTION
INTEGRATED CIRCUITS
VHILA1140//1F
VHIM51011//1F
VHIM51531L/1F
VHITA7616P/1F
VHIIR3108//-1
VHIHA1377//1F
FM IF Amp. (LA1140)
ANSS Circuit (M51011)
FM M.P.X (M51531L)
AM RF/OSC/IF Detector
(TA7616P)
APSS Circuit (1R3108)
Power, Amplifier (HA1377)
TRANSISTORS
VS2SC460-C/-1
*VS2SC458-D/-1
VS2SC2021LNS1
VS2S8C2021E21F
VS2SD973-R/-1
VS2SC458-D/-1
VS2SA937-R/-1
VS2SC2270C/-1
VS2SB562-C/-1
VS2SC2021E/-1
VS2SC2021€/-1
VHD1S1555V/1G
VHD1S1555V/1G
VHD1S1555V/1G
VHDS52778//-1
VHERDSY.1ED/-1
VHDI1N34A///-1
VHD1S1555V/1G
VHDS52778B//-1
VHDS5277B//-1
VHD1S1555V/1G
VHD1S1555V/1G
VHPGL-9PRQ/-1
FM IF Amp. (2SC460C)
Impedance Converter
(2SC458D)
1st Preamplifier (29C2021LN)
2nd Pre-amplifier (2SC2021E2)
Voltage Regulator (2SD973R)
APSS Muting (2SC458D)
APSS Solenoid Control
(2SA937R)
APSS Solenoid Drive
{2SC2270C)
Motor, Play Lock Solenoid
Drive (2SB562C)
Motor, Play Lock Solenoid
Control (2SC2021E)
FF/REW Release (2SC2021E)
DIODES
AM Detector Circuit
Static Protector (1S1555V}
ASTS Control (1S1555V)
AM Detector Circuit
(1$1555V)
Protector (S5277B)
Zener Diode (9.1V), Voltage
Regulator (RD9.1ED)
Reverse Current Protector
(14N34A)
Reverse Current Protector
(1$1555V)
Protector (S5277B)
Protector (S5277B)
Reverse Current Protector
(181555V)
Reverse Current Protector
(181555V)
LED, FM Stereo Indicator
(Red) (GL-9PRQ)
os
CODE
AK
AG
AK
AK
AK
AR
AB
REF.
NO.
0302,
D303
D304
T2
CF,
CF2
TC1
TCS
TC4
TC5
VR1
VR2
VR3
VR101,
VR102,
VR103,
VR104,
VR105
—~28—
PART NO.
| VHPGL.-ONG6/-1
VHPGL-9NG519F
RCILCO061AFZZ
RCILAO301TAFZZ
RCILAO0301AFZZ
RCILBO474AF ZZ
RCILBO475AFZZ
RCILCOO74AFZZ
RCILCOO75AF ZZ
VP-CH 100K 0000
RCILZOO85AF ZZ
RCILFOO67AFZZ
RCILCOO77AFZZ
Not Available
. DESCRIPTION
Tape Travel Direction Indicator
(Green) (GL-9NG6)
LED, APSS Indicator (Yellow
Green ) (GL-9NG519)
COILS
Choke, 5.6uH
LW Antenna Coil
LW RF Coil
LW Oscillator
MW Oscillator
MW Oscillator, 5.64H
LW Oscillator, 270uH
Choke
Trap, 19kHz
Choke
Noise
Tuner Unit Assembly
(Part of RTUNCO1T40AF ZZ)
TRANSFORMERS
RCILIOZ69AFZZ
RFILAQOO7AFZZ
RFILFOO80AFZZ
RTO-A1057AFZZ
RTO-A1053AFZZ
RTO-A1053AFZZ
RTO-A1052AFZZ
RVR-M0O174AF ZZ
RVR-MO305AF ZZ
RVR-MO167AF ZZ
RVR-BO239AF ZZ
FM IFT
AM IFT
FILTERS
Ceramic Filter, 10.7MHz
CONTROLS
Trimmer, MW Antenna
Trimmer, MW RF
Trimmer, LW Oscillator
Trimmer, MW Oscillator
200K ohm (B), Muting Curve
Adjust
1K ohm (B), Stereo Separation
Adjust
3K ohm (B), V.C.O. Adjust
50K ohm (B) x 5
VR101: Volume (Left)
VR102: Volume (Right)
VR103: Balance: Volume
VR104: Tone Volume (Left)
VR105: Tone Volume (Right)
Assembly with Power Switch
(SW2)
pos
AC
AD
AB
AD
AD
AD
AD
AB
AB
AB
AE
AC
AE
AE
AH
AD
AD
AD
AD
AD
AC
AD
AC
AV