Technics ST-8044 User manual

ORDER NO. SD7811-°
Service
Manual
FM/AM
Stereo
Tuner
ST-8044
(E), (EG), (X), (XA),
(XAL), (XGH)
ST- 8044K
ew
(EG),
(X),
(XA),
ST-8044
ae
Me.
.
ae
as
ety
(EB)
* The models ST-8044 (E, EG) and ST-8044K (E, EG) are
available in Scandinavia and European only.
*The models ST-8044 (X, XA) and ST-8044K (X, XA)
are
available
in
Asia,
Latin
America,
Middle
East
and
Africa only.
*
The
models
ST-8044
(XAL)and
ST-8044K
(XAL)
are
available
in
Australia
only.
*The models ST-8044 (XGH) and ST-8044K (XGH) are
available in Holland only.
*
The
mode!
ST-8044K
(EB)
is
available
in
Belgium
only.
ST-8044K
TECHNICAL
SPECI
FICATIONS
Specifications
are
subject
to
change
without
notice
for
further
improvement.
[DIN
45
500]
FM
TUNER
SECTION
Limiting
point
1.2uV
Frequency
range
88
~
108
MHz
Bandwidth
IF
amplifier
180
kHz
Antenna
terminals
3002
(balanced),
752
(unbalanced)
FM
demodulator
pone
Sensitivity
(£40
kHz
deviation)
Channel
balance
(250
Hz
~
6300
Hz)
4+1.5dB
S/N 30 dB 1.9uV (3000), 1.34V (750)
AM TUNER SECTION
S/N 26 dB 1.7uV (3002),1.2uV (750)
S/N
20
dB
1.5uV
(3002),
0.9#V
(75Q)
Frequency
range
525
~
1605
kHz
IHF
usable
sensitivity
1.9uV
(IHF
‘58)
Sensitivity
(S/N
20
dB)
30KV,
250p4V/m
IHF
S/N
46
dB
stereo
quieting
sensitivity
25uV
(750)
Selectivity
30
dB
Total
harmonic
distortion
MONO
0.15%
Image
rejection
at
1000
kHz
50
dB
STEREO
0.3%
IF
rejection
at
1000
kHz
40dB
S/N (440 kHz deviation} MONO 68 dB (IHF: 75 dB)
STEREO 65 d8 (IHF: 70dB) GENERAL
Frequency
response
20
Hz
~
15
kHz,
+0.5
dB,
—1.5dB
Output
voltage
0.6V
Alternate
channel
selectivity
75
dB
Power-consumption
ices
Capture
ratio
1.0dB
Power
supply
(50
Hz/60
Hz)
110V/120V/220V/240V
tmage
rejection
at
98
MHz
55
dB
Dimensions
(W
x
H
x
D}
en
hee
425
pet
IF
rejection
at
98
MHz
85
dB
(165%6"
x
69%"
x10")
Spurious
response
rejection
at
98
MHz
80dB
Weight
4.2
kg
(9.3
Ib.)
AM suppression 55 dB
Stereo separation 1kHz 45 dB, 10 kHz 35dB
Leak carrier 19 kHz —35dB (—40dB, IHF)
38 kHz ~—48dB (—40 dB, IHF)
1
Matsushita
Electric
Trading
Co.,
Ltd
Technics
PO.
Box
288,
Central
Osaka
Jz

TECHNISCHE DATEN
[DIN 45 500]
UKW-TUNERTEIL
Frequenzgang 88 ~ 108 MHz
Antennenanschluss
300
(
symmetrisch),
750
(
unsymmetrisch)
Empfindlichkeit (£40 kHz Hub)
30 dB Rauschabstand
26 dB Rauschabstand
1,9uV (3000), 1,32V (752)
1,7uV (3002), 1.2"V (750)
20 dB Rauschabstand 1,5nV (3000), 0,92V (750)
Empfindlichkeit nach [HF 1,9uV (IHF ‘58)
46 dB Rauschabstand utilisable Empfindlichkeit nach IHF
25yuV (750), STEREO
Klirrfaktor MONO 0,15%
STEREO 0,3%
Rauschabstand (+40 kHz Hub)
MONO 68 dB (IHF: 75 dB)
STEREO 65 dB (IHF: 70 dB)
Frequenzgang 20 Hz ~ 15 kHz, +0,5 dB, —1,5 dB
Selektivitat 75 dB
Gleichwellen-Selektion 1,0 dB
Spiegelfrequenzunterdrickung bei 98 MHz 55 dB
ZF-Festigkeit bei 98 MHz 85 dB
Unselektivitat-Dampfung bei 98 MHz 80 dB
AM-Unterdrickung 55 dB
Gamme
regue
88
~
108
MHz
Impédance
d‘antenne
3002
(symétrique)
750.
(asymétrique)
Sensibilité
(+40
kHz
déviation)
Signal/bruit 30 dB
Signal/bruit 26 dB
Signal/bruit 20 dB
IHF Sensibilité
IHF Sensibilité pour S/B 46 dB
1,9nV (3000), 1,3nV (750)
1,7uV (3000), 1,2HV (750)
1,5uV (3001), 0,9nV (752)
1,9uV (IHF ‘58)
25phV (750), STEREO
0,15%
Distorsion harmonique total
MONO
STEREO 03%
Signal/bruit (+40 kHz déviation) MONO 68dB (IHF: 75 dB)
STEREO 65 dB (IHF: 70 dB)
20 Hz ~ 19 kHz, +0,5dB, —1,5dB
75 dB
1,0 dB
55 dB
85 dB
80 dB
55 dB
Réponse de fréquence
Sélectvité en canaux alternés
Taux de capture
Réjection de fréquence image a 98 MHz
Réjection Fl a 98 MHz
Réjection de réception non sélective a 98 MHz
Suppression AM
Spezitikationen
kdnnen
infolge
von
Verbesserungen
ohne
Ankiindigung
geandert
werden.
Kanaltrennung kHz 45dB. 10kHz 35 dB
Hilfstragerdampfung (Pilotton)
9 kHz —35 dB (-—40 dB, !HF)
38 kHz —48 dB (—40 dB, IHF)
Begrenzungseinsatz 12yuv
Bandbreite ZF -Verstarker 180 kHz
Ratiodetektor 1000 kHz
Kanalabweichung {250 Hz ~6300 Hz) +1,5d8
AM-TUNERTEIL
Frequenzgang 525 ~ 1605 kHz
Empfindlichkeit (20 dB Rauschabstand) 30KV, 250nV /m
Selektivitat 30 dB
Spiegelfrequenz-Selektion bei 1000 kHz 50 dB
ZF-Festigkeit bei 1000 kHz 40 dB
ALLGEMEINE DATEN
Ausgangssapannung 0,6V
Leistungsaufnahme 16W
Netzspannung (50 Hz/60 Hz) 110V/120V/220V/240V
Abmessungen (B x H x T) 430 x 142 x 254: mm
Gewicht 4,2 kg
CARACTERISTIQU ES TECHNIQUES Sujet 4 changement sans préaris.
[DIN 45 500)
PARTIE TUNER FM
1kHz 45dB,10 kHz 35 dB
19kHz —35 dB (—40 dB, IHF)
38 kHz —48 dB (—40 dB, IHF)
12uVv
180 KHz
1000 KHz
+1,5dB
Séparation stéréophonique
Courant porteur de dispersion
Point limite
Largeur de bande Amplificateur Fl
Démodulateur FM
Equilibrage de canaux (250 Hz ~ 6300 Hz)
PARTIE TUNER AM
Gamme recue
Sensibilité (Rapport S/B 20 dB)
Sélectivité
Réjection de fréquence image 4 1000 kHz
Réjection Fi a 1000 kHz
525 ~ 1605 kHz
30uV , 250h\//m
30 dB
5O dB
40 dB
GENERALITES
Tention de sortie 0,.6V
Consommation 16W
Alimentation (50 Hz/60 Hz) 110V/120V/220V 240V
Dimensions (L x H x P) 430 x 142 x 254 mm
Poids {2kg
m= CONTENTS
LOCATION
OF
CONTROLS.
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DIAL
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ALIGNMENT
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ALIGNMENT
INSTRUCTIONS
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ANWEISUNGEN
FUR
ABGLEICHUNG
(DEUTSCH)
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INSTRUCTIONS
D’ALIGNEMENT
(FRANCAIS)
LS
cnidhawr
dina
Paria
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alies
Pablo
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St
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BL
alse
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7
TO
REMOVE
CABINET
AND
BOTTOM
BOARD.
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8
BLOCK
DIAGRAM..........-
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8
REPLACEMENT
PARTS
LIST
(Electric
Parts):
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cidi
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crete
dare
ce
oc
teen
a
a,
Shae
Bre
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oct
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9~
10
PRINTED
CIRCUIT
BOARD
WIRING
VIEW.
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11
~
12
SCHEMATIC
DIAGRAM...
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13
~
15
BLOCK
DIAGRAM
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15
EXPLODED
VIEWS
...
0.2...
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16~
17
REPLACEMENT
PARTS
LIST
(Cablinet
&
Chassis
Parts)...
0...
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18
REPLACEMENT
PARTS
LIST
(Accessories
&
Packing
Parts)...
2...
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19
CHANGE
OF
PARTS
LIST.......-.-
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ST-B044K
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19
ACGESSORIES:
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PACKINGS
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MARK
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20

ST-8044/K
m LOCATION OF CONTROLS
(M@ON/FM
AUTO
=
OFF/FM
MONO)
MUTING/MODE
—-BAND
SELECTOR
ACTIVE SERVO LOCK
(MON = OFF)
orl
Technics ‘ [
my)
e)
= m
a
Cc
-
TUNING
SIGNAL
LEVEL
INDICATOR
FM
STEREO
INDICATOR
FM
TUNING
INDICATOR
ror
SERVO
LOCK
INDICATOR
GROUND
(UNBALANCED)
FM ANTENNA
(BALANCED) (3002)
VOLTAGE ADJUSTER
AM ANTENNA
FM MPX IC FM IF AMP & AM CONVERTER IC
AM BAR ANTENNA
POWER SUPPLY
FM RF AMP
pills Abe
FUSES
ERV(
L
a
CIRCUTR
Y
DC ANP IC
ae
FM IF AMP & DETECTOR IC
MUTING CIRCUITRY— SIGNAL LEVEL DRIVER

= DIAL CORD INSTALLATION GUIDE
e
For
threading
a
fresh
cord,
proceed
as
follows.
1.
Prepare
a
fresh
cord
more
than
180
cm
(70-15/16")
in length.
2.
Bring
the
variable
capacitor
into
a
state
where
the
drum
is
completely
turned
to
the
right
(maximum
capacity
and
lowest
frequency
for
the
variable
capacitor).
. Direct the cord in the order from 1 to 9.
4.
Stretch
the
cord
in
such
a
tension
as
the
spring
length
is
elongated
by
1.5
times
that
of
the
original
state.
5. Fix the knot of the cord with the bond.
Ww
m@ ALIGNMENT POINTS
Peo Nt ee Se q
112.52 I
750 1To Tuner
1502 !
To SG
|
|
50 Stereo
(SG
imp.
752),
Modulator
300M FM Oummy Antenna
Fig. 1
Output
Separation
nuemes* | = pa
PLL MPX VCO
(19kHz) Adj.
AM 1st IFT
AM 2nd IFT
© cam)
Muting Level
Adjustment
FM DISCRI
Coil
DC VTVM
x
Coil (100uH) PN ( )
(SLQX 101-2D) QO
AF OUTPUT WAVE FORM
Fig. 3
(C)
VR401
D-E: Stereo OFF Position.
Tuning Shaft
FM Signal
Generator
AM
OSC Coil
L202 3002 FM Antenna
Terminal
FM
A LS} ose coil
FM
FM RF
DET Coil
FM ANT
Trimmer
CT1
FM OSC AM OSC FM RF
Trimmer Trimmer DET Trimmer
A-8,
B-D: Stereo ON Position (Indicator Lighting).
C: Adjust Point of Pilot Circuit,
Fig. 4

mw
ALIGNMENT
INSTRUCTIONS
suaueeeneeeeeeeeees
ENGLISH
eee
Notes:
Band selector switch..........
FM muting & mode switch ....
. Active servo lock switch.......
AM/FM SIGNAL GENERATOR
CONNECTION FREQUENCY
AM (AM Alignment}
FM (FM Alignment)
off/mono
DIAL
SETTING
INDICATOR
(VTVM or SCOPE)
450kHz
(30% Mod.)
with 400 Hz)
(For United
Kingodom to
470kHz)
High side through
1} 0.001uF to AM antenna
trimmer terminal.
Common to chassis.
Fashion loop of several
2| turns of wire and radiate
signal into loop of
tuner
600kHz
(30% Mod.)
with 400Hz)
Fashion loop of several
3| turns of wire and radiate
signal into loop of
tuner
1500kHz
(30% Mod.)
with 400Hz)}
4 No-Signal
9OMHz
(100% Mad.)
with 400Hz)
weak input
106MHz
(100% Mod.
with 400Hz}
weak input
5} Connect to FM 3000
antenna terminal
through 3002 FM
dummy antenna.
Connect to FM 3002
7 antenna terminal
through 300M FM
dummy antenna.
1OOMHz
(100% Mod. *
with 400Hz)
Connect to FM 30020
antenna terminal
8| through 300M FM
dummy antenna.
Apply 16 dB (6.3uV) to
tuner
100MHz
(100% Mod.
with 400Hz}
FM MUTING LEVEL ALIGNMENT (Only product for [X, XA])
Connect to FM 3000
antenna terminal
g | through 300 FM
dummy antenna.
Apply 10dB (3.2nV) to
tuner.
100MHz
(100% Mod.
with 400Hz)
———_—
AM ALIGNMENT
ADJUSTMENT
POINTS
Connect AC VTVM or
Point of non-| scope to OUTPUT”
inter-ference | terminals.
Connect AC VTVM or
scope to “OUTPUT”
terminals.
600kHz
Connect AC VTVM or
scope to “OUTPUT”
terminal.
1500k Hz
7201 (1st IFT)
Z201 (2nd IFT)
L202 (OSC Coil)
L201 (ANT Coil)
C€T202 (OSC Trimmer)
CT201 (ANT Trimmer)
FM IF ALIGNMENT
Connect DC VTVM to
R110 resistor.
(Refer to fig. 2)
Point of non-
inter-ference
FM RF ALIGNMENT
Connect scope to
“OUTPUT” terminal.
Connect scope to
106MHz
“OUTPUT”
terminal.
T7101
(DISCRI IFT) A
. Maintain line voltage at rated voltage.
. 3002 FM dummy antenna
. . Refer to fig. 1
. Output of signal generator should be no higher than
necessary to obtain an output reading.
REMARKS
Adjust for maximum
output.
Adjust for maximum
output, Adjust L201 by
moving coil bobbin alang
ferrite core.
Adjust for maximum
output.
Repeat steps (2) and (3).
*FM muting/mode swi:ch
to ’on/auto”’ position.
eAdjust T101 (A) core so
that voltage measured in
signal mode is OV in
300mV range.
L5 (OSC Coil)
L3 (RF DET Coil)
L1 (ANT Coil)
CT3 (OSC Trimmer)
CT2 (RF DET
Trimmer)
CT1 (ANT Trimmer}
FM MONO DISTORTION ALIGNMENT
Connect distortin
meter to “OUTPUT”
terminals.
100MHz
Connect AC VTVM or
scope to “OUTPUT”
terminals.
1OOMHz
Connect AC VTVM
or scope to “OUTPUT”
terminals.
100MHz
FM MPX PILOT ALIGNMENT
Using a frequency counter
10O0MHz Non-modulated mono signal applied to set.
10 FM muting/mode switch to "on"
Connect frequency counter to TP401 through resistor (100k2).
Adjust VR401 to 19kHz, +30Hz.
11 signal to the tuner.
Connect AC VTVM or scope to output terminal through low pass
filter (fc = 15 ~ 19kHz).
T101
(DISCRI IFT) B
FM MUTING LEVEL ALIGNMENT (other products for [X, XA] )
VR150
(MUTING LEVEL)
VR150
(MUTING LEVEL)
Using alternate
e Add weak input so that
noise is included in the
output wave form.
«Make the adjustment so
that the output wave
form is vertically
symmetrical. (Fig. 3)
* Repeat the steps 5 and 6
until the frequency
correctly matches the dial
scale.
Set the FM muting/mode
switch to “on/auto” znd
then check step 4 in ro
signal mode.
elf it is deflected, re-acijust
A (primary side) of T1017.
eAdjust T101 (B) core so
that distortion of right.
and left channels are
minimized.
°FM muting/mode switch
to ‘‘on/auto”.
«Adjust so that output can
be obtained.
© FM muting/mode
switch to ‘‘on/auto’’.
e Adjust so that output
can be obtained.
system
1. Apply stereo signal from generator or stereo station to tuner,
2 Adjust VR401 until stereo indicator ligttts up. Cement arm
SEPARATION ALIGNMENT
PREPARATIONS ADJUSTING PROCEDURE
Add 100MHz, 1kHz, 30% pilot 10% modulation, 60dB stereo
of VR401 as shown in fig. 4.
FM muting/mode switch to “‘on/auto”’.
Adjust VR402 so that R output is minimized when stereo
output is minimized in R mode.
modulator is in L {Lch. modulation) mode and that L
mw
ANWEISUNGEN
FUR
ABGLEICHUNG
sees
DEUTSCH
(Fur Deutschland)
Anmerkungen:
1. Bereichsschalter
2. FM Muting/Mode Schalter . .
3. Active servo lock-Schalter .. off
AM/UKW MESSENDER
REQUENZ) nes TUNER
Hei&es Ende des Mefsen-
ders tiber einen 0.0014F
Kondensator an den AM parti
Antenneneingang schlieRen. 30%) +
Kaltes Ende an Masse ye
Das MeRsendersignal
induktiv in den Tuner
speisen. .
Hierzu behelfsmaRig eine (400Hz
F Modulat.,
Rahmenantenne fertigen 30%)
und an den Eingang
schlieBen.
Das MeRsendersignal
induktiv in den Tuner
speisen.
Hierzu behelfsma&ig eine (400Hz
; Modulat.,
Rahmenantenne fertigen 30%)
und an den Eingang
schlieBen.
450k Hz
600k Hz
1500kHz
Kein Signal
Mefsender liber eine 87.5MHz
Kunstantenne an den (400Hz
UKW-Antenneneingang Modulat.,
schlieBen. 100%
Me&sender Uber eine 9O0MHz
Kunstantenne an den (400Hz
UKW-Antenneneingang Modulat.,
schlieBen. 100%)
Mefsender iber eine 106MHz
Kunstantenne an den (400Hz
UKW-Antenneneingang Modulat.,
schlieBen.
ABGLEICH
AUF
MIN.
VERZERRUNG
IN
STELLUNG
UKW-MONO
100MHz
(400Hz
Modulat.,
100%)
Mefsender iiber eine
Kunstantenne an den
UKW-Antenneneingang
schlieRen.
Mefsender Uber eine
Kunstantenne an den
UKW-Antenneneingang
schlieRen.
MeRsender auf 16 dB
(6.3uV) einstellen.
1O0O0MHz
(400Hz
Modulat.,
100%)
AM (AM Abgieich}
FM (FM Abgleich)
off/mono
ST-8044/K
. Netzspannung auf ihren Sollwert haiten.
. UKW-Kunstantenne, 306 ohm Vgl. Abb. 1.
. Der Ausgang des MeRsenders darf nicht hoher sein als
unbedingt notwendig fur eine gute Ablesung.
ANZE!IGEGEIRAT
(Rdhrenvoltmeter oder
Oszillograph ozw.
Klirrfak tor-Me&gerat)
AM-ABGLEICH
SKALENZE!}-
GEREIN-
STELLUNG
ABGLEICHS-
PUNKTE BEMERKUNGEN
Wechseistrom Réhrenvolt-
Kein meter oder Oszillograph
Empfang iiber den Ausgang
“OUTPUT” schlieRen.
T201 (1. 1FT) (A)
T201 (2. IFT)
Auf max. Ausgang
abgieichen.
Auf max. Ausgang
abgleichen.
L201 wird abgeglichen,
indem die Spule am
Ferritstab
entlang-
“
geschoben
wird.
Wechselstrom Réhrenvoit-
meter oder Oszillograph
iéber den Ausgang
“OUTPUT” schleiBen.
L203 (Osc. Spule}
600k Hz 201 (Ant. Spule)
Auf max. Ausgang
abgleichen.
Schritt (2) und (3) sina
zu wiederholen.
CT202
(Osc. Trimmer)
CT201
(Ant. Trimmer)
Wechselstrom Réhrenvoit-
meter oder Oszillograph
uber den Ausgang
“OUTPUT” scheiRen.
1500kHz
UKW ZF-ABGLEICH
®FM muting/mode-Schalter
auf “on/auto’’.
®Den Kern von 1101 (A)
so justieren, da die
gemessene Spannung im
signallosenModus OV im
300mvV Bereich betragt.
Gleichspannungsmesser T101
Kein
tiber
den
Ausgang
R110
bare
Empfang
widerstand
schlieRen.
ee
et
(Vgl. Abb. 2)
UKW-HF-ABGLEICH
87.5MHz Oszillograph Uber den
(Frequenz | Ausgang “OUTPUT”
min. schlieRen.
© Einen schvachen Eingang
geben, bei den Gerausch
in der Ausgangswellen-
form enthaten wird.
#So einstellen, da die
Ausgangswellenform
vertikal synmetrisch
wird. (Abb 3)
e Die Einstelung von 5, 6
und 7 wiecerh oten, bis die
Frequenz nit der Skala
Ubereinstinmt .
L5 (Osc. Spule)
Oszillograph iber den
Ausgang “OUTPUT”
schtieRen.
L3 (Det. Spule)
Li (Ant. Soule)
CT3 (Osc. Trimmer)
CT2 (Det. Trimmer)
CTi (Ant. Trimmer)
Osziliograph uber den
Ausgang “OUTPUT”
schlieBen.
106MHz
©FM mutingmode-Schalter
auf “‘on/auto’’ stellen, .
dann in signal! oser Mode
den Schrit'4 feststellen.
eWenn Abveicnung 7
vorliegt, A(pr imare Seite)
von 7101 viecter i
einstellen.
©7101 (B) erm fir
»minimale Yerz errung der
rechten und limken Kandle
justieren.
K lirrfaktor-MeRbricke
iiber den Ausgang
"OUTPUT" schlieBen.
7101 (Diskriminator
100MHz FT) (B]
UKW-UKW-MUTING-ABGLEICH
eFM mutiny/m ode-Schalter
auf ‘‘on/auto’” .
© So einstellin, da® ein
Ausgang zi ve rnehmen
ist.
Wechselstrom ROhrenvolt-
meter oder Oszillograph
uber den Ausgang
“OUTPUT” schlieRen.
UKW-STEREO-DEKODER-ABGLEICH
Unter Verwendung eines Zahlers
Alternativ-MeSmethode
Unmoduliertes Mono-Signal 100MHz in das Gerat speisen.
. FM muting/mode-Schalter auf “‘on/auto” stellen.
. ZShier Uber einen Widerstand 100K ohm an TP403 schlieBen.
. VR401 auf 19kHz +30Hz einstellen.
1. Das Gerdt auf 100MHz, 1kHz 30%, Pilot 10% Modulation,
60dB Stereosignal einstellen.
2. Wechselstrom-Rohrenvoltmeter oder Oszillograph durch Tiefpat
filter (fc = 15 ~19kHz) an Ausgangsanschitisse des
Gerates anschlieRen.
. Stereosignal entweder von einem Stereogenerator-
oder einem Sender einspeisen.
. VR401 so einstellen, bis die Stereolampe auf leuctet.
Schleifer von VR401 sichern, wie in Abb. 4 gezeig.
KANALTRENNUNG-ABGLEICH
3. FM muting/mode-Schalter auf ‘‘on/auto’’.
4. VR402 auf minimale Anzeige des R-Ausgangs be iSte reo-
modulator in L-(L-Kanalmodulation) Modus, uncauf Minimale
Anzeige des L-Ausgangs in R-Modus abgleichen.

$T-8044/K ST-8044/K
m= TO REMOVE CABINET AND BOTTOM BOARD
+ To remove cabinet
Notes:
1.
Remove
the
4
screws.
(nos.
1)
~
@)
screws
in
fig.
5).
Oe
mw
INSTRUCTIONS
D'ALIGNEMENT
eos
FRANCAIS
1.
Sélecteur
de
gamme
{am
{Alignement
AM}
.
Conserver
fa
tension
du
secteur
a
la
tension
nominale.
=
+g:
FM
(Alignement
FM)
.
Antenne
fictive
FM
3009
Voir
fig.
1.
2.
Remove
the
4
screws.
(nos.
©
screws
in
fig.
6).
O~
2.
Commutateur
de
sitencieux
/mode
off/mono
6.
Le
signal
du
générateur
ne
doit
pas
étre
plus
élevé
qu'il
3.
Sliding
it
toward
@
direction
and
lifting
it
upward
as
:
3.
Commutateur
de
servo-verrouillage
.....
off
n'est
nécessaire
a
obtenir
une
lecture
en
sortie.
ee
Bele:
DICATEUR
(VOLT
Sewn
anG:
>
IN
:
: 2 P -
AM/FM
GENERATEUR
AIGUILLE
|
yeTRe
ELECTRONIQUE
POINTS
DE
4.
When
the
cabinet
is
installed,
insert
the
lug
of
cabinet
aie
FT
oun
OSCILLOSCOPE
OU
REGLAGE
OBSERVATIONS
~@
BRANCHEMENT
|
FREQUENCE
|
LE
CADRAN
into
the
space
between
the
front
pane!
and
chassis
as
DISTORSIONMETRE}
ens
shown
in
fig.
7.
ALIGNEMENT
AM
rs
Céte
chaud,
a
travers
C.A.
voltmétre
électro-
f
0.001
uF,
sur
le
trimmer
rosea
4
30%
Point
sans
|
nique
ou
oscilloscope
sur
|T201
(1
transfo
Fl)
|
Réglez
au
maximum
de
+
To
remove
bottom
board
Fig.
5
de
lantenne
AM,
par
400Hz)
signal
prise
de
sortie
de
Z201
(2
transfo
Fl)
|
signal
de
sortie.
1.
Remove
the
3
screws.
(nos.
Q)
oy
ap
screws
in
fig.
commum
an
shassis
Vappareil.
8)
:
:
Regiez
au
maximum
di
;
7
6
DP
Faire
une
boucle
de
600k
Hz
C.A.
voltmétre
electro-
gona
de
Le
Reglez
2.
Remove
the
4
feet
screws.
(nos.
“PD
~
45)
screws
in
®
iT
quelques
tours
et
rayon-
(modulé
4
30%}
GOOkHz
nique
ou
oscifloscope
sur
}|L202
(bobine
OSC)
L201
en
déplasant
|
fi
"
ner
le
signal
dans
le
°
prise
de
sortie
de
L201
(bobine
ANT)
:
Plosarii
ig.
8).
RC
oo
|
:
:
par
400H2z)
;
:
bobine
le
long
du
noyau
I
cadre
du
|‘ampli-tuner.
\‘appareil.
ce
ferrite,
3.
Remove
bottom
board.
|
'
é
Faire
une
boucie
de
1500kHz
C.A.
voltmétre
électro-
CT202
Réglez
au
maximum
de
©
|
=
quelques
tours
et
rayon-
(modulé
4
30%!
1500kHz
nique
ou
oscilloscope
sur
(trimmer
OSC)
signal
de
sortie.
|
ner
le
signal
dans
le
I
per
400Hz}
prise
de
sortie
de
CT201
Recommencez
les
étapes
-
—
cadre
du
|’ampli-tuner.
l'appareil.
(trimmer
ANT)
(2)
et
(3).
Rear
Side
|
ALIGNEMENT
FI-FM
ug
¢Commutateur
de
silencieux
via
Fig.
6
sur
‘‘on/auto”’.
‘
C.C.
voltmétre
sur
prise
*Régler
le
noyau
T101
(A)
:
P
ar
Sans
signal
Saael
sans
R110
résistance.
heey
diseri)
de
telle
sorte
que
le
voltage
prope
rape
(0)
(Voir
fig.
2)
mesuré
dans
le
mode
sans
@
signal,
soit
de
OV
dans
la
gamme
des
300mV.
Q—O
!
0-
ALIGNEMENT RF-FM
jf Cabinet Bottom Board
90MHz
¢Appliquer
une
entrée
faible
Branchez
sur
{a
prise
sa
L5
(bobine
OSC
de
telle
sorte
que
le
parasite
:
(modulé
a
;
.
b
)
: ;
d‘antenne
FM
a
traves
100%
Oscilloscope
sur
prise
de
|
L3
(bobine
DET)
soit
compris
dans
la
forme
une
antenne
fictive
FM
par
400Hz)
sortie
du
tuner.
L1
(bobine
ANT)
os
l‘onde
de
sortie.
Faire
le
réglage
de
telle
sorte
que
la
forme
de
|’onde
de
Can
o-
sortie
soit
verticalement
Chassis
——
ee"
Branchez
sur
la
prise
106MHz
Oscilloscope
sur
prise
de
|C13
(trimmer
OSC)
|
Symetrique.
(Woir
fig.
3)
d’antenne
EM
a
travers
imodele
a
106MHz
sortie.du
tuner.
C12
(trimmer
DET)
|
*Refaire
les
réglages
5
et
6
une
antenne
fictive
FM.}
100%
CT1
(trimmer
ANT)|
jusqu’a
ce
que
la
fréquence
;
ear
"|
par
400Hz)
corresponde
correctement
Fig.
7
ig.
avec
|échells
du
cadran.
REGLAGE
DE
LA
DISTORSION
FM
EN
MONO
m@
BLOCK
DIAGRAM
ePlacer
la
commutateur
Sourdine
FM/Mode
sur
Ei
Q3
1c301
h
:
MH
:
Ooi,
;
|
“on/auto’etvérifier
étazee
fe
aed
ge
7
Q301~305
Servo
Lock
Say
el
le
Tada
a
1O0MHz
Distorsiométre
sur
prise
de|1101
(Transfo
Fl
+
4
dans
un
mode
sans
signal.
g
ee
(2)
Q)
ACTIVE
Indicaty.
une
antenne
fictive
FM.|
100%
sortie
du
tuner.
discri.)
[B]
eS'il
est
déplacé,
re-réegler
A
Ql
(
92
Ceramic
Filter
SERVO
LOCK
6)
J
par
400Hz)
(cote
primaire)
de
T101.
Re
lp
/
|
/
\
|
|
@)
DC
AMPLIFIER
HRCUITAY
*Reégler
le
noyou
1101
(B)
EA
FIER
£;
Mix
I
\
+
de
telle
sorte
que
la
AM
See
ee
eH
6)
(7)
7
distorsion
des
canaux
droit
er
1
oes
6
Oe
Ms
Gs
Serres
Level
Indiczor
et
gauche
soit
fa
plus
faible.
\
1C101
é
@)
d
cee
:
Q306~310
i
WY
7
Cr
ae
Tse,
7
See
|
|||
a
a
i
REGLAGE
DU
SEUVIL
DU
SILENCIEUX
D’ACCORD
i
FM-1F
FM
PHASE]
[
FM-AF
ee
Branchez
sur
!a
prise
}
Aaa
ber
Cc
AMPLI-
()
ee
d’antenne
FM
4
travers
|
1OOMHz
Paes
electro-
oa
rages
as
=
—T
;
une
antenne
fictive
FM.|
(modulé
a
100MHz
ny
ite
Ose)
oe
Sue
ou
enc
ier
x
Sur
on/auto
:
|
DETEC-
BETEC-
Tuning
|
Niveau
de
sortie
du
100%
Prise.ce
sortie:ce
Regler
pour
obtenir
une
!
|
[TOR
TOR
Indicator:
générateur
16
dB
par
400Hz)
'appareil.
lecture
en
sortie.
teh
er
el
Lo}.
----
Y
(6.3uV).
!
—te-
ALIGNEMENT
DU
PILOTE
MULTIPLEX
FM
|
Ex
balne
Avec
un
fréquencemetre
Par
un
outre
systeme
a
Ceramic
\
*
a
.
»
>
’
2
.
.
.
’
.
.
ph
ta
,
s
cS
Fil
.
Signal
mono
100MHz
non
modulé
applique
a
l'appareil.
.
Appliquez
a
l'appareil
un
signal
stéréo
provenant
d’un
gégérateur
wee
(81)
Selector
NS
.
Commutateur
de
silencieux
sur
‘‘on/auto”’.
ou
de
la
réception
d’un
émetteur.
7
\
off
9
(53)
active
|
!
Branchez
le
fréquencemeétre
sur
TP401
a
travers
une
.
Régter
VR401
jusqu
a
ce
que
l‘indicateur
de
stéréophonic
s‘allume.
Servo
Lock
tifsos
Pi
Mucinaihiod
résistance
de
100k].
Collez
le
curseur
de
VR401
comme
indiqué
surlafig.
4.00
ff
pre
y
‘
Saad
ee Pet
ee
See
401!
‘
Stila
Atte
eee
0451
. Régler VR401 sur 19kHz +30Hz.
REGLAGE
DE
LA
SEPARATION
DES
CANAUX
pc
tine
+
Power
Source
FM STEREO
.
Ajouter
100MHz,
1kHz,
Modulation,
pilote
10%,
1.
Commutateur
de
silencieux
sur
‘‘on/auto”’.
3
MULTIPLEX
UTI
:
signal
stéréophonique
60aB,
4
lapparelt.
2.
Reégler
VR402
de
telie
sorte
que
ja
sortie
droite
soit
minimale
quand
AM
Ae
OLIEIER
©
(R}
Outro:
Brancher
un
voltmétre
électronique
C.A.
ou
un
oscilloscope
ja
commande
d’accord
stéreéophonique
est
dans
le
mode
gauche
a452
aux
bornes
de
sortie,
par
|'intermédiaire
du
filtre
passe-bas
{modulation
du
canal
gauche)
et
que
Ja
sortie
gauche
soit
w
Qao2
(fe
=
15
~19kHz).
minimale
dans
mode
droit.
+
Power
Supply
ip
Stereo Indicator

ST-8044/K
ST-8044/K
m=
REPLACEMENT
PARTS
LIST
---:::
Electric
Parts
NOTES:
1.
Part
numbers
are
indicated
on
most
mechanical
parts.
Please
use
this
part
number
for
parts
orders
2.
A
indicates
that
only
parts
specified
by
the
manufacturer
Part
No.
Part
Name
&
Description
Ref.
No.
;
Part
No.
Part
Name
&
Description
Ret
No:
|
Part,.No-
Part
Name
&
Description
et
cbaicied
_
ERD25TJ221
Carbon.
1/4W.
C350
ECCD1H181K
Ceramic,
180pF.
50V.
+10%
C414,
415
|
;
ECQM1H272KZ
Polyester,
0.0027uF,
50V.
+10%
Part
Name
&
Description
|
ERD25TJ103
Carbon,
;
1/4w,
c401
ECEA1ES470
Electrolytic.
47
uF.
25V
C418
i
,
ECEAICS471
Electrolytic,
470uF.
16V
|
ERD25TJ333
|
Carbon.
1/4,
C402
ECEA1HS100
Electrolytic.
10uF,
50V
C419
ECEA1AS221
Electrolytic,
220uF,
10V
aad
RESISTORS
aaa
rea
a
7
|
ERD25FJ101
Carbon,
3
1/4W,
C403
ECQM1H473KZ
Polyester.
0.047
uF,
50V,
+10%
\
oo
rs
ERD25TJ104
Carbon,
.
AW.
|
Dey,
+5%
c420
»
ECKDIH102ZF
Ceramic,
O00luF.
SOV.
*83%
RI
|
ERD25TJ104
Carbon.
100kQ.
1/4W.
+5%
ERD25TJ153
Carbon,
_
1/4w,
c404
ECQS1471Z
Polystyrene,
470pF.
25V.
9%
C450
|
|
ECEA25Z4R7_—
|
Electrolytic.
47uF.
—
25V
R2
—
A
ERD25FJI01
Carbon,
1000,
1/4W.
+5%
ERD25TJ102
|
Carbon,
1kQ.
—1/4W.
C405
ECEASOZR47
=|
Electrolytic.
O47
uF.
SOV
C451,
452
«|
«S|
ECEASOZR33°
|
Electrolytic,
O33uF,
S0V
R3
eRD25Ts562
|
Carbon,
5.6kQ,
1/4W.
25%
ERD25TJ182
|
Carbon,
,
1/4,
C406
ECEASOZR22
|
Electrolytic,
O22uF,
Bh
C453,
454
ECEASOZ3R3°
|
Electrolytic.
33uF,
SOV
R4
|
ERD25TJ333
|
Carbon,
33k,
+
1/4W.
5%
ERD25TJ151
Carbon.
_
1/4W,
c407
ECEASOMR47S
|
Electrolytic,
O47
uF.
SOV
C501,
502
|
ECEAICS102
Electrolytic,
1000uF,
16V
R5
|
|
ERD25TJ561
Carbon,
5600.
1/4W.
+5%
ERD25TJ102_—‘|_
Carbon.
1/4W.
C408.
409
ECQMIHI23KZ
|
Polyester,
0.012
uF.
SOV.
C504
| |
ECEAIAS102_—|
Electrolytic.
1000uF,
10V
a6
|
|
eRD25Tu222
|
Carbon,
22kQ.
1/4W.
+5%
C410,
411
ECQM1H272KZ
|
Polyester.
0.0027
uF.
SOV.
C505
|
ECEAIAS221
|
Electrolytic.
220uF,
10V
|
R7
|
|
BRD25TJ123
Carbon,
12kQ,
1/4W.
+5%
ERD25TJ392
|
Carbon,
39kQ,
=
1/4W.
C412,
413
ECKDIH471KB
Ceramic.
470
pF,
SOV.
C506,
507
A
|
ECKDHS103SE2
|
Ceramic.
O01uF.
400VAC.
+89%|
RB
|
BRD25TJ333°—
|
Carbon,
33kQ,
—1/4W.
+5%
ERD25TJ103
Carbon,
.
1/4W.
|
RQ
|
ERD25TJ222
|
Carbon,
2.2kQ.
1/4W.
+5%
ERD25TJ103
Carbon.
1/4,
R10
,
ERD25TJ471
Carbon.
470Q.
+5%
ERD25TJ821
Carbon,
1/4,
aU
ERD25TJ332
Carbon,
3.3kQ.
1/4W.
Ril
_,
ERD25TJ104
Carbon,
100kQ.
+5%
ERD25TJ223
=|
Carbon.
1/4,
|
ERD25TJ104
Carbon,
.
1/4,
R101
|
ERD25TJ102
Carbon,
1kQ.
1/4wW,
+5%
ERD25TJ224
Carbon,
220kQ.
1/4W.
R102.
103
ERD25TJ331
Carbon,
330Q.
1/4W,
+5%
ba
tacos,
Wiad
noses”
“arate
R104
:
|
ERD25TJ331
Carbon,
3300.
1/4W.
+5%
arbon,
. .
Part
No.
:
Part
Name
&
Description
.
No.
|
.
ipti
aioe
|
eauser
send
Chen.
BBEOL.
UAW
EEO
|
ERD2SFJERS
Carbon.
680.
yaw,
p
Ref.
No.
“ii
Part
No.
|
Part
Name
&
Description
R106
n
|
ERD25TJ221
Carbon,
2200.
1/4W.
+5%
INTEGRATED
CIRCUITS
CERAMIC
FILTERS
me
R107
ERD25FJ47
Carbon,
47Q.
1/4w,
+59
z
R108
!
Seeieas
Carbon,
ee
ee
a
AN217P-BB
—1C,
FM
IF
Amplifier
&
AM
Converter
|
SVFEIO7MS8A
Ceramic
Filter,
Red,
10.7MHz
R109
'
ERD25TI562
Carbon,
5.6kQ.
+5%
AN377N
2
IC,
FM
IF
Amplifier
&
Detector
SVFE107MS8B
|
Ceramic
Filter,
Blue,
10.67MHz
SVINJM4558D
—;:IC.
DC
Amplifier
CF101,
102
|
SVFEIO7MS8C
|:
Ceramic
Filter,
Orange,
10.73MHz
R110
|
ERD25TJ103
Carbon,
10kQ.
1/4w,
+5%
|
AN363N
;
IC.
FM
Multiplex
SVFE107MS8D
Ceramic
Filter,
Black,
10.64MHz
RIN
|
ERD25TJ272
|
Carbon,
2.7kO.
1/4W,
+5%
Ref.No.
|
|
Part
No.
Part
Name
&
Description
SWIFSTBIZE
«Me
Regulater
|
|
SVFEIO7MS8E
=|
Ceramic
Filter,
White,
10.76MHz
R112
'
|
BRD25TJ104
Carbon,
100kQ.
1/4W,
+5%
/
R113
ERD25TJ103_—
|
Carbon,
10kQ.
—1/4W.
#5%
CAPACITORS
TRANSISTORS
SVFEIO7MABA
=|
Ceramic
Filter.
Red.
10.
7MH2
R14
;
ERDZ5TI223
Carbon,
22kQ.
/4w,
+5%
C1
TI
BecnIaIbOK
lai
nae
FES
oe:
;
SVFE107MA8B
Ceramic
Filter,
Blue.
10.67MHz
R115
|
ERD25TJ104
Carbon,
100kQ.
1/4W.
+5%
]
C1
(XALJonly
|
A
|
ECKDHSIOIMB
Casas
oa
eo
SHOSTRG
ne
Qi
i
|
2SK49-H2
|
Transistor,
FM
RF
Amplifier
(FET)
CF103
!
SVFEIO7MABC
|
Ceramic
Filter.
Orange.
10.73MHz
RUT
|
ERD25TJ271
Carbon.
270Q.
1/4W,
+5%
i
Ic,
pF,
.
£20%
Q2
28C1047-C
|
Transistor,
FM
Mixer
|
SVFEIO7MA8D
|
Ceramic
Filter,
Black,
10.64MHz
R118
|
ERD25TJ104
Carbon.
100kQ,
1/4W.
+5%
c2
|
ECCDIH120KC
Ceramic.
12pF,
50V.
+10%
(Use
in
ranks
C
or
D)
|
SVFEIO7MA8E
|
Ceramic
Filter,
White,
10.76MHz
|
ERD25TJ102_—
|
Carbon.
1kQ.
+5%
a
Se
aore
ee
oe
oe
es
a3
2SC1675-L1
ireiaees
FM
Local
Oscilato
|”
(Use
pair
ranks!
as
same
as
CFIO1,
102
and
CFi03)
.
¥
=
se
in
ranks
L1
or
L2)
|
|
|
ERD25TJ103
Carbon,
10kQ,
1/4W,
+5%
re
eine
e
pets
rae
a.
ees
Q101,
102
28C1328-T
Transistor,
Muting,
Servo
Lock
Circuitry
| |
CF201
|
SVFSFU450B
Ceramic
Filter,
AM
450kHz
RIZ1,
122
pupae
cas
Carbon,
33kQ.
1/4W,
+5%
C7
ECCDIHOZ0CC
Beatie
au.
aa
<0.280F
PR
ctaoes
werieeis
on
(Use
2
nore
2
T
ish
:
R150
:
ERD25TJ33.
Carbon,
33kQ.
1/4w,
+54
.
.
aM
~
-
|
Transistor,
Level
Indicator
Switchin
:
_
R151
|
|
ERD25TJ104
Carbon,
100kQ.
a.
ty
c8
ECCDIHI81K
Ceramic.
180pF.
50V.
ae
Q151,
152,
153
2SC1328-T
|
Transistor,
Muting
Switching
:
COMPONENT,
COMBINATIONS
R152
ERD25TJ333
Carbon,
33kQ.
1/4W,
+5%
C12
|
ECCD1HO70DC
Ceramic,
7pF.
50V,
+0.5pF
saecags
Seuuetadk
.
(Use
ene
7
T
or
U)
Zl
EXRP103P102C
Component
Combination,
1kQ
&
O.01uf
R153
:
;
ERD25TJ224
Carbon,
220kQ.
1/4W.
+5%
!
i
:
7
.
Transistor,
moplifier
Z101
EXF3SLO4C
Component
Combination.
0.01
uF
(X3)
R154
|
ERD25TJ103
|
Carbon,
10kQ.
1/4W,
+5%
a
Pao
yl
pas
ae
at
Ap
|
(Use
in
ranks
F
or
G)
2201
SLIQF101-Z
Component
Combination,
AM
IFT
&
R155
ERD25TJ102
Carbon,
1kQ.
/4w,
+5%
Ge
PEEDIHISOKG
Coaae
ceed
ay
rate
Q450
2SA666AI-R
|
Transistor,
Muting
Switching
Detector
R156
i
|
ERD25TJ103
Carbon.
10kQ.
1/4w.
+5%
C17
|
|
ECKDIHIO2MDL
Ceram
3
Boat
F
BOV.
+2095
(Use
in
ranks
Q,
R-or
S)
Z501,
502
EXRFS203ZS
Component
Combination,
0.01uF
(X2)
R158
|
|
ERD25TJ393
Carbon,
39kQ.
+5%
i
i
1c
WUT
ae,
=
we
Q451,
452
|
28C1328-T
Transistor,
Muting
Switching
sit.
:
“ERD2STIIS4
|
Carbon,
160kQ,
1/4,
5%
ae
aie
Sepugeoc.
‘lceamin.
°
9
ae
ee
|
VR150
||
EVLS3AAOQ0B15
|
Muting
Level
Adjustment,
100k
Q(B)
R201
|
ERD25TJ152
Carbon,
15kQ.
1/4W.
+5%
.
Le
oe
vR401
|
|
EVTS3MA00B14_—
PI
|
9
C23
ECCDIHI81K
Ceramic,
180pF,
50V.
+10%
DIODES
‘
:
|
PLL
VCO
Adjustment,
10k
(2(B)
R202
_
|
ERD25TJ472
Carbon,
4.7kQ,
1/4W,
+5%
C25
ECCDIHO7ODR
|
Ceramic
Jor
SOV.
+05pe
VR402
|
|
EVLS3AA00B14
|
Separation
Adjustment.
10k
Q(B)
R203
ERD25TJ151
Carbon.
1500,
1/4W,
+5%
con
CE
eBIRGEMOD
Te
eas
rere
D1
SVD1S2687AA
__
Diode,
Variable
Capacitance
aoa
R204
|
|
ERD25TJ152
|
Carbon,
15kQ.
1/4W.
+5%
eramic,
NOON
Ee
ON
Oe
D101.150.151,
;
MAI50
|
Diode,
Servo
Lock
&
Muting
Switching
VARIABLE
CAPACITORS
R205
ERD25TJ333
|
Carbon,
33kQ.
1/4W.
+5%
_
|
ECCDINIGIK
Ceramic,
—
180pF,
SOV.
10%
201,
302,
303
ry
R206
i
ERD25TJ334
Carbon,
330kQ,
1/4W,
+5%
C101
ECQM1H223KZ
Polyester.
0.022uF.
50V.
£10%
450.
451.
503
\
CV1,
2. 3.
|
ECV5MD34X71G
|
Tuning
Gang.
FM
&
AM
(with
Trimme:
C102,
103
ECKD1H223ZF
Ceramic.
0.022uF.
50V.
+33%
201,
202
R207
i
ERD25TJ682
Carbon.
6.8kQ.
1/4wW,
+5%
u
2970
D103,
304.
305
LN21CP
|
Light
Emitting
Diode.
Stereo,
Tuning
&
i
|
i
C104,
105
ECKD1H103ZF
Ceramic,
O.0tuF..
SOV.
£88%
g
(CTI,
2, 3.
!
R208
ERD25TJ104
Carbon,
100kQ.
1/4W,
+5%
C106
ECKD1H223ZF
Ceramic
0.022
uF,
SOV.
+$2%
306,
307,
308
Signal
Level
Indicator
201,
202)
!
i
pao?
|
|
ERD25TJ1Z3_—
|
Carbon.
12kQ.
—
1/4W.
=
5%
C107
|
ECEAICS221_—_|
Electrolytic
220ur
16V
i
|
beet
|
ERD25TJ223
Carbon,
22kQ.
+5%
C108
|
|
EC@MIH473KZ
Polyester,
0047uF.
50V,
£10%
en
|
Seer
pace
Lock
Circuitry
Switching
FUSES
:
.
eRD25TJ684
|
Carbon,
680KQ.
1/4W.
+5%
a
p
iMeee
ee
Slice
0502
A)
sMmii2
-
Rectifier
Fl
re
_
XBA2ZCIOTRO
Fuse.
TIA
(250V)
R303,
304
ERD25TJ154
|
Carbon,
150kQ.
1/4W.
+5%
=e
eecneosnan
*l-electaliide.
¢
ae”
ea
D504
||
SVDMZ406B
_:-
Diode.
6V
Zener
Fz
|
A
|
XBAZCO4TRO
Fuse.
T400mA
(250V
)
R305
:
ERD25TJ683
Carbon,
68kQ.
1/4W,
+5%
C113
ECEA1HS100
peercitic.
10
F
;
50V
|
!
R306
|
ERD25TIGB2
=|
Carbon,
68kKQ.
1/4W.
45%
Ne
pee
Bisa
wAANSEGRMIERS
LAMPS
ao
ERD25TJ333
|
Carbon,
33kQ,
1/4W.
+5%
C14,
115
ECQM1H223KZ
|
Polyester
0.022uF,
5O0V.
+10%
-
as
an
~
PLI
i
>
seahanaeesooe
ci
Zoe
cuca
a
R308
|
ERD25TJ100
Carbon,
10Q,
1/4Ww,
+£5%
cu6
|
ECEA1ES101
Electrolytic.
100uF,
25V
SLA4P25
_
Coil,
FM
Antenna
erate
A
|
XAMRESS
|
Lamp:
Serve
tock
hdicstonG.ev
4Omei
4
R309
|
|
gRD25TI473—
|
Carbon.
47kQ.
—-1/4W.-
+5%
CN7
ECKDIH223zF
|
Ceramic,
0.022uF.
50v.
+93%
,
RLQY10S2
©
Coil,
Choke
|
tarp.
Qiat
Light
(690.285)
|
R310
|
ERD25TJ223——
|
Carbon,
22kQ.
=
1/4W,-
£5%
150
|
ECKDIHI0O3MD.
«|
Ceramic.
0.01
F.
=
SOV.
420%
:
SLD4P21-P
|
Coil,
FM
RF
Detector
t
:
R311
/
|
ERD25TJ272
Carbon,
2.7kQ.
1/4W.
+5%
C151
|
|
ECEASOZR47
Electrolytic,
O.47uF.
SOV
|
RLQY15G5
Coil,
Choke
SWITCHES
R312
ERD25TJ104
Carbon,
100kQ.
1/4W.
+5%
C152
|
ECEA5OZ1
Electrolytic.
1uF.
50V
»
SLO4P43-P
Coil,
FM
Oscillator
(with
C9,
C10.
C11)
-
7%
a
:
ae
R313.
i
ERD25TJ472
Carbon,
4.7kQ.
1/4W.
+5%
C154
|
ECEA5S0Z3R3
Electrolytic,
3.3uF.
50V
'
|
RLQY25S2
Coil,
Choke
Si
2
|
SSH357
|
Switch,
Band
Selector
&
Muting/
Mode
.
R314
ERD25TJ154
Carbon,
150kQ.
1/4W.
+5%
C201
|
ECKDIHIO3MD
|
Ceramic,
OOluF,
50V.
+20%
i
»
SLQXi80-2
Coil,
Choke
$3
,
SSHI05
|
Switch,
Active
Servo
Lock
R315,
ERD25TJ223
Carbon,
22kQ.
1/4W.
+5%
C203
ECKDIH103MD
|
Ceramic.
OOluF.
50V.
+20%
|
SLF2C15-Y
Coil,
AM
Antenna
S4
|
A,
ESL21182
|
Switch,
Power
Source
R316.
317
=|
—s|
ERDZSTJIO3—
|
Carbon.
10kQ.
+5%
C204
ECQSOS361Z
Polystyrene,
360pF,
50V.
£5%
ane
ae
au
Sscilatee
2
|
A;
ESE372
|
Switch.
Voltage
Aguster
=
oul,
Oke
ERD25TJ103
Carbon,
10kQ.
1/4W,
+5%
C205
|
ECCDIH100KC
Ceramic,
1OpF.
50v.
*+10%
;
SLI40513-Z
,
Transformer.
FM
Discriminator
R320
ERD25TJ103
Carbon,
10kQ.
1/4W.
+5%
C206
ECEA1JS4R7
Electrolyuc,
47uF.
63V
SLI2C125-P
'
Transformer.
AM
IF
|
R321
1
ERD25TJ153
Carbon,
15kQ.
1/4W,
+5%
C207
ECEA1CS330
Electrolytic.
33uF.
16V
|
SLT5J573
Transformer,
Power
Source
|
R322
ERD25TJ183
Carbon,
18kQ.
1/4W.
+5%
C208
ECQM1H333KZ
|
Polyester.
0.0334F.
50V.
*10%
R323
ERD25TJ223_
|
Carbon.
22kQ.
=1/4W.
5%
C209
|
ECCD1H150KC
Ceramic.
_—15pF.
SOV,
+10%
R324
|
ERD25TJ273
Carbon,
27kQ.
1/4W,
+5%
€212
(xALJonly)
A
|
ECKDHS102MD
|
Ceramic.
0.001
uF.
400VAC.
+
20%
R325,
ERD25TJ333_
|
Carbon.
33kQ.
1/4W.
+5%
C301
ECEA1HS100
Electrolytic,
10uF,
5OV
R326
ERD25TJ391
Carbon,
3902.
1/4W,
+5%
c302
ECEAOJS471
Electrolytic.
470uF.
6.3V
R327,
328
ERD25TJ331
Carbon,
3300,
1/4W,
+5%
C303
ECKD1H223ZF
Ceramic,
0.022uF,
50V.
+$8%
ERD25TJ271
Carbon,
2709,
+5%
C304
ECEA25Z4R7
Electrolytic,
4.7uF.
25V
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BOARD WIRING VIEW
380168.
(selector)
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Servo
lock)
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stereo)
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() PLI
(6.3V 40mA)
2SCI6
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1301
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ST-8044/K
5
6
7
8
9
10
11
m
SCHEMATIC
DIAGRAM
*
This
schematic
diagram
may
be
modified
at
any
time
with
the
development
of
new
technology.
302,308
MAIEO
1
i
os
|
Notes:
S1-1 ~$1-4 : Selector switch in ‘‘FM” position.
$2-1,
$2-2
:
FM
muting/mode
switch
in
“‘on/auto”’
position.
$3 : Active servo lock switch in “’on’’ position.
$4_: Power source switch in “on” position.
S5 : Voltage adjuster switch in ‘'240V” position.
Indicated
voltage
are
the
standard
values
for
the
unit
neasured
by
the
DC
electronic
circuit
tester
(high-impedance)
with
the
chassis
TUNING
&
taken
as
standard.
Therefore,
there
may
exist
some
errors
in
the
voltage
values,
depending
on
the
internal
impedance
of
the
DC
Cevets ie circuit tester.
Figures in.______ stand for DC voltage in FM (60dB signal reception) mode.
Figures in | + stand for DC voltage in AM mode.
Figures in<<_ > stand for DC voltage in FM stereo signal reception mode.
Figures in'( i} stand for OC voltage in servo lock circuit operation.
Figures in > , stand for DC voltage in FM (no signal) muting to on mode.
indicates
that
only
parts
specified
by
the
manufacturer
be
used
for
safety.
Signal lines <> FM ==> AM AF
. To represent transistors, Q is used instead of TR, (Ex. TR1>Q1)
cial
N jo
Pu
~ {6.3V 40maA)
|| |
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C110
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R302
680K
Ria 22K
“| RUS 100K
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0450
20022
Ri22 33K
cos
CIO? 16V 220
m™ BLOCK DIAGRAM OF IC
e
This
is
the
basic
block
diagram
of
the
inside
circuit
of
IC.
In
an
actual
circuit,
there
may
be
sometimes
idle
terminals
or
-
some
different
functions
other
than
the
basic
circuit.
Ist and EMITTER
IF AMP im IF AMP. iain
Lae
1€101 (AN217)
FM
IF
Amplifier
&
——
hae
AM Converter
SUP I5450E
STEREO
INO
Osc
POWER
IF
OUT
IF
IN
GROUND
SUPPLY
> FM R405 1.8K = (11)
:
J
Composit
Signal
L
8
vco
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7
g
|
ADJUSTMENT
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|
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(12)19kHz
OUTPUT
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|
1C401
(AN363)
(7) (9) Rai Rais i i
ested De-Emphasis eaoz | Ee Mulselen
RLL VCO . [SoVGar] 0-047 #
3 7 os "——19kHz Output
5
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2303
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BS
2
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(L)
(R)
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STEREO
GROUND
POWER
DIGe
MA!159
2
|
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OUTPUT
INDICATOR
SUPPLY
4
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2SC 1675, 2SC1684 OUTPUT
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1€102
(AN377)
1C301
(SVINJM4558D)
FM IF Amplifier & Detector . DC Amplifier

é
ST-8044/K
ST-8044/K
m EXPLODED VIEW
~
—_

AY
((
AM ANTENNA COIL
(L201)
ST-8044/K ST-8044/K
m@ REPLACEMENT PARTS LIST -:: Cabinet & Chassis Parts
NOTES:
1. Part numbers are indicated on most mechanical parts
Please use this part number for parts orders.
2. A indicates that only parts specified by the manufacturer
be used for safety
| Part No.
Part Name & Description
CABINET and CHASSIS PARTS
OWOMANAAARWN-
=
25 (EJonly
25 (X,XA,XAL]
25 (XGH,EG.
EB)
26
26 (XALJonly
27
27 (XAL]Jonly
SBN819
SGWT8044N
$US123-1
SBC197
SYE567-1
SBD19
SKD3610
| SDH475-1
_ SGX6609
i SGX6609-1
| SHP35
SDP1131
| SDZ051-2
| SGX6613
| SDT8057
| SHG1483
i RDR8-1
SHD3X1F
| SMP269
| $JS2103
SDD47-1
SDSA4121
SHR401-1
SJF4419-2
SJF3223
SGP1630-1A
SGP1630-1B
| SGPT8044D
SHR127
SHR131
| RJA23ZC
| QFC1207M
| SJR205
| SKA10410
SKU731
| SKLA7-1
| SGP9015-2
SGP9015-3
SHR5023
| SXE513-1
| SHS6111
| Knob, Tuning Control
| Panel, Front (Pearl Silver)
| Spring, Push Switches
Button, Push Switches
| Ornament. Dial Scale
| Knob, Power Source Switch
Scale, Dial
' Reflector Plate, Dial Light
Mounting, Dial Scale (Left Side)
| Mounting, Dial Scale (Right Side)
Paper, Dial Pointer Slide
Pointer, Dial
Cord, Dial 180cm(70-15/16")
| Ornament, Tuning Knob
Shaft, Tuning Ass’y (w/Flywheel)
Bracket. Servo Lock Indicator Lamp
Pulley, Dial Cord
Shaft, Pulley
Cover, Dial Light
Socket, Dial Lamps
Drum, Variable Capacitor
Spring, Dial Cord
Latch, Antenna Terminal & Scale
Ornament M'tg
Terminal, FM/AM Antenna
Terminal, Output
Rear Panel
Rear Panel
Rear Panel, SGP1630-1A with Name
Plate (SGT18090)
Bushing. AC Cord
Bushing, AC Cord
AC Cord, Power Source
AC Cord. Power Source
Terminal, AC Cord
Cabinet
Bottom Board
| Foot, Bottom Board
Plate, AC Cord M'tg
Plate, AC Cord M'tg
Rubber
Clamper, Lead Wire
Cloth, Cabinet
@ 86860868 8808
XTB3+ 8BFZ
XWC3BFZ
XTB3+16B
XTB3+ 8B
i XWG3
| XTB3-+10BFZ
| XTB3+8BEN
XTB4+8FFN
XTB3+10B
XTB3+10BFZ
XTB3+ 8FFZ
SCREWS and WASHERS
Screw Front Panel M’tg (Lower Side)
Washer, Front Panel Lower Screws
Screw, Feet M'tg
Screw. Bottom Board, Lamp Cover.
& Scale Mounting M'tg
Washer
Screw, Tuning Knob Ornament M'tg
Screw. Cabinet M'tg
Screw. Cabinet M’tg
Screw. Power Transformer M'tg
Screw, Rear Panel & Voltage Adjuster
M'tg
Screw, Front Panel M’tg(Upper Side)
(E) and (EG) are available in Scandinavia arcd
European only.
(X) and (XA) are available in Asia, Latin Ameria ,
Middle East and Africa only.
(XAL) is available in Australia only.
(XGH) is available in Holland only.
(EB) is available in Belgium only.

ST-8044/
m@
REPLACEMENT
PARTS
LIST
--:
Accessories
&
Packing
Parts
Part No. | Part Name & Description
__ACCESSORIES ane
. SSA253 » Cord. FM Indoor Antenna
. $JP2129-5 Cord. Connection Shield
» SJP5213-1 Plug Adapter. Power Source
PACKING PARTS
| SPP575 Polyethylene Bag
| | SPS1825 ' Pad, Left Side
P2
(XAL]Jonly
|
©
$PS1825-1
|
Pad,
Left
Side
P3
SPS1827
Pad,
Right
Side
P3
(XALJonly
|
i
SPS1827-1
|
Pad,
Right
Side
P4
{E}
:
SPG1803
|
Carton
Box
P4
(EG.EB.XGH)|
|
SPG1805
‘
Carton
Box
P4
(X.XA]
SPG1861
|
Carton
Box
P4
(XAL]}
'
SPG1863
©
Carton
Box
P5
|
»
SQF10057
:
Instructions
Book,
Printed
Matter
m CHANGE OF PARTS LIST
ST-8044K
(©.
(EG).
6,
(A),
(XAL),
(EB),
(XGH)
Note:
This
parts
list
included
only
the
changes
of
the
model
ST-8044
parts
list.
Change of Part No. pact N &D F
ar me escript
ST -8044K a scription
CABINET and CHASSIS PARTS
2 | sewreoaan
5 | svEser.
$B8D19
$BD19-1
Knob,
Power
Source
Switch
[ SKD3610 SKD3611 “} Scale, Dial
—
SGP1630-1A {E] | SGP1630-1C {E} | Rear Panel
1——
SGP1630-1B SGPT8044KX Rear Panel, SGP1630-1B with
[X, XA, XAL] {X, XA, XAL] Name Plate (SGT 19990)
SGPT8044D
SGPT8044KD
Rear
Panel,
SGP1630-1C
with
Name
Plate
[XGH,
EG,
EB]
[XGH,
EG,
EB)
|
(SGT19570)
$KA10410 | SKA10417 Cabinet
Toa —+
XT83+8BFN XTB3+8BFZ Screw, Cabinet M'tg
| XTB4+8FEN XTB4+8FFZ Screw, Cabinet M'tg
PACKING PARTS
SPG1803
(€]|
SPG1957
[€]
|
Carton
Box
“re SaaS
sPG1805 [EG, EB, XGH)
Moka SPG1959
| TEG. EB, XGH, X, XA] | Cat07 BOX
SPG1861 [X, XA] |
4
Isp
1863
[XAL]
|
$PG2033
[XAL]
|
Carton
Box
m ACCESSORIES
Al
(SSA253)
A2
(SJP2129-5)
A3
(SJP5213-1)

@ PACKINGS
P1 (SPP575)
max st-8084 —~—,
Front Side
ST-8044 |
Front Side
PS (SQF10057)
m@ NEW INDICATION MARK
The B&H mark has been used for the indication of specified parts for an assurance of safety, but it has been
changed to A\ mark. When replacing parts, be sure to use parts with correct numbers with reference to the
circuit drawing or the repair parts list.
—> /\ (new mark)
Printed in J apan
78114500 (> K.K.