Technics RS-X933 User manual

Dolby NR-Equipped
Stereo Double Cassette Deck
DC) [eousy -c wa]
SPECIFICATIONS
Ml CASSETTE DECK SECTION
Deck system Stereo cassette deck
Track system 4-track, 2-channel
Heads
(tape deck A) Rec/play Permalloy head
Erasing Double-gap ferrite head
(tape deck B) play Permailoy head
Motors
(tape deck A) Capstanireel table drive © DC servo motor
(tape deck B) Capstan/reel table drive OC servo motor
Recording system AC bias
Bias frequency 80 kHz
Erasing system AC erase
Tape speed 4.8 cmisec. (1-7/8 ips)
Frequency response (w/o Dolby NR)
NORMAL 30 Hz~16 kHz
40 Hz~15 kHz (DIN)
cro, 30 Hz~16 kHz
40 Hz~15 kHz (DIN)
METAL 30 Hz~18 kHz
40 Hz~17 kHz (DIN)
SIN
(signal
fevel
=
max
recording
level,
CrO,
type
tape)
Dolby C NR on 74 dB (CCIR)
Dolby B NR on 66 dB (CCIR)
Dolby NR off 56 dB (A weighted)
Technics
Service
Manual
ORDER NO. AD8904094C8
Cassette Deck
RS-X933
Color
(K)... Black Type
Area
Country
(E/E5) | Continental Europe. | tk) |
(EB) | Great Britain. | (kK)
(K)
(K)
foo [esas |
(West Germany).
| (eo) | Thi ")
K
(GC) Third Region | Kk) |
Wow and flutter
Fast forward and rewind times
Approx. 110 seconds with C-60 cassette tape
Input sensitivity and impedance
0.1 % (WRMS)
LINE ; 60 mV/47 kQ
Output voltage and impedance
LINE 400 mV/800 Q
M@ GENERAL
Power
consumption
15
W
Power supply AC 50/60 Hz 220V
((EG) area only)
Dimensions (W x H x D) 360 x 129 x 270 mm
(14-3/16"" x 5-2/32”' x 10-5/8’’)
Weight
For [EG] area. 4. Okg (8.8 Ib.)
For others. 3, 5kg (7.7 |b.)
Note:
Specifications are subject to change without notice.
Weight and dimensions are approximate.
* Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“Dolby” and the double-D symbol are trade marks of
Dolby Laboratories Licensing Corporation.
Matsushita Electric Industrial Co., Ltd.
Central P.O. Box 288, Osaka 53(-91, Japan

RS-X933
@ CONTENTS
*Location of Controls...........
Hot to Connection ...............
¢ Disassembly Instructions
¢Information on Power Supply Jig ...........:::secseeees 9
Measurement and Adjustment Methodes..... 10~12
¢Terminal Function of IC’s
¢ Printed Circuit Boards.................0
Schematic Diagram............ccccccccesesssesesseeeees
li LOCATION OF CONTROLS
1 2) [3
[1] Power on/off switch (POWER)
sat ceaLacascecconsceecssaces ssssseeeeees (E, E5, GC, GN) areas.
Power on/stanby (!) switch (POWER)
dunce cacessadsdesassneuenieesdcndadcecucteaveaapavavesaceaaue (EG) area.
Deck on/off switch (DECK)................ (EB) area.
[2] Timer switch ({) TIMER)
This switch can be used to automatically begin a tape recor-
ding or tape playback at a certain time, selected by an op-
tional timer.
[3]Reverse-mode selector (REVERSE MODE)
This selector can be used for selection of the reverse mode
(for either playback or recording).
[4] Tape counter (DECK A COUNTER)
Indicates the amount of tape movement.
[5] Tape counter reset button (RESET)
This button can be used to reset the tape counter indication
to “O00”.
Page
¢ Terminal Guide of IC’s,
Transistors and Diodes..............cccccscsssssseseees 25
© Block Diagram. ...........ccccssscsessssesseseeessenssesensaees 26, 27
Wiring Connection Diagram ..............cccccsssssseeeee 28
Resistors & Capacitors.............cccsessseserenreees 29~32
Replacement Parts List (Electrical Parts)..... 33~35
Mechanical Parts Location (DECK A)............. 36, 37
e Replacement Parts List
(Mechanical Parts) ..............ccccsscessssssersees
Mechanical Parts Location (DECK B) is
Cabinet Parts Location. ............:.ccseccsessseenseees
[6]Input level meter (PEAK LEVEL)
During tape playback, this meter indicates the level of the
recorded sound source.
During recording, it indicates the level to which the record-
ing-level control has been adjusted.
Dolby noise-reduction buttons/indicators
(DOLBY NR)
These buttons can be used to reduce the hiss noise that is
characteristic of tape. This unit is provided with both the
B-type and C-type noise-reduction systems.
Edit-recording tape-speed buttons/ indicators
(EDIT SPEED)
These buttons can be used to select the recording speed
when a tape-to-tape recording is made.
[9]Synchro-start button (SYNCHRO START)
This button can be used to start a tape-to-tape recording,
simultaneously starting tape deck B (the playback deck) and
tape deck A (the recording deck).
[10] Recording-level control (REC LEVEL)
This control can be used to regulate the recording level of
tape deck A.

Cassette Deck
ORDER NO. AD8904094C8-A 4
RS-X933
DEUTSCH
MESSUNGEN
UND
EINSTELL
METHODEN
MeBinstrumente
¢ Elektronisches Voltmeter (EVM)
* Oszilloskop
° Digitaler Frequenzmesser
¢ Audiofrequenz-Oszillator
Tonkopf-Azimuteinstellung (Deck A/B)
1.
Spielen
Sie
auf
dem
Testband
(QZZCFM)
den
Teil
fir
die
Azimuteinstellung
(8kHz,
—20dB)
ab.
Drehen
Sie
die
Azimuteinstellschraube
so
lange,
bis
die
Abgaben
des
L-K
und
R-K
den
Hodchstwert
erreichen,
und
die
Lissajosscghe
wellenfigur
sich,
wie
abgebildet,
0
Grad
nahert.
Anmerkung:
When
L-K
und
R-K
nicht
auf
demselben
Punkt
ihren
Hochstwert
erreichen,
stellen
Sie
beide
Kandle
auf
den
jeweiligen
Héchstwert
und
gleichen
dann
aus.
.
Nehmen
Sie
denselben
Ejinstellvorgang
in
der
Wiedergabestellung
vor.
Bandgeschwindigkeits-einstellung (Deck A/B)
Normale Geschwindigkeit
. Den Wahlschalter fiir Editier-Bandgeschwindigkeit auf
“x1” stellen.
. Den mittleren Teil des Prifbandes (QZZCWAT)
wiedergeben.
. Deck B= VR902 und Deck A=VR903 so einstellen, daB
Einstellung der
Wiedergabeverstarkungsregelung (Deck A/B)
1. Spielen Sie auf dem Testband (QZZCFM) den Teil fir die
Einstellung der Verstarkungsregelung (315Hz, 0dB) ab.
Wiedergabefrequenzaang (Deck A/B)
1. Spielen Sie auf dem Testband (QZZCFM) den Teil far den
Frequenzgang (315Hz, 12,5kHz~63Hz, —20dB) ab.
¢ Dampfungswiderstand
¢ Gleichstrom-Voltmeter
e Widerstand (600Q)
Priifung des Pegelunterschiedes bei Vorwarts-
und Riickwartsdrehung
3. Den Abschnitt fur Verstarkungseinstellung (315Hz, 0dB)
des Prifbandes (QZZCFM) wiedergeben und
sicherstellen, daB der Pegelunterschied bei Vorwarts-
und Rackw&rtsdrehung kleiner alS 1B ist.
.
Nach
der
Einstellung
Schrauben-Sicherungsmitte!
an
die
Azimuth-Einstellschraube
geben.
Hohe Geschwindigketi
4. Den Wahlschalter fir Editier-Bandgeschwindigkeit auf
“x2” stellen und den Prifmoduspunkt und GND
verbinden.
. Den mittleren Teil des Prufbandes (QZZCWAT)
wiedergeben.
. Deck B= VR901 so einstellen, daB der Ausgang dem
Sollwert entspricht.
. Stellen Sie VR3 (L-K) [[VR4 (R-K)]] far Deck B uon VR5
(L-K) [[VR6 (R-K)]] far Deck A so ein, daB die Abgabe den
Normwert erfillt.
.
Achten
Sie
darauf,
daB
der
Frequenzgang
fir
beide
Kanale
(L-K,
R-K)
in
dem
in
Abb.
6
gezeigten
Bereich
liegt.

Léschstromeinstellung (Deck A)
1.
Die
leere
Metaliband-Prifkassette
(QZZCRZ)
einsetzen
und
das
Gerat
auf
Aufnmahmepause
schalten.
. VR301 so einstellen, daB der Ausgang zwischen TP3
und GND dem Sollwert entspricht.
Gesamtfrequenzgang (Deck A)
.
Legen
Sie
das
normale
Leertestband
(QZZCRA)
ein
und
stelien
das
Gerat
auf
Aufnahme-/Pause-Betrieb.
.
Geben
Sie
ber
einen
Lautstarkeregler
ein
Bezugseingabesignal
(1kHz,
—
24dB)
ein.
.
Stellen
Sie
das
Signal
auf
20dB
und
justieren
die
Frequenz
von
50Hz~10kHz.
. Nehmen Sie das Wobbelsignal auf.
.
Geben
Sie
das
aufgenommene
Signal
wieder
und
achten
darauf,
daB
dieses
sich
im
Vergleich
zur
Bazugsfrequenz
(1kHz)
in
dem
in
Abb.
8
aufgezeichneten
Bereich
befindet.
Einstellung der Gesamtverstarkungsregelung (Deck A)
. Legen Sie das normale Leertestband (QZZCRA) ein und
stellen das Gerat auf Aufnahme-/Betrieb.
. Legen Sie ein Bezugseingabesignal (1kHz, —24dB) an.
Stellen Sie das Ausgangssignal auf einen Pegel von 0.4V
ein.
. Nehmen Sie das Eingabesignal auf.
. Sollte das Signal nicht im Normbereich liegen, justieren
Sie VR303 (L-K) und VR302 (R-K), so da®B der Frequenz-
pegel mit der Norm Ubereinstimmt.
. Wiederholen Sie die Schritte 2~6 und verwender das CrO
2 Band (QZZCRX) und das Metallband (QZZCRZ). Der
Frequenzbereich wird auf 12.5kHz (50Hz2z~12.5kHz)
angehoben.
. Achten Sie darauf, da® sich der Frequenzpegel in dem in
4,
Abb. 9 aufgezeigten Bereich befindet.
Geben Sie das in Schritt 3 oben aufgenommene Signal
wieder und achten Sie darauf, daB das Ausgangssignal
mit dem Normwert Ubereinstimmt.
.
Sollte
der
Wert
nicht
innerhalb
der
Norm
liegen,
justieren
Sie VR7 (L-K) und VR8 (R-K).
.
Wiederholen
Sie
die
Schritte
2~5
von
oben
so
lange,
bis
das Ausgangssignal im Normbereich liegt.

RS-X933
FRANGAIS
METHODES DES MEASURES ET REGLAGES
Appareils de mesurage
e Voitmétre électronique
* Oscilloscope
¢ Compteur de fréquence numérique
¢ Oscillateur de fréquence audio
Reglage Azimutal de la tete (Platine A/B)
1. Faire jouer la portion du réglage de l’azimuth (8kHz,
— 20dB) de la bande d’essai (QZZCFM). Ajuster ta vis de
ta mise au point azimutale jusqu’a de que les sorties du
canal de gauche et du canal de droite soient maximisées
et que la forme d’onde de Lissajous, comme il est iflustré,
approche de 0 degré.
Nota:
Si le canal de gauche et canal de droite ne sont pas
maximisés au méme point, régler le point ou les niveaux
de chaque canal sont maximiséset égaux.
2. Effectuer le méme r&e 19 mglage sur le mode d’audition.
° A.T.T. (Atténuateur)
© Voltmétre a C.C.
e Résistance (600Q)
Vérification de la difference de niveau pour les
deux sens de rotation
3. Introduire une bande métal vierge prévue pour les essais
(QZZCPZ) et vérifier que la différence de niveau pour lés
déux sens de rotation est inférieure a 1dB.
4. Aprés cela, mettre une goutte de vernis de blocage sur la
vis de régiage de !’azimut.
Réglage de la vitesse de défilement Vitesse (Platine A/B)
normal
. Placer le sélecteur de vitesse d’édition sur la position
“xT”,
. Lire la partie centrale de la bande d’essai (QZZCWAT).
. Régler VR902 pour la platine B et VR901 pour la platine A
de maniére que la sortie ait la valeur standard.
Reglage de L’amplification de Lecture (Platine A/B)
1. Faire jouer la partie réglée de l’'amplification (315 Hz, 0dB)
de la bande d’essai (QZZCFM).
Reponse en Frequence de la Lecture (Platine A/B)
1. Faier jouer la partie de la réponse en fréquence (315 Hz,
12.5kHz, —63Hz, —20dB) de la bande d’essai (QZZCFM).
Grande vitesse
4. Placer le sélecteur de vitesse d’édition sur la position
“x2” et relier le point de test et la masse (GND).
5. Lire la partie centrale de la band d’essai (QZZCWAT).
6. Régler VR901 pour la platine B de maniére que la sortie
ait la valeur standard.
2. Régler ia platine B: VR3 (canal de gauche) [[VR4 (canal de
droite)]}] et la platine A: VR5 (canal de gauche) [[VR6
(canal de droite)]] de telle sorte que la sortie soit en dega
de la valeur standard.
2. S’assurer que la réponse en fréquence soit en dega de la
plage montrée dans Ia Fig. 6, a la fois pour le canal de
gauche et le canal de droite.
FRANCAIS FRANCAIS
RS-X933
Réglage du courant d’effacement (Platine A)
1. Introduire une bande métal vierge prévue pour les essais
(QZZCRZ) et régier l'appareil en mode de pause
d’enregistrement.
Reponse en Frequence Totale (Platine A)
. Introduire la bande d’essai vierge normate (QZZCRA) et
régier l’appareil sur le mode d’intermission d’un disque.
. Appliquer un signal d’entrée de référence (1kHz, — 24dB)
par l’intermédiaire d’un atténuateur.
. Diminuer te signal de 20dB et régler la fréquence de
50Hz~10kHz.
. Enregistrer le balayage de fréquence.
. Faire jouer le signal enregistré et s’assurer qu’i! soit en
dega de la plage montrée a la Fig. 8 en comparaison a la
fréquence de référence (1 kHz).
Reglage de L’amplification Totale (Platine A)
. Introduire la bande d’essai vierge normale (QZZCRA) et
régler l'appareil sur le mode d’intermission d’un disque.
. Appliquer un signal d’entrée de référence (1kHz,
—24dB). Diminuer la sortie de telle sorte que son
niveau devienne de 0.4V.
. Enregistrer ce signal d’entrée.
. Régler VR301 de maniére que la sortie entre TP3 et
GND ait la valeur standard.
. Sil n’est pas en dega de la plage standard, régler VR303
(canal de gquche) et VR302 (canal de droite) de telle
sorte que le niveau de fréquence soit en dega de !a plage
standard.
. Répéter les étapes 2~6 ci-dessus en utilisant la band
CrO, (QZZCRX) et la bande métallisée (QZZCRX) en
augmentant la plage de fréquence a 12.5kHz
(50Hz~12.5kHz).
. S’assurer que le niveau soit en dega de la plage montrée
a la Fig. 9.
. Faire jouer le signal enregistré a l’étape 3 ci-dessus, et
s’assurer que la sortie en dega de la valeur standard.
. Si elle n’est pas en dega de la valeur standard, régler VR7
(canal de gauche) et VR8 (canal de droite).
. Répéter les étapes 2~5 ci-dessus jusqu’a ce que la sortie
soit en dega de la valeur standard.

Ajuste de !a Corriente de Borrado (Platina A)
ESPANOL
[METODOS
DE
AJUSTE
Y
MEDIDA
|
. Regule VR301 de modo que la salida entre TP3 y GND
esté dento de los valores estandares.
1. Inserte la cinta de prueba metalica en blanco (QZZCRZ) y
ponga el aparato en la modalidad de pausa de grabacién.
Respuesta de Frecuencia Total (Platina A)
Instrumento de medicién
* EVM (Voltimetro electrénico)
¢ Osciloscopio
¢ Frecuencimetro digital
¢ ATT (Atenuador)
¢ Voltimetro CC
e Resistor (600Q)
. Si no esta dentro de la gama de frecuencia, ajustar
VR303 (CH-I) y VR302 (CH-D) de manera que el nivel de
.
Poner
una
cinta
virgen
normal
(QZZCRA)
y
poner
la
unidad
en
la
modalidad
de
Pausa
de Grabacién.
¢ Oscilador AF
Ajuste Azimutal de Cabeza (Platina A/B)
1.
Reproducir
la
porcién
de
ajuste
azimutal
(8kHz,
—20dB)
de
la
cinta
de
prueba
(QZZCFM).
Variar
el
tornillo
de
ajuste
azimutal
hasta
que
las
salidas
del
CH-1
y
CH-D
se
maximicen
y
forma
de
onda
de
lissajous,
como
ilustrado,
se
acerque
a
grado
0.
Nota:
Si
CH-I
y
CH-D
no
son
maximizados
en
el
mismo
punto,
ajustar
al
punto
donde
los
niveles
de
cada
canal
sean
maximizados e igualados.
.
Efectuar
el
mismo
ajuste
en
la
modalidad
de
reproduccién.
Ajuste
de
la
Velocidad
de
la
Cinta
(Platina
A/B)
Velocidad normal
.
Lleve
a
“x1”
el
selector
de
la
velocidad
de
la
cinta
de
edicién.
.
Reproduzca
la
seccién
central
de
la
cinta
de
prueba
(QZZCWAT).
.
Ajuste
la
platina
B=
VR902
y
la
platina
A=
VR903
de
modo
que
la
salida
quede
comprendida
dentro
de
los
valores
estandares.
Ajuste de Ganancia de Reproduccion (Platina A/B)
1. Reproducir la porcién ajustada de ganancia (315 Hz, 0dB)
de la cinta de prueba (QZZCFM).
Comprobacién de la diferencia de nivel de giro
hacia adelante y hacia atras
3.
Reproduzca la parte del adjuste de ganancia (315Hz,
OdB) de la cinta de prueba (QZZCFM) y juego asegurese
de que la diferencia de nivel de giro hacia adelante y
hacia atras sea menor que 1dB.
. Después del ajustc, aplique pintura de fijacién al tornillo
de ajuste del azimut.
Alta velocidad
4.
Lleve a “x2” el selector de la velocidad de la cinta de
edicién y conecte GND y el punto de la modalidad de
prueba.
. Reproduzca la seccién central de la cinta de prueba
(QZZCWAT).
. Ajuste la platina B= VR901 de modo que la salida quede
comprendida dentro de los valores estandares.
. Ajustar la Platina B: VR3 (CH-I) [[VR4 (CH-D)]] y la Platina
A: VR5 (CH-I) [[VR6 (CH-Dj] de manera que la salida esté
dentro del valor estandar.
Respuesta
de
Frecuencia
de
Reproduccion
(Platina
A/B)
2.
1.
Reproducir
la
parte
de
respuesta
de
frecuencia
de
reproducci6n
(315
Hz,
12.5kHz~63
Hz,
—20dB)
de
la
cinta
de
prueba
(QZZCFM).
Asegurarse de que la respuesta de frecuencia esté
dentro de la gama mostrada en la Fig. 6 para ambos CH-!
y CH-D.
.
Aplicar
la
sefial
de
entrada
de
referencia
(1kHz,
—24dB)
a
través de un atenuador.
.
Atenuar
la
sefial
por
20dB
y
ajustar
la
frecuencia
de
50H2~10kHz.
. Grabar el barrido de frecuencia.
. Reproducir la sefial grabada y asegurarse de que esté
dentro de la gama mostrada en la Fig. 8 en comparaci6n
con la frecuencia de referencia (1kHz).
Ajuste de Ganancla Total (Platina A)
. Insertar la cinta de prueba en blance normal (QZZCRA) y
poner la unidad en modalidad de pausa de Grabacion.
.
Aplicar
la
sefial
de
entrada
de
referencia
(1kHz,
—24dB).
Atenuar
la
salida
de
manera
que
su
nivel
se
haga
0.4V.
. Grabar la sefial de entrada.
frecuencia esté dentro de la gama estandar.
.
Repetir
los
pasos
2~6
de
arriba
utilizando
la
cinta
CrOz
(QZZCRX)
y
la
cinta
metalica
(QZZCRZ)
incrementando
la
gama
de
frecuencia
a
12.5kHz
(50H2~12.5kHz).
.
Asegurarse
de
que
el
nivel
est&e
19mdentro
de
la
gama
mostrada en la Fig. 9.
.
Reproducir
la
sefial
grabada
en
el
paso
3
de
arriba
y
asegurarse
de
que
la
salide
esté
dentro
del
valor
estandar.
.
Sino
esta
dentro
del
valor
estandar,
ajustar
VR7
(CH-I)
y
VR8 (CH-D).
.
Repetir
el
paso
2~5
de
arriba
hasta
que
la
salida
esté
dentro del valor estandar.
Printed in Japan
H890406310 YY/TN

10} [14} | 8) [12)13)1
[1]Cassette holder
[2]Remote-control indicator
(REMOTE CONTROL)
This indicator illuminates to indicate that this tape deck can
now be controlled by the remote-control transmitter.
[3] Reverse-side indicator (<)
This indicator illuminates, during playback or recording of
tape deck A, to indicate that side ‘‘B” of the tape is being us-
ed.
[4] Forward-side indicator (>)
This indicator illuminates, during playback or recording of
tape deck A, to indicate that side “A” of the tape is being us-
ed.
[5] Playback indicator (PLAY)
When this indicator illuminates steadily, it indicates that this
tape deck is in the playback mode or the recording mode.
(for tape deck A only)
When it flashes continually, this is an indication that the tape
deck A is in the pause mode or the recording stand-by mode.
[6] Recording indicator (REC)
This indicator illuminates to indicate that the tape deck A is in
the recording stand-by mode or is recording.
Eject button (4 /EJECT)
This button can be used to open the cassette holder.
RS-X933
8; {9} (10) [11] (8
[8] Fast-forwardicue, rewind/review buttons
(<<>P>)
These buttons are used to advance or rewind the tape. Dur-
ing playback these buttons are used to cue or review while
listening to the contents at high speed.
[9]Reverse-side playback button (</PLAY)
This button can be used to start the playback or recording (of
deck A only) of side ‘“‘B” of the cassette in this tape deck.
(The tape will then begin moving in the right-to-left direction.)
Stop button (M/STOP)
This button can be used to stop tape movement.
[11] Forward-side playback button (b>/PLAY)
This button can be used to start the playback or recording (of
deck A only) of side “A” of the cassette in this tape deck.
(The tape will then begin moving in the left-to-right direction.)
[12] Pause button (#8 PAUSE)
This
button
can
be
used
to
temporarily
stop
the
tape
playback
or recording of deck A only.
[13] Automatic-record-muting button
(QO AUTO REC MUTE)
This
button
can
be
used
to
make
(during
recording)
a
silent
interval
on
the
tape.
[14] Record button (@ REC)
This button can be used to change the tape deck A to the
recording stand-by mode.

RS-X933
Mi HOW TO CONNECTION
Turntable
REMOTE/
syncurorecc §=—s(€“<S<sé‘ité‘é‘*é«sK Rt incl)
Tuner
(not included)
RH OMHURY AOR Y
goed n a
REmoTE contro. Graphic
INPUT OUTPUT equalizer
©) ‘0
(not included)
@ “GND?” terminal of the amplifier
This terminal is for use with a turntable which has a ground wire.
@ “EXT” terminals of the
amplifier
When these terminals are not in use, be INPUT
sure to insert the shorting pins (included).
OUTPUT
Shorting pins
Connection diagrams shown are for connections to a
Technics hi-fi component system.
Make connections in the numbered sequential order.
[1]Connect the stereo connection cables
(included with the turntable, tuner, graphic equalizer,
compact disc player and cassette tape deck).
[2]Connect the L-type cables
(included with the turntable, compact disc player,
graphic equalizer and cassette tape deck).
Note:
Connect the L-type cables included with a compact
disc player as illustrated below in either case:
eWhen a graphic equalizer does not have the
remote control terminals.
When a graphic equalizer is not used in combina-
tion with these components.
Compact disc player
REMOTE
17)
Cassette tape deck
OUT
REMOTE
CONTROL

Turntable (not included)
Household AC outlet a]
AC OUTLET
CONTROL
AMPLIFIER
(e23]
fe
Tuner
(not included)
oXo)
~AC IN
[3-2] [Except (EG) area]
AC OUTLET
ee
Graphic equalizer
(not included)
Compact disc player
(not included)
AC OUTLET
°
@ About the AC outlets of the each components
Do not connect video-related equipment (such as a TV, etc.) to the AC outlets of
these components. (These outlets are especially for audio equipment.) Also do not
exceed the indicated power ratings when connecting to these outlets.
¢ “SWITCHED?” outlet (For tuner)
Power is controlled by the power switch.
¢ “UNSWITCHED” outlets (For amplifier, compact disc player, graphic
equalizer)
Power is always available, regardless of power switch setting.
RS-X933
[3-1] Connect the 3-core flat cable
(included with the tuner).
[3]Connect the flat cables.
[3-2] Connect the 3-core flat cable
{included with the cassette tape deck).
[4]Connect the AC power supply cords.
Connect this cord only after all other cables and
cords have been connected.
Notes:
1. The configuration of the AC outlet and AC power
supply cord differs according to area.
2. Connect the AC power supply cord included with a
compact disc player to the AC outlet of the
amplifier as illustrated below in either case:
When a graphic equalizer does not have the AC
outlet.
e When a graphic equalizer is not used in combina-
tion with these components.
Amplifier
AC OUTLET
~AC IN
Compact disc player
AC OUTLET

RS-X933
@
DISASSEMBLY
INSTRUCTIONS
Removal
of
the
Cabinet
Removal
of
the
Front
Panel
1. Remove the 8 flat cables (CN3, CN4,
1+2 CN5, CN6, CN7, CN8, CN9, CN10).
2. Remove the 2 connections (CP1, CP2).
3. Remove the 3 screws (@~®).
4. Remove the front panel in the
direction of the arrow.
Procedure | ie Es EB, GC, GN] areas.
1. Remove the 8 screws (@~®).
1-2-3
Rear Panel
How to remove the flat cable
¢ Pull out the flat cable while 1. Lift the connector.
pressing the connector. 2. Pull out the flat cable.
My. Flat cable
y Flat cable | je
Connector
[EG] area.
1. Remove the 10 screws (O~®@®).
2. Release the 2 claws of the AC OUT LET cover.

Ref.No. | Removal of the Power/Timer/Reverse 2. Remove the 4 screws (@~®).
5 Mode/REC Level P.C.B. 3. Release the 1 claw.
Procedure | 1 Remove the rec level knob.
1-2-5
Cellophane
tape
Power Switch P.C.B.
eWind cellophane tape
around the knob and
pull it the direction of REC Level Knob.
the arrow.
Removal of the Mechanism Unit (DECK B)
1. Push the eject button.
. R r ~©).
Procedure
Removal
of
the
Mechanism
Unit
(DECK
A)
2.
Remove
the
4
screws
(@~@)
12-6 1. Push the eject button. Mechanism Unit
2. Remove the counter belt. (DECK A)
3. Remove the 4 screws (0~®). <
Eject Button
(DECK A)
Mechanism Unit
Eject Button (DECK B)
(DECK B)
Removal of the Eject Angle and Tape 3. Remove the eject angle in the
7
Counter
direction
of
the
arrow
@.
: 4. Remove the tape counter in the
Procedure | 1. Remove the spring. direction er jhe aoe ¥
12-67 | 9 Remove the 2 screws (O, @). .
Tape Counter

RS-X933
oe Removal of the Cassette Holder 2. Remove the cassette holder (DECK A)
in the direction of the arrow ©.
Procedure 3. Remove the cassette holder (DECK B)
1 28 1. aa ribs in the direction of the in the direction of the arrow ©.
Cassette Holder
(DECK A)
<J
Cassette Holder
(DECK B)
ai Removal of the Operation P.C.B.
1. Remove the 3 screws (@~®).
8—9 2. Release the 11 claws.

RS-X933
@
INFORMATION
ON
POWER
SUPPLY
JIG
e LOCATION
(Front view) (Rear view)
Voltage selector
(110/127 V/220 V/240 V)
Turntable terminal (DC 12V, 0.1A)
Spare terminal (AC 16V, 0.16A)
Tuner terminal (AC 9V, 0.6A)
Tape Deck terminal (AC 11V, 1A x2)
Power switch
AC cord
(AC 50/60 Hz 110/127/220/240V)
FL Display terminal (AC 3V, 0.2A)
¢
SCHEMATIC
DIAGRAM
(Reference)
0.01
Spare
AC
16V
0.16
Turntable
OC12V 0.1A
Fuse
F4(250V 1A)
bo ead
r
|
t
I
L
S2
VOLTAGE
< SELECTOR
Fuse
F3 (125V 1A)
|
BRN
pa |
| he
| ACSV 0.6A
28 BRN
Fuse
F4(125V 2A)
era |
(ACSOH2/ 60H:
110V/127V/220V /240V)
|
Tape
Deck
\ eed ACTIV 1Ax2
‘ | ; Fei25v 2A)
>< Power Supply JIG Parts No. \
@(E, ES) areas... cesesscescensteeenens $ZZA1062C | I
© (EB) 00a sccsscsssscosssossseerecossrsecsaeses $ZZA1063C | \ Fuse
© (GN) 1G 2 cseccssssescessssssessnsesseseee SZZA1064C| | io pe rey Osa)
© (GC) ACOs. siccssssccssanssccssesinsnasiovsess SZZA1065C { L ag}
\ ' aa FL Display
\ : AC3V 0.2A
GRY
!
1
be Sere:
¢ HOW TO CONNECT
Voltage
controller
Power
Supply
JIG

RS-X933
Mi
MEASUREMENT
AND
ADJUSTMENT
METHODES
Measurement Condition
¢ Rec. level control; Maximum e¢ Dolby NR switch; Off
® Timer switch; Off * Make sure heads are clean
e Reverse-mode selector switch; —_—. Make sure capstan and pressure roller are clean
¢ Edit-recording tape-speed selector; X1 e Judgeable room temperature 20+5'C (68+9° F)
Measuring instrument
¢ EVM (Electronic Voltmeter) © ATT (Attenuator)
© Oscilloscope ¢ DC voltmeter
© Digital frequency counter e Resistor (6009)
e AF oscillator
Test tape
© Head azimuth adjustment (8kHz, —20dB); QZZCFM ¢ Playback gain adjustment (315Hz, 0dB); QZZCFM
« Tape speed adjustment (3kHz, —10dB); QZZCWAT ¢ Overall frequency response, Overall gain adjustment
e Playback frequency response (315Hz, 12.5kHz, 10kHz, Normal reference blank tape ; QZZCRA
8kHz, 4kHz, 1kHz, 250Hz, 125Hz, 63Hz, —20dB); CrO, reference blank tape; QZZCRX
QZZCFM Metal reference blank tape; QZZCRZ
e Adjustment Points
MODE TEST POINT OVERALL FREQUENCY RESPONSE
(Soldered Surface) DECK A: VR303(Lch) (VR302 (Rch)) Line Line
MAINP.C.B.
|
So
eae’
out
in.
| (EG) area only]
PLAYBACK GAIN ADu.
DECK B: VR3 (Lch) {VR4(Rch)}
DECK A: VR5 (Lch) {VR6(Rch)}
~K
1C901
vr
[6]
6]
[9]
O}
vrs
VR4
VR5
VR301
6 VR303
VR902 ] vR302 a
appa vrs [@
URS Ope ee TP3 h> OVERALL GAIN ADJ.
VR7 DECK A: VR7 (Lch) {VR8(Rch)}
TP3
TAPE SPEED ADJ.
DECK B: VR902(X1), VR901 (X2) ERASECURRENTADJ. ERASE CURRENT
DECK A: VR903 (X1) DECK A: VR301 ADJ. TEST POINT

HEAD
AZIMUTH
ADJUSTMENT
(DECK
A/B)
ERASE
CURRENT
ADJUSTMENT
(DECK
A)
1.
Playback
the
azimuth
adjustment
portion
(8kHz,
—20dB)
KA
1.
Insert
the
Metal
blank
test
tape
(QZZCRZ)
and
set
the
unit
of
the
test
tape
(QZZCFM).
Vary
the
azimuth
adjusting
°©)°
to
the
Record
Pause
mode.
screw
until
the
outputs
of
the
L-CH
and
R-CH
are
-
=
2.
Adjust
VR301
so
that
the
output
between
TP3
and
GND
ERASE
HEAD
EVM
i i form, as illustrated, i is within the standard value.
maximized
and
the
lissajous
wavefo
illu
AeottG
(Electronic
approaches
0
degrees.
Q
Solanck
Note:
If
L-CH
and
R-CH
are
not
maximized
at
the
same
point,
5s
Standard
value:
190+5mA
(Metal)...EVM
Reading:
190+5mV
Fig.
7
meter)
adjust to the point where the levels of each channel
are maximized and equal. Fig. 1
2. Perform the same adjustment in the play mode.
3.
After
the
adjustment,
apply
screwlock
to
the
azimuth
E.
HEAD
(DECK
2)
R/P.
HEAD
(DECK
2)
OVERALL
FREQUENCY
RESPONSE
(DECK
A)
Normal
Overall
frequency
response
chart
(NR
OUT)
adjusting screw. P. HEAD (DECK 1) . Insert the Normal blank test tape (QZZCRA) and set the
unit to the Record Pause mode.
. Apply a reference input signal (1kHz, —24dB) through an
attenuator.
. Attenuate the signal by 20dB and adjust the frequency
from 50Hz~10kHz.
Azimuth Screw (Forward) Azimuth Screw (Reverse) . Record the frequency sweep.
. Playback the recorded signal and assure that it is within
Fig. 2 the range shown in Fig. 8 in comparison to the reference 50Hz 100Hz 200H2 S00H2 1kHz 2KHz
frequency (1kHz).
. If it is not within the standard range, adjust VR303 Fig. 8
Malden bles ADJUSTMENT (DECK A/B) (L-CH) and VR302 (R-CH) so that the frequency tevel is
:
:
eee
within
the
standard
range.
CrO,
Metal
Overall
frequency
response
chart
(NR
OUT)
1.
Shift
the
edit-recording
tape-speed
selector
to
“X1”.
*
Level
up
in
high
frequency
range
Increase
the
bias
current.
;
i
Aaa
2. Playback the middle portion of the test tape (QZZCWAT). ¢ Level down in high frequency range ...Decrease the bias current.
3. Adjust Deck B=VA902 and Deck A=VR903 so that the LINE OUT :
7. Repeat steps 2~6 above using the CrO, tape (QZZCRX)
output
is
within
the
standard
value.
:
and
the
Metal
tape
(QZZCRZ)
increasing
the
frequency
High
speed
range
to
12.5kHz
(50Hz~12.5kHz).
4.
Shift
the
edit-recording
tape
speed
switch
to
“X2”.
*
=
A
5.
Playback
the
middie
portion
of
the
test
tape
(QZZCWAT).
Digi
requeney
.
Assure
that
the
level
is
within
the
range
shown
in
Fig.
9.
6.
Adjust
Deck
B=VR901
so
that
the
output
is
within
the
P
LINE
IN
LINE
OUT
standard value. .
Note:
The
Normal
speed
adjustment
must
be
done
before
_O*T£O
OOCF
the
High
speed
adjustment.
AF
oscillator
Fig. 9
(DECK
A)
Standard
value:
3000
+
15
Hz
[Normal
(X1)],
6000
+
600
Hz
[High
(X2),
only
confirmation)
(DECK
B)
Standard
value:
3000
+
15
Hz
[Normal
(X1)],
6000
+
30
Hz
[High
(X2)]
OVERALL
GAIN
ADJUSTMENT
(DECK
A)
1. Insert the Normal blank test tape (QZZCRA) and set the
unit to the Record pause mode.
2. Apply a reference input signal (1kHz, —24dB).
PLAYBACK GAIN ADJUSTMENT (DECK A/B) Attenuate the output so that its evel bacemes 0.4V.
1. Playback the gain adjusted portion (315Hz, 0dB) of the LINE OUT . Record this input signal. : LINE IN LINE OUT
test tape (QZZCFM). A . Playback the signal recorded in step 3 above, and assure
2. Adjust Deck B= VR3 (L-CH) [[VR4 (R-CH)]] and Deck q that the output is within the standard value.
A=VRS5 (L-CH) [[VR6 (R-CH)]} so that the output is within ‘ Ss . If it is not within the standard value, adjust VR7 (L-CH)
the standard value. and VR& (R-CH).
. Repeat the step 2~5 above until the output is within the
Standard value: 0.4V+0.5dB standard value.
Standard value: 0.4V+0.5dB
PLAYBACK FREQUENCY RESPONSE (DECK A/B)
1. Playback the frequency response portion (315Hz,
12.5kHz~63Hz, —20dB) of the test tape (QZZCFM).
2. Assure that the frequency response is within the range
shown in Fig. 6 for both L-CH and R-CH.
LINE OUT
63Hz 100Hz 200Hz |500Hz 1kHz 2kHz 4kHz
315Hz
Fig. 6

RS-X933 RS-X933
@ TERMINAL FUNCTION OF IC’s
° C901 (M50746-166SP): MICROCOMPUTER
Vec aa Power supply terminal
AVss | * Connected to Vsg
Vaer (ama: aa Standard voltage terminal (5V)
CUE/REV mute signal
e“L” level in muting is off mode.
e“H” level in muting is on mode.
Direction indicator signal of deck A
e“L” level with forward mode.
¢ “OPEN” with reverse mode.
Mater mute control signal
e“L” level in muting is off mode.
e “OPEN” when muting is on mode.
Line out mute signal
Rec. amp. mute signal of deck A
e“L” level in mute is off mode.
e“H” level in mute is on mode.
Line out mute signal (Not used)
e“L” level in muting is off mode.
¢ “OPEN” when muting is on mode.
Connected to GND
Connected to GND
Key switch scan (DECK A: STOP, F.F., REW, F. PLAY, R. PLAY, REC.,
PAUSE, S. START, X2, X1, DOLBY C, B)
KEY 1 Key switch scan (DECK B: STOP, F.F., REW, F. PLAY, R. PLAY)
| i4.sd[) so Ptay2 =«|~——S<O~S——=«S&Ys Deck A Playback LED display/CUE, REV, LED display
| 15 | PLAY? | © _] Deck BPlayback LED display/CUE, REV, LED display
Auto Rec. mute terminal.
“L”=KEY ON, “H”=KEY OFF
Not used.
Deck A Rec. mode LED display
e“L” level in Deck A Rec. mode.
e “H”’ level in other mode.
Deck A Remote control LED display
e“L” level in LED on mode.
e“H” level in LED off mode.
Deck B Remote control LED display
“L” level when LED is on mode.
e “H” level when LED is off mode.
B side select signal to CD player, used during CD synchro editing mode.
Synchro start signal input from CD player
Remote control serial data
Timer rec terminal
Timer play terminal
Primary AC power detection terminal
Connected to Vss
Reset terminal
e“L” level when reset is on mode.
e“L” — “H” level when reset is off mode.
MMT
LMT
Pp) = A Ls)
DMT
REV 1
za D
m m < <
LS) i)
= o
aD
m 3 Le)
—
Ps) m Q ay
2 —
” < z i?)
=) m = s
RCS
4 x D fe) ala m ° m 2 Viv
® Cc o < S\|m
Sj m ig 2/O
<
7) a
7
Clock OSC terminal
Not used, open.
Connected to GND
Test terminal
Power ON/OFF switch input
«“L” level with power ON
e“H” level with power OFF
Deck B Rotation pulse signal of reel table
REEL 1
o
N
pS =
oa
.
a
[wopwision [Function
[1 Beek A Rotation pulse signal of eeitable SSCS
[1 J eck Reverse Rec. nh. switch select terminal
P71 eck Forward Rec. Inh. switch select terminal
[71
J
beck
8
mechanism
mode
switch
select
termnal
Deck B cassette half detection switch
e“L” level in half detection switch is on mode.
e“H” level in half detection switch is off mode.
MPX filter IN/OUT control signal
e “OPEN” with Dolby NR “IN”
e“L” level with Dolby NR “OUT”
Deck A play select signal
e“L” level with PLAY/CUE/REVIEW mode.
e “H” level with any other mode.
X2 Speed LED display
e“L” level when LED is on mode.
e “OPEN” when other mode.
X1 Speed LED display
e“L” level when LED is on mode.
e “OPEN” when other mode.
Connected to GND
Dolby C LED display
e “L’ level when LED is on mode.
e “OPEN” when other mode. (Not used, open.)
Dolby B LED display
e“L” level when LED is on mode.
e “OPEN” when other mode.
Encode/Decode select signal
e“L” level in encode mode.
e“H” level in decode mode.
Deck B reverse mechanism select terminal (Connected to GND)
[0 | Wot used, open
Direction indicator signal of deck B
Deck B Forward Rec. Inh. switch select terminal
Deck B Motor speed control signal
e“L” level when normal speed (X1).
e “H” level when high speed (X2).
Deck B Solenoid control signal
e “H”’ level when solenoid is on mode.
e “L” level when solenoid is off mode.
Deck B Motor control signal
e “HH” level when motor is on mode.
e¢“L” level when motor is off mode.
Deck A mechanism mode switch select terminal
Deck A cassette half detection switch
e“L” level in half detection switch in on mode.
e “H” level in half detection switch in off mode.
Deck A Motor speed control signal
¢ “H” level when normal speed (X71).
e“L” level when high speed (X2).
Deck A Solenoid control signal
eH” level when solenoid is on mode.
e“L” level when solenoid is off mode.
Deck A Motor contro} signal
e “H” level when motor is on mode.
e“L” level when motor is off mode.

10
Mi PRINTED CIRCUIT BOARDS
AC OUTLET
(UNSWITCHED)
Power Source For (EG) area
— eee
Power Source For [E, E5, EB, GC, GN] areas.
PC.B.
ALS
AMPLIFIER {}
[SYNCHRO]
(OUT)
(IN)
[REMOTE CONTROL |
LINE OUT LINE IN
PO
REC
LEVG
»P
(REMOTE CONTROL |
OPERATION
= w
> iu
a
“
w 5 o
coaainentife
-437FVLQ) Re
@
A
se
etennananiaroamaa
sa
Memes,
{coe
ERASE CURRENT ADuJ.
TEST POINT

I
8S-X933
10 11 12 13 14 15 16 17 18 19
Power Source For (EG) area
AC OUTLET
(UNSWITCHED)
AC
IN
A
MAIN
PCB.
[:]
MECHANISM
(DECK
A)
P.C.B.
{ 220V /50/60Hz)
ae
oe
<<
*S,
er transformer)
SOLENOID
MECHANISM (DECK B) P.C.B.
Seni
[p) POWER SWITCH/REC LEVEL PC.B.
REC REVERSE
MODE (TIMER POWER
SOLENOID
PEAK LEVEL
(+6) (+3) (0) {(-5) — (-10)
iE OPERATION SWITCH/ LED METER PCB.
(REC IND.)
(PLAY IND.)
(>
DIRECTION
(REMOTE
CONTROL
IND.)
(
>——
DIRECTION
IND.——<
)
(PLAY
IND.)
IND:
EREMOTE
CONTROL.
IND-)
[p> CUE/REVIEW >» PLAY @ STOP < PLAY 4 CUE/REVIEW
(DECK A}
(Cc) (B)
«PLAY | [# CUE/REVIEW
| E SOLeY NE [e@REC || Ogee HIPAUSE
=
—
18
—

RS-X933. —- RS-X933
Hi
SCHEMATIC
DIAGRAM
1
2
3
4
5
6
7
(Parts list on pages 29~35.)
L¥ main circuit
(This schematic diagram may be modified at any time with
important
for
safety.
When
replacing
any
of
these
R933
4.7K
o1,2
Q901
H
development
of
new
technology.)
2s
GSEORIA
eSCos
Hl
AQSTA.
1439
Q90
1,
bee
—
PLAYBACK
A
TPI2
eo
4
GAIN
ADJ.(Lch,OECK
B)
GAIN
ADJ.
(UL
ch,DECK
A)
Notes:
;
?
a
<>
Re
ST
x30
P20
-5.5V
x
_
*S701:
DECK
B
Stop
switch
in
“off”
position.
ee
ST
ofa
yy
||
(es
SO
Os
re
eee
Pitches
ame
*°S702:
DECK
BF-.F.
switch
in
“off”
position.
23
283
(DA
|
*
2)
tah
om
©
*S703:
DECK
B
Rew.
switch
in
“off”
position.
okt
l.,
as
vee
¢$704:
DECK
B
Playback
switch
in
“off”
position.
-
oe
L
-
ns
°S705:
DECK
B
Rev.
Playback
switch
in
“off”
position.
1
wPy
ge
SSP
Re
S
a
jail
R
sonninn
¢S706:
Reverse
mode
selector
switch
in
“off”
position.
Rch
C=
ae
ov ov
7 Ov ov
¢
S708:
DECK
A
Auto
rec.
mute
switch
in
“off”
position.
$
20m
ae
=,
bef
*S711:
DECKA
Stop
switch
in
“off”
position.
DECK
B
sa
:
E
¢S712:
DECKA
F.F.
switch
in
“off”
position.
B
Ge
ee
oe
¢S713:
DECKA
Rew.
switch
in
“off”
position.
[
inna
PSAs
a
eB
be
|
ic
:
°S714:
DECKA
For.
Playback
switch
in
“off”
position.
PDRYERCIG
HEAD
SwiteninoreLaviowy"
ANT384
|
1c2
e$715:
DECKA
Rev.
Playback
switch
in
“off”
position.
Dee
—
§
¢S716:
DECKA
Record
switch
in
“off”
position.
~
ws
¢$717:
DECKA
Pause
switch
in
“off”
position.
ceeds
(NC
le
eee
ee
ere
rea
|
°S718:
Synchro-start
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