Rotel RX-700L User manual

Quality Uncompromised.
ee
Technical
Manual
THE ROTEL CO. LTP.
QUARTZ PLL SYNTHESIZER
AM/FM STEREO RECEIVER
RX-/OOZL
TABLE OF CONTENTS
Description of Function 2 ok eee Se ee ee ee ee 2
AMONIMEN Cod io a a ee Sh OE SS eS We 3
Troubleshooting Guide. .......0.0. 0... ee ee ee eee 6
Paris (hiSt. fc 64 Gee sos Se Ee We A Re Oe 7
Specifications =... oss. BS wR AS Sr es 9
Chassis Layout (Top View) .......... 00002 ee eae 10
BIGCK: Diagrannte. esc: 4 Soccer: oe ewe Gea eer Ke eS 10
Circuit Board: Disgranse «0606. 8 6 4. BABS 6 Se oe GOA eS 11
Schematic Diagram = 2.6 2 6.8 o Dera WR ae a Bw ow ee ews 13
TABLE DES MATIERES
Description des fonctions ........0. 200 pee eee eee 2
PUIGMEMENE :6: Aicd Shi Gi eee Se ee WG eee a we Be ew 3
Guide de dépannage ..........0 0. eee eee eee ae 6
PISte CO°DIOCES so ca 5 oe gx wb d Soe eed Se oe ee 7
CaracteriStiQues: 2.10 ce ws dab bed, SS We wa BS aR OO 9
Installation du chassis (vue de dessus) ...........00.. 10
Schémasynoptique. ....... 2.0. eee ee es 10
Diagrammes des plaquettes des circuits imprimés. ....... 11
Diagramme schématique........... 02 e ee ene es erm |
Serial Nos. Beginning
NE16261
1-36-8 OHOKAY AMA, MEGURO-KU, TOKYO 152, JAPAN
2ND FLOOR, EVERGLORY BLDG., NO. 305, SECTION 3
ROTEL ELECTRONICS CO.,, LTD. Nanking €’ ROAD, TAIPEI, TAIWAN, REPUBLIC OF CHINA
ROTELW OF AMERICA, INC.
ROTTEN HIF! LIMITED.
13528 SO. NORMANDIE, GARDENA, CALIF. 90249, U.S.A.
2-4 ERICA ROAD, STACEY BUSHES, MILTON KEYNES,
BUCKINGHAMSHIRE, ENGLAND

DESCRIPTION OF FUNCTION
1. Memory
a) Preset stations: 5 FM stations plus 5 AM (LW/MW)
stations (10 stations in total).
b) Last channel: 1 station for each band.
2. Memory backup: Battery backup method (about
one year).
3. Automatic tuning is possible only for FM band.
4. Receiving frequency ranges, etc. are shown in the
DESCRIPTION DES FONCTIONS
1. Mémoire
a} Stations préréglées: 5 stations MF et 5 stations MA
(GO/OM) (10 stations au
total)
b) Dernier canal: 1 station dans chaque gamme.
2. Renfort de mémoire: Piles d
e secours (environ un an).
3.
L’accord
par
auto-exploration
n‘est
possible
que
dans
la gamme MF.
4.
Les
gammes
de
fréquences
recues,
etc,
sont
indi-
table below. Table 1 Tableau 1 queées au tableau ci-aprés.
Area
Band
Frequency
Range
Channel
Space
ae
IF
Région
Gamme
Fréquence
|
shai
:
stall
FI
Mw
530kHz
—
1620kHz
10kHz
10kHz
A50kHz
USA
(
MW2
522kHz
—
1611kHz
9kHz
—
QOkHz
450kHz
)
FM
87.9MHz
—
107.9MHz
200kHz
25kHz
10.70MHz
MW
522kHz
—
1611kHz
9kHz
|
kHz
450kHz
Europe,
UK,
etc.’
LW
146kHz
—
353kHz
9kHz
1kHz
|
450kHz
FM
87.50MHz
—
108.0MHz
50kHz
25kHz
10.70MHz
Note:
Units
for
the
U.S.A.
are
preset
for
MW1
(channel
space
=
10kHz).
9.
The
following
tables
show
frequency
ranges,
etc.
for
respective
areas,
which
are
preset
by
opening
or
closing
certain
part
of
controller
circuit
or
tuner
circuit.
Table 2 a) Presetting FM and MW Bands
USA
EUROPE
UK
Notes:
Note: Les appareils pour les U.S.A. sont préréglés en MW1
(OM1)
(intervalle
entre
canaux
=
10kHz).
©.
Les
tableaux
suivants
indiquent
les
gammes
de
fré-
quence,
etc,
selon
les
zones
respectives,
qui
font
l'objet
d’un
réglage
par
ouverture
ou
fermeture
de
certaines sections du circu
circuit de section tuner.
Frequency Range Chan
it de commande ou du
Tableau 2 a) Préréglages dans les gammes MF et OM
nel Space
CLOSED
| 87.50MHz—108.00MHz
1. FM band is preset by combining *7 and *8 (it cannot be
preset when *7 and *8 are closed).
2. MW (*9) can be preset independent of FM band.
3.
If
settings
for
*7,
*8
and
*9
are
changed
while
the
unit
is
operating,
PLL
data
and
display
do
not
change.
It
is
therefore
necessary
to
put
the
unit
in
the
standby
state
beforehand.
b
b
— 3°“
Presetting
FM
Muting
(Auto-stop)
Lock
Range
Préréglage
de
la
gamme
de
verrouillage
(arrét
auto-
matique)
de
silencieux
MF
Area
Lock
Range
*
1
Zone
Gamme
de
|
verrouillage
USA
CLOSED
CLOSED
+70kHz
EUROPE
CLOSED
OPEN
+30kHz
UK
Table 3. Tableau 3
CLOSED
§22kHz—1611kHz
Notes:
1. La gamme MF est préréglée en
réglage ne peut étre opéré lorsque *7 et *8 sont fermés).
2. La gamme OM (*9) peut étre préréglée indépendamment de
la gamme MF.
Lorsque les réglages de *7, *8 et *9 sont modifiés alors que
l‘appareil est en marche, les do
Espacement des
Gamme de frequences
canaux
87.9MH2—107.9MHz 200kHz
530kH2z—1620kHz 10kHz
50kHz
9kHz
combinant *7 et *8 (le pré-
nnées PLL et l'affichage ne
changent pas. II est donc nécessaire de mettre l'appareil en
mode d’attante au préalable.
c) Presetting FM De-emphasis
c) Préréglage de désaccentuatio
n MF
*3
De-emphasis
Zone
Désaccentuation
75us
USA CLOSED
EUROPE
OPEN
5Ous
UK
|
|
Table 4 Tableau 4

Alignment
Instruments: FM signal generator, FM stereo signal gene-
rator, AM signal generator, oscilloscope, HD analyzer,
DC digital voltmeter, AC voltmeter, zero-center meter
@ Adjustment should be made in the following order.
1) FM 2) MW 3) LW
FM ALIGNMENT
A. VCO Adjustment
1. Connect the DC voltmeter to kinky pin on the FM
OSC section and chassis ground. Operate the scanning
button to display the lower edge frequency*! on the
frequency display. Then adjust FM OSC coil L106 so
that the DC voltmeter reads 3V+0.5V.
2. Then display the higher edge frequency*?, and adjust
the trimmer capacitor CT104 so that the DC volt-
meter reads 19V+0.1V.
3. Repeat steps 1 and 2 until no further improvement is
noticed.
Note: *!, **: Band edge varies according to area, as
shown in the table.
Table 5 Tableau 5
lower Edge | Higher Edge
Channel Space
Limite infé- | Limité supé- Espacement
rieure ' rieure des canaux
87.50MHz 108.00MHz 50kHz
EUROPE, UK
107.9MHz 200kHz
B. FMRF Sensitivity Adjustment
1. Receive SOMHz (90.1MHz, channel space = 200 kHz)
signal from the FM signal generator. Adjust the FM
RF coils £101, L102 and L103 to obtain maximum
sensitivity.
2. Next, receive 105MHz(105.1MHz, channel space = 200
kHz) signal from the FM signal generator. Adjust RF
trimmer capacitors CT101, CT102 and CT103 to
obtain maximum sensitivity.
3. Repeat steps 1 and 2 until no further improvement is
noticed.
4. Receive 9OMHz (90.1MHz) signal from FM signal gen-
erator. Antenna input should be set to the optimal lev-
el where adjustment can be carried out satisfactorily
with the appropriate amount of noise contained in
the signal wave (2uV). Adjust FM IFT L105 so that
the waveform is largest and contains noise uniformly
on the top and bottom of the waveform. (See Fig. 1)
Note: Although two resonating points are available,
be sure to adjust at the lower point.
TUNER PCB (PORTION )
Fig. 1
Alignement
Instruments: Genérateur de signaux MF, générateur de
signaux stereophonique MF, générateur de signaux MA,
oscilloscope, analyseur a distorsion non-linéaire, volt-
metre CC (digital), voltmétre CA, compteur a centrage
zero
@ Le reglage doit étre effectué dans !’ordre suivant.
TMF: 2) PO <3)'°GO
ALIGNEMENT MF
A. Reglage du VCO (oscillateur commandé par varia-
tion de tension)
1. Brancher le voltmétre CC sur la broche nouée sur la
section OSC MF et la masse du chassis.
Tourner le bouton d’accord afin d’afficher la fré-
quence de limite inférieure*! sur l'atfichage de fré-
quence. Ajuster la bobine OSC MF L106 de facon a
ce que le voltmétre affiche la valeur 3V+0,5V.
2. Afficher ensuite la fréquence de limite supérieure*?
sur l'afficharge de fréquence et ajuster le capaciteur
trimer CT104 de facon a ce que le voltmétre CC
affiche 19V+0,1V.
3. Repéter les opérations des points 1 et 2 jusqu’a ce
qu‘il ne soit plus noté d’amélioration du fait du ré-
glage.
Nota: *’, *?: La limite de bande varie selon la région,
comme indiqué sur le tableau 5.
B. Réglage de sensibilite HF MF
1. Appliquer un signal 9OMHz (90,1MHz, espacement
des canaux: 200kHz) a Il’aide du générateur de
signaux MF. Ajuster les bobines RF L101, L102 et
L103 sur l’avant afin d’obtenir une sensibilité maxi-
mum.
2. Appliquer ensuite un signal 105MHz (105,1MHz,
espacement des canaux: 200kHz) a l'aide du geé-
nérateur de signaux MF. Ajuster les capaciteurs trimer
RF C1101, C1102 et CT103 sur l’avant afin d‘ob-
tenir une sensibilite maximum.
3. Répeter les operations des points 1 et 2 jusqu’a ce
qu'il ne soit plus noté d’amélioration du fait du
réglage.
4. Récevoir le signal de 9OMHz (90,1MHz) du généra-
teur de signaux MF. L'entrée de l’antenne doit 6tre
reglée au niveau optimal ou le réglage peut étre mis a
exécution d’une maniére satisfaisante avec la quantité
appropriee de bruit contenue dans |’onde de signal
(2yuV).
Régler FM IFT L105 de sorte que la forme d’onde
soit plus grande et contienne le bruit uniformément
sur le sommet et le fond de la forme d’onde. (Fig. 1)
Note: Deux points de résonance sont prévus; opérer
le réglage sur Je point inférieur.

C.
1,
Discriminator Adjustment
Connect the zero-center meter to test points TP24
and TP25.
Connect the oscilloscope and HD analyzer to TAPE
OUT jack.
. Receive 9OMHz (90.1MHz) (1mV) signal from FM
signal generator. Adjust the bottom core of L117 so
that the zero-center meter falls on mid-position.
. Next adjust the top core of L117 to minimize distor-
tion.
. Repeat steps 2 and 3 until no further improvement
is noticed. (Fig. 2)
FM Muting Level Adjustment
Receive 9OMHz (90.1MHz) (2 to 5uV) from the FM
signal generator. Verify that the output disappears
when the muting switch is set to ON. Then increase
the
antenna
input
level
to
20uV
and
adjust
the
potentiometer VR101 so that the output just ap-
pears. Reduce the antenna input level once, and
gradually increase it up to 20uV, at which level the
signal output should appear (Fig. 2).
ZERO CENTER METER
¢.
(PORTION) Fig. 2
2
TUNER PCB
FM STEREO ADJUSTMENT
L
Zz
Connect the oscilloscope and AC voltmeter to R-ch
output jack,
Receive stereo signal from FM stereo signal generator
(antenna input level set to ImV).
PIOC LONE ce ha ts. we's erate aot oe ae alk 9% mod.
Audio signal 1,.000Hz L-ch only. ...... 90% mod.
Turn potentiometer VR102 to the mid-position of
the range where the stereo indicator lights up.
. Adjust potentiometer VR103 to minimize leakage of
signal from L-ch into R-ch.
. Next, connect the oscilloscope and AC voltmeter to
L-ch output jack, and switch the modulation of the
FM stereo signal generator to R-ch signal. Check to
make sure leakage of signal from R-ch into L-ch is
almost the same as that from L-ch into R-ch.
If there is a marked difference, fine-adjust VR103.
(Fig. 3)
B
¥R102
CI
ae VR1I03
JeeriNG POINT
TUNER PCB (PORTION)
Fig. 3
C.
]. Brancher le compteur a@ zéro central sur les points
Reglage du discriminateur
d‘epreuve TP24 et TP25.
Brancher l'oscilloscope et |’analyseur a distorsion
non-linéaire au jack TAPE OUT.
. Recevoir un signal de 9OMHz (90,1MHz) (ImV) en
provenance du générateur de signaux MF.
Ajuster le noyau inférieur de L117 jusqu’a ce que
le compteur a zero central affiche une valeur en posi-
tion moyenne.
. Ajuster ensuite le noyau supérieur de L117 de facon a
obtenir une distorsion minimum.
. Repéter les opérations des points 2 et 3 jusqu’a ce
qu'il ne soit plus observé d’amélioration. (Fig. 2)
Reéglage du niveau d’amortissement MF
Appliquer un signal 9OMHz (90,1MHz) (2 a 5uV) a
‘aide du générateur de signaux MF. Vérifier que la
sortie disparait lorsque le commutateur d’amortisse-
ment est amené sur la position ON. Augmenter
ensuite le niveau d’entrée sur antenne a 20nV et
ajuster le potentiométre VR101 de facon a ce que la
sortie apparatsse tout juste. Réduire rapidement le
niveau d’entrée sur l’antenne et l’augmenter progres-
sivement jusqu’a 20uV, niveau auquel la sortie du
signal doit alors apparaitre. (Fig. 2)
REGLAGE STEREOPHONIQUE MF
if
Zz
Brancher |l’oscilloscope et le voltmétre a courant alter-
natif au jack de sortie du canal droit.
Recevoir le signal stereéophonique du générateur de
signal stéreophonique MF (niveau d’entrée de
I'antenne placé a 1mV).
Signal d’‘identification
Signal audio 1.000Hz (canal gauche seul)... . . 90%
Tourner le potentiometre VR102 a la position
moyenne de |’étendue out l'indicateur stéréo_ s’ijl-
lumine,
Régler le potentiométre VR103 pour minimiser la
fuite du signal du canal gauche au canal droit.
. Ensuite, brancher |l’oscilloscope et le voltmétre a
courant alternatif au jack de sortie du canal droit, et
commuter la modulation du générateur de signal!
stéréophonique MF au signal de canal droit. Vérifier
que la fuite du signal du canal droit au canal gauche
est presque la méme que celle du canal gauche au
canal droit. S‘il y a une différence remarquée, régler
finement le VR103 (Fig. 3).

AM ALIGNMENT
A.
il:
nh
. Then display the higher edge frequency *
IF and MW Adjustment
Connect the oscilloscope and AC voltmeter to the
output terminal. Feed 450kHz signal from the AM
signal generator to pin 4.
Adjust AM IFT, £112, L113 and L114 to obtain
maximum output.
. Connect the DC voltmeter to test pin 5 and chassis
ground.
Operate the scanning button to display the lower
edge frequency*’ on the frequency display. Then
adjust MW OSC coil L109 so that the DC voltmeter
reads 1V+0.1V.
2 and adjust
the trimmer capacitor CT105 so that the DC volt-
meter reads 9VtO0.5V.
. Repeat steps 2 and 3 until no further improvement
is noticed,
Note: *', **: Band edge varies according to channel!
space, as shown in the table 1, page 2.
. Receive 648kHz (650kHz, channel space = 10kHz)
signal from the AM signal generator, adjust the MW
coil of AM antenna LOO1 on the rear panel to obtain
maximum sensitivity.
. Next, receive 1,395kHz (1,400kHz, channel space =
10kHz) signal from the AM signal generator, and
adjust the trimmer capacitor CT301 to obtain maxi-
mum sensitivity.
. Repeat steps 5 and 6 until no further improvement
is noticed.
LW Adjustment (3-band models only)
. Connect the DC voltmeter to test pin 5 and chassis
ground.
Operate the scanning button to display the lower
edge frequency (146kHz) on the frequency display.
Then adjust LW OSC coil L111 so that the DC
voltmeter reads 1V+0.1V.
. Then display the higher edge frequency (353kHz),
and adjust the trimmer capacitor CT106 so that the
DC voltmeter reads 7.5V+0:5V.
. Repeat steps 1 and 2 until no further improvement is
noticed.
. Receive 164kHz signal from the AM signal generator,
adjust the (LW) coil of AM antenna LOOQ1 on the rear
panel to obtain maximum sensitivity.
. Next, receive 317kHz signal from the AM signal
generator, and adjust the trimmer capacitor CT302
to obtain maximum sensitivity.
. Repeat steps 4 and 5 until no further improvement
is noticed. (Fig. 4)
DC VOLTMETER
4
L109
ls
cT1i0os &@
AM ANT COIL
L001
a
LW
L001
CHASSIS TOP VIEW ( AM PORTION}
@PORTION INSIDE C777 1S NOT USED ON
2~BAND MODELS.
2-BAND 3-BAND
ONLY ONLY
ALIGNEMENT MA
A. Alignement Fi et OM
i.
. Afficher ensuite la fréquence de limite supérieure
. Appliquer
Brancher |’oscilloscope et fe voltmétre CA sur la
borne de sortie. Appliquer un signal 450kHz a l'aide
du générateur de signaux MA sur la broche 4.
Ajuster 'AM IFT, L112, L113 et L114 de facon a
obtenir une sortie maximum.
. Brancher le voltmétre CC sur la broche 5 et Ja masse
du chassis.
Tourner le bouton d’accord afin d’afficher la fré-
quence de limite inférieure*! sur |'affichage de fré-
quence. Ajuster la bobine OSC OM L109 de facon a
ce que le voltmétre affiche la valeur 1V+0,1V.
x2
sur l’afficharge de fréquence et ajuster le capaciteur
trimer CT105 de facon a ce que le voltmétre CC
affiche 9V+0.5V.
. Répeter les opérations des points 2 et 3 jusqu’a ce
qu'il ne soit plus noté d’amélioration du fait du ré-
glage.
Nota: *!, *?: La limite de bande varie selon l’espace-
ment des canaux, comme indiqué sur je tableau 7,
page 2.
. Appliquer un signal 648kHz (G50kHz, espacement
des canaux: 10kHz) a l'aide du générateur de signaux
MA et ajuster la bobine OM d’antenne MA LOO1 sur
le panneau arriére de facon a obtenir une sensibilite
maximum,
ensuite un signal 1395kHz {(1400kHz,
espacement des canaux = 10kHz) a l’aide du généra-
teur de signaux MA et ajuster le capaciteur trimer
CT301 de facon a obtenir la sensibilité maximum.
. Répeter les opérations des points 5 et 6 jusqu’a ce
qu'il ne soit plus noté d’amélioration du fait du
reglage.
Réglage GO (pour modéle 3 gammes uniquement)
. Brancher le voltmetre CC sur la broche 5 et la masse
du chassis.
Tourner je bouton d’accord afin d’afficher la fré-
quence de limite inférieure (146kHz) sur l'affichage
de fréquence. Ajuster la bobine OSC GO L111 de
facon a ce que le voltmetre affiche la valeur 1V+0,1V.
. Afficher ensuite la fréquence de limite supérieure
(353kHz) sur l’afficharge de fréquence et ajuster le
capaciteur trimer CT106 de facon a ce que le volt-
metre CC affiche 7,5V+0,5V.
. Répéter les opérations des points 1 et 2 jusqu’a ce
qu'il ne soit plus noté d’amélioration du fait du ré-
glage.
. Appliquer un signal 164kHz a l'aide du générateur
de signaux MA et ajuster la bobine (GO) d’antenne
MA LOO1 sur le panneau arriére de facon a obtenir
une sensibilité maximum.
Appliquer ensuite un signal 317kHz a l'aide du géné-
rateur de signaux MA et ajuster le capaciteur trimer
CT302 de facon a obtenir la sensibilité maximum.
Répéter les opérations des points 4 et 5 jusqu’a ce
qu'il ne soit plus noté d’amélioration du fait du
réglage. (Fig. 4)
a Si EL Op a oR a a eT Oe ay ae i
aah a rl er i iar al i ca i ae ae al

Troubleshooting Guide
FM SECTION
1. Poor S/N ratio
a) Large ripple is contained in the +B circuit (ripples
with 20uV or less is negligeble).
b) LPF constant in the control circuit is improper.
c) 1C202 is faulty.
Note:
Improper
routing
of
wire,
etc.
affects
S/N
ratio,
2. Poor sensitivity (white noise is intefered)
a) IC201 is faulty.
b) Adjustment incorrect.
AM MW (LW) SECTION
1, 1.0V adjustment cannot be made at the lower edge
frequency.
a) OSC coil L109 (L111) is faulty.
2. 20V adjustment cannot be carried out at the higher
edge frequency.
a) OSC trimmer CT105 (CT106) is faulty.
3. Tracking error is too large.
a) Varicap diode at OSC side and that at ANT side
do not match each other in characteistics. (A set
of varicap diodes (two) should be replaced at a
time. Never replace each of them separately.)
b) Band edge voltage is not correctly preset (See a)).
c) Varicap diode is faulty (See a)).
d) Bar antenna coil is faulty.
CONTROLLER SECTION
1. Auto-stop does not work
a) Check if scanning stops automatically the instant
the Pin 17 of the Tuner p-c board is shorted to
the chassis after pressing Up or Down button with
the Manual/Auto switch set at Auto.
The control circuit is normal if scanning stops.
2. Unrelated segments of the frequency dimly glows.
a) Zener diode D229 is faulty.
3. The frequency display cannot be tuned in.
a) CPU program of the controller is out of order.
Unplug the power cord to reset and plug in again.
4, After Up/Down button is pressed while the Standby
switch is turned off, the last channel is replaced by
the new frequency, when power is turned on.
a) Lock circuit is faulty.
&. When the power cord is unplugged and plugged in
again, the last channel is not maintained.
a) Memory back-up circuit is faulty.
6. Waveform for FM does not appear on CRT.
a) Prescaler 1C201 and its related circuit is faulty.
b) FM OSC circuit is faulty.
c) FM LPF circuit is faulty.
d) IC202 faulty.
Guide de dépannage
SECTION MF
1.
Rapport S/B défectueux
a)
D’importantes
ondulations
sorit
présentes
dans
le
circuit
+B
(les
ondulations
de
20uV
ou
moins
sont
négligeables).
|
b)
La
constante
LPF
dans
le
circuit
de
commande
est
incorrecte.
c) Le circuit 1C202 est défaillant.
Nota:
Un
montage
incorrect
de
cables,
etc,
affecte
le
rapport S/B.
.
Faible
sensibilité
(bruit
blanc
avec
interférence)
a) Circuit 1C201 défaillant.
b) Reglage incorrect.
SECTION MA GO (OM)
i
Le
reglage
1,0V
ne
peut
étre
effectué
sur
la
fré-
quence
de
limite
inférieure.
a)
La
bobine
OSC
L109
(L111)
est
défaillant.
.
Le
réglage
20V
ne
peut
@tre
effectué
sur
la
fré-
quence de limite supérieure.
a)
Le
trimer
OSC
CT105
(CT106)
est
défaillant.
"erreur d’exploration est trop importante.
a)
Les
caractéristiques
des
varactors
cOté
OSC
et
cote
ANT
ne
sont
pas
appariées.
(Les
varactors
doivent
étre
remplacés
par
jeu (de
deux
piéces),
Ne
jamais
remplacer
|’un
sans
remplacer
|’autre.)
b)
La
tension
limite
de
bande
n'est
pas
correctement
réglée.
(Voir
a).)
c) Le varactor est défaillant (voir a)).
d) La bobine de I’antenne barre est défaillante.
SECTION CONTROLEUR
1.
L‘arrét automatique n‘opére pas
a)
Verifier
que
|’exploration
s’arréte
automatique-
ment
lorsque
la
broche
17
de
la
plaquette
de
circuit
imprimé
du
tuner
est
court-circuitée
avec
le
chassis,
apres
avoir
exercé
une
pression
sur
la
touche
Up
ou
Down,
le
sélecteur
Manual/Auto
se
trouvant
en
position
Auto.
Le
circuit
de
com-
mande
est
normal
si
l’exploration
s’arréte.
Les
autres
segments
de
|’affichage
de
fréquence
s’al-
lument faiblement.
a) La diode Zener D229 est défaillante.
.
L’affichage
de
fréquence
ne
peut
étre
obtenu.
a)
Le
programme
CPU
de
contrdleur
est
défaillant.
Débrancher
le
cordon
d'‘alimentation
pour
le
réar-
mer
et
rebrancher
le
cordon.
.
Apres
pression
sur
la
touche
haut/bas
lorsque
le
com-
mutateur
STANDBY
est
en
position
d’arrét,
le
der-
nier
canal
recu
est
remplacé
par
une
nouvelle
fréquence
lorsque
le
tuner
est
remis
sous
tension.
a) Le circuit de verrouillage est défaillant.
.
Lorsque
le
cordon
d’alimentation
est
débranché
DUIS
rebranche,
le
dernier
canal
recu
n’est
pas
maintenu.
a)
Le
circuit
de
renfort
de
la
mémoire
est
défaillant.
.
La
forme
d’onde
pour
MF
n’apparait
pas
sur
I’écran
du tube cathodique (CRT).
a)
Le
précompteur
1C201
et
le
curcuit
associé
sont
defaillants.
b) Le circuit de OSC MF est défaillant.
c) Le circuit de MF LPF est défaillant.
d) 1C202 est défaillant.

Parts List
Schematic
Location
Liste des piéces
Description Part. No.
TRANSISTORS, DIODES AND IC’S
Q101
Q102, 103
0.104
Q105, 113, 114
119, 120, 201
202 to 208
216 to 220
305
Q106, 107, 109
110, 112, 301
Q108
Q115 to 118
127 to 124
214, 215, 221*?
222*' , 301, 302
303, 304, 601
602, 904, 905
Q209 to 213
501 to 504
Q901
Q902
C903
D101 to 104
Di05, 106**, 301
D107, 108, 109
113, 219
D110, 111,112
114 to 120
201 to 216
218, 220, 221
222 to 228
230*) to 235*!
236, 237, 301
D217
D229
D901
D902
D903
D904
DS05
D906
D907
D908, 909
D001 to 003
005, 006
D004, 007, 008
009*?, 010*?
IC 101
IC102
C201
IC202
IC203, 204*?
C401
IC601
cO
L101
L102
L103
L104
L105
L106
L107, 108, 115
201, 901, 902
3SK45R (B) 302001128
2SC 1674 (K), (L) 301201163
2SK168 (F) 302001122
2SAGO8NP (F, G}, or 301001185
2SA564 (R, S) 301001146
2SC930NP (E), or 301201229
2SC829C 301201117
2SK49 (F, H) 302001112
2SC536NP (F, G), or 301201 234
2SC828 (R, S), or 301201115
2SC1815 (GR) 301201244
2SC1570 (G, H), or 301201242
28C2634 (S, T) 301201222
2SC1826 (Q, Y) 301201169
2SC2362 (G, H), or 301201241
28C1980 (S, T) 301201171
2SC2274 (E, F), or 301201231
2801318 (S, T) 301201248
2VC211, Vari-cap, FM 300616106
SV321, Vari-cap, AM 300616105
1K 188, (Ge) 300111008
MA150, (Si) 300111016
WZ-162, Zener, 16.2V,0.5W 300313017
WZ-067, Zener, 6.7V,0.5W 300313036
WZ-140, Zener, 14V, O.5SW 300313018
WZ-063, Zener, 6.3V,0.5W 300313038
WZ-240, Zener, 24V, O.5W 300313025
WZ-210, Zener, 21V, O.5W 300313016
WZ-050, Zener, 5V, O.5W 300313028
WZ-150, Zener, 15V, O.5W 300313027
SR1K-4, Rectifier 300919024
KBP-O2, Rectifier 300919027
GL-9PR24, LED, (Red) 300414048
GL-9NG24, LED, (GRN) 300414047
LA1231N, FM IF, DET 303452199
HA-1196, FM MPX DEC 303452165
uUPB533AC, FM Prescaler 303452260
uPD1703C-16, PLL Synthesizer
and Controller 303452274
uPD4011BC 303452276
NJM387DA, Phono Amp 303452263
S!I-1735HDF, Power Amp 303452248
ILS AND TRANSFORMERS
FM ANT Coil 226501199
FM RF Coil 226501 200
FM RF Coil 226501201
Choke, 2.2uH 226501133
FM IFT, ist 225501131
FM OSC Coil 226501202
Choke, 47H 226501123
Schematic
Location
L109
L110**
L111
L112
L113
L114
L116
L117
L118
L601, 602
L001
TO01
VR101
VR102
VR103
VR501
VR502
VR503, 504
$1, 2
$3, 4
S5 to 10 (1 set)
S11
$12
5821 to 828
CT101 to 103
CT104
CT105, 301
CT106*",, 302**
X101, 102
X103
X201
R247
R248
R249
C001
F901**
F902, 903
FOO1, 002
Description
AM (MW) OSC Coil
LW LPF
AM (LW) OSC Coil
AM IFT, 1st
AM IFT, 2na
AM IFT, 3rd
Quadrature Coil, 18uH
FM tFT, Det
MPX LPF
Anti-parasitic Coil
AM (MW) Antenna Coil Ass‘y*?
AM (MW/LW) Antenna Coil
Ass‘y*!
Power Transformer, ‘’G-type’
Power Transformer, ‘‘D-type”’
‘
VARIABLE RESISTORS
50KB, Muting Level Adj
1OKB, MPX VCO Adj
100KB, Separation Adj
100KB, Volume Control
250KW, Balance Control
50KB, Tone Control
SWITCHES
Push 2-key, Speakers
Push 2-key, Mode, etc.
Push 5-key*?,, Function, etc.
Push 6-key*?, Function, etc.
Push 1 key, Loudness
Push 1 key, Power
Touch, Station Memory, etc.
TRIMMER CAPACITORS
CTY121B, 7pF max,
FM RF Adj
CTZ51C117, 10pF Max,
FM OSC Adj
AT1-53W, 16pF Max,
AM (MW) Adj
AT1-58W, 24pF Max,
AM (LW) Adj
OTHERS
10.7MHz BPF (RED)
450kHz BPF
X'‘tal Resonator, 4.5MHz
Thick Film Resistor
Network, RA8-333-4K
Thick Film Resistor
Network, RA8-104-7K
Thick Film Resistor
Network, RA8-104-5K
Noise Canceller
NSK-135 for 120V Spec
PME265MB522 for 220/240
Spec
Fuse, 3A, Primary
Fuse, 4.5A, Secondary,
120V Spec
Fuse, T4A, 220/240V Spec
Fuse, 3.5A, Speaker,
120V Spec
Fuse, 3.15A, 220/240V Spec
Fl-Tube, Frequency Display
Part. No.
223301140
228641120
223301141
225301125
225301126
225301127
226501147
225501136
228641214
228641105
222391148
222391164
207001528
204001528
510502191
510502186
510502197
§25121152
515121130
525101181
614020458
614020452
614051027
614061218
614010162
614010165
615212297
490110125
490110124
490110117
490110115
229101171
229101208
224110006
594333043
594104073
594104053
470101118
470101136
341222300
341222450
345952400
341222350
345252315
360201113
Tuner and Preamp P-c Board Ass’y,
2-band, U.S.A. Spec
2-band, Euro/UK Spec
141010218
141010219

Schematic
Location
otes:
Description
3-band, Euro/UK Spec
Main Amp and Power Supply
P-c Board Ass’y
Part. No.
141010220
120V Spec 141610353
220/240V Spec 141610354
3-band Spec 141610355
Pin
Jack,
6P
624302206
LED Socket w/Wire,
L=460, (BRN} 648211301
LED Socket w/Wire,
L=460, (RED) 648211302
LED Socket w/Wire,
L=460, (ORG) 648211303
LED Socket w/Wire,
L=460, (YLW) 648211304
LED Socket w/Wire,
L=150, (BRN) 548211274
LED Socket w/Wire,
L=150, (RED) 648211275
LED Socket w/Wire,
L=150, (GRN) 648211278
LED Socket w/Wire,
L=300, (WHT) 648211300
Antenna Terminal Ass‘y for
2-band 649201128
Antenna Terminal Ass’y for
3-band 649201129
Speaker Terminal, 8P 649201123
Phone Jack 626110033
DIN Socket, 10P 625001123
Speaker Adaptor** 625001120
Battery Holder 648211262
Battery Snap, Type 1, L=250 628111191
Voltage Selector ** 648211247
Fuse Holder, w/Cover
for 120V Spec 648211157
for 220/240V Spec 648211162
Fuse Clip, ¢6.3 648211257
Fuse
Clip,
66.2
648211256
LED Holder, (9-3) 114902352
Rubber Bush 672200881
Cord Stopper, for STD 675201114
Cord Stopper, for LIK 675201116
Plug, AC, UK Only 628111204
Filter, Fl-tube 114902313
Cover, Power Switch *® 792011219
Cover, Voltage Selector*® 792011218
Cover, Noise Canceller*® 792011220
Power Supply Cord, STD 796301115
Power Supply Cord, Europe 796301148
Power Supply Cord, UK 796301138
res |
‘nen
replacing
vari-cap
diodes
used
in
the
high
frequency
cir-
iit,
be
sure
to
use
ones
of
the
same
set,
in
the
same
lot
(pack),
»
match
the
component's
characteristics.
poenatic
Description
Part.
No.
Location
Front
Panel
Ass’y
for 2-band Mode! 1171911575
for 3-band model 111911576
Top Cover 138011324
Knob, Volume Control 116310351
Knob, Balance, Tone Contro! 116310304
Button,
Function,
Power,
etc.
116210092
Button,
Tuning
(UP/DOWN)
116210107
Button,
Loudness,
Speaker,
etc.
116210104
Button,
Station
Memory
116210108
Owner’s Manual! 833201414
Polyethylene
Bag,
for
Manual
855002332
Polyethylene
Bag,
Set
855004867
Indoor
FM
Antenna,
T-type
791001125
Stylofoam Moulding 815001264
Packing
Case,
R
X-700
812001455
Packing
Case,
RX-700L
812001456
Screw,
M3
x
4
(Ni),
Bind
705213004
Screw,
M3
x
6
(Ni),
Bind
705213006
Screw,
M3
x
8
(BLZ),
Bind
705223008
Screw, M3 x 12 (Ni}, Bind 705213012
Screw,
M3
x
15
(Ni),
Bind
705213015
Screw, M3 x 6 (Ni}, Oval-
countersunk 702213006
screw, M4 x 8 (BLZ), w/FW,
Bind 755224008
Screw,
TP3
x
8
(Ni)
726213008
Screw, TP3 x 8 (BLZ) 726223008
Screw, TP3 x 8 (Ni}, Oval-
countersunk 722213008
Screw, TP3 x 10 (Ni) 726213010
Screw, TP3 x 10 (BLZ) 726223010
Screw,
TPT2.6
x
6
(BLZ),
Bind
765222606
Screw, TPT4 x 10 (Ni), Bind 765214010
Screw, TPT4 x 12(BLZ), Bind 765224012
Nut, M3, Square 770911144
Nut,
M4,
Hexagonal
770402202
Nut,
M7,
Hexagonal
770402205
Nut,
M12,
Hexagonal
770402209
Inserter,
M3,
L=12
770911268
Insulation Collar, M3 992001111
GND
Terminal
770911282
FW,
M3
770500003
FW,
M7
770500006
SSW,
M3
770500010
SSW,
M4
770500011
*1: 3-band model only.
*2: 2-band model only.
*3: Not used on 220/240V spec. models.
*4: OVS spec. only.
*5: Not used on CSA spec. models.
*6: Not used on 120V spec. models.
Notes:
Lors
du
remplacement
des
varactors
utilisés
dans
le
circuit
haute
fréquence,
veiller
a
utiliser
des
pieces
du
méme
jeu
et
du
méme
lot
(embailage)
de
facon
a
respecter
les
Caractéristiques
SVC-211 for FM ....... A set of 4
SVC-321 for AM:
(LW+MW) 200... A set of 3
WWW se is ects we swig ca Soe A set of 2
ambining
components
taken
from
different
lots
(packs)
will
sult in unsatisfactory performance.
vis
Means
that
if
only
one
of
vari-cap
diodes
becomes
faulty
on
ve
circuit,
all
vari-cap
diodes
on
the
same
circuit
must
be
replaced
ith
new
ones
from
the
same
jot
(pack).
ve
vari-cap
diodes
are
supplied
in
multiple
of
2
or
3,
in
a
pack.
2ver
attempt
to
intermingle
components
from
different
packs
en
if
there
arises
overs
or
shorts
in
a
pack.
des organes.
SVC-211 pourMF ...... A jeu de 4
SVC-321 pour MA:
(GO't OM) g....6 0-55-40 A jeu de 3
COW sn aonse cst Ae He acting ot A jeu de 2
La
combinaison
de
piéces
provenant
de
lots
(emballages)
dif-
férents
provoquent
des
défaillance
de
fonctionnement.
Cela
signifie
que
lorsqu’un
varactor
d‘un
circuit
est
défectueux,
tous
les
varactors
de
ce
circuit
doivent
étre
remplacés
par
des
piéces
provenant
du
méme
lot
(emballage).
Les
varactors
sont
fournis
par
multiples
de
2
ou
3
par
emballage.
Ne
pas
mélanger
des
piéces
de
différents
emballages,
méme
dans
le
cas
de
manque
ou
de
surplus
restant,.

neem htt MASIEBIR GALE a ttabalt earttlns eatin crete ce ee enema ten BBO eo psteuey aellve Sed. pcneee yas el cog at ates Sts tue neice alta) Peele Stren merat
Specifications
Caractéristiques
AMPLIFIER SECTION
Continuous Power Output. . .35 watts* per channel, min. RMS
both channels driven into 8 ohms
from 20 to 20,000Hz with no more
than 0.08% total harmonic
distortion.
Total Harmonic Distortion. . .No more than 0.08% (continuous
(20 to 20,000Hz, from AUX) .rated power output)
No more than 0.05% (continuous
1/2 rated power output)
No more than 0.05% (1 watt per
channel power output, 8 ohms)
Intermodulation Distortion . .No more than 0.08% (continuous
(6GOHz : 7kHz = 4: 1) power output)
No more than 0.05% (continuous
1/2 rated power output)
No more than 0.05% (1 watt per
channel power output, 8 ohms)
Output: Speaker ........ A, B (8-16 ohms), A(8-16 ohms)
+ B (8-16 ohms)
Headphone....... 8-16 ohms
Damping Factor......... 35 (20 to 20,000Hz, 8 ohms)
Input Sensitivity/Impedance:
PHONO. ss oe ee aes 2.5mV/50 kohms
BK cae a ve eS 150mV/30 kohms
TAPE IN1,2........ 150mV/30 kohms
Overload Level (T.H.D. 0.3%, 1kHz):
PHONO ........... 130mV
Ae OSE Boe eed 5V
Output Level/Impedance:
TAPE OUT 6 ok See el es 300mV/1 kohm
Frequency Response:
PHONG 36's) cee’. eS 30 to 15,000Hz, +0.5dB (RIAA STD)
AUX, TAPE IN....... 12-25,000Hz
Tone Control:
BAS ease eu Sas 2B aes +10dB (50Hz)
TREBLE i) weih oe aes +10dB (15kHz)
Loudness Contour ....... +10dB (100Hz), +5dB (10kHz)
(volume control set at —40dB position)
Signal-to-Noise Ratio (IHF, A network):
PHONO (MC)........ 66dB
TINE: a5. sek A ee 75dB
AUX, TAPE IN 1,2 ... .90dB
FM TUNER SECTION
Usable Sensitivity (mono) . . .11.2dBf/2.0uV/300 ohms
50dB Quieting Sensitivity:
Mono...........6.. 18.1dBf/5.0uV/300 Ohms
Stereo ........000- 37.2dBf/40uV/300 ohms
Signal-to-Noise Ratio (at 65dBf) :
MONG 26 86. Behe See es 75dB
Stereo ............, 73dB
Harmonic Distortion (at 65dBf):
1OOH2 6 453) i235. 408 ood 0.3% (mono), 0.5% (stereo)
1d 2 > Sa me 0.3% (mono), 0.5% (stereo)
6kHz........-2..0004 0.3% (mono), 0.5% (stereo)
Frequency Response...... 30 to 15,000Hz, +0dB, —2dB
Capture Ratio.......... 1.0dB
Alternate Channel Selectivity
(t+400kHz).......... 60dB
Spurious Response Ratio. . . .90dB
Image Response Ratio..... 80dB
IF Response Ratio ....... 100dB
AM Suppression Ratio..... 58dB
Muting Threshold. ....... 15uV
Stereo Separation........ 40dB (1kHz), 32dB (50-15kHz)
Subcarrier Product Ratio. . . .40dB
SCA Rejection Ratio...... 65dB
Antenna lnput.......... 300 ohms balanced,
75 ohms unbalanced
AM TUNER SECTION (RX-700)
Sensitivity. ........... 300uV/m (IHF, ferrite antenna)
Selectivity. ........... 40dB
Signal-to-Noise Ratio. ..... 50dB
Image Response Ratio ..... 45dB
IF Response Ratio ....... 42dB
Antenna............. Ferrite loopstick antenna
MW + LW TUNER SECTION (RX-700L)
Sensitivity:
MAW bon cc ee Rew de Se eed 270uV/m (IHF, ferrite antenna)
UW BES beac eee: 1,000uV/m (IHF, ferrite antenna)
Signal-to-Noise Ratio. ..... 50dB (MW), 45dB (LW)
Image Response Ratio. .... 45dB (MW), 45dB (LW)
IF Response Ratio ....... 40dB (MW), 40dB (LW)
MISCELLANEOUS
Power Requirement. ...... 120V/60Hz, 220V/50Hz,
240V/50Hz, or 120, 220,
| 240V/50-60Hz (switchable)
Power Consumption ...... 200 watts
Dimensions (overall) ...... 430 (W) x 115 (H) x 292(D) mm
16-15/16" x 34-17/32" x 11-1/2”
Weight (net)........... 8.1kg/17.8 Ibs.
@ Specifications and design subject to possible modification
without notice.
e *Measured pursuant to the Federal Trade Commission's
Trade Regulation Rule on Power Claims for Amplifiers
(applicable to the U.S.A. only).
Chassis Layout (Top View)
oh 51000. OF Ol a ONS
—_ «= ot
ae ear
Block Diagram
Installation du chassis (vue de dessus)
YAYOQYOOODOH®G) Cs
(S)
QVOaDS C@
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VOLTAGE SELECTOR* L109, AM OSC COIL 27. BASS CONTROL
F903, FUSE (SECONDARY) is CT105, AM OSC TRIMMER 28. TAPE 1 INDICATOR
SPEAKER FUSES 16. L112, AMIFT, 1ST 29. TAPE 2SWITCH
MAIN AMP & POWER SUPPLY PCB 17. L113, AMIFT, 2ND 30. TAPE 1 SWITCH
SPEAKER A TERMINALS 18. L114, AM IFT, DET 31. TOUCH SWITCH PCB
F902, FUSE (SECONDARY) 19. L118, FM LPF 32. FREQUENCY DISPLAY TUBE
SPEAKER B TERMINALS 20. VR102, FM MPX VCO ADJ. 33. CONTROLLER PCB
AM ANTENNA COIL 21. VOLUME CONTROL 34. POWER INDICATOR
AM ANTENNA TERMINAL PCB 22. FUNCTION SELECTOR 35. STEREO INDICATOR
CT301, AM ANTENNA TRIMMER 23. PHONO INDICATOR 36. SIGNAL INDICATOR
L101, FM ANTENNA COIL 24. BALANCE CONTROL 37. POWER SWITCH PCB
TUNER PCB 25. TREBLE CONTROL 38. POWER AMP IC
CT104, FM OSC TRIMMER 26. TAPE 2INDICATOR 39. POWER TRANSFORMER
Photo: 2-band model *Not used on the unit for CSA Spec.
Schéma synoptique
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= =
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Ta
FUNC
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TAPE 1
PHONO FM AM (Mw)
BASS CONTROL
TREBLE CONTROL
BALANCE CONTROL
LOUDNESS Sw
VOLUME CONTROL
sw —
MONITOR
Le
HH SuNC TION SELECTOR —————--5
Note 1: This p-c board diagram is for both 3-band and
2-band models. Note the following differences.
J1: Not used for 3-band models.
J2: Not used for 2-band models.
J3: Not used for 3-band models.
*A: Inidcates 3-band model installation. 2-band model instal-
lation is shown separately.
*B: Not used for 3-band models.
*C: Fixed resistor: Factory-adjusted, 560 kQ-1 MQ
*D: Fixed capacitor: Factory-adjusted, 220-470 CH.
Note 2: Specifications differ depending on destinations.
Euro/U.K.,etc. JPN
oe sta
«7 OPEN OPEN CLOSED
OPEN CLOSED OPEN
| eo | OPEN CLOSED CLOSED
*9: P-c board pattern is printed wrong. It should read as shown
in the table above.
12

Schematic Diagram Diagramme schématique
—_ eae 5-19, 21,24-,
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ena Q101 _ Q102 Seas $
3SK45R wi 2SC1674
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TC-161
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(TONE CONTROL AMP CIRCUIT )
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(MAIN
A
RESISTORS
2SC2274
-
2SA608NP
”
Unless
otherwise
specified,
resistors
are
1/4
watts,
low
2SC930
I
Gt
G2
noise
type
carbon
film
type
with
a
tolerance
of
5%.
:
2SC536NP
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|
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carbon
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resistor,
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2S8C2362 oe gg HA1196 uPD4011BC uPD1703C-016
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28C1826
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atl
(2.8V) [+88
a> EAE ELE
-20V
=
ee NH— AF-1I6
(MAIN AMP AND POWER SUPPLY CIRCUIT )
RESISTORS
Unless otherwise specified, resistors are 1/4 watts, low
noise type carbon film type with a tolerance of 5%.
ane eae ae ae oe Kilohm
Was toe ees Megohm
Ye ee ar Uninflammable carbon film resistor, 1/2 watts
$82
O fl, s824
ht es
ee
olf 3
$826
2
$827
$828
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B10} 7“ La
R915 0905 |
00
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41 — 45
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Q901 2801826
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cals
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Col4
AC26V
0.01
C917 440.22
O o:
w&5 F903 ACS
0904 4
WZ210 ST 220
D903 Pe 14
w2240 [04 R907
1,8k
6800
CAPACITORS
Unless otherwise specified, all capacitance values are
expressed in mfd.
Le ee eee Polystyrene film capacitor
NEY e203 8 2 eS Mylar film capacitor
EIN: op 2 oe Ba Low noise type capacitor
15
| (3-BAND) |
ie |
0009, 10
GL-9NG -24
Q201-7 2SA608
0228
ee
iS)
X-44
(CONTROLLER CIRCUIT)
ay Se See eee
avos-13_ asco
QO
2
oom 0
i
yT4a
eT es 2 Ly
VC OPEN
91023
10 | ACI , AC2 CLOSED
Ptit coor NSK=135 | PME 265MB522
ri2{ Roo ——s«[/2W SOLID |
(B02 b pgqg
ReO 804 HEADPHONES
(SPEAKER SW CIRCUIT)
SI-I735 Gp
\.2Vv 602
. 3p ere aa
| 0 {
OV
© Mie
R608 be aii
RL- 41
% cé6l2 a
1.2V neee
R606
AC4 T00! sav
MODEL RX-700 /-700L
Electrolytic capacitor
. . .Ceramic capacitor
e Voltage read with VTVM across the point shown and
the chassis ground (line voltage: 120V)
e Voltage reading tolerance: +20%
‘81-07-2K
Printed in Nippon, 835201385