Sony CDX-747-X Service manual

CDX-747X

SERVICE MANUAL

Ver 1.2 2001.06

SPECIFICATIONS

US Model

E Model

Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-251B-137
Optical Pick-up Name KSS-720A

System Compact disc digital audio system
Laser diode properties Material: GaAlAs

*

This output is the value measured at a distance of 200 mm
from the objective lens surface on the Optical Pick-up Block.

Frequency response 10 – 20,000 Hz
Wow and flutter Below the measurable limit
Signal-to-noise ratio

Outputs BUS control output (8 pins)

Current drain 800 mA (during CD playback)

Operating temperature –10°C to +55°C (14°F to 131°F)
Dimensions Approx. 262 × 90 × 185 mm

Mass Approx. 2.1 kg (4 lb. 10 oz.)
Power requirement 12 V DC car battery

Supplied accessories Disc magazine (1)

Design and specifications are subject to change without
notice.

Wavelength: 780 nm
Emission Duration: Continuous
Laser out-put Power: Less than

44.6 µW*

102 dB

Analog audio output (RCA pin)

800 mA (during loading or ejecting
a disc)

3

(10

/8 × 3 5/8 × 7 3/8 in.)

(w/h/d) not incl. projecting parts
and controls

(negative ground)

Parts for installation and
connections (1 set)

9-870-245-13 Sony Corporation

2001F0500-1 e Vehicle Company
C 2001.6 Shinagawa Tec Service Manual Production Group

COMPACT DISC CHANGER

CDX-747X

TABLE OF CONTENTS

1. SERVICING NOTES ................................................ 3

2. GENERAL

Installation....................................................................... 4

Connections ..................................................................... 4

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 5

3-2. Case (Upper T), Front Panel Assy.................................. 6

3-3. Mechanism Deck (MG-251B-137)................................. 6

3-4. JACK Board .................................................................... 7

3-5. MAIN Board, Slide Variable Resister

(Elevator Height Sensor) (RV202) ................................. 7

3-6. ELJ Motor Assy (Elevator) (M104)................................ 8

3-7. Escutcheon (T) ................................................................ 8

3-8. Chassis (U.S) Sub Assy .................................................. 9

3-9. Chassis Assy.................................................................... 9

3-10. RF Board ......................................................................... 10

3-11. Sled Motor Assy (251) (M101),

Optical Pick-up (KSS-720A) .......................................... 10

3-12. LSW Board, Spindle Motor (S) Sub Assy (M102) ........ 11

3-13. ELJ Motor Assy (Chucking) (M103) ............................. 11

4. ASSEMBLY

4-1. Assembly Flow................................................................ 12

4-2. Optical Pick-up Complete Assy...................................... 12

4-3. Gear (Lomini)/(Load Cam) Assy.................................... 13

4-4. Operation Check ............................................................. 13

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam­aged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur­ing repairing.

• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering
or unsoldering.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra­diation exposure.

5. MECHANICAL ADJUSTMENT .......................... 14

6. ELECTRICAL CHECK .......................................... 15

7. DIAGRAMS

7-1. Block Diagram – SERVO Section – .............................. 17

7-2. Block Diagram

– BUS CONTROL/POWER SUPPLY Section –........... 18

7-3. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 19

7-4. Printed Wiring Boards – RF/LSW Boards – ................. 20

7-5. Schematic Diagram – RF/LSW Boards –...................... 21

7-6. Printed Wiring Boards

– MAIN Board (Component Side) – .............................. 22

7-7. Printed Wiring Boards

– MAIN (Conductor Side)/SWITCH Boards –.............. 23

7-8. Schematic Diagram – MAIN Board (1/3) – .................. 24

7-9. Schematic Diagram – MAIN Board (2/3) – .................. 25

7-10. Schematic Diagram

– MAIN (3/3)/SWITCH Boards – .................................. 26

7-11. Printed Wiring Boards – JACK Board – ........................ 27

7-12. Schematic Diagram – JACK Board – ............................. 27

7-13. IC Pin Function Description ........................................... 32

8. EXPLODED VIEWS

8-1. Case Section .................................................................... 35

8-2. Mechanism Deck Section-1 (MG-251B-137) ................ 36

8-3. Mechanism Deck Section-2 (MG-251B-137) ................ 37

8-4. Mechanism Deck Section-3 (MG-251B-137) ................ 38

8-5. Mechanism Deck Section-4 (MG-251B-137) ................ 39

9. ELECTRICAL PARTS LIST ............................... 40

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

2

SECTION 1

Lever (ML.S)

Magazine assy

A

L

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK­UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro­static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body .
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis­sion, observe from more than 30 cm away from the objecti ve lens.

US model:

If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical
pick-up block.

OPTICA
PICK-UP
BLOCK

NOTE FOR REPLACING IC201

IC201 on MAIN board for this set has been changed in the mid­way of manufacturing.
In a set that the former type of IC201 is mounted, SUB board is
connected to MAIN board (conductor side).
No service parts are supplied for the former type of IC201 and
SUB board.
When the former type of IC201 is replaced, remove SUB board
and replace the former type of IC201 with the new type.

CHECKING QUALITY OF SUB BOARD

If the set works normally after SUB board is removed from MAIN
board, SUB board has a trouble.
IN this case, remove SUB board and replace IC201 now in use
with the new type of IC201.

Former Type

MAIN

BOARD

IC201

MB90473PFV-G-108-

BNDE1

SUB

BOARD

– MAIN BOARD (Component Side) –

New Type

MB90473PFV-G-110-

BNDE1

IC201

SECTION 2

GENERAL

Inserting a disc Insertion d’un disque Inserción de discos

With the arrow side facing up
Avec la partie fléchée tournée vers

1

le haut
Con el lado de la flecha hacia arriba

Labeled surface up
Etiquette vers le haut
Con la superficie de la etiqueta hacia arriba

c

Tab
Onglet
Lengüeta

Use the supplied disc magazine or the disc
magazine XA-250.The disc magazine XA-10B can
not be used with this unit.If you use any other
magazine,it may cause a malfunction.

Utilisez le magasin à disques fourni ou un magasin
à disques XA-250. Vous ne pouvez pas utiliser de
magasin à disques XA-10B avec cet appareil.
L'utilisation d'un autre type de magasin à disques
risque de provoquer un dysfonctionnement.

Disc magazine
Chargeur de disques
Cargador de discos

If the disc magazine does not lock properly

Take out the magazine, and after pressing the Z (EJECT) button,
re-insert it.

Si vous ne pouvez pas fermer le chargeur de disques

Sortez le chargeur et, après avoir appuyé sur la touche Z (EJECT), réinsérez-le.

Si el cargador de discos no se cierra correctamente

Extraiga el cargador, pulse el botón Z (EJECT) y vuelva a insertarlo.

Notes on the disc magazine

• Do not leave the disc magazine in locations with high
temperatures and high humidity such as on a car
dashboard or in the rear window where the disc magazine
will be subjected to direct sunlight.

• Do not place more than one disc at a time onto one tray,
otherwise the changer and the discs may be damaged.

• Do not drop the disc magazine or subject it to a violent
shock.

When the tray comes out

Normally, the trays will not come out of
the magazine. However, if they are
pulled out of the magazine, it is easy to
re-insert them.

Lorsque le plateau sort

En principe, les plateaux ne sortent pas
du chargeur. Toutefois, s’ils sortent du
chargeur, il est facile de les réinsérer.

Emplee el cargador de discos suministrado o el
XA-250. El cargador de discos XA-10B no puede
utilizarse con esta unidad. Si emplea otro tipo de
cargador, puede producir fallos de
funcionamiento.

Si la bandeja se sale

Normalmente, las bandejas no se salen
del cargador. No obstante, si esto ocurre,
pueden volver a insertarse con facilidad.

10 discs, one in each tray
10 disques, un par plateau
10 discos, uno en cada bandeja

To remove
Retrait
Extracción

Remarques sur le chargeur de disques

• Ne pas laisser le chargeur de disques dans un endroit très
chaud ou très humide comme sur le tableau de bord ou
sur la plage arrière de la voiture où il serait en plein soleil.

• Ne pas insérer plus d’un disque à la fois sur le plateau,
sinon le changeur et les disques risquent d’être
endommagés.

• Ne pas laisser tomber le chargeur de disques ni le cogner.

Notes

• To listen to an 8 cm (3 in.) CD, use the separately sold Sony CD adapter CSA-8.
Be sure to always use the specified adapter, as failing to do so may cause a
malfunction of the unit. If you use any other adapter, the unit may not operate
properly. When using the Sony CD adapter, make sure the three catches on the
adapter are firmly latched onto the 8 cm CD.

• Do not insert the Sony CD adapter CSA-8 in the magazine without a disc,
malfunction may result.

Remarques

• Pour écouter un disque de 8 cm (3 po.), utilisez l’adaptateur Sony CSA-8, vendu
séparément, à l’exclusion de tout autre, pour éviter tout probléme de
fonctionnement. Si vous utilisez un autre adaptateur, l’appareil risque de ne
pas fonctionner correctement. Quand vous utilisez l’adaptateur CD Sony,
vérifiez que les trois griffes soient bien en prise sur le CD de 8 cm.

• Ne pas insérer d’adaptateur CD Sony CSA-8 dans le chargeur sans disque, car
cela pourrait provoquer un dysfonctionnement.

Notas

• Para escuchar un disco compacto de 8 cm, utilice el adaptador de discos
compactos Sony CSA-8, que podrá adquirir por separado. Asegúrese de utilizar
siempre el adaptador especificado, ya que si utiliza otro tipo de adaptador es
posible que la unidad no funcione correctamente. Al utilizar el adaptador de
discos compactos Sony, asegúrese de que los tres enganches del adaptador
están firmemente ajustados al disco compacto de 8 cm.

• No inserte el adaptador de discos compactos Sony CSA-8 en el cargador sin
discos, ya que pueden producirse fallos de funcionamiento.

43

Use the unit with the door closed completely

Otherwise, foreign matter may enter the unit and
contaminate the lenses inside the changer.

Utilisez cet appareil avec la fenêtre complètement
fermée

Sinon, des corps étrangers pourraient pénétrer dans

Z (EJECT)

l’appareil et encrasser les lentilles dans le lecteur.

Emplee la unidad con la puerta completamente cerrada

De lo contrario podrían introducirse objetos extraños y
contaminar las lentes del interior del cambiador.

Notas sobre el cargador de discos

• No lo deje en lugares muy húmedos o con temperaturas
altas, como en el salpicadero del automóvil o en la
ventanilla trasera, expuesto a la luz solar directa.

• No inserte más de un disco en una bandeja de una vez, ya
que en caso contrario el cambiador y los discos pueden
dañarse.

• No lo deje caer ni lo exponga a golpes violentos.

With the cut-away portion of the tray facing you, insert
the right corner of the tray in the slot, then push in the
left corner until it clicks.

Note

Do not insert the tray upside down or in the wrong direction.

Avec la portion découpée du plateau vous faisant face,
insérer le coin droit du plateau dans la fente, puis
enfoncer le coin gauche jusqu’au déclic.

Remarque

Ne pas insérer le plateau à l’envers ou dans le mauvais sens.

CDX-747X

Ver 1.1 2001.05

This section is extracted from
instruction manual.

Push to unlock the door
Poussez pour déverrouiller la porte

2

Empuje para desbloquear la puerta

Slide open
Coulissez pour ouvrir
Deslice para abrir

Note

To prevent injury, do not insert your hand in the CD changer.

Remarque

Pour éviter toute blessure, ne pas introduire la main dans le
changeur de CD.

Nota

Para evitar lesiones, no inserte la mano en el cambiador de CD.

Note

When a disc magazine is inserted into the CD changer or the
reset button of the connected car audio is pressed, the unit will
automatically be activated and read the information on the
CDs. When the information on all the CDs in the disc magazine
has been read, the unit will automatically stop operation.

Remarque

Quand un chargeur de disques est inséré dans le changeur de
CD ou si la touche de réinitialisation de l’autoradio raccordé est
enclenchée, l’appareil se met automatiquement en marche et
reproduit les CD. Lorsque tous les CD du chargeur ont été
reproduits, l’appareil s’arrête automatiqement.

Nota

Cuando inserta un cargador de discos en el cambiador de
discos compactos, o si está pulsado el botón de reposición del
equipo de audio para automóvil conectado, la unidad se
activará automáticamente y leerá la información de los discos
compactos. Una vez leída la información de todos los discos
compactos del cargador de discos, la unidad detendrá
automáticamente la operación.

Con la parte de corte de la bandeja hacia afuera, inserte
la esquina derecha de dicha bandeja en la ranura y, a
continuación, ejerza presión en la esquina izquierda
hasta oír un chasquido.

Nota

No inserte la bandeja al revés o en la dirección incorrecta.

x

SEMI-FIXED
RESISTOR

DISC MAGAZINE GETTING OUT PROCEDURE
ON THE POWER SUPPLY IS OFF

Remove the CASE (LOWER T) beforehand

1) Press the lever (ML.S) assy in the direction of arrow A.

2) Removal the magazine assy.

Note: Take out the magazine only when the tray is completely within the

magazine. If the disk or tray is sticking out, turn on the power and
eject the magazine.

– MAIN BOARD (Conductor Side) –

SUB BOARD

Notes on handling discs

A dirty or defective disc may cause sound drop-outs during
playback. To enjoy optimum sound, handle the disc as
follows.

• Handle the disc by its edge, and to keep the disc clean,

do not touch the unlabeled surface. (fig.

• Do not stick paper or tape on the disc. (fig.

• Keep your discs in their cases or disc magazines when

not in use.
Do not expose discs to direct sunlight or heat sources
such as hot air-ducts. Do not leave discs in a car parked
in direct sunlight where there can be a considerable
rise in the temperature inside the car. (fig.

• Before playing, clean the discs with an optional
cleaning cloth. Wipe each disc in the direction of the

D

arrows. (fig.

Do not use solvents such as benzine, thinner,
commercially available cleaners or antistatic spray
intended for analog discs.

• Discs with special shapes (heart-shaped discs,

octagonal discs etc.) cannot be played on this unit.
Attempting to do so may damage the unit. Do not use
such discs.

Notes on discs

If you use the discs explained below, the sticky residue can
cause the disc to stop spinning and may cause malfunction
or ruin your discs.
Do not use second-hand or rental CDs that have a sticky
residue on the surface (for example from peeled-off stickers
or from ink, or glue leaking from under the stickers).

• There are paste residue. Ink is sticky. (fig.
Do not use rental CDs with old labels that are beginning to
peel off.

• Stickers that are beginning to peel away, leaving a

sticky residue. (fig.

Do not use your discs with labels or stickers attached.

• Labels are attached. (fig.

Notes on CD-R discs

• You can play CD-Rs (recordable CDs) designed for
audio use on this unit (fig.

• Some CD-Rs (depending on the equipment used for its
recording or the condition of the disc) may not play on
this unit.

• You cannot play a CD-R that is not finalized*.

* A process necessary for a recorded CD-R disc to be played

on the audio CD player.

)

F

)

G

A

)

B

)

C

)

E

)

)

H

).

Remarques sur la manipulation des disques

Un disque sale ou défectueux peut provoquer des pertes de son
à la lecture. Manipuler le disque comme suit pour obtenir un
son optimal.

• Manipuler le disque par son arête et le maintenir dans un

état propre, ne pas le toucher sur la surface non
imprimée. (fig.

• Ne pas coller de papier ou de bande adhésive sur le
disque. (fig.

• Conservez vos disques dans leurs boîtiers ou des
pochettes de rangement lorsqu’ils ne sont pas utilisés.
Ne pas laisser les disques en plein soleil ou près d’une
source de chaleur comme des conduits d’air chaud. Ne pas
laisser les disques dans une voiture garée en plein soleil
car la température de l’habitacle risque d’augmenter
considérablement. (fig.

• Avant la lecture, essuyer les disques avec un chiffon de
nettoyage en option. Essuyer chaque disque dans le sens
des flèches. (fig.

Ne pas utiliser de solvants tels que de la benzine, du diluant,
des produits de nettoyage vendus dans le commerce ou de
vaporisateurs anti-statiques destinés aux disques
analogiques.

• Il n’est pas possible d’utiliser les disques de formes

spéciales (en forme de cœur ou octogonaux, etc.) avec cet
appareil. Vous risquez d’endommager l’appareil.
N’essayez jamais de lire ces disques.

Remarques sur les disques

Si vous utilisez les disques décrits ci-dessous, le résidu adhésif
risque de provoquer l’arrêt de la rotation du disque et
d’entraîner un dysfonctionnement ou d’endommager vos
disques.
N’utilisez pas de CD de seconde main ou de location qui
présentent des résidus adhésifs à la surface (par exemple
d’étiquettes décollées ou d’encre, de colle dépassant de
l’étiquette).

• Résidus de colle. L’encre colle. (fig.
N’utilisez pas de CD de location avec d’anciennes étiquettes
qui commencent à se décoller.

• Les étiquettes qui commencent à se décoller laissent des

résidus adhésifs. (fig.

N’utilisez pas vos disques avec des étiquettes ou des
autocollants apposés dessus.

• Les étiquettes sont fixées. (fig.

Remarques sur les disques CD-R

• Vous pouvez écouter avec cet appareil des CD-R (CD
enregistrables) conçus pour une utilisation audio. (fig.

• Certains CD-R (en fonction des conditions de l’équipement
d’enregistrement ou du disque) risquent de ne pas être
lus avec cet appareil.

• Vous ne pouvez pas lire de disques CD-R non finalisés*.

* Un processus nécessaire à la lecture des disques CD-R

enregistrés sur le lecteur de CD audio.

A

)

B

)

C

)

D

)

E

)

F

)

G

)

Notas sobre el manejo de discos

Es posible que se produzca ausencia de sonido durante la
reproducción, si el disco está sucio o es defectuoso. Para
disfrutar de una calidad de sonido óptima, utilice el disco de
la siguiente forma.

• Maneje el disco por los bordes. Para mantenerlo

limpio, no toque la superficie sin etiqueta (fig.

• No adhiera papeles ni cinta sobre el disco (fig.

• Guarde los discos en sus cajas o en los cargadores de

discos cuando no los utilice.
No exponga los discos a la luz solar directa ni a fuentes
térmicas, como conductos de aire caliente. No deje los
discos en un automóvil aparcado bajo la luz solar
directa donde pueda producirse un considerable
aumento de temperatura en el interior de dicho
automóvil (fig.

• Antes de la reproducción, limpie los discos con un paño

de limpieza opcional en la dirección de las flechas (fig.

D

No utilice disolventes como bencina, diluyentes,
productos de limpieza disponibles en tiendas del ramo ni
aerosoles antiestáticos destinados a discos analógicos.

• Los discos con formas especiales (forma de corazón,

octagonales, etc.) no pueden reproducirse en esta
unidad. Si lo intenta, puede dañar la unidad. No utilice
tales discos.

Notas sobre los discos

Si emplea los discos descritos a continuación, el residuo
adherente puede causar que el disco deje de girar y producir
fallos de funcionamiento o dañar los discos.
No utilice discos compactos de segunda mano o de alquiler
que tengan residuos adherentes en la superficie (por
ejemplo, de adhesivos despegados o tinta, o de restos de
pegamento de los adhesivos).

• Residuos adherentes. Tinta adherente (fig.

No utilice discos compactos de alquiler con etiquetas
viejas que estén comenzando a despegarse.

• Adhesivos que empiezan a despegarse, dejando un
residuo adherente (fig.

No emplee discos con etiquetas o adhesivos fijados.

• Etiquetas adheridas (fig.

Notas sobre discos CD-R

• Puede reproducir discos CD-R (discos compactos
grabables) diseñados para uso de audio en esta unidad
(fig. H).

H

)

• Determinados discos CD-R (dependiendo del equipo
utilizado para su grabación o la condición del disco)
pueden no reproducirse en esta unidad.

• No es posible reproducir discos CD-R no finalizados*.

* Proceso necesario para reproducir en el reproductor de CD

de audio los discos CD-R grabados.

C

).

A GBC DEF

This way
Oui
Así

Not this way
Non
Así no

Not this way
Non
Así no

This way
Oui
Así

A

).

B

).

).

E

).

F

).

G

).

Look for this mark to distinguish CD-Rs for audio use.

H

Ce symbole permet de distinguer les CD-R conçus pour
une utilisation audio.
Busque esta marca para distinguir los discos CD-R para
uso de audio.

This mark denotes that a disc is not for audio use.
Ce symbole indique qu’un disque n’est pas conçu
pour une utilisation audio.
Esta marca indica que el disco no es para uso de audio.

33

CDX-747X

Precautions

• Choose the mounting location carefully, observing the following:
— The unit is not subject to temperatures exceeding 55°C (131°F) (such as in a

car parked in direct sunlight).
— The unit is not subject to direct sunlight.
— The unit is not near heat sources (such as heaters).
— The unit is not exposed to rain or moisture.
— The unit is not exposed to excessive dust or dirt.
— The unit is not subject to excessive vibration.
— The fuel tank should not be damaged by the tapping screws.
— There should be no wire harnesses or pipes under the place where you are

going to install the unit.
— The spare tire, tools or other equipment in or under the trunk should not be

interfered with or damaged by the screws or the unit itself.

• Be sure to use only the supplied mounting hardware for a safe and secure

installation.

• Use only the supplied screws.

• Make holes of ø 3.5 mm (

other side of the mounting surface.

How to install the unit

The brackets 1 provide two positions for mounting, high and low. Use the
appropriate screw holes according to your preference.

5

/32 in.) only after making sure there is nothing on the

Horizontal installation

1

InstallationInstallation Instalación

Précautions

• Choisir l’emplacement de montage en tenant compte des observations

suivantes:
— Appareil non soumis à des températures dépassant 55°C (131°F) (comme

dans une voiture parquée au soleil).
— Appareil non soumis au rayonnement solaire direct.
— Appareil à l’écart de sources de chaleur (comme des radiateurs).
— Appareil non exposé à la pluie ou à l’humidité.
— Appareil non exposé à des poussières ou à des souillures en excès.
— Appareil non exposé à des vibrations excessives.
— Vérifier que le réservoir d’essence ne risque pas d’être endommagé par les vis

taraudeuses.
— Il ne doit pas y avoir de faisceau de fils ou de tuyaux à l’emplacement du

montage.
— Vérifier que l’appareil ou les vis ne risquent pas d’endommager ou de gêner

la roue de secours, les outils, ou autre objet dans le coffre.

• Pour garantir la sécurité de l’installation, utiliser uniquement le matériel de

montage fourni.

• Utilisez uniquement les vis fournies.

• Ne percez les trous de 3,5 mm (

rien de l'autre côté de la surface de montage.

Installation de l’appareil

Les supports 1 offrent deux positions de montage, haut et bas. Utilisez les trous
de vissage appropriés en fonction de vos préférences.

5

/32 po.)ø qu'après vous être assuré qu'il n'y avait

Installation horizontale

Align with the marked position.

HORIZONTAL

Aligner sur le repère.
Alinee en la posición marcada.

Precauciones

• Elija cuidadosamente el lugar de montaje y tenga en cuenta lo siguiente:
— La unidad no queda sometida a temperaturas superiores a los 55°C (como en

un automóvil aparcado a la luz solar directa).
— La unidad no queda sometida a la luz solar directa.
— La unidad no queda cercana a fuentes térmicas (como aparatos de

calefacción).
— La unidad no queda expuesta a la lluvia o a la humedad.
— La unidad no queda expuesta a polvo o suciedad excesivos.
— La unidad no queda sometida a vibraciones excesivas.
— El depósito de combustible no deberá dañarse con los tornillos

autorroscantes.
— No deberá haber mazos de conductores ni tubos debajo del lugar donde vaya

a instalar la unidad.
— La rueda de repuesto, las herramientas, u otros equipos situados dentro o

debajo del portaequipajes no deberán verse interferidos ni dañados por los

tornillos ni por la propia unidad.

• Para realizar una instalación segura, emplee solamente la ferretería de montaje

suministrada.

• Utilice sólo los tornillos suministrados.

• Antes de hacer los orificios de ø 3,5 mm, compruebe que no haya nada en el otro

lado de la superficie de montaje.

Instalación de la unidad

Los soportes 1 proporcionan dos posiciones de montaje, alta y baja. Utilice los
orificios para tornillo apropiados según sus preferencias.

Instalación horizontal

2

Unit: mm (in.)
Unité: mm (po.)
Unidad: mm

Connections/Connexions/
Conexiones

For details, refer to the Installation/Connections manual of the car audio.
Pour plus de détails, consulter le manuel d’installation/connexions de l’autoradio.
Con respecto a los detalles, consulte el manual de instalación/conexiones del sistema de audio del

automóvil.

Connection diagram/Schéma de connexion/Diagrama de conexión

Sony BUS compatible car audio
Autoradio compatible BUS Sony
Sistema de audio del automóvil

compatible con BUS Sony

BUS AUDIO IN BUS CONTROL IN

3

2

1

5

ø 3.5 (

/32)

3

2

1

45

CDX-747X

Vertical installation Installation verticale

1

Align with the marked position.

VERTICAL

Aligner sur le repère.
Alinee en la posición marcada.

Suspended installation

When the unit is to be installed under the rear tray etc. in the trunk compartment,
make sure the following provisions are made.

• Choose the mounting location carefully so that the unit can be installed

horizontally.

• Make sure the unit does not hinder the movement of the torsion bar spring etc.

of the trunk lid.

1

Unit: mm (in.)
Unité: mm (po.)
Unidad: mm

ø 3.5 (5/32)

1

2

Inclined installation

After installing the unit, align the dials with one of the marks so that the arrows
are as vertical as possible.

Installation suspendue

Si l’appareil doit être installé sous la plage arrière dans le coffre, par exemple,
observer les précautions suivantes.

• Bien choisir l’emplacement pour pouvoir installer l’appareil à l’horizontale.

• Vérifier que l’appareil ne gêne pas les mouvements du ressort de fermeture du

coffre, entre autres.

Align with the marked position.

HORIZONTAL

Aligner sur le repère.
Alinee en la posición marcada.

2

1

Installation inclinée

Après avoir installé l’appareil, alignez les disques sur un repère de façon à ce que
les flèches soient dans la position la plus verticale possible.

Instalación vertical

2

Unit: mm (in.)
Unité: mm (po.)
Unidad: mm

3

2

1

Instalación suspendida

Si va a instalar la unidad debajo de la bandeja trasera, etc., del maletero, tenga en
cuenta lo siguiente:

• Elija el lugar de montaje cuidadosamente de forma que sea posible instalar la

unidad horizontalmente.

• Asegúrese de que la unidad no dificulta el movimiento del muelle de la barra de

torsión, etc., de la tapa del maletero.

2

3

Instalación inclinada

Una vez instalada la unidad, alinee los diales de forma que una de las marcas de
las flechas se encuentre en la posición más vertical posible.

ø 3.5 (5/32)

Note

For connecting two or more changers, the XA-C30 source selector (optional) is necessary.

Remarque

Pour raccorder deux ou plusieurs changeurs, le sélecteur de source XA-C30 (en option)

3

est nécessaire.

Nota

Si desea conectar dos o más cambiadores, es preciso utilizar un selector de fuente XA­C30 (opcional).

2

1

3

Note

Be sure to align the left and right dials with the same mark.

L
A
T

N

O
Z
I
R

O

V

H

E
R

T
I
C

V
E

R
T
IC

L

A
L

A
T
N
O
Z

I
R
O
H

Remarque

Veillez á aligner les disques gauche et droite sur le même repère.

AL

Nota

Asegúrese de alinear los diales izquierdo y derecho con la misma marca.

L
A

T
N
O
Z
I

R
O

VE

H

R
T

I
C
A
L

44

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

Note 1: The process described in can be performed in any order.
Note 2: Without completing the process described in , the next process can not be performed.

SET

3-2. CASE (UPPER T), FRONT PANEL ASSY

(Page 6)

3-3. MECHANISM DECK (MG-251B-137)

(Page 6)

CDX-747X

SECTION 3

DISASSEMBLY

3-4. JACK BOARD

(Page 7)

3-5. MAIN BOARD,

SLIDE VARIABLE RESISTOR
(ELEVATOR HEIGHT SENSOR) (RV202)
(Page 7)

3-6. ELJ MOTOR ASSY (ELEVATOR) (M104)

(Page 8)

3-9. CHASSIS ASSY

(Page 9)

3-10. RF BOARD

(Page 10)

3-11. SLED MOTOR ASSY (251) (M101),

OPTICAL PICK-UP (KSS-720A)
(Page 10)

3-12. LSW BOARD,

SPINDLE MOTOR (S) SUB ASSY (M102)
(Page 11)

3-13. ELJ MOTOR ASSY (CHUCKING) (M103)

(Page 11)

3-7. ESCUTCHEON (T)

(Page 8)

3-8. CHASSIS (U.S) SUB ASSY

(Page 9)

5

CDX-747X

)

)

)

Note: Follow the disassembly procedure in the numerical order given.

3-2. CASE (UPPER T), FRONT PANEL ASSY

3

screw

1

screw
(PTT2.6

4

lever (FLT. 838)

×

6)

(PTT2.6

×

6)

3

screw (PTT2.6 × 6)

5

case (upper T)

4

lever (FLT. 838)

3

screw (PTT2.6 × 6

2

front panel assy

3-3. MECHANISM DECK (MG-251B-137)

2

tension coil spring (FL)

1

two dampers (T)

filament tape

1

screw (PTT2.6 × 6)

4

mechanism deck (MG-251B-137)

2

tension coil spring (FL

3

jack flexible board
(CNJ901)

1

two dampers (T

6

3-4. JACK BOARD

2

Remove two solders of
the elevator motor leads (M104).

2

Remove two solders of
the switch board leads.

2

Remove three solders of
the slide variable resistor
(RV202).

4

heat sink (T)

3

screw (PTT2 × 4)

6

main board

5

two screws (FP)

1

main flexible board
(CNJ101)

5

screw (FP)

7

screw
(PTT2

×

4)

8

slide variable resistor
(elevator height sensor)
(RV202)

Remove the jack board of
the arrow.

1

ground point screw
(PTT2.6

×

6)

2

jack board

CDX-747X

3-5. MAIN BOARD , SLIDE V ARIABLE RESIST OR (ELEV A T OR HEIGHT SENSOR) (RV202)

7

CDX-747X

)

3-6. ELJ MOTOR ASSY (ELEVATOR) (M104)

1

2

bracket (EVM.S)

screw
(PTT2

×

4)

4

ELJ motor assy (elevator) (M104)

3

spacer (MO

3-7. ESCUTCHEON (T)

2

Remove the claw
in the direction of arrow

4

Remove the ditch
in the direction of arrow

5

Remove the escutcheon (T)
in the direction of arrow

A

B

two claws

3

.

.

C

.

3

claw

B

A

4

C

ditch

1

screw (T)

8

3-8. CHASSIS (U.S) SUB ASSY

1

three screws
(PTT2 × 4)

5

chassis (U.S) sub assy

3

A

2

Remove the edge
in the direction
of arrow A.

CDX-747X

1

two screws
(PTT2 × 4)

3-9. CHASSIS ASSY

5

1

screw
(PTT2 × 4)

spring (stopper.lower)

4

spring (SUT)

6

chassis assy

4

1

Turn the gear (EVD.S) fully
in the direction of arrow A.

3

2

A

3

9

CDX-747X

3-10. RF BOARD

3

two screws
(PS2

×

4)

4

RF board

3

two screws

×

4)

(PS2

2

Remove four solders
of the LSW board leads
and spindle motor leads (M102).

2

Remove two solders
of the sled motor leads
(M101).

1

OP flexible board (CN102)

3-11. SLED MOTOR ASSY (251) (M101), OPTICAL PICK-UP (KSS-720A)

1

two precision screws
(P2

×

4

Turn shaft (feed) assy
in the direction
of the arrow,
then remove it.

3)

2

sled motor assy (251)
(M101)

OP flexible board

adhesive
sheet

10

3

optical pick-up
(KSS-720A)

optical
pick-up

Note: After connecting OP flexible board,

fix it with adhesive sheet
to optical pick-up.

3-12. LSW BOARD, SPINDLE MOTOR (S) SUB ASSY (M102)

)

w

8

two precision screws
(P1.7

×

2.2)

7

1

precision screw
(P2

×

2.5)

5

bracket (CP)

CDX-747X

spring (chucking)

3

6

retainer (disc

4

precision scre
(P2 × 2.2)

2

LSW board

3-13. ELJ MOTOR ASSY (CHUCKING) (M103)

2

two screws
(PTT2 × 4)

3

retainer (CHM)

9

Remove the spindle motor (S) sub assy (M102)
in the direction of the arrow.

1

Remove two solders of
the chucking motor leads (M103).

4

ELJ motor assy (chucking) (M103)

11

CDX-747X

)

• This set can be assembled in the order shown below.

4-1. ASSEMBLY FLOW

SECTION 4

ASSEMBLY

4-2. OPTICAL PICK-UP COMPLETE ASSY

4-3. GEAR (LOMINI)/(LOAD CAM) ASSY

(Page 12)

(Page 13)

4-4. OPERATION CHECK

(Page 13)

Note: Follow the assembly procedure in the numerical order given.

4-2. OPTICAL PICK-UP COMPLETE ASSY

1

Move the lever (LOCK 3A) in the direction of arrow A,
and return it a little in the direction of arrow

chuck plate

from the position where the chuck plate is moved
down to the lower limit.

B

A

B

stop ring 2.0 (E type

3

4

tension spring (DH)

12

shaft (A)

2

optical pick-up complete assy
Note: Insert the shaft (A) first.

4-3. GEAR (LOMINI)/(LOAD CAM) ASSY

CDX-747X

gear (LOAD 2)

marking
Fig. A

3

Attach the gear (LOAD CAM) assy
with its facing inside.

gear (LOMINI)

slit

chuck plate

2

Attach the gear (LOMINI) at the position
shown in Fig. A.

shaft (rotary prevention C)

1

B

4

stop ring 1.5 (E type)

Move the lever (LOCK 3A)
fully in the direction of arrow
to move the chuck plate up.

B

4-4. OPERATION CHECK

1

Confirm that the slider moves in the direction of arrow C to move down
the chuck plate if the gear (LOAD CAM) is rotated in the direction of arrow

A

or the chuck plate moves up and the slider moves in the direction of

arrow D if the gear is rotated in the direction of arrow B.

chuck plate

slider

D

C

A

gear (LOAD CAM) assy

B

13

CDX-747X

MECHANICAL ADJUSTMENT

• Elevator Height (Address) Adjustment

SECTION 5

Note: This adjustments is necessary when the system controller (IC201),

variable resistor (RV201), slider (R), slider (L), or chassis (ELV)
was replaced for any repair.

Connection:

power supply

(DC 14.4 V)

master unit

+

GND

BUS cable

compact disc changer

CONTROL connector
(CN901)

Adjustment Method:

1. Connect this set to the master unit (e.g. MDX-C7970/C7970R),
load a disc magazine, and place the set vertically as shown
below.

2. Connect the regulated power supply to the master unit, and
turn the power on.

3. Press the DISC button on the master unit and select DISC 5.

4. At this time, if the elevator shaft does not position between
comb teeth A and B at addresses 5 and 6 as shown below,
adjust the following.

5. Press repeatedly the DISC + and – buttons on the master unit
so that the elevator shafts moves from address 6 to address 5,
or from 5 to 6. At this time, adjust RV201 on the main board
so that the elevator shaft positions smoothly between comb
teeth A and B.

6. Further, place the set horizontally and make same adjustment
as mentioned above.

7. After adjustment at addresses 5 to 6 is finished, check all op­erations from addresses 1 to 10 with the set placed vertically
and horizontally respectively to confirm that the ele vator shaft
positions in a range between comb teeth A to B.

comb tooth at address 6

comb tooth at address 5

comb tooth at address 6

elevator shaft

A
B

OK NG

A

elevator shaft

B

comb tooth at address 5

14

RV201

SECTION 6

ELECTRICAL CHECK

CDX-747X

Note:

1. This check is performed with the set placed horizontally.

2. Power supply voltage: DC14.4 V (more than 3 A).

3. Be sure to use the disc “YEDS-18” parts code: 3-702-101-01, but only
when indicated.

Connection:

power supply

(DC 14.4 V)

master unit

+

GND

BUS cable

Focus Bias Check

Connection:

– RF Board (Component Side) –

oscilloscope

(AC range)

+
–

TP (RFAC)

TP (VC)

IC101

compact disc changer

CONTROL connector
(CN901)

Procedure:

1. Connect the oscilloscope to TP (RFAC) and TP (VC) on the
RF board.

2. Put the set into play mode by loading the disc (YEDS-18).

3. Confirm that oscilloscope waveform is clear and check RF sig­nal level is correct or not.

Note:

Clear RF signal waveform means that the shape “◊” can be clearly distin­guished at the center of the waveform.

RF signal waveform

VOLT/DIV: 200 mV
TIME/DIV: 500 ns
(10 : 1 probe in use)

level: 1.4 ± 0.3 Vp-p

When observing the eye pattern, set the oscilloscope to AC range
and raise the vertical sensitivity so that it may be easily seen.

15

CDX-747X

Tracking Offset Check

Connection:

– RF Board (Component Side) –

oscilloscope

(DC range)

+

–

TP (VC)

IC101

TP (TE)

Procedure:

1. Connect the oscilloscope to TP (TE) and TP (VC) on the RF
board.

2. Put the set into play mode by loading the disc (YEDS-18).

. >

3. Press the

[ AMS ] button on the master unit, and check

the traverse waveform*.

4. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0 V dc, and check this level.

* Traverse waveform: This is the tracking error wave form appears

when crossing the track.

Traverse waveform

A

0 V

B

VOLT/DIV: 500 mV
TIME/DIV: 2 ms
Center: 0 V

16

A=B

traverse waveform
(100 track jump waveform)

7-1. BLOCK DIAGRAM – SERVO Section –

CDX-747X

SECTION 7

DIAGRAMS

DETECTOR

A

B

C

D

E

F

LASER DIODE

OPTICAL

PICK-UP BLOCK

(KSS-720A)

(TRACKING)

(FOCUS)

I-V AMP

PD LD

2-AXIS DEVICE

A

6

B

7

C

8

D

9

E

10

F

11

AUTOMATIC

CONTROL

M101

(SLED)

M102

(SPINDLE)

M103

(CHUHCKING)

RF AMP,

FOCUS/TRACKING ERROR AMP

POWER

Q101

IC101

RFAC

SUMMING

AMP

RFDC

SUMMING

AMP

FOCUS
ERROR

AMP

TRACKING

ERROR

AMP

LD

1

TRACKING/FOCUS COIL DRIVE,

SLED/SPINDLE/CHUCKING

VO3 +

8

VO3 –

9

VO4 +

6

VO4 –

7

VO2 +

10

MM

MM

MM

VO2 –

11

VO1 +

12

VO1 –

13

VL0 +

5

VL0 –

4

SUM

RW/ROM

APC AMP

MOTOR DRIVE

AC

RW/ROM

IC201

MOTOR

COIL

DRIVE

DRIVE

COIL

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

4 3

DC OFST

SW

PD

VIN3 +
VIN3 –

VIN4 +
VIN4 –

VIN2 +
VIN2 –

VIN1-B

FWD

RFDCO

12

2

REV

EQ IN

FE

TE

25
24

31
32

22
21

18

1
2

RFAC

VCA

RF

28

30

FE

16

TE

18

RF EQ

AMP

RF AMP OFFSET

CONTROL SWITCH

Q102

TFDR

48

TRDR

49

FFDR

50

FRDR

51

SFDR

46

SRDR

47

MDP

43

RFAC

15

D-RAM

IC102

RF

RFDC

ANALOG SW

A/D CONVERTER

SERVO DSP

PWM GENERATOR

DIGITAL

CLV

71

73
74

DQ1 – DQ4

A0 – A10

RAS
CAS

WE

OE

FE

TE

FE

TE

OP AMP

23

22

RFAC

ASYMMETRY

CORRECTOR

ASYI
ASYO

2, 3,

24, 25

21, 8

9 – 12, 15 – 19,

5

4

61606258

SE

MIRR
DECT

FOK

FILTER

66 69 68 67

FILI

PCO

FILO

CLTV

DIGITAL

PLL

D0 – D3

118, 117

116, 115,

A0 – A10

3 – 1, 111

109 – 106, 7 – 5,

XRAS

113

XCAS

119

XWE

114

XOE

120

ON : When completion of the disc

ON : When completion of the disc
chucking operation

chucking operation

ON : When completion of the disc

ON : When completion of the disc
save operation

save operation

VIBRATION

MEMORY

CONTROLLER

&

COMPRESSION

EXPANDER

XRDE
XWRE
XQOK

ON : When the optical pick-up

ON : When the optical pick-up
is inner position

is inner position

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

IC101

EFM

DEMODULATOR

INTERNAL BUS

SUBCODE

PROCESSOR

SW3

(LIMIT)

SW1

(CHUCKING END DETECT)

SW2

(SAVE END DETECT)

D/A

INTERFACE

32k RAM

ERROR

CORRECTOR

CPU

INTERFACE

SERVO AUTO
SEQUENSOR

SERVO

INTERFACE

SSTP

45

WDCK

GFS

DATA
CLOK
XLAT

SENS

SQSO
SQCK
SCOR

XRDE

XWRE

XQOK

SCLK

FOK

XRST

1578

1581

1523
1525
1524

1526

1514
1515
1517

159
158
1512

27

35

21

DIGITAL

OUT

SELECTOR

CLOCK

GENERATOR

DOUT

PCMD

BCK

LRCK

XTAI

XTAO

1585

15

88

1588
15

90
15

86

1593

1594

DATA

2

BCK

3

LRCK

1

CD-ROM/RW

SELECT SWITCH

Q202

SERIAL

INPUT

INTERFACE

INTERFACE

MODE

CONTROL

DM1

8 TIME OVER

SAMPLING

DIGITAL FILTER

WITH

FUNCTION

CONTROLLER

RST

2227

66

99

53

42

61
59
60

44

56
58
52

64
65
63

43

41

62

5
6

98

97

96

MULTI LEVEL

∆ ∑

MODULATOR

BPZ

CONTROL

DIGITAL FILTER,
D/A CONVERTER

IC501

EMPH

RW SEL

GRSCOR

GFS

CDDAT
CDCLK
CDLAT

SENS

SQSO
SQCK
SCOR

XRDE
XWRE
XQOK

SYSTEM CONTROLLER

IC201 (1/2)

SCLK

FOK

XRST

LOADF
LOADR

LIM SW

LOAD SW

SAVE SW

D/A

CONVERTER

CLKO

67MUTEMUTE

LOW-PASS

FILTER

CRYSTAL

OSCILLATOR

XTI

XTO

3 64

X501

16.9344MHz

VOUTL

VOUTR

SCK

MUTING CONTROL

SWITCH

Q402

• SIGNAL PATH

: CD PLAY

1516

1513

LOW-PASS

LOW-PASS

FILTER

FILTER

IC401

IC401

MUTING

Q410, 420

LINE
AMP

IC402

CN901 (1/2)

AUDIO OUT

L

R

1717

CDX-747X

7-2. BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –

SYSTEM CONTROLLER

ON : When magazine
is set

SW201

MAGAZINE

DETECT

51

MAGLK SW

IC201 (2/2)

MCK

37

RV201

ELEVATOR HEIGHT

(ADDRESS)

M104

(ELEVATOR)

ELEVATOR

MOTOR DRIVE

IC301

OUT1

9

M

OUT2

7

MOTOR

DRIVE

IN1
IN2

EEPROM

IC203

SDA
SCL

ELVF

3
4

5
6

4
3

ELVR

EEDAT

32
28

EECLK

EHS

AVRH

ELVON

BUCHK

EJECT SW

CDON

RESET

36

34

24

46

50

23

75

RV202

ELEVATOR HEIGHT

SENSOR

BATTERY

CHECK

Q301

SW801

Z

RESET SIGNAL

GENERATOR

IC303

D306

SERVO +3.3V

BUS INTERFACE

(FOR SONY BUS)

IC302

B. UP +3.3V

DRIVER +8V

D307

+3.3V

REGULATOR

IC306

DAC/SERVO +5V

14

VCC

+8V

REGULATOR

IC304

+5V

REGULATOR

IC305

+3.3V

REGULATOR

Q303, 304

PS901

CN901 (2/2)

CONTROL

7

B. UP

X180X0

81

X201
4MHz

UNI SI

UNI SO

UNI CK

BUSON

SO

16

17

18

45

10 6

SI

9

SCK

11 4

BUSON OUT

1 12

BUSON OUT

13 2

RESET

8 7

RESET

SWITCH

DATA

CLK

LOF

BUSON IN

RST

5

DATA

4

CLK

6

BUSON

2

RST

1818

CDX-747X

d

7-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

f

•

• : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the par ts face side seen from
(Component Side) the parts face are indicated.

: internal component.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

f

•

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

• H : adjustment for repair.

• Pow er voltage is dc 14.4V and fed with regulated dc pow er

• Voltages and waveforms are dc with respect to ground

• V oltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: internal component.

with mark 0 are critical for safety.
Replace only with part number specified.

supply from CD changer controller.
under no-signal conditions.

no mark : CD PLAY

Voltage variations may be noted due to normal produc­tion tolerances.

Voltage variations may be noted due to normal produc­tion tolerances.

J : CD PLAY

: Impossible to measure

∗

4

• Circuit Boards Location

W or less unless otherwise

JACK board

MAIN board

SWITCH board

RF boar

LSW board

1919

CDX-747X

7-4. PRINTED WIRING BOARDS – RF/LSW Boards –• See page 19 for Circuit Boards Location.

• Semiconductor
Location

Ref. No. Location

IC101 H-6
IC201 J-5

Q101 F-7
Q102 H-7

1

2 3 4 5 6 7 8 9 10 11 12 13

A

SW2

B

SW1

CHUKING

END DETECT

SAVE END

DETECT

C

TP106

TP105

TP103

TP104

WHT

YEL

RED

BLK

D

M101

M

(SLED)

E

M103

M

(CHUKING)

F

G

OPTICAL
PICK-UP

BLOCK

(KSS-720A)

OP FLEXIBLE

BOARD

CN102

R103

H

C107

TP

TP

(VC)

(RFAC)

R223

R222

R104

R220

R218

C202

IC201

R219

C106

R106

C209

R215

SW3

MAIN FLEXIBLE

1-679-422-

BOARD

11

(11)

CNJ101

R214

R212

R210

R208

R206

R204

R201

R213

R211

R209

R207

R205

R203

R202

C208

C207

C206

C205

C204

C203

C217

I

A

MAIN BOARD

(Page 22)

J

LSW BOARD

BLU

K

(LIMIT)

YEL

R102

IC101

TP

(TE)

R107

C109

R108

R216

R109

C103

C111

R110

Q101

C101

R117

C102

R119

R105

R122

R113

TP107

TP108

TP102

TP101

R101

Q102

R121

C108

R120

R112

1-679-421-

C104

C122

YEL

BLU

BLK

RED

(11)

C121

M102

M

(SPINDLE)

11

C105

C201

1-679-421-

11

(11)

2020

7-5. SCHEMATIC DIAGRAM – RF/LSW Boards –• See page 28 for for Waveforms. • See page 28 for IC Block Diagrams.

CDX-747X

(Page 24)

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.

2121

Replace only with part number specified.

CDX-747X

Ver 1.1 2001.05

• Semiconductor
Location

Ref. No. Location

D302 D-3
D303 E-3
D306 F-6
D307 F-5
D310 G-4
D313 E-3
D314 D-3

IC101 C-9
IC102 D-7
IC201 F-9
IC203 H-10
IC301 H-4
IC302 D-3
IC303 G-3
IC306 A-9
IC401 D-6
IC402 D-5
IC501 B-7

Q202 G-11
Q301 F-6
Q303 F-4
Q304 G-4
Q402 E-4
Q410 D-4
Q420 E-4

7-6. PRINTED WIRING BOARDS – MAIN Board (Component Side) – • See page 19 for Circuit Boards Location.

1

2 3 4 5 6 7 8 9 10 11 12

A

C307

R303

C162

C502

IC501

C506

C504

C501

R501

C112

C113

C161

IC102

C203

R205

R206

R208

B

R401

D307

R407

R408

Q301

C406

R406

C404

D306

C403

R405

C405

R403

IC401

R402

R404

R302

C

C304

C317

D314

D302

C305

D

C318

IC302

C306

D313

R301

D303

Q410

Q420

R416

R415

C412

C411

IC402

R414

R413

E

Q402

F

G

Q303

D310

C308

R305

R311

R306

R310

C312

Q304

C309

IC303

R411

R409

C408

R410

R412

R304

IC301

C302

H

C314

C301

C303

SW201

MAGAZINE

DETECT

R204

C110

C109

C111

R106

R207

C205

R107

R105

IC101

C104

C108

C107

C114

IC201

C106

R104

R103

C105

R102

C202

C201

C115

R108

R201

R109

C102

C101

IC306

C122

C123

C121

R101

C103

R202

C204

R250

IC203

R122

R123

R125

R211

R203

A

RF BOARD

CNJ101

(Page

20)

R222

R221

R209

C206

Q202

R210

MAIN FLEXIBLE BOARD

JACK FLEXIBLE BOARD

Y

B

I

JACK BOARD

CNJ901

SUB BOARD

(Page 23) (Page 23)

X

SUB BOARD

(Page 27)

J

K

11

1-679-417-

(11)

2222

7-7. PRINTED WIRING BOARDS – MAIN (Conductor Side)/SWITCH Boards – • See page 19 for Circuit Boards Location.

1

2 3 4 5 6 7 8 9 10 11

A

BP201

X501

X201

C505

BP302

(CHASSIS)

C503

C508

BP301

BLK

RED

C407

C410

C409

C311

YEL

BLU

C509

M

M104

(EVEVATOR)

B

(CHASSIS)

C319

C

D

RV201

E

F

G

H

(CHASSIS)

I

BP121

BP122

CDX-747X

Ver 1.1 2001.05

• Semiconductor
Location

Ref. No. Location

IC304 H-11
IC305 F-11

C316

IC305

C313

C310

C315

IC304

1-679-417-

11

(11)

J

SWITCH BOARD

YEL

BLU

RV202

EVEVATOR

HEIGHT

K

SENSOR

SW801

Z

SUB BOARD

TP6

TP5

TP4

TP3

TP2

TP1

(Page 22)

MAIN BOARD

X

(COMPONENT SIDE)

MAIN BOARD

(COMPONENT SIDE)

Y

(Page 22)

(NOT SUPPLIED: See page 3)

(CHASSIS)

2323

CDX-747X

7-8. SCHEMATIC DIAGRAM – MAIN Board (1/3) –• See page 28 for Waveforms. • See page 28 for IC Block Diagrams.

(Page 21)

(Page 25)

(Page 26)

2424

7-9. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 28 for Waveform. • See page 28 for IC Block Diagram.

(Page 24)

SUB

BOARD

TP6

(Page 26)

CDX-747X

Ver 1.1 2001.05

(Page 26)

2525

CDX-747X

Ver 1.1 2001.05

7-10. SCHEMATIC DIAGRAM – MAIN (3/3)/SWITCH Boards – • See page 28 for Waveforms. • See page 28 for IC Block Diagrams.

(Page 24)

(Page 25)

(Page 27)

(Page 25)

SUB BOARD

(NOT SUPPLIED: See page 3)

2626

7-11. PRINTED WIRING BOARDS – JACK Board –• See page 19 for Circuit Boards Location. 7-12. SCHEMATIC DIAGRAM – JACK Board –

C902

C901

PS901

D901

D902

C904

CNJ901

CDX-747X

1-679-418-

CN901

FB902

FB903

FB901

11

(11)

B

MAIN BOARD

CN301

(Page 22)

JACK FLEXIBLE

BOARD

(Page 26)

AUDIO OUT

CONTROL

(FOR SONY BUS)

5 4

6

7

8

2 13

L

R

4

5

7

1

2

3

8

6

2727

CDX-747X

• Waveforms – RF Board –

1 IC101 qh (FE) (CD play mode)

Approx.
100 mVp-p

2 IC101 qk (TE) (CD play mode) 2

Approx.
250 mVp-p

3 IC101 qg (RFAC) (CD play mode)

– MAIN Board –

1 IC101 rd (MDP) (CD play mode) 5 IC201 ia (X1) (CD play mode)

3

3.8

µ

s

IC101 ih (LRCK), IC501 1 (LRCK)
(CD play mode)

22.7 µs

IC101 o; (BCK), IC501 3 (BCK)
(CD play mode)

2 Vp-p

4.5 Vp-p

250 ns

6 IC501 6 (XTO) (CD play mode)

59.1 ns

3.9 Vp-p

6.2 Vp-p

• IC Block Diagrams –RF Board –

IC101 CXA2581N-T4

APC AMP

A
B
C

D

VC

–

+

SUMMING

BCD

A

RFAC

AMP

EQ IN

AC SUM

GND

DVC

VC

1

LD

2

PD

3

4

5

6

A

7

B

8

C

9

D

VOFST

RW/ROM

30

DC OFST

29

A

B

C

D

B
C

A

D

DVC

RW/ROM

EQ ON/OFF

RW/ROM

RW/ROM

RW/ROM

–

+

VOFST

–

+

–

+

DVC
VCC

EQ

RFAC

VCA

VCC

–

+

DVC

VC

RFDCI

28

RFDCO

VC

27

VC

26

RFC

25

VFC

24

BST

23

RFG

22

VCC

21

CEI

20

CE

19

TE BAL

1.4 ± 0.3 Vp-p

472 ns

4

IC101 od (XTAI), IC501 4 (CLKO)
(CD play mode)

59.1 ns

4.7 Vp-p

5.4 Vp-p

SW

DVCC

DVC

RFAC

10

E

11

F

12

13

DVC

14

15

GM

GM

APC-OFF

(Hi-Z)

RW/ROM

(H/L)

–

+

VC

RW/ROM

RW/ROM

B

D

A

C

VOFST

–

+

RW/ROM

–

+

DVC

VC

18

TE

17

FEI

16

FE

2828

IC201 LA6576L-TE-L

FWD

1

INPUT

2

REV

3

VCC2

4

VLO–

5

VLO+

6

VO4+

7

VO4–

8

VO3+

9

VO3–

10

VO2+

VO2–

11

12

VO1+

VO1–

13

VCC1

14

15

VIN1

OUTPUT

CONTROL

LEVEL

SHIFT

LEVEL
SHIFT

–

+

LEVEL
SHIFT

LEVEL
SHIFT

–

+

THERMAL SHUT DOWN

–

+

5VREG

+

–

–

+

–

+

CH2-4
MUTE

CH1

MUTE

VIN1/VREF

SWITCH

–

+

–

+

+

–

+

–

S-GND

36

35

MUTE2

34

MUTE1

33

VIN4

32

VIN4–

31

VIN4+

30

VREF-IN

29

VIN1 (VREF)-SW

28

VREF-OUT (CH1)

27

REG-OUT

REG-IN

26

25

VIN3+

VIN3–

24

VIN3

23

22

VIN2+

21

VIN2–

VIN2

20

VIN1+B

19

CDX-747X

16

VIN1–A

VIN1+A

VIN1–B

–

AMP-A

+

17

–

18

AMP-B

+

–MAIN Board –

IC102 MSM51V17400D-10TK-FS

COLUMN

ROW

TIMING

GENERATOR

INTERNAL
ADDRESS
COUNTER

ROW

DECODERS

REFRESH
CONTROL

CLOCK

WORD

DRIVERS

COLUMN

DECODERS

SENSE

AMPLIFIERS

MEMORY

CELLS

TIMING

GENERATOR

I/O

SELECTOR

INPUT

BUFFERS

DATA BUS

WRITE
CLOCK

GENERATOR

OUTPUT

BUFFERS

1 26

VCC

DQ1

2
3

DQ2

4

WE

5

RAS

NC

6
7

NC

8

A10

9

A0

10

A1

11

A2

12

A3

ADDRESS BUFFERS

VSS

25

DQ4
DQ3

24

23

CAS

22

OE

A9

21
20

NC
A8

19

A7

18
17

A6
A5

16

A4

15

VSS

13

14

VSS

29

CDX-747X

IC101 CXD3027R

XOE

XCASD2D3D0D1

120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91

D2D3D0

XOE

XCAS

XWE

XRAS

A11

A10

DVDDA0A1A2A3

A11

A10

DVDD

A0A1A2

D1

XWE

XRAS

A3

AVDD2

AVDD2

LOUT2

AIN2

LOUT2

AIN2

AOUT2

AVSS2

AOUT2

AVSS2

AVSS1

AVSS1

AOUT1

AOUT1

AIN1

AIN1

LOUT1

LOUT1

AVDD1

AVDD1

XVSS

XVSS

XTAO

XTAO

XTAI

XTAI

XVDD

XVDD

BCKI

BCKI

DVSS

XWRE

XRDE

XEMP

XWIH
XQOK

AMUTE

SDTI
XQCK
SCSY
SCOR

VSS0

SBSO

EXCK

XRST

SYSM

SDTO

XLAT
CLOK
SENS

SCLK
XSOE

ATSK

R4M

VPCO

WFCK

DEMODULATOR

CONVERTER

GFS

MDS

XUGF

EFM

SUB CODE

PROCESSOR

SERVO

AUTO

SEQUENCER

A/D

ERROR

CORRECTOR

32K

RAM

PROCESSOR

C2PO

D/A

INTERFACE

SIGNAL

BLOCK

SERVO

INTERFACE

MIRR

DFCT

FOK

SERVO DSP

FOCUS SERVO

TRACKING

SERVO

SLED SERVO

WDCK

VIBRATION

MEMORY

CONTROLLER

COMPRESSION

EXPANDER

DAC

MEMORY CONTROLLER,

BUS BOOST BLOCK

LPF

LPF

PWM GENERATOR

FOCUS PWM
GENERATOR

TRACKING PWM

GENERATOR

SLED PWM

GENERATOR

BCK

DIGITAL

OUT

XOE

XCAS

XWE
XRAS
XQOK
XWIH
XEMP
XRDE
XWRE

D0 – D4

A0 – A11

SYSM

AMUTE

HPL

HPM

HPR

PCMDI

LRCKI

BCKI

AOUT1

AIN1

LOUT1

LOUT2

AIN2

AOUT2

ATSK
SCLK
SSTP

COUT

FOK

DFCT

MIRR

FRDR

FFDR
TRDR
TFDR
SRDR
SFDR

PCMD

LRCK

DOUT

BCK

PCMDI

PCMD
LRCKI

LRCK

DOUT

VDD2

WFCK

C2PO

GFS
XPCK
XUGF

WDCK

VSS2
XTSL

AVDD3

ASYO

ASYI
BIAS
RFAC

AVSS3

CLTV

PCO

FILI

FILO
VCTL

VPCO

VC

A
B

90

BCK

89

PCMDI

88

PCMD

87

LRCKI

86

LRCK

85

DOUT

84

VDD2

83

WFCK

82

C2PO

81

GFS

80

XPCK

79

XUGF

78

WDCK

77

VSS2

76

XTSL

75

AVDD3

74

ASYO

73

ASYI

72

BIAS

71

RFAC

70

AVSS3

69

CLTV

68

PCO

67

FILI

66

FILO

65

VCTL

64

VPCO

63

VC

62

A

61

B

SELECTOR

+

XTAI

XTSL

VCTL

XTAO

CLOCK

GENERATOR

RFAC
BIAS

ASYMMETRY

ASYI

CORRECTOR

ASYO

FILO

FILI

DIGITAL

PCO
CLTV
XPCK

A9

1

A9

A8

2

A8

A7

3

A7

DVSS

4

A6

5

A6

A5

6

A5

A4

7

A4

XWRE

8

XRDE

9

XEMP

10

XWIH

11

XQOK

12

AMUTE

13

SDTI

14
15

SCSY

16

SCOR

17

VSS0

18

SBSO

19

EXCK

20
21

SYSM

22

SDTO

23

XLAT

24

CLOK

25

SENS

26

SCLK

27

XSOE

28

ATSK

29

R4M

30

PWMI

LOCK
MDP

SDTI
SCSY
SCOR
SBSO
EXCK
SDTO
XLAT
CLOK
SENS
XSOE

R4M

IGEN

RFDC

VC

D GND

SERVO BLOCK

E
F
B
A

PLL

DIGITAL

CLV

CPU

INTERFACE

OP AMP

ANALOG SWITCH

30

D VDD

FOK

DFCT

MIRR

VDD0

COUT

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

VDD0

COUT

MIRR

DFCT

FOK

PWMI

PWMI

LOCK

LOCK

HPR

HPR

HPM

HPM

HPL

HPL

VDD1

VDD1

C176

MDP

MDP

MDS

MDS

SSTP

SSTP

SFDR

SFDR

SRDR

SRDR

TFDR

TFDR

TRDR

TRDR

FFDR

FFDR

FRDR

FRDR

VSS1

VSS1

TEST

AVDD0

TES1

A VDD

IGEN

AVDD0

IGEN

A GND

AVSS0

AVSS0

RFDC

RFDC

E

E

F

F

CDX-747X

1
2
3

26
25

28
27

23
22

21

24

7
8

9

10

20
19

4

5

6

LOW-PASS

FILTER

MODE

CONTROL

INTERFACE

SERIAL

INPUT

INTERFACE

CRYSTAL

OSCILLATOR

POWER

SUPPLY

MULTI LEVEL

∆∑

MODULATOR

8 TIME OVER

SAMPLING

DIGITAL FILTER

WITH

FUNCTION CONTROLLER

SCK

OPEN

LOW-PASS

FILTER

D/A

CONVERTER

BPZ

CONTROL

D/A

CONVERTER

11
12
13

14 15

18
17
16

LRCK
DATA

BCK

DGND

VDD

VCC2R

AGND2R

CLKO

XTI

XTO

EXTR

NC

VOUTR

AGND1

DM0
MUTE

IIS
DM1

IW0
RST

ZERO

IW1

VCC2L
AGND2L

VCC1

EXTL
NC
VOUTL

IC203 BR24C16FJ-E2

START

STOP

LOGIC

LOAD

DEVICE

ADDRESS

COMPARATOR

1

GND

A0

2

A1
A2

3

4

D

R/W

DATA WORD

ADDR/COUNTER

IN

D

OUT

COMP

SERIAL

CONTROL

LOGIC

LOAD INC

Y DEC

EN

H.V. PUMP/TIMING

DATA RECOVERY

X DEC

SERIAL MUX

E

D

2

PROM

/ACK

OUT

LOGIC

IC301 LB1930M-TLM

NC

891014 13 12 11

RESET

SWITCH

10

9
8
7

6

RESET

BUS RESET

OUT1
NC
OUT2

P-GND

VCC

1

BUFFER

NC

2

IN1

3

4

IN2

VCC

8

7

TST

SDL

6

SDA

5

S-GND

IC302 BA8272FV-E2

5

VCC

2 3

1

BUS ON OUT

BUFFER

BUS ON

BUS ON IN

CONTROL

CIRCUIT

LINK OFF

CLK OUT

5 6 7

4

GND

VREF

BUS CLK

DATA OUT

BUS DATA

MOTOR

DRIVE

CIRCUIT

DATA IN

IC304 MJM2395AF08
IC305 MJM2395AF05

CONTROL

2

VOUT

3

GND

1

VIN

4

CONT

IC501 PCM1728E/2K

31

CDX-747X

7-13. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC201 MB90473PFV-G-108-BNDE1 (SYSTEM CONTROLLER)

Pin No. Pin Name I/O Description

1, 2

RAMA5, RAMA6

3 ELVR O

O Address signal output to the S-RAM Not used (open)

Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
“L” active *1

4 ELVF O

5 LOADF O

6 LOADR O

7, 8

12 to15

30, 31 NC O Not used (open)

RAMA7, RAMA12

9 VSS — Ground terminal
10 RAMA14 O Address signal output to the S-RAM Not used (open)
11 RAMWE O Write enable output to the S-RAM Not used (open)

RAMA13, RAMA8,

RAMA9, RAMA11

16 UNI SI I Serial data input from the SONY bus interface (IC302)
17 UNI SO O Serial data output to the SONY bus interface (IC302)
18 UNI CK I Serial data transfer clock signal input from the SONY bus interface (IC302)
19 LEDDAT O Not used (open)
20 LEDCLK O Not used (open)
21 VCC — Power supply terminal (+3.3V)
22 LEDLAT O Not used (open)
23 CDON O D/A converter and servo section power supply on/off control signal output “H”: power on
24 ELVON O Mechanism deck section power supply on/off control signal output “H”: power on
25 RX I Input terminal at the flash memory data write mode Not used (open)
26 TX O Output terminal at the flash memory data write mode Not used (open)
27 NC O Not used (open)
28 EECLK O Serial data transfer clock signal output to the EEPROM (IC203)
29 FL BOOT I Flash memory data write control signal input terminal “L” active Not used (fixed at “H”)

32 EEDAT I/O Two-way data bus with the EEPROM (IC203)
33 AVCC — Power supply terminal (+3.3V) (for A/D converter)
34 AVRH I Reference voltage (+3.3V) input terminal (for A/D converter)
35 AVSS — Ground terminal (for A/D converter)

36 EHS I

Motor drive signal (elevator up direction) output to the elevator motor drive (IC301)
“L” active *1

Motor drive signal (load chucking direction) output to the chucking motor drive (IC201)
“L” active *2

Motor drive signal (save direction) output to the chucking motor drive (IC201)
“L” active *2

O Address signal output to the S-RAM Not used (open)

O Address signal output to the S-RAM Not used (open)

Elevator height position detection signal input from the RV202 (elevator height sensor)
(A/D input)

37 MCK I

38, 39 KEY0, KEY1 I Not used (open)

40 VSS — Ground terminal
41 FOK I Focus OK signal input from the CXD3027R (IC101) “L”: NG, “H”: OK
42 GFS I Guard frame sync signal input from the CXD3027R (IC101) “L”: NG, “H”: OK
43 SCLK O Serial data reading clock signal output to the CXD3027R (IC101)
44 SENS I Internal status signal (sense signal) input from the CXD3027R (IC101)
45 BUSON I Bus on/off control signal input from the SONY bus interface (IC302) “H”: bus on
46 BUCHK I

Input of detection signal for the fine adjustment (elevator height (address) adjustment; RV201) of
elevator height position (A/D input)

Battery detection signal input “L”: battery on

32

CDX-747X

Pin No. Pin Name I/O Description

47, 48 MD0, MD1 I Setting terminal for the CPU operational mode (fixed at “H” in this set)

49 MD2 I Setting terminal for the CPU operational mode (fixed at “L” in this set)
50 EJECT SW I Eject switch (SW801) input terminal “L” active
51 MAGLK SW I Magazine detect switch (SW201) input terminal “L”: magazine is set
52 SCOR I Subcode sync (S0+S1) detection signal input from the CXD3027R (IC101)

53 GRSCOR I

54 NC O Not used (open)

55 HS O

56 SQSO I Subcode Q data input from the CXD3027R (IC101)
57 NC O Not used (open)
58 SQCK O Subcode Q data reading clock signal output to the CXD3027R (IC101)
59 CDCLK O Serial data transfer clock signal output to the CXD3027R (IC101)
60 CDLAT O Serial data latch pulse signal output to the CXD3027R (IC101)
61 CDDAT O Serial data output to the CXD3027R (IC101)
62 XRST O System reset signal output to the CXD3027R (IC101) and D/A converter (IC501) “L”: reset
63 XQOK O Subcode Q OK pulse signal output to the CXD3027R (IC101) “L” active
64 XRDE O D-RAM read enable signal output to the CXD3027R (IC101) “L” active
65 XWRE O D-RAM write enable signal output to the CXD3027R (IC101) “L” active
66 EMPH O Emphasis control signal output to the D/A converter (IC501) “H”: emphasis on
67 MUTE O Audio line muting on/off control signal output “H”: muting on
68 RAMA10 O Address signal output to the S-RAM Not used (open)
69 RAMCS O Chip select enable output to the S-RAM Not used (open)

70 to 74

RAMIO7 to

RAMIO3

Subcode sync (S0+S1) detection signal input from the D-RAM controller section on the
CXD3027R (IC101)

Normal/high speed playback control signal output terminal
“L”: high speed playback Not used (open)

I/O Two-way data bus with the S-RAM Not used (open)

System reset signal input from the SONY bus interface (IC302) and reset signal generator (IC303)

75 RESET I

76 RAMIO2 I/O Two-way data bus with the S-RAM Not used (open)
77 X1A O Sub system clock output terminal Not used (open)
78 X0A I Sub system clock input terminal Not used (fixed at “L”)
79 VSS — Ground terminal
80 X0 I Main system clock input terminal (4 MHz)
81 X1 O Main system clock output terminal (4 MHz)
82 VCC — Power supply terminal (+3.3V)

83, 84

85 to 88

RAMIO1, RAMIO0

RAMA0 to RAMA3

89 SINGLE I

90 DOUTSEL I Analog/digital select switch input terminal Not used (open)
91 CFSEL I Custom file on/off setting terminal “L”: custom file on (fixed at “L”)

92 TEXTSEL I

93 ESPSEL I ESP on/off setting terminal “L”: ESP on (fixed at “L”)
94 TEST I Test mode setting terminal “L”: test mode Not used (open)

95 MAG SW I Magazine in/out detect switch input terminal Not used (open)

“L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

I/O Two-way data bus with the S-RAM Not used (open)

O Address signal output to the S-RAM Not used (open)

Setting terminal for the single disc/multiple discs mode
“L”: single disc mode, “H”: multiple discs mode (fixed at “H”)

CD text mode setting terminal
“L”: CD text on, “H”: does not display track name (fixed at “L”)

33

CDX-747X

e

e

Pin No. Pin Name I/O Description

96 SAVE SW I

97 LOAD SW I

98 LIM SW I

99 RW SEL O CD-ROM/RW selection signal output “L”: CD-ROM, “H”: CD-RW

100 RAMA4 O Address signal output to the S-RAM Not used (open)

*1 elevator motor (M104) control

Mod

Terminal

ELVF (pin 4) “H”“L”“H”“L”
ELVR (pin 3) “H”“H”“L”“L”

*2 chucking motor (M103) control

Mod

Terminal

LOADF (pin 5) “H”“L”“H”“L”
LOADR (pin 6) “H”“H”“L”“L”

Save end detect switch (SW2) input terminal
“L”: When completion of the disc save operation

Chucking end detect switch (SW1) input terminal
“L”: When completion of the disc chucking operation

Sled limit in detect switch (SW3) input terminal
“L”: When the optical pick-up is inner position

STOP

STOP

ELEVATORUPELEVATOR

DOWN

LOAD

CHUCKING

SAVE BRAKE

BRAKE

34

SECTION 8

7

EXPLODED VIEWS

CDX-747X

NOTE:

• -XX and -X mean standardized parts, so they
may have some difference from the original
one.

• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑↑

Parts Color Cabinet's Color

8-1. CASE SECTION

13

#2

12

6

• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

• The mechanical parts with no reference num­ber in the exploded views are not supplied.

• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.

19

#2

B

18

#3

A

16

#2

10

14

17

#3

#3

RV202

15

7

8

#2

20

(including fA)

#2

19

MG-251B-13

18

9

The components identified by mark
0 or dotted line with mark 0 are
critical for safety.
Replace only with part number
specified.

B

5

not supplied

1

A

3

not supplied

Ref. No. Part No. Description Remark

1 3-047-852-01 DAMPER (T)

* 3 3-024-065-01 CUSHION (EJECT-T)

4 X-3375-357-1 ARM (FLT) ASSY

* 5 1-679-418-11 JACK BOARD

6 3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT

* 7 A-3283-130-A MAIN BOARD, COMPLETE

8 1-676-340-11 JACK FLEXIBLE BOARD
9 1-676-339-11 MAIN FLEXIBLE BOARD

* 10 1-679-419-11 SWITCH BOARD

12 X-3379-720-1 DOOR (L) ASSY

13 3-229-226-11 PANEL, FRONT

22

4

not supplied

not supplied

23

1

fA

(included in 20)

Ref. No. Part No. Description Remark

14 3-022-007-01 BUTTON (EJT) (Z)
15 3-041-218-21 ESCUTCHEON (T)

* 16 3-022-012-01 HEAT SINK (T)

17 3-042-244-11 SCREW (T)
18 3-038-166-01 SPRING (FL), TENSION COIL

19 3-022-010-31 LEVER (FLT. 838)

* 20 3-047-609-01 CASE (UPPER. LOWER)

22 3-935-636-11 SCREW (FP)
23 X-3375-360-1 ARM (FRT) ASSY
RV202 1-227-137-11 RES, VAR, SLIDE 10K

not supplied

(ELEVATOR HEIGHT SENSOR)

35

CDX-747X

8-2. MECHANISM DECK SECTION-1

(MG-251B-137)

#3

101

#3

#3

102

103

Ref. No. Part No. Description Remark

101 X-3378-091-1 CHASSIS (U. S) SUB ASSY
102 3-024-161-01 SPRING (SUT)

36

Ref. No. Part No. Description Remark

103 3-011-997-01 SPRING (STOPPER. LOWER)

8-3. MECHANISM DECK SECTION-2

(MG-251B-137)

CDX-747X

#3

152

151

M104

154

153

Ref. No. Part No. Description Remark

151 3-024-170-01 SPRING (SB), TENSION

* 152 3-040-790-01 BRACKET (EVM. S)

153 X-3378-092-1 CHASSIS (D. S) SUB ASSY

Ref. No. Part No. Description Remark
* 154 3-014-685-01 SPACER (MO)

M104 A-3301-123-A ELJ MOTOR ASSY (ELEVATOR)

37

CDX-747X

8-4. MECHANISM DECK SECTION-3

(MG-251B-137)

211

#8

213

212

#4

202

M103

201

204

205

206

209

208

#8

210

207

#3

214

#6

#6

#3

#6

Ref. No. Part No. Description Remark

* 201 3-024-150-01 RETAINER (CHM)
* 202 X-3378-080-1 BRACKET (CHM. D) ASSY

204 3-321-813-01 WASHER, COTTER POLYETHYLENE
205 3-017-139-01 GEAR (WORM LOAD A)
206 3-022-839-01 ARM (NSW)

207 3-573-936-00 STOPPER, REEL
208 X-3375-220-1 GEAR (LOAD CAM) ASSY

38

Ref. No. Part No. Description Remark

209 3-010-252-11 ROLLER (CRE)
210 3-010-268-01 SPRING (DH), TENSION

* 211 A-3290-194-C MAIN ASSY, CHASSIS (EVY)

212 3-010-254-11 SHAFT (ROTARY PREVENTION C)
213 3-010-253-01 GEAR (LOMINI)

* 214 A-3326-947-A RF BOARD, COMPLETE

M103 A-3301-123-A ELJ MOTOR ASSY (CHUCKING)

8-5. MECHANISM DECK SECTION-4

(MG-251B-137)

CDX-747X

258

256

#7

254

#9

257

252

M101

#11

not supplied

255

#5

#10

259

M102

not supplied

251

253

#11

not supplied

Ref. No. Part No. Description Remark

251 1-676-341-11 OP FLEXIBLE BOARD
252 3-025-743-01 SPRING (FEED), LEAF
253 X-3378-101-1 HOLDER (SLED. S) ASSY
254 3-931-832-01 GEAR (SL MIDWAY)

0255 8-820-103-03 OPTICAL PICK-UP KSS-720A/K1RP

256 A-3291-669-A SHAFT (FEED) ASSY

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

Ref. No. Part No. Description Remark

257 3-010-263-01 DETENT (SHAFT THRUST)

* 258 1-679-422-11 LSW BOARD

259 A-3301-954-A BASE (OPT. S) (J) ASSY
M101 A-3315-151-A SLED MOTOR ASSY (251)
M102 A-3301-998-A SPINDLE MOTOR (S) SUB ASSY

39

CDX-747X

JACK LSW MAIN

SECTION 9

ELECTRICAL PARTS LIST

NOTE:

• Due to standardization, replacements in the
parts list may be different from the parts speci­fied in the diagrams or the components used
on the set.

• -XX and -X mean standardized parts, so they
may have some difference from the original
one.

• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

* 1-679-418-11 JACK BOARD

***********

< CAPACITOR >

C901 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C902 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C904 1-162-927-11 CERAMIC CHIP 100PF 5% 50V

< CONNECTOR >

CN901 1-779-077-61 PLUG, CONNECTOR (CONTROL, AUDIO OUT)
CNJ901 1-778-775-21 CONNECTOR, FPC 13P

< DIODE >

D901 8-719-978-33 DIODE DTZ-TT11-6.8B
D902 8-719-978-33 DIODE DTZ-TT11-6.8B

< FERRITE BEAD >

FB901 1-500-445-21 FERRITE 0uH
FB902 1-500-445-21 FERRITE 0uH
FB903 1-500-445-21 FERRITE 0uH

< IC LINK >

PS901 1-576-398-21 LINK, IC (CCP2E63)

**************************************************************

• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order­ing these items.

• SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .

• CAPACITORS
uF: µF

• COILS
uH: µH

C106 1-162-967-11 CERAMIC CHIP 0.0033uF 10% 50V
C107 1-162-960-11 CERAMIC CHIP 220PF 10% 50V
C108 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C109 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C110 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V

C111 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C112 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C113 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C114 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C115 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V

C121 1-162-960-11 CERAMIC CHIP 220PF 10% 50V
C122 1-162-960-11 CERAMIC CHIP 220PF 10% 50V
C123 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C161 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C162 1-164-156-11 CERAMIC CHIP 0.1uF 25V

C201 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C202 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C203 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C204 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C205 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C206 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C301 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C302 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C303 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C304 1-164-156-11 CERAMIC CHIP 0.1uF 25V

The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.

When indicating parts by reference
number, please include the board.

* 1-679-422-11 LSW BOARD

**********

< SWITCH >

SW3 1-529-565-41 SWITCH, PUSH (1KEY) (LIMIT)

**************************************************************

* A-3283-130-A MAIN BOARD, COMPLETE

*********************

1-676-339-12 MAIN FLEXIBLE BOARD
1-676-340-12 JACK FLEXIBLE BOARD

< CAPACITOR >

C101 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C102 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C103 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C104 1-162-965-11 CERAMIC CHIP 0.0015uF 10% 50V
C105 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V

40

C305 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C306 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C307 1-165-112-11 CERAMIC CHIP 0.33uF 20% 10V
C308 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C309 1-164-156-11 CERAMIC CHIP 0.1uF 25V

C310 1-115-466-00 ELECT 1000uF 20% 16V
C311 1-126-382-11 ELECT 100uF 20% 16V
C312 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C313 1-126-382-11 ELECT 100uF 20% 16V
C314 1-164-156-11 CERAMIC CHIP 0.1uF 25V

C315 1-115-466-00 ELECT 1000uF 20% 16V
C316 1-126-157-11 ELECT 10uF 20% 16V
C317 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C318 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C319 1-127-491-00 ELECT (SOLID) 22uF 20% 10V

C403 1-164-730-11 CERAMIC CHIP 0.0012uF 10% 50V
C404 1-164-730-11 CERAMIC CHIP 0.0012uF 10% 50V
C405 1-164-217-11 CERAMIC CHIP 150PF 5% 50V
C406 1-164-217-11 CERAMIC CHIP 150PF 5% 50V

CDX-747X

Ver 1.1 2001.05

MAIN

Ref. No. Part No. Description Remark

C407 1-126-382-11 ELECT 100uF 20% 16V

C408 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C409 1-115-650-11 ELECT 47uF 20% 16V
C410 1-115-650-11 ELECT 47uF 20% 16V
C411 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C412 1-162-927-11 CERAMIC CHIP 100PF 5% 50V

C501 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C502 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C503 1-115-651-11 ELECT 100uF 20% 16V
C504 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C505 1-115-651-11 ELECT 100uF 20% 16V

C506 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C508 1-115-650-11 ELECT 47uF 20% 16V
C509 1-115-650-11 ELECT 47uF 20% 16V

< DIODE >

D302 8-719-017-94 DIODE MA8180
D303 8-719-017-94 DIODE MA8180
D306 8-719-069-56 DIODE UDZS-TE17-6.2B
D307 8-719-988-61 DIODE 1SS355TE-17
D310 8-719-422-62 DIODE MA8062-L-TX

D313 8-719-071-34 DIODE RB521S-30-TE61
D314 8-719-071-34 DIODE RB521S-30-TE61

< IC >

IC101 8-752-398-18 IC CXD3027R
IC102 8-759-538-44 IC MSM51V17400D-10TK-FS
IC201 6-800-233-02 IC MB90473PFV-G-110-BNDE1
IC203 8-759-660-38 IC BR24C16FJ-E2
IC301 8-759-527-33 IC LB1930M-TLM

IC302 8-759-697-48 IC BA8272FV-E2
IC303 8-759-827-97 IC XC61CN2502PR
IC304 8-759-833-13 IC NJM2395AF08
IC305 8-759-833-12 IC NJM2395AF05
IC306 8-759-444-93 IC RH5RL33AA-T1

IC401 8-759-662-11 IC TLV2362IPWR
IC402 8-759-662-11 IC TLV2362IPWR
IC501 8-759-648-44 IC PCM1728E/2K

< TRANSISTOR >

Q202 8-729-901-00 TRANSISTOR DTC124EK
Q301 8-729-230-49 TRANSISTOR 2SC2712-YG
Q303 8-729-820-46 TRANSISTOR 2SB1202FAS
Q304 8-729-230-49 TRANSISTOR 2SC2712-YG
Q402 8-729-027-23 TRANSISTOR DTA114EKA-T146

Ref. No. Part No. Description Remark

R109 1-216-857-11 METAL CHIP 1M 5% 1/16W
R122 1-216-839-11 METAL CHIP 33K 5% 1/16W

R123 1-216-845-11 METAL CHIP 100K 5% 1/16W
R125 1-216-839-11 METAL CHIP 33K 5% 1/16W
R201 1-216-845-11 METAL CHIP 100K 5% 1/16W
R202 1-216-845-11 METAL CHIP 100K 5% 1/16W
R203 1-216-833-11 METAL CHIP 10K 5% 1/16W

R204 1-216-853-11 METAL CHIP 470K 5% 1/16W
R205 1-216-864-11 METAL CHIP 0 5% 1/16W
R206 1-216-864-11 METAL CHIP 0 5% 1/16W
R207 1-216-821-11 METAL CHIP 1K 5% 1/16W
R208 1-216-864-11 METAL CHIP 0 5% 1/16W

R209 1-216-833-11 METAL CHIP 10K 5% 1/16W
R210 1-216-864-11 METAL CHIP 0 5% 1/16W
R211 1-216-864-11 METAL CHIP 0 5% 1/16W
R221 1-216-833-11 METAL CHIP 10K 5% 1/16W
R222 1-216-833-11 METAL CHIP 10K 5% 1/16W

R250 1-216-845-11 METAL CHIP 100K 5% 1/16W
R301 1-216-841-11 METAL CHIP 47K 5% 1/16W
R302 1-216-845-11 METAL CHIP 100K 5% 1/16W
R303 1-216-846-11 METAL CHIP 120K 5% 1/16W
R304 1-216-847-11 METAL CHIP 150K 5% 1/16W

R305 1-216-845-11 METAL CHIP 100K 5% 1/16W
R306 1-216-841-11 METAL CHIP 47K 5% 1/16W
R310 1-216-841-11 METAL CHIP 47K 5% 1/16W
R311 1-216-845-11 METAL CHIP 100K 5% 1/16W
R401 1-216-833-11 METAL CHIP 10K 5% 1/16W

R402 1-216-833-11 METAL CHIP 10K 5% 1/16W
R403 1-216-833-11 METAL CHIP 10K 5% 1/16W
R404 1-216-833-11 METAL CHIP 10K 5% 1/16W
R405 1-216-833-11 METAL CHIP 10K 5% 1/16W
R406 1-216-833-11 METAL CHIP 10K 5% 1/16W

R407 1-218-871-11 RES-CHIP 10K 2% 1/16W
R408 1-218-871-11 RES-CHIP 10K 2% 1/16W
R409 1-218-645-11 RES-CHIP 11K 2% 1/16W
R410 1-218-645-11 RES-CHIP 11K 2% 1/16W
R411 1-216-853-11 METAL CHIP 470K 5% 1/16W

R412 1-216-853-11 METAL CHIP 470K 5% 1/16W
R413 1-216-809-11 METAL CHIP 100 5% 1/16W
R414 1-216-809-11 METAL CHIP 100 5% 1/16W
R415 1-216-845-11 METAL CHIP 100K 5% 1/16W
R416 1-216-845-11 METAL CHIP 100K 5% 1/16W

R501 1-216-821-11 METAL CHIP 1K 5% 1/16W

< VARIABLE RESISTOR >

Q410 8-729-015-39 TRANSISTOR DTC323TK
Q420 8-729-015-39 TRANSISTOR DTC323TK

< RESISTOR >

R101 1-216-839-11 METAL CHIP 33K 5% 1/16W
R102 1-216-833-11 METAL CHIP 10K 5% 1/16W
R103 1-216-827-11 METAL CHIP 3.3K 5% 1/16W
R104 1-216-827-11 METAL CHIP 3.3K 5% 1/16W
R105 1-216-857-11 METAL CHIP 1M 5% 1/16W

R106 1-216-853-11 METAL CHIP 470K 5% 1/16W
R107 1-216-833-11 METAL CHIP 10K 5% 1/16W
R108 1-216-853-11 METAL CHIP 470K 5% 1/16W

RV201 1-223-834-11 RES, ADJ, CARBON 47K

< SWITCH >

SW201 1-529-565-41 SWITCH, PUSH (1KEY) (MAGAZINE DETECT)

< VIBRATOR >

X201 1-781-282-11 VIBRATOR, CERAMIC (4MHz)
X501 1-760-307-11 VIBRATOR, CERAMIC (16.9344MHz)

**************************************************************

41

CDX-747X

RF SWITCH

Ref. No. Part No. Description Remark

* A-3326-947-A RF BOARD, COMPLETE

******************

< CAPACITOR >

C101 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C102 1-126-206-11 ELECT CHIP 100uF 20% 6.3V
C103 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C104 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C105 1-126-206-11 ELECT CHIP 100uF 20% 6.3V

C106 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C107 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C108 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C109 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C111 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C121 1-126-206-11 ELECT CHIP 100uF 20% 6.3V
C122 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C201 1-117-681-11 ELECT CHIP 100uF 20% 16V
C202 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C203 1-162-962-11 CERAMIC CHIP 470PF 10% 50V

C204 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C205 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C206 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C207 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C208 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V

C209 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C217 1-164-156-11 CERAMIC CHIP 0.1uF 25V

< CONNECTOR >

CN102 1-778-303-21 CONNECTOR, FPC (ZIF) 16P
CNJ101 1-778-777-21 CONNECTOR, FPC 26P

< IC >

IC101 8-752-089-74 IC CXA2581N-T4
IC201 8-759-832-99 IC LA6576L-TE-L

< TRANSISTOR >

Ref. No. Part No. Description Remark

R201 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R202 1-216-833-11 METAL CHIP 10K 5% 1/16W
R203 1-216-833-11 METAL CHIP 10K 5% 1/16W

R204 1-216-839-11 METAL CHIP 33K 5% 1/16W
R205 1-216-833-11 METAL CHIP 10K 5% 1/16W
R206 1-216-839-11 METAL CHIP 33K 5% 1/16W
R207 1-216-833-11 METAL CHIP 10K 5% 1/16W
R208 1-216-839-11 METAL CHIP 33K 5% 1/16W

R209 1-216-833-11 METAL CHIP 10K 5% 1/16W
R210 1-216-839-11 METAL CHIP 33K 5% 1/16W
R211 1-216-833-11 METAL CHIP 10K 5% 1/16W
R212 1-216-839-11 METAL CHIP 33K 5% 1/16W
R213 1-216-833-11 METAL CHIP 10K 5% 1/16W

R214 1-216-839-11 METAL CHIP 33K 5% 1/16W
R215 1-216-841-11 METAL CHIP 47K 5% 1/16W
R216 1-216-842-11 METAL CHIP 56K 5% 1/16W
R218 1-216-841-11 METAL CHIP 47K 5% 1/16W
R219 1-216-843-11 METAL CHIP 68K 5% 1/16W

R220 1-216-834-11 METAL CHIP 12K 5% 1/16W
R222 1-216-821-11 METAL CHIP 1K 5% 1/16W
R223 1-216-819-11 METAL CHIP 680 5% 1/16W

< SWITCH >

SW1 1-529-566-41 SWITCH, PUSH (1KEY)

(CHUKING END DETECT)

SW2 1-529-566-41 SWITCH, PUSH (1KEY) (SAVE END DETECT)

**************************************************************

* 1-679-419-11 SWITCH BOARD

*************

< SWITCH >

SW801 1-692-431-21 SWITCH, TACTILE (Z)

***********************************************************

MISCELLANEOUS

**************

Q101 8-729-141-48 TRANSISTOR 2SB624-BV345
Q102 8-729-901-00 TRANSISTOR DTC124EK

< RESISTOR >

R101 1-216-801-11 METAL CHIP 22 5% 1/16W
R102 1-216-837-11 METAL CHIP 22K 5% 1/16W
R103 1-216-837-11 METAL CHIP 22K 5% 1/16W
R104 1-216-845-11 METAL CHIP 100K 5% 1/16W
R105 1-216-801-11 METAL CHIP 22 5% 1/16W

R106 1-216-864-11 METAL CHIP 0 5% 1/16W
R107 1-216-845-11 METAL CHIP 100K 5% 1/16W
R108 1-216-833-11 METAL CHIP 10K 5% 1/16W
R109 1-216-836-11 METAL CHIP 18K 5% 1/16W
R110 1-216-836-11 METAL CHIP 18K 5% 1/16W

R112 1-216-845-11 METAL CHIP 100K 5% 1/16W
R113 1-218-859-11 METAL CHIP 3.3K 0.5% 1/16W
R117 1-216-833-11 METAL CHIP 10K 5% 1/16W
R119 1-216-864-11 METAL CHIP 0 5% 1/16W
R120 1-218-879-11 METAL CHIP 22K 0.5% 1/16W

R121 1-218-847-11 METAL CHIP 1K 0.5% 1/16W
R122 1-218-847-11 METAL CHIP 1K 0.5% 1/16W

42

251 1-676-341-11 OP FLEXIBLE BOARD

0 255 8-820-103-03 OPTICAL PICK-UP KSS-720A/K1RP

M101 A-3315-151-A SLED MOTOR ASSY (251)
M102 A-3301-998-A SPINDLE MOTOR (S) SUB ASSY
M103 A-3301-123-A ELJ MOTOR ASSY (CHUCKING)

M104 A-3301-123-A ELJ MOTOR ASSY (ELEVATOR)
RV202 1-227-137-11 RES, VAR, SLIDE 10K

************************************************************

**************

HARDWARE LIST

**************

#2 7-685-792-09 SCREW +PTT 2.6X6 (S)
#3 7-685-781-09 SCREW +PTT 2X4 (S)
#4 7-624-104-04 STOP RING 2.0, TYPE-E
#5 7-627-554-07 SCREW, PRECISION +P 2X2.2
#6 7-628-253-00 SCREW +PS 2X4

#7 7-627-553-27 SCREW, PRECISION +P 2X2.5
#8 7-624-102-04 STOP RING 1.5, TYPE-E
#9 7-627-850-28 SCREW, PRECISION +P 1.4X3
#10 7-627-000-00 SCREW, PRECISION +P 1.7X2.2 TYPE 3

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.

(ELEVATOR HEIGHT SENSOR)

CDX-747X

Ref. No. Part No. Description Remark

#11 7-627-553-37 PRECISION SCREW +P 2X3 TYPE 3

************************************************************

ACCESSORIES & PACKING MATERIALS

*******************************

3-225-284-11 MANUAL, INSRTUCTION (ENGLISH, FRENCH,

SPANISH, TRADITIONAL CHINESE)

A-3301-944-A MAGAZINE (250T) ASSY

***********************************************************

PARTS FOR INSTALLATION AND CONNECTIONS

**************************************

501 3-040-583-21 BRACKET (T)

* 502 X-3369-824-1 SCREW ASSY

503 1-590-874-11 CORD, CONNECTION (RCA PIN CORD 5.5m)
504 1-590-519-21 CORD (WITH CONNECTOR) (BUS CABLE 5.5m)

501 502

BRACKET

× 2

+PSW4 × 10

× 4

TAPPING SCREW

SCREW ASSY

(DIA.5 × 20) × 4

Ref. No. Part No. Description Remark

503 504

RCA PIN CORD 5.5 m

× 1

BUS CABLE 5.5 m

× 1

43

CDX-747X

MEMO

44

SERVICE MANUAL

Ver 1.2 2001.06

SUPPLEMENT-1

File this supplement with the service manual.

Subject: Change of RF/LSW boards

CDX-747X

US Model

E Model

(ECN-CSA04819)

In this set, RF/LSW boards have been changed in the midway of pro­duction.
Printed wiring boards and schematic diagrams of new type, and changed
parts list are described in this supplement-1.
Refer to original service manual for other information.

• NEW/FORMER TYPE DISCRIMINATION

– RF BOARD (Component Side) –

Former type : 1-679-421-11
New type : 1-679-421-12

– LSW BOARD (Component Side) –

Former type : 1-679-422-11
New type : 1-679-422-12

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

CDX-747X

Note on Printed Wiring Board:

• Y : parts extracted from the conductor side.

• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern f ace side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the par ts face side seen from
(Component Side) the parts face are indicated.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

Note: The components identified by mark 0 or dotted line

with mark 0 are critical for safety.
Replace only with part number specified.

• A : B+ Line.

• H : adjustment for repair.

• Power v oltage is dc 14.4V and fed with regulated dc power
supply from CD changer controller.

• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY

• V oltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc­tion tolerances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc­tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.
J : CD PLAY

: Impossible to measure

∗

4

W or less unless otherwise

CDX-747X

PRINTED WIRING BOARDS – RF/LSW Boards –

• Semiconductor
Location

Ref. No. Location

IC101 H-6
IC201 J-5

Q101 F-7
Q102 H-7

1

2 3 4 5 6 7 8 9 10 11 12 13

A

SW2

B

SW1

CHUKING

END DETECT

SAVE END

DETECT

C

TP106

TP105

TP103

TP104

WHT

YEL

RED

BLK

D

M101

M

(SLED)

E

M103

M

(CHUKING)

F

G

OPTICAL
PICK-UP

BLOCK

(KSS-720A)

OP FLEXIBLE

BOARD

CN102

R103

H

C107

TP

TP

(VC)

(RFAC)

R223

R222

R104

R220

R218

C202

IC201

R219

C106

R106

C209

R215

SW3

MAIN FLEXIBLE

1-679-422-

BOARD

12

(12)

CNJ101

R214

R212

R210

R208

R206

R204

R201

R213

R211

R209

R207

R205

R203

R202

C208

C207

C206

C205

C204

C203

C217

I

A

MAIN BOARD

J

LSW BOARD

BLU

K

(LIMIT)

YEL

R102

IC101

TP

(TE)

R107

C109

R108

R216

R109

C103

C111

R110

Q101

C101

R117

C102

R119

R105

R122

R113

TP107

TP108

TP102

TP101

R101

Q102

R121

C108

R120

R112

1-679-421-

C104

C122

YEL

BLU

BLK

RED

(12)

C121

M102

M

(SPINDLE)

12

C105

C201

1-679-421-

12

(12)

22

SCHEMATIC DIAGRAM – RF/LSW Boards –

CDX-747X

The components identified by mark 0 or dotted
line with mark 0 are critical for safety.

33

Replace only with part number specified.

CDX-747X

LSW RF

ELECTRICAL PARTS LIST

NOTE:

• Due to standardization, replacements in the
parts list may be different from the parts speci­fied in the diagrams or the components used
on the set.

• -XX and -X mean standardized parts, so they
may have some difference from the original
one.

• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

* 1-679-422-12 LSW BOARD

**********

< SWITCH >

SW3 1-529-565-41 SWITCH, PUSH (1KEY) (LIMIT)

**************************************************************

* A-3326-947-A RF BOARD, COMPLETE

******************

< CAPACITOR >

C101 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C102 1-126-206-11 ELECT CHIP 100uF 20% 6.3V
C103 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C104 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C105 1-126-206-11 ELECT CHIP 100uF 20% 6.3V

C106 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C107 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C108 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C109 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C111 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C121 1-126-206-11 ELECT CHIP 100uF 20% 6.3V
C122 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C201 1-117-681-11 ELECT CHIP 100uF 20% 16V
C202 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C203 1-162-962-11 CERAMIC CHIP 470PF 10% 50V

C204 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C205 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C206 1-162-962-11 CERAMIC CHIP 470PF 10% 50V
C207 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C208 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V

C209 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C217 1-164-156-11 CERAMIC CHIP 0.1uF 25V

< CONNECTOR >

CN102 1-778-303-21 CONNECTOR, FPC (ZIF) 16P
CNJ101 1-778-777-21 CONNECTOR, FPC 26P

• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order­ing these items.

• SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .

R101 1-216-801-11 METAL CHIP 22 5% 1/16W
R102 1-216-837-11 METAL CHIP 22K 5% 1/16W
R103 1-216-837-11 METAL CHIP 22K 5% 1/16W
R104 1-216-845-11 METAL CHIP 100K 5% 1/16W
R105 1-216-801-11 METAL CHIP 22 5% 1/16W

R106 1-216-864-11 METAL CHIP 0 5% 1/16W
R107 1-216-845-11 METAL CHIP 100K 5% 1/16W
R108 1-216-833-11 METAL CHIP 10K 5% 1/16W
R109 1-216-836-11 METAL CHIP 18K 5% 1/16W
R110 1-216-836-11 METAL CHIP 18K 5% 1/16W

R112 1-216-845-11 METAL CHIP 100K 5% 1/16W
R113 1-218-859-11 METAL CHIP 3.3K 0.5% 1/16W
R117 1-216-833-11 METAL CHIP 10K 5% 1/16W
R119 1-216-864-11 METAL CHIP 0 5% 1/16W
R120 1-218-879-11 METAL CHIP 22K 0.5% 1/16W

R121 1-218-847-11 METAL CHIP 1K 0.5% 1/16W
R122 1-218-847-11 METAL CHIP 1K 0.5% 1/16W
R201 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R202 1-216-833-11 METAL CHIP 10K 5% 1/16W
R203 1-216-833-11 METAL CHIP 10K 5% 1/16W

R204 1-216-839-11 METAL CHIP 33K 5% 1/16W
R205 1-216-833-11 METAL CHIP 10K 5% 1/16W
R206 1-216-839-11 METAL CHIP 33K 5% 1/16W
R207 1-216-833-11 METAL CHIP 10K 5% 1/16W
R208 1-216-839-11 METAL CHIP 33K 5% 1/16W

R209 1-216-833-11 METAL CHIP 10K 5% 1/16W
R210 1-216-839-11 METAL CHIP 33K 5% 1/16W
R211 1-216-833-11 METAL CHIP 10K 5% 1/16W
R212 1-216-839-11 METAL CHIP 33K 5% 1/16W
R213 1-216-833-11 METAL CHIP 10K 5% 1/16W

R214 1-216-839-11 METAL CHIP 33K 5% 1/16W
R215 1-216-841-11 METAL CHIP 47K 5% 1/16W
R216 1-216-842-11 METAL CHIP 56K 5% 1/16W
R218 1-216-841-11 METAL CHIP 47K 5% 1/16W
R219 1-216-843-11 METAL CHIP 68K 5% 1/16W

• CAPACITORS

uF: µF

• COILS

uH: µH

When indicating parts by reference
number, please include the board.

< RESISTOR >

< IC >

IC101 8-752-089-74 IC CXA2581N-T4
IC201 8-759-832-99 IC LA6576L-TE-L

< TRANSISTOR >

Q101 8-729-141-48 TRANSISTOR 2SB624-BV345
Q102 8-729-901-00 TRANSISTOR DTC124EK

R220 1-216-834-11 METAL CHIP 12K 5% 1/16W
R222 1-216-821-11 METAL CHIP 1K 5% 1/16W
R223 1-216-819-11 METAL CHIP 680 5% 1/16W

< SWITCH >

SW1 1-529-566-31 SWITCH, PUSH (1KEY)

(CHUKING END DETECT)

SW2 1-529-566-31 SWITCH, PUSH (1KEY) (SAVE END DETECT)

CDX-747X

REVISION HISTORY

Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.

Ver. Date Description of Revision

1.2 2001.06 Change of RF/LSW BOARDS (ECN-CSA04819)

1.1 2001.05 Addition of SUB BOARD (ECN-CSB02847)

1.0 2001.02 New