Sony CDX-757-MX Service manual

CDX-757MX

SERVICE MANUAL

Ver 1.1 2002.08

SPECIFICATIONS

US Model

Canadian Model

E Model

Model Name Using Similar Mechanism CDX-747X
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 5 – 20,000 Hz
Wow and flutter Below the measurable limit
Signal-to-noise ratio 102 dB
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*

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)

9-873-618-02 Sony Corporation

2002H0500-1 e Vehicle Company
C 2002.08 Published by Sony Engineering Corporation

COMPACT DISC CHANGER

CDX-757MX

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 objectiv e lens.

US/Canadian 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

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.

Lever (ML.S)

A

Magazine assy

SEMI-FIXED
RESISTOR

CAUTION

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

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.

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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS
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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

2

CDX-757MX

TEST DISC

This set can playback a CD-R, CD-RW for audio use. When test
this set, use the following test disc.
Test disc for CD-R: TCD-R082LMT (Part No.: J-2502-063-1)
Test disc for CD-RW: TCD-W082L (Part No.: J-2502-063-2)

Notes on CD-R/CD-RW discs

•

You can play CD-Rs/CD-RWs (recordable CDs/rewritable CDs) on
this unit (fig. E).

•

Some CD-Rs/CD-RWs (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/CD-RW that is not finalized*.

•

A CD-R/CD-RW to which a session can be added can be played.

*

A process necessary for a recorded CD-R/CD-RW disc to be played
on the audio CD player.

E

Audio CD

MP3 files

About MP3 files

Folder (album)

1

1

MP3 file (track)

2

2

3

3

4

5

6

6

7

4

5

7

8

8

9

Tree 1 Tree 2 Tree 3 Tree 4 Tree 5
(root)

MP3 (MPEG 1 Audio Layer-3) is a standard technology and format for
compressing a sound sequence. The file is compressed to about 1/10 of its
original size. Sounds outside the range of human hearing are compressed
while the sounds we can hear are not compressed.

Notes on discs

You can play MP3 files recorded on CD-ROMs, CD-Rs (recordable CDs),
and CD-RWs (rewritable CDs). The disc must be in the ISO 9660*
level 2 format, or Joliet or Romeo in the expansion format. You can use a
disc recorded in Multi Session*

*1ISO 9660 Format

The most common international standard for the logical format of files
and folders on a CD-ROM.
There are several specification levels. In Level 1, file names must be in
the 8.3 format (no more than eight characters in the name, no more than
three characters in the extension “.MP3”) and in capital letters. Folder
names can be no longer than eight characters. There can be no more
than eight nested folder levels.
In level 2, file names can be up to 31 characters long (including the
delimiter, the dot “.”, and the extension “. MP3”). Each folder can have
up to 8 trees.
For Joliet or Romeo in the expansion format, make sure of the contents
of the writing software, etc.

*2Multi Session

This is a recording method that enables adding of data using the Track­At-Once method. Conventional CDs begin at a CD control area called
the Lead-in and end at an area called Lead-out. A Multi Session CD is a
CD having multiple sessions, with each segment from Lead-in to Lead­out regarded as a single session.
CD-Extra: A format that contains audio tracks (audio CD data) in

Session 1, and a data track in Session 2.

Mixed CD: A format that contains a data track and audio tracks (audio

Notes

• If MP3 files and Audio data are mixed in a disc, the first identified

• With formats other than ISO 9660 level 1, folder names or file

• When naming, be sure to add the file extension “.MP3” to the file

• If you put the extension “.MP3” to a file other than MP3, the unit

The playback order of the MP3 files

The playback order of the folders and files is shown in the illustration
above.

Notes

•A folder that does not include an MP3 file is skipped.

•If you playback an MP3 file before the information on all the CDs

• The unit reads the disc information (the number of folders and

•When a disc magazine is inserted into the CD changer or the reset

• The following discs take a longer time to start playback.

• Depending on the condition of the disc, it may not play back. For

•Maximum folder number in a disc: 255

•Maximum file number in a disc: 511

Cautions when playing a disc that is recorded in Multi Session

• When the first track of the first session is audio CD data: Non-music data

• When the first track of the first session is not audio CD data:

Note on character codes

Character codes vary depending on the master unit.
For details, refer to the operating instructions for the master unit.

Note on display of playing time

In the following cases, elapsed playing time may not be displayed
accurately.
– when an MP3 file of VBR (variable bit rate) is played.
– during fast-forward/reverse.

Tip

• To specify a desired playback order, before the folder or file

•A disc/album/track name or track number that is over 99 may not

CD data) in a session.

file or data will be played back.
names may not be displayed correctly.
name.
cannot recognize the file properly and will generate random noise

that could damage your speakers.

in the disc magazine has been read, and then set the ignition to
OFF or select another source, the beginning of the current track
may play back when you resume playback.

files, or the location of the data) before playback of an MP3 file. It
may take more time to start playback of a disc with a complex file
structure.

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. The unit
firstly reads all of the disc information in the disc magazine.
Depending on the recording method, it may take some time to
stop the operation even if you set the ignition key to OFF during
disc reading. This is not a malfunction.

–a disc recorded with complicated tree structure.
–a disc recorded in Multi Session.
–a disc to which data can be added.
We recommend that you make only one or two trees for each disc.

details, please refer to “Notes on discs.”
empty folders)

* Maximum number of files and folders: 512

When a file/folder name contains many characters, this number
may become less than 512.

information (track number, time, etc.) is displayed with no sound.

– Audio CD data is played back normally; other data is played back with

no sound. (MP3 file(s) cannot be played back.)

– If no MP3 file is in the disc, “NO Music” is displayed and nothing is

played back. (Audio CD data is not recognized.)

name, input the order by number (e.g., “01,” “02”), then record
contents onto a disc. (The order differs depending on the writing
software.)

be displayed accurately when this unit is connected to a master
unit that does not support MP3. A master unit that supports MP3
is recommended.

About ID3 tag version 2

Although not a malfunction, the following occurs when
an MP3 file containing ID3 tag ver.2 is played:
– When skipping a portion of ID3 tag ver.2 (at the

beginning of the track), sound is not output.
Skip time changes depending ID3 tag ver.2 capacity.
Example: At 64 kbytes, it is about 2 seconds
(with RealJukebox).

– The displayed elapsed playing time when skipping a

portion of ID3 tag ver.2 is inaccurate.
For MP3 files of a bit rate other than 128 kbps, time is
not displayed accurately during playback.

– When an MP3 file is created with MP3 conversion

software (ex. RealJukebox*), ID3 tag ver.2 will
automatically be written.
* “RealJukebox is a registered trademark of

RealNetworks, Inc.”

As of December, 2001

2

.

*

(including root folder and

*

1

level 1 or

3

CDX-757MX

FAQ- about MP3 Audio File

Q1 What is MP3?

MP3 (MPEG Audio Layer3) is a standard
for compressing audio parts of Moving
Pictures Experts Group (MPEG).
The special feature of MP3 is that the music
data is compressed to about 1/10 of its
original size while retaining the same
sound quality as a CD or an MD.
Compared with an audio disc (maximum
74 minutes running time), MP3 lets you
compress about 10 audio discs or 160 four­minute songs into a CD-R/RW of 650MB.

Note

Recorded music is limited to private use only. Use
of music beyond this limit requires the permission
of the copyright holders. Copyright law prohibits
copying, distributing, or delivering all or part of
the contents.

Q2 What kind of MP3 files can be

played back?

MP3 files in CD-ROMs, CD-Rs, and CD­RWs can be played.
Pay attention to the following points when
creating MP3 data CDs using your
computer, CD-R/RW drive, writing
software, or MP3 file.

• The file must be in the ISO 9660 level 1 or
level 2 format, or Joliet or Romeo in the
ISO 9660 expansion format.
A folder name or a file name with the
format other than ISO 9660 level 1 may
not be displayed correctly. When
creating MP3 data CDs, the format of ISO
9660 level 1 is recommended.

• When naming, be sure to add the file
extension “.MP3” to the MP3 file name.
The unit cannot recognize an MP3 file
without the extension “.MP3,” or a file
that is not MP3 format, even with the
extension “.MP3.”

Q3 Is there maximum number of

folders or files to play?

Pay attention to the maximum numbers
mentioned below.

•Maximum folder number in a disc: 255*
(including root folder and empty folders)

•Maximum file number in a disc: 511*
* Maximum number of files and folders:

512
When a file/folder name contains
many characters, this number may
become less than 512.

• The maximum number of trees which
can be played is 8.

The unit allows you to change the folders,
to play just the files in your favorite folder
repeatedly, or to play files randomly, create
folders according to artist name or album,
and put related MP3 files into folders to use
the unit as a CD changer.

ROOT

01_
ALBUM

02_
ALBUM

10_
ALBUM

: Folder

: MP3 file

001TRACK.MP3
002TRACK.MP3

...

010TRACK.MP3

011TRACK.MP3

...

020TRACK.MP3

091TRACK.MP3

...

100TRACK.MP3

Q4 Can the unit play a data CD with

folder levels?

The unit can play a data CD with folder
levels.

Q5 Is there any restriction about the

bit rate regarding playback of
MP3 files?

There is no specific restriction, but a bit rate
of more than 128kbps is recommended
from the perspective of sound quality. The
unit also supports VBR (Variable Bit Rate).

Note

Elapsed playing time may not be displayed
accurately during cue/reverse.

Q6 Does the unit support a disk of

80 minutes running time (700
MB data capacity)?

The unit supports a disk of 80 minutes
running time (700 MB data capacity).

Q7 Can the unit play a CD-R/RW

containing both music CD data
(CD-DA) and MP3 file data?

The first identified file or data will be
played back.

Q8 Can the unit play a disc to which

data can be added (non-finalized
disc)?

The unit can play a non-finalized disc.

Q9 Can the unit play a Multi Session

disc?

The unit can play a Multi Session disc. For
details, refer to the operating instructions.

Q10 Does the unit support Emphasis?

The unit does not support Emphasis.

Q11 What is the sampling rate

supporting the unit?

The unit is supported from 16kHz to
48kHZ.

MPEG1 48kHz 44.1kHz 32kHz

MPEG2 24kHz 22.05kHz 16kHz

Q12 Does the unit support the play

list of m3u?

The unit does not support the play list of
m3u.

Q13 Does the unit support ID3-Tag?

The unit supports ID3 tag ver.1.
Pay attention to the following points about
ID3 tag ver.2.

About ID3 tag version 2

Although not a malfunction, the following occurs
when an MP3 file containing ID3 tag ver.2 is
played:
–When skipping a portion of ID3 tag ver.2 (at the

beginning of the track), sound is not output. Skip
time changes depending ID3 tag ver.2 capacity.
Example: At 64 kbytes, it is about 2 seconds
(with RealJukebox).

– The displayed elapsed playing time when skipping

a portion of ID3 tag ver.2 is inaccurate.
For MP3 files of a bit rate other than 128 kbps, time
is not displayed accurately during playback.

– When an MP3 file is created with MP3 conversion

software (ex. RealJukebox*), ID3 tag ver.2 will
automatically be written.
* “RealJukebox is a registered trademark of

RealNetworks, Inc.”

As of December, 2001

Q14 Is a file name/a folder name of

MP3 different from the name
when creating a data CD (the
name displayed on your
computer)?

On this unit, a file name/a folder name is
displayed as below.

•A file name/a folder name can be
displayed up to 8 characters.

th

or later character cannot be

A 9
displayed or scrolled.

•A folder name or a file name in a format
other than ISO 9660 level 1 may not be
displayed correctly. The file name should
only use one byte uppercase, one byte
numeric characters, or an underscore
(“__”). It should also be no more than 8
characters long, and with no more than
three characters in the extension.

• Japanese phonetic symbols/ Chinese
characters cannot be displayed.
Only one byte uppercase (A-Z), one byte
numeric character (0-9), and one byte

“_”, “.”,

symbol (
can be displayed. One byte lowercase (a­z) is changed to an uppercase character,
and any other characters are displayed as
“*”.

“<”, “>”, “/”, “+”, “*”)

Q15 MP3 files recorded onto a CD-R/

RW cannot be played.

This may happen in following cases.

• The recording method onto CD-R/RW is
the packet write method.

• The extension file is not an “.MP3.”

• The file data is not MP3 format.

• Some recording condition (omission of
data, etc.) or some disc condition (dirt,
crack, curving, etc.) may cause inability
to playback an MP3 file.

Q16 It takes some time to start

playback of MP3 file.

The unit reads the disc information (the
number of folders and files, or the location
of the data) before playback of MP3 file. It
may take more time to start playback of a
disc with many trees.
Please refer to the instruction manual for
details.

Q17 Playback skipping and no

playback occur.

Recording condition onto CD-R/RW
(omission of data, etc.) or disc condition
(dirt, crack, curving, etc.) may cause
playback skipping or no playback.

Q18 Can WAVE files be played back

on this unit?

WAVE files cannot be played back on this
unit.

Q19 Can other compressed formats,

such as ATRAC3, be played back
on the unit?

Only MP3 can be played back on the unit.

4

TABLE OF CONTENTS

SERVICING NOTES .......................................................... 2

1. GENERAL

Installation....................................................................... 6

Connections..................................................................... 7

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 8

2-2. Case (Upper. T), Front Panel Assy ................................. 9

2-3. Mechanism Deck (MG-251B-137)................................. 9

2-4. JACK Board .................................................................... 10

2-5. MAIN Board, Slide Variable Resistor

(Elevator Height Sensor) (RV202) ................................. 10

2-6. ELJ Motor Assy (Elevator) (M104) ................................ 11

2-7. Escutcheon (T) ................................................................ 11

2-8. Chassis (U.S) Sub Assy .................................................. 12

2-9. Chassis Assy.................................................................... 12

2-10. RF Board ......................................................................... 13

2-11. Sled Motor Assy (251) (M101),

Optical Pick-up (KSS-720A) .......................................... 13

2-12. LSW Board, Spindle Motor (S) Sub Assy (M102) ........ 14

2-13. ELJ Motor Assy (Chucking) (M103) ............................. 14

CDX-757MX

3. ASSEMBLY

3-1. Assembly Flow................................................................ 15

3-2. Optical Pick-up Complete Assy...................................... 15

3-3. Gear (Lomini)/(Load 1) Assy ......................................... 16

3-4. Operation Check ............................................................. 16

4. MECHANICAL ADJUSTMENT .......................... 17

5. ELECTRICAL CHECK .......................................... 18

6. DIAGRAMS

6-1. Block Diagram – SERVO Section – .............................. 20

6-2. Block Diagram – MAIN Section (1/2) – ....................... 21

6-3. Block Diagram – MAIN Section (2/2) – ....................... 22

6-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 23

6-5. Printed Wiring Boards – RF/LSW Boards – ................. 24

6-6. Schematic Diagram – RF/LSW Boards –...................... 25

6-7. Printed Wiring Boards

– MAIN Board (Component Side) – .............................. 26

6-8. Printed Wiring Boards

– MAIN (Conductor Side)/SWITCH Boards –.............. 27

6-9. Schematic Diagram – MAIN Board (1/3) – .................. 28

6-10. Schematic Diagram

– MAIN (2/3)/SWITCH Boards – .................................. 29

6-11. Schematic Diagram – MAIN Board (3/3) – .................. 30

6-12. Printed Wiring Boards – JACK Board –........................ 32

6-13. Schematic Diagram – JACK Board – ............................. 33

6-14. IC Pin Function Description ........................................... 39

7. EXPLODED VIEWS

7-1. Case Section .................................................................... 41

7-2. Mechanism Deck Section-1 (MG-251B-137) ................ 42

7-3. Mechanism Deck Section-2 (MG-251B-137) ................ 43

7-4. Mechanism Deck Section-3 (MG-251B-137) ................ 44

7-5. Mechanism Deck Section-4 (MG-251B-137) ................ 45

8. ELECTRICAL PARTS LIST ............................... 46

5

CDX-757MX

SECTION 1

GENERAL

This section is extracted from
instruction manual.

InstallationInstallation

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 ¿ 3.5 mm (

nothing on the 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

Horizontal installation

1

HORIZONTAL

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 garée 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 (

qu'il n'y avait 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.)¿ qu'après vous être assuré

Installation horizontale

2

Align with the marked position.
Aligner sur le repère.

Unit: mm (in.)
Unité : mm (po.)

3

2

1

5

/32)

¿ 3.5 (

3

2

1

Vertical installation Installation verticale

1

Align with the marked position.

VERTICAL

Aligner sur le repère.

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

¿ 3.5 (5/32)

1

2

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

1

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

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.

2

Unit: mm (in.)
Unité : mm (po.)

3

2

1

¿ 3.5 (5/32)

3

2

1

2

3

3

V
ER

T
I
CA

L

L

TA
N
ZO
I
R
HO

Note

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

6

L

A
T
N

O
Z

I
R
O

V

H

E
R
T

I
C
A
L

Remarque

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

L

A
T
N

O

Z
I
R

O

V

H

E
R
T
I
C
A
L

Connections/Connexions

CDX-757MX

Connection diagram/Schéma de connexion

Sony BUS compatible car audio
Autoradio compatible BUS Sony

BUS AUDIO IN BUS CONTROL IN

45

CDX-757MX

Inserting a disc/Insertion d’un disque

1

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

c

Tab
Onglet

Labeled surface up
Etiquette vers le haut

10 discs, one in each tray
10 disques, un par plateau

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.

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)
est nécessaire.

Note

You cannot play 8cm (3 in.) CDs.

Remarque

Vous ne pouvez pas écouter de CD de 8 cm (3po.) sur ce lecteur.

Use the supplied disc magazine or the disc
magazine XA-250.The disc magazine XA-10B/XA­350 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/XA-350 avec cet appareil.
L'utilisation d'un autre type de magasin à disques
risque de provoquer un dysfonctionnement.

2

Push to unlock the door
Poussez pour déverrouiller la porte

c

3

Disc magazine
Chargeur de disques

4

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.

To remove
Retrait

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
l’appareil et encrasser les lentilles dans le lecteur.

Slide open
Coulissez pour ouvrir

Z (EJECT)

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.

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.

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.

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. The unit firstly reads all of the disc information in the disc magazine. Depending on
the recording method, it may take some time to stop the operation even if you set the ignition key to OFF during disc reading. This is
not a malfunction.

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. L’appareil commence par lire toutes les informations relatives au disque dans le chargeur de
disque. Selon la méthode d’enregistrement, l’arrêt de l’opération peut demander quelques instants avant de s’arrêter si vous tournez
la clé de contact sur OFF au cours de la lecture du disque. Il ne s’agit pas d’un dysfonctionnement.

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.

7

CDX-757MX

SECTION 2

DISASSEMBLY

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

2-1. 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

2-2. CASE (UPPER.T),

FRONT PANEL ASSY
(Page 9)

2-3. MECHANISM DECK

(MG-251B-137)
(Page 9)

2-4. JACK BOARD

(Page 10)

2-5. MAIN BOARD,

SLIDE VARIABLE RESISTOR
(ELEVATOR HEIGHT SENSOR) (RV202)
(Page 10)

2-6. ELJ MOTOR ASSY

(ELEVATOR) (M104)
(Page 11)

2-9. CHASSIS ASSY

2-10. RF BOARD

2-11. SLED MOTOR ASSY (251) (M101),

2-12. LSW BOARD,

2-7. ESCUTCHEON (T)

(Page 11)

2-8. CHASSIS (U.S) SUB ASSY

(Page 12)

(Page 12)

(Page 13)

OPTICAL PICK-UP (KSS-720A)
(Page 13)

SPINDLE MOTOR (S) SUB ASSY (M102)
(Page 14)

2-13. ELJ MOTOR ASSY (CHUCKING) (M103)

(Page 14)

8

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

3

screw
(PTT2.6

×

6)

4

lever (FLT. 838)

3

screw (PTT2.6 × 6)

3

screw (PTT2.6 × 6)

1

screw (PTT2.6 × 6)

1

screw
(PTT2.6

×

6)

2

front panel assy

4

lever (FLT. 838)

5

case (upper. T)

)

)

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

CDX-757MX

2-3. MECHANISM DECK (MG-251B-137)

2

tension coil spring (FL)

1

two dampers (T)

filament tape

3

jack flexible board
(CNJ901)

4

mechanism deck (MG-251B-137)

2

tension coil spring (FL

1

two dampers (T

9

CDX-757MX

2-4. JACK BOARD

Remove the jack board of
the arrow.

1

ground point screw
(PTT2.6

×

6)

2

jack board

2-5. MAIN BOARD , SLIDE V ARIABLE RESIST OR (ELEV A T OR HEIGHT SENSOR) (RV202)

1

main flexible board

2

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

5

screw (FP)

(CNJ101)

5

two screws (FP)

6

main board

2

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

2

Remove two solders of
the switch board leads.

10

7

screw
(PTT2

×

4)

8

slide variable resistor
(elevator height sensor)
(RV202)

4

heat sink (T)

3

screw (PTT2 × 4)

2-6. ELJ MOTOR ASSY (ELEVATOR) (M104)

1

2

bracket (EVM.S)

screw
(PTT2

CDX-757MX

×

4)

3

ELJ motor assy (elevator) (M104)

2-7. 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)

11

CDX-757MX

2-8. 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.

1

two screws
(PTT2 × 4)

2-9. CHASSIS ASSY

5

1

screw
(PTT2 × 4)

spring (stopper.lower)

4

spring (SUT)

6

chassis assy

4

12

1

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

3

2

A

3

2-10. RF BOARD

3

two screws
(PS2

CDX-757MX

×

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).

2-11. 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

3

optical pick-up
(KSS-720A)

optical
pick-up

Note: After connecting OP flexible board,

fix it with adhesive sheet
to optical pick-up.

13

CDX-757MX

)

w

2-12. LSW BOARD, SPINDLE MOTOR (S) SUB ASSY (M102)

8

two precision screws
(P1.7

×

2.2)

7

1

precision screw
(P2

×

2.5)

5

bracket (CP)

spring (chucking)

3

6

retainer (disc

4

precision scre
(P2 × 2.2)

2

LSW board

2-13. 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)

14

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

)

3-1. ASSEMBLY FLOW

3-2. OPTICAL PICK-UP COMPLETE ASSY

(Page 15)

3-3. GEAR (LOMINI) / (LOAD 1) ASSY

(Page 16)

3-4. OPERATION CHECK

(Page 16)

CDX-757MX
SECTION 3
ASSEMBLY

3-2. OPTICAL PICK-UP COMPLETE ASSY

1

chuck plate

Move the lever (LOCK 3A) in the direction of arrow A,
and return it a little in the direction of arrow
from the position where the chuck plate is moved
down to the lower limit.

B

A

B

3

stop ring 2.0 (E type

4

tension spring (DH)

shaft (A)

2

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

15

CDX-757MX

3-3. GEAR (LOMINI)/(LOAD 1) ASSY

gear (LOAD 2)

marking
Fig. A

3

Attach the gear (LOAD 1) 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

stop ring 1.5 (E type)

4

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

B

3-4. OPERATION CHECK

1

Confirm that the slider moves in the direction of arrow C to move down
the chuck plate if the gear (LOAD 1) is rotated in the direction of arrow
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

A

slider

D

C

16

A

gear (LOAD 1) assy

B

MECHANICAL ADJUSTMENT

• Elevator Height (Address) Adjustment

CDX-757MX
SECTION 4

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), 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

RV201

17

CDX-757MX

SECTION 5

ELECTRICAL CHECK

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.

4. Use a master unit that supports SONY bus system.

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.

18

TRACKING OFFSET CHECK

Connection:

– RF Board (Component Side) –

oscilloscope

(DC range)

CDX-757MX

+

–

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

A=B

traverse waveform
(100 track jump waveform)

1919

CDX-757MX

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – SERVO Section –

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

VC

(SLED)

(SPINDLE)

M103

(CHUHCKING)

RF AMP,

FOCUS/TRACKING ERROR AMP

A

6

B

7

C

8

D

9

E

10

F

11

AUTOMATIC

POWER

CONTROL

Q101

M101

M102

IC101

RFAC

SUMMING

AMP

SUMMING

FOCUS
ERROR

AMP

TRACKING

ERROR

1

27

TRACKING/FOCUS COIL DRIVE,

8
9

6
7

10

MM

11

12

MM

13

5

MM

4

AC

SUM

4 3

RFDC

AMP

DC OFST

RW/ROM

AMP

RW/ROM

SW

LD

VC

SLED/SPINDLE/CHUCKING

MOTOR DRIVE

VO3 +
VO3 –

VO4 +
VO4 –

VO2 +
VO2 –

VO1 +
VO1 –

VL0 +
VL0 –

APC AMP

IC201

MOTOR

COIL

DRIVE

DRIVE

COIL

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

PD

DVC

VIN3 +
VIN3 –

VIN4 +
VIN4 –

VIN2 +
VIN2 –

VIN1-B

FWD

RFDCO

12

2

14

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

5963

CE

VC

PWM GENERATOR

DIGITAL

CLV

RFDC

OP AMP

ANALOG SW

A/D CONVERTER

SERVO DSP

71

73
74

DQ1 – DQ4

A0 – A10

RAS
CAS

WE

OE

FE

TE

FE

TE

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

DAC

SELECTOR

CLOCK

GENERATOR

D201

DOUT

1585

PCMDI

1589

PCMD

15

88

1588

BCK

15

90

LRCK

15

86

XTAI

1593

XTAO

1594

CD-ROM/RW

SELECT SWITCH

Q202

X101

16.9344MHz

R/RW SEL

90

GRSCOR

40

GFS

5

CDDAT

10

CDCLK

8

CDLAT

9

SENS

7

SQSO

84

SQCK

85

SCOR

38

XRDE

16

XWRE

17

XQOK

15

SYSTEM CONTROLLER

IC201 (1/3)

SCLK

6

FOK

4

XRST

11

LOADF

95

LOADR

96

LIM SW

100

LOAD SW

98

SAVE SW

99

SDO

SDI

BCK

LRCK

XTAL-IN

TCXRDE

(Page 21)

B

(Page 21)

A

(Page 21)

C

(Page 21)

D

SIGNAL PATH

: CD PLAY

2020

6-2. BLOCK DIAGRAM – MAIN Section (1/2) –

2
1
3

MD
MC
ML

13
14
15

DATA
BCK
LRCK

MD
MC
ML

SERIAL

INPUT

INTERFACE

FUNCTION
CONTROL

INTERFACE

8 TIME OVER

SAMPLING

DIGITAL FILTER

WITH

FUNCTION

CONTROLLER

ENHANCED

MULTI-LEVEL

DELATA-SIGMA

MODULATOR

D/A

CONVERTER

OUTPUT AMP

AND

LOW-PASS

FILTER

VOUTL

VCOM

VOUTR

CDX-757MX

SIGNAL PATH

: CD PLAY

7

CN901 (1/2)

10

8

LOW-PASS

FILTER

IC401

L

R

AUDIO OUT

(Page 20)

(Page 20)

(Page 20)

(Page 20)

16

SDO

B

IC605

SDI

BCK

A

LRCK

XTAL-IN

C

TCXRDE

D

ML

MC

MD

CLOCK

MANAGER

9 SDO

12 SDIO

13 BCKIA

14 LRCKIA

62 X1
63 X0

60 XRDE

CD-ROM DECODER

REQ19STANBY1RESET5I2C SDA6I2C SCL

39

SYSTEM

SCK

SYSTEM

CLOCK

MP3 DECODER

IC601

IC604

AD16

−

AD0

51,

−

55

IO7

−

−

53

IO0

46, 47, 49

31, 41,

−

42, 45, 44

36, 34

−

3, 4, 7, 10, 11, 15,

38

16CE
43WR
17OE

DIGITAL FILTER,

D/A CONVERTER

IC501

29

−

IO8

−

23, 25

IO1

−

21

A16

−

A0

13, 3, 2, 31, 1,

−

12, 4, 11, 7, 10

20

30 CS1

5WE

32 OE

S-RAM

IC602

MUTING

Q410, 420

MUTING

CONTROL

SWITCH

Q402

18

DAC-DATA

19

DAC-CLK

20

DAC-LAT

73

DECINT

3

DECSTBY

2

DECXRST

80

SDA

81

SCL

SYSTEM CONTROLLER

IC201 (2/3)

26

MUTE

31PCTX

32PCRX

68FL BOOT

4

3

2

CN201

(FOR PC)

2121

CDX-757MX

RESET

SWITCH

7

DATA

CLK

BUSON

RST

5

4

6

2

B. UP

CONTROL

CN901 (2/2)

52

MCK

50

EHS

53

VREF

EVON

RV201

ELEVATOR HEIGHT

(ADDRESS)

RV202

ELEVATOR HEIGHT

SENSOR

30

+8V

REGULATOR

IC304

DRIVER +8V

BUCHK

92

BATTERY

CHECK

Q301, 302

D306

59

CDON

29

EJECT

75

B. UP +3.3V

BUS INTERFACE

(FOR SONY BUS)

IC302

+5V

REGULATOR

IC305

+3.3V

REGULATOR

Q303, 304

SERVO +5V

SW801

72

MGLK-SW

36

ELVF

37

ELVR

SW201

MAGAZINE

DETECT

ON : When magazine
is set

3
4

9
7

MOTOR

DRIVE

IN1
IN2

OUT1
OUT2

ELEVATOR

MOTOR DRIVE

IC301

M

M104

(ELEVATOR)

SYSTEM CONTROLLER

IC201 (3/3)

RES

10 6

9

11 4

1 12

13 2

8 7

SO

SI

SCK

BUSON OUT

BUSON OUT

RESET

DATA

14

CLK

LOF

BUSON IN

RST

77

76

78

91

65

SI

SO

SCLK

BUSON

VCC

RESET SIGNAL

GENERATOR

IC303

PS901

79
82

EEDATA
EECLK

5
6

SDA
SCL

EEPROM

IC202

+3.3V

REGULATOR

IC306

SERVO +3.3V

EXTAL

63

XTAL

X201

12.288MHz

+2.5V

REGULATOR

IC603

CD-ROM/MP3

DECODER

(IC601)

B+

6-3. BLOCK DIAGRAM – MAIN Section (2/2) –

2222

CDX-757MX

d

6-4. 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 parts 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.

• A : B+ Line.

• H : adjustment for repair.

•Power voltage is dc 14.4V and f ed with regulated dc power

•Voltages and waveforms are dc with respect to ground in

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

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: internal component.

Note:

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

supply from CD changer controller.
CD play 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

Note:

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.

• Circuit Boards Location

W or less unless otherwise

JACK board

MAIN board

SWITCH board

RF boar

LSW board

2323

CDX-757MX

6-5. PRINTED WIRING BOARDS – RF/LSW Boards – • See page 23 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

R220

R104

C106

R106

C209

R215

R218

R219

C202

IC201

A

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

MAIN BOARD

CN101

J

(Page 26)

LSW BOARD

BLU

K

(LIMIT)

YEL

R102

IC101

TP

(TE)

R107

C109

R108

R216

R109

C103

R110

C111

Q101

C101

R117

C102

R105

R111

R122

R113

R116

TP107

TP108

TP102

TP101

R101

Q102

R121

C108

R120

R112

1-679-421-

C104

C122

YEL

BLU

BLK

RED

(12)

M102

M

(SPINDLE)

12

C121

C105

C201

1-679-421-

12

(12)

2424

6-6. SCHEMATIC DIAGRAM – RF/LSW Boards – • See page 31 for for Waveforms. • See page 34 for IC Block Diagrams.

Q101

MSB709

-RT1

Q102

MUN2212T1

CDX-757MX

MAIN

BOARD

CN101

(1/3)

(Page 28)

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

2525

Replace only with part number specified.

Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.

CDX-757MX

6-7. PRINTED WIRING BOARDS – MAIN Board (Component Side) – • See page 23 for Circuit Boards Location.

• Semiconductor
Location

Ref. No. Location

D201 E-9
D301 E-2
D302 E-2
D303 E-1
D306 F-5
D310 F-4

IC101 C-9
IC102 D-8
IC201 F-9
IC202 F-11
IC301 G-3
IC302 F-1
IC303 G-3
IC306 A-9
IC401 C-4
IC501 B-6
IC601 C-6
IC602 E-6
IC603 F-6
IC604 F-8
IC605 B-7

Q202 E-11
Q301 F-5
Q302 F-5
Q303 G-4
Q304 G-4
Q402 E-4
Q410 D-2
Q420 D-3

1 2 3 4 5 6 7 8 9 10 11 12

MAIN BOARD

A

(COMPONENT SIDE)

135

IC306

4

IC605

B

IC501

90 61

91

60

26

IC101

C

IC401

D

113

32

33

IC601

48

49 64

E

IC302

F

IC603

17

IC602

31

45

16

120

130

1

IC102

25 1

45

31

IC604

26

50

51 75

31

IC201

100

1

MAIN FLEXIBLE BOARD

A

RF BOARD

CNJ101

(Page 24)

IC202

76

IC303

G

IC301

SW201

MAGAZINE

DETECT

H

JACK FLEXIBLE BOARD

B

JACK BOARD

CNJ901

I

J

K

(Page 32)

11

1-684-649-

(11)

2626

6-8. PRINTED WIRING BOARDS – MAIN (Conductor Side)/SWITCH Boards – • See page 23 for Circuit Boards Location.

CDX-757MX

A

B

C

D

1 2 3 4 5 6 7 8 9 10 11 12

MAIN BOARD

(CHASSIS)

(CONDUCTOR SIDE)

BP121

BP122

• Semiconductor
Location

Ref. No. Location

IC304 H-12
IC305 E-12

E

F

G

H

I

J

(CHASSIS)

BP201

RV202

ELEVATOR

HEIGHT

SENSOR

BP302

BP301

TP304

RED

M104

(ELEVATOR)

M

TP303

BLK

TP302

TP301

YEL

BLU

SWITCH BOARD

(CHASSIS)

YEL

BLU

11

(11)

1-684-651-

IC305

IC304

1-684-649-

11

(11)

6

(FOR PC)

K

2727

CDX-757MX

6-9. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 31 for for Waveforms. • See page 34 for IC Block Diagram.

(1/3)

MAIN

FLEXIBLE

BOARD

(Page 25)

CN101

GND

GND

+8V

+8V

MDP

SRDR

SFDR

TRDR

TFDR

FFDR

FRDR

CH.R

CH.F

LIM.SW

SAVE

LOAD

SW

VC

FE

TE

RF

RFAC

+5V

+3.3V

GND

GND

TP102

TP104

TP106

TP108

TP110

TP112

TP114

TP116

TP118

TP120

TP122

TP101

TP103

TP105

TP107

TP109

TP111

TP113

TP115

TP117

TP119

TP121

TP123

SRDR

SFDR

TRDR

FRDR

SAVE

XLAT

SCLK

CLOK

SENS

FOK

C101

0.1

MDP

BP121

BP122

R123
100k

0.01

TP125

TP126

C01

R122

33k

R125

33k

C121
220p

C122
220p

C123

0.1

C102

0.1

C103

0.1

TFDR

FFDR

REV

FWD

LIM

LOAD

SW

MDP

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

R101

33k

C105

0.047

0.0033

R102R108

10k470k

1

C115

R109

1M

0.0015

R116

XRST

DATA

1k

C114

0.1

R104

3.3k

R103

3.3k

C110

C106

C104

1

C107
220p

C108

0.1

SQCK

SCOR

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

IC101

CXD3027R

R107

10k

R106
470k

R105
820k

C109

0.01

SQSO

A1

RE

XRDE

XQOK

XW

A9

A8

A7

A6

A5

A4

D0

D1 D2

XWE

XRAS

XOE

XCAS

XWE

XRAS

A10

16.9344MHz

R114

100

R113

R112

100

DATA

BCK

C111

0.1

GFSGRSCOR

LRCK

100

A10

A0

D2

A1

D3

A2

D0

A3

D1

A0

A1

A2

A3

C113

0.1

C161

0.1

R111
330

X101

C112

0.1

IC102

GM71VS17403CLT-6

D-RAM

R110

220

D3

XCAS

XOE

A9

A8

A7

A6

A5

A4

C162

0.1

A2

(Page 29)

A3

A4

A5

A6

A7

A8

A10

3

B1

B2

B

5

B6

B

B4

(Page 30)

2828

6-10. SCHEMATIC DIAGRAM – MAIN (2/3)/SWITCH Boards – • See page 31 for for Waveforms. • See page 34 for IC Block Diagrams.

CDX-757MX

(2/3)

A1

IC602

W24L010AT-

A11

RB604

A9

A8

A13

WR2

A15

A16

A14

A12

100k

A7

X4

A6

A5

A4

100k

X4

C608

0.1

C606

0.1

IO6

IO7

270

R608

C607

0.33

R607

270

2

5

IO

IO3

IO4

IO

G

R115

A2

A3

100

C604

10

C614

0.1

16V 1k

SCL

TC-XRDE

C601

0.1

V

R613

C610

0.1

GATE SWITCH

V

IC605

TC7SH08FU

-TE85R

GATE SWITCH

G

IC604

TC7SH08FU

-TE85R

C616

47p

0.001

C609

R612

150

R610

1M

12-EL15

A11

OE

A9

A10

CS1

A8

A13

IO8

WE

IO7

CS2

IO6

A15

IO5

IO4

VDD

GND

NC

IO3

A16

IO2

A14

IO1

A12

A7

A0

A6

A1

A5

A2

A4

A3

S-RAM

RB602RB603
100k

X4

OE

A10

CE

IO7

IO6

IO5

IO4

IO3

IO2

IO1

IO0

A0

A1

A2

A3

EJECT

IC301

LB1930M-TLM

REV

FWD

ELEVATOR MOTOR DRIVE

C301

0.1

Q302

BUCHK

DTA115EKA-T146

R304

1M

Q301

MSD601-RT1

R302 C307 R307
470k 0.01 91k

Q301,302

BATTERY

CHECK

C302 C303

0.1 0.1

R303
100k

D306

MM3Z6V8ST1

TP321 TP323

BP301

D303

MM3Z18VST1

MSD601-RT1

R311
100k

D301

RB481YT2R

2SB1184-TLR

Q304

MM3Z5V1ST1

TP322

Q303

R306
47k

R310

27k

D310

IC302

BUS INTERFACE

(FOR SONY BUS)

VIN

NCGND

C309

0.1

BA8272AFV-E2

RESET

SI

SO

SCK

LOF

BUSON
OUT
VCC

C310
2200

6.3V

BUSON

BUSON

RST

DATA

VREF

CLK

GND

IN

OUT

Q303,304

+3.3V REGULATOR

16V

5.5V

100

0.1

C311

C316

C312

0.1

RST

SO

SI

SCK

BUSON

0.1

C304

ST
R

R305
100k

RESET SIGNAL

GENERATOR

IC303

XC61CN2702NR

VOUT

BP302

D302

MM3Z18VST1

TP324

0.001

C305

0.0047

TP301

EJECT

TP302

GND

TP303
ELV-

TP304

ELV+

C306

R301

47k

M104

(ELEVATOR)

(CHASSIS)

TP802

TP801

TP311

TP313

TP306

TP308

TP310

TP312

TP305

TP307

TP309

SW801

BUSON

(CHASSIS)

CN301

CLK

RST

DATA

GND

GND

GND

B.UP

LCH

AGND

RCH

JACK

FLEXIBLE

BOARD

(Page 33)

(Page 28)

X1

R601

1k

DECXRST

A0

A1

SDA

A2

R603

100

A4

A5

A6

A7

C615

A8

A10

A3

A4

A5

CE

RB601

100k

0.1

X0

VSSX

RESET

MIMD

AD0

AD1

I2C_SDA

I2C_SCL

AD2

VDDT(3.3V)

SDO

AD3

AD4

SDI0

BCKIA

LRCKIA

AD5

CE

C602

E
O

DECSTBY DECINT

XRDE

VDDX(2.5V)

STANBY

VSSL(2.5GND)

VDD(2.5V)

VSS(2.5GND)

OE

PDO

VCOI

VDDP

CD-ROM DECODER,

MP3 DECODER

IC601

CXD9684R-004

LO

VRAL

VDAL(2.5V)

TP601 TP602

VSSP

VDAR(2.5V)

C612C603

0.10.10.1

IO7

IO6

IO5

IO3

IO2

IO4

VDD(2.5V)

VRAR

TESTP

RO

VSSR(2.5GND)

VSS

IO1

IO0

AD15

AD16

WR

AD14

AD13

VSS

REQ

AD6

AD7

AD8

VDDT(3.3V)

AD9

AD10

AD11

AD12

CKS

+2.5V REGULATOR

IC603

RN5RZ25BA-TL

REG

GNDNCCE

12
A

A11

IO1

IO0

A15

A16

WR2

R602

A14

100k

A13

A6

C605

A7

A10

O

V

C611

0.1

0.1

A8

A9

C313

100
16V

C505

100

C403 C404

0.001 0.001

16V 220p10k

OGCI

REG

+8V REGULATOR

C314

0.1

N

EVO

LOW-PASS

FILTER

IC401

TLV2362IPWR

R412

R402

1000

16V

C405R403R411
220p10k150k

10k10k

R405R401

VCC

GND

150k

10k

R406

10k

C406R404

I

+3.3V REGULATOR

O

G

IC306

RH5RL33AA-T1

C319C315

22

6.3V

C613

0.1

C408

0.1

C407

100
16V

C409

47

R413

100

16V

R415C411

C401

0.1

C410

47

16V 100

100k100p

R416

C412

100k

100p

R414

REG

ON

CD

TE
U
M

Q420

DTC314TK

-T-146
MUTING

Q410

DTC314TK

-T-146
MUTING

OGCI

+5V REGULATOR

NJM2396F05NJM2396F08

Q402

MUN2111T1

MUTING CONTROL

SWITCH

IC305IC304

C318C317

0.10.1

C1

C3

C4

C5

C6

C7

C8

C9

(Page 30)

2929

CDX-757MX

6-11. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 31 for for Waveforms. • See page 34 for IC Block Diagram.

B1

(3/3)

D201

M1MA152WK-T1

R202 C201
100k 0.1

TC-XRDE

XRDE

MD

MC

(FOR PC)

CN201

6P

RESET

PCTX

PCRX

FL_BOOT

+B

GND

TP209

TP207

TP210

TP208

ML

L

AG

-SW

M

T_SE
U

MUTE

O
D

R201
100k

100k

100k

R206

R211

SCOR

GRSCOR

CDON

EVON

FWD

REV

NC

NC

CDON

EVON

PCTX

PCRX

NC

NC

ELVF

ELVR

SCOR

NC

GRSCOR

NC

AVSS

NCI

NCI

NCI

NCI

NCI

NCI

NCI

EHS

K

I

C

C

M

N

T

EL

EL

S

-LA

FS

TSEL

C

C

ESP

A

TEX

D

C

VC

MD1

MD0

A

Vref

XQOK

XWRE

XRDE

XWRE

SYSTEM CONTROLLER

I
M

ES

N

R

XQOK

HD6432238R

WN21TEIV

TBY
S

SS

NC

V

IC201

L

VCC

XTA

TA

LK

A

-C

-D

AC

AC

D

D

1
C

C2

S

S

O

O

CLOK

XLAT

DATA

XRST

T

T
A

CC

LA

V

D

XRST

C

CD

CD

L

E

TA

S

VS

EX

MD2

FW

FOK

GFS

SCLK

SENS

K

CL

SENS

D
C

T
O

BO

L_W

FL_

F

SCLK

C
N

DECXRST

DECSTBY

K

FS
G

FO

TEST

LIM_SW

DECXRST

DECSTBY

SAVE_SW

LOAD_SW

SINGLE

LOADR

LOADF

NC

NC

BUCHKNC

BUSON

R/RW_SEL

NC

NC

NC

NC

SQCK

SQSO

NC

EECLK

SCL

SDA

EEDATA

SCLK

W

-S

LK
G

C

M

N

SI

SO

T

IN

C

EC

N

EJECT

D

(Page 28)

B2

LIMMUTE

SAVE

LOAD

REV

FWD

BUCHK

BUSON

SQCK

SQSO

R210R212

10k1k

B3

R215

1k

BP201

SW

Q202

MUN2211T1

CD-ROM/

RW SELECT

SWITCH

SCL

SDA

SCK

SI

SO

IC202

BR24C16FJ-E2

SCL

VSS

VCC

EEPROM

VSSSDA

S2

S1

SO

B4

C1

C4

C3

R501

220

DIGITAL FILTER,

D/A CONVERTER

C501

0.1

BCK

C502

47

16V

C503

0.1

C504

47

16V

DATA

LRCK

IC501

PCM1748E/2K

BCK

DATA

LRCK

DGND

VDD

VCC

VOUTL

VOUTR

ZEROL

ZEROR

SCK

ML

MC

MD

VCOM

AGND

ML

MC

MD

C7

C6

C8

C9

(Page 29)

B6

B5

RV202

ELEVATOR HEIGHT

SENSOR

R204

0

RV202 C202 C203

10k 0.1 0.1

RV201

TP203

C204

0.1

R207 C205

1k 0.1

RST

R203
100k

EJECT

R208R209
100k470k

SW201

MAGAZINE

DETECT

201

X201

12.288MHz47k

SW

TP211

DECINT

C206

0.1

C5

3030

•Waveforms
– RF Board –

CDX-757MX

– MAIN Board –

1 IC101 qh (FE)

2 IC101 qk (TE)

3 IC101 qg (RFAC)

Approx.
100 mVp-p

Approx.
250 mVp-p

1 IC101 rd (MDP)

µ

s

3.8

2 IC101 ih (LRCK), ij (LRCKI)

µ

s

22.7

3 IC101 o; (BCK), oz (BCKI)

2 Vp-p

4.5 Vp-p

6 IC601 qf (LRCKIA)

22.7

µ

s

7 IC601 ys (X1)

59.1 ns

8 IC201 yg (EXTAL)

4.5 Vp-p

5 Vp-p

qa IC501 qh (SCK)

5 Vp-p

59.1 ns

1.4 ± 0.3
Vp-p

472 ns

4 IC101 of (XTAO)

59.1 ns

5 IC601 qd (BCKIA)

4.5 Vp-p

5 Vp-p

2.2 Vp-p

81.4 ns

9 IC501 1 (BCK)

4.5 Vp-p

472 ns

0 IC501 3 (LRCK)

472 ns

4.5 Vp-p

22.7

4.5 Vp-p

µ

s

3131

CDX-757MX

6-12. PRINTED WIRING BOARDS – JACK Board – • See page 23 for Circuit Boards Location.

JACK BOARD

(COMPONENT SIDE)

JACK FLEXIBLE BOARD

B

MAIN BOARD

CN301

(Page 26)

1-684-650-

11

(11)

JACK BOARD

(CONDUCTOR SIDE)

6

8

3

5

1

7

2

4

CONTROL

(FOR SONY BUS)

5 4

6

7

8

2 13

R

AUDIO OUT

L

CN901

1-684-650-

11

(11)

3232

C904

D901

FB901

FB902

FB903

C901 C902

TP906

TP907

TP908

TP909

TP905

TP904

TP903

TP902

TP901

CN901

CNJ901

PS901

100p

STZ6.8N

-T146

0.001 0.1

13P

5A

24V

RST

CLK

DATA

BUSON

GND

SIRCS

B.UP

L

R

CLK

RST

DATA

BUSON

GND

GND

GND

B.UP

B.UP

B.UP

LCH

AGND

RCH

NC

JACK

FLEXIBLE

BOARD

CONTROL

L

R

AUDIO OUT

(FOR SONY BUS)

6-13. SCHEMATIC DIAGRAM – JACK Board –

(Page 29)

CDX-757MX

33

CDX-757MX

• IC Block Diagrams
– RF Board –

IC101 CXA2581N-T4

DVC

VC

–
+

VOFST

RW/ROM

DC OFST

30

RFDCI

A

B

C

D

DVC

–
+

RW/ROM

–
+

DVC
VCC

29

RFDCO

28

VC

VC

27

EQ IN

AC SUM

GND

SW

DVCC

DVC

RFAC

APC AMP

DVC

VC

A
B
C

D

APC-OFF

(Hi-Z)

RW/ROM

(H/L)

SUMMING

BCD

A

GM

GM

RFAC

AMP

RFC

EQ

EQ ON/OFF

RW/ROM

B
C

A

D

B

D

A

C

VOFST
–
+

RW/ROM

RW/ROM

–
+

RW/ROM

RW/ROM

VOFST
–

+

RW/ROM

RFAC

VCA

VCC

–
+

DVC

VC

VC

–
+

DVC

VC

26

VFC

25

BST

24

RFG

23

VCC

22

CEI

21

CE

20

19

TE BAL

18

TE

17

FEI

16

FE

LD

1

PD

2

3

4

5

6

A

7

B

8

C

9

D

10

E

11

F

12

13

14

15

34

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-757MX

VIN1–A

VIN1+A

VIN1–B

16

–

AMP-A

+

17

–

18

AMP-B

+

35

CDX-757MX

– MAIN Board –

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

LOUT2

AVDD2

LOUT2

AIN2

AIN2

AOUT2

AOUT2

AVSS2

AVSS2

AVSS1

AVSS1

AOUT1

AOUT1

AIN1

AIN1

LOUT1

LOUT1

AVDD1

XVSS

AVDD1

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

SELECTOR

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

DFCT
MIRR

TRDR

SRDR

FOK

FRDR
FFDR

TFDR

SFDR

BCK

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

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

E
F
B
A

PLL

DIGITAL

CLV

CPU

INTERFACE

SERVO BLOCK

OP AMP

ANALOG SWITCH

36

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

MDP

C176

MDP

MDS

MDS

SSTP

SSTP

SFDR

SFDR

SRDR

SRDR

TFDR

TFDR

TRDR

TRDR

FFDR

FFDR

FRDR

FRDR

VSS1

VSS1

TEST

TES1

A VDD

IGEN

AVDD0

AVDD0

AVSS0

IGEN

A GND

RFDC

AVSS0

E

E

RFDC

F

F

IC301 LB1930M-TLM

VCC

1

BUFFER

NC

2

IN1

IN2

S-GND

3

4

BUFFER

5

CONTROL

CIRCUIT

IC302 BA8272AFV-E2

MOTOR

DRIVE

CIRCUIT

CDX-757MX

NC

10

OUT1

9
8

NC

7

OUT2

P-GND

6

VCC

BUS ON

LINK OFF

CLK OUT

DATA OUT

10

GND

BUS ON IN

11

5 6 7

4

VREF

BUS CLK

BUS DATA

14 13 12

2 3

1

BUS ON OUT

IC501 PCM1748E/2K

SCK

16

SYSTEM

CLOCK

MANAGER

SYSTEM

CLOCK

ML

MC

15

14

13

FUNCTION
CONTROL

INTERFACE

SERIAL

INPUT

INTERFACE

MD

RESET

DATA IN

89

RESET

SWITCH

BUS RESET

ZEROL

12

11

ZERO DETECT

8 TIME OVER

SAMPLING

DIGITAL FILTER

WITH

FUNCTION

CONTROLLER

ZEROR

ENHANCED

MULTI-LEVEL

DELTA-SIGMA

MODULATOR

D/A

CONVERTER

D/A

CONVERTER

OUTPUT AMP AND
LOW-PASS FILTER

OUTPUT AMP AND
LOW-PASS FILTER

10

VCOM

AGND

9

1 2 3

BCK

DATA

LRCK

POWER SUPPLY

VDD

DGND

VCC

7 84 5 6

VOUTL

VOUTR

37

CDX-757MX

IC601 CXD9684R-004

AD11

31

32

29

30

27

28

25

26

23

24

21

22

19

20

17

18

OE

VDD

STANDBY

VSS

VSSL

VRAL

LO

VDAL

VDAR

RO

VRAR

VSSR

TESTP

CKS

AD12

AD10

AD9

VDDT

AD8

AD7

AD6

REQ

VSS

AD13

AD14

WR

AD16

AD15

IO0

IO1

Y-BUS

DACDAC

REGISTER

X0 X1 X2
Y0 Y1 Y2

PROM

4kx2+2k

=10k WORD

IINSTRUCTION

DECODER

ROUND & LIMIT

AY
AX

MZ

MY

MX

ROUND & LIMIT

256 WORD

40 BIT

ALU

MAC

PRAM

PROGRAM

CONTROL

A3

A2

AUDIO

I/F

A1

A0

MICROCOM.

I/F

33

BUS

34

35

36

37

38

39

40

41

42

43

44

45

46

47

GENERAL

OUTPUT

PORT

FLAG

TIMER

INTERRUPT

CONTROL

SRAM I/F

I-BUS

ADDRESS

CALC.

2 SETS

ERAM

2k WORD

CROM

4k WORD

YRAM

4k WORD

XRAM

4k WORD

x3

C-POINTER
REGISTER

Y-POINTER
REGISTER

X-POINTER
REGISTER

SWITCH

X-BUS

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

CE

AD5

LRCKIA

BCKIA

SDI0

AD4

AD3

SDO

VDDT

AD2

MICK

MIDIO

AD1

AD0

MIMD

38

VSS

48

49

IO2

50

IO3

GENERAL

INPUT PORT

51

IO4

PROG.

DIT

START

56

55

54

53

52

IO7

IO6

IO5

VDD

VSSP

VCO

58

57

PDO

VCOI

59

DDP

TIMING

GENERATOR

61

60

CKO

DDX

64

63

62

XI

XO

VSSX

1

RESET

CDX-757MX

6-14. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC201 HD6432238RWN21TEIV (SYSTEM CONTROLLER)

Pin No. Pin Name I/O Description

1 TEST I Test mode setting terminal “L”: test mode Not used
2 DECXRST O Reset signal output to the CD-ROM/MP3 decoder “L”: reset
3 DECSTBY O Standby mode control signal output to the CD-ROM/MP3 decoder “H”: standby
4 FOK I Focus OK signal input from the DSP “L”: NG, “H”: OK
5GFS I Guard frame sync signal input from the DSP “L”: NG, “H”: OK
6 SCLK O Serial data reading clock signal output to the DSP
7 SENS I Internal status signal (sense signal) input from the DSP
8CDCLK O Serial data transfer clock signal output to the DSP

9CDLAT O Serial data latch pulse signal output to the DSP
10 CDDAT O Serial data output to the DSP
11 XRST O System reset signal output to the DSP “L”: reset
12 CVCC — Power supply terminal (+3.3V) (for system)
13 NC O Not used
14 VSS — Ground terminal
15 XQOK O Subcode Q OK pulse signal output to the DSP
16 XRDE O Read enable signal output to the DSP
17 XWRE O Write enable signal output to the DSP
18 DAC-DATA O Mode control data output to the D/A converter
19 DAC-CLK O Mode control data transfer clock signal output to the D/A converter
20 DAC-LAT O Mode control data latch pulse signal output to the D/A converter
21 ESPSEL I ESP mode setting terminal “L”: ESP on (fixed at “L” in this set)
22 TEXTSEL I CD text mode setting terminal “L”: CD text on (fixed at “L” in this set)
23 CFSEL I Custom file on/off setting terminal “L”: custom file on (fixed at “L” in this set)
24 DOUT SEL I Input terminal for digital out on/off setting “L”: digital out on Not used
25 MAG-SW I Magazine detect switch input terminal Not used
26 MUTE O Audio line muting on/off control signal output “H”: muting on

27, 28 NC O Not used

29 CDON O D/A convert and servo sections power supply on/off control signal output “H”: power on
30 EVON O Mechanism deck section power supply on/off control signal output “H”: power on
31 PCTX O PC connecting output terminal for UART
32 PCRX I PC connecting input terminal for UART

33 to 35 NC O Not used

36 ELVF O Motor drive signal (elevator up direction) output to the elevator motor drive
37 ELVR O Motor drive signal (elevator down direction) output to the elevator motor drive
38 SCOR I Subcode sync (S0+S1) detection signal input from the DSP
39 NC O Not used
40 GRSCOR I Subcode sync (S0+S1) detection signal input from the DSP
41 NC O Not used
42 AVSS — Ground terminal (for A/D converter)

43 to 49 NCI I Not used

50 EHS I Elevator height position detection signal input from the elevator height sensor (A/D input)
51 NCI I Not used

52 MCK I

53 VREF I Reference voltage (+3.3V) input terminal (for A/D converter)

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

39

CDX-757MX

Pin No. Pin Name I/O Description

54 AVCC — Power supply terminal (+3.3V) (for A/D converter)

55, 56 MD0, MD1 I Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)

57 OSC2 O Sub system clock output terminal Not used
58 OSC1 I Sub system clock input terminal Not used (fixed at “L”)

59 RES I

60 NMI O Not used (fixed at “H”)
61 STBY O Standby mode control signal output terminal Not used (fixed at “H”)
62 VCC — Power supply terminal (+3.3V)
63 XTAL I Main system clock input terminal (12.288 MHz)
64 VSS — Ground terminal
65 EXTAL O Main system clock output terminal (12.288 MHz)
66 FEW I Flash memory data write enable signal input terminal
67 MD2 I Setting terminal for the CPU operational mode “H”: single chip mode (fixed at “H” in this set)
68 FL BOOT I Flash memory data write control signal input terminal “L” active
69 FL W O Flash memory data write control signal output (connecting FEW (pin 66))

70, 71 NC O Not used

72 MGLK-SW I Magazine in/out detect switch input terminal “L”: magazine in
73 DECINT I Interrupt signal input from the CD-ROM/MP3 decoder
74 NC O Not used
75 EJECT I Eject switch input terminal “L” active
76 SO O Serial data output to the SONY bus interface
77 SI I Serial data input from the SONY bus interface
78 SCLK I Serial data transfer clock signal input from the SONY bus interface
79 EEDATA I/O Two-way data bus with the EEPROM
80 SDA I/O I2C interface data input/output with the CD-ROM/MP3 decoder
81 SCL O I2C interface data transfer clock signal output to the CD-ROM/MP3 decoder
82 EECLK O Serial data transfer clock signal output to the EEPROM
83 NC O Not used
84 SQSO I Subcode Q data input from the DSP
85 SQCK O Subcode Q data reading clock signal output to the DSP

86 to 89 NC O Not used

90 R/RW SEL O CD-ROM/RW selection signal output “L”: CD-RW, “H”: CD-ROM
91 BUSON I Bus on/off control signal input from the SONY bus interface “L”: bus on
92 BUCHK I

93, 94 NC O Not used

95 LOADF O Motor drive signal (load chucking direction) output to the chucking motor drive
96 LOADR O Motor drive signal (save direction) output to the chucking motor drive

97 SINGLE I

98 LOAD SW I

99 SAVE SW I

100 LIM SW I

System reset signal input from the SONY bus interface and reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

Battery detection signal input “H”: low battery (Normally: “L”)

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

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

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

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

40

7

SECTION 7

EXPLODED VIEWS

CDX-757MX

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

7-1. 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.

• Accessories are given in the last of the elec­trical parts list.

19

#2

B

18

#3

A

16

#2

14

17

#3

RV202

15

10

22

7

8

#2

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

Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

20

#2

19

MG-251B-13

18

9

B

main board

5

not supplied

1

A

3

not supplied

Ref. No. Part No. Description Remark

1 3-047-852-01 DAMPER (T)
2 3-237-553-11 CASE (LOWER. T)

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

4 X-3375-357-1 ARM (FLT) ASSY
5 1-684-650-11 JACK BOARD

6 3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
7 A-3274-196-A MAIN BOARD, COMPLETE
8 1-676-340-12 JACK FLEXIBLE BOARD
9 1-676-339-12 MAIN FLEXIBLE BOARD
10 1-684-651-11 SWITCH BOARD

12 X-3381-744-1 DOOR (M) ASSY
13 3-229-226-21 PANEL, FRONT
14 3-022-007-02 BUTTON (EJT) (Z)

22

4

Ref. No. Part No. Description Remark

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 3-047-886-11 LEVER (FLT. 838)

20 3-237-609-11 CASE (UPPER. T)
22 3-935-636-11 SCREW (FP)
23 X-3375-360-2 ARM (FRT) ASSY
RV202 1-227-137-11 RES, VAR, SLIDE 10K

#2 7-685-792-09 SCREW +PTT 2.6X6 (S)

#3 7-685-781-09 SCREW +PTT 2X4 (S)

not supplied

23

not supplied

1

2

not supplied

(ELEVATOR HEIGHT SENSOR)

41

CDX-757MX

3

7-2. MECHANISM DECK SECTION-1

(MG-251B-137)

#3

101

#3

#3

102

mechanism deck section-

103

mechanism deck section-2

Ref. No. Part No. Description Remark

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

42

Ref. No. Part No. Description Remark

103 3-011-997-01 SPRING (STOPPER. LOWER)
#3 7-685-781-09 SCREW +PTT 2X4 (S)

7-3. MECHANISM DECK SECTION-2

(MG-251B-137)

CDX-757MX

#3

152

151

M104

154

153

Ref. No. Part No. Description Remark

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

* 152 3-040-790-02 BRACKET (EVM. S)

153 X-3378-092-7 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)
#3 7-685-781-09 SCREW +PTT 2X4 (S)

43

CDX-757MX

4

7-4. MECHANISM DECK SECTION-3

(MG-251B-137)

211

#8

213

212

#4

202

M103

201

204

205

209

206

208

#8

210

207

#3

mechanism deck section-

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 3-022-839-02 ARM (NSW)

207 3-573-936-00 STOPPER, REEL
208 X-3373-552-1 GEAR (LOAD 1) ASSY
209 3-010-252-11 ROLLER (CRE)
210 3-010-268-01 SPRING (DH), TENSION

44

Ref. No. Part No. Description Remark
* 211 A-3290-194-M 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)

#3 7-685-781-09 SCREW +PTT 2X4 (S)
#4 7-624-104-04 STOP RING 2.0, TYPE-E
#6 7-628-253-00 SCREW +PS 2X4
#8 7-624-102-04 STOP RING 1.5, TYPE-E

7-5. MECHANISM DECK SECTION-4

(MG-251B-137)

CDX-757MX

258

256

#7

254

257

252

#11

not supplied

255

#10

259

not supplied

M102

not supplied

260

M101

#5

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-3378-101-2 HOLDER (SLED. S) ASSY
254 3-931-832-01 GEAR (SL MIDWAY)

0255 8-820-103-11 OPTICAL PICK-UP KSS-720A/C-RP

251

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

259 A-3301-954-C BASE (OPT. S) (J) ASSY
260 3-241-673-01 SCREW (SM), SPECIAL
M101 A-3315-151-A SLED MOTOR ASSY (251)
M102 A-3301-998-A SPINDLE MOTOR (S) SUB ASSY
#5 7-627-554-07 SCREW, PRECISION +P 2X2.2

Les composants identifiés par une
marque 0 sont critiques pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

256 A-3291-669-A SHAFT (FEED) ASSY
257 3-010-263-01 DETENT (SHAFT THRUST)

* 258 1-679-422-12 LSW BOARD

#7 7-627-553-27 SCREW, PRECISION +P 2X2.5
#10 7-627-000-00 SCREW, PRECISION +P 1.7X2.2 TYPE 3
#11 7-627-553-37 PRECISION SCREW +P 2X3 TYPE 3

45

CDX-757MX

JACK LSW MAIN

SECTION 8

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

1-684-650-11 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 >

• 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 1-164-156-11 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.

Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

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

CN901 1-779-077-51 PLUG, CONNECTOR (CONTROL, AUDIO OUT)
CNJ901 1-778-775-21 CONNECTOR, FPC 13P

< DIODE >

D901 8-719-067-40 DIODE STZ6.8N-T146

< FERRITE BEAD >

FB901 1-469-179-21 FERRITE
FB902 1-469-179-21 FERRITE
FB903 1-469-179-21 FERRITE

< FUSE >

PS901 1-576-592-21 FUSE (SMD) 5A 24V

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

* 1-679-422-12 LSW BOARD

**********

< SWITCH >

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

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

A-3274-196-A MAIN BOARD, COMPLETE

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

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

< CAPACITOR >

C01 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
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

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 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C205 1-164-156-11 CERAMIC CHIP 0.1uF 25V
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
C305 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C306 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C307 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C309 1-164-156-11 CERAMIC CHIP 0.1uF 25V

C310 1-104-656-11 ELECT 2200uF 6.3V
C311 1-126-382-11 ELECT 100uF 20% 16V
C312 1-164-156-11 CERAMIC CHIP 0.1uF 25V
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 1-125-710-11 DOUBLE LAYER 0.1F 5.5V
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

C401 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C403 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C404 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C405 1-164-230-11 CERAMIC CHIP 220PF 10% 50V
C406 1-164-230-11 CERAMIC CHIP 220PF 10% 50V

46

CDX-757MX

MAIN

Ref. No. Part No. Description Remark

C407 1-115-651-11 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 1-115-650-11 ELECT 47uF 20% 16V
C503 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C504 1-115-650-11 ELECT 47uF 20% 16V

C505 1-115-651-11 ELECT 100uF 20% 16V
C601 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C602 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C603 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C604 1-126-791-11 ELECT 10uF 20% 16V

C605 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C606 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C607 1-128-934-11 CERAMIC CHIP 0.33uF 20% 10V
C608 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C609 1-115-416-11 CERAMIC CHIP 0.001uF 5% 25V

C610 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C611 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C612 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C613 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C614 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C615 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C616 1-162-923-11 CERAMIC CHIP 47PF 5% 50V

< DIODE >

D201 8-719-050-38 DIODE M1MA152WK-T1
D301 6-500-054-01 DIODE RB481YT2R
D302 8-719-056-93 DIODE MM3Z18VST1
D303 8-719-056-93 DIODE MM3Z18VST1
D306 8-719-056-83 DIODE MM3Z6V8ST1

D310 8-719-976-99 DIODE MM3Z5V1ST1

Ref. No. Part No. Description Remark

< TRANSISTOR >

Q202 8-729-421-22 TRANSISTOR MUN2211T1
Q301 8-729-010-25 TRANSISTOR MSD601-RT1
Q302 8-729-028-62 TRANSISTOR DTA115EKA-T146
Q303 8-729-922-47 TRANSISTOR 2SB1184-TLR
Q304 8-729-010-25 TRANSISTOR MSD601-RT1

Q402 8-729-424-08 TRANSISTOR MUN2111T1
Q410 8-729-920-21 TRANSISTOR DTC314TK-T-146
Q420 8-729-920-21 TRANSISTOR DTC314TK-T-146

< RESISTOR >

R101 1-216-839-11 METAL CHIP 33K 5% 1/10W
R102 1-216-833-11 METAL CHIP 10K 5% 1/10W
R103 1-216-827-11 METAL CHIP 3.3K 5% 1/10W
R104 1-216-827-11 METAL CHIP 3.3K 5% 1/10W
R105 1-216-856-11 METAL CHIP 820K 5% 1/10W

R106 1-216-853-11 METAL CHIP 470K 5% 1/10W
R107 1-216-833-11 METAL CHIP 10K 5% 1/10W
R108 1-216-853-11 METAL CHIP 470K 5% 1/10W
R109 1-216-857-11 METAL CHIP 1M 5% 1/10W
R110 1-216-813-11 METAL CHIP 220 5% 1/10W

R111 1-216-815-11 METAL CHIP 330 5% 1/10W
R112 1-216-809-11 METAL CHIP 100 5% 1/10W
R113 1-216-809-11 METAL CHIP 100 5% 1/10W
R114 1-216-809-11 METAL CHIP 100 5% 1/10W
R115 1-216-809-11 METAL CHIP 100 5% 1/10W

R116 1-216-821-11 METAL CHIP 1K 5% 1/10W
R122 1-216-839-11 METAL CHIP 33K 5% 1/10W
R123 1-216-845-11 METAL CHIP 100K 5% 1/10W
R125 1-216-839-11 METAL CHIP 33K 5% 1/10W
R201 1-216-845-11 METAL CHIP 100K 5% 1/10W

R202 1-216-845-11 METAL CHIP 100K 5% 1/10W
R203 1-216-845-11 METAL CHIP 100K 5% 1/10W
R204 1-216-864-11 METAL CHIP 0 5% 1/10W
R206 1-216-845-11 METAL CHIP 100K 5% 1/10W
R207 1-216-821-11 METAL CHIP 1K 5% 1/10W

< IC >

IC101 8-752-398-18 IC CXD3027R
IC102 8-759-538-44 IC MSM51V17400D-10TK-FS
IC201 6-801-496-01 IC HD6432238RWN21TEIV
IC202 8-759-660-38 IC BR24C16FJ-E2
IC301 8-759-527-33 IC LB1930M-TLM

IC302 8-759-829-46 IC BA8272AFV-E2
IC303 6-702-148-01 IC XC61CN2702NR
IC304 6-702-147-01 IC NJM2396F08
IC305 6-702-146-01 IC NJM2396F05
IC306 8-759-444-93 IC RH5RL33AA-T1

IC401 8-759-662-11 IC TLV2362IPWR
IC501 8-759-825-13 IC PCM1748E/2K
IC601 6-700-297-01 IC CXD9684R-004
IC602 6-700-296-01 IC W24L010AT-12-EL15
IC603 8-759-645-31 IC RN5RZ25BA-TL

IC604 8-759-196-96 IC TC7SH08FU-TE85R
IC605 8-759-196-96 IC TC7SH08FU-TE85R

R208 1-216-845-11 METAL CHIP 100K 5% 1/10W
R209 1-216-853-11 METAL CHIP 470K 5% 1/10W
R210 1-216-833-11 METAL CHIP 10K 5% 1/10W
R211 1-216-845-11 METAL CHIP 100K 5% 1/10W
R212 1-216-821-11 METAL CHIP 1K 5% 1/10W

R215 1-216-821-11 METAL CHIP 1K 5% 1/10W
R301 1-216-841-11 METAL CHIP 47K 5% 1/10W
R302 1-216-853-11 METAL CHIP 470K 5% 1/10W
R303 1-216-845-11 METAL CHIP 100K 5% 1/10W
R304 1-216-857-11 METAL CHIP 1M 5% 1/10W

R305 1-216-845-11 METAL CHIP 100K 5% 1/10W
R306 1-216-841-11 METAL CHIP 47K 5% 1/10W
R307 1-218-739-11 RES-CHIP 91K 5% 1/10W
R310 1-216-838-11 METAL CHIP 27K 5% 1/10W
R311 1-216-845-11 METAL CHIP 100K 5% 1/10W

R401 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R402 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R403 1-216-833-11 METAL CHIP 10K 5% 1/10W
R404 1-216-833-11 METAL CHIP 10K 5% 1/10W
R405 1-218-871-11 METAL CHIP 10K 0.5% 1/10W

R406 1-218-871-11 METAL CHIP 10K 0.5% 1/10W

47

CDX-757MX

MAIN RF

Ref. No. Part No. Description Remark

R411 1-216-847-11 METAL CHIP 150K 5% 1/10W
R412 1-216-847-11 METAL CHIP 150K 5% 1/10W
R413 1-216-809-11 METAL CHIP 100 5% 1/10W
R414 1-216-809-11 METAL CHIP 100 5% 1/10W

R415 1-216-845-11 METAL CHIP 100K 5% 1/10W
R416 1-216-845-11 METAL CHIP 100K 5% 1/10W
R501 1-216-813-11 METAL CHIP 220 5% 1/10W
R601 1-216-821-11 METAL CHIP 1K 5% 1/10W
R602 1-216-845-11 METAL CHIP 100K 5% 1/10W

R603 1-216-809-11 METAL CHIP 100 5% 1/10W
R607 1-216-814-11 METAL CHIP 270 5% 1/10W
R608 1-216-814-11 METAL CHIP 270 5% 1/10W
R610 1-216-857-11 METAL CHIP 1M 5% 1/10W
R612 1-216-811-11 METAL CHIP 150 5% 1/10W

R613 1-216-821-11 METAL CHIP 1K 5% 1/10W

< COMPOSITION CIRCUIT BLOCK >

RB601 1-233-810-21 RES, NETWORK 100K (3216)
RB602 1-233-810-21 RES, NETWORK 100K (3216)
RB603 1-233-810-21 RES, NETWORK 100K (3216)
RB604 1-233-810-21 RES, NETWORK 100K (3216)

< VARIABLE RESISTOR >

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

< SWITCH >

Ref. No. Part No. Description Remark

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 >

Q101 8-729-010-05 TRANSISTOR MSB709-RT1
Q102 8-729-024-88 TRANSISTOR MUN2212T1

< RESISTOR >

R101 1-216-801-11 METAL CHIP 22 5% 1/10W
R102 1-216-837-11 METAL CHIP 22K 5% 1/10W
R103 1-216-837-11 METAL CHIP 22K 5% 1/10W
R104 1-216-845-11 METAL CHIP 100K 5% 1/10W
R105 1-216-801-11 METAL CHIP 22 5% 1/10W

R106 1-216-864-11 METAL CHIP 0 5% 1/10W
R107 1-216-845-11 METAL CHIP 100K 5% 1/10W
R108 1-216-833-11 METAL CHIP 10K 5% 1/10W
R109 1-216-836-11 METAL CHIP 18K 5% 1/10W
R110 1-216-834-11 METAL CHIP 12K 5% 1/10W

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

< VIBRATOR >

X101 1-795-577-21 VIBRATOR, CERAMIC (16.9344MHz)
X201 1-767-133-21 VIBRATOR, CERAMIC (12.288MHz)

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

* 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

R111 1-216-835-11 METAL CHIP 15K 5% 1/10W
R112 1-216-845-11 METAL CHIP 100K 5% 1/10W
R113 1-218-859-11 METAL CHIP 3.3K 0.5% 1/10W
R116 1-216-833-11 METAL CHIP 10K 5% 1/10W
R117 1-216-833-11 METAL CHIP 10K 5% 1/10W

R120 1-218-879-11 METAL CHIP 22K 0.5% 1/10W
R121 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R122 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R201 1-216-826-11 METAL CHIP 2.7K 5% 1/10W
R202 1-216-833-11 METAL CHIP 10K 5% 1/10W

R203 1-216-833-11 METAL CHIP 10K 5% 1/10W
R204 1-216-839-11 METAL CHIP 33K 5% 1/10W
R205 1-216-833-11 METAL CHIP 10K 5% 1/10W
R206 1-216-839-11 METAL CHIP 33K 5% 1/10W
R207 1-216-833-11 METAL CHIP 10K 5% 1/10W

R208 1-216-839-11 METAL CHIP 33K 5% 1/10W
R209 1-216-833-11 METAL CHIP 10K 5% 1/10W
R210 1-216-839-11 METAL CHIP 33K 5% 1/10W
R211 1-216-833-11 METAL CHIP 10K 5% 1/10W
R212 1-216-839-11 METAL CHIP 33K 5% 1/10W

R213 1-216-833-11 METAL CHIP 10K 5% 1/10W
R214 1-216-839-11 METAL CHIP 33K 5% 1/10W
R215 1-216-841-11 METAL CHIP 47K 5% 1/10W
R216 1-216-842-11 METAL CHIP 56K 5% 1/10W
R218 1-216-841-11 METAL CHIP 47K 5% 1/10W

R219 1-216-843-11 METAL CHIP 68K 5% 1/10W
R220 1-216-834-11 METAL CHIP 12K 5% 1/10W
R222 1-216-821-11 METAL CHIP 1K 5% 1/10W
R223 1-216-819-11 METAL CHIP 680 5% 1/10W

48

CDX-757MX

RF SWITCH

Ref. No. Part No. Description Remark

< SWITCH >

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

(CHUCKING END DETECT)

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

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

1-684-651-11 SWITCH BOARD

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

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

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

MISCELLANEOUS

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

251 1-676-341-11 OP FLEXIBLE BOARD

0255 8-820-103-11 OPTICAL PICK-UP KSS-720A/C-RP

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

(ELEVATOR HEIGHT SENSOR)

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

ACCESSORIES

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

Ref. No. Part No. Description Remark

3-241-142-11 MANUAL, INSRTUCTION (ENGLISH, FRENCH,

TRADITIONAL CHINESE)

A-3301-944-A MAGAZINE (250) 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)
504 1-590-519-21 CORD (WITH CONNECTOR) (BUS CABLE)

501 502

BRACKET (T)

× 2

+PSW4 × 10

× 4

TAPPING SCREW

SCREW ASSY

(DIA.5 × 20) × 4

503 504

RCA PIN CORD 5 m

× 1

BUS CABLE 5 m

× 1

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

Les composants identifiés par une
marque 0 sont critiques pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

49

CDX-757MX

– JACK BOARD (Conductor Side) –

Former: 1-684-650-11
New : 1-684-650-12

US Model

Canadian Model

SERVICE MANUAL

E Model

Ver 1.1 2002.08

SUPPLEMENT-1

File this supplement with the service manual.

Subject: Change of MAIN/SWITCH/JACK boards. (Suffix-12)

(ECN-CSA06141)

In this set, MAIN, SWITCH and JACK 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 DISCRIMINATION

Former and new board can be distinguished with their suffix number the Part No. as shown in the figure below though, there
are printing error in the Part No. printed on silk-screen of MAIN boards and SWITCH boards.

MAIN Board Incorrect: 1-168-649-11, 12 Correct: 1-684-649-11, 12
SWITCH Board Incorrect: 1-164-651-11, 12 Correct: 1-684-651-11, 12

– MAIN BOARD (Conductor Side) –

[][][]-[][][]

1-

-

Former: -11
New : -12

– SWITCH BOARD (Conductor Side) –

[][][]-[][][]

1-

-

Former: -11
New : -12

CDX-757MX

• DIAGRAMS
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

•

•

: internal component.
: 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.

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
specified.

f

•

: internal component.

1

4

/

W or less unless otherwise

• C : panel designation.

• A : B+ Line.

• H : adjustment for repair.

•Power voltage is dc 14.4V and f ed with regulated dc power
supply from CD changer controller.

•Voltages and waveforms are dc with respect to ground in
CD play conditions.
no mark : CD PLAY

•Voltages are taken with a VOM (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

2

SCHEMATIC DIAGRAM – MAIN Board (1/3) –

(1/3)

CDX-757MX

A1

MAIN

FLEXIBLE

BOARD

CN101

GND

GND

+8V

+8V

MDP

SRDR

SFDR

TRDR

TFDR

FFDR

FRDR

CH.R

CH.F

LIM.SW

SAVE

LOAD

SW

VC

FE

TE

RF

RFAC

+5V

+3.3V

GND

GND

TP102

TP104

TP106

TP108

TP110

TP112

TP114

TP116

TP118

TP120

TP122

TP101

TP103

TP105

TP107

TP109

TP111

TP113

TP115

TP117

TP119

TP121

TP123

SRDR

SFDR

TRDR

FRDR

SAVE

XLAT

SCLK

CLOK

SENS

FOK

C101

0.1

MDP

BP121

BP122

R123
100k

0.01

TP125

TP126

C01

R122

33k

R125

33k

C121
220p

C122
220p

C123

0.1

C102

0.1

C103

0.1

TFDR

FFDR

REV

FWD

LIM

LOAD

SW

MDP

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

R101

33k

C105

0.047

0.0033

R102R108

10k470k

1

15
C1

R109

1M

0.0015

R116

XRST

DATA

1k

C114

0.1

R104

3.3k

R103

3.3k

C110

C106

C104

1

C107
220p

C108

0.1

SQCK

SCOR

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

IC101

CXD3027R

R107

10k

R106
470k

R105
820k

C109

0.01

SQSO

XRDE

XQOK

XWRE

A9

A8

A7

A6

A5

A4

D0

D1 D2

XWE

XRAS

XOE

XCAS

XWE

XRAS

A10

16.9344MHz

R114

100

R113

R112

100

DATA

BCK

C111

0.1

GFSGRSCOR

LRCK

100

A10

A0

D2

A1

D3

A2

D0

A3

D1

A0

A1

A2

A3

C113

0.1

C161

0.1

R111

330

X101

C112

0.1

IC102

GM71VS17403CLT-6

D-RAM

R110

220

D3

XCAS

XOE

A9

A8

A7

A6

A5

A4

C162

0.1

A2

(Page 4)

A3

A4

A5

A6

A7

A8

A10

5

B6

B

B1

B2

B3

B4

(Page 5)

33

CDX-757MX

SCHEMATIC DIAGRAM – MAIN (2/3)/SWITCH Boards –

(2/3)

A1

IC602

W24L010AT-

A11

RB604

A9

A8

A13

WR2

A15

A16

A14

A12

100k

A7

X4

A6

A5

A4

100k

X4

C608

0.1

C606

0.1

IO6

IO7

270

R608

C607

0.33

R607
270

2

3

5

4

IO

IO

IO

IO

G

R115

A2

A3

100

C604

10

C614

0.1

16V 1k

SCL

TC-XRDE

C601

0.1

V

R613

C610

0.1

GATE SWITCH

V

IC605

TC7SH08FU

-TE85R

GATE SWITCH

G

IC604

TC7SH08FU

-TE85R

C616
100p

0.001

C609

R612

100

R610

1M

12-EL15

A11

OE

A9

A10

A8

CS1

A13

IO8

IO7

WE

IO6

CS2

IO5

A15

IO4

VDD

GND

NC

A16

IO3

A14

IO2

A12

IO1

A7

A0

A6

A1

A5

A2

A4

A3

S-RAM

RB602RB603

100k

X4

OE

A10

CE

IO7

IO6

IO5

IO4

IO3

IO2

IO1

IO0

A0

A1

A2

A3

EJECT

IC301

LB1930M-TLM

REV

FWD

ELEVATOR MOTOR DRIVE

C301

0.1

Q302

BUCHK

DTA115EKA-T146

R304

1M

Q301

MSD601-RT1

R302 C307 R307
470k 0.01 91k

Q301,302

BATTERY

CHECK

C302 C303

0.1 0.1

R303
100k

D306

MM3Z6V8ST1

TP321 TP323

BP301

D303

MM3Z18VST1

MSD601-RT1

R311
100k

D301

RB481YT2R

2SB1184-TLR

Q304

MM3Z5V1ST1

TP322

Q303

R306

47k

R310

27k

D310

IC302

BUS INTERFACE

(FOR SONY BUS)

VIN

NCGND

C309

0.1

BA8272AFV-E2

RESET

SI

SO

SCK

LOF

BUSON
OUT
VCC

C310
2200

6.3V

BUSON

BUSON

RST

DATA

VREF

CLK

GND

IN

OUT

Q303,304

+3.3V REGULATOR

16V

5.5V

100

0.1

C311

C316

C312

0.1

RST

SO

SI

SCK

BUSON

0.1

C304

T
S
R

R305
100k

RESET SIGNAL

GENERATOR

IC303

XC61CN2702NR

VOUT

BP302

D302

MM3Z18VST1

TP324

0.001

C305

0.0047

TP301

EJECT

TP302

GND

TP303
ELV-

TP304

ELV+

C306

R301

47k

M104

(ELEVATOR)

(CHASSIS)

TP802

TP801

TP311

TP313

TP306

TP308

TP310

TP312

TP305

TP307

TP309

SW801

BUSON

(CHASSIS)

CN301

CLK

RST

DATA

GND

GND

GND

B.UP

LCH

AGND

RCH

JACK

FLEXIBLE

BOARD

(Page 8)

(Page 3)

X1

R601

1k

DECXRST

A0

A1

SDA

A2

R603

100

A4

A5

A6

A7

A8

A10

A3

A4

A5

CE

RB601

100k

C615

0.1

X0

VSSX

RESET

MIMD

AD0

AD1

I2C_SDA

I2C_SCL

AD2

VDDT(3.3V)

SDO

AD3

AD4

SDI0

BCKIA

LRCKIA

AD5

CE

C602

E
O

DECSTBY DECINT

XRDE

VDDX(2.5V)

STANBY

VSSL(2.5GND)

VDD(2.5V)

VSS(2.5GND)

OE

PDO

VCOI

VDDP

CD-ROM DECODER,

MP3 DECODER

IC601

CXD9684R-004

LO

VRAL

VDAL(2.5V)

TP601 TP602

VSSP

VDAR(2.5V)

C612C603

0.10.10.1

IO7

IO6

IO5

IO3

IO2

IO4

VDD(2.5V)

VRAR

TESTP

RO

VSSR(2.5GND)

VSS

IO1

IO0

AD15

AD16

WR

AD14

AD13

VSS

REQ

AD6

AD7

AD8

VDDT(3.3V)

AD9

AD10

AD11

AD12

CKS

+2.5V REGULATOR

IC603

RN5RZ25BA-TL

REG

GNDNCCE

11
A

A12

IO1

IO0

A15

A16

WR2

R602

A14

100k

A13

A6

C605

0.1

A7

A8

A9

A10

O

V

C611

0.1

C313

100
16V

C505

100

0.001 0.001

16V 220p10k

OGCI

REG

+8V REGULATOR

C314

0.1

N
O

EV

R405R401

LOW-PASS

FILTER

IC401

TLV2362IPWR

R412

150k

R402

C403 C404

10k

I

+3.3V REGULATOR

O

G

IC306

RH5RL33AA-T1

C319C315

1000

16V

C405R403R411
220p10k150k

10k10k

GND

R406

10k

22

6.3V

C613

0.1

C408

0.1

C407

100
16V

C409

R413

1004716V

R415C411

VCC

C406R404

C401

0.1

C410

47

16V 100

100k100p

R416

C412

100k

100p

R414

REG

ON

CD

UTE
M

Q420

DTC314TK

-T-146

MUTING

Q410

DTC314TK

-T-146

MUTING

OGCI

+5V REGULATOR

NJM2396F05NJM2396F08

Q402

MUN2111T1

MUTING CONTROL

SWITCH

IC305IC304

C318C317

0.10.1

C1

C3

C4

C5

C6

C7

C8

C9

(Page 5)

44

SCHEMATIC DIAGRAM – MAIN Board (3/3) –

CDX-757MX

(Page 3)

(FOR PC)

CN201

6P

RESET

PCTX

PCRX

FL_BOOT

+B

GND

TP209

TP207

TP210

TP208

(3/3)

3

BP201

B

R215

1k

Q202

MUN2211T1

CD-ROM/

RW SELECT

SWITCH

IC202

BR24C16FJ-E2

VSSSDA

S2

SCL

S1

VSS

SO

VCC

EEPROM

B1

D201

M1MA152WK-T1

D202

R202 C201
100k 0.1

1SS355TE-17

TC-XRDE

XRDE

MD

MC

ML

G

W

A

-S

M

T_SEL
U

MUTE

O
D

NC

NC

CDON

EVON

PCTX

PCRX

NC

NC

ELVF

ELVR

SCOR

NC

GRSCOR

NC

AVSS

NCI

NCI

NCI

NCI

NCI

NCI

NCI

EHS

K

I

C

C

M

N

SCOR

GRSCOR

R213

1k

CDON

EVON

FWD

REV

R201
100k

100k

100k

R206

R211

T

EL

EL

SEL

-LA

FS

P

TS

C

ES

AC

TEX

D

C
C
V

ref

MD1

MD0

A

V

XQOK

XWRE

S

XRDE

XWRE

SYSTEM CONTROLLER

I
M

ES

N

R

S
V

XQOK

HD6432238R

WN21TEIV

Y

TB
S

VCC

IC201

NC

AL
T
X

TA

LK

A

-C

C-D

AC

A

D

D

1

2

C

C

S

S

O

O

CLOK

XLAT

DATA

XRST

T

T

C

A

LA

VC

D

XRST

D

C

D

C

C

AL

E

S
S

XT
E

V

FW

MD2

FOK

GFS

SCLK

SENS

CLK

SENS

D
C

T
O
O

_W

FL_B

FL

SCLK

C
N

DECXRST

DECSTBY

K

FS
G

FO

TEST

LIM_SW

DECXRST

DECSTBY

SAVE_SW

LOAD_SW

SINGLE

LOADR

LOADF

NC

NC

BUCHKNC

BUSON

R/RW_SEL

NC

NC

NC

NC

SQCK

SQSO

NC

EECLK

SCL

SDA

EEDATA

SCLK

SI

SO

T

-SW
T
C

LK

CIN

G

C

C

E

JE

N

M

N

E

D

B2

LIMMUTE

SAVE

LOAD

REV

SW

FWD

BUCHK

BUSON

SQCK

SQSO

SCL

SDA

SCK

SI

SO

R210R212

10k1k

B4

B6

B5

C1

C4

C3

R501
220

DIGITAL FILTER,

D/A CONVERTER

C501

0.1

BCK

C502

47

16V

C503

0.1

C504

47

16V

DATA

LRCK

IC501

PCM1748E/2K

BCK

DATA

LRCK

DGND

VDD

VCC

VOUTL

VOUTR

ZEROL

ZEROR

SCK

ML

MC

MD

VCOM

AGND

ML

MC

MD

C7

C6

C8

C9

(Page 4)

RV202

ELEVATOR HEIGHT

SENSOR

R204

0

RV202 C202 C203

10k 0.1 0.1

RV201

TP203

C204

0.1

R207 C205

1k 0.1

RST

R203
100k

EJECT

R208R209
100k470k

SW201

MAGAZINE

DETECT

201

X201

12.288MHz47k

SW

TP211

DECINT

C206

0.1

C5

55

CDX-757MX

PRINTED WIRING BOARDS – MAIN Board (Component Side) –

• Semiconductor
Location

Ref. No. Location

D201 E-9
D202 E-8
D301 E-2
D302 E-2
D303 E-1
D306 F-5
D310 F-4

IC101 C-9
IC102 D-8
IC201 F-9
IC202 F-11
IC301 G-3
IC302 F-1
IC303 G-3
IC306 A-9
IC401 C-4
IC501 B-6
IC601 C-6
IC602 E-6
IC603 F-6
IC604 F-8
IC605 B-7

Q202 E-11
Q301 F-5
Q302 F-5
Q303 G-4
Q304 G-4
Q402 E-4
Q410 D-2
Q420 D-3

1 2 3 4 5 6 7 8 9 10 11 12

MAIN BOARD

A

(COMPONENT SIDE)

135

IC306

4

IC605

B

IC501

90 61

91

60

26

IC101

C

IC401

D

113

32

33

IC601

48

49 64

E

IC302

F

IC603

17

IC602

31

45

16

120

130

1

IC102

D202

25 1

45

31

IC604

R213

26

50

51 75

31

IC201

100

1

MAIN FLEXIBLE BOARD

A

RF BOARD

CNJ101

IC202

76

IC303

G

IC301

SW201

MAGAZINE

DETECT

H

JACK FLEXIBLE BOARD

B

JACK BOARD

CNJ901

I

J

K

(Page 8)

12

1-684-649-

(12)

66

PRINTED WIRING BOARDS – MAIN (Conductor Side)/SWITCH Boards –

CDX-757MX

D

A

B

C

1 2 3 4 5 6 7 8 9 10 11 12

MAIN BOARD

(CHASSIS)

(CONDUCTOR SIDE)

BP121

BP122

• Semiconductor
Location

Ref. No. Location

IC304 H-12
IC305 E-12

G

H

E

F

I

J

(CHASSIS)

BP201

RV202

ELEVATOR

HEIGHT

SENSOR

BP302

BP301

TP304

RED

M104

(ELEVATOR)

M

TP303

BLK

TP302

TP301

YEL

BLU

SWITCH BOARD

(CHASSIS)

YEL

BLU

12

(12)

1-684-651-

IC305

IC304

1-684-649-

12

(12)

6

K

(FOR PC)

77

CDX-757MX

PRINTED WIRING BOARDS – JACK Board –

JACK BOARD

(COMPONENT SIDE)

JACK FLEXIBLE BOARD

B

MAIN BOARD

CN301

(Page 6)

1-684-650-

12

(12)

JACK BOARD

(CONDUCTOR SIDE)

6

8

3

5

1

7

CONTROL

(FOR SONY BUS)

5 4

6

7

8

2 13

2

4

CN901

R

AUDIO OUT

L

SCHEMATIC DIAGRAM – JACK Board –

CNJ901

13P

JACK

FLEXIBLE

BOARD

(Page 4)

CLK

RST

DATA

BUSON

GND

GND

GND

B.UP

B.UP

B.UP

LCH

AGND

RCH

TP901

TP902

TP903

TP904

TP905

TP906

C901 C902

0.001 0.1

TP907

TP908

TP909

PS901

24V

12

1-684-650-

RST

NC

B.UP

CLK

DATA

BUSON

GND

SIRCS

5A

D901

STZ6.8N

C904

-T146

100p

FB901

FB902

FB903

R

L

CONTROL

(FOR SONY BUS)

CN901

R

AUDIO OUT

L

(12)

88

7

• EXPLODED VIEWS

CDX-757MX

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

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.

• Accessories are given in the last of the elec­trical parts list.

19

#2

B

18

#3

A

16

#2

14

17

#3

RV202

15

10

22

7

8

#2

20

#2

19

MG-251B-13

18

9

B

main board

5

not supplied

1

A

3

not supplied

Ref. No. Part No. Description Remark

1 3-047-852-01 DAMPER (T)
2 3-237-553-11 CASE (LOWER. T)

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

4 X-3375-357-1 ARM (FLT) ASSY
5 1-684-650-12 JACK BOARD

6 3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
7 A-3274-196-A MAIN BOARD, COMPLETE
8 1-676-340-12 JACK FLEXIBLE BOARD
9 1-676-339-12 MAIN FLEXIBLE BOARD
10 1-684-651-12 SWITCH BOARD

12 X-3381-744-1 DOOR (M) ASSY
13 3-229-226-21 PANEL, FRONT
14 3-022-007-02 BUTTON (EJT) (Z)

22

4

Ref. No. Part No. Description Remark

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 3-047-886-11 LEVER (FLT. 838)

20 3-237-609-11 CASE (UPPER. T)
22 3-935-636-11 SCREW (FP)
23 X-3375-360-2 ARM (FRT) ASSY
RV202 1-227-137-11 RES, VAR, SLIDE 10K

#2 7-685-792-09 SCREW +PTT 2.6X6 (S)

#3 7-685-781-09 SCREW +PTT 2X4 (S)

not supplied

23

not supplied

1

2

not supplied

(ELEVATOR HEIGHT SENSOR)

9

CDX-757MX

JACK MAIN

• 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

1-684-650-12 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 1-779-077-51 PLUG, CONNECTOR (CONTROL, AUDIO OUT)
CNJ901 1-778-775-21 CONNECTOR, FPC 13P

< DIODE >

D901 8-719-067-40 DIODE STZ6.8N-T146

< FERRITE BEAD >

FB901 1-469-179-21 FERRITE
FB902 1-469-179-21 FERRITE
FB903 1-469-179-21 FERRITE

< FUSE >

PS901 1-576-592-21 FUSE (SMD) (5A/24V)

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

A-3274-196-A MAIN BOARD, COMPLETE

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

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

< CAPACITOR >

C01 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
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
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

• 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

C113 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C114 1-164-156-11 CERAMIC CHIP 0.1uF 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 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C205 1-164-156-11 CERAMIC CHIP 0.1uF 25V
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
C305 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C306 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C307 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C309 1-164-156-11 CERAMIC CHIP 0.1uF 25V

C310 1-104-656-11 ELECT 2200uF 20% 6.3V
C311 1-126-382-11 ELECT 100uF 20% 16V
C312 1-164-156-11 CERAMIC CHIP 0.1uF 25V
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 1-125-710-11 DOUBLE LAYER 0.1F 5.5V
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

C401 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C403 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C404 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C405 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C406 1-164-230-11 CERAMIC CHIP 220PF 5% 50V

C407 1-115-651-11 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

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

10

CDX-757MX

MAIN

Ref. No. Part No. Description Remark

C501 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C502 1-115-650-11 ELECT 47uF 20% 16V
C503 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C504 1-115-650-11 ELECT 47uF 20% 16V

C505 1-115-651-11 ELECT 100uF 20% 16V
C601 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C602 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C603 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C604 1-126-791-11 ELECT 10uF 20% 16V

C605 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C606 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C607 1-128-934-11 CERAMIC CHIP 0.33uF 20% 10V
C608 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C609 1-115-416-11 CERAMIC CHIP 0.001uF 5% 25V

C610 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C611 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C612 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C613 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C614 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C615 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C616 1-162-927-11 CERAMIC CHIP 100PF 5% 50V

< DIODE >

D201 8-719-050-38 DIODE M1MA152WK-T1
D202 8-719-988-61 DIODE 1SS355TE-17
D301 6-500-054-01 DIODE RB481YT2R
D302 8-719-056-93 DIODE MM3Z18VST1
D303 8-719-056-93 DIODE MM3Z18VST1

D306 8-719-056-83 DIODE MM3Z6V8ST1
D310 8-719-976-99 DIODE MM3Z5V1ST1

Ref. No. Part No. Description Remark

Q402 8-729-424-08 TRANSISTOR MUN2111T1
Q410 8-729-920-21 TRANSISTOR DTC314TK-T-146
Q420 8-729-920-21 TRANSISTOR DTC314TK-T-146

< RESISTOR >

R101 1-216-839-11 METAL CHIP 33K 5% 1/10W
R102 1-216-833-11 METAL CHIP 10K 5% 1/10W
R103 1-216-827-11 METAL CHIP 3.3K 5% 1/10W
R104 1-216-827-11 METAL CHIP 3.3K 5% 1/10W
R105 1-218-917-11 METAL CHIP 820K 5% 1/10W

R106 1-216-853-11 METAL CHIP 470K 5% 1/10W
R107 1-216-833-11 METAL CHIP 10K 5% 1/10W
R108 1-216-853-11 METAL CHIP 470K 5% 1/10W
R109 1-216-857-11 METAL CHIP 1M 5% 1/10W
R110 1-216-813-11 METAL CHIP 220 5% 1/10W

R111 1-216-815-11 METAL CHIP 330 5% 1/10W
R112 1-216-809-11 METAL CHIP 100 5% 1/10W
R113 1-216-809-11 METAL CHIP 100 5% 1/10W
R114 1-216-809-11 METAL CHIP 100 5% 1/10W
R115 1-216-809-11 METAL CHIP 100 5% 1/10W

R116 1-216-821-11 METAL CHIP 1K 5% 1/10W
R122 1-216-839-11 METAL CHIP 33K 5% 1/10W
R123 1-216-845-11 METAL CHIP 100K 5% 1/10W
R125 1-216-839-11 METAL CHIP 33K 5% 1/10W
R201 1-216-845-11 METAL CHIP 100K 5% 1/10W

R202 1-216-845-11 METAL CHIP 100K 5% 1/10W
R203 1-216-845-11 METAL CHIP 100K 5% 1/10W
R204 1-216-864-11 METAL CHIP 0 5% 1/10W
R206 1-216-845-11 METAL CHIP 100K 5% 1/10W
R207 1-216-821-11 METAL CHIP 1K 5% 1/10W

< IC >

IC101 8-752-398-18 IC CXD3027R
IC102 8-759-538-44 IC MSM51V17400D-10TK-FS
IC201 6-801-496-01 IC HD6432238RWN21TEIV
IC202 8-759-660-38 IC BR24C16FJ-E2
IC301 8-759-527-33 IC LB1930M-TLM

IC302 8-759-829-46 IC BA8272AFV-E2
IC303 6-702-148-01 IC XC61CN2702NR
IC304 6-702-147-01 IC NJM2396F08
IC305 6-702-146-01 IC NJM2396F05
IC306 8-759-444-93 IC RH5RL33AA-T1

IC401 8-759-662-11 IC TLV2362IPWR
IC501 8-759-825-13 IC PCM1748E/2K
IC601 6-700-297-01 IC CXD9684R-004
IC602 6-700-296-01 IC W24L010AT-12-EL15
IC603 8-759-645-31 IC RN5RZ25BA-TL

IC604 8-759-196-96 IC TC7SH08FU-TE85R
IC605 8-759-196-96 IC TC7SH08FU-TE85R

< TRANSISTOR >

Q202 8-729-421-22 TRANSISTOR MUN2211T1
Q301 8-729-010-25 TRANSISTOR MSD601-RT1
Q302 8-729-028-62 TRANSISTOR DTA115EKA-T146
Q303 8-729-922-47 TRANSISTOR 2SB1184-TLR
Q304 8-729-010-25 TRANSISTOR MSD601-RT1

R208 1-216-845-11 METAL CHIP 100K 5% 1/10W
R209 1-216-853-11 METAL CHIP 470K 5% 1/10W
R210 1-216-833-11 METAL CHIP 10K 5% 1/10W
R211 1-216-845-11 METAL CHIP 100K 5% 1/10W
R212 1-216-821-11 METAL CHIP 1K 5% 1/10W

R213 1-216-821-11 METAL CHIP 1K 5% 1/10W
R215 1-216-821-11 METAL CHIP 1K 5% 1/10W
R301 1-216-841-11 METAL CHIP 47K 5% 1/10W
R302 1-216-853-11 METAL CHIP 470K 5% 1/10W
R303 1-216-845-11 METAL CHIP 100K 5% 1/10W

R304 1-216-857-11 METAL CHIP 1M 5% 1/10W
R305 1-216-845-11 METAL CHIP 100K 5% 1/10W
R306 1-216-841-11 METAL CHIP 47K 5% 1/10W
R307 1-218-739-11 METAL CHIP 91K 5% 1/10W
R310 1-216-838-11 METAL CHIP 27K 5% 1/10W

R311 1-216-845-11 METAL CHIP 100K 5% 1/10W
R401 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R402 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R403 1-216-833-11 METAL CHIP 10K 5% 1/10W
R404 1-216-833-11 METAL CHIP 10K 5% 1/10W

R405 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R406 1-218-871-11 METAL CHIP 10K 0.5% 1/10W
R411 1-216-847-11 METAL CHIP 150K 5% 1/10W
R412 1-216-847-11 METAL CHIP 150K 5% 1/10W
R413 1-216-809-11 METAL CHIP 100 5% 1/10W

R414 1-216-809-11 METAL CHIP 100 5% 1/10W
R415 1-216-845-11 METAL CHIP 100K 5% 1/10W

11

CDX-757MX

MAIN SWITCH

Ref. No. Part No. Description Remark

R416 1-216-845-11 METAL CHIP 100K 5% 1/10W
R501 1-216-813-11 METAL CHIP 220 5% 1/10W
R601 1-216-821-11 METAL CHIP 1K 5% 1/10W

R602 1-216-845-11 METAL CHIP 100K 5% 1/10W
R603 1-216-809-11 METAL CHIP 100 5% 1/10W
R607 1-216-814-11 METAL CHIP 270 5% 1/10W
R608 1-216-814-11 METAL CHIP 270 5% 1/10W
R610 1-216-857-11 METAL CHIP 1M 5% 1/10W

R612 1-216-809-11 METAL CHIP 100 5% 1/10W
R613 1-216-821-11 METAL CHIP 1K 5% 1/10W

< COMPOSITION CIRCUIT BLOCK >

RB601 1-233-810-21 RES, NETWORK 100K (3216)
RB602 1-233-810-21 RES, NETWORK 100K (3216)
RB603 1-233-810-21 RES, NETWORK 100K (3216)
RB604 1-233-810-21 RES, NETWORK 100K (3216)

< VARIABLE RESISTOR >

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

< SWITCH >

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

Ref. No. Part No. Description Remark

< VIBRATOR >

X101 1-795-577-21 VIBRATOR, CERAMIC (16.9344MHz)
X201 1-767-133-21 VIBRATOR, CERAMIC (12.288MHz)

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

1-684-651-12 SWITCH BOARD

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

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

12

MEMO

CDX-757MX

13

CDX-757MX

REVISION HISTORY

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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

1.0 2002.03 New

1.1 2002.08 Change of MAIN/SWITCH/JACK boards (Suffix-12) (ECN-CSA06141)