SONY CDX-CA710X, CDX- CA790X Service Manual

CDX-CA710X/CA790X

SERVICE MANUAL

Ver 1.0 2002. 11

• The tuner and CD sections have no adjustments.

AUDIO POWER SPECIFICATIONS (US Model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION

23.2 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 5% total harmonic distortion.

SPECIFICATIONS

CD player section

Signal-to-noise ratio 90 dB Frequency response 10 – 20,000 Hz Wow and flutter Below measurable limit

Tuner section

Tuning range 87.5 – 107.9 MHz Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Usable sensitivity 9 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 67 dB (stereo),

69 dB (mono)

Harmonic distortion at 1 kHz

0.5% (stereo),

0.3% (mono) Separation 35 dB at 1 kHz Frequency response 30 – 15,000 Hz

Tuning range 530 – 1,710 kHz Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV

US Model

Canadian Model

CDX-CA710X

E Model

CDX-CA790X

Model Name Using Similar Mechanism CDX-CA720X/CA730X CD Drive Mechanism Type MG-393XA-121//Q Optical Pick-up Name KSS-720A

Power amplifier section

Outputs Speaker outputs

(sure seal connectors) Speaker impedance 4 – 8 ohms Maximum power output 52 W × 4 (at 4 ohms)

General

Outputs Audio outputs (rear)

Power antenna relay control terminal

Power amplifier control terminal Inputs Telephone ATT control terminal

BUS control input terminal

BUS audio input terminal

Remote controller input terminal

Antenna input terminal Tone controls Bass ±10 dB at 62 Hz

Treble ±10 dB at 16 kHz Loudness +8 dB at 100 Hz

+2 dB at 10 kHz

– Continued on next page –

9-874-227-01

FM/AM COMPACT DISC PLAYER

Sony Corporation

e Vehicle Company Published by Sony Engineering Corporation

CDX-CA710X/CA790X

Power requirements 12 V DC car battery

(negative ground)

Dimensions Approx. 178 × 50 × 177 mm

(7 1/8 × 2 × 7 in.) (w/h/d)

Mounting dimensions Approx. 182 × 53 × 161 mm

(7 1/4 × 2 1/8 × 6 3/8 in.) (w/h/d)

Mass Approx. 1.2 kg

(2 lb. 10 oz.)

Supplied accessories Parts for installation and connections (1 set)

Front panel case (1) Card remote commander RM-X118

Design and specifications are subject to change without notice.

SERVICE NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP 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 pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

Notes on Chip Component Replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

E Model

CLASS 1

CAUTION

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

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.

optical pick-up bloc

semi-fixed resistor

TEST DISCS

This set can playback CD-R and CD-ROM discs. The following test discs should be used to check the capability:

CD-R test disc TCD-R082LMT (Part No. J-2502-063-1) CD-RW test disc TCD-W082L (Part No. J-2502-063-2)

Notes on CD-R/CD-RW discs

• You can play CD-Rs (recordable CDs)/CD-RWs (rewritable CDs) designed for audio use on this unit. Look for these marks to distinguish CD-Rs/CD-RWs for audio use.

LASER PRODUCT

This label is located on the bottom of the chassis.

INVISIBLE LASER RADIATION WHEN OPENCAUTION

DO NOT STARE INTO BEAM OR

VIEW DIRECTLY WITH OPTICAL INSTRUMENTS

This label is located on the drive unit’s internal chassis.

When replacing the chassis (T.U) of mechanism deck which have the “CAUTION LABEL” attached, please be sure to put a new LABEL (OP CAUTION) (3-223-913-01) to the chassis (T.U).

SAFETY-RELATED COMPONENT WARNING!!

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

These marks denote that a disc is not for audio use.

• 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/a CD-RW that is not finalized∗.

∗ A process necessary for a recorded CD-R/CD-RW disc to be

played on the audio CD player.

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.

UNLEADED SOLDER

•

Boards requiring use of unleaded solder are printed with the lead free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful!

• Strong viscosity Unleaded solder is more viscous (sticky, less prone to f low) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

CDX-CA710X/CA790X

EXTENSION CABLE AND SERVICE POSITION

When repairing or servicing this set, connect the jig (extension cable) as shown below.

• Connect the MAIN board (CNP301) and the SER V O board (CN1) with the extension cable (Part No. J-2502-011-1).

MAIN BOARD CNP301

SERVO BOARD CN1

J-2502-011-1

CDX-CA710X/CA790X

1. GENERAL

Location of controls................................................................. 5

Connections ............................................................................. 6

2. DISASSEMBLY

2-1. Sub Panel Assy .................................................................... 7

2-2. CD Mechanism Block ......................................................... 8

2-3. Main Board ......................................................................... 8

2-4. Heat Sink, MJ Board ........................................................... 9

2-5. Chassis (T.U) Assy .............................................................. 9

2-6. Disc In Board .................................................................... 10

2-7. Servo Board....................................................................... 10

2-8. Shaft Roller Assy .............................................................. 11

2-9. Floating Block Assy .......................................................... 11

2-10. Optical Pick-up Block ....................................................... 12

3. DIAGRAMS

3-1. IC Pin Description............................................................. 13

3-2. Block Diagram –CD Section–........................................... 15

3-3. Block Diagram –Tuner Section–....................................... 16

3-4. Block Diagram –Display Section–.................................... 17

3-5. Circuit Boards Location .................................................... 17

3-6. Printed Wiring Boards –CD Mechanism Section–............ 18

3-7. Schematic Diagram –CD Mechanism Section– ................20

3-8. Printed Wiring Boards –Main Section– ............................ 21

3-9. Schematic Diagram –Main Section (1/2)– ........................22

3-10. Schematic Diagram –Main Section (2/2)– ........................23

3-11. Printed Wiring Board –Relay Section– ............................. 24

3-12. Printed Wiring Board –Key Section–................................ 25

3-13. Schematic Diagram –Key Section–................................... 26

3-14. IC Block Diagrams............................................................ 27

4. EXPLODED VIEWS

4-1. Chassis Section ................................................................. 31

4-2. Main Board Section .......................................................... 32

4-3. Front panel Section ........................................................... 33

4-4. CD Mechanism Section (1) ...............................................34

4-5. CD Mechanism Section (2) ...............................................35

4-6. CD Mechanism Section (3) ...............................................36

5. ELECTRICAL PARTS LIST......................................... 37

SECTION 1

GENERAL

CDX-CA710X/CA790X

This section is extracted from instruction manual.

Location of controls

SOURCE

DSO

Refer to the pages listed for details.

a DSO button 20 b MODE button

To c hange the operation.

c DSPL (display mode change) button

10, 12

d Volume control dial e Display window f Z (eject) button (located on the front side

of the unit, behind the front panel) 9

g MENU button

To d is play the menus.

h LIST button 12, 15 i OPEN button 8, 9 j OFF (Stop/Power off) button* 8, 9 k SOURCE (Power on/Radio/CD/MD)

button

To s el ec t the source.

SEEK

EQ7

CDX-CA710X

l SCRL (scroll) button 10 m RESET button (located on the front side of

the unit, behind the front panel) 7

n Recepto r for the card remote

commander

o SOUND button 17 p ENTER button

To ente r a setting.

q EQ

Warning when installing in a car without an ACC (accessory) position on the ignition switch

After turning off the ignition, be sure to press and hold disappears.

Otherwise, the display does not turn off and this causes b

7 button

(OFF)

on the unit until the display

attery drain.

SEEK

EQ7

(DISC/PRESET)

(+): to select upwards

(SEEK)

(–): to select

leftwards/

In menu mode, the currently selectable button (s) of these four are indicated with a “

r DISC/PRESET buttons (+/–)

To receive preset stations, cha ng e th e disc* skip albums*

When an optional CD/MD unit is connected.

Available only when optional CD unit wit MP3 file control function is connected.

s SEEK buttons (–/+)

To skip tracks, fast-forward, reverse a trac k, tune in stations automatically, find a station manually, and select a setting.

(DISC/PRESET)

(–): to select downwards

, and select a menu.

(SEEK)

(+): to select

SEEK

rightwards/

” in the display.

Card remote commander RM-X118

DSPL

REP SHUF

–

SEEK

SOUND

The corresponding buttons of the card remote commander control the same functions as those on this unit.

a DSPL button b Number buttons

(1) REP (2) SHUF

To store stations, receive stored stations.

c DSO button d MENU button

h the

e SOURCE button f SEEK (</,) buttons g SOUND button h OFF button i VOL (+/–) buttons j EQ7 button k MODE button l LIST button m DISC (M/m) buttons n ENTER button o AT T button

Note

If the display disappears by pressing be operated with the card remote commander unless

(SOURCE)

on the unit is pressed, or a di s c i s in se rted

to ac

tivate the unit first.

Tip

See “Replacing the lithium battery” on page 21 for details on how to replace the batteries.

253

MODE

DISC

SOURCE

DISC

VOL

EQ7DSO

LIST

SEEK

–

ENTER

AT TOFF

(OFF)

, it cannot

CDX-CA710X/CA790X

Connections

from car antenna à partir de l’antenne de la voiture

Left Gauche

Right Droit

Left Gauche

Right Droit

BUS AUDIO IN

AMP REM

Max. supply current 0.3 A Courant max. fourni 0,3 A

BUS

AUDIO

AUDIO OUT

REAR

Blue/white striped Rayé bleu/blanc

White Blanc

White/black striped Rayé blanc/noir

Gray Gris

Gray/black striped Rayé gris/noir

Green Vert

Green/black striped Rayé vert/noir

Purple Mauve

Purple/black striped Rayé mauve/noir

AUDIO

OUT

REAR FRONT

AUDIO

OUT

Fuse (10 A) Fusible (10 A)

Supplied with XA-C30 Fourni avec le XA-C30

REMOTE

BUS

CONTROL IN

Black Noir

Blue Bleu

Light blue Bleu ciel

Red Rouge

Yellow Jaune

Source selector

(not supplied)

Sélecteur de source

(non fourni)

Max. supply current 0.1 A Courant max. fourni 0,1 A

ANT REM

ATT

XA-C30

Supplied with the CD/MD changer Fourni avec le changeur de CD/MD

RCA pin cord (not supplied)

Cordon à broche RCA (non fourni)

Insert with the cord downwards.

Insérez avec le câble vers le bas.

Connection diagram (3)

To a metal surface of the car

First connect the black ground lead, then connect the yellow and red power input leads.

To the power antenna control lead or power supply lead of antenna booster amplifier

Notes

• It is not necessary to connect this lead if there is no power antenna or antenna booster, or with a manually-operated telescopic antenna.

•When your car has a built-in FM/AM antenna in the rear/side glass, see “Notes on the control and power supply leads.”

To AMP REMOTE IN of an optional power amplifier

This connection is only for amplifiers. Connecting any other system may damage the unit.

To the interface cable of a car telephone

To the +12 V power terminal which is energized in the accessory position of the ignition key switch

Notes

• If there is no accessory position, connect to the +12 V power (battery) terminal which is energized at all times. Be sure to connect the black ground lead to a metal surface of the car first.

•When your car has a built-in FM/AM antenna in the rear/side glass, see “Notes on the control and power supply leads.”

To the +12 V power terminal which is energized at all times

Be sure to connect the black ground lead to a metal surface of the car first.

Notes on the control and power supply leads

• The power antenna control lead (blue) supplies +12 V DC when you turn on the tuner.

•When your car has built-in FM/AM antenna in the rear/ side glass, connect the power antenna control lead (blue) or the accessory power input lead (red) to the power terminal of the existing antenna booster. For details, consult your dealer.

•A power antenna without relay box cannot be used with this unit.

Memory hold connection

When the yellow power input lead is connected, power will always be supplied to the memory circuit even when the ignition key is turned off.

Notes on speaker connection

•Before connecting the speakers, tur n the unit off.

• Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage.

• Do not connect the speaker terminals to the car chassis, or connect the terminals of the right speakers with those of the left speaker.

• Do not connect the ground lead of this unit to the negative (–) terminal of the speaker.

• Do not attempt to connect the speakers in parallel.

• Connect only passive speakers. Connecting active speakers (with built-in amplifiers) to the speaker terminals may damage the unit.

•To avoid a malfunction, do not use the built-in speaker wires installed in your car if the unit shares a common negative (–) lead for the right and left speakers.

• Do not connect the unit’s speaker cords to each other.

Note on connection

If speaker and amplifier are not connected correctly, "FAILURE" appears in the display. In this case, make sure the speaker and amplifier are connected correctly.

Schéma de raccordement (3)

À un point métallique de la voiture

Branchez d‘abord le fil de masse noir et, ensuite, les fils d‘entrée d‘alimentation jaune et rouge.

Vers le fil de commande de l‘antenne électrique ou le fil d‘alimentation de l‘amplificateur d‘antenne

Remarques

• Il n'est pas nécessaire de raccorder ce fil s'il n'y a pas d'antenne électrique ni d'amplificateur d'antenne, ou avec une antenne télescopique manuelle.

• Si votre voiture est équipée d'une antenne FM/AM intégrée dans la vitre arrière/latérale, voir “Remarques sur les fils de commande et d'alimentation”.

Au niveau du AMP REMOTE IN de l’amplificateur de puissance en option

Ce raccordement s’applique uniquement aux amplificateurs. Le branchement de tout autre système risque d’endommager l’appareil.

Vers le cordon de liaison d’un téléphone de voiture

À la borne +12 V qui est alimentée quand la clé de contact est sur la position accessoires

Remarques

• S'il n'y a pas de position accessoires, raccordez la borne d'alimentation (batterie) +12 V qui est alimentée en permanence. Raccordez d‘abord le fil de masse noir à un point métallique de la voiture.

• Si votre voiture est équipée d'une antenne FM/AM intégrée dans la vitre arrière/latérale, voir “Remarques sur les fils de commande et d'alimentation”.

la borne +12 V qui est alimentée en

permanence

Raccordez d‘abord le fil de masse noir à un point métallique de la voiture.

Remarques sur les fils de commande et d'alimentation

• Le fil de commande de l’antenne électr ique (bleu) fournit une alimentation de + 12 V CC lorsque vous mettez la radio sous tension.

• Lorsque votre voiture est équipée d’une antenne FM/ AM intégrée dans la vitre arrière/latérale, raccordez la sortie de commande de l’antenne (bleu) ou l’entrée d’alimentation des accessoires (rouge) à la borne de l’amplificateur d’antenne existant. Pour plus de détails, consultez votre détaillant.

•Une antenne électrique sans boitier de relais ne peut pas être utilisée avec cet appareil.

Raccordement pour la conservation de la mémoire

Lorsque le fil d’entrée d’alimentation jaune est raccordé, le circuit de la mémoire est alimenté en permanence même si la clé de contact est sur la position d’arrêt.

Remarques sur le raccordement des haut-parleurs

•Avant de raccorder les haut-parleurs, mettez l’appareil hors tension.

•Utilisez des haut-par leurs ayant une impédance de 4 à 8ohms avec une capacité électrique adéquate pour éviter de les endommager.

•Ne raccordez pas les bornes du système de hautparleur au châssis de la voiture et ne raccordez pas les bornes du haut-parleur droit à celles du haut-parleur gauche.

•Ne raccordez pas le câble de masse de cet appareil à la borne négative (–) de l’enceinte.

•N’essayez pas de raccorder les haut-parleurs en parallèle.

•Raccordez uniquement des haut-parleurs passifs. Le raccordement de haut-parleurs actifs (avec amplificateurs intégrés) aux bornes des haut-parleurs peut endommager l’appareil.

•Pour éviter tout dysfonctionnement, n’utilisez pas les fils des haut-parleurs intégrés installés dans votre voiture si l’appareil partage un fil négatif commun (–) pour les haut-parleurs droit et gauche.

•Ne raccordez pas entre eux les cordons des hautparleurs de l’appareil.

Remarque sur le raccordement

Si les enceintes et l’amplificateur ne sont pas raccordés correctement, le message “FAILURE” s’affiche. Dans ce cas, assurez-vous que les enceintes et l’amplificateur sont bien raccordés.

SECTION 2

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

SET

2-5. CHASSIS (T.U) ASSY

2-1. SUB PANEL ASSY

(Page 7)

(Page 9)

CDX-CA710X/CA790X

2-2. CD MECHANISM BLOCK

(Page 8)

2-3. MAIN BOARD

(Page 8)

2-4. HEAT SINK, MJ BOARD

(Page 9)

2-6. DISC IN BOARD

(Page 10)

2-8. SHAFT ROLLER ASSY

(Page 11)

2-9. FLOATING BLOCK ASSY

(Page 11)

2-10. OPTICAL PICK-UP BLOCK

(Page 12)

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

2-1. SUB PANEL ASSY

2-7. SERVO BOARD

(Page 10)

PTT 2.6x6

claws

sub panel assy

CN351

claws

CDX-CA710X/CA790X

2-2. CD MECHANISM BLOCK

CD mechanism block

PTT 2.6x6

bracket (CD)

PTT 2.6x

2-3. MAIN BOARD

PTT 2.6x6

MAIN board

PTT 2.6x6

CNP301

PTT 2.6x6

PTT 2.6x

PTT 2.6x6

2-4. HEAT SINK, MJ BOARD

MJ board

CDX-CA710X/CA790X

heat sink

PTT 2.6x

2-5. CHASSIS (T.U) ASSY

Unsolder the

lead wires.

P 2x3

PTT 2.6x8

PTT 2.6x10

P 2x3

chassis (T.U) assy

black red white

CDX-CA710X/CA790X

2-6. DISC IN BOARD

guide (disc)

PS 2x3

DISC IN board

2-7. SERVO BOARD

Removal the solders.

P 2x3

claws

PS 2x4

CN3

SERVO board

PS 2x4

connector

loading motor assy

optical pick-up block

2-8. SHAFT ROLLER ASSY

• When installing, take note of the positions

arm (roller) and washers. (Fig. 1)

retaing ring (roller)

bearing (roller)

retaing ring (roller)

washer (RA)

arm

shaft roller assy

arm (roller T)

washer (RA)

Fig. 1

CDX-CA710X/CA790X

bearing (roller)

arm

2-9. FLOATING BLOCK ASSY

compression spring (FL)

tension spring (KF1)

tension spring (RA3)

floating block assy

compression spring (FL)

tension spring (KR1)

Fit lever (D) in the

direction of the arrow.

Turn loading ring in the

direction of the arrow.

damper (T)

CDX-CA710X/CA790X

2-10. OPTICAL PICK-UP BLOCK

P 2x3

sled motor assy

shaft (feed) assy

P 2x3

leaf spring (feed)

optical pick-up block

SECTION 3

DIAGRAMS

3-1. IC PIN DESCRIPTION

• IC303 MN101C49KSD (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 VREF– — A/D converter power supply (–) pin 2LVDATA I Spectrum analyzer data input from electronic volume IC. 3 VSM I S-meter voltage detection input 4QUALITY I Noise detection input

5, 6 KEYIN1, 0 I Key input 1, 0

7 RCIN0 I Rotary commander key input

8, 9 NIL I Not used. (Fixed at L in this set)

10 VREF+ — A/D converter power supply (+) pin (+5 V) 11 VDD — Power supply pin (+5 V) 12 OSCOUT O Main clock output (18.43 MHz) 13 OSCIN I Main clock input (18.43 MHz) 14 VSS — Ground 15 XIN I Sub clock input (32.768 kHz) 16 XOUT O Sub clock output (32.768 kHz) 17 MMOD I Memory mode select input (Fixed at L in this set) 18 LCDSO O Serial data output for LCD driver IC. 19 LCDCE O Chip enable output for LCD driver IC. 20 LCDCKO O Serial clock output for LCD driver IC. 21 CD_TSO O Serial data output for CD servo IC. 22 CD_TSI I Serial data input from CD servo IC. 23 CD_TCKO O Serial clock output for CD servo IC. 24 SYSRST O System reset output 25 BUSON O BUS ON output 26 KEYACK I Key acknowledge detection input 27 DAVN I Not used. (Open) 28 BUIN I Backup power supply input 29 SIRCS I SIRCS input 30 TUATTIN I Tuner attenuator control input 31 CD_PACK I CD text pack synchronization signal input from CD servo IC. 32 VDD2 — Power supply pin (+5 V) 33 RESET I Microcomputer reset input 34 NOSESW I Front panel attachment detection input 35 BEEP O Beep output 36 DSTSEL2 I Not used. (Open) 37 TESTIN I Test mode detection input 38 ACCIN I Accessory power supply detection input 39 NCO (VCC) O Not used. (Open) 40 TELATT I Telephone attenuator detection input 41 NCO (VCC) I Not used. (Fixed at H in this set) 42 UNISO O SONY-BUS data output 43 UNISI I SONY-BUS data input 44 UNICKO O SONY-BUS clock output 45 I2C_SIO I/O I2C BUS serial data input/output 46 NCO O Not used. (Open) 47 I2C_CKO O I2C BUS serial clock output 48 STB O Standby control output for power amp IC. 49 DIAG I Mode input from power amp IC. 50 SELFSW I CD mechanism deck Self switch detection input

CDX-CA710X/CA790X

Pin No. Pin Name I/O Pin Description

51 TSTB O CD text parameter strobe output for CD servo IC. 52 RFOK I RFOK signal input from CD servo IC. 53 CD_RST O Reset signal output for CD servo IC. 54 A0 O Command/parameter discrimination signal output for CD servo IC. 55 STB O Data strobe signal output for CD servo IC. 56 X_EN O Not used. (Open) 57 LIMIT I CD mechanism deck Limit switch detection input 58 PH1 I CD mechanism deck PH1 detection input (Not used in this set) 59 D_SW I CD mechanism deck Down switch detection input 60 INSW I CD mechanism deck Disc in switch detection input 61 NC (PH3) O CD mechanism deck PH3 detection input (Not used in this set) 62 CD_LM_LO O CD mechanism deck loading motor control output (Loading direction) 63 CD_LM_EJ O CD mechanism deck loading motor control output (Eject direction)

64, 65 NCO O Not used. (Open)

66 AMPATT O Power amplifier attenuator control output 67 AMPON O Power amplifier standby control output 68 TUON O Tuner power supply control output 69 ATT O System attenuator control output 70 VOLATT O Electronic volume attenuator control output 71 LVCLK O Spectrum analyzer data output for electronic volume IC. 72 AUX_ON O Not used. (Open)

73 – 75 NCO O Not used. (Open)

76 DSTSEL0 I Not used. (Open) 77 DSTSEL1 I Not used. (Open) 78 NCO O Not used. (Open) 79 XCD_ON O Not used. (Open)

80 – 83 NCO O Not used. (Open)

84 NS_MASK O Not used. (Open) 85 DOORIND O Sub panel power supply control output 86 EE_SIO I/O EEPROM serial data input/output 87 EE_CKO O EEPROM serial clock output 88 TUATT O Tuner attenuator control output 89 FLASH_W I Flash microcomputer write detection input 90 NCO O Not used. (Open) 91 AD_ON O Key power supply control output

92, 93 NCO O Not used. (Open)

94 DOORSW I Front panel OPEN/CLOSE detection input 95 DAVSS — D/A converter power supply (–) pin

96, 97 RE_IN1, 0 I Rotary encoder input 1, 0

98 RC_IN1 I Rotary commander SHIFT key input 99 RAMBU I Not used. (Fixed at L in this set)

100 DAVDD — D/A converter power supply (+) pin (+5 V)

+ 30 hidden pages

SONY CDX-CA710X, CDX- CA790X Service Manual

TABLE OF CONTENTS

GENERAL

DISASSEMBLY

sub panel assy

CD mechanism block

MAIN board

chassis (T.U) assy

DISC IN board

SERVO board

shaft roller assy

floating block assy

optical pick-up block

DIAGRAMS