CDX-424RF

SCHEMATIC DIAGRAM RF Section
See page 31 for Waveforms.
See page 32 for IC Block Diagrams.

(Page 27)

The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi.

SERVICE MANUAL

US Model Canadian Model E Model
Model Name Using Similar Mechanism CD Drive Mechanism Type Optical Pick-up Name
CDX-505RF MG-250C-137 KSS-521A/J2N

SPECIFICATIONS

COMPACT DISC CHANGER SYSTEM

MICROFILM

7-6. SCHEMATIC DIAGRAM MAIN Section (1/2) See page 31 for Waveforms. See page 33 for IC Block Diagrams.

(Page 22)

7-7. SCHEMATIC DIAGRAM MAIN Section (2/2) See page 31 for Waveforms. See page 33 for IC Block Diagrams.

Waveforms RF Board

1 IC11 # (RF O) 500 mV/DIV, 500 ns/DIV

MAIN Board (1/2)

1 IC101 @ (MDP)

MAIN Board (2/2)

6 IC401 ! (MCK)
IC Block Diagrams RF Board IC11 CXA1992BR
RFTC RF M PD1 RF O CC1 PD2 PD CP CB CC2 LD FOK RF I

2.5 Vp-p

6 Vp-p 1.4 Vp-p
PD 2 I-V AMP PD 1 I-V AMP PD AMP LD AMP RF SUMMING AMP

FOCUS OK COMPARATOR

2 IC(FEI) 50 mV/DIV, 1 s/DIV 2 IC101 % (LRCK)

59.5 ns

7 IC401 ! (XO)

FE 40 BIAS

IFB1 IFB6
LASER POWER CONTROL PEAK/BOTTOM HOLD PEAK/BOTTOM HOLD FOCUS BIAS WINDOW COMPARATOR

FOH FOL

MIRR COMPARATOR DEFECT AMP

IIL TTL

F I-V AMP E I-V AMP TGFL TRACKING GAIN WINDOW COMPARATOR TGH TGL BALH BALL ATSC

6 Vp-p

5.8 Vp-p

FOCUS ERROR AMP

Approx. 110 mVp-p

22.7 s

3 IC11 $ (TEI) 200 mV/DIV, 500 s/DIV 3 IC101 % (BCK)

E 42 EI 43 VEE 44 TEO 45

IIL TTL IIC DATA REGISTER, INPUT SHIFT REGISTER, ADDRESS DECODER, SENSE SELECTOR, OUTPUT DECODER TTL IIL

26 SENSSENSC. OUT

58.6 s

8 IC401 @ (BCK)

TOG1 TOG4 BAL1 BAL4

XRST DATA XLT CLK LOCK

TG1 TG2
IFB1 IFB6 BAL1 BAL4 TOG1 TOG4

TM1 TM7

PS1 PS4

FS1 FS4

LPFI 46 TEI 47
E-F BALANCE WINDOW COMPARATOR ATSC WINDOW COMPARATOR TZC COMPARATOR TM1

VCC VCC ISET

18 VCC

6.2 Vp-p

7.6 Vp-p

ATSC 48

17 ISET

Approx. 280 mVp-p

472 ns

4 IC101 * (XTAI)

TZC 49
16 SL O 15 SL M TRACKING PHASE COMPENSATION

TDFCT 50

9 IC401 @ (LRCK)

VC 51 FZC 52

TG1 VCC CENTER VOLTAGE GENERATOR FZC COMPARATOR FOCUS PHASE COMPENSATION VCC VEE CHARGE UP FS1

VEE VCC TM7 TM4

7.3 Vp-p

FS2 FSET

59.2 ns

5 IC302 # (EXTAL)

3.8 Vp-p

124 ns

14 SL P

OUT1 1

BA6287F

7 OUT2

DRIVER TSD

DRIVER

CONTROL LOGIC

6 VREF

POWER SAVE FIN RIN
MAIN Board IC101 CXD2530Q
MNT0 MNT1 MNT3 XROF C2PO RFCK GFS XPCK XUGF GTOP VDD VSS TES4 BCK TES3 PCMD TESWFCK TES5 EMPH TES6 VDD VSS EXCK SBSO SCOR DOUT C4M FSTT XTSL 69 68
NC VSS VDD NC TES7 NC VSS XVDD XTAI XTAO XVSS VSS NC TES8 NC VDD VSS NC NC XRST

99 100

50 LRCK 49 WDCK ASYE ASYO ASYI BIAS RF AVDD CLTV AVSS FILI FILO PCO VCTL V16M VCKI VPCO1 VPCO2 TES1 TES0
ERROR CORRECTOR EFM DEMODULATOR

D/A INTERFACE

ASYMMETRY CORRECTOR

16K RAM

DIGITAL OUT

DIGITAL PLL

SUB CODE PROCESSOR
CLOCK GENERATOR TIMING LOGIC SERVO AUTO SEQUENCER

CPU INTERFACE

DIGITAL CLV
VDD VSS LMUT RMUT TES2 CKOUT
XLTO CLKO SPOA SPOB SPOC SPOD XLON FOK VDD VSS MON MDP MDS LOCK PWMI SQCK SQSO SENS DATA XLAT CLOK SEIN CNIN DATO

BUS ON VCC

BA8272F-E2
DATA OUT LINK OFF CLK OUT DATA IN RESET

RESET SWITCH

BUS ON OUT

BUS ON IN

BUS CLK

BUS DATA

BUS RESET

TC9464FN-EL

(EMP) SH DATA GNDX ZD (SM) ATT (BS) LA BCK HS MCK GNDD VDX XO

XI VDA

INTERFACE CIRCUIT
MICROCOMPUTER INTERFACE CIRCUIT
DIGITAL FILTER CIRCUIT ATTENUATOR OPERATIONAL CIRCUIT DEEMPHASIS FILTER CIRCUIT D- MODULATION CIRCUIT

TIMING GENERATOR

TEST CIRCUIT
OUTPUT CIRCUIT ANALOG FILTER

3-866-343-11 (1)

Compact Disc Changer System
Operating Instructions Manual de instrucciones

GB ES CT

For installation and connections, see the supplied installation/connections manual. Con respecto a la instalacin y a las conexiones, consulte el manual de instalacin/conexiones suministrado. w u sM uw u sv

CDX-424RF

1999 by Sony Corporation

Welcome!

Thank you for purchasing the SONY CD changer system. This unit lets you enjoy CD sound with the changer. You can use this unit with the FM receiver of your car audio.

Table of contents

Getting Started
Resetting the hideaway unit.. 4 Preparing the CD changer.. 4 Changing the transmitting frequency. 5

CD Changer

Listening to a CD.. Playing tracks in random order Shuffle Play.. Playing tracks repeatedly Repeat Play.. Changing the output level.. 7 7

Additional Information

Precautions... 8 Notes on compact discs.. 8 Maintenance.. 8 Location of controls.. 9 Specifications... 10 Troubleshooting guide.. 11 Index.. 12

2 Getting Started

Resetting the hideaway unit
Before operating the unit for the first time or after replacing the car battery, you must reset the hideaway unit. Press the RESET button with a pointed object, such as a ballpoint pen.

Unlock

Release, and slide open

RESET button

Preparing the CD changer
With the arrow side facing up

Disc magazine To remove

Labelled surface up
10 discs, one in each tray
Use the supplied disc magazine or the disc magazine XA-250. The disc magazine XA-10B can not be used with this unit. If you use any other magazine, it may cause a malfunction.
Notes To listen to an 8 cm CD, use the separately sold Sony CD, adapter CSA-8. Be sure to always use the specified adapter, as failing to do so may cause a malfunction of the unit. If you use any other adapter, the unit may not operate properly. When using the Sony CD adapter, make sure that the three catches on the adapter are firmly latched onto the 8 cm CD. Do not insert the Sony CD adapter CSA-8 in the magazine without a disc, malfunction may result.
Changing the transmitting frequency
Because this unit processes CD playback sound through an FM tuner, there may be interference noise during CD playback. In this case change the frequency of the modulated RF signal transmitted from hideaway unit. The initial setting is 88.3 MHz.
If the disc magazine does not lock properly Take out the disc magazine, press (EJECT), and reinsert it. Use the unit with the door closed Otherwise, foreign matter may enter the unit, and contaminate the lenses inside the CD changer.
Press (REP) for two seconds until frequency appears. Press either the left or right side of (AMS) to select the frequency. Each time you press (AMS), the frequency changes as follows: =: 88.3 MHz n 89.9 MHz n 89.7 MHz n 89.5 MHz n 89.3 MHz n 89.1 MHz n 88.9 MHz n 88.7 MHz n 88.5 MHz n 88.3 MHz +: 88.3 MHz n 88.5 MHz n 88.7 MHz n 88.9 MHz n 89.1 MHz n 89.3 MHz n 89.5 MHz n 89.7 MHz n 89.9 MHz n 88.3 MHz
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 a tray, otherwise the changer and the discs may be damaged. Do not drop the disc magazine or subject it to a violent shock.
Press (REP) for two seconds.

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.
Note Be sure to set the frequency of your FM tuner to that of the newly selected frequency.
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.

Listening to a CD

Turn on the FM tuner of the car audio. Adjust the selected transmitting frequency with the wired remote. (88.3 MHz/88.5 MHz/88.7 MHz/ 88.9 MHz/ 89.1 MHz/89.3 MHz/ 89.5 MHz/89.7 MHz/89.9 MHz) Press ^. CD playback starts.
Locating a specific disc Disc Select
During playback, press (DISC+) or (DISC) once for each disc you wish to skip.
To locate succeeding discs

To locate previous discs

Stopping CD play

Press (OFF).

Notes When CD playback is stopped, you may hear some noise from the speakers. To prevent this from happening, turn the volume down before stopping CD playback. If you turn off the ignition switch of your car without stopping CD playback, it will automatically resume CD playback from where it was stopped when you turn on the ignition switch again.
When the unit is used in a car without an accessory position on the ignition switch Be sure to press (OFF) on the wireless remote to turn the system off to avoid battery wear while the engine is not running. If the POWER SELECT switch on the hideaway unit is set to the OFF position and the display on the wired remote is turned off, you will not be able to start CD playback with the wireless remote. In this case, press ^ on the wired remote.
Listening to the radio or a tape
Be sure to stop CD playback before you start listening to the radio or a tape.

Note Be sure to stop CD playback, otherwise there may be some interference with radio reception.
Adjust the volume with the volume control on the car audio. All the tracks play from the beginning.
Locating a specific track Automatic Music Sensor (AMS)
During playback, press either side of (AMS) once for each track you wish to skip.
To locate previous tracks
To locate succeeding tracks
Locating a specific point in a track Manual Search
During playback, press and hold (DISC+) or (DISC). Release the button when you have found the desired part.

To search forward

To search backward
Playing tracks in random order Shuffle Play
You can select: SHUF 1 to play the tracks on the current disc in random order. SHUF 2 to play all the discs in random order. Press (SHUF) repeatedly until the desired setting appears (SHUF 1 or SHUF 2).
z SHUF 1 z SHUF 2 z Cancel (SHUF off)
Changing the output level
You can select the output level from the CD changer. Normally the system is used in the initial output level; change the level if necessary.
Press (REP) for two seconds. Press (REP) momentarily.

CD LEVEL

Shuffle play starts. To go back to the normal playback mode, press (SHUF) until SHUF disappears.

Initial setting

Press either the left or right side of (AMS) to select the output level.
To decrease the output level
Playing tracks repeatedly

Repeat Play

You can select: REP 1 to repeat the track. REP 2 to repeat the disc. Press (REP) repeatedly until the desired setting appears (REP 1 or REP 2).
z REP 1 z REP 2 z Cancel (REP off)
To increase the output level +:
Repeat play starts. To go back to the normal playback mode, press (REP) until REP disappears.

Precautions

If your car was parked in direct sunlight resulting in a considerable rise in temperature inside the car, allow the system to cool off before operating it. If no power is being supplied to the system, check the connections first. If everything is in order, check the fuse. Avoid installing the CD changer, wireless remote, and wired remote in places: subject to temperatures exceeding 55C. subject to direct sunlight. near heat sources (such as heaters). exposed to rain or moisture. exposed to excessive dust or dirt. subject to excessive vibration. If you have any questions or problems concerning your unit that are not covered in this manual, please consult your nearest Sony dealer.
Do not expose the discs to direct sunlight or heat sources such as hot air-ducts. Do not leave discs in a car parked in direct sunlight where there can be a considerable rise in the temperature inside the car.

Not this way

Before playing, clean the discs with an optional cleaning cloth. Wipe each disc in the direction of the arrows. Do not use solvents such as benzine, thinner, commercially available cleaners, or antistatic spray intended for analog discs.

This way

Moisture condensation

Notes on compact discs

A dirty or defective disc may cause sound drop-outs during playback. To enjoy optimum sound, handle the disc as follows. Handle the disc by its edge, and do not touch the unlabelled surface.
On a rainy day or in a very damp area, moisture may condense on the lenses inside the unit, and the unit will not operate properly. In this case, remove the disc magazine and wait for about an hour until the moisture has evaporated.

Maintenance

Fuse replacement
If the fuse blows, check the power connection and replace the fuse. If the fuse blows again after replacement, there may be an internal malfunction. In this case, consult your nearest Sony dealer.
Do not stick paper or tape on the discs.

Warning

Use the specified amperage fuse. Use of a higher amperage fuse may cause serious damage.

Location of controls

Wired remote (RM-X64)

CD DISC

REP 12 SHUF 12 TRACK

AMS OFF

Refer to the pages for details. 1 ( (play/pause) indication Lights during CD playback and flashes when the pause button is pressed. 2 REP (repeat play) indication 3 SHUF (shuffle play) indication 4 REP (repeat play/control mode set) button 5, ^ (play/pause) button 6 If pressed during playback, the CD will pause. If pressed again, playback will continue. 6 DISC (disc number) indication 7 TRACK (track number) indication 8 SHUF (shuffle play) button OFF button AMS/DISC (Automatic Music Sensor/ manual search/disc select) button 5, 6, 7

Specifications

CD changer (CDX-424RF)
System Frequency response Wow and flutter Signal-to-noise ratio Output terminals Compact disc digital audio system 10 20,000 Hz Less than measurable limit 94 dB BUS control output terminal (8 pin) Analog audio output terminal (RCA pin) 800 mA (at playback) 800 mA (at disc loading / ejecting) 10C to +55C Approx. 181.5 mm (w/h/d) Approx. 2.1 kg
Dimensions Mass Approx. 15 mm (w/h/d) Approx. 120 g

General

Supplied accessories Optional accessories Disc magazine (1) Parts for installation and connections (1 set) CD single adaptor CSA-8 Disc magazine XA-250
Current drain Operating temperature Dimensions Mass
Design and specifications are subject to change without notice.

Hideaway unit

Frequency

Dimensions Mass

88.3 MHz/88.5 MHz/ 88.7 MHz/88.9 MHz/ 89.1 MHz/89.3 MHz/ 89.5 MHz/89.7 MHz/ 89.9 MHz (switchable) Approx. 124.8 30.0 99.8 mm (w/h/d) Approx. 330 g

Troubleshooting guide

The following checklist will assist in the correction of most problems which you may encounter with your unit. Before going through the checklist below, refer to the connection and operating procedures.
Problem The unit does not function. Cause/Solution The built-in micro computer has malfunctioned. n Press the RESET button on the hideaway unit. The connecting cords are not connected properly. The CD changer is installed in an unstable location. n Re-install it in a stable location. The Disc(s) is dirty or defective. n Clean or replace it (them). Take out the disc magazine, press (EJECT), and reinsert the disc magazine until it is locked securely.

The sound skips.

The disc magazine is not locked in changer.

Error displays

The following indication will flash for about five seconds. Display Cause The disc magazine is not inserted in the CD changer. No disc is inserted in the disc magazine. The disc is dirty. The disc is inserted upside down. The CD changer cannot be operated because of some problem. Solution Insert the disc magazine with discs into the CD changer. Take out the magazine and insert a disc(s). Clean the disc. Insert the disc correctly. Press the RESET button of the hideaway unit.
If the solutions mentioned above do not help to improve the situation, consult your nearest Sony dealer.

A, B, C, D, E

CD playback 6 Change Frequency 5 Output level 7

Shuffle play 7

T, U, V

Tape play 6

F, G, H, I, J, K, L, M, N

Fuse 8

W, X, Y, Z

Wired remote 9

O, P, Q