Sony CDX-7520 User Manual

3-752-147-21 (1)

COMPACT

FM/AM Compact Disc Player

CMGtTAL AUDIO

CDX-7520

Operating Instructions page 2

Before operating the unit, please read this manual thoroughly and retain it for
future reference.

Mode d’emploi page 23

Avant la mise en service de cet appareil, prière de lire attentivement ce mode
d’emploi que l’on conservera pour toute référence ultérieure.

SONY " j
1 OFF 1 U r

CD

MUTE ( - ^|sELECl^( -t- ') LOUD

For installation and connexion, see the supplied installationA»nnections
manual.

En ce qui concerne l’installation et les connexions, se reporter au manuel
d’installationfconnexions, fourni.

© 1990 by Sony Corporation

---------------------

------------------------

M.SCAN

A. M£M

-----------------------

SENS

4° 5°

iMANuf^

^

2°

3°

r^—.SEEK 4-1
liîl-' AMS '-»il

6°

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FM
AM

CD

For the Customers in the United States

Owner’s Record

The mcxlel and serial numbers are loceted at
the bottom oi the imit. Record the serial
number In the space provided below. Refer to
these numbers whenever you call upon your

Sony dealer regarding this product

Model No. CDX-7520 Serial No. _________________

CAUTION

The use of optical instruments with this
product will increase eye hazard.

INFORMATION

This equipment generates and uses radio
frequency energy and If not installed and used
property, that is, in strict accordance with the
manufacturer's Instructions, may cause
interference to radto and television reception. It
has been type fested and found to comply with
the limits for a Class В computing device in
accordance with the specifications in Subpart J
of Part 15 of FCC Rules, which are designed to
provide reasorrable protection against such
interference in a tesidertoal installation. However,
there is no guatarftee that interference will not
occur in a particular installation, it this
equipment does cause interference to radio or
television reception, which can be determined
by turning the equipment off and on, the user

is encouraged to try to correct the interference
by one or more of the following measures:

Reorient the receiving antenna
Relocate the equipment with respect to the
receiver.
Move the equipment away from the receiver.
Plug the equipment into a different outlet so
that equipment and receiver are on different
branch circuita

If necessary, the user should consutl the dealer

or an experienced radio/tefevison technician for

additional suggestions. The user may find the
following booklet prepared by the Federal
Communications Commission heiptul; "How to
Identify and Resolve Ftedio-TV Interference
Problems”. This booklet is cwalable from the
US. Government Printing Office, Washington,
DC 20402, Stock Na 004^10000346-4.

Table of Contents

Features

Features .................................................................3

Precautions ............................................................ 4

Location of controls

Adjusting a sound .................................................... 9

..................................................

CP Operation

Playing a disc
Enjoying the variety of CD playing modes . . 12

........................................................

10

Reception

Memorizing stations automatically ............................ 13

Memorizing only desired stations manually . 14

Tuning in automatically.............................................15

Tuning in manually

Specifications

Fuse replacement..................................

Troubleshooting guide

.................................................

.......................................................

................

.............................................

17

18
19

DIN-sizfid mobile CD player and FM/AM tuner

6

CD section

• Provided with 8 times over-sampling digital
filter fc»r dynamic sound reproduction

• Quick-recovery mechanism against sound
skipping.
When strong vibration causes sound skipping,
the player quickly relocate the point where the
play was interrupted.

• A 3Hnch (8 cm) CD can be played without an
adaptor.

Tuner section

• Automatic memory functbn stores a total of
24 stciions {18 FM and 6 AM stations) in
memory.

20

• Easy and quick tuning with preset buttons
while driving

Others

• Fader control for adjusting the volume of the
front and rear speakers in 4-speaker system

• Line outputs and auxiliary inputs for
connecting an optional power ampltfier,
equalizer and a cassette player

• Two color variation (amber or green) for
illumirtation

Precautions

• Before operating the unit for the first time
or after replacing the battery, press the
reset button (page 6) with a ball-point
pen, etc., then start operating the unit.

• If your car was parked In direct sunlight and
there was a considerable rise in temperature
inside the car, allow the unit to cool off before
operating.

• If no power is being supplied to the unit,
check the connections first. If everything is in
order, check the fuse.

• If no sound comes from the speakers of a
2-speaker system, set the fader control to the
center position.

• As the laser beam used In this compact disc
player is harmful to the eyes, do not attempt
to disassemble the cabinet. Refer servicing to
qualified personnel only.

Notes on moisture condensation

On a rainy day or in a very damp area,
moisture may condense on the lenses Inside
the unit.
Should this occur, the unit will not operate In
this case, remove the disc and wait for about
an hour until the moisture evaporatea

If you have any question or problem concerning
your unit that is not covered in this manual,
please consult your nearest Sony dealer.

4

Notes on discs

Heindle the disc by its edge, and to keep the

disc clean, do not touch the surfece.

TWs way

Cleaning discs

Before playing, dean the disc with an optional
deaning doth.
Wipe the disc in the direction of the anows.

Do not stick paper or tape.

r

Not this way

Do not expose the disc to direct sunlight or
heat sources such as hot air ducts, or leave it
in a car parked in direct sunlight where there
can be a considerable rise in the temperature.

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

Location of Controls — Refer to the pages lixHcated in •.

m OFF (power off) button ^
¡XI Reset button O, O

IX] Display window

[4] SELECT (voiume/balance/bass/treble/

fader stiect) button O

in Disc insertion slot
fe] ± (eject) button Q

[7] ILL (illuminahon color change) button

Press to change the color of illumination.
Two colors, green and amber, are available.

[U MUTE button

Press to nrKMnentarily mute the sound.
Press again to restore the same level as
before.

[9] -/+ buttons 0

|iol LOUD (loudness) button

Press to reinforce bass and treble especially

when listening at low volume. To disengage

the button, press it again.

SENS button 0

[XI M.SCAN (nnemory scan) button 0

A. MEM (autonnatic memory) 0

fi

Radio/CO section

Number During disc play

1
2
3
4
5

6 SHUF (shuffle) button ®

MANU-«^/»^ (manual search) button ® MANU +/- (manual tuning) button ®
AMS*HM/^button ^ SEEK +/- (automatic tuning) button

CD ► n (disc play/pause) button 0
AM (tuner on/band select) button ®

is] FM (tuner on/band select) button ®

’ Automatic Music Sensor

<-* (skipping to the top) button 0

—

—
INTRO button ®
REPEAT button #

During cBsc piay

During radio reception

Preset number buttons @

During radio rec^ion

7

Location of Controls

If your car ignition key does not have the accessory position

The illumination on the tront panel Is iactoryeet to be turned on
even when not playing the unit. Howesrer, setting may cause
the car battery to run down when the unit is used in the car
which has no accessory position. To avoid this when using the
unit in such a car, set the selector located on the bottom to
OFF, then press the reset button, 'rbu can mate the illumirteftion
turned off when not playing the unit

8

Adjusting a Sound

Controlling the volume/balance/bass/treble/fader

СЮ

CD

MUTE

I i

-/+ SELECT

.........

.

II 1 «4^

M.SCAN

-

SENS

-.1.“

........

4o

|MAMU|~X1

Display window

3°

¿1-.

6o

to“­itr—,SEEK +CT

Ц23-' AMS L^±lJ

FM

AM

CO

-/+ button normally functions as
the volume control. Adjust the
level within three seconds after

selecting the desired control
mode with the SELECT button.

•Otherwise, the mode goes back

to the volume control mode.

Each time the SELECT
button is pressed, the
display indication will
change as (ollows.

1 Display
' window

L

BBS

TRE

3RL

EBB

b ni

у L I L

Control

mode

(-) button (-F) button

Bass For less bass

Treble

Baiance

Fader

Volume

For less treble

To decrease

the right-speaker
volume

To decrease the
rear-speaker
volume

For less volume For more volume

For more bass

For more treble

To decrease
the left-speaker
volume

To decrease the
front-speaker
volume

Playing a Disc

1

Notes

• Do not insert a disc with the
label surtace down. Doing so
may damage the unit.

• Do not try to insert another
disc when one has been
already inserted. Doing so
may damage the unit.

10

At the end of the disc

The track number returns to 1
and play will be repeated from
the beginning of the disc

Important

Since the CD system offers a
wide dynamic range, the peaks
of the high ievel inputs are

recorded with high fidelily, and
the noise level is very low. Do

not turn up the volume while

listening to a portion with no
audio signals or vary low level

Inputs. If you do, the speakers

may be dWnaged when a peak

level portion is played.

To stop the disc pte^

Press OFF.
To restart playing from the same point,
press te-M.

Ito pause tfto disc

play

Press ► a.
The display when you press the
button is as foUows;

-1-

''P Blinking

Track number

^Elapsed playing time

lb restart the play from the same point,
press ► n.

■fo tWncive Die (Ssc

Press .
Even if you set the ignition key to the off
position, you can remove the disc by
pressing a .

Locating a Particular Selection

Locating a selection in sequence (Automatic Music Sensor)

You can locate the beginning of a desired selection during play.

Note on a 3-Inch (8 cm) CD

■ybu can play a 3-inch (8 cm)
CD wilhcwt an adaptor.

It you press the FM or AM
button during the disc play

The disc play w8l slop auto­maticalty and the radio sound
will be heard.

Note on a 12 cm disc
If you leave the disc putting
into the slot after pressing the

button, the disc will be

inserted automatically in fifteen
seconds to protect the disc.
If you press the »• m button
within the fifteen seconds, the
disc will bo inseited and the
disc play start from the
beginning of the disc.

Tb kxsis the begtonirtg d the ^ecSort being

Press once

played
To locate the begirtning of the netd eefecQcto Press »HM once.

Press repeatedly to locate previous selections or selections ahead.

Locating a Particular Point in a Selection

Locating a point in sequence (Manual Search)

You can loc^e a particular point in a selection during play by
monitoring the high-speed sound.

To go batìk at higb ^peed
To go ahead at high speed

Keep pressed.
Keep ►► pressed.

Locating the Beginning of the Disc

Press I I'i

You can quickly locate the beginning of the disc being played.

Keeping the » button
pressed
The time counter displays
when you have passed the end
of the disc. To return to a
normal display, press ree or

button.

11

iCPOpewttonl

Enjoying the Variety of CD Playing Modes

SONY

1 OFF t O 1

MtCAN

MOTE (''^fcajci^fT^I LOOP

A.M£M 1<

(^HMNuTg

WTM

4f

2^

REPCAT SHUF

5f 6f

siisiia

INTRO -

REPEAT

Raying the First Portions of Selections

\bu can play the first ten seconds of

MTRO

4°

eadi selection in oider.

If you find a desited setecfion. press the
button to cancel the moda The play
continues.

Playing Repeatedly—Repeat piay

REPEAT

5°

\bu can repeat a single selection To cancel

Press the button again.

-SHUF

H you press ttre INTRO button
during the shuffle play, the first

ten secortds of all selections
will be played in random order.

Playing in Random Order-shufne Piay

\bu can play the selections in

SHUF

random order.
To cancel

Press the button agan.

12

iRadto Rccet^oni

(Automatic

Memorizing the Stations Automatically

Memory Function)

SONY 1

....................................

foin oL==---------------------------------------------------------------------------

CD

MUTE ( - )/seL£a\('T~) loud

.................................................... 1 ,

M.SCAN

А.Щм 2« 3°

ГШЮ

ПЕРЕДГ

4**

1

FM

or

AM

M.SCAN

A. MEM

Press to select a desired band.

The tuner turns on at the same time.

Press for more than two seconds.

The unit starts scanning the selected band
and memorizes the tuned stations on the
preset buttons 1 to 6 automatically.

-----------------------

SNUF

So

,■)

FM

ku

6«

ir~

M}u can memori2s a total ot 24
stations—6 stations on each band
(FM1, FM2, FM3,‘ Of AM), one
on each preset button.

1

In what order are stations
memorized?

The unit scans the band from
the lowest frequency to the
highest frequency twice. At the
first cycle, the unit scans only
the stations with considerably
strong signals. At the next
cycle, the minimum level of the
signal strength that can be
tuned will be lowered.

• Frequency range of the FM1,
FM2 and FM3 bands is
same.

Surveying What is Being Broadcasted on

the Preset Stations

M.SCAN

A. MEM

Press lightly.

Each memorized station will be scanned for
five seconds in order. (When the broadcast
of the memorized station is too weak, it
cannot be received.)

IQ

I Racgo RecepBotTI

Memorizing Only Desired Stations Manually

Use this method to memorize
stations not memorized by the
automatic memroy function.

Important

Press to select a desired band.

1

The tuner turns on at the same tima

FM AM

or I______

Press to tune in a desired station, (page 15 or 17).

Each preset button has only
one memory for a band. The
previously memorized station
wW be erased when you errter
a new station of the same
barxl on the same preset
number button.

SIlMAHUlIS ^

Press for more than two seconds.

Ex. 1b memorize on the preset button 1

1o

The number of the pressed preset button

will be displayed and the station will be
memorized.

m ioH33>~

Receiving the Preset Station

1 Select a desired band. 2 Press a desired preset button Mghtiy.

14

[Radio Reeetitani

Tuning in Automatically

Press to select a desired band.

1

The tuner turns on at the same time.

Use this method when you do
not know the frequency of
desired stations.

FM

Press to start scanning

For lower frequencies

Press to adjust the volume.

AM

or

The scanning automatically stops when a

station is tuned in. Repeat this step until a
desired station is tuned in.

r=—.SEEK
IMlJ AMS

i

For higher frequencies

15

Tuning in Automaticaliy

When there are too many stations and the
scanning stops too frequently during
automatic tuning

SENS

Press
appears on the display window.

so that the LCX^L indicator

fwf W H3 0

Only the station with comparatively strong
signals can be tuned in.

When the FM stereo program is too weak
and noisy

SENS

Press

appears on the display window.

so that the MONO indicator

FW 1043 ©I

The noise wilt be reduced. The sound will
be monaural instead.

When an FM stereo program of suffident signd strength is tuned in

Fffl )0 H 3 €

The STEREO indicator appears and the

program is automatically received in stereo

The SENS button tunctions
as follows

When receiving an FM station

M WH3 1

^ Press SENS.

; 7^ m3 ^

^ Press SENS again.

~TtS~WW0

Press SENS
once again.

I

When receiving an AM station

.Press SENS.

ñi ÉW &

Press SENS again.

16

Tuning in Manuaily

[SONY 1

_________________________^__________z:_____________

L22J ° C-r-"' ----------------------------------------------------------------------——t

CD

MUTE C^lsKLea\C^ UHio

M.6CAN

A. MEM

SENS

MTfK»

4®

IVPCi»

2« 3«
5®

i

8HUF

6®

d]'

~i? 1

FM
AM

1

For your safety while driving

Keep your eyes on the road
and use the automatic tuning
or the memory preset tuning!

Specifications

CD player section

System Compact disc digttal audio

Frequency response 10-2(U)00 Hz ±3 dB
SignaMo-noise ratio 90 dB
Wow and flutter Bekm measurable Imit
Laser Diode Properties

system

Material

GaAIAs

Wavelength

780 nm

Emission Duration

Continuous

Laser out-put Power

Less than 4AB nV/*

* This output is the value measured

at a distance ol 200 mm from the

objective lens surface on the

O^ical Pick-up Block.

General

Power tequlremetss 12 V DC car battery (negative

Current (kain 800 mA (CD playback)

Operating temperature

Dimensione Approx. 160 x SO xl46 mm (w№d)

Weight Approx. 1.7 kg (3 lb 12 oz)
1bne controls Bass ±10 dB (100 Hz)

Supplied accessories

Optional accessories

ground)

2 A (during disc loading or eject)

-10^ to 50^ (15°F ID 120»F)

(7Vs>‘2x5V4ln.)

Treble ±10 dB (10 kHz)

Mounting hardware (1 set)

Mounting kit
Cleaning doth XP-CD1

Tuner section

FM AM
Tuning range 87S-1079 MHz
Atttenna terminal

Intermediate frequerxry
Usable sensitivity 12 dBf (1.1 ^V775 ohms)
Selectivity TSrffial ±400 kHz —

SignaMo-noise ratio

Harmonic cSslortion at 1 kHz

Stereo separation
Frequency response 30 Hz-15i000 Hz ±3 dB

Design and specifications subject to change without notice.

FM/AM external antenna connector

107 MHz

70 dB (tTxmaural)
65 dB (stereo)

03% (monaural)
03% (stereo)

35 dB

530-1.710 kHz

450 kHz

35,iV

55 dB

03%

-

/8

Fuse Replacement

I the fuse blows, check the power connection
ind replace the fuse. If the fuse blows again
ifter replacement, there may be internal
nalfunction. In this case, consult your nearest
5ony dealer.

Wamlrtg

Jse the specified ampere fuse only.
Jse of a higher amperage fuse may cause
serious damage.

19

Troubleshooting Guide

The following checks will assist in the conecllon ot most problems
which you may encounter with your unit.
Before going through the check list below, first refer back to the
conrrection and operating procedures.

CD player section

iNwble

Play does not begin. • The unit is in the pause mode Press ► II.

• Dusty or defective disc

• The ambient temperature is more than 50“C (120^

Disc cannot be loaded or the disc is
automatically ^ected.

The operation buttons do not work. The built-in microprocessor malfunctions. Press the

The sound skips due to vibration

Tuner section

1Nxi>ie

Preset tuning is not possible. • Memorize the correct frequency.

Automatic tuning is not possibla
The STEREO indicator flickers. • Tune in precisely.

• A disc is already loaded.

• The disc is inserted with the label surface downwards.

res^ button.

• The unit is installed at an angle of more than 20°.

• The unit is not installed on the sturdy part of a car.

• Dusty or defective disc

• The broadcast is weak. Use manual tuning.
The broadcast is weak. Use manual tuning.

• The broadcast is weak. Pré» the SENS button to
display the MONO indicator.

About the error code

The following codes flicker for about five seconds.

Ënor code

E-04

E-66
E-77

;V;,, ^ .

The disc is dirty or inserted upside-down. (In this case, the
disc will be ejected automatically.)

A CD-ROM disc is inserted.
The temperature is too high and the protection circuit has

been activated.

20

• Clean the disc.

• Insert the disc correctly­Remove the disc
Wait until the unit cools

off.