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2

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

Specifications ............................................................................... 1

...................................................... 3

Location and Function of Controls ....................................... 4

3-1.   Cabinet (Front) ASSY, Cabinet (Rear) ........................ 7
3-2.   Control Board .............................................................. 8
3-3.   Headphone Board ........................................................ 8
3-4.   Cabinet (Upper) ASSY ................................................ 9
3-5.   LCD Board (with Lamp Board) ................................... 9
3-6.   Main Board ................................................................ 10
3-7.   CD Board ................................................................... 10
3-8.   Optical Pick-up Block, Mechanism Deck,
         CD motor Board, TC Board ....................................... 11
3-9. M321 (Capstan/Reel Motor), Belt,

HRP301 Head, Magnetic (Record/Playback),
HE301 Head (Erase) .................................................. 11

3-10. Power ASSY, Battery Board,

Battery Common Board ............................................. 12

3-11. Tuner Board ............................................................... 12

4-1.   Mechanical Adjustments ........................................... 13
4-2.   Electrical Adjustments ............................................... 13

5-1. Explanation of IC Terminals ...................................... 17
5-2. Block Diagram – Tuner/TC Section – ....................... 20
5-3. Block Diagram – Main Section – .............................. 21
5-4. Block Diagram – CD Section – ................................. 22
5-5. Printed Wiring Board – TC Section – ........................ 23
5-6. Schematic Diagram – TC Section – .......................... 23
5-7.   Printed Wiring Board

– Tuner Section (US, Canadian, KR, TW Model) – .. 24

5-8. Schematic Diagram

– Tuner Section (US, Canadian, KR, TW Model) – .. 25

5-9. Printed Wiring Board

– Tuner Section (AEP, UK Model) – ......................... 26

5-10. Schematic Diagram

– Tuner Section (AEP, UK Model) – ......................... 27

5-11. Printed Wiring Board – CD Section – ....................... 28
5-12. Schematic Diagram – CD Section (1/2) – ................. 29
5-13. Schematic Diagram – CD Section (2/2) – ................. 30
5-14. Schematic Diagram – Main Section (1/2) – .............. 31
5-15. Schematic Diagram – Main Section (2/2) – .............. 32
5-16. Printed Wiring Board – Main Section – .................... 33
5-17. Printed Wiring Board – Power Supply Section – ...... 34
5-18. Schematic Diagram – Power Supply Section – ......... 34

6-1.   Front Cabinet Section ................................................ 40
6-2.   Rear Cabinet Section ................................................. 41
6-3.   Upper Cabinet Section ............................................... 42
6-4.   Mechanism Deck Section (1) .................................... 43
6-5.   Mechanism Deck Section (2) .................................... 44
6-6.   CD Block Section ...................................................... 45

...................................... 46

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

LES COMPOSANTS IDENTIFIÉS PAR 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.

This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located at the bottom
of the player.

Information
For customers in Europe

Power requirements

For CD radio cassette-corder:
120 V AC, 60 Hz (US, CND, TW)
230 V AC, 50 Hz (AEP, UK, KR)
9 V DC, 6 size D (R20) batteries
For memory back-up:
6 V DC, 4 size AA (R6) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries

Power consumption

AC 20 W

Battery life

For CD radio cassette-corder:
FM recording
Sony R20P: approx. 15 h
Sony alkaline LR20: approx. 40 h
Tape playback
Sony R20P: approx. 10 h
Sony alkaline LR20: approx. 25 h
CD playback
Sony R20P: approx. 1.5 h
Sony alkaline LR20: approx. 6 h

Dimensions

Approx. 420 

× 161 × 266 mm (w/h/d)

(16

 5 ⁄8

 

× 6

 3 ⁄8

 

× 10

 1 ⁄2

 inches) (incl. projecting parts)

Mass

Approx. 4.6 kg (10 lb. 2 oz) (incl. batteries)

Supplied accessories

AC power cord (1)
Remote control (1)

Design and specifications are subject to change without
notice.

3

The laser diode in the optical pick-up block may suffer electro-
static 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 more than 30 cm away from the  objective
lens.

 CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig : X-4918-255-1

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S701) as following figure.
4. Confirm the laser diode emission while observing the

objecting lens. When there is no emission, Auto Power
Control circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus
search.

To Exposed Metal
Parts on Set

0.15

µF

1.5k

Ω

AC
voltmeter
(0.75V)

Earth Ground

After correcting the original service problem, perform the
following safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM

or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)

4

This section is extracted from
instruction manual.

qd

qg

qf

qh

qk

ql

w;

wa

ws

qj

1

2

3

4

5

6

7

8 9 0

qa

qs

1 BAND•AUTO PRESET button

2 FUNCTION button

3 CD: M

Radio: TUNE + button

4 SLEEP

5 OPR/BATT indicator

6 POWER button

7 Tape operation buttons

REC  z

PLAY N

REW m

FF M

STOP/EJECT x/Z

PAUSE X

8 Display window

9 SOUND button

0 MEGA BASS button

qa VOLUME +/- button

qs

Z PUSH  OPEN/CLOSE

qd DISPLAY/ENTER•MEMORY button

qf FOLDER/TRACK button

qg AMS/PRESET +/- Jog dial

qh INTRO SCAN button

qj MP3 indicator

qk CD x button

ql CD u  button

w; MODE button

wa CD: m

Radio: TUNE - button

ws i jack

5

4

Connect the supplied AC power cord (see page 23).

Press Z PUSH  OPEN/CLOSE  down
to open  the  CD compartment  and
place  the  CD on the CD
compartment.

Close the lid of the CD compartment.

Press u (N on  the  remote).

The player turns on (direct power-on)
and the player plays all the tracks
once.

To play a disc with MP3 files, see
page 6.

     PUSH

OPEN/CLOSE

     PUSH

OPEN/CLOSE

CD

5

adjust the volume

Press  VOLUME +, 

—

(VOL +, —

 on  the  remote).

stop playback

Press x .

pause playback

Press u (X on  the  remote).
Press the button again to
resume play after pause.

go to the next track

Turn the jog dial clockwise.

(On the remote, press >.)

go back  to  the  previous track Turn  the  jog  dial  counterclockwise.

(On the remote,  press 

..)

remove the CD*

Press Z PUSH  OPEN/CLOSE.

turn on/off the player

Press  POWER.

* Once you open the CD compartment, the track to start play will

change  to the beginning  of the first track.

Playback starts from the
track you last stopped
playing (Resume  play).
During stop,  the track
number to be played are
displayed.
To cancel  the resume play
to start  play from the
beginning of the first track,
press x in stop  mode.

u

x

Z

6

Press Z PUSH OPEN/CLOSE down to open the CD
compartment  and place  the  CD on the CD compartment
(see page 4) .

Close the lid of the CD compartment.

Press u (N on  the  remote).
The player turns on and the player plays all files of a disc
(TRACK mode).
When you use a disc with MP3 files, the MP3 indicator
lights up.

Playing a  specific  file (FOLDER mode)
Press FOLDER/TRACK during  stop  to display 

 in the

display, and turn the jog dial to select the folder you want to
play, then press u.

During play

Turn the jog dial.

(Press > or . on  the  remote)

During stop

Press M or m.

(Press TUNE + or - on the remote)

Before playing a file, this
player reads  all file and
folder information  on the
disc. Depending  on the
file structure,  it may  take
more than a minute to
read them. During this
time, TOC READING
is displayed.

You can use  the buttons
mentioned on page 5 for
additional operations  in
the same way as playing
an audio CD.

u

M, m

Z PUSH
OPEN/CLOSE

7

Track mode

Playing all MP3 files from 1, 2, 3...9, 0

Folder mode

Playing all MP3 files in the selected folder.

(Example: If you select folder 3, the player

plays file 4. If you select  folder 4, the  player
plays file 5 and 6.)

CD-R
CD-RW

1

4

2

1

3

5

6

4

7

8

9

5

q;

6

3

2

Example of folder  structure  and  playing
order
The playing order of the folders and files is as follows:

¥ A folder  that  does  not

include an MP3 file is
skipped.

¥ Maximum folder number:

255
Maximum file number: 255

¥ Folder names  and file

names can be displayed
with up  to 8 characters.

¥ The characters  A - Z,

0 - 9, and  _ can  be
displayed on this player.
Other characters  are
displayed as  - .

¥ The file name  does  not

correspond to 

the ID 

tag.