SONY CDP-CX55 - Service Manual Immediate Download

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SPECIFICATIONS

Model Name Using Similar Mechanism

CDP-CX50/CX571

CD Mechanism Type

CDM-46TE

Base Unit Type

KSM-213BFN/M-NP

Optical Pick-up Type

KSS-213B/S-N

SERVICE MANUAL

MICROFILM

COMPACT DISC PLAYER

CDP-CX55

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

PX Model

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TABLE OF CONTENTS

1. SERVICING NOTE .......................................................... 3

2. GENERAL .......................................................................... 6

3. DISASSEMBLY

3-1. Front Panel ......................................................................... 16

3-2. Illumination ASSY .............................................................. 16

3-3. CD Mechanism Deck .......................................................... 17

3-4. Base Unit and Magnet Holder ............................................. 17

3-5. CD Mechanism Section ...................................................... 18

4. TEST MODE ..................................................................... 19

5. MECHANICAL ADJUSTMENTS .............................. 22

6. ELECTRICAL ADJUSTMENTS ............................... 25

7. DIAGRAMS

7-1. Circuit Boards Location ...................................................... 28

7-2. IC Block Diagrams ............................................................. 30

7-3. Block Diagrams

· BD Section ........................................................................ 33

· Main Section ..................................................................... 35

7-4. Printed Wiring Board -- BD Section -- ............................. 37

7-5. Schematic Diagram -- BD Section -- ............................... 39

7-6. Printed Wiring Board -- Audio Section -- ........................ 41

7-7. Schematic Diagram -- Audio Section -- ........................... 43

7-8. Printed Wiring Board -- Main Section -- .......................... 45

7-9. Schematic Diagram -- Main Section -- ............................ 47

7-10. Printed Wiring Board -- Display Section -- .................... 49

7-11. Schematic Diagram -- Display Section -- ....................... 51

7-12. Printed Wiring Board -- Sensor, Motor Section -- .......... 53

7-13. Schematic Diagram -- Sensor, Motor Section -- ............ 54

7-14. IC Pin Functions ................................................................ 55

8. EXPLODED VIEWS

8-1. Case Section ........................................................................ 59

8-2. Front Panel Section ............................................................. 60

8-3. Chassis Section ................................................................... 61

8-4. Mechanism Deck Section 1 (CDM-46TE) ......................... 62

8-5. Mechanism Deck Section 2 (CDM-46TE) ......................... 63

8-6. Optical Pick-up Section (KSM-213 BFN/M-NP) ............... 64

9. ELECTRICAL PARTS LIST ........................................ 65

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

The laser component in this product

is capable of emitting radiation

exceeding the limit for Class 1.

This appliance is classified as

a CLASS 1 LASER product.

The CLASS 1 LASER

PRODUCT MARKING is

located on the rear exterior.

This caution label

is located inside

the unit.

MODEL IDENTIFICATION

-- BACK PANEL --

4-991-160-0

4-991-160-1

4-991-160-2

4-991-160-3

4-991-160-4

4-991-160-5

4-991-160-6

PARTS No.

MODEL

US model

Canadian model

AEP model

Australian model

E, PX model

Singapore model

UK model

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SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing safety checks 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.

LEAKAGE

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 microampers). Leak-

age 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)

Fig. A. Using an AC voltmeter to check AC leakage.

To Exposed Metal

Parts on Set

0.15

µF

1.5k

voltmeter

(0.75V)

Earth Ground

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 pick-

up block. Therefore, when checking the laser diode emission, ob-

serve from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION

CHECK

Carry out the "S curve check" in "CD section adjustment" and check

that the S curve waveform is output repeatedly.

SECTION 1

SERVICING NOTE

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK

! OR DOTTED LINE

WITH MARK

! 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE

!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.

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CD-TEXT TEST DISC

This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube.

The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display.

To check, perform the following procedure.

Checking Method:

1. Turn ON the power, set the disc on the disc table with the side labeled as "test disc" as the right side, close the front cover, and chuck the

disc.

2. Press the

" button and play back the disc.

3. The following will be displayed on the fluorescent indicator tube.

Display : 1kHz/0 dB/ L&R

4. Press the

= and + buttons to switch the track. The text data of each track will be displayed.

For details of the displayed contents for each track, refer to "Table 1 : CD-TEXT TEST DISC TEXT Data Contents" and "Table 2 : CD-

TEXT TEST DISC Recorded Contents and Display".

Restrictions in CD-TEXT Display

In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For details,

refer to "Table 2 : CD-TEXT DISC Recorded Contents and Display".

Table 1 : CD-TEXT TEST DISC TEXT Data Contents (TRACKS No. 1 to 41:Normal Characters)

TRACK

No.

Displayed Contents

TRACK

No.

Displayed Contents

1kHz/0dB/L&R

20Hz/0dB/L&R

40Hz/0dB/L&R

100Hz/0dB/L&R

200Hz/0dB/L&R

500Hz/0dB/L&R

1kHz/0dB/L&R

5kHz/0dB/L&R

7kHz/0dB/L&R

10kHz/0dB/L&R

16kHz/0dB/L&R

18kHz/0dB/L&R

20kHz/0dB/L&R

1kHz/0dB/L&R

1kHz/-1dB/L&R

1kHz/-3dB/L&R

1kHz/-6dB/L&R

1kHz/-10dB/L&R

1kHz/-20dB/L&R

1kHz/-60dB/L&R

1kHz/-80dB/L&R

1kHz/-90dB/L&R

Infinity Zero w/o emphasis//L&R

Infinity Zero with emphasis//L&R

400Hz+7kHz(4:1)/0dB/L&R

400Hz+7kHz(4:1)/-10dB/L&R

19kHz+20kHz(1:1)/0dB/L&R

19kHz+20kHz(1:1)/-10dB/L&R

100Hz/0dB/L*

1kHz/0dB/L*

10kHz/0dB/L*

20kHz/0dB/L*

100Hz/0dB/R*

1kHz/0dB/R*

10kHz/0dB/R*

20kHz/0dB/R*

100Hz Squer Wave//L&R

1kHz Squer Wave//L&R

1kHz w/emphasis/-0.37dB/L&R

5kHz w/emphasis/-4.53dB/L&R

16kHz w/emphasis/-9.04dB/L&R

NOTE : The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.

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Table 2: CD-TEXT TEST DISC Recorded Contents and Display

(In this unit, some special characters cannot be displayed. This is no a fault.)

TRACK

No.

Recorded contents

Display

N All the same

X Y Z [ / ] ^ _ (58····

N All the same

xy z { I } ~

(78····

i ¢ £ ¤ ¥

§ (A0····

is not displayed

(A8···· C ª

¬ PR are not displayed

· (B0····

± 23 ¶ are not displayed

¿ (B8····

are not displayed

N All the same

Ù ÚÛÜ Y

ß (D8····

N All the same

ñò óôõö

÷ (F0····

N All the same

! " # $ % & ´

(21h to 27h)1kHz 0dB L&R

( )

+ , . /

(28h to 2Fh)

0 1234 5 6 7

(30h to 37Fh)

8 9 : ; < = > ?

(38h to 3Fh)

@A B C D E F G

(40h to 47Fh)

H I J K L M N O

(48h to 4Fh)

P Q R S T U V W

(50h to 57Fh)

X Y Z [ ¥ ] ^ _

(58h to 5Fh)

a b c d e f g

(60h to 57Fh)

h i j k l m n o

(68h to 6Fh)

p q r s t u v w

(70h to 77Fh)

xy z { I }

(78h to 7Fh)

i ¢ £ ¤ ¥

(A0h to A7h) 8859-1

C ª

¬ PR (A8h to AFh)

± 23

µ ¶ · (B0h to B7h)

1 º

(B8h to BFh)

ÀÁÂÃ ÄÅ ÆÇ

(C0h to C7Fh)

È É Ê Ë ÌÍÎÏ

(C8h to CFh)

D Ñ ÒÓ ÔÕÖ

(C0h to C7Fh)

Ø ÙÚÛ Ü Y

(D8h to DFh)

à áâãä å æ ç

(E0h to E7Fh)

è é ê ë ìíîï

(E8h to FFh)

ñòóô õ ö ÷ (F0h to F7Fh)

ø ùúûü y

(F8h to FFFh)

No.66

No.67

No.99