SONY CDP-CX53 Service Manual

CDP-CX53

SERVICE MANUAL

SPECIFICATIONS

US Model

Canadian Model

AEP Model

E Model

Australian Model

Model Name Using Similar Mechanism CDP-CX50/CX571 CD Mechanism Type CDM-46C2 Base Unit Type Optical Pick-up Type KSS-213B/S-N

KSM-213BFN/M-NP

Compact disc player

Laser Semiconductor laser (λ = 780 nm)

Emission duration: continuous

Laser output Max 44.6 µW*

* This output is the value measured at

a distance of 200 mm from the objective lens surface on the Optical Pick-up block with 7 mm aperture.

Frequency reponse 2 Hz to 20 kHz ± 1dB

Signal-to-noise ratio More than 100 dB

Dynamic range More than 88 dB

Harmonic distortion Less than 0.013%

Channel separation More than 95 dB

Output

Jack Maximum Load impedance type output

level

LINE OUT Phono 2V Over 10 kilohms

Jacks (at 50 kilohms)

DIGITAL Optical –18 dBm Wave length: 660 nm OUT output (OPTICAL) connector

General

Power requirements

Where purchased Power requirements

USA/Canada 120 V AC, 60 Hz Australia 240 V AC, 50 Hz Europe 220 V – 230 V AC, 50/60 Hz Other countries 110 V – 120 V or 220 V – 240 V AC,

adjustable, 50/60 Hz

Power consumption 12 W Dimensions (approx.) When the front cover is closed (w/h/d) 430 × 182.5 × 295 mm (17 × 7 1/4 × 11 5/8 in.)

incl. projecting parts When the front cover is open 430 × 182.5 × 414 mm (17 × 7 1/4 × 16 3/8 in.) incl. projecting parts

Mass (approx.) 5.2 kg (11 lbs 8 oz)

Supplied accessories

Audio cord (2 phono plugs – 2 phono plugs) (1) CONTROL A1 cord (supplied for Canadian models only) (1) Remote commander (remote) (1) Sony SUM-3 (NS) batteries (2) CD booklet holder (1) Label (1)

Design and specifications are subject to change without notice.

COMPACT DISC PLAYER

MICROFILM

TABLE OF CONTENTS

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

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. TEST MODE.............................................................. 9

5. MECHANICAL ADJUSTMENTS ....................... 12

6. ELECTRICAL ADJUSTMENTS......................... 15

7. DIAGRAMS.................................................................17

7-1. Printed Wiring Board – BD Section – ........................... 19

7-2. Schematic Diagram – BD Section – ............................... 21

7-3. Printed Wiring Board – Audio Section –....................... 23

7-4. Schematic Diagram – Audio Section –.......................... 25

7-5. Printed Wiring Boards – Panel Section – ...................... 27

7-6. Schematic Diagram – Panel Section – .......................... 29

7-7. Printed Wiring Board – Sensor/Motor Section – .......... 31

7-8. Schematic Diagram – Sensor/Motor Section – ............. 33

7-9. IC Pin Function Description ........................................... 37

8. EXPLODED VIEWS ................................................ 43

9. ELECTRICAL PARTS LIST ............................... 49

MODEL IDENTIFICATION — BACK PANEL —

PARTS No.

PARTS No. MODEL

4-997-124-01 4-997-124-11 4-997-124-21 4-997-124-31 4-997-124-41 4-997-124-51

US model Canadian model AEP, AED model Australian model E model Singapore model

• Abbreviation AED: North Europe

CAUTION

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

(Except for the customers in the United States and Canada)

The following caution label is located inside the unit.

CAUTION :

INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.

ADVARSEL :

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLING.

VORSICHT :

ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.

VARO!:

TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.

VARNING :

OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.

ADVERSEL :

SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.

VIGYAZAT!:

GÁRVESZÉLY

INVISIBLE LASER RADIATION WHEN OPEN AND

USYNLIG LASERSTRÅLING VED ÅBNING NÅR

UNSICHTBARE LASERSTRAHLUNG, WENN

AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT -

OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD

USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG

A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-

KERÜLJE A BESUGÁRZÁST!

– 2 –

SECTION 1

SERVICING NOTES

SAFETY CHECK-OUT

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.

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.). 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. Follo w 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 lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V A C range are suitable. (See Fig. A)

To Exposed Metal Parts on Set

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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 from more than 30 cm away from the objectiv e 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.

1.5 k

0.15 µF

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

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.

Ω

Earth Ground

AC voltmeter (0.75 V)

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR 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.

– 3 –

This section is extracted from instruction manual.

LOCATION OF PARTS AND CONTROLS

Front Panel

SECTION 2

GENERAL

STANDBY

I/u

PUSH OPEN

!∞

45 6 7

BLOCK

PLAY MODE REPEAT BLOCK FILE 1 2 3

PULS ONE

!¢

DISC

PUSH ENTER

4 5 CHECK CLEAR

0!¡!™!£

1 I/u (power switch) button 2 Front cover 3 PLAY MODE button 4 REPEAT button 5 Display window 6 BLOCK 1-5 buttons 7 DISC PUSH ENTER knob

8 CHECK button 9 CLEAR button !º ± button !¡ ≠ button !™ p button !£ P button !¢ · button !∞ PLUS ONE button

– 4 –

SECTION 3

)

DISASSEMBLY

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

CASE, FRONT PANEL

two screws (BVTT3 × 6)

claw

front panel

two screws (M3 × 8)

screw (BVTT3 × 6)

connector (CN803)

two screws (M3 × 8)

wire (flat type) (15 core (CN801)

wire (flat type) (9 core) (CN103)

two screws (M3 × 8)

case

TABLE (50)

table (50)

screw (PTPWH2.6

three screws (BVTT3 × 6)

claw

bracket (ILLUMINATION)

screw (BVTT3

connector (CN84)

– 5 –

CD MECHANISM DECK SECTION

two screws

14)

screw (BVTT3

(BVTP3

!¡

connector (CN61)

ring (B)

screw (P3

connector (CN51)

reinforcement

two screws (BVTT3

10)

connector (CN53)

base (LOADING)

screw (BVTT3

wire (flat type) (12 core) (CN102)

screw

(BVTT3

!™

base (CDM)

AUDIO BOARD

two screws

ring (A)

screw (BVTP3 × 8)

two screws (BVTT3 × 6)

transformer cover

connector (CN701)

AUDIO board

screw (BVTT3 × 6)

three screws (BVTP3 × 10)

– 6 –

BASE UNIT

)

bracket

two screws (BTP2.6

screw (BTP2.6

10)

reinforcement (small)

two tention springs

base unit

four screws (PTPWH2.6

BD BOARD, SLED MOTOR (M102)

gear (A) (S)

two screws (2 × 3)

!¡

sled motor (M102)

claw

gear cover

three claws

gear (B) (RP)

wire (flat type) (16 core) (CN101)

BD board

Removal four solders.

– 7 –

screw (B2 × 5)

OPTICAL PICK-UP (KSS-213B/S-N)

Remove the optical pick-up to direction of the arrow A.

sled shaft

claw

– 8 –

SECTION 4

TEST MODE

DISPLAY CHECK MODE

Note:

This will not work properly if the DISC is set to any slit.

1. Press the I/u button, turn ON the power, and set a CD in any slit.

2. Press the I/u button, and turn OFF the power.

3. While pressing the [CHECK] and [PLUSONE] buttons together with the power OFF , press the I/

u button and turn ON

the power.

4. All the segments of the fluorescent indicator tube light up, and the · , P , and [PLUSONE] LEDs light up.

5. To exit the display check mode, press the I/u button.

ADJ MODE

1. Press the I/u button to turn the power ON.

2. Open the front cover, and press the [PLUSONE] button.

3. Set the disc (YEDS-18 : 3-702-101-01) in the PLUS ONE slit.

4. Close the front cover, and chuck the disc.

5. Press the I/

6. Connect TP (ADJ) of the DISPLA Y board and the ground with a lead wire.

7. Press the I/u button and turn ON the power.

The ADJ mode is set with the above.

u button, and turn OFF the power.

FLUORESCENT INDICATOR TUBE, LED ALL LIT, AND KEY CHECK MODE

Connect TP (AFADJ) and ground of the DISPLAY board with a lead wire. When a button is pressed, the left side of the indicator tube will show how many buttons have been pressed so far. (However, buttons already pressed once will not be counted.) The right side will show the numbers corresponding to the pressed buttons.

[ DISPLAY BOARD ] — CONDUCTOR SIDE —

CNP801

IC801

CNP804

TP(AFADJ)

TP(ADJ)

Differences with normal mode

• No high speed search is performed during access

• Ignored even if GFS becomes L

• Ignored even if Q data cannot be read

• Spindle servo gain is set to 12 cm mode (Even with 8 cm disc)

The following special functions will work when certain functions are pressed in this mode.

Special functions in ADJ mode

(The ( ) buttons function only with the general purpose remote.)

Button Function

(3) Tracking servo, sled servo OFF (8) Tracking servo, sled servo ON

CHECK S shape observation mode

Buttons and Corresponding Button Numbers

Button Button Number or Display

CLEAR 0 CHECK 1

DISC

PUSH ENTER

± 8 ≠ 9

REPEAT 14

PLAY MODE 15

BLOCK 5 16 BLOCK 4 17 BLOCK 3 18 BLOCK 2 19 BLOCK 1 20

I/u 21

PLUS ONE While the button is pressed, LED (D803) lights up.

P is partially lit and LED near by (D802) is lit while

While the button is pressed, LED (D801) lights, and the whole fluorescent indicator tube lights up.

The fluorescent indicator tube (segment check)

pressed. The fluorescent indicator tube is partially lit while

pressed (grid check).

– 9 –

1 DISC

Count up

CD 1

Button number

1. Grid check

(

)

1 DISC

2. Segment check

Key Inputs Other than Buttons and How to Display

Key input Display

Rotate the JOG knob to the right

Rotate the JOG knob to the left

Press the JOG knob (ENTER)

Door cover “Close” [STANDBY] LED goes OFF Door cover “Open” [STANDBY] LED lights up

CD 1

Fluorescent indicator tube block indicator lights up in the order of 1 n 2 n 3 n 4 n 5 n 1 n ·····.

Fluorescent indicator tube block indicator lights up in the order of 5 n 4 n 3 n 2 n 1n 5 n ·····.

Displays button number 2

---



onn

Sequence of Aging Mode

1. Disc change

2. Load in

3. TOC read

4. Access of last track

5. 3 second playback

6. Access of first track

7. 3 second playback

8. Load out

Order of Disc Change

(1 cycle takes 3 minutes)

1. No. 51

2. No. 20

3. No. 40

4. No. 30

5. No. 10

6. No. 40*

AGING MODE

• Mode which repeatedly changes and plays back discs automatically in the unit.

• It will repeat aging as long as no errors occur.

• If an error occurs during aging, it will stop all servos, motors, etc. instantaneously, display the error number, and stop operations. However, the stopping conditions differ according to whether the unit is equipped with the “self-protection function during errors” described later. The function serves to maintain the state of the unit when errors occur.

* DISC No. 40 chucks twice during one cycle.

T o dif ferentiate, the “[2]” on the block indicator of the fluorescent indicator tube will light up during the second chucking.

Special Functions in Aging Mode

There are some useful function in the aging mode.

• Disc setting mode*1

• Switching of use/disuse of protection function in errors *2

• Aging cycle count function *3

*1 Disc setting mode:

5 discs are set before setting the aging mode. This mode makes the setting of these discs more easy.

*2 Switching of use/disuse of protection function in errors:

Function which voluntarily corrects errors which occur during normal operations by retries. If this function is not provided, all operations will be stopped without retiring. It is suitable for checking errors with low reproducibility. If this function is provided, and errors can be corrected by retries, aging will be continued without stopping. (The normal aging should be performed with “be”.)

*3 Aging cycle count function:

Functions which displays the number of agings carried out on the Fluorescent indicator tube in numbers. One aging cycle consists of six discs.

DISC

Disc number Track number Agings carrried

TRACK1MIN SEC

0.01

1 n 2 n 3 n .....

– 10 –

Aging procedure:

(

Some operating method will be changed depending on if the following jig for the aging mode exists or not.

• Jig Parts. No Description J-2501-123-A Remote commander (For aging mode)

With remote commander for aging mode:

1. Turn ON the power of the unit. Open the front cover.

2. Press the [AGINGSTART] button of the remote commander

for aging mode.

3. When the disc set mode is set, the · and P LEDs blink.

4. Rotate the JOG dial. The slits (No. 10, 20, 30, 40, 51) for set-

ting the discs will come forward. Insert the discs into these slits. Do not set the discs in other slits.

5. Set the use/disuse of the self protection function in errors. Press

the

[REPEAT] button. When REPEAT is displayed on the fluo-

rescent indicator tube, the self protection function during the error will become “Use”. If the REPEAT displa y is OFF, it means that the function is not used. (Normally set to “Use” when performing aging.)

6. Press the · button.

7. The · LED blinks, the aging mode is set, and aging is

started.

8. The aging cycle lasts 3 minutes. When problems occur during

aging, the error number will be displayed on the fluorescent indicator tube, and the P LED will light up. (Refer to the following table for the details of the errors.)

9. Aging will be repeated as long as no errors occur.

10. After each ag ing cycle, the number displayed on the Fluores-

cent indicator tube will increase.

11. To end aging, press the I/u button

Without remote commander for aging mode:

1. Turn ON the power of the unit. Open the front cover.

2. Press the [PLAYMODE], · , and ≠ buttons in order.

3. When the disc set mode is set, the · and P LEDs blink.

The following procedure is the same as in the case “With remote commander for aging mode”.

Error Display

DISC

Disc number

Error code number of agings

Err

1 n 2 n 3 n.....)

Error code

Code number Name Contents

Err 01 DISC sensor check 1 No disc in the specified slit Err 02 DISC sensor check 2 Disc in other slits Err 03 No function Err 04 Table operation check 2 No table sensor input Err 05 Loading operation check 1 Load in timeover Err 06 Loading operation check 2 Load out timeover Err *1 BU related check 1 Access timeover Err *2 BU related check 2 High speed search NG Err *3 BU related check 3 Q data read error Err *4 BU related check 4 BU operation (From focus search to until signal can be read) timeover Err *5 BU related check 5 GFS monitor error Err *6 BU related check 6 Focus cannot be imposed by focus search

The * numbers mean the following according to the state of the unit during aging

2 : From checking to end of TOC read 3 : From end of TOC read to end of last track playback 4 : From end of last track playback to end of first track playback

– 11 –

SECTION 5

MECHANICAL ADJUSTMENTS

To adjust the mechanism section, enter the mechanism section adjustment mode. For how to enter the mechanism section adjustment mode, refer to each adjustment section.

DISC SENSOR ALIGMENT

1. Make sure that there is no disc in the unit.

2. Connect an oscilloscope to TP501 of the AUDIO board.

oscilloscope

SENS GND TEST

AUDIO board TP501

SENS (CH1)

TEST (CH2)

GND

3. While pressing the [CLEAR] and [PLUSONE] buttons at the same time and turn ON the power.

CHECK button

CLEAR button

POWER switch

button

PLUS ONE button

≠

button

4. The fluorescent indicator tube shows as follows, and the mechanism section adjustment mode is set.

ALL DISCS

DISC

* *

DISC No.

Lit according to rotational direction

SEC

3.6

11111

CD1

Rotation time

PLUS ONE

5. The disc table rotates in the clockwise direction. The disc table rotation time is displayed with “PLUS ONE” slit as a measuring point.

6. Measure the waveform of the oscilloscope when the disc table is rotating.

– 12 –

7. Move the holder (sensor) center so that the flat portion center at the top of the SENS (CH1) input waveform and the ‘’H” center of

TEST (CH2) coincide.

SENS (CH1) waveform

Holder (sensor)

TEST (CH2) waveform

Fixed screw

Flat portion center of SENS (CH1) waveform

8. Tighten the fixed screw to fix the disc table, then press the [CLEAR] button.

9. The disc table rotates in the counterclockwise direction. Measure the waveform and make sure that the flat portion center at the top of

the SENS (CH1) input waveform and the ‘’H” center of TEST (CH2) coincide.

10. If the adjustment is not successful, press the

[CLEAR] button to rotate the disc table in the clockwise direction,

and perform steps 6 to 9.

Note: During the adjustment mode, the rotational direction is switched each time the [CLEAR] button is pressed.

Pressing the [CHECK] button enters the loading mode which will be described later. Pressing the [CLEAR] button rotates the disc table again.

– 13 –

MAGNET ASSY ALIGMENT

)

1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.

2. Turn OFF the power, close the door, and while pressing the [CLEAR] and [PLUSONE] buttons simultaneously, turn ON the power again.

3. Press the

[CHECK] button, and set the loading mode.

4. Press the ± button and chuck the disc.

5. Adjust the magnet assembly and magnet holder so that A=B as shown in the figure.

A B

Magnet ASSY

Magnet holder

Magnet ASSY

Screw (For adjustment

DISC HOLDER A ALIGMENT

1. Check that there is no disc in the unit and then turn ON the power. Open the door, and set a disc in the PLUS ONE slit.

2. Turn OFF the power, close the door , and while pressing the [CLEAR] and [PLUSONE] buttons simultaneously, turn ON the power again.

3. Press the

4. Press the ± button and chuck the disc.

5. Press ≠ or ± button to stop the disc holder A slightly away from the disc.

6. Rotate and adjust the adjusting screw so that the center of the disc and that of the disc holder coincide.

[CHECK] button, and set the loading mode.

Disc

Disc holder A

a b a = b

Disc

Disc holder A

Screw (For adjustment

– 14 –

SECTION 6

level : 1.6

0.3

Vp-p

0.2

VOLT/DIV : 200mV TIME/DIV : 500ns

RF signal waveform

)

ELECTRICAL ADJUSTMENTS

Note :

1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated .

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S Curve Check

oscilloscope

BD board

TP (FE) TP (VC)

+ –

Procedure :

1. Press the I/u button and turn ON the power supply.

2. Open the front cover, and press the [PLUSONE] button.

3. Set the disc (YEDS-18) into the “PLUS ONE” slit.

4. Close the front cover, and chuck the disc.

5. Press the I/

u button and turn OFF the power.

6. Connect the oscilloscope to TP (FE) of the BD board.

7. Connect TP (ADJ) of the DISPLA Y board and the ground with a lead wire.

8. Press the I/u button and turn ON the power.

9. The first track will be played back automatically. When the

[CHECK] button is pressed, “S JI” will be displayed on the

fluorescent indicator tube, and focus search will be repeated.

10. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 1.8 ±

0.6 Vp-p.

S-curve waveforms

symmetry

within 1.8

11. Turn OFF the power, and remove the lead wire connected at step 7.

Note: • Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the brightness to obtain best waveform.

RF Level Check

oscilloscope

(AC range)

BD board

TP (RF) TP (VC)

+ –

0.6Vp-p

10. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.

11. Turn OFF the power, and remove the lead wire connected at step 7.

Note: A clear RF signal wav eform means that the shape “◊” can be clearly

distinguished at the center of the waveform.

E-F Balance (Traverse) Check

The procedure for this checking method differs for when a general remote control unit is used and not used.

oscilloscope

BD board

TP (TE)

TP (VC)

+ –

When a general remote commander is used:

1. Press the I/u button and turn ON the power supply.

2. Open the front cover, and press the [PLUSONE] button.

3. Set the disc (YEDS-18) into the “PLUS ONE” slit.

4. Close the front cover, and chuck the disc.

5. Press the I/

u button and turn OFF the power.

6. Connect the oscilloscope to TP (TE) of the BD board.

7. Connect TP (ADJ) of the DISPLAY board and the g round with

a lead wire.

8. Press the I/u button and turn ON the power.

9. Playback the fifth track of the disc.

10. Press the [3] button on the remote commander. (The tracking servo and the sledding servo are turned OFF.)

11. Check the level B of the oscilliscope's wa veform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 10%

Traverse waveform

0 V

12. Press the

[8] button on the remote control unit. (The tracking

Center of the waveform

A (DC voltage

level : 1.3

0.5 Vp-p

servo and sledding servo are turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 11.

Traverse waveform

Procedure :

1. Press the I/u button and turn ON the power supply.

2. Open the front cover, and press the [PLUSONE] button.

3. Set the disc (YEDS-18) into the “PLUS ONE” slit.

4. Close the front cover, and chuck the disc.

5. Press the I/u button and turn OFF the power.

6. Connect the oscilloscope to TP (RF) of the BD board.

7. Connect TP (ADJ) of the DISPLA Y board and the ground with a lead wire.

8. Press the I/u button and turn ON the power.

9. Playback the fifth track of the disc.

0 V

Tracking servo Sled servo OFF

Tracking servo Sled servo ON

13. Turn OFF the power, and remove the lead wire connected at step 7.

– 15 –

C (DC voltage

+ 33 hidden pages

SONY CDP-CX53 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SERVICING NOTES

GENERAL

DISASSEMBLY

TEST MODE

MECHANICAL ADJUSTMENTS

ELECTRICAL ADJUSTMENTS