SONY CDP CX57 Service Manual

CDP-CX57

SERVICE MANUAL

SPECIFICATIONS

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Model Name Using Similar Mechanism CDP-CX50/CX571 CD Mechanism Type CDM-46C1 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 response 20 Hz to 20 kHz ± 1dB

Signal-to-noise ratio More than 107 dB

Dynamic range More than 88 dB

Harmonic distortion Less than 0.013%

Channel separation More than 100 dB

Outputs

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

US/Canada 120 V AC, 60 Hz Australia 240 V AC, 50/60 Hz UK 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.) 5.5 kg (12 lbs 3 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) and Label (1)

Design and specifications are subject to change without notice.

COMPACT DISC PLAYER

MICROFILM

SECTION 1

SERVICING NOTES

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 2

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

3. DISASSEMBLY ......................................................... 7

4. TEST MODE.............................................................. 11

5. MECHANICAL ADJUSTMENTS ....................... 14

6. ELECTRICAL ADJUSTMENTS......................... 17

7. DIAGRAMS................................................................. 20

7-1. Block Diagrams

• BD Section .................................................................... 23

• Main Section ................................................................. 25

7-2. Printed Wiring Board – BD Section – ........................... 27

7-3. Schematic Diagram – BD Section – ............................... 29

7-4. Printed Wiring Board – Audio Section –....................... 31

7-5. Schematic Diagram – Audio Section –.......................... 33

7-6. Printed Wiring Board – Main Section – ........................ 35

7-7. Schematic Diagram – Main Section – ........................... 37

7-8. Printed Wiring Boards – Panel Section – ...................... 39

7-9. Schematic Diagram – Panel Section – .......................... 41

7-10. Printed Wiring Boards – Sensor/Motor Section –......... 43

7-11. Schematic Diagram – Sensor/Motor Section – ............. 45

7-12. IC Pin Function Description ........................................... 49

8. EXPLODED VIEWS................................................ 55

9. ELECTRICAL PARTS LIST ............................... 61

MODEL IDENTIFICATION — BACK PANEL —

PART No.

PART No. MODEL

4-997-568-0π 4-997-568-1π 4-997-568-2π 4-997-568-3π 4-997-568-4π 4-997-568-5π 4-997-568-6π

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

• Abbreviation AED: North European

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 –

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 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.

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 DIA GRAMS 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 –

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 co v er, 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 : CDTEXT 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.

1 1kHz/0dB/L&R 22 1kHz/-90dB/L&R 2 20Hz/0dB/L&R 23 Infinity Zero w/o emphasis//L&R 3 40Hz/0dB/L&R 24 Infinity Zero with emphasis//L&R 4 100Hz/0dB/L&R 25 400Hz+7kHz(4:1)/0dB/L&R 5 200Hz/0dB/L&R 26 400Hz+7kHz(4:1)/-10dB/L&R 6 500Hz/0dB/L&R 27 19kHz+20kHz(1:1)/0dB/L&R 7 1kHz/0dB/L&R 28 19kHz+20kHz(1:1)/-10dB/L&R 8 5kHz/0dB/L&R 29 100Hz/0dB/L*

9 7kHz/0dB/L&R 30 1kHz/0dB/L* 10 10kHz/0dB/L&R 31 10kHz/0dB/L* 11 16kHz/0dB/L&R 32 20kHz/0dB/L* 12 18kHz/0dB/L&R 33 100Hz/0dB/R* 13 20kHz/0dB/L&R 34 1kHz/0dB/R* 14 1kHz/0dB/L&R 35 10kHz/0dB/R* 15 1kHz/-1dB/L&R 36 20kHz/0dB/R* 16 1kHz/-3dB/L&R 37 100Hz Squer Wave//L&R 17 1kHz/-6dB/L&R 38 1kHz Squer Wave//L&R 18 1kHz/-10dB/L&R 39 1kHz w/emphasis/-0.37dB/L&R 19 1kHz/-20dB/L&R 40 5kHz w/emphasis/-4.53dB/L&R 20 1kHz/-60dB/L&R 41 16kHz w/emphasis/-9.04dB/L&R 21 1kHz/-80dB/L&R

Displayed Contents

TRACK

No.

Displayed Contents

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

– 4 –

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

42 ! ” # $%& ´ (21h to 27h)1kHz 0dB L&R N All the same 43 ( ) + , – . / (28h to 2Fh) N All the same

44 01234567 (30h to 37Fh) N All the same 45 8 9 : ; < = > ? (38h to 3Fh) N All the same 46 @A B C D E FG (40h to 47Fh) N All the same 47 H I J K L MN O (48h to 4Fh) N All the same 48 P Q R S T U VW (50h to 57Fh) PQR S T U VW (50h to 57h) 49 X Y Z [ ¥ ] ^ _ (58h to 5Fh) XY Z [ \ ] ^ _ (58···· 50 a b c d e f g (60h to 67Fh) a b c d e f g (60h to 67h)

′

51 h i j k l m n o (68h to 6Fh) N All the same 52 p q r s t u v w (70h to 77Fh) p q r s t u v w (70h to 77h) 53 x y z { I } (78h to 7Fh) x y z { } ~ (78····

54 i¢£¤¥ § (A0h to A7h) 8859-1 i ¢ £ ¤ ¥ § (A0···· is not displayed 55 ≥ C ª¬PR (A8h to AFh) ≥ (A8···· C ª ¬ P R – are not displayed 56

•±23

57 †1º ¿ (B8h to BFh) † ¿ (B8····

–

µ¶ • (B0h to B7h) µ • (B0····

′

14123

′

• ± 2 3

¶ are not displayed

14123

º are not displayed

58 АБВГДЕЖЗ (C0h to C7Fh) ÀÁ Â Ã Ä ÅÆÇ (C0h to C7h) 59 ÈÉÊË ÌÍÎÏ (C8h to CFh) N All the same 60 DСТУФХЦ (D0h to D7Fh) D СТУФХЦ (D0h to D7h)

61 ШЩЪЫЬY Я (D8h to DFh) Ù Ú Û Ü Y ß (D8····

62 абвгдежз (E0h to E7h) а бвгдежз (E0h to E7h) 63 ийклмноп (E8h to EFh) N All the same 64 ∂ стуфхц÷ (F0h to F7Fh) стуфхц÷ (F0h to F7h) 65 шщъыьy я (F8h to FFFh) шщъыьy я (F8h to FFh)

66 No.66 N All the same 67 No.67 N All the same

to to to

99 No.99 N All the same

– 5 –

LOCATION OF PARTS AND CONTROLS

Front Panel

SECTION 2

GENERAL

1 2 3456 78 9

STANDBY

1/u

@¡

X-FADE

@™

NO DELAY

MEGA

CONTROL

@£

1 I/u (power switch) button 2 Front cover 3 PLAY MODE button 4 REPEAT button 5 GROUP FILE button 6 Display window 7 GROUP 1-5 buttons 8 TIME/TEXT button 9 INPUT button !º MEMO SEARCH button !¡ JOG dial (DISC/CHARACTER/PUSH ENTER knob) !™ FADER button

PUSH OPEN

PLAY MODE REPEAT GROUP FILE 1 2 3

PULS ONE

!£ CHECK button !¢ CLEAR button !∞ ± button !§ ≠ button !¶ p button !• P button !ª · button @º PLUS ONE button @¡ X-FADE button @™ NO DELAY button @£ MEGA CONTROL button

GROUP

•

DISC/CHARACTER

TIME/TEXT

INPUT

MEMO SEARCH

PUSH ENTER

4 5 CHECKFADER CLEAR

!¡

!™

!£

!¢

∞

– 6 –

SECTION 3

DISASSEMBLY

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

CASE, FRONT PANEL

two screws

(M3

two screws (BVTT3

claw

screw (BVTT3

two screws (M3

cas

front panel

TABLE (50)

table (50)

screw (PTPWH2.6

three screws (BVTT3

wire (flat type) (19 core) (CN503)

claw

bracket (ILLUMINATION)

screw (BVTT3

connector (NO 806)

– 7 –

CD MECHANISM DECK SECTION

)

two screws

connector (CN52)

connector (CN51)

!¡

connector (CN61)

screw (P3

ring (B)

screw (BVTT3

14)

(BVTP3

reinforcement

two screws (BVTT3

10)

connector (CN53)

base (LOADING)

wire (flat type) (16 core) (CN102)

screw (BVTT3

wire (flat type) (9 core (CN103)

connector

screw (BVTT3

!™

(CN54)

base (CDM)

AUDIO BOARD, MAIN BOARD

two screws

ring (A)

screw (BVTP3

two screws (BVTT3

connector (CN 801)

two screws (BVTT3

!¡

AUDIO board

MAIN board

transformer cove

!º

connector (CN201)

screw (BVTT3

three screws (BVTP3

10)

– 8 –

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

!¡

sled motor (M102)

claw

gear cover

three claws

gear (B) (RP)

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

BD board

Removal four solders.

– 9 –

screw (B2

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

Remove the optical pick-up to direction of the arrow

sled shaft

claw

– 10 –

SECTION 4

TEST MODE

ADJ MODE

1. Press the I/u button to turn ON the power, and open the front

cover .

2. Place the CD on the slit, close the front cover, and chuck the the CD.

3. Press the I/u button to turn OFF the power.

4 Disconnect the power supply from the outlet.

5. Short-circuit the test point (TP ADJ) and test point (TP GND) of the MAIN board with a lead wire.

6. Insert the power plug into the outlet. The CD is played back automatically and the ADJ mode is set.

• Prohibits high speed search during accessing

• Ignores even if GFS becomes L

ADJ Mode Special Function Table

(The buttons shown in the ( ) function only when the remote commander provided is used.)

Button Function

(3)

Tracking servo, sled servo OFF

(8)

Tracking servo, sled servo ON CHECK CLEAR

Observation mode during S

Automatic eccentricity measurement (Not used for servicing)

Display of special functions in ADJ mode

• Observation mode during S When this mode is set, the below will be displayed. *1

ALL DISCS

CD1

S-JI mode

• Automatic eccentricity measurement (Not used for servicing) When this mode is set, the below will be displayed.The Sokuteichu count down display will be counted down from 4 to to 1 *2.After counting down, the eccentricity value will be displayed *3.

ALL DISCS

DISC

CD1

TRACK

MIN

NEXT DISC

SEC

Sokuteichu -4

Sokuteichu count down display

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

1. Short-circuit the test point (TP ADJ) and test point (TP AF ADJ) of the MAIN board with a lead wire.

2. Insert the power plug into the outlet. The whole fluorescent indicator tube lights up. When the SRAM is faulty, “SRAMNG” will be displayed.

3. Pressing the I/u button sets the key check mode. All buttons have individual button numbers. When a button is pressed, the button number is counted up and displayed.

1 DISCS

CD1

DISC

** **

Count up display Displays button numbe

Buttons and Corresponding Button Numbers

Button Button Number or Display

CLEAR CHECK FADER

MEMO SEARCH

INPUT

TIME/TEXT

PUSH ENTER

± ≠

REPEAT

PLAY MODE

I/u

X-FADE

NO DELAY

GROUP 5 GROUP 4 GROUP 3 GROUP 2 GROUP 1

GROUP FILE

PUSH OPEN

(DOOR SW ON)

0 1 2 3 4 5 6 8 9 14 15 16 17 18 24 25 26 27 28 29

STANDBY LED OFF

ALL DISCS

CD1

Henshin 021

Eccentricity value

– 11 –

PUSH OPEN

(DOOR SW OFF)

· P p

PLUS ONE

MEGA CONTROL

DISC/CHARACTER

STANDBY LED ON

All lit (LED lights up) Partially lit 1 (LED lights up) Partially lit 2 LED lights up Partially lit 3 (LED lights up)

Partially lit 4 Each time JOG is rotated, GROUP FILE 1 2 3 4 5 is displayed on the fluorescent indicator tube, and 1, 2, 3, 4, 5 light up one by one, and GROUP LED 1, 2, 3, 4, 5 lights up one by one. Clockwise : GROUP FILE 1n2n3n4n5 Counterclockwise : GROUP FILE

5n4n3n2n1

Partially lit 1

1 DISCS

CD1

A B C D E F

Partially lit 2

1 DISCS

CD1

Partially lit 3

1 DISCS

2nd

Partially lit 4

1 DISCS

FLUORESCENT INDICATOR TUBE AND LED CHECK MODE

This mode is set by pressing the I/u button while pressing the

[CHECK] and [PLUSONE] buttons in order in the power-off

(standby) state. The whole fluorescent indicator tube lights up, and the

[MEGACONTROL], [GROUP1-5], [PLUSONE], · and

P LEDs light up. This mode can be exited by pressing the I/u button.

SHIPMENT MODE (Set to this mode when returning the unit to the user.)

This mode is set by pressing the I/u button while pressing the

[PUSHENTER] and [PLUSONE] buttons in order in the power -

off (standby) state. The power goes off automatically after the SRAM is all-erased and the BD is opened (loading out state).

CD1

GROUP FILE

[STANDBY],

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 oper ations. 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.

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

* DISC No. 40 chucks twice during one cycle.

To differentiate, the “ fluo rescent indicator tube will light up during the second chucking.

Special Functions in Aging Mode

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*

[2nd]” on the block indicator of the

Test points and connecting points:

[MAIN BOARD] – CONDUCTOR SIDE –

(GND)

R505

(AFADJ)

IC201

CN704 CN702

R504

TP (ADJ)

IC501

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”.)

– 12 –

*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.

Aging carried

(Hexadecimal

Error Display

1 DISCS

DISC

CD1

1Err*01

1 DISCS

DISC

51 1

Disc number

CD1

TRACK

Track number

MIN

SEC

0.02

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 setting

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 display 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 aging cycle, the number displayed on the Fluores-

cent indicator tube will increase.

11. To end aging, press the I/

u button

Disc number Error code

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 code

Code number

Err 01 Err 02 Err 03 Err 04 Err 05 Err 06 Err *1 Err *2 Err *3 Err *4 Err *5 Err *6

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

DISC sensor check 1 DISC sensor check 2

Table operation check 2 Loading operation check 1 Loading operation check 2 BU related check 1 BU related check 2 BU related check 3 BU related check 4 BU related check 5 BU related check 6

Name

No disc in the specified slit Disc in other slits No function No table sensor input Load in timeover Load out timeover Access timeover High speed search NG Q data read error BU operation (From focus search to until signal can be read) timeover GFS monitor error Focus cannot be imposed by focus search

– 13 –

Contents

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 MAIN board.

oscilloscope

MAIN board TP501

3. While pressing the

button

GND HHOUT D.SENS

D.SENS (CH1)

HHOUT (CH2)

GND

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

CHECK button

CLEAR button

PLUS ONE button

≠

button

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

Lit according to rotational direction

DISC No.

ALL DISCS

CD1

DISC

SEC

73** .

PLUS ONE

Blinks

5. The disc table rotates in the clockwise direction. The disc table rotation time is displayed with ‘’PLUS ONE” slit as a measu ring point.

6. Press the

[CLEAR] button, to be rotated the disc table counterclockwise.

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

– 14 –

8. Mo ve the holder (sensor) center so that the flat portion center at the top of the D.SENS (CH1) input waveform and the ‘’H” center of

HHOUT (CH2) coincide.

Flat portion center of

HHOUT (CH2) waveform

D.SENS (CH1) waveform

Fixed screw

D. SENS (CH1) waveform

Holder (sensor)

9. Tighten the fixed screw to fix the disc table, then press the

[CLEAR] button.

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

D.SENS (CH1) input waveform and the ‘’H” center of HHOUT (CH2) conform.

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.

Contets of the fluorescent indicator tube's display in the loading mode

ALL DISCS

ON IN OFF

Loading OUT SW condition

CD1

DISC

Loading direction

Loading IN SW condition

– 15 –

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

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.

[CHECK] button, and set the loading mode.

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

– 16 –

SECTION 6

Center of the waveform

Traverse waveform

A (DC voltage)

0 V

level: 0.9

0.45 Vp-p

)

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 MAIN board and connect TP (GND)

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 mode” will be displayed on

the fluorescent indicator tube, and focus search will be repeated.

10. Check the oscilloscope waveform (S-curv e) is symmetrical be-

tween A and B. And confirm peak to peak level within 1.8 ±

0.6 Vp-p.

S-curve waveform

symmetry

within 1.8

0.6 Vp-p

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

Note : A clear RF signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RF signal waveform

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

level: 1.8 Vp-p

+0.3 –0.2

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 MAIN board and connect TP (GND) 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 waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 10%

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.

• T ake sweep time as long as possible and light up the br ightness to obtain best waveform.

RF Level Check

oscilloscope

(AC range)

BD board

TP (RF)

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 (RF) of the BD board.

7. Connect TP (ADJ) of the MAIN board and connect TP (GND) with a lead wire.

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

9. Playback the fifth track of the disc.

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

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

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.

– 17 –

C (DC voltage

When a general remote commander is not used:

)

1. Solder lead wires to TP (DVDD) and TP (TOFF) on the BD board severally.

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

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

4. Open the front cover, and press the

[PLUSONE] button.

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

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

7. Playback the fifth track of the disc.

8. Short-circuit the lead wire connected at step 1. (The tracking servo is turned OFF)

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

Traverse waveform

Center of the waveform

RF PLL Free-run Frequency Check

Procedure :

1. Connect the frequency counter to TP (PCK) of the BD board.

frequency counte

2. Press the I/

BD board

TP (PCK)

u button and turn ON the power supply.

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

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

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

6. Playback th e fifth track of the disc.

7. Confirm that reading on frequency counter is 4.3218 MHz ± 30 kHz.

0 V

A (DC voltage

level: 1.3 ± 0.5 Vp-p

10. Disconnect the lead wire short-circuited at step 8. (The tracking servo is turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 8.

Traverse waveform

C (DC

0 V

Tracking servo

OFF

Tracking servo

voltage)

11. Turn OFF the power, and remove the lead wire connected at step 1.

About RV601 on the MAIN board

RV601 of the MAIN board requires no adjustments. Please note that it should be dixed to mechanical center position when you moved and do not know origin position.

– 18 –

+ 40 hidden pages