Sony Cdp-xa20es User manual

MICROFILM

CDP-XA20ES

COMPACT DISC PLAYER

SERVICE MANUAL

US Model

Canadian Model

AEP Model

UK Model

E Model

Photo: Black

EXCEPT UK

SPECIFICATIONS

Model Name Using Similar Mechanism NEW

CD Mechanism Type

CDM36B-14C

Base Unit Type BU-14C

Optical Pick-up Type KSS-213B

– Continued on next page –

– 2 –

TABLE OF CONTENTS

1. SERVICING NOTES

1-1. How to Open the Disc Tray When Power Switch

Turns Off.......................................................................... 4

1-2. Preparation for Adjustment and Measurement ................ 4

2. GENERAL ................................................................... 5

3. DISASSEMBLY.......................................................... 6

4. TEST MODE

4-1. AF Mode.......................................................................... 11

4-2. ADJ Mode ....................................................................... 12

5. ELECTRICAL ADJUSTMENTS .......................... 13

6. DIAGRAMS

6-1. IC Pin Function Description ............................................ 15

6-2. Block Diagram................................................................. 21

6-3. Printed Wiring Boards –BD Section –............................. 24

6-4. Schematic Diagram — BD Section — ............................ 27

6-5. Schematic Diagram — MAIN Section — ....................... 30

6-6. Printed Wiring Boards — MAIN Section —................... 33

6-7. Schematic Diagram — POWER Section —.................... 35

6-8. Printed Wiring Boards — POWER Section — ............... 37

6-9. Printed Wiring Boards — PANEL Section —................. 39

6-10. Schematic Diagram — PANEL Section — ..................... 41

7. EXPLODEDVIEWS ................................................. 47

8. ELECTRICAL PARTS LIST .................................. 52

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 PUB-

LISHED BY SONY.

MODEL IDENTIFICATION

– BACK PANEL –

4-991-138-

AEP Model : 0

UK Model : 1

Singapore Model : 2

US Model : 3

Canadian Model : 4

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 COM-

POSANTS QUE PAR DES PIÈCES SONY DONT LES

NUMÉROS SONT DONNÉS DANS CE MANUEL OU

DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

– 3 –

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro-

static 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 emis-

sion, observe from more than 30 cm away from the objective lens.

Notes on chip component replacement

•Never reuse a disconnected chip component.

•Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270 ˚C dur-

ing repairing.

•Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

•Be careful not to apply force on the conductor when soldering

or unsoldering.

This appliance is classified as a CLASS 1 LASER product.

The CLASS 1 LASER PRODUCT MARKING is located on

the rear exterior.

Laser component in this product is capable of emitting radiation

exceeding the limit for Class 1.

The following caution label is located inside the unit.

CAUTION

Use of controls or adjustments or performance of

procedures other than those specified herein may

result in hazardous radiation exposure.

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing 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 TEST

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. 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” indica-

tion is 0.75 V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-

amples of a passive VOM that is suitable. Nearly all battery

operated digital multimeters that have a 2VAC range are suit-

able. (See Fig. A)

1.5 k

Ω

0.15

FAC

voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

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

– 4 –

SECTION 1

SERVICING NOTES

1-2. PREPARATION FOR ADJUSTMENT AND

MEASUREMENT

Perform connecting the IC361 pin 2of BD board to the line of

+5V because this unit does not work without the stabilizer struc-

turally.

Connecting Location:

[BD BOARD] – Side B –

1-1. HOW TO OPEN THE DISC TRAY WHEN

POWER SWITCHTURNS OFF

1Insert a tapering driver into the aperture of the unit bottom,

and move the limiter (LEVER) to direction of the arrow A.

2Pull the tray to direction fo the arrow B.

To close the disc tray, move the driver in

the reverse direction (to IN direction).

tray

tapering driber

Limiter (LEVER)

IC361

IC351

TP (VCC)

IC102

CN102 CN103 CN105

– 5 –

SECTION 2

GENERAL This section is extracted

from instruction manual.

Location of Controls

•FRONT PANEL

@º !¶ !§!∞!¢!£ !¡!™!•!ª

861 23 54 7 9

@¡@™ @£ @¢

@§

@¶

@∞

!¶

@ª

!¢

!∞

@•

!£

123

456

789

–

1POWER Switch

2PHONES jack (EXCEPT UK)

3LINE OUT/PHONE LEVEL control (EXCEPT UK)

4PLAY MODE button

5TIME button

6Disc tray

7§OPEN/CLOSE button

8((play) button

9P(pause) button

0p(stop) button

!¡ 0/)(manual search) buttons

!™ ≠/±( AMS*) control

!£ FADER button

!¢ CLEAR (program clear) button

!∞ CHECK (program check) button

!§ EDIT/TIME FADE button

!¶ REPEAT button

(CLEAR REPEAT button on the remote commander)

!• PEAK SEARCH button

!ª AUTO SPACE button

@º Display

@¡ LINE OUT FIXED jack

@™ LINE OUT VARIABLE jack (EXCEPT UK)

@£ DIGITAL OUT OPTICAL jack

@¢ DIGITAL OUT COAXIAL jack (AEP, UK)

@∞ Play mode buttons

CONTINUE button

SHUFFLE button

PROGRAM button

@§ Numeric buttons

@¶ >10 (over 10) button

@• DISPLAY ON/OFF button

@ª A˜B button

#º LINE OUT LEVEL +/– buttons

* AMS is the abbreviation of Automatic Music Sensor.

•REMOTE COMMANDER

!¡

!™

•

••

•

•••

•REAR PANEL

•

••

•••••

••

•

#º

••••

•

••

•

– 6 –

• This set can be disassembled in the order shown below.

SECTION 3

DISASSEMBLY

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

LOADING PANEL SECTION

loading panel section

two hexagon hole bolts

(LID)

Pull the loading panel to

direction of the arrow

limiter (LEVER)

Insert a tapering driver,

and move the limiter (LEVER)

to direction of the arrow

LOADING PANEL

SECTION

(Page 6)

CASE,

FRONT PANEL SECTION

(Page 7)

MECHANISM

DECK SECTION

(Page 7)

BASE UNIT

(Page 8)

LOADING MOTOR (M103)

(Page 9)

POWER BOARD, MAIN BOARD

(Page 10)

SLED MOTOR (M101)

(Page 8)

OPTICAL PICK-UP

(KSS-213B/S-N)

(Page 9)

– 7 –

CASE, FRONT PANEL SECTION

MECHANISM DECK SECTION

four screws

(CASE 3 TP2)

four screws

(CASE 3 TP2)

screw

(BVTT 3

case

connector

(CN992)

wire (flat type) (11 core)

(CN106)

wire (flat type) (7 core)

(CN107)

wire (flat type)

(4 core)

(CN371)

two connectors

(CN471, 472)

screw

(BVTT 3

lug

!¡

two screws

(BVTT 3

!¡

two screws

(BVTT 3

!™

four screws

(BV 3

!™

screw (BV 3

EXCEPT UK

!£

front panel

HP board

three connectors

(CN201, 251, 903)

wire (flat type) (16 core)

(CN101)

six screws

(BVTT 3

sub panel

four screws

(BVTT 3

mechanism deck

(CDM36B-14C)

– 8 –

BASE UNIT

pull the tray

four screws

(BVTP 3

cover (F) (drawer)

two screws

(BVTP 3

panel (drawer)

two screws

(BVTP 3

cover (R) (drawer)

wire (flat type) (21 core)

(CN104)

screw

(BVTP 3

two lugs

!¡

base unit

(BU-14C)

wire (flat type) (16 core)

(CN104)

wire (flat type) (5 core)

(CN107)

Removal the two solders

of sled motor.

two screws

(BVTP 2.6

sled board

two screws

(P1.7

2.5)

sled motor

(M101)

SLED MOTOR (M101)

– 9 –

LOADING MOTOR (M103)

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

nylon rivet

lug

leaf spring

(spindle)

two nylon rivets

Removal the optical

pick-up to direction

of the arrow

lug

leaf spring (A) (OP)

claw

sled shaft

wire (flat type) (16 core)

(optical pick-up connector)

Pull the tray.

Hang the belt

screw

(BVTP 3

loading motor board

Remove the two

solders of loading motor.

two claws

loading motor

(M103)

connector

(CN103)

– 10 –

POWER BOARD, MAIN BOARD

two screws

(BV/RING)

three connectors

(CN901, 902, 951)

four screws

(BVTT 3

screw (BV/RING)

(AEP, UK)

power board

two screws

(BVTT 3

Removal the main board

to direction of the arrow

– 11 –

SECTION 4

TEST MODE

4-1. AF MODE

Connect the TP19 (AFADJ) on the BD board to the ground and

turn on the power supply.

The AF mode is then activated and the following check can be

made.

4-1-1. Fluorescent IndicatorTube Check

After confirming display of all on, keep pressing the following

button, and the following display is attained.

”(PLAY) button

(Display: 01)

(PAUSE) button

6810

12 14

16 18 20

(Display: 02)

(

count display button number

display

A track number on FL display tube increases if =AMS +

knob is rotated in +direction, or decreases in =direction.

Keep pressing the §OPEN/CLOSE button, and all on display is

attained again.

4-1-2. Key Check

All buttons are assigned with numbers respectively, and when each

button is pressed, it is counted and its number is displayed. Up to

“16” can be counted.

A button pressed once is not further counted but the number is

displayed. (Table 4-1)

Button Display Button Display

TIME 09 PUSH 24

ENTER

PLAY 10 EDIT/ 27

MODE TIME FADE

AUTO 18 REPEAT 28

SPACE

CHECK 19 PEAK 29

CLEAR 20 p33

FADER 21 (01

022 P02

)23 §all light

OPEN/CLOSE up

Table 4-1.

4-1-3. Remote Commander Check

All buttons are assigned with numbers respectively.

If a button is kept pressed, its button number is displayed on the

FL display tube of main unit. (Table 4-2)

(

button number

display

– 12 –

Table 4-3.

Button Display Button Display

1 00 10 32

201 >10 39

302 TIME 40

403 A – B 42

504 REPEAT 44

605 =48

706 +49

807 ·50

908 051

CHECK 13 )52

CLEAR 15 SHUFFLE 53

+18 p56

–19 P57

CONTINUE 29 DISPLAY 86

ON/OFF

PROGRAM 31 FADER 95

Table 4-2.

Button No. Test Mode

3 Tracking servo off

8 Tracking servo on

11 S-curve measuring mode

12 All servo off

13 Top turnblack display

14 Botton turnblack display

15 Center display

16 Optimum point display

17 Optimum jitter display

18 TE traverse display

19 VC, FE and RF display

20 Autogain display

(Focus, tracking and sled)

* For button numbers 3, 8, 11, and 12, use them only when an

oscilloscope is connected.

4-3. CLV-S MODE

The spindle servo can be operated for play in the CLV-S mode by

connecting TP18 (ADJ) and after turning on the power supply.

4-4. RELEASE THE TEST MODE

Disconnect the lead wire of test point connected in first step.

4-2. ADJ MODE

Connect the TP18 (ADJ) on the BD board to the ground and turn

on the power supply. The ADJ mode is then activated and the

following operation is executed.

• There is no problem even if Guarded Frame Sync is low value

continuously during playing.

• Do not perform high speed search during an access.

• The gain of focus servo and spindle servo does not lower during

playing.

• Manual operation and measurement of the servo system are pos-

sible. (For detailed operating method, see Table 4-3. in ADJ

Mode.)

4-2-1. Button OperationTable in ADJ Mode

After all music numbers are displayed, press the TIME button,

and the jitter display mode is then set. The button functions are as

listed below.

Button Functions (Operate with remote commander.)

Connecting Location:

[BD BOARD] – Side B –

TP19 (AFADJ) TP18 (ADJ)

IC102

IC351

IC361

– 14 –

Procedure:

1. Connect the oscilloscope to TP2 (FE) and TP (VC) on BD

board.

2. Connect the TP3 (FEI: IC101 pin @ª) and TP (VC) with lead

wire.

3. Turned power switch on.

4. Put disc (YEDS-18) in and turned power switch on again and

actuate the focus search. (actuate the focus search when disc

table is moving in and out.)

5. Confirm that the oscilloscope waveform (S-curve) is symmetri-

cal between A and B. And confirm peak to peak level within

3.0 ± 1.0 Vp-p.

S-curve waveform

6. After check, remove the lead wire connected in step 2.

Note: •Try to measure several times to make sure that 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

Connection:

Procedure:

1. Connect the oscilloscope to TP1 (RFO) and TP (VC) on BD

board.

2. Turned power switch on. (stop mode)

3. Put disc (YEDS-18) in and press the (button.

4. Confirm that the oscilloscope waveform is clear and check RF

signal level is correct or not.

Note: Clear RF signal waveform means that the shape “≈” can

be clearly distinguished at the center of the waveform.

RF signal waveform

SECTION 5

ELECTRICAL ADJUSTMENTS

VOLT/DIV: 200 mV

TIME/DIV: 500 ns

(with the 10: 1 probe

in use)

level: 1.2 Vp-p

+0.25

–0.20

–

BD board

TP2 (FE)

TP (VC)

oscilloscope

symmetry

within 3.0 ± 1.0 Vp-p

– 13 –

Notes:

1. CD block basically constructed to operate without adjustment.

Therefore, check each item in order given.

2. UseYEDS-18 disc (Part No.: 3-702-101-01) unless otherwise

indicated.

3. Use the oscilloscope with more than 10 MΩimpedance.

4. Clean an object lens by an applicator with neutral detergent

when the signal level is low than specified value with the fol-

lowing checks.

S-Curve Check

Connection: When observing the eye pattern, set the oscilloscope forAC range

and raise vertical sensitivity.

–

BD board

TP4 (TE)

TP (VC)

oscilloscope

(DC range)

level: 1.3 ± 0.7 Vp-p

–

TP13 (XPLCK)

BD board frequency counter

Symmetry

Procedure:

1. Connect the TP18 (ADJ) to ground and TP5 (TEI: IC101 pin

@¶) to TP (VC)with lead wire.

2. Connect the oscilloscope to TP4 (TE) and TP (VC) on BD

board.

3. Turned power switch on.

4. Put disc (YEDS-18) in and press the (button.

5. Confirm that the oscilloscope waveform is symmetrical on the

top and bottom in relation to A Vdc, and check this level.

Traverse waveform

A/B

100 is ± 20 % or less.

6. After check, remove the lead wire connected in step 1.

RF PLL Free-run Frequency Check

Connection:

Procedure:

1. Connect the frequency counter to TP13 (XPLCK).

2. Turned power switch on.

3. Put disc (YEDS-18) in and press the (button.

4. Confirm that the reading on frequency counter is 4.3218 MHz.

E-F Balance (Traverse) Check

Connection:

–

BD board

TP1 (RFO)

TP (VC)

oscilloscope

(AC range)

FOCUS/TRACKING GAIN ADJUSTMENT

VR in optical block is not adjusted.

As this gain has a margin, normally a little shift of gain will not

cause a problem.

If you happened to move VR and you are not sure the original

position, set it to the mechanical center.

Adjustment Location:

[BD BOARD] – Side B –

TP18 (ADJ)

IC361

CN102 CN105

TP13 (XPLCK)

TP (VC)

IC102

IC351

TP1 (RFO)

TP2 (FE) TP5 (TEI)

TP4 (TE)

CN103

– 15 – – 16 –

SECTION 6

DIAGRAMS

6-1. IC PIN FUNCTION DESCRIPTION

Pin No. Pin Name I/O Function

1 SRON O Sled servo drive PWM signal output terminal Not used (open)

2 SRDR O Sled servo drive PWM signal (–) output to the BA6297AFP (IC102)

3 SFON O Sled servo drive PWM signal output terminal Not used (open)

4 TFDR O Tracking servo drive PWM signal (–) output to the BA6297AFP (IC102)

5 TRON O Tracking servo drive PWM signal output terminal Not used (open)

6 TRDR O Tracking servo drive PWM signal (+) output to the BA6297AFP (IC102)

7 TFON O Tracking servo drive PWM signal output terminal Not used (open)

8 FFDR O Focus servo drive PWM signal (+) output to the BA6297AFP (IC102)

9 FRON O Focus servo drive PWM signal output terminal Not used (open)

10 FRDR O Focus servo drive PWM signal (–) output to the BA6297AFP (IC102)

11 FFON O Focus servo drive PWM signal output terminal Not used (open)

12 VCOO O Oscillator circuit output terminal for analog PLL of the playback EFM Not used (open)

13 VCOI I Oscillator circuit input terminal for analog PLL of the playback EFM Not used (fixed at “L”)

14 TEST I Input terminal for the test (fixed at “L”)

15 DVSS — Ground terminal (digital system)

16 TES2 I Input terminal for the test (fixed at “L”)

17 TES3 I Input terminal for the test (fixed at “L”)

18 PDO O Charge-pump output terminal for analog PLL of the playback EFM Not used (open)

19 VPCO O PLL charge-pump output terminal for the variable pitch Not used (open)

20 VCKI I Clock signal input from external VCO for the variable pitch Not used (fixed at “L”)

21 AVD2 — Power supply terminal (+5V) (analog system)

22 IGEN I Power supply terminal (+5V) (for operational amplifier)

23 AVS2 — Ground terminal (analog system)

24 ADIO O Output terminal of the operational amplifier Not used (open)

25 RFC I Input terminal for the A/D converter Not used (open)

26 RFDC I RF signal (DC level) input terminal for the digital servo process

27 TE I Tracking error signal input from the RF amplifier in optical pick-up

28 SE I Sled error signal input from the RF amplifier in optical pick-up

29 FE I Focus error signal input from the RF amplifier in optical pick-up

30 VC I Middle point voltage (+2.5V) input from the RF amplifier in optical pick-up

31 FILO O Filter output terminal for master clock of the playback master PLL

32 FILI I Filter input terminal for master clock of the playback master PLL

33 PCO O Phase comparison output terminal for master clock of the playback EFM master PLL

34 CLTV I Internal VCO control voltage input of the playback master PLL

35 AVS1 — Ground terminal (analog system)

36 RFAC I RF signal (AC level) input terminal for the EFM demodulator

37 BIAS I Constant current input terminal of the playback EFM asymmetry circuit

38 ASYI I Playback EFM asymmetry comparator voltage input terminal

39 ASYO O Playback EFM full-swing output terminal

40 AVD1 — Power supply terminal (+5V) (analog system)

41 DVDD — Power supply terminal (+5V) (digital system)

42 ASYE I Playback EFM asymmetry circuit on/off selection input terminal (fixed at “H”)

43 PSSL I Audio data output mode selection input terminal (fixed at “L”)

BD BOARD IC101 CXD2545Q

(DIGITAL SIGNAL PROCESSOR, FOCUS/TRACKING/SLED SERVO, EFM COMPARATOR)

Pin No. Pin Name I/O Function

44 WDCK O Word clock signal (88.2 kHz) output terminal Not used (open)

45 LRCK O L/R sampling clock signal (44.1 kHz) output to the CXD8505BQ (IC302)

46 DATA O DA16 output when PSSL=“H”, 48-bit slot serial data output when PSSL=“L”

(PSSL (pin $£)=fixed at “L”) Serial data output to the CXD8505BQ (IC302)

47 BCLK O DA15 output when PSSL=“H”, 48-bit slot bit clock signal output when PSSL=“L”

(PSSL (pin $£)=fixed at “L”) Bit clock signal (2.8224 MHz) output to the CXD8505BQ (IC302)

48 64 DATA O DA14 output when PSSL=“H”, 64-bit slot serial data output when PSSL=“L”