SONY CFD V20 Service Manual

CFD-S550

SERVICE MANUAL

Ver 1.1 2004. 09

Section

US Model

Canadian Model

Model Name Using Similar Mechanism CFD-S200

CD Mechanism Type KSM-213RDP Optical Pick-up Name KSS-213R Model Name Using Similar Mechanism CFD-S200

Tape Transport Mechanism T ype MF-S200

E Model

AUDIO POWER SPECIFICATIONS (US model)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 3.2-ohm loads, both channels driven from 150 - 6,300 Hz; rated 1.8 W per channelminimum RMS power, with no more than 10% total harmonic distortion in AC operation.

Other Specifications CD player section

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs Wave length: 780 nm Emission duration: Continuous Laser output: Less than 44.6 µW (This output is the value measured at a distance of about 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.)

Spindle speed

200 r/min (rpm) to 500 r/min (rpm) (CLV)

Number of channels

Frequency response

20 - 20,000 Hz +1/–2 dB

Wow and flutter

Below measurable limit

SPECIFICATIONS

Radio section

Frequency range

FM: 87.5 - 108 MHz US, CND, E92, MX model: AM: 530 - 1,710 kHz EA, KR, SP model: AM: 531 - 1,611 kHz (9 kHz step)

530 - 1,610 kHz (10 kHz step)

FM: 10.7 MHz AM: 450 kHz

Antennas

FM: Telescopic antenna AM: Built-in ferrite bar antenna

Cassette-corder section

Recording system

4-track 2 channel stereo

Fast winding time

Approx. 120 sec. with Sony cassette C-60

Frequency response

TYPE I (normal): 80 - 10,000 Hz

– Continued on next page –

9-877-082-02

CD RADIO CASSETTE-CORDER

Sony Corporation

Personal Audio Company Published by Sony Engineering Corporation

CFD-S550

General

Speaker

Full range: 10 cm dia.,

3.2 Ω, cone type (2)

Input

LINE IN jack (stereo minijack): US, CND model Minimum input level 330 mV

Outputs

Headphones jack (stereo minijack) For 16 - 68 Ω impedance headphones

Power output

2.3 W + 2.3 W (at 3.2 Ω, 10% harmonic distortion)

Power requirements

For CD radio cassette-corder: US, CND, E92, MX model: 120 V AC, 60 Hz EA model 110 - 127 V, 220 - 240 V AC selectable, 50/60 Hz KR model: 220 V AC, 60 Hz SP model: 230 V AC, 50 Hz 9 V DC, 6 size D (R20) 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. 13.5 h Sony alkaline LR20: approx. 20 h

Tape playback

Sony R20P: approx. 7.5 h Sony alkaline LR20: approx. 15 h

CD playback

Sony R20P: approx. 2.5 h Sony alkaline LR20: approx. 7 h

Dimensions

Approx. 386 × 173 × 269 mm (w/h/d)

1/4 × 6 7/8 × 10 5/8 inches) (incl. projecting parts)

(15

Mass

Approx. 3.5 kg (7 lb. 11 oz.) (incl. batteries)

Supplied accessories

AC power cord (1) Remote control (RMT-CS400A) (1)

Design and specifications are subject to change without notice.

•Abbreviation CND : Canadian model E92 : AC 120V area in E model MX : Mexican model EA : AC 110-127V/220-240V area in E model KR : Korean model SP : Singapore model

CAUTION

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

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270˚C during 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.

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.

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 pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

SAFETY-RELATED COMPONENT WARNING!!

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 P ARTS 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 P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMA TIQUES 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.

1. SERVICING NOTES......................................................... 4

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

3. DISASSEMBLY

3-1. Cabinet (Upper) Assy.......................................................... 7

3-2. Cabinet (Front) Assy, Cabinet (Rear) Assy ......................... 7

3-3. Wires ................................................................................... 8

3-4. MD Block............................................................................ 8

3-5. Holder (Cassette)................................................................. 9

3-6. LCD Board .......................................................................... 9

3-7. Main Board ....................................................................... 10

3-8. Tuner Board....................................................................... 10

3-9. Power Board, VOL SEL Board ......................................... 11

3-10. CD Lid............................................................................... 11

3-11. CD Block Assy.................................................................. 12

3-12. Optical Pick-up ................................................................. 12

3-13. R/P Head (HRP301), TC Board ........................................ 13

3-14. Motor Assy (M801), Main Belt (B), Sub Belt (B) ............ 13

CFD-S550

4. MECHANICAL ADJUSTMENTS............................... 14

5. ELECTRICAL ADJUSTMENTS

Tape Section .......................................................................... 14

Tuner Section......................................................................... 15

CD Section ............................................................................ 16

6. DIAGRAMS

6-1. IC Pin Description............................................................. 17

6-2. Circuit Boards Location .................................................... 17

6-3. Block Diagram – CD Section –......................................... 18

6-4. Block Diagram – Main Section –...................................... 19

6-5. Printed Wiring Board – CD Section – ............................... 20

6-6. Schematic Diagram – CD Section –.................................. 21

6-7. Printed Wiring Board – Tuner Section – ........................... 22

6-8. Schematic Diagram – Tuner Section –.............................. 23

6-9. Printed Wiring Boards – Main Section – .......................... 24

6-10. Schematic Diagram – Main Section (1/2) – ...................... 25

6-11. Schematic Diagram – Main Section (2/2) – ...................... 26

6-12. Printed Wiring Board – TC Section – ............................... 27

6-13. Schematic Diagram – TC Section – .................................. 28

6-14. Printed Wiring Boards – Control Section –....................... 29

6-15. Schematic Diagram – Control Section – ........................... 30

6-16. Printed Wiring Boards – Power Supply Section – ............ 31

6-17. Schematic Diagram – Power Supply Section –................. 32

6-18. IC Block Diagrams............................................................ 33

7. EXPLODED VIEWS

7-1. Main Section ..................................................................... 36

7-2. Cabinet (Front) Section ..................................................... 37

7-3. Cabinet (Upper) (1) Section .............................................. 38

7-4. Cabinet (Upper) (2) Section .............................................. 39

7-5. Cabinet (Rear) Section ...................................................... 40

7-6. Tape Mechanism Section .................................................. 41

7-7. CD Mechanism Section .................................................... 42

8. ELECTRICAL PARTS LIST......................................... 43

CFD-S550

SECTION 1

SERVICING NOTES

CHUCK PLATE JIG ON REPAIRING

On repairing CD section, playing a disc without the lid (CD), use Chuck Plate Jig.

• Code number of Chuck Plate Jig: X-4918-255-1

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

1. Turn ON the [POWER] button and press [CD] button to CD

position.

2. Open the CD lid.

3. Turn on S801 with screwdriver, etc. as following figure.

4. Press the N X (CD) button.

5. Confirm the laser diode emission while observing the objecting

lens. When there is no emission, Auto P ower Control circuit or Optical Pick-up is broken. Objective lens moves up and do wn three times for focus search.

S801

Location of controls

Inserting a cassette

With the side you want to play facing you

LINE (US, Canadian model)

LINE IN (US, Canadian model)

SLEEP

POWER

Loading a CD

., >

TUNE –, +

SECTION 2

GENERAL

With the labeled side up

Z PUSH OPEN/CLOSE

SOUND MODE

MEGA BASS

MEGA Xpand

Remote Control

SLEEP

FUNCTION

Number buttons

MODE

.,>

BAND

MEGA Xpand

CFD-S550

This section is extracted from instruction manual.

POWER

VOL +*,–

TUNE –, + SOUND

MEGA BASS

CD RADIO BAND

AUTO PRESET

TAPE

Display

MODE

OPR/BATT

Number buttons

DISPLAY ENT MEMORY

VOL –, +*

*The button has a tactile dot.

Remote sensor

Display

Total track number Programmed track Playing order

Total playing time

CFD-S550

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

SET

3-1. CABINET (UPPER) ASSY

(Page 7)

3-2. CABINET (FRONT) ASSY,

CABINET (REAR) ASSY (Page 7)

3-3. WIRES

(Page 8)

3-4. MD BLOCK

(Page 8)

3-5. HOLDER (CASSETTE)

(Page 9)

3-7. MAIN BOARD

3-6. LCD BOARD

(Page 10)

3-10. CD LID

(Page 11)

(Page 9)

3-8. TUNER BOARD

(Page 10)

3-13. R/P HEAD (HRP301),

TC BOARD (Page 13)

3-11. CD BLOCK ASSY

(Page 12)

3-12. OPTICAL PICK-UP

(Page 12)

3-9. POWER BOARD,

VOL SEL BOARD (Page 11)

3-14. MOTOR ASSY (M801),

MAIN BELT (B), SUB BELT (B) (Page 13)

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

CFD-S550

3-1. CABINET (UPPER) ASSY

screw (2.6)

BTP 2.6x10

CNP808

CNP802

handle

screw (2.6)

CD lid

screw (2.6)

cabinet (upper) ass

CNP804

connector

(S801)

holder (cassette)

3-2. CABINET (FRONT) ASSY, CABINET (REAR) ASSY

PWH 2.6x10

HEADPHONE board

screw (2.6)

CNP323

battery lid

screw (2.6)

CNP302

CNP803

CNP807

CNP806

cabinet (front) assy

cabinet (rear) assy

CFD-S550

3-3. WIRES

Put flat cable and wires between the cabinets and push them in the grooves located at A to E in the figure to prevent disconnection before assembling the set.

from HEADPHONE board

cabinet front

3-4. MD BLOCK

cabinet rear

BVTP 2.6x8

MD block

BVTP 2.6x8

3-5. HOLDER (CASSETTE)

spring (cassette)

damper

BVTP 2.6x

CFD-S550

3-6. LCD BOARD

holder (cassette)

BVTP 2.6x8

LCD board

BVTP 2.6x8

bracket (LCD board)

CFD-S550

3-7. MAIN BOARD

PWH 2.6x10

HEADPHONE board

CNP322

CNP902

MAIN board

BVTP 2.6x8

3-8. TUNER BOARD

CNP1

telescopic antenna

B 3x

BVTP 2.6x8

claws

TU chassis

CNP1

TUNER board

3-9. POWER BOARD, VOL SEL BOARD

CD lid

claw

spring (CD)

claw

POWER board

BVTP 2.6x8

BVTP 2.6x10

CFD-S550

3-10. CD LID

CNP901

CNP902

BVTP 2.6x8

VOL SEL board

Saudi Arabia model only

chassis (VOL PWB)

BTP 2.6x6

CFD-S550

)

3-11. CD BLOCK ASSY

CD cover

claws

3-12. OPTICAL PICK-UP

sled shaft

PWH 2.6x10

claws

optical pick-up

claw

CD block ass

PWH 2.6x10

gear (A)

PWB tapping (M2

PWB tapping (M2)

3-13. R/P HEAD (HRP301), TC BOARD

)

claws

Removal the solders.

BVTT 2x4

lug

CFD-S550

TC boar

R/P head (HRP301)

3-14. MOTOR ASSY (M801), MAIN BELT (B), SUB BELT (B)

main belt (B)

pan M2.6x4.5

sub belt (B)

motor bracket

motor assy (M801

bind DT M2x6

CFD-S550

SECTION 4

MECHANICAL ADJUSTMENTS

SECTION 5

ELECTRICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened swab :

record/playback head pinch roller erase head rubber belts capstan idlers

2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head magnetizer close to the erase head.)

3. Do not use a magnetized screwdriver for the adjustments.

4. The adjustments should be performed with the rated power supply voltage (9V) unless otherwise noted.

Torque Measurement

Mode Torque meter Meter reading

2.95 – 6.86 mN • m

FWD CQ-102C (30 – 70 g • cm)

(0.42 – 0.97 oz • inch)

FWD Back Tension

FF CQ-201B (more than 60 g • cm)

REW CQ-201B (more than 60 g • cm)

CQ-102C (1.5 – 5.5 g • cm)

0.15 – 0.53 mN • m

(0.021 – 0.076 oz • inch)

more than 5.88 mN • m

(more than 0.83 oz • inch)

more than 5.88 mN • m

(more than 0.83 oz • inch)

TAPE SECTION 0 dB = 0.775 V

• Standard Output Level Output terminal HP OUT

load impedance 32 Ω

output signal level 0.25 V (–10 dB)

• Test T ape

Type Signal Used for

WS-48A 3 kHz, 0 dB tape speed adjustment

Tape Speed Adjustment

Procedure:

Mode: playback

test tape WS-48A (3 kHz, 0 dB)

set

jack (J321)

Adjust so that the value on the digital frequency counter is 3,000 Hz.

digital frequency counter

Ω

Tape Tension Measurement

Mode Tension meter Meter Reading

FWD CQ-403A

more than 100 g

(more than 3.53 oz)

Specification Value:

Digital frequency counter

2,940 to 3,060 Hz

Adjust so that the frequency at the beginning and that at the end of tape winding are between 2,970 to 3,030 Hz.

Adjustment Location:

Tape speed adjustment control inside motor

CFD-S550

)

TUNER SECTION 0 dB = 1 µV

• FM Section

Setting:

RADIO BAND•AUTO PRESET button: FM

FM RF signal generator

TP (FM IN)

0.01

75 kHz frequency deviation by 1 kHz signal output level : as low as possible

• AM Section

Setting:

RADIO BAND•AUTO PRESET button: AM

AM RF signal generator

30% amplitude modulation by 400 Hz signal

• Connecting Level Meter (FM and AM)

set

Put the lead-wire antenna close to the set.

level meter (range: 0.5–5 V ac

32 Ω

set

FM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

10.7 MHz

FM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 87.5 MHz 108 MHz Reading on Digital voltmeter 1.3 ± 0.3 V 3.0 ± 0.2 V Adjustment Part <confirmation> L2

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 CT1

87.5 MHz 108 MHz

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

450 kHz

AM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 530 kHz 1,710 kHz Reading on Digital voltmeter 1.0 ± 0.05 V 5.3 ± 0.7 V Adjustment Part L4 <confirmation>

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 CT3

620 kHz 1,400 kHz

i jack (J321)

• Connecting Digital Voltmeter (FM and AM)

digital voltmeter

100 kΩ

TP (VT)

•Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

Adjustment Location: See page 16.

CFD-S550

Adjustment Location:

– MAIN board (component side) –

TP (FM IN)

(CONDUCTOR SIDE)

ADJUSTMENT

CT1

IC1

CT1, L1

TRACKING

ADJUSTMENT

FREQUENCY

COVERAGE

ADJUSTMENT

CT3, L3

TRACKING

ADJUSTMENT

CT3

TP (VT)

(CONDUCTOR SIDE)

FREQUENCY

COVERAGE

ADJUSTMENT

IC2

CD SECTION

CD section adjustments are done automatically in this set. In case of operation check, confirm that focus bias.

FOCUS BIAS CHECK

1. Connect the oscilloscope between IC701 pin 4 and pin qa (or TP (RF) and TP (VREF)).

2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)

3. Press the N X (CD) button.

4. Confirm that the oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape ( ) in the center of the waveform can be clearly distinguished.

• RF signal reference waveform (eye pattern)

VOLT/DIV : 50 mV (10 : 1 probe in use) TIME/DIV : 500 nS

RF level :

0.85 ± 0.2 Vp-p

When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.

Test Point:

– CD board (conductor side) –

C738

C739

C732

(VREF)

R706

JW709

R701

(VREF)

R709

R705

C707

(TE)

R703

(TE)

JW706

R702

JW708

R710

C736

R704

(FE)

JC703

C708

R711

C705

(RF)

JW707

(RF)

C734

C742

R708

R723

C731

C743

C703

C709

R729

JW726

IC701

C711

C746

C744

C716

C730

JW724

C747

C745

C717

FB701

SECTION 6

DIAGRAMS

6-1. IC PIN DESCRIPTION

• IC802 uPD789477GC-A27-8BT (SYSTEM CONTROLLER)

Pin No. Pin Name I/O Pin Description

1, 2 NC — Not used. (Open) 3 to 5 VLC2 to 0 I LCD drive bias voltage input 6 to 9 COM0 to 3 O LCD drive common output

10 to 26 S0 to 16 O LCD drive segment output

27 REC I Tape record signal input H: REC 28 AC-CHK I AC power supply detection signal input L: AC in 29 CD-DOOR I CD door open/close switch input L: Close 30 S-ROCK O ROCK LED control signal output 31 S-POP O POP LED control signal output 32 S-JAZZ O JAZZ LED control signal output 33 S-VOCAL O VOCAL LED control signal output 34 LINE IN O LINE IN control signal output 35 A-MUTE O Audio mute output H: Mute 36 CD O CD function output H: CD 37 TAPE O Tape function output H: Tape 38 AVDD — Analog power supply pin for A/D converter (+3.3 V) 39 BTT-CHK-H I Battery check input for Hi-voltage 40 BTT-CHK-M I Battery check input for Mid-voltage 41 V CHECK I Voltage check input

42 to 45 KEY4 to 1 I Key input

46 MODE CHK I Destination setting input 47 AGND — Analog ground for A/D converter 48 REMOTE I Sircs receiver data input 49 TC-PLAY I Tape play switch input L: Play 50 WP/INI O Wake-up/Initial setting read signal output 51 3.3V MONITOR I 3.3V MONITOR signal input 52 C-WRQ I CD write request data input 53 C-DOUT I CD digital signal processor data input 54 C-DIN O CD digital signal processor data output 55 C-CLK I CD serial data transfer clock signal input 56 R-COUNT I Tuner PLL IF count input 57 R-DATA O Tuner PLL data output 58 R-CLK O Tuner PLL clock output 59 R-LAT O Tuner PLL latch output 60 B-MUTE O Tuner mute signal output H: Mute 61 C-DRF I CD DRF signal input 62 C-CE O CD chip enable output 63 C-FSEQ I CD frame SYNC input 64 C-XRT O CD system reset output 65 P-CON O System power control output H: PCON 66 ISS1 O ISS1 output 67 ISS2 O ISS2 output 68 DBB O MEGA BASS control output H: MEGA BASS off, L: MEGA BASS on 69 ICO I Connected to VSS. 70 XT1 I Sub system oscillation input (32.768 kHz) 71 XT2 O Sub system oscillation output (32.768 kHz) 72 VDD — Main power supply pin for A/D converter (+3.3 V) 73 VSS — Main ground 74 X1 I Main system oscillation input (4.19 MHz)

Pin No. Pin Name I/O Pin Description

75 X2 O Main system oscillation output (4.19 MHz) 76 RST I System reset input 77 V-CLK O Volume clock output 78 V-DATA O Volume data output 79 SCL O EEPROM clock output 80 SDA I/O EEPROM input/output

6-2. CIRCUIT BOARDS LOCATION

LINE IN board (US, Canadian model only)

POWER KEY board

CD BUTTON board

HEADPHONE board

FUNCTION KEY board

LCD board

POWER board

VOL SEL board (Saudi Arabia model only)

BATTERY (2) board

TEN KEY board

MAIN board

TC board

BATTERY (1) board

CFD-S550

CD board

VOL board

SOUND boar

TUNER board

17 17

+ 39 hidden pages

SONY CFD V20 Service Manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

DISASSEMBLY

MD block

holder (cassette)

LCD board

MAIN board

TUNER board

CD lid

optical pick-up

MECHANICAL ADJUSTMENTS

ELECTRICAL ADJUSTMENTS

CD SECTION

DIAGRAMS