Sony CFDV-15 Service manual

CFD-V15/V24

SERVICE MANUAL

Ver 1.1 1998. 08

With SUPPLEMENT 1 (9-923-320-81) With SUPPLEMENT 2 (9-923-320-82)

Photo : CFD-V15

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 3.2-ohm, loads, both channels driven from 150 – 10,000 Hz ; rated 2W per channel-minimum RMS power, with no more than 10% total harmonic distortion in AC operation. (US model)

Other Specification 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

US Model

Canadian Model

CFD-V15

AEP Model

UK Model

CFD-V24

E Model

CFD-V15/V24

Model Name Using CD Section NEW Similar Mechanism Tape Section CFD-V10 Optical Pick-up Type KSM-213CDM T ape Transport Mechanism Type MF-V10-117

AM :530 – 1,710 kHz (US, Canadian, Central & South

America model) 531 – 1,602 kHz (Singapore, E, Saudi Arabia, AEP, UK, East European, Russian model)

526.5 – 1,606.5 kHz (Italian model)

Aerials FM: Telescopic aerial

AM : Built-in ferrite bar aerial

Cassette-corder section

Recording system

4-track 2 channel stereo

Fast winding time

Approx. 120 s (sec.) with Sony cassette C-60

Frequency response

TYPE I (normal): 70 – l0,000 Hz

General

Speaker Full range: 10 cm dia., 3.2 ohms, cone type (2) Outputs Headphones jack (stereo minijack)

For 16 – 68 ohms impedance headphones

Power output (excluding US model)

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

– Continued on page 2 –

Radio section

Frequency range

MICROFILM

FM : 87.6 – 108 MHz (US, Canadian,

Central & South America, E, Singapore model)

87.6 – 107 MHz (AEP, UK, Saudi Arabia, Russian model)

87.5 – 108 MHz (Italian model) 65 – 108 MHz (East European model)

CD RADIO CASSETTE-CORDER

Power requirements

For CD radio cassette-corder 120V AC, 60Hz (US, Canadian, Central & South America model) 230V AC, 50Hz (AEP, UK, Italian, East European, Russian, Singapore model) 110 – 120V, 220 – 240V AC selectable 50/60Hz (E, Saudi Arabia model) 9V DC, 6 size D (R20) 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. 425 x 160 x 246 mm (w/h/d)

(16 3/4 x 6 3/8 x 9 3/4 inches) (incl. projecting parts) Mass Approx. 4.0 kg (8 lb. 13 oz) (incl. batteries) Supplied accessories

AC power cord (1 )

Design and specifications are subject to change without notice.

TABLE OF CONTENTS

Specifications ........................................................................... 1

1. SERVICING NOTES .................................................... 3

2. GENERAL

Location and Function of Controls .................................... 4

3. DISASSEMBLY

3-1. Front Cabinet, Contorl Board Removal...................... 5

3-2. Power Board, AC Inlet Board,

BATT Board, VOL SEL Board Removal................... 5

3-3. Upper Cabinet Removal ............................................. 6

3-4. Optical pick-up Section, Mechanism Deck, Main Board, REC SW Board, CD Motor Board,

MONO/ST SW Board Removal ................................ 6

4. DIAL POINTER INSTALLATION ............................ 7

5. ADJUSTMENTS

5-1. Mechanical Adjustments ............................................ 8

5-2. Electrical Adjustments................................................ 8

6. DIAGRAMS

6-1. Explanation of IC Terminals......................................11

6-2. Block Diagrams ........................................................ 13

6-3. Printed Wiring Boards .............................................. 17

6-4. Schematic Diagram (Main Section) ......................... 21

6-5. Schematic Diagram (CD Section) ............................ 25

CAUTION

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

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the rear exterior.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! 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.

7. EXPLODED VIEWS

7-1. Front Cabinet Section ............................................... 32

7-2. Upper Cabinet Section.............................................. 33

7-3. Rear Cabinet Section ................................................ 34

7-4. Mechanism Deck Section (1) ................................... 35

7-5. Mechanism Deck Section (2) ................................... 36

7-6. Optical pick-up Section ............................................ 37

8. ELECTRICAL PARTS LIST ................................38

MODEL IDENTIFICATION

– Model Number Label –

MODEL NO.

CD RADIO CASSETTE-CORDER

US, Canadian, Central & South America model : AC120V ⁄60Hz AEP, UK, Italian, East European, Russian, Singapore model : AC230V ⁄50Hz E, Saudi Arabia model : AC110 – 120V , 220 – 240V

selectable. ⁄ 50/60Hz

CFD-V15 CFD-V24

– 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 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 0.5mA (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” indication is 0.75V, so analog meters must have an accurate low-voltage 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 2V AC range are suitable. (See Fig. A)

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

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe more than 30 cm away from the objective lens.

CHUCK PLATE JIG ON REPAIRING

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

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

To Exposed Metal Parts on Set

1.5k

0.15

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

Ω

Earth Ground

AC voltmeter (0.75V)

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

1. Press CD open knob.

2. Open the lid for CD.

3. Push on SWITCH (S801) as following figure.

4. Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto Power Control circuit or Optical Pick-up is broken. Objective lens moves up and down once for the focus search.

Insert a precision screw driver and push SWITCH (S801)

– 3 –

LOCATION AND FUNCTION OF CONTROLS

MAIN UNIT

SECTION 2

GENERAL

1 Tape operation buttons 2 CD operation buttons

≠ button ± button

PLAY MODE button DISPLAY/ENTER button

ﬂ button p button

3 OPEN / CLOSE button 4 Information display 5 MEGA BASS switch 6 2 Phones jack 7 VOL knob 8 TONE knob 9 OPR / BATT indicator !º FUNCTION switch !¡ TUNE knob !™ FM MODE switch

(AEP, UK, Italian, East European, Russian model)

7980

!¡

!™ 3

– 4 –

DISASSEMBLY

)

The equipment can be removed using the following procedure.

SECTION 3

Set

Front cabinet Rear cabinet

Control board

Power board, AC inlet board, BATT board, VOL SEL board Upper cabinet

Optical pick-up section

Mechanism deck

MONO/ST SW board

AEP, UK, Italian, East European, Russian model

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

3-1. FRONT CABINET, CONTROL BOARD REMOVAL

Knob, VOL

Front cabinet

Control board

E, Saudi Arabia model

Main board, CD motor board

REC SW board

Screws +BVTP (2.6X8)

Rear cabinet

Screws +BVTP (3X14)

3-2. POWER BOARD, AC INLET BOARD, BATT BOARD, VOL SEL BOARD REMOVAL

AC inlet board

Power board

Screws +BVTP (3X14

BATT board

Screws +BVTP (3X10)

VOL SEL board

Screws +BVTP (3X10)

E, Saudi Arabia model

– 5 –

Rear cabinet

3-3. UPPER CABINET REMOVAL

Screws

+BVTP (3X10)

Upper cabinet

STOP/EJECT

PUSH OPEN/CLOSE

Screws +BVTP (3X10)

Handle

Rear cabinet

3-4. OPTICAL PICK-UP SECTION, MECHANISM DECK, MAIN BOARD, REC SW BOARD, CD MOTOR BOARD, MONO/ST SW BOARD REMOVAL

Screws +BVTP (3X10)

Mechanism deck

Remove solder

CD motor boar

Screws +BVTP (3X10)

REC SW board

Main board

– 6 –

Optical pick-up section

Wire (Flat type) (16 core)

to MAIN board (CNP702)

CNP707 (6pin)

AEP, UK, Italian, East European, Russian model

!º

Screw +BVTP (3X8)

MONO/ST SW board

Rear cabinet

SECTION 4

DIAL POINTER INSTALLATION

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

1 Align the pointer with the groove of front cabinet and insert it as shown in the illustration. 2 Align knob (TU) with front cabinet and fasten the screw.

Front cabinet

Pointer

3 Turn the knob (TU) fully in the direction of the allow as shown in the illustration. 4Turn the tuning capacitor gear fully in the direction of the allow as shown in the illustration. 5 Fasten the front cabinet and rear cabinet with the screws.

Front cabinet

Knob (TU)

Screw +BVTP (2.6x8)

Knob (TU)

– 7 –

Tuning capacitor gear

Rear cabine

SECTION 5

ADJUSTMENTS

5-1. MECHANICAL ADJUSTMENTS

PRECAUTION

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

record/playback head pinch roller erase head rubber belts capstan

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

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

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

Torque Measurement

Torque T orque Meter Meter Reading

Forward CQ-102C Forward

Back Tension (0.020 – 0.076 oz•inch) Fast Forward CQ-201B

Rewind CQ-201B

CQ-102C

30 – 70 g•cm

(0.42 – 0.97 oz•inch)

1.5 – 5.5 g•cm

more than 60 g•cm

(more than 0.84 oz•inch)

more than 60 g•cm

(more than 0.84 oz•inch)

Adjustment V alue :

Speed checker Digital frequency counter

–1 to +1% 2,970 – 3,030Hz

Frequency difference between the beginning and the end of the tape should be within 1.5% (45Hz).

Adjustment Location :

T ape Tension Measurement

Torque Meter Meter Reading

CQ-403A

more than 100g

(more than 3.53 oz)

5-2. ELECTRICAL ADJUSTMENTS

TAPE RECORDER SECTION

Standard Output Level

Output terminal HP OUT

load impedance 32 Ω

output signal level 0.25V (–10dB)

Test T ape

Ty p e Signal Used for

WS-48A 3kHz, 0dB Tape Speed Adjustment

0dB = 0.775V

Tape Speed Adjustment

Procedure :

Mode : Playback

speed checker

LFM-30 or test tape WS-48A (3kHz, 0dB)

set

digital frequenc

counter

Ω

J301 (phones)

TUNER SECTION

AM Section

Function switch : AM Volume : MIN

AM RF signal generator

30% amplitude modulation by 400Hz signal. Output level : as low as possible

FM Section

Function switch : FM Volume : MIN

FM RF signal generator

22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible

set

Tape speed adjustment control inside motor

Put the lead-wire antenna close to the set.

0.01

level mete

Ω

J301 (phones)

telescopi antenna terminal

– 8 –

• Repeat the procedures in each adjustment several times, and the

IC 1

C15

C14

frequency counter

33k

Ω

1µF

frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

< >: AEP, UK, Singapore, Russian model only << >>: East European model only [ ]: Italian model only (( )) : Saudi Arabia model only

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T2 455kHz

VCO Adjustment

Procedure :

FM RF signal generator

Carrier frequency : 98MHz Modulation : No modulation Output level : 1.38mV (–55dB)

0.01

telescopi antenna terminal

set

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L4 520kHz [516kHz] ((516kHz))

CT4

Adjust for a maximum reading on level meter.

L3 620kHz

CT3 1,400kHz

Adjust for a maximum reading on level meter.

T1 10.7MHz

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

CT2

Adjust for a maximum reading on level meter.

CT1

1,780kHz <1,680kHz> <<1,680kHz>>

[1,630kHz] ((1,630kHz))

AM TRACKING ADJUSTMENT

FM IF ALIGNMENT

86.5MHz <87.0MHz> <<64.0MHz>>

[87.35MHz] ((87.35MHz))

109.5MHz <108.3MHz> [108.25MHz]

((107.8MHz))

FM TRACKING ADJUSTMENT

86.5MHz <87.0MHz> <<68.0MHz>>

[87.35MHz] ((87.35MHz))

109.5MHz <102MHz> [108.25MHz]

((107.8MHz))

1. Connect the frequency counter to 4 and 7 pin of IC 1 as shown the figure below.

2. Turn the set to 98MHz.

3. Adjust RV1 for 76kHz±500Hz reading frequency counter.

[ MAIN BOARD] (Conductor side)

Adjustment Location : Main board (See page 10)

How to put the set into CD Test Mode

1. Set the function switch to power off.

2. Set the function switch to CD while ≠ key and p key pressing. The set is into CD test mode (88 is displayed).

3. Turn the power off to release test mode.

– 9 –

Adjustment Location

[MAIN BOARD]

(Component side)

T1 : FM IF Alignment

L3 : AM Tracking Adjustment

L4 : AM Frequency Coverage Adjustmen

RV1 : VCO Adjustment

L1 : FM Tracking Adjustment

L2 : FM Frequency Coverage Adjustment

T2 : AM IF Alignment

[MAIN BOARD]

(Conductor side)

CT4 : AM Frequency Coverage Adjustment

CT2 : FM Frequency Coverage Adjustment

CT1 : FM Tracking Adjustment

CT3 : AM Tracking Adjustment

– 10 –

+ 23 hidden pages