Sony CFD-V27 Manuale utente

CFD-V27

E Model

SERVICE MANUAL

CD RADIO CASSETTE-CORDER

MICROFILM

SPECIFICATIONS

Model Name Using Similar Mechanism CFD-V17

CD CD Mechanism Type KSM-213CDM

Section Optical Pick-up Name KSS-213CDM

Tape deck Model Name Using Similar Mechanism CFD-V17

Section Tape Transport Mechanism Type MF-V10-117

CD player section

System Compact disc digital audio system

Laser diode properties Material: GaAlAs

Wavelength: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 2

Frequency response 20 – 20,000 Hz + 1/-2 dB

Wow and flutter Below measurable limit

Radio section

Frequency range FM : 87.6 – 108 MHz

AM : 530 –1,710 kHz

Aerials FM : Telescopic antenna

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 – 10,000 Hz

General

Speakers Full range : 10 cm dia., 3.2 Ω, cone type (2)

Outputs Headphones jack (stereo minijack)

For 16 – 68 Ωimpedance headphones

Power output 2.3 W + 2.3 W (at 3.2 Ω, 10 % harmonic

distortion)

Power requirements For CD radio cassette-corder :

120V AC, 60 Hz

9V DC, 6 size D (R 20) batteries

Power consumption AC 20W

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. 420 ×165 ×256 mm (w/h/d)

(16 5/8×6 1/2×10 1/8inches) (incl. projecting

parts)

Mass Approx. 4.1 kg (9 lb. 1 oz) (incl. batteries)

Supplied accessories AC power cord (1)

Design and specifications are subject to change without notice.

Ver 1.1 2000. 08

With SUPPLEMENT-1 (9-926-997-81)

— 2 —

TABLE OF CONTENTS

1. SERVICE NOTES ···························································· 3

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

3. DISASSEMBLY

3-1. Front Cabinet Assy ····························································· 5

3-2. Control Board ····································································· 6

3-3. Cabinet (upper) Assy ·························································· 6

3-4. Inlet, Power, Battery, Half Battery Board··························· 7

3-5. Main Board········································································· 7

3-6. Mechanism Deck, Optical Pick-up Section························ 8

4. DIAL POINTER INSTALLATION ······························· 9

5. ADJUSTMENT

5-1. Mechanical Adjustment ···················································· 10

5-2. ElectricalAdjustment ······················································· 10

5-3. Tuner Section···································································· 11

5-4. Reference·········································································· 15

6. DIAGRAM

6-1. Circuit Board Location ····················································· 17

6-2. Block Diagram ································································· 18

6-3. Printed Wiring Board························································ 21

6-4. Schematic Diagram – Main Section(1/2) – ······················ 25

6-5. Schematic Diagram – Main Section(2/2) – ······················ 30

6-6. Explanation of IC Terminals ············································ 33

7. EXPLODED VIEWS ·················································38

8. ELECTRICAL PARTS LIST ···································44

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH

MARK !ON THE SCHEMATIC DIAGRAMS AND INTHE 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.

— 3 —

SECTION 1

SERVICE NOTES

NOTES ON HANDLINGTHE 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 from 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

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.

This appliance is classified as a CLASS 1 LASER product. The

CLASS 1 LASER PRODUCT MARKING is located on the rear

exterior.

The following caution label is located inside the unit.

Laser component in this product is capable

of emitting radiation exceeding the limit for

Class 1.

CAUTION

Use of controls or adjustments or performance of procedures

otherthan those specified hereinmayresult in hazardousradiation

exposure.

Insert a precision screw driver

and push SWITCH(S801)

— 4 —

SECTION 2

GENERAL

LOCATION AND FUNCTION OF CONTROLS

MAIN UNIT

1Tape operation buttons

rbutton

·button

0button

)button

p, 6button

Pbutton

2CASSETE LID

3FM rod antenna

4DISPLAY ENTER button

5CD ^button

6CD 6PUSH OPEN/CLOSE button

7CD +button

8CD pbutton

9Battery compartment

!º TUNE knob

!¡ CD =button

!™ DIAL

!£ FUNCTION switch

!¢ OPR/BATT indicator

!∞ TONE knob

!§ 2Phones jack

!¶ MEGA BASS knob

!• AC IN Socket

!ª VOLUME knob

@º PLAY MODE button

@¡ Information display

123456 7

!¡

!™!£!¢!∞!§!¶

!•

!ª

@º

@¡

— 5 —

SECTION 3

DISASSEMBLY

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

•The equipment can be removed using the following procedure.

3-1. FRONT CABINET ASSY

Main board Mechanism deck, optical pick-up section

Control board

Cabinet (upper) assy

Front cabinet assySet Inlet, power, battery, half battery board

Front cabinet assy

Rear cabinet assy

Lid, battery case

Four screws

+BVTP 3

Open the Lid (CD) in

the direction of the arrow.

Two screws

+BVTP 3

Screw

+BVTP 3

Screw

+BVTP 3

Remove the Handle

in the direction of the arrow.

Knob (Vol )

Knob (Tone)

— 6 —

3-3. CABINET (UPPER) ASSY

3-2. CONTROL BOARD

Three screws

+BVTP 3

Three screws

+BVTP 3

Screw

+BVTP 3

Open the Handle in

the direction of the arrow.

Open the Holder assy, cassette by

pressing STOP/EJECT button.

Open the Lid (CD) in

the direction of the arrow.

Rear cabinet

STOP/EJECT

button

Connector

Cabinet (upper) assy

Cabinet (Front) sub assy

CONTROL boar

Two screws

+BVTP 2.6

Four screws

2.6

Screw

2.6

Knob (TU)

Button (CD)

— 7 —

3-4. INLET, POWER, BATTERY, HALF BATTERY BOARD

3-5. MAIN BOARD

Four screws

+BVTP 3

!™

MAIN board

Connector

!¡

Connector

Connecto

VOLUME board

DISPLAY

board

Flexible

Three Screws

+BVTP 3

Two screws

+BVTP 3

Four screws

+BVTP 3

INLET board

POWER board

Transformer, power

Rear cabinet

BATTERY board

HALF BATTERY

board

Two screws

+BVTP 3

Two screws

+BVTP 3

Two connectors

Connector

Cover

— 8 —

3-6. MECHANISM DECK, OPTICAL PICK-UP SECTION

Optical pick-up section

Mechanism dec

Three screws

+BVTP 3

Two screws

Remove solder

CD MOTOR board

Two screws

+BVTP 3

RECORD

switch board

— 9 —

SECTION 4

DIAL POINTER INSTALLATION

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

1Align the pointer with the groove of front cabinet and insert it as shown in the illustration.

2Align Tuning knob with front cabinet and fasten the screw.

3Turn the Tuning knob in the direction of the arrow as shown in the illustration until pointer agrees with scale “ 0 ” (at leftmost end of

scale).

4Turn the tuning capacitor gear fully in the direction of the arrow as shown in the illustration.

5Fasten the front cabinet and rear cabinet with the screws.

Pointer

Tuning knob B

Front Cabinet

Screw (2.6

Tuning knob

Tuning capacitor gear

Rear cabine

— 10 —

SECTION 5

ADJUSTMENTS

Torque Meter

CQ-403A

Meter Reading

more than 60 g

(more than 2.12 oz)

5-2. ELECTRICAL ADJUSTMENT

Standard output level

Test tape

Tape Speed Adjustment

Procedure :

Mode : Playback

Adjustment Value : normal tape speed

Adjust the tape speed adjustment control inside motor, so that the

frequency counter reading becomes 3,000 Hz.

Specification Value :

Frequency difference between the beginning and the end of the

tape should be within 1.5% (45 Hz).

Adjustment Location :

HP OUT

32 Ω

0.25 V (–10 dB)

Output

Load impedance

Output signal level

TestTape

WS-48A

P-4-A063

Used for

Tape speed adjustment

Head azimuth adjustment.

Signal

3 kHz, 0 dB

6.3 kHz, –10 dB

5-1. MECHANICAL ADJUSTMENT

PRECAUTION

1. Clean the following parts with a denatured-alchool-moistened

swab: record/playback head pinch roller

erase head rubber belts

capstans

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.

Torque Measurement

TapeTension Measurement

Meter Reading

18 – 60 g•cm

(0.25 – 0.83 oz•inch)

1.0 – 5.0 g•cm

(0.014 – 0.069 oz•inch)

45 – 95 g•cm

(0.62 – 1.32 oz•inch)

45 – 95 g•cm

(0.62 – 1.32 oz•inch)

Mode

FWD

back tension

Fast Forward

Rewind

Torque Meter

CQ-102C

CQ-201B

0dB = 0.775V

TAPE RECODER SECTION

Tape speed adjustment

control inside motor

Ω

test tape

WS-48A

(3kHz, 0dB)

set

digital frequency

counter

J301 (phones)

–

Digital frequency counter

2,910 – 3,090Hz

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