Sony CFD-V17 Service Manual

CFD-V17

SERVICE MANUAL

Ver 1.0 1999 . 01

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 3.2 Ω loads, both channels driven from 150 – 10,000 Hz; rated 1.8 W per channel-minimum 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

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

US Model

Canadian Model

Model Name Using • Similar Mechanism CFD-V15/V24 Optical Pick-up Type KSM-213CDM T ape Transport Mechanism T ype MF-V10-117

Power output (excluding US model)

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 1/8 inches) (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.

General

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

For 16 – 68 Ω impedance headphones

MICROFILM

CD RADIO CASSETTE-CORDER

TABLE OF CONTENTS

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

SAFETY CHECK-OUT

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. Electrical Adjustment ······················································· 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 W ir ing 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

After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for A C leakage. Check leakage as described below.

LEAKAGE

The AC leaka ge 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 microamperes). 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 v oltmeter . The “limit” indication is 0.75 V, so analog meters must have an accurate low-volta ge scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A)

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

T o Exposed Metal

Parts on Set

0.15

Fig. A. Using an A C v oltmeter to check A C leakage.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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.

1.5 k

Ω

Earth Ground

Voltmeter (0.75 V)

— 2 —

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

SECTION 1

Insert a precision screw driver and push SWITCH(S801)

SERVICE NOTES

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.

The following caution label is located inside the unit.

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.

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

CAUTION

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

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 Po wer Control circuit or Optical Pick-up is broken. Objective lens moves up and down once for the focus search.

— 3 —

LOCATION AND FUNCTION OF CONTROLS MAIN UNIT

SECTION 2

GENERAL

@¡ @º !ª

!•

1 Tape operation buttons

r button

· button 0 button ) button p, 6 button P button

2 CASSETE LID 3 FM rod antenna 4 DISPLAY ENTER button 5 CD ^ button 6 CD 6 PUSH OPEN/CLOSE button 7 CD + button 8 CD p button

!™!£!¢!∞!§!¶

!¡

9 Battery compartment !º TUNE knob !¡ CD = button !™ DIAL !£ FUNCTION switch !¢ OPR/BATT indicator !∞ TONE knob !§ 2 Phones jack !¶ MEGA BASS knob !• AC IN Socket !ª VOLUME knob @º PLAY MODE button @¡ Information display

— 4 —

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

Front cabinet assySet

Cabinet (upper) assy

Control board

Inlet, power, battery, half battery board

Main board Mechanism deck, optical pick-up section

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

3-1. FRONT CABINET ASSY

Tone knob

Vol knob

Front cabinet assy

+BVTP 3

Screw

Remove the Handle

in the direction of the arrow.

Rear cabinet assy

Screw

+BVTP 3

Open the CD lid in

the direction of the arrow.

Four screws

+BVTP 3

T wo screws

+BVTP 3

Lid battery case

— 5 —

3-2. CONTROL BOARD

3-3. CABINET (UPPER) ASSY

Three screws

+BVTP 3

CD button

T u knob

Front cabinet

2.6

Screw

T wo screws

+BVTP 2.6

CONTROL boar

Four screws

2.6

Three screws

+BVTP 3

Open the cassette holder assy by

pressing STOP/EJECT button.

STOP/EJECT

button

Cabinet (upper) assy

Open the CD lid in

the direction of the arrow.

Screw

+BVTP 3

Open the Handle in

the direction of the arrow.

Connector

Rear cabinet

— 6 —

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

Connector

Four screws

+BVTP 3 × 10

POWER board

T wo screws

+BVTP 3 × 10

INLET board

BATTERY board

T wo screws

+BVTP 3 × 8

Rear cabinet

T wo connectors

HALF BATTERY

board

3-5. MAIN BOARD

!¡

Connector

Four screws

+BVTP 3 × 10

Connector

!™

MAIN board

Flexible

Connector

Flexible

DISPLAY

board

Three Screws

+BVTP 3 × 10

— 7 —

VOLUME board

Connecto

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

CD MOTOR board

T wo screws

Optical pick-up section

Remove solder

T wo screws

+BVTP 3

Three screws

Mechanism deck

+BVTP 3

RECORD

switch board

T wo screws

— 8 —

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 Tuning knob with front cabinet and fasten the screw.

Front Cabinet

Pointer

Tuning knob B

Screw (2.6 × 8)

3 Turn 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).

4 Turn the tuning capacitor gear fully in the direction of the arrow as shown in the illustration. 5 Fasten the front cabinet and rear cabinet with the screws.

T uning knob

— 9 —

Tuning capacitor gear

Rear cabine

SECTION 5

ADJUSTMENTS

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

Mode

FWD

FWD back tension

Fast Forward

Rewind

T ape Tension Measurement

Torque Meter

CQ-102C

CQ-201B

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)

5-2. ELECTRICAL ADJUSTMENT

TAPE RECODER SECTION

Standard output level

Output

Load impedance Output signal level

Test tape

T est Tape

WS-48A

P-4-A063

Tape Speed Adjustment

Procedure :

Mode : Playback

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

Signal

3 kHz, 0 dB

6.3 kHz, –10 dB

set

0.25 V (–10 dB)

Tape speed adjustment Head azimuth adjustment.

Ω

0dB = 0.775V

HP OUT

32 Ω

Used for

digital frequency counter

+ –

Torque Meter

CQ-403A

Meter Reading

more than 60 g

(more than 2.12 oz)

J301 (phones)

Adjustment V alue : normal tape speed Adjust the tape speed adjustment control inside motor, so that the frequency counter reading becomes 3,000 Hz.

Specification Value :

Digital frequency counter

2,910 – 3,090Hz

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

Adjustment Location :

— 10 —

Tape speed adjustment control inside motor

5-3. TUNER SECTION

• Switch Location

VOLUME : MAX MEGA BASS : OFF PRESET SOUND MODE : OFF

AM SECTION

BAND : AM Signal generator

AM RF signal generator

Put the lead-wire antenna close to the set.

0 dB = 1 µV

• Repeat the procedures in each adjustment several times for the maximum level meter indication.

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

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T2 455 kHz

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 620 kHz

CT3 1,400 kHz

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

FM SECTION

BAND : FM Signal generator

FM RF signal generator

75kHz (100%) amplitude modulation by 1kHz signal. Output level : as low as possible

set

0.01µF

Ω

telescopic antenna terminal

level mete

+ –

AM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L4 520 kHz

CT4 1,780 kHz

FM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1 10.7 MHz

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 86.5 MHz

CT1 109.5 MHz

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

L2 86.5 MHz

CT2 109.5 MHz

Adjustment Location : Main board (See page 13)

J301 (phones)

— 11 —

FM VCO Adjustment

color mark

CF1

Procedure :

FM RF SSG

0.01µF to ANT IN termina

Carrier frequency : 98MHz IF frequency : According to the color of CF1. Modulation : no modulation Output level : 0.1V (100dB)

1. Connect frequency counter to the positions shown below.

2. Tune the set to 98MHz.

3. Adjust RV1 so that the frequency counter reading becomes 75,000 Hz.

Specification Value :

Frequency counter

75,950 – 76,050 Hz

Frequency counte

IC1 Pin

0.01µF

33k

Ω

+ –

RED 10.70MHz BLUE 10.67MHz ORANGE 10.73MHz BLACK 10.64MHz WHITE 10.76MHz

Adjustment Location : MAIN board (See page 13)

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