Sony CFDV-34-L Service manual

CFD-V34L

SERVICE MANUAL

Ver 1.1 1998.08 With SUPPLIMENT-1 (9-923-378-81)

AEP Model

UK Model

E Model

Model Name Using Similar Mechanism Optical Pick-up Type KSM-213CDM/C2NP Tape Transport Mechanism Type MF-V10-117

CD Section Tape Section

NEW

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 Italy 87.5 – 108 MHz

Central and 65 – 108 MHz Eastern Europe Other countries 87.6 – 107 MHz

MW Italy 526.5 – 1606.5 kHz

Other countries 531 – 1,602 kHz

LW Italy 148.5 – 283.5 kHz

Other countries 153 – 279 kHz

IF FM : 10.7 MHz

AM/MW/LW : 455 kHz Aerials FM : Telescopic aerial

AM/MW/LW : 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 TYPE1 (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 – 64 Ω impedance headphones

Maximum Power output 2.5 W + 2.5 W Power requirements For CD radio cassette-corder :

230V AC, 50 Hz 9V DC, 6 R 20 (size D) batteries For memory controller : 3V DC, 2 R 6 (size AA) batteries

Power consumption AC 20W

— Continued on next page —

CD RADIO CASSETTE-CORDER

MICROFILM

Battery life For CD radio cassette-corder:

TABLE OF CONTENTS

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

FM recording

Sony R20P : approx. 13.5 h Sony alkaline LR20 : approx. 19 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. 6 h

Dimensions Approx. 425 × 160 × 246 mm (w/h/d)

(16 3/4 × 6 3/8 × 9 3/4 inches) (incl. projecting

parts) Mass Approx. 4.2 kg (9 lb. 4 oz) (incl. batteries) Supplied accessories AC power cord (1)

Remote controller (1) Design and specifications are subject to change without notice.

Optional accessories

Sony MDR headphones series

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

3. DISASSEMBL Y

3-1. Front Cabinet, Control (1) Board, Control (2) Board,

Headphones Board ····························································· 9 3-2. Upper Cabinet····································································· 9 3-3. Optical Pick-up ································································· 10 3-4. Mechanism Deck, Rec sw Board, Main Board,

Power Board, Primary Board, Batt Board ························ 10

4. ADJUSTMENTS

4-1. Mechanical Adjustment ···················································· 11 4-2. Electrical Adjustment ······················································· 11 4-3. Tuner Section····································································12 4-4. Reference ·········································································· 15

5. DIAGRAMS

5-1. Circuit Board Location ····················································· 17 5-2. IC Pin Function ································································ 18 5-3. Block Diagram ································································· 20 5-4. Printed Wiring Board ························································ 23 5-5. Schematic Diagram – Tuner/System Section – ················ 27 5-6. Schematic Diagram – Power Section – ···························· 31 5-7. Schematic Diagram – CD Section – ································· 35 5-8. IC Block Diagrams ··························································· 38

6. EXPLODED VIEWS

6-1. Front Cabinet Section ······················································· 39 6-2. Upper Cabinet Section······················································ 40 6-3. Rear Cabinet Section ························································ 41 6-4. Mechanism Deck Setion (1) (MF-V10-117) ···················· 42 6-5. Mechanism Deck Setion (2) (MF-V10-117) ···················· 43 6-6. Optical Pick-up Section (KSM-213CDM/C2NP) ············ 44

7. ELECTRICAL PARTS LIST······································· 45

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.

— 2 —

SECTION 1

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 PLA TE 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 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 —

Insert a precision screw driver and push SWITCH

LOCA TION OF CONTROLS

SECTION 2

GENERAL

This section is extracted from instruction manual.

54321

!ª

!• !¶ !§ !∞ !¢ !£ !™ !¡ !º 9 8

1 OPERATE button 2 Tape operating buttons 3 FUNCTION buttons 4 LOOP button 5 OPEN/CLOSE button 6 Remote sensor 7 OPR/BATT indicator 8 TUNING knob 9 Band select knob (FM – MW – LW) !º TONE (H) button

!¡ CD operating !™ TONE (L) button !£ 2 !¢ DISPLAY/ENTER button !∞ VOLUME – button !§ PLAY MODE button !¶ MEGA BASS button !• VOLUME + button !ª Information display

Remote commander (RMT-CV25AD)

!º

9 8



1 POWER (AC ONLY) button 2 Number buttons 3 VOL +/– buttons 4 CD operation buttons 5 CD button 6 TAPE button 7 LOOP button 8 TONE H/L buttons 9 MODE button !º MEGA BASS button

— 4 —

— 5 —

— 6 —

— 7 —

— 8 —

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

SET FRONT CABINET CONTROL (1) BOARD

TUNING KNOB UPPER CABINET

PRIMARY BOARD

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

3-1. FRONT CABINET, CONTROL (1) BOARD, CONTROL (2) BOARD, HEADSPHONES BOARD

CONTROL (2) BOARD HEADPHONES BOARD

OPTICAL PICK-UP SECTION

MECHANISM DECK

Front cabinet

CONTROL (1) board

Screws +BVTP 2.6 × 8

REC SW BOARD

!™

Headphones board

!¡

Screw +BVTP 2.6 × 8

MAIN BOARD POWER BOAR

BATT BOARD

Rear cabinet

TUNING KNOB

Screws

+BVTP 2.6 × 8

3-2. UPPER CABINET

Cabinet (upper) assy

!º

CONTROL (2)

board

STOP/EJECT

Screws

+BVTP 2.6 × 8

Screw

+BVTP 3

Screws

+BVTP 3 × 1

Screws +BVTP 3 × 14

Screws

+BVTP 3 × 10

Screws

+BVTP 3 × 12

Handle

Tape operation button

— 9 —

Rear cabinet

3-3. OPTICAL PICK-UP

Remove solder

CD Motor board

Optical pick-up section

Wire (Flat type) (16 core)

to MAIN board (CNP701)

CNP702 (6pin)

3-4. MECHANISM DECK, REC SW BOARD, MAIN BOARD, POWER BOARD, PRIMARY BOARD,

BA TT BOARD

PRIMARY board

!™

Screws

+BVTP 3 × 10

Screws +BVTP 3 × 10

REC SW board

!£

Mechanism deck

MAIN board

Screws +BVTP 3 × 1

!º

!¡

BATT board

Rear cabinet

Screws +BVTP 3 × 10

CNP301 (4pin)

Chassis (PWB)

POWER board

Screws +BVTP 3 × 10

— 10 —

SECTION 4

ADJUSTMENTS

4-1. 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.

T orque Measurement

Mode

FWD

FWD back tension

Fast Forward

Rewind

T ape T ension Measurement

Torque Meter

CQ-102C

CQ-201B

Meter Reading

60g•cm

(0.42 – 0. 83 oz•inch)

1 – 5g•cm

(0.014 – 0.07 oz•inch)

more than 55g•cm

(more than 0.77 oz•inch)

more than 55g•cm

(more than 0.77 oz•inch)

4-2. ELECTRICAL ADJUSTMENT

T APE RECODER SECTION

Standard output level

Output Pin

Load impedance Output signal level

Test tape

Test Tape

WS-48A

P-4-A063

Tape Speed Adjustment

Procedure :

Mode : Playback

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

Signal

3kHz, 0dB

6.3kHz, –10dB

set

0.25 V (–10dB)

Tape speed adjustment Head azimuth adjustment.

0dB = 0.775V

HP OUT

32 Ω

Used for

digital frequency counter

Ω

+ –

Torque Meter

CQ-403A

Meter Reading

more than 80g

(more than 2.83 oz)

J302 (phones)

Adjustment V alue : normal tape speed

Speed checker

–2.0 to 2.0%

Frequency difference between the beginning and the end of the tape should be within 2% (60Hz).

Adjustment Location :

Tape speed adjustment control inside motor

Digital frequency counter

2,940 – 3,060Hz

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