Sony CFDV-35 Service manual
CFD-V25/V35
MICROFILM
SERVICE MANUAL
Photo: CFD-V35
US Model
Canadian Model
CFD-V25/V35
E Model
CFD-V25
Model Name Using
Similar Mechanism
Optical Pick-up Type KSM-213CDM/C2NP
T ape Transport Mechanism Type MF-V10-117
CD Section
Tape Section
NEW
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 3.2 Ω 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.
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 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 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
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
For memory controller :
3V DC, 2 size AA (R 6) batteries
Power consumption AC 20W
— Continued on next page —
CD RADIO CASSETTE-CORDER
TABLE OF CONTENTS
1. SERVICE NOTES····························································3
SAFETY CHECK-OUT
2. GENERAL ··········································································4
3. DISASSEMBLY
3-1. Front Cabinet, Control (1) Board, Control (2) Board,
Headphone 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
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 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 0.5 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. F ollow the man ufacturers’ 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 batter y-operated A C voltmeter . The “limit” indication
is 0.75 V, so analog meters must have an accura te low-voltage
scale. The Simpson 250 and Sanwa SH-63T rd 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)
T o Exposed Metal
Parts on Set
7. ELECTRICAL PARTS LIST······································· 45
Battery life For CD radio cassette-corder:
FM recording
Sony R20P : approx. 13.5 h
Sony alkaline LR20 : approx. 19 h
Tape playbac k
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
AC
0.15
µ
F
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMATIQUES 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.
1.5 k
Ω
Earth Ground
À LA SÉCURITÉ!
Voltmeter
(0.75 V)
— 2 —
SECTION 1
Insert a precision screw driver
and push SWITCH
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 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.
— 3 —
LOCATION OF CONTROLS
SECTION 2
GENERAL
This section is extracted
from instruction manual.
54321
!ª
!• !¶ !§ !∞ !¢ !£ !™ !¡ !º 9 8
1 POWER 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 PRESET SOUND MODE buttons (V35 only)
!º TONE (H) button (V25 only)
6
7
!¡ CD operating
!™ TONE (L) button (V25 only)
!£ 2
!¢ DISPLAY/ENTER button
!∞ VOLUME – button
!§ PLAY MODE button
!¶ MEGA BASS button
!• VOLUME + button
!ª Information display
Remote commander (RMT-CV25A) (V25)
(RMT-CV35A) (V35)
!™
!¡
!º
9
8
7
1
2
3
4
56
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 BAND select buttons
9 TONE H/L buttons (CV25A)
!º MODE button
!¡ MEGA BASS button
!™ SOUND button (CV35A)
— 4 —
— 5 —
— 6 —
— 7 —
— 8 —
SECTION 3
D
4
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
Front cabinet
CONTROL (2) BOARD HEADPHONES BOARD
OPTICAL PICK-UP SECTION
MECHANISM DECK
6
CONTROL (1) board
5
Screws +BVTP 2.6 × 8
!™
REC SW BOARD
Headphones board
!¡
Screw +BVTP 2.6 × 8
1
MAIN BOARD POWER BOAR
2
Rear cabinet
BATT BOARD
8
TUNING KNOB
7
Screws
+BVTP 2.6 × 8
3-2. UPPER CABINET
Cabinet (upper) assy
4
!º
CONTROL (2)
board
2
STOP/EJECT
9
Screws
+BVTP 2.6 × 8
4
Screws
+BVTP 3 × 12
3
3
Screws +BVTP 3 × 14
1
Screws
+BVTP 3 × 12
3
+BVTP 3 × 1
Handle
Screws
Tape operation button
7
5
— 9 —
6
Rear cabinet
3-3. OPTICAL PICK-UP
0
4
Remove solder
5
CD Motor
board
Optical pick-up section
3
Wire (Flat type) (16 core)
to MAIN board (CNP701)
1
2
CNP702 (6pin)
3-4. MECHANISM DECK, REC SW BOARD, MAIN BOARD, POWER BOARD, PRIMARY BOARD,
BATT BOARD
PRIMARY board
!™
Screws
+BVTP 3 × 10
3
Screws +BVTP 3 × 10
REC SW board
!£
Mechanism deck
2
4
MAIN board
1
Screws +BVTP 3 × 1
!º
!¡
BATT board
Rear cabinet
6
Screws +BVTP 3 × 10
5
CNP301 (4pin)
7
9
POWER board
8
Screws +BVTP 3 × 10
— 10 —
SECTION 4
Tape speed adjustment
control inside motor
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.
Torque Measurement
Mode
FWD
FWD
back tension
Fast Forward
Rewind
Tape 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
TAPE 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.
32
1dB = 0.775V
HP OUT
32 Ω
Used for
speed checker
LFM-30 or
digital frequency
counter
Ω
+
–
Torque Meter
CQ-403A
Meter Reading
more than 80g
(more than 2.83 oz)
J302 (phones)
Adjustment Value : 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 :
Digital frequency counter
2,940 – 3,060Hz
— 11 —
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