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CFD-V25/V35
US Model
Canadian Model
CFD-V25/V35
E Model
CFD-V25
SERVICE MANUAL
CD RADIO CASSETTE-CORDER
MICROFILM
-- Continued on next page --
SPECIFICATIONS
Optical Pick-up Type
KSM-213CDM/C2NP
Tape Transport Mechanism Type
MF-V10-117
Model Name Using
Similar Mechanism
CD Section
Tape Section
NEW
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 3.2
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
TYPE I (normal) : 70 ­ 10,000 Hz
General
Speakers
Full range : 10 cm dia., 3.2
, cone type
(2)
Outputs
Headphones jack (stereo minijack)
For 16 ­ 64
impedance headphones
Power output (excluding US model)
2.3 W + 2.3 W (at 3.2
, 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
Photo: CFD-V35


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Battery life
For CD radio cassette-corder:
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
TABLE OF CONTENTS
1. SERVICE NOTES ···························································· 3
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
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
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.
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 AC 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. 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 0.75 V, 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)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µF
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.


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SECTION 1
SERVICE NOTES
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 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 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
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
other than those specified herein may result in hazardous radiation
exposure.


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SECTION 2
GENERAL
This section is extracted
from instruction manual.
!· !¶
!§ ! !¢
!TM !¡ !º
9
8
7
6
5
4
3
2
1
LOCATION OF CONTROLS
1
2
3
4
5
6
7
8
9
!TM
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)
TONE (H) button (V25 only)
CD operating
!TM
TONE (L) button (V25 only)
2
DISPLAY/ENTER button
!
VOLUME ­ button
PLAY MODE button
MEGA BASS button
VOLUME + button
Information display
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)
MODE button
MEGA BASS button
!TM
SOUND button (CV35A)
Remote commander
(RMT-CV25A) (V25)
(RMT-CV35A) (V35)


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