Sony CFDV-37 Service manual
CFD-V37
SERVICE MANUAL
Ver 1.0 1999 . 04
E Model
Model Name Using
Similar Mechanism
Optical Pick-up Type KSM-213CDM
T ape Transport Mechanism T ype MF-V10-117
CD Section
Tape Section
CFD-V34
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 – 107 MHz(E4,EA)
87.6 – 108 MHz(E92)
AM : 530 – 1,605 MHz(E4,EA)
530 – 1,710 MHz(E92)
IF FM : 10.7MHz
AM : 455kHz
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 2.5 W + 2.5 W (at 3.2 Ω, 10 % harmonic
distortion)
Power requirements For CD radio cassette-corder :
110 – 120 V, 220 – 240 V AC
Selectable, 50/60 Hz(E4,EA)
120V 60 Hz(E92)
9V DC, 6 size D (R 20) batteries
For memory controller :
3V DC, 2 size AA (R 6) batteries
— Continued on next page —
MICROFILM
CD RADIO CASSETTE-CORDER
CFD-V37
5-5. SCHEMATIC DIAGRAM — TUNER/SYSTEM SECTION —
E4,EA MODEL:4.7p
E92 MODEL:3.3K
E92 MODEL
220
E92 MODEL
E92 MODEL
C1 47p
E4,EA MODEL
L3,CT1(3/4)
AM TRACKING
L1,CT1(1/4)
FM TRACKING
L2, CT1(2/4)
FM FREQUENCY
COVERAGE
27p
L4,CT1(4/4)
FM FREQUENCY
COVERAGE
• Refer to page 34 for IC Block Diagrams.
AM
• Wavef orm
SWITCH
Mark:
Ref.No.
C7
C8
C18,19
R5
E92 MODEL
E4 MODEL
5.6p 5.6p 6.8p
3.3p 1.5p 3.3p
0.01 0.015 0.01
330 470 330
EA MODEL
28
1
2
IC501 #¡
IC501 &¢
500kHz
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
470
28
• C : panel designation.
• U : B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and wa veforms are dc with respect to ground under no-signal (detuned) conditions.
no mark : CD PLAY
( ) : FM
[]: AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage v ariations ma y be noted due to normal production
32
tolerances.
• Waveforms are taken with a oscilloscope.
• Signal path.
F : FM
f : AM
• Abbreviation
E4 : 220V – 240V AC area
EA : Saudi Arabia
E92 : 120V AV area
4.0MHz
1.0V/div
0.1µsec/div
4.0Vp-p
1.0V/div
1.0µsec/div
4.5Vp-p
4
W or less unless otherwise
— 23 — — 24 — — 25 — — 26 —
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