Sony CFD-V37 User manual

CFD-V37
E Model SERVICE MANUAL
CD RADIO CASSETTE-CORDER
MICROFILM
— Continued on next page —
SPECIFICATIONS
Optical Pick-up Type KSM-213CDM
Tape Transport Mechanism Type MF-V10-117
Model Name Using
Similar Mechanism CD Section
Tape Section CFD-V34
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 Ωimpedance 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 VAC
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
Ver 1.0 1999 . 04

CFD-V37
5-5. SCHEMATIC DIAGRAM — TUNER/SYSTEM SECTION —
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 Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•U: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : CD PLAY
( ) : FM
[]:AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
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
•Waveform
1 IC501 #¡
2 IC501 &¢
4.0Vp-p
4.5Vp-p
4.0MHz
500kHz
1.0V/div
0.1µsec/div
1.0V/div
1.0µsec/div
E92 MODEL
L2, CT1(2/4)
L1,CT1(1/4) FM FREQUENCY
COVERAGE
L4,CT1(4/4)
E4,EA MODEL:4.7p
E92 MODEL:3.3K
FM FREQUENCY
COVERAGE
27p
FM TRACKING
220
C1 47p
E92 MODEL
E4,EA MODEL
E92 MODEL
470
L3,CT1(3/4)
AM TRACKING
AM
Mark:
Ref.No. E4 MODEL E92 MODEL EA MODEL
C7
C8
C18,19
R5
5.6p 5.6p 6.8p
3.3p 1.5p 3.3p
0.01 0.015 0.01
330 470 330
SWITCH
28
28
32
— 23 — — 24 — — 25 — — 26 —
• Refer to page 34 for IC Block Diagrams.

CFD-V37
5-6. SCHEMATIC DIAGRAM — POWER SECTION —
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 Ωand 1/4W or less unless otherwise
specified.
•U: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : CD PLAY
( ) : TAPE PLAY
[ ] : TAPE REC
• Voltages are taken with aVOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Signal path.
F: FM
E: PB
a: REC
J: CD
•Waveform
3 T301 REC
40Vp-p
52.75kHz
10V/div
10µsec/div
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.
32 23
23
E4,EA MODEL E4,EA MODEL
E4,EA MODEL
E92 MODEL
E92 MODEL F902
2.5A:E4,EA MODEL
3.15A:E92 MODEL
250V
POWER TRANSFORMER
— 27 — — 28 — — 29 — — 30 —

CFD-V37
5-7. SCHEMATIC DIAGRAM — CD SECTION — 5-8. IC BLOCK DIAGRAMS
–
+
+
–
–
+
12 3 45 6 7 8 9 10
20
19
17
16
15
14
131211
21
22
23
24
25
26
27282930313233343536373839
40
41
42
43
44
45
46
52
51
50
49
48
47
+
–
+
–
+
–
+
–
–
+
–
+
–
+
+
–
+
–
+
–
+
–
–
+
+
–
–
+
–
+
+
–
+
–
+
–
+
–
+
–
+
––
+
–
+
–
+–
+
+
–
+
–
–
+
+
–
–
+
–
+
+
–
18
–
+
–
+
–
+
+
–
+
–
–
+
Charge
up
FEO
FEI
FDFCT
FGD
FLB
FE_O
FE_M
SRCH
TGU
TG2
FSET
TA_M
TA_O
SL_P
SL_M
SL_O
ISET
VCC
VCC
LOCK
CLK
XLT
DATA
XRST
C. OUT
SENS1
SENS2
FOK CC2 CC1 CB CP RF_I RF_O RF_M RFTC LD PD PD1 PD2
FE_BIAS
F
E
EI
VEE
TEO
LPFI
TEI
ATSC
TZC
VC
FZC
TM2
VEEVEE
TM3 TM5
TM4 TM6
VCC VCC
TM7
ISET
TTL
↓
IIL
IIL
↓
TTL
IIL
↓
TTL
IIL DATA REGISTER
INPUT SHIFT REGISTER
ADDRESS DECODER
SENS SELECTOR
OUTPUT DECODER
DFCTO IFB1-6
BAL1-4
TOG1-4
FS1-4 TG1-2 TM1-7 PS1-4
FOH
FOL
TGH
TGL
BALH
BALL
ATSC
TZC
FZC
FSET
TG2
VEE
VCC
FS1
FS2
FOCUS
PHASE COMPENSATION
DFCT
FS4
TRACKING
PHASE COMPENSATION
TG1
TM1
DFCT
FZC COMP.
VEE
VCC
VCC
TDFCT
TZC COMP.
ATSC
WINDOW
COMP.
E-F BALANCE
WINDOW COMP.
TRK. GAIN
WINDOW COMP.
FO. BIAS
WINDOW
COMP.
VEE
TGFL
TOG1
TOG2
TOG3
TOG4
BAL1
BAL2
BAL3
BAL4
IFB1
IFB2 IFB3
IFB4 IFB5
IFB6
FE AMP
VEE
E IV AMP
F IV AMP
VCC
APC
VCC
VEE
LASER POWER CONTROL
VEE
PD1 IV
AMP
PD2 IV
AMP
RF SUMMING
AMP
VCC
VEE
VEE
LEVEL S VEE
MIRR
VCC
DFCT
FOK
VCC
LDON LPCL LPC TGFL MIRR DFCT1 CC1
30 29
4 5 6 7 8 9 10 11 12 13 14 15321
28 27 26 25 24 23 22 21 20 19 18 17 16
REG
FM FRONT-END
AM FRONT-END
VCO MPX REG.
1/2
COUNTER
1/2
COUNTER
PD1
PD2
MUTING
DECODER AMP
MONO/ST
SELECT
RIPPLE
FILTER
AUTOBLEND
BAND PASS
MUTE
TUNING
INDICATOR
FM IF/
DISCRI
AM
IF/DET
GND PLL LPF2 MPX REG VCO FM DISCRI MUTE AM OSC AFC FM OSC REG FM RF AM RF IN FM RF IN
BAND SELECT
AM IF IN
FM IF IN
TUNE IND
GND
VCC
L CH OUT
R CH OUT
ST IND/
VCO CHECK
PILOT DET LPF2 PILOT DET LPF2
PLL LPF1
AGC AFC2 AGC AFC1
RIPPLE
FILTER
FM GND FM/AM FE OUT
IC1 CXA12138S
IC701 CXA1992BR
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 Ωand 1/4W or less unless otherwise
specified.
•U: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
J: CD
•Waveform
4 IC703 &¡
5 IC703 #∞
3.5Vp-p
1.2 ±0.2Vp-p
16.9344MHz
1.0V/div
50nsec/div
0.2V/div
0.5µsec/div
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.
PD
LD
28 24
— 31 — — 32 — — 33 — — 34 —
• Refer to page 34 for IC Block Diagrams.