Sony CFD-V27L (serv.man2) Service Manual ▷ View online
CFD-V27L
— 7 —
— 8 —
— 9 —
— 10 —
2-2. PRINTED WIRING BOARD
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Abbreviation
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Abbreviation
IT
: Italian model.
CET
: East European and Russian model.
EE
: East European
Ref. No.
Location
D1
D-3
D2
D-3
D3
G-7
D301
G-9
D302
D-10
D307
E-8
D308
D-8
D310
H-8
D311
D-10
D312
G-8
D314
H-7
D401
C-11
D402
D-11
D403
C-10
D404
C-10
D406
C-10
D407
C-10
D408
C-10
D409
C-11
D410
C-11
D411
C-11
D801
C-7
D901
E-20
D902
E-20
D903
F-20
D904
F-20
IC1
E-5
IC301
F-8
IC304
F-10
IC701
B-5
IC702
B-9
IC703
B-4
Q101
F-10
Q102
G-8
Q103
G-8
Q201
E-10
Q202
G-9
Q203
G-9
Q301
E-9
Q302
E-8
Q307
D-11
Q308
D-11
Q309
D-10
Q310
E-8
Q401
B-11
Q402
B-11
Q403
B-11
Q404
B-10
Q405
C-11
Q406
D-10
Q407
B-10
Q408
C-10
Q409
E-11
Q701
A-6
Q801
D-6
• Semiconductor
Location
1
2
A
B
C
D
E
F
G
H
I
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
16
1
2
ISS
CNP305
(
(
)
)
L3-2
(LW)
(LW)
L3-1
(MW)
(MW)
REC/PB
HEAD
(LOADING)
1-676-127
1-676-130
BRA
1-676-128
1
2
2
1
1
1 : EXCEPT EE MODEL
2 : EE MODEL
2 : EE MODEL
CFD-V27L
— 11 —
— 12 —
— 13 —
— 14 —
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
• Y : B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TAPE PLAY
(
no mark : TAPE PLAY
(
) : TAPE REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Signal path.
• Signal path.
F
: FM
E
: PB (TAPE)
a
: REC (TAPE)
J
: CD
• Abbreviation
IT
: Italian model.
CET
: East European and Russian model.
EE
: East European
2-3. SCHEMATIC DIAGRAM AUDIO SECTION
• Refer to page 24 for IC Block Diagrams.
• Waveform
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
line with mark 0 are critical for safety.
Replace only with part number specified.
1
2 REC MODE
30Vp-p
55.2kHz
10V/div
10
10
µ
sec/div
C313
CFD-V27L
— 15 —
— 16 —
— 17 —
— 18 —
2-4. SCHEMATIC DIAGRAM CD SECTION
• Refer to page 21 for IC Pin Function.
• Refer to page 25 for IC Block Diagrams.
• Waveforms
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
• Y : B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD
no mark : CD
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Signal path.
• Signal path.
J
: CD
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
line with mark 0 are critical for safety.
Replace only with part number specified.
2
IC701 qh RFO
3
IC702 yj XTAO
0.2V/div
0.5
0.5
µ
sec/div
2V/div
50
50
µ
sec/div
5 Vp-p
1.1 to 1.3 Vp-p
16.9 MHz
CFD-V27L
2-5. SCHEMATIC DIAGRAM TUNER SECTION
• Refer to page 24 for IC Block Diagrams.
— 19 —
— 20 —
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
Y
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW
[
] : SW
• Voltages are taken with a VOM (Input impedance 10
M
Ω
).
Voltage variations may be noted due to normal pro-
duction tolerances.
duction tolerances.
• Signal path.
F
: FM
• Abbreviation
IT
: Italian model.
CET
: East European and Russian model.
EE
: East European
Click on the first or last page to see other CFD-V27L (serv.man2) service manuals if exist.