Sony CFD-V77S Service Manual ▷ View online
CFD-V77S
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
— 17 —
— 18 —
— 19 —
— 20 —
6-2. BLOCK DIAGRAM
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
• b
: Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• 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.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
H
: adjustment for repair.
•
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
under no-signal (detuned) conditions.
– For MAIN BOARD (1/3) –
no mark : PLAY (TAPE SECTION)
CD STOP
(
) : REC (TAPE SECTION)
– For MAIN BOARD (2/3) –
no mark : CD PLAY
TAPE STOP
– For MAIN BOARD (3/3) –
no mark : FM
(
(
) : MW
[
] : SW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
E
: PB
a
: REC
J
: CD
• Abbreviation
EA
: Saudi Arabia model
SP
: Singapore model
CEF
: Italian model
CET
: East European and Russian models
BATTERY board
CONNECTOR board
HALF BATTERY board
CD MOTOR board
MAIN board
VOLTAGE
SELECTION
board
FINE TUNING
board
POWER board
VOLUME board
CONTROL board
RECORD SWITCH board
LCD board
MONO ST board
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
VOLTAGE
SELECTION
BOARD
E,EA,SP MODELS
AEP, CEF, CET MODELS
CNB907
3
MONO ST
BOARD
BOARD
AEP, CEF, CET MODEL
CFD-V77S
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
— 21 —
— 22 —
— 23 —
— 24 —
6-3. PRINTED WIRING BOARD
• Refer to page 20 for Note on Printed Wiring Board. • Refer to page 17 for Circuit Boards Location.
Ref. No.
Location
D1
C-3
D2
C-3
D3
E-4
D4
E-4
D301
G-9
D302
D-9
D307
E-8
D308
D-8
D310
H-9
D311
C-10
D312
G-8
D314
H-8
D401
C-11
D402
C-11
D403
B-10
D404
B-10
D406
B-10
D407
B-10
D408
B-10
D409
D-11
D410
D-11
D411
D-11
D801
D-7
D901
D-20
D902
C-20
D903
D-20
D904
D-20
IC1
E-5
IC301
F-9
IC303
D-10
IC304
F-10
IC701
B-5
IC702
C-9
IC703
C-4
Q1
E-6
Q2
G-5
Q101
F-10
Q102
G-8
Q103
H-8
Q201
E-9
Q202
G-8
Q203
G-9
Q301
E-9
Q307
C-11
Q308
C-10
Q309
C-10
Q310
E-8
Q401
B-11
Q402
B-11
Q403
B-10
Q404
B-10
Q405
B-11
Q406
C-10
Q407
D-9
Q408
A-10
Q409
D-11
Q701
B-6
Q801
D-6
• Semiconductor
Location
RED
WHT
BLK
11
(11)
11
(11)
11
(11)
11
(11)
11
(11)
11
(11)
11
(11)
11
(11)
1-672-302-
1-672-358-
DRY BATTERY
SIZE "D"
IEC DESIGNATION
R20 3PCS. 4.5V
DRY BATTERY
SIZE "D"
IEC DESIGNATION
R20 3PCS. 4.5V
BATTERY BOARD
VOLUME BOARD
POWER BOARD
CONTROL BOARD
LCD BOARD
CONNECTOR BOARD
HALF BATTERY
BOARD
BOARD
T901
POWER
TRANSFORMER
1-672-956-
BLU
WHT
WHT
RED
RED
WHT
BLU
YEL
1
3
5
1
3
5
S901
S901
VOLTAGE SELECTOR
110 - 120V
220 - 240V
1-672-960-
VOLTAGE SELECTION
BOARD
BOARD
J901
~ AC IN
1-672-958-
1-673-261-
DISPLAY/ENTER
PLAY MODE
LCD800
(LIQUID CRYSTAL DISPLAY)
1-672-957-
11
(11)
MEGA BASS
1-672-959-
VOLUME
RED
WHT
BLU
YEL
BLK
BRO
VIO
RECORD SWITCH
BOARD
BOARD
S301
REC
PB
1-672-955-
RED
WHT
GRY
WHT
L3
FERRITEROD
ANTENNA
(MW)
MAIN BOARD
OPTICAL
PICK-UP BLOCK
ASSY
CV1
TUNING
FINE
TUNING
ANT1
FM TELESCOPIC
ANTENNA
-1
-2
-7
-8
-5
-6
-3
-4
S1
BAND
MW
SW2
SW1
FM
S351
FUNCTION
TAPE
(CD/RADIO OFF)
RADIO
CD
D310
(OPR/BATT)
TONE
RED
WHT
BLU
YEL
BLK
BRO
VIO
11
(11)
RED
WHT
BLU
YEL
REC/PB
HEAD
11
(11)
1-672-961-
FINE TUNING BOARD
PS901
MONO ST BOARD
AEP, CEF, CET MODELS
AEP, CEF, CET MODELS
AEP, CEF, CET
MODELS
MODELS
E, EA, SP MODELS
E, EA, SP MODELS
E, EA, SP MODELS
E, EA, SP MODELS
AEP, CEF, CET MODELS
AEP, CEF, CET
MODELS
EA MODEL
AEP, CEF, CET
MODELS
E, EA, SP
MODELS
MODELS
R251
16
CFD-V77S
— 25 —
— 26 —
— 27 —
6-4. SCHEMATIC DIAGRAM – MAIN BOARD (1/3) –
• Refer to page 20 for Note on Schematic Diagram. • Refer to page 35 for IC Block Diagrams.
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
1
CN 301
2
REC MODE
30Vp-p
55.2kHz
10V/div
10
10
µ
sec/div
C313
CFD-V77S
— 28 —
— 29 —
— 30 —
6-5. SCHEMATIC DIAGRAM – MAIN BOARD (2/3) –
• Refer to page 20 for Note on Schematic Diagram. • Refer to page 35 for IC Block Diagrams.
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
2
IC701
#£
RFO
3
IC702
`
XTAO
0.2V/div
0.5
0.5
µ
sec/div
2V/div
50
50
µ
sec/div
104
5 Vp-p
1.0 Vp-p
16.9 MHz
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