Read Sony CFD-V27 Service Manual online
CFD-V27
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 Radio, TAPE section MAIN (1/2) –
no mark : PLAY (TAPE SECTION)
CD STOP
( ) : REC (TAPE SECTION)
[ ]
[ ]
: FM (RADIO SECTION)
< > : AM (RADIO SECTION)
– For CD Section MAIN (2/2) –
no mark : CD PLAY
TAPE STOP
• 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
BATTERY board
CONNECTOR board
HALF BATTERY board
CD MOTOR board
MAIN board
POWER board
VOLUME board
CONTROL board
INLET board
RECORD SWITCH board
DISPLAY board
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
FM TRACKING
FM F-COVERAGE
AM F-COVERAGE
AM IF
FM IF
L3, CT3
AM TRACKING
L1, CT1
L2, CT2
L4, CT4
MAIN BOARD
OPTICAL PICK-UP
BLOCK
(KSS-213CDM)
12
10
11
13
9
14
7
5
3
2
4
1
CNB701
3
4
1
2
5
6
CNP702
1-4
5-18
CNP802
CNP801
2
3
4
5
6
7
KH803
CNP803
LCD BOARD
CONTROL
BOARD
BOARD
4
3
2
1
CNP304
CNJ304
KH902
3
2
4
3
2
4
3
1
3
1
3
1
4
4
4
CNP907
CNJ907
CNB907
CNB907
CNB908
CNB908
BATTERY
BOARD
BOARD
POWER
BOARD
BOARD
HALF
BATTERY
BOARD
BATTERY
BOARD
DRY BATTERY
SIZE "D"
(IEC DESIGNATION R20)
6PCS. 9V
2
2
KH902
KH904
RECT
D901-904
T901
POWER
TRANSFORMER
1
2
2
4
KH306
KH308
KH307
KH307
KH307
KH308
KH307
KH306
4
3
1
CNJ302
CNJ302
CNB302
CNB302
CNP902
INLET BOARD
VOLUME
BOARD
BOARD
RECORD
SWITCH
BOARD
!
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