Diagrams; Block Diagram - Sony CFD-V77S Service Manual

SECTION 6

DIAGRAMS

6-1. CIRCUIT BOARDS LOCATION
RECORD SWITCH board
CONNECTOR board
POWER board
BATTERY board
MONO ST board
HALF BATTERY board
VOLUME board
LCD board
CONTROL board
CD MOTOR board
VOLTAGE
MAIN board
SELECTION
board
FINE TUNING
board
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6-2. BLOCK DIAGRAM

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3
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CFD-V77S
AEP, CEF, CET MODEL
MONO ST
BOARD
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
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• ¢ : internal component.
• 2 : nonflammable resistor.
• C : panel designation.
• H : adjustment for repair.
• U : B+ Line.
CNB907
• 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.
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
– 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 MΩ).
VOLTAGE Voltage variations may be noted due to normal produc-
SELECTION tion tolerances.
BOARD • Signal path.
F
: FM
AEP, CEF, CET MODELS E,EA,SP MODELS
E
: PB
a : REC
J : CD
• Abbreviation
EA : Saudi Arabia model
SP : Singapore model
CEF : Italian model
CET : East European and Russian models
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