Schematic Diagram - Main Section (1/2) - (Former Type) - Sony cfd-s27 Service Manual

r Refer to page 31 for IC Block Diagrams.
5-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – (FORMER TYPE)
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r Waveforms
1
IC3 1
2
IC801 &™
3
IC801 #º
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 Ω and
specified.
Note: The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
no mark : FM (Radio section)
( ) : AM (Radio section)
• Voltages and current are taken with a VOM (Input imped-
ance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
E : PB (L-CH)
d : PB (R-CH)
a : REC (L-CH)
G : REC (R-CH)
J : CD
– 25 –
CFD-S27
1.1 Vp-p
75 kHz
VOLT/DIV : 0.2 V AC
TIME/DIV : 10 µsec
3.6 Vp-p
4.19 MHz
VOLT/DIV : 1 V AC
TIME/DIV : 0.1 µsec
4.4 Vp-p
32.768 kHz
VOLT/DIV : 1 V AC
TIME/DIV : 10 µsec
1 / W or less unless otherwise
4
PLAY (Tape section)
REC (Tape section)
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