Sony cfd-s27 - Schematic Diagrams (New Type)

– 39 – – 40 – – 42 –– 41 –
CFD-S27
1
IC3 1
r
Waveforms
VOLT/DIV : 0.2 V AC
TIME/DIV : 10 µsec
2
IC801 &™
VOLT/DIV : 1 V AC
TIME/DIV : 0.1 µsec
3
IC801 #º
VOLT/DIV : 1 V AC
TIME/DIV : 10 µsec
1.1 Vp-
p
75 kHz
4.19 MHz
3.6 Vp-p
4.4 Vp-p
32.768 kHz
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
1
/
4
W or less unless otherwise
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)
PLAY (Tape section)
( ) : AM (Radio section)
REC (Tape 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
5-7. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – (NEW TYPE)
r
Refer to page 31 for IC Block Diagrams.