Read Sony CFD-S23 (serv.man3) Service Manual online
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SCHEMATIC DIAGRAM – MAIN SECTION (1/2) –
CFD-S23
1
2
3
VOLT/DIV : 0.2 V AC
TIME/DIV : 10
TIME/DIV : 10
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 0.1
TIME/DIV : 0.1
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 20
TIME/DIV : 20
µ
sec
IC3
1
(X OUT)
IC801
&™
(XTAL)
IC801
#º
(TX)
1.1 Vp-p
75 kHz
3.6 Vp-p
4.19 MHz
4.4 Vp-p
32.768 kHz
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Waveforms
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
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 9 V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM (Radio Section) PLAY (Tape Section)
(
no mark : FM (Radio Section) PLAY (Tape Section)
(
) : AM (Radio Section) REC (Tape Section)
• Voltages and currents are taken with a VOM (Input im-
pedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
E
: PB (L-CH)
d
: PB (R-CH)
a
: REC (L-CH)
G
: REC (R-CH)
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