Read Sony CFD-V77S (serv.man2) Service Manual online
CFD-V77S
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2-4. SCHEMATIC DIAGRAM CD SECTION
• Refer to page 21 for IC Pin Function.
• Refer to page 25 for IC Block Diagrams.
• Waveforms
Note on Schematic Diagram:
• 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.
•
Y
: B+ Line.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD
no mark : CD
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Signal path.
• Signal path.
J
: CD
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
2
IC701
qh
RFO
3
IC702
yj
XTAO
0.2V/div
0.5
0.5
µ
sec/div
2V/div
50
50
µ
sec/div
5 Vp-p
1.1 to 1.3 Vp-p
16.9 MHz
(Page 12)
(Page 11)
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