Sony PMC-222V, Руководство по обслуживанию

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PMC-222V
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5-9. SCHEMATIC DIAGRAM — VIDEO CD SECTION —
Note on Schematic Diagram:
• 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.
• ¢ : internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal CD conditions.
no mark : CD
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
(Page 40)
(Page 45)
VCD BOARD