Sony PMC-222V, Service Manual

Page: 30 / 58

PMC-222V
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5-6. SCHEMATIC DIAGRAM — TUNER, TAPE, AMP SECTION —
• Waveform
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.
•
V
: B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : FM
(
) : AM
<< >> : REC
[ ] : PB
• 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.
F : FM
f
: AM
E
: PB
a : REC
J
: CD
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
(Page 37)
TO
(Page 57)
TO
J1003
(Page 40)
TO
CNP311
Q306
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