Sony PMC-MD55 Service Manual page 156

PMC-MD55
6-15. SCHEMATIC DIAGRAM – MAIN (SYSTEM CONTROL) Section – •
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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.
– 70 –
•
See page 100 for Waveforms. See page 104 for IC Block Diagram.
(Page 73)
• All resistors are in Ω and
1 / W or less unless otherwise • Voltages and waveforms are dc with respect to ground
4
specified.
• A : B+ Line.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
under no-signal (detuned) conditions.
no mark : FM tion tolerances.
( ) : CD PLAY
[ ] : MD PLAY – 71 –
• Waveforms are taken with a oscilloscope. • Circled numbers refer to waveforms.
• Signal path.
Voltage variations may be noted due to normal produc-
tion tolerances. F : FM
E : MD PLAY
– 72 – j : MD REC
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• Abbreviation
CND : Canadian model