Schematic Diagram - Main Section - Sony MDX-C7900 Service Manual

MDX-C7900/C7900R
5-7. SCHEMATIC DIAGRAM – MAIN Section – • See page 3 for Type A/Type B Discrimination.
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• See page 42 for IC Block Diagrams and page 45 for Waveforms.
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Note on Schematic Diagram: • Voltages are taken with a VOM (Input impedance 10 M ).
• All capacitors are in F unless otherwise noted. pF: F Voltage variations may be noted due to normal produc-
50 WV or less are not indicated except for electrolytics
tion tolerances.
and tantalums.
• Waveforms are taken with a oscilloscope.
• All resistors are in and 1 / W or less unless otherwise Voltage variations may be noted due to normal produc-
4
specified. tion tolerances.
• f : internal component. • Circled numbers refer to waveforms.
• C : panel designation. • Signal path.
• U : B+ Line. F
: FM
• H : adjustment for repair. f
: AM
• Power voltage is dc 14.4V and fed with regulated dc power E : MD
supply from ACC and BATT cords. L : BUS AUDIO IN
• Voltages and waveforms are dc with respect to ground • Abbreviation
under no-signal (detuned) conditions. CND : Canadian
no mark : FM G : German
( ) : AM
: LW
< > : MD
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