ICF-C1200 - Sony Audio Service Manual (repair manual). Page 11

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11
ICF-C1200
Note on Schematic Diagram: MAIN SECTION
• 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.
f
: internal component.
: B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V 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 : FM
   (
) : AM
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: Analog
f
: Digital
• Abbreviation
JE
: Tourist
z
 Waveforms
1
   IC301 ua XOUT
3
2
VOLT/DIV : 0.5 V AC
TIME/DIV : 2 
µsec
T401
VOLT/DIV : 1 V AC
TIME/DIV : 0.2 
µsec
VOLT/DIV : 10 V AC
TIME/DIV : 0.2 
µsec
1.3Vp-p
75kHz
5Vp-p
190nsec
Q401  C
33Vp-p
190nsec
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