11
ICF-C1200
Note on Schematic Diagram: MAIN SECTION
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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
µ
sec
T401
VOLT/DIV : 1 V AC
TIME/DIV : 0.2
µ
sec
VOLT/DIV : 10 V AC
TIME/DIV : 0.2
µ
sec
1.3Vp-p
75kHz
5Vp-p
190nsec
Q401
C
33Vp-p
190nsec
