Schematic Diagrams - Sony ICF-1000L Service Manual

4-4. SCHEMATIC DIAGRAMS

– 15 – – 16 –
z Waveform
1
(Band : FM)
Q101 C
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF • Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
50 WV or less are not indicated except for electrolytics
no mark : FM
and tantalums.
• All resistors are in Ω and
( ) : MW/LW/SW
1 / W or less unless otherwise
4
• Voltages are taken with a VOM (Input impedance 10
specified.
MΩ).
• f : internal component.
Voltage variations may be noted due to normal produc-
Note: The components identified by mark 0 or dotted
tion tolerances.
line with mark 0 are critical for safety.
• Waveforms are taken with a oscilloscope.
Replace only with part number specified.
Voltage variations may be noted due to normal produc-
tion tolerances.
• : B+ Line.
• Circled numbers refer to waveforms.
• H : adjustment for repair.
• Signal path.
• Power voltage is dc 6 V and fed with regulated dc power
F
: FM
supply from battery terminal.
f : MW
– 17 –
ICF-1000L
12 Vp-p
VOLT/DIV : 5 V AC
TIME/DIV : 1 msec