Sony ICF-SW07 Service Manual ▷ View online
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ICF-SW07
5-2. BLOCK DIAGRAMS
• Signal path.
F
: FM
f
: SW
L
: MW/LW
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ICF-SW07
r
Waveforms (MAIN Section)
1
IC402
@¢
2
3
VOLT/DIV : 0.5 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
Q406
C
Q408
C
VOLT/DIV : 1 V AC
TIME/DIV : 0.1
TIME/DIV : 0.1
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 0.2
TIME/DIV : 0.2
µ
sec
1.8 Vp-p
75 kHz
3.8 Vp-p
377 nsec
5 Vp-p
594 nsec
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW
<
> : SW
[
] :AM EXT ANT CONNECTED
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: SW
L
: MW/LW
5-4. SCHEMATIC DIAGRAM (MAIN SECTION)
r
Refer to page 63 for IC Block Diagrams.
Click on the first or last page to see other ICF-SW07 service manuals if exist.