Sony ICF-SW7600GR - Portable Radio, Руководство по обслуживанию

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ICF-SW7600GR
4-5. SCHEMATIC DIAGRAM – MAIN BOARD (2/2) –
• Refer to page 16 for IC Block Diagrams.
Note on Schematic Diagram:
• 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.
• ¢ : internal component.
• C : panel designation.
• A : B+ Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F : FM
L
: MW/LW
h
: SW
• Abbreviation
CH : Chinese model
EA : Saudi Arabia model
IC B/D
IC B/D
IC B/D
IC B/D
1
2
1
IC201
wd
100 mVp-p
18.1 ns
550 ns
2
Q216 Collector
4.4 Vp-p
• WAVEFORMS