Read Sony ICF-B200 Service Manual online
– 11 –
– 12 –
5-2. SCHEMATIC DIAGRAM • Refer to page 8 for IC Block Diagrams.
ICF-B200
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or
• 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.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power supply
from battery terminal.
• Voltage is dc with respect to ground under no-signal (detuned)
condition.
no mark : FM
(
no mark : FM
(
) : AM
<
> : BUZZER ON
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production toler-
ances.
ances.
• Signal path.
F
: FM
f
: AM
TOTAL CURRENT
FM : 6.0mA
AM : 4.5mA
BUZZER ON : 30mA
LIGHT ON : 60mA
FM : 6.0mA
AM : 4.5mA
BUZZER ON : 30mA
LIGHT ON : 60mA
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