Sony ICF-C212, Service Manual

Page: 10 / 16

ICF-C212
10 10
4-2. SCHEMATIC DIAGRAM
Note:
• 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.
Note:
The components identified by mark
0
or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
• Voltages are dc with respect to ground under
no-signal conditions.
no mark : FM
(
) : AM
• Voltages are taken with a VOM (Input imped-
ance 10 M Ω ).
Voltage variations may be noted due to normal
production tolerances.
• Signal path.
F
: FM
• Abbreviation
SP : Singapore
CT1
CV1 CT2
L2
CV2 CT3
L3
CV3 CT4 CV4
L1 L4
R12
R13
JW4
JW5
JW7
C7
C31
C18
R7
R8
C19
C20
C26
C28
JW1
C5
C8
C10 C11
C14
C16
C9
CF1
CF2
C15
JW3
CF3
D5
C25
C24
D1
S3
S6
S8
S7
W1
S4
S5
C23 R9
JW6
JW11
JW12
JW9
D2
JW8
R10
D3
D4
R6
C22
C21
T1
C27 C17
C32
JW2
R14
BPF1
D6
W2
RV1
R5
C2
R1
C3
C4
C6
C12
C33
R3
R4
Q1
R2
10k
10k
0.01
0.1
0.01
22k
220k
6800p
0.01
220
16V
1000
6.3V
47
10V
1
50V
4.7
50V
10
50V
47
10V
0.1
0.01
2.2
1SS119
0.01
0.01
1SS119
0.01 100k
1SS119
22
1SS119
1SS119
2.2k
0.01
0.01
1000
6.3V
100
10V
0.1
33
1N4002
50k
220
18p
2.2k
27p
3p
0.01
0.022
0.1
100k
220k
MSB70979-RT1
ALARM
47
AM
FREQUENCY
COVERAGE
FREQUENCY
COVERAGE
FM
FM
TRACKING
TRACKING
AM
L1,CT1
L2,CT2
L4,CT4 L3,CT3
TUNE
CV1-4