Read Sony ICF-C201 / ICF-C205 (serv.man2) Service Manual online
ICF-C201/C205
10
10
ICF-C201/C205
4-2. SCHEMATIC DIAGRAM
IC1
L2
L3
C3
R1
R14
C5
C6
C8
R2
JW1
S1
C9
R6
T1
CF1
CF2
C10
C11
C12
C13
C14
C39
C15
SP1
D8
C33
C26
C27
C28
D2
L5
L6
C18
C32
C21
C22
JW3
C19
R8
RV1
R10
C36
C35
C17
R15
JW4
L4
C16
CF3
C4
JW5
C2
C37
C1
Q1
R7
S7
S8
S5
S6
S4
S3
D1
C20
C23
R9
C25
C24
D5
D6
IC2
R3
C31
JW2
R4
JW7
C38
D3
D4
JW6
L5
L6
CXA1019M
27p
2.2k
68k
47
10V
0.01
1
47
0.01
2.2k
4.7
50V
10
50V
0.022
1
47
10V
1
1
IPS226
100p
220
16V
16V
1000
10V
1000
10V
1SS133T-77
0.01
0.1
0.01
0.01
6800p
220k
50k
22
0.01
0.01
220
10V
10V
2.2k
6p
22p
0.001
7p
2SA2135-F
ALARM
22k
1SS133T-77
0.01
0.01
100k
0.01
0.01
1SS133T-77
1N4002B
SC8560
100k
1
220k
100p
1SS119-25
1SS119-25
1
2
3
4
5
6
7
8
9
10
11
12
13
13
12
11
10
9
8
7
6
5
4
3
2
1
AM
ANTENNA
POWER
TRANSFORMER
T2
CT1
CT2
CT3
CT4
NC
METER
IF GND
AFC AGC
AF IF
RIPPLE FILTER
VCC
AF OUT
GND
DET OUT
ALARM OUT
SLEEP OUT
ALARM OFF
MIN SET
HOUR SET
SLEEP INPUT
SNOOZE INPUT
CR INPUT
50/60HZ SELECT
12/24HR SELECT
50/60HZ INPUT
ALARM DISP
10íSMIN E MINE
MIN BG
MIN CD
MIN AF
10íSMIN AF
10íSMIN BG
10íSMIN CD
AM 10íS AG DE
10íS HRC
HR BG
HR CD
HR AF
FE GND
FM RF IN
NC
AM
RF IN
FM RF
REG OUT
FM OSC
AFC
FM/AM
IF OUT
AM
OSC
VOL
NF
GND
FM DISCRI
FM
/AM BAND SELECT
AM
IF IN
FM
IF IN
L1
TRACKING
AM
L1,CT1
FREQUENCY
COVERAGE
FM
FM
TRACKING
L3,CT3
AM
FREQUENCY
COVERAGE
L4,CT4
CV1-4
C16
0.1
1
AFC AGC
COL ON OUT
CV1
CV2
CV3
CV4
FERRITE-BAR
CT2
TUNING
PM 10íS HRB
VDD
VSS
C205
C205:SP, AR, TH
*
*
C205
C205
C205
C205
C201
C205
C205
C205
C205
C201
C201
C205
C201
C201
C201
C201
C205
C205
C201
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. (p: pF) 50V 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.
• Voltages are dc with respect to ground under no-signal condi-
tions.
no mark : FM
( ) : AM
no mark : FM
( ) : AM
Note: The components identified by mark
0
or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
• 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
• Abbreviation
AR
: Argentina model
SP
: Singapore model
TH
: Thai model
Ver. 1.2
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