Read Sony ICF-C201 / ICF-C205 (serv.man2) Service Manual online
11
ICF-C201/C205
IC1 CXA1019M
• IC Block Diagram
20
21
22
23
24
25
26
27
28
1
2
4
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
AF POWER AMP
AM IF DET AGC
AM FE
FM
DISCRIMINATOR
FM FE
TUNING
METER
FM IF
FM/AM
BAND
SELECT
AM IF IN
FM IF IN
N.C
METER
IF GND
AFC AGC
AFC AGC
DET OUT
AF IF
RIPPLE
FILTER
VCC
AF OUT
GND
GND
FM DISCRI
NF
VOL
AM OSC
AFC
FM OSC
REG OUT
FM RF
AM RF IN
N.C
FM RF IN
FE GND
FM/AM
IF OUT
IC2 LM8560N
OSC
CTR
GATE
GATE
D
OUTPUT
CONTROL
COMPARATOR
STAND
BY DET
BLANK
&
FLASH
OUTPUT
DECODER/
DRIVER
INPUT
CONTROL
PWR
UP
1/2
SEC
CTR
CTR
RESET
CONTROL
1/25 OR 1/30
DISPLAY
CONTROL
TIME
HR CTR
CONTROL
ALARM
HR CTR
D
D
D
D
D
SLEEP
CTR
ALARM
MIN CTR
TIME
MIN CTR
SEC RSTYHLD
TIME
SEC
ALARM
SLEEP
28
27
26 25
24
23
22
21
20
18
14
1 – 13
16 15
17
PWR UP
TONE
PWR
UP
50/60Hz
50/60Hz
50/60Hz
50/60Hz
50/60Hz
50/60Hz
2Hz
50/60Hz
T.DISP &
S.SAMPLE
T.RST
AL.RST
SEC DISP
T.DISP
AL.DISP
SL.DISP
TIME &
S.SAMPLE
TIME &
F.SAMPLE
ALARM &
F.SAMPLE
ALARM &
S.SAMPLE
2Hz
F.SAMPLE
S.SAMPLE
50/60Hz
12/24 HR
SELECT
CR
INPUT
50/60 Hz
SELECT
50/60 Hz
INPUT
SNOOZE
INPUT
SLEEP
INPUT
HOUR
SET
MIN
SET
VSS
ALARM
OFF
SLEEP
OUT
ALARM
OUT
VDD
19
ALARM
DISP
COL ON
OUT
SEGMENT
OUTPUT
PF.
DET
1kHz
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