Read Sony ICF-C1200 Service Manual online
12
ICF-C1200
• IC BLOCK DIAGRAMS
IC101 CX1238N-T4
IC201 CXA1522N-T4
30
29
4
5
6
7
8
9
10
11
12
13 14 15
3
2
1
28 27
26 25 24 23 22 21
20
19
18
17
16
REG
FM FRONT-END
AM FRONT-END
VCO
MPX REG.
1/2
COUNTER
1/2
COUNTER
PD1
PD2
MUTING
DECODER AMP
MONO/ST
SELECT
RIPPLE
FILTER
AUTOBLEND
BAND PASS
MUTE
TUNING
INDICATOR
FM IF/
DISCRI
AM
IF/DET
GND
PLL LPF
MPX REG
VCO
FM
DISCRI
MUTE
AM OSC
AFC
FM OSC
REG 1.25V
FM RF
AM RF IN
FM RF IN
BAND SELECT
AM IF IN
FM IF IN
TUNING
GND
VCC
L CH OUT
R CH OUT
VCO
PILOT LPF
DET
PLL LPF
AFC/AGC
AGC AFC
RIPPLE
FIL
TER
FE GND
FM/AM
FE OUT
REG
VOL
PRE+POWER1
PRE+POWER2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN1
REG
NF1
VOL
GND1
P-GND1
OUT1
VCC
IN2
NC
NC
NF2
GND2
P-GND2
OUT2
RIPPLE
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