Read Sony ICF-C620 Service Manual online
– 15 –
• IC Block Diagrams
IC1 CXA1019S
30
29
26
28
27
25
24
1
8
5
3
4
6
7
GND
GND
AF OUT
VCC
RIPPLE
FILTER
AF IN
DET OUT
GND
GND
FM
DISCRI
NF
VOL
AM OSC
AFC
23
20
22
21
19
18
2
11
9
10
12
13
AFC AGC
AFC AGC
IF GND
METER
N.C
FM IF IN
FM OSC
REG OUT
FM RF
AM RF IN
N.C
FM RF IN
17
14
AM IF IN
FE GND
16
15
FM/AM
BAND
FM/AM
IF OUT
AF POWER AMP
FM
DISCRI
FM FE
AM FE
AM IF DET AGC
TUNING
METER
FM IF
22
21
18
20
19
17
16
1
8
5
3
4
6
7
VCC2
CC
PREF
VREG
NF(A)
OUT(A)
GND
PGND
MOTOR
SENSE
EQOUT(A)
EQIN(A)
IN(A)
C
15
12
14
13
2
11
9
10
VCC
OUT(B)
NF(B)
VOL IN
VREF
IN(B)
EQIN(B)
EQOUT(B)
V
REFERENCE
VOLUME
CONTROL
V1
CONVERTER
VOLUME
CONTROL
RIPPLE
FILTER
RIPPLE
FILTER
BASS
BOOST
V
REFERENCE
–
+
PRE AMP
–
+
PRE AMP
+
–
DRIVER
+
–
DRIVER
+
–
DRIVER
+
–
AMP
VREF
50
IC50 CXA1635S
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