Sony CDX-656 Service Manual page 27

• IC Block Diagrams
– RF Board –
IC101 CXA2581N-T4
DVC –
VOFST
+
VC
VC
LD 1
PD 2 APC AMP
EQ IN 3
RFAC
AC SUM 4 SUMMING
AMP
GND 5
B C D
A
A
A 6
B
B 7
C
C 8
D
D 9
E 10 GM
F 11 GM
APC-OFF
(Hi-Z)
SW 12
RW/ROM
(H/L)
DVCC 13
B
DVC
D
DVC 14
A
C
RFAC 15
RW/ROM
A
–
–
B
+
+
C
DVC
D
DVC
VCC
VC
RW/ROM
EQ
EQ ON/OFF
RFAC
VCA
RW/ROM
VCC
VOFST
B
C
–
–
A
+
+
D
DVC
VC
RW/ROM
RW/ROM
–
+
VC
RW/ROM
RW/ROM
VOFST
–
–
+
+
DVC
VC
RW/ROM
30 DC OFST
29 RFDCI
28 RFDCO
27 VC
26 RFC
25 VFC
24 BST
23 RFG
22 VCC
21 CEI
20 CE
19 TE BAL
18 TE
17 FEI
16 FE
CDX-656/656X
27