Sony 757MX Service Manual - Page 34
IC Block Diagrams, RF Board
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UPC - 027242597846
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CDX-757MX • IC Block Diagrams - RF Board - IC101 CXA2581N-T4 RW/ROM A - B + C D DVC - + DVC VCC 30 DC OFST 29 RFDCI 28 RFDCO DVC - + VOFST VC RW/ROM VC 27 VC LD 1 PD 2 VC APC AMP 26 RFC EQ 25 VFC 24 BST EQ IN 3 AC SUM 4 GND 5 A6 B7 C8 D9 RFAC SUMMING AMP A B CD A B C D EQ ON/OFF RW/ROM RFAC VCA VCC B VOFST C - A + - + D DVC VC RW/ROM RW/ROM 23 RFG 22 VCC 21 CEI 20 CE 19 TE BAL E 10 GM F 11 GM SW 12 DVCC 13 APC-OFF (Hi-Z) RW/ROM (H/L) B DVC D DVC 14 A C RFAC 15 - + VC RW/ROM RW/ROM VOFST - + - + DVC VC RW/ROM 18 TE 17 FEI 16 FE 34
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34
CDX-757MX
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
A
A
A
B
C
D
B
C
D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
•
IC Block Diagrams
– RF Board –
IC101
CXA2581N-T4