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Sony CDX-3250 Service Manual page 8

Fm/mw/lw compact disc player
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• IC Block Diagrams
IC1 CXD2507AQ
64
SERVO AUTO
1
FOK
SEQUENCER
2
MON
CPU
MDP
3
INTERFACE
14
4
MDS
LOCK
5
TEST
6
FILO
7
DIGITAL
8
FILI
PLL
9
PCO
10
VSS
11
AVSS
CLTV
12
ASYMMETRY
AVDD
13
CORRECTOR
5
RF
14
BIAS
15
ASYI
16
ASYO
17
ASYE
18
WDCK
19
20 21 22 23 24 25 26 27
IC3 BA6796FP
28
27
26
25
THERMAL
DOWN
CTL1
1
2
3
4
63
61
60
59
58
55
54
52
62
57
56
53
5
SUB CODE
PROCESSOR
DIGITAL
CLV
4
EFM
DEMODULATOR
3
D/A
INTERFACE
ERROR
6
16K
CORRECTOR
RAM
3
28
29 30 31 32
24
23
22
LEVEL
SHIFT
LEVEL
SHIFT
SHUT
LOGIC
V/I
CTL2
FWD
REV
5
6
7
8
51
DATA
50
XRST
49
SENS
48
MUTE
47
SQCK
46
SQSO
45
EXCK
44
SBSO
43
SCOR
42
VSS
41
WFCK
40
EMPH
DIGITAL
39
DOUT
OUT
38
C4M
37
FSTT
36
XTSL
35
XTAO
34
XTAI
33
MNTO
21
20
19
18
DRIVE
VCC
BUFFER
LEVEL
SHIFT
LEVEL
SHIFT
DRIVE
DRIVE
BUFFER
BUFFER
9
10
11
– 37 –
17
16
15
DRIVE
DRIVE
DRIVE
BUFFER
BUFFER
BUFFER
DRIVE
DRIVE
DRIVE
BUFFER
BUFFER
BUFFER
14
12
13

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This manual is also suitable for:

Cdx-4280