Block Diagram -Cd Section - Sony CDX-CA900 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
3-3. BLOCK DIAGRAM — CD SECTION —
OPTICAL PICK-UP
KSS-720A
A
C
B
I-V
D
CONV.
E
F
PD
DRIVE
LD
T E
L 1 3 9 4 2 2 9 6 5 1 3
FOCUS
COIL
TRACKING
COIL
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
• Signal path
:CD
• R-ch is omitted due to
same as L-ch.
w w w
.
RF AMP,DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
IC1
A
84
C
85
RF
B
EQ
82
D
83
FORCUS
ERROR
E
87
TRACKING
F
ERROR
SERVO
86
CTL
APC
PD
97
LD
A+5V
Q1
LD
98
62 63 64 65
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING MOTOR DRIVE
IC2
FCS-
FOCUS
15 FD
COIL 26
FCS+
16
DRIVE
TRK+
TRACKING TD
17
COIL 23
TRK-
18 DRIVE
SL-
M SLED
13 SD
5
MOTOR
SL+
14
DRIVE
SP-
SPINDLE
M
11
MD
MOTOR
6
SP+
12 DRIVE
LOAD
LD-
LOADING
M 9
1
MOTOR
EJECT
LD+
10
DRIVE 2
x a o
y
i
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(Page 20)
LOUT
16 CDL
D/A
ROUT
EFM
CONV 12 R-CH
DEMOD
PACK
52
TSTB
56
DSUB CODE
TSCK
PROCESS 55
TSI
54
SI
8
SO
7
SCK
6
I/F STB
5
AO
4
RST
3
RFOK
2
OSC
23 24
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3 7 6 3
X1
16.9344MHz
SW4
(DOWN)
SW2
(SELF)
SW1
(DISC IN)
SW3
(LIMIT)
A+5V
AU+5V 1 2
7
D+5V SW5V
VCC 6 BATT
3 SW6V
DR+6V
POWER SUPPLY
BU+5V 5
5V
IC801
u 1 6 3
.
19 19
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TUNER
SECTION
A
SYSTEM CONTROL
IC501 (1/3)
64 CD_PACK
120 TSTB
26 CD_TSO
25 CD TSI
27 CD TCK
4
STB
3 AO
2 CD_RST
1
RFOK
1 5 1 5 0 8 9 2 4
29 D SW
67 SELFSW
30 IN/PH2
7 LIMIT
32 LOAD
35 EJECT
105
CDM ON
Q405
106 CD ON
m
c o
CDX-CA900/CA900X
2
9 9
9 8 2 9 9