Diagrams; Block Diagram - Servo Section - Sony CDX-838 Service Manual

CDX-838
7-1. BLOCK DIAGRAM – SERVO Section –
PD1 I-V AMP
PD1
38
DETECTOR
+
PD2 I-V AMP
A D
PD2
39
B C
F
E
FOCUS/TRACKING
OPTICAL PICK-UP
BLOCK
(KSS-521A)
F
41
E
42
LASER DIODE
AUTOMATIC
LD
POWER CONTROL 36
Q11
LD
PD
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
2-AXIS
DEVICE
OUT+
2 TRACKING
OUT–
COIL DRIVE
1
OUT+
12
OUT–
COIL DRIVE
13
05
OUT+
26
M102 M
OUT–
MOTOR DRIVE
27
(SLED)
OUT+
M101 17
SPINDLE
M
OUT–
(SPINDLE)
MOTOR DRIVE
16
SECTION 7

DIAGRAMS

RF
RFO
33
SUMMING
AMP
RFI
32
FOCUS OK FOK
COMPARATOR
FOCUS OK
AMP
DATA
MIRR
TTL
RF AMP, AMP CLK
TTL
XLT
SERVO
IIL LOCK
DEFECT
IC11 (1/2) IIL
XRST
AMP
SENS1
IIL
C.OUT
SENS2
TTL
FOCUS
FEI FEO
FEO
FOCUS PHASE
1
ERROR 2
COMPENSATION
AMP
RV14
FE BIAS
FOCUS
40
GAIN
TRACKING
TEI TAO
TEO
I-V TRACKING PHASE
45 47
ERROR
AMP COMPENSATION
AMP
LD PD
AMP AMP
PD
37
IC51
IN
4
FOCUS IN
10
SLED SERVO
IC11 (2/2)
SLED IN SLO SLED SLP
24 16 14
AMP
IN
19
DIGITAL SIGNAL PROCESSOR, FILTER
CLV SERVO
IC101
39 42 38 40
RF ASYMMETRY
44 DIGITAL PLL
CORRECTION
ASYI
46
ASYO
47
FOK
27
23
DATO
22 15
CLKO
20 17
XLTO
21
16
19
23
SEIN
25 13
CNIN
DIGITAL CLV
24 14
26
6
26 27 28 29 64 8 7 9 10 12 11 75 76 77
13
SYSTEM CONTROLLER
IC201 (1/3)
54 C.OUT SUBQ 52
22 FOK SCLK 51
SENS2 SENS 23
8
CD.DATA 67
CD.CLK 65
CD.XLT 66
SCOR 63
GFS 24
21
XRST
CHUCKING MOTOR DRIVE
FIN
CH.F 4 4
RIN
MOTOR DRIVE
5
CH.R 5
SW12
(SAVE END DETECT)
LOAD1 7
SW11
(CHUCKING END DETECT)
LOAD2 6
SW1
(LIMIT)
LIM.SW 9
16 16
D.OUT
DIGITAL
71
OUT
PCMD
52
BCKO
54
LRCK
50
EFM
DEMODULATOR
RFCK
62
C2PO
63
1
WDCK
49
7
2
IC403
(2/2)
SUB-CODE
PROCESSOR
16K
RAM
ERROR
CORRECTOR
GTOP
58
WFCK
74
EMPH
72
CPU INTERFACE
CLOCK
70
GENERATOR
C4M
61 100 89
EDGE DETECT
IC403 (1/2)
DATA
CLOCK
IC52
OUT1
1
CHUCKING M103
M
OUT2
(CHUCKING)
7
ON : When completion of the disc
chucking operation.
ON : When completion of the disc
chucking operation.
ON : When the optical pick-up
is inner position.
DATA, PCMD, BCK,
LRCK, WDCK
DATA
A
(Page 17)
PCMD
BCK
LRCK
RFCK, GTOP, WFCK,
C4M, XROF,
RFCK
B
(Page 17)
WDCK
GTOP
WFCK
C4M
C16M
C
(Page 17)
SCLK
D (Page 17)
SBSO
E
(Page 17)
XROF
DATA, CLOCK
F
(Page 17)
SCOR
G (Page 17)
RESET
H (Page 17)
• SIGNAL PATH
: CD PLAY (ANALOG OUT)
: CD PLAY (DIGITAL OUT)