Diagrams; Block Diagram - Servo Section - Sony CDX-656 Service Manual

6-1. BLOCK DIAGRAM – SERVO Section –
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
DETECTOR
AC
EQ
A RFAC
SUM
IN
A RFAC
SUMMING
6 4 3
VCA
AMP
B
B
7
C
C
8
RFDC
D
SUMMING
D
9 AMP
RW/ROM
FOCUS
ERROR
AMP
E
E
10
TRACKING
ERROR
F
F
AMP
11
RW/ROM
LASER DIODE
AUTOMATIC
POWER LD
1 APC AMP
CONTROL
Q101
PD LD
OPTICAL
PICK-UP BLOCK
(KSS-720A OR KSS-721A)
TRACKING/FOCUS COIL DRIVE,
SLED/SPINDLE/CHUCKING
MOTOR DRIVE
IC201
2-AXIS DEVICE
VO3+ VIN3+
8
COIL
VO3– VIN3–
DRIVE
9
(TRACKING)
(FOCUS)
VO4+ VIN4+
6
COIL
VO4– VIN4–
DRIVE
7
VO2+ VIN2+
10
MOTOR
M101 M
VO2– VIN2–
DRIVE
(SLED)
11
VO1+
12
M102 MOTOR VIN1–B
M
VO1–
(SPINDLE) DRIVE
13
VL0+ FWD
5
M103 MOTOR
M
VL0– REV
(CHUCKING) DRIVE
4
SECTION 6

DIAGRAMS

FILTER
54 53 56 55
RFAC
RF EQ RFAC ASYMMENTRY
DIGITAL
15 51
AMP CORRECTOR PLL
MODULATOR
ASYI
49
ASYO
48
RFDCO
RFDC
28
RF AMP OFFSET
DC OFST
30 CONTROL SWITCH
Q102
FE
FE
16
TE
TE
18
SW
12
PD
2
43 39 41 40
OP AMP
ANALOG SWITCH
A/D CONVERTER
TFDR
25 30
TRDR
24 31
MIRR
DFCT
FFDR
FOK
32 32
FRDR
31 33
SFDR
22 28
SRDR
21 29
MDP DIGITAL
18 26
CLV
1
2
ON : When the optical pick-up
is inner position
ON : When completion of the disc
chucking operation
ON : When completion of the disc
save operation
SERIAL
EFM
D/A
IN
DE-
INTERFACE
INTERFACE
16k RAM
ERROR
CORRECTOR
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC101
CD-ROM/RW
SELECT SWITCH
Q202
EMPH
64
GFS
18
DATA
5
CLOK
7
XLAT
6
SENS
8
SQSO
1
SQCK
SUBCODE CPU
2
PROCESS INTERFACE
SCOR
20
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
SCLK
9
FOK
24
XRST 3
27
SW3
(LIMIT)
SW1
(CHUCKING END DETECT)
SW2
(SAVE END DETECT)
17 17
AOUT1 AIN1 LOUT1
70 71
PWM
DIGITAL FILTER,
& BUFFER
NOISE SHAPER
AOUT2 LOUT2
AIN2
INTEGRATOR
77 76
XTAO
CLOCK TIMING
GENERATOR LOGIC
XTAI
99 RW SEL
66 EMPH
MUTE 67
42 GFS
61 CDDAT
59 CDCLK
60 CDLAT
44 SENS
56 SQSO
58 SQCK
52 SCOR
SYSTEM CONTROLLER
IC201 (1/2)
43 SCLK
41 FOK
62 XRST
5 LOADF
6 LOADR
98 LIM SW
97 LOAD SW
96 SAVE SW
CDX-656/656X
Ver. 1.1
CN901 (1/2)
72 L
GROUND-
AUDIO
ISOLATION
OUT
IC401
75 R
67
X501
16.9344MHz
MUTING
60
Q410, 420
MUTING CONTROL
SWITCH
Q402
• SIGNAL PATH
: CD PLAY