Diagrams; Block Diagram - Cd Servo Section - Sony HCD-GX8000 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-1. BLOCK DIAGRAM – CD SERVO Section –
CD A+5V
A
6
RF
SUMMING
B
AMP
7
C
8
D
DETECTOR
9
F
11 F I-V AMP
E
10 E I-V AMP
OPTICAL PICK-UP
BLOCK
(A-MAX. 3)
LASER DIODE
AUTOMATIC
LD
POWER APC LD
1
CONTROL AMP
Q101
PD LD
T E
L 1 3 9 4 2 2 9 6 5 1 3
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
CH4OUTF
15
M101 MOTOR
M
CH4OUTR
(SPINDLE) DRIVE
16
CH3OUTF
17
M102
MOTOR
M
CH3OUTR
(SLED)
DRIVE
18
2-AXIS
DEVICE
CH2OUTF
12
COIL
CH2OUTR
DRIVE
11
CH1OUTF
14
COIL
CH1OUTR
DRIVE
13
(LIMIT)
ON : When the optical
pick-up is inner
position
w w w
.
SECTION 7

DIAGRAMS

RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
AC EQ
SUM IN RFAC
RFAC
4 3 15
EQ
VCA
FE
FOCUS
16
ERROR AMP
FEI PWM1
17
RFDCO
RF DC
28
AMP
RFDCI PWM3
29
TE
TRACKING
18
ERROR AMP
RV101
TE BAL
19
E-F BALANCE
(1 TRACK JUMP)
SW
12
PD
2
PWM2
CH4SIN
25
40 41 39 43
DIGITAL SERVO
PROCESSOR
CH3FIN
24
IC101 (2/2)
A/D
CH3RIN
23
CONVERTER
SFDR
28
SRDR
29
CH2FIN TFDR
5 MIRR/DFCT/
30
FOK
CH2RIN TRDR
6 31
DETECTOR
FFDR
32
FRDR
33
CH1FIN
2
TO SERVO INTERFACE
CH1RIN
3
MUTE 20
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8
FILTER
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC101 (1/2)
54 56 53 55
16K
RAM
RFAC ASYMMETRY DIGITAL EFM
51
CORRECTION PLL DEMODULATOR
ASYI
49
ASYO
48
ERROR
CORRECTOR
DIGITAL SUBCODE SERVO AUTO SERVO
CLV PROCESSOR SEQUENCER INTERFACE
CPU INTERFACE
26 3 14 5 7 6 8 20 1 2 9 21 27 64 15
Q Q
34 19 32 33
3 7 6 3
CD-MUTE
35 CD-DATA
37 CD-CLK
TBL-SENS
36 XLT
LASER DIODE
40 LD-ON
ON SWITCH
BU UP/DOWN-SW
Q202 – 205
PWM1
28 BU-PWM1
PWM2
26 BU-PWM2
PWM3 OPEN-SW 46
24 BU-PWM3
CLOSE-SW 47
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (1/4)
FOK
24 LOAD-OUT 45
MIRR
22
LOAD-IN 44
DFCT
23
43 XRST
u 1 6 3
.
23 23
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2 4
9 9 8
PCMD
62
BCK
D/A 63
LRCK
INTERFACE
61
C2PO
19
AOUT1
70
SERIAL DIGITAL PWM
IN FILTER, &
AOUT2
INTERFACE NOISE SHAPER INTEGRATOR
77
TO MIRR/DFCT/
FOK DETECTOR
CLOCK
DIGITAL
GENERATOR
OUT
18 60
OPTICAL
CD DIGITAL OUT
TRANSCEIVER
OPTICAL
IC201
1 5 1 5 0 8 9 2 4
50
DISC TRAY
49 STATUS SENSOR
IC711
S711
OPTICAL PICK-UP
48
UP/DOWN DETECT
OPEN S701
DISC TRAY OPEN/CLOSE
DETECT
CLOSE
TURN MOTOR
DRIVER
IC701
FIN OUT2
7 2 M721
MOTOR
M
RIN OUT1
(TURN)
9 DRIVE 4
m
c o
HCD-GX8000/RG77
2
9 9
CD
L-CH
AIN1 LOUT1
71 72 A
BUFFER
(Page 25)
AIN2 LOUT2
76 75 R-CH
MUTING
Q201
R-CH
TIMING
LOGIC
MUTING CONTROL
SWITCH
Q206, 207
67 66
X101
16.9344MHz
9 8 2 9 9
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: CD PLAY (ANALOG)
: CD PLAY (DIGITAL OUT)