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HCD-XGR90AV
Q Q
7-2. BLOCK DIAGRAMS
3 7 6 3 1 5 1 5 0
– CD SERVO SECTION –
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
CD D+5V
A
A
PD1
6
RF
SUMMING
B
PD2
B
AMP
7
C
C
8
D
∑ A-D
D
9
ERROR AMP
F
I1-6
F
11
F I-V AMP
E
TRACKING
I5-10
E
10
E I-V AMP
ERROR AMP
OPTICAL PICK-UP BLOCK
(A-MAX.3)
LASER DIODE
LD
LD
LD
APC LD
DRIVE
1
AMP
Q101
PD
LD
PD
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
CH4SIN
M
25
CH4OUTR
SPINDLE
DRIVE
16
MOTOR
CH3OUTF
CH3FIN
17
24
M102
MOTOR
M
CH3OUTR
CH3RIN
SLED
DRIVE
18
23
MOTOR
CH2FIN
T+
CH2OUTF
12
5
COIL
TRACKING
CH2OUTR
CH2RIN
DRIVE
COIL
11
6
T-
F+
CH1OUTF
CH1FIN
14
2
COIL
FOCUS
CH1OUTR
CH1RIN
DRIVE
COIL
13
3
F-
MUTE
20
w w w
RFAC
RFAC
RF EQ
ASYMMETRY
15
51
AMP
CORRECTION
ASYI
49
ASYO
RFDCO
48
28
DC
RFDCI
PWM3
AMP
29
FE
16
FOCUS
FEI
PWM1
17
DIGITAL
TE
CLV
PROCESSOR
18
26
3
14
SW
12
NC
PD
APC PD
2
AMP
PWM2
BUFFER
Q451-454
40
41
39
43
DIGITAL SERVO
PROCESSOR
IC101 (2/2)
A/D
CONVERTER
SFDR
28
SRDR
29
FOK
TFDR
24
30
MIRR/DFCT/
MIRR
22
FOK
TRDR
DFCT
31
DETECTOR
23
FFDR
32
FRDR
33
TO SERVO INTERFACE
x
a o
.
i
http://www.xiaoyu163.com
FILTER
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC101 (1/2)
54
56 53
55
PCMD
16K
62
RAM
BCK
D/A
63
INTERFACE
LRCK
61
C2PO
EFM
DIGITAL
19
DEMODULATOR
PLL
SERIAL
IN
INTERFACE
ERROR
CORRECTOR
SUBCODE
SERVO AUTO
SERVO
SEQUENCER
INTERFACE
DIGITAL
CPU INTERFACE
OUT
5 6
7
8
20
1 2
9 21 27
64 15
18
60
NC
NC NC NC
S101
(LIMIT)
ON :
When the optical pick-up
is inner position.
Q
Q
3
7
33
SQ-CLK
CD-MUTE 5
32
SQ-DATA
19
SCOR
34
SENS
37
CD-CLK
36
XLT
TBL-SENS
35
CD-DATA
40
HOLD
BU UP/DW SW
PWM1
28 BU-PWM1
PWM2
26
BU-PWM2
PWM3 24
BU-PWM3
LED-DISK 47
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (1/4)
NC
MTR-CTRL1
NC
NC
MTR-CTR2
43 XRST
u 1 6 3
y
22
22
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2
4
8
9
9
NC
NC
NC
NC
AOUT1
AIN1
PWM
70
71
DIGITAL
FILTER,
&
BUFFER
AOUT2
AIN2
NOISE SHAPER
INTEGRATOR
77
76
TO MIRR/DFCT/
FOK DETECTOR
CLOCK
TIMING
GENERATOR
LOGIC
6
3
1
5
1
5
0
8
9
DISC TABLE
SENSOR
49
IC202
48
S201
(UP SWITCH)
LED DRIVE
D201
Q201
(DISC No.)
TABLE MOTOR DRIVER
IC201
Q412
OUT2
IN2
44
1
3
MOTOR
M201
M
(TABLE)
DRIVE
IN1
OUT1
45
9
7
Q411
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
m
c o
.
2
8
9
9
CD-L
LOUT1
A
72
(Page 24)
LOUT2
75
R-CH
MUTE
Q401
XTAI
66
XTAO
X101
67
16.9344MHz
CD DIGITALOUT
OPTICAL
OPTICAL
TRANSCEIVER
IC451
Q809,810
LEVEL SHIFT
2
4
9
8
2
9
9
: CD PLAY (ANALOG)
: CD PLAY (DIGITAL)
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