Sony HCD-GX40 Service Manual page 20

HCD-GX40
Q Q
5-2. Block Diagrams
3 7 6 3 1 5 1 5 0
CD Section
OPTICAL PICK-UP
BLOCK
DETECTOR
VCC +5V
VC
A
B
C
D
E
F
Q731
LD
LD
DRIVER
GND
PD
VR
IC781
FCS/TRK COIL,
SL/SP MOTOR
DRIVER
F+
1 CH1OUT-A
FOCUS
CH1IN-A
COIL
T E
L F 1 3 9 4 2 2 9 6 5 1 3
2 CH1OUT-B
CH1IN-B
T+
27 CH4OUT-A
TRACKING
CH4IN-A
COIL
T
26
CH4OUT-B
11 CH2OUT-B
M
(SLED) CH2IN-B
12 CH2OUT-A
18 CH3OUT-B
M
(SPINDLE) CH3IN-B
17 CH3OUT-A
MUTE
S01
(LIMIT)
w w w
IC731
FOCUS/TRACKING/
SLED/SPINDLE SERVO,
RF AMP
58 VR RF SM 41
2 FIN 1 SLI 44
1
FIN 2 DEF 49
TES 36
HFL 37
3 E
4 F JP+ 33
JP- 32
CV+ 40
62
LDD
CV- 39
TOFF 35
SLOF 38
63 LDS DAT 52
CLK 50
CL 51
CE 53
TGL
34
3 16
FD
DRF 54
4
25 15 TO
SL+ 31
9 29 SLD
SL- 30
20 27 SPD
Q775
7
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y
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8
IC751
DIGITAL SIGNAL
PROCESSOR
10 EFMI LCHO 37
9 EFMO RCHO 40 R CH
1 DEF
Q774
16 TES
Q771
15 HFL MUTE
19 JP+
20
JP-
CLV+
12
13 CLV-
17 TOFF
24 RF GAIN XIN 45
X701
16.9344MHz
XOUT 44
56 COIN
61
4.2M
57 CQCK
54
RWC
18 TGL
Q Q
3 7 6 3
WRQ 53
SQOUT 55
PDO 3
D732
28 SHUTER IN/OUT
26 D_MUTE
27
LIMIT SW RES 58
u 1 6 3
.
20 20
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2 4
9 9 8
CD-L MAIN
A
SECTION
• R-CH is omitted due to same as L-CH
• Signal Path
: CD
IC601 (1/3)
CD CHANGER
1 5 1 5 0 8 9 2 4
CONTROL
IC711
73 CD MUTE
TABLE
CD NUMBER SENSOR 71
SENSOR
CD BUSY 70
(PIC UP/DOWN)SW
69 WRQ
99 SQOUT
CD OPEN 80
CD CLOSE 67
IC701
CD MOTOR+ 4 9 4
MOTOR
M
DRIVER
CD MOTOR- 5 7 2
76
CD RESET
98 COIN
100 SQCK
6 CD RWC
68 CD DRF
74
CD SLED(+)
75 CD SLED(-)
m
c o
2
9 9
9 8 2 9 9
S711
(UP/DOWN)
S701
(OPEN/CLOSE)
M721
(TURN)