Sharp DX-SX1H Service Manual page 26

DX-SX1H
P26 P27 P28
A
PICKUP UNIT
ACTUATOR
Fo+
Tr-
Tr+
Fo-
LD
PD
VA
VB
B
VC
VD
V/2
VDD
Gnd
HOLOGRAM
LASER UNIT
(DVD)
Gnd VDS
OSC
VDD
VA
VB
VC
VE
VF
V/2
C
Gnd
LD
PD
HOLOGRAM
LASER UNIT (CD)
M
SLED MOTOR
D
E
M
SPINDLE MOTOR
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 41.
1
SACD PWB-C(2/2)
CD SIGNAL
FLEXIBLE
PWB CNS501
TR+ 3.5V
1 1
FO+
3.5V
2 2
TR- 3.5V
3 3
FO- 3.5V
4 4
VCC R501
4.9V
5 5
G_SW 1K
4.9V
6 6
GND 0V
C507
7 7
LD 1
1.0V
8 8
VS
2.0V
9 9
VR
0V
10 10
PD
0V
11 11
VC
2.0V
12 12
VA
2.0V
13 13
GND
0V
14 14
VB
2.0V
15 15
VD
2.0V C503
16 16
1
VOSC 0.3V
17 17
GND(NC)
0V
18 18 C504
VS
2.0V
1
19 19
VCC
4.9V C505
20 20
1
GND 0V
21 21
C506
LD
1.5V
22 22
1
VC
2.0V
23 23
VR 0V
24 24
PD
0V
25 25
VA 0V
26 26
VE
2.0V
27 27
GND 0V
28 28
VF
2.0V
29 29
VB 2.0V
30 30
D504
RB521S30
D502
RB521S30
C508
CNP501
C502
0.0047
(M_A0) 0.0047
1 1
(M_B0)
2 2
(M_A1)
3 3
(M_B1)
4 4
PWB
STEPPING MOTOR DRIVER
C509
0.0047
5.0V
C501
0.0047
D501
D503
+B
RB521S30
RB521S30
CNS502
(M_H-)
5.8V
1
(M_H3-)
5.8V
2
5.8V (M_H3+)
3
(M_H2-)
5.8V
4
(M_H2+)
5.8V
5
(M_H1-)
5.8V
6
5.8V (M_H1+)
7
(D_5V_R502) +B
6.0V
8
(M_U)
0.6V
R502
9
(M_V)
0.4V 150
10
(M_W)
0.8V
11
PICKUP IN SENSOR PWB-D3
PH51
PUCKUP IN
SENSOR
TRAY SENSOR PWB-D1
PH52
SPEED
SENSOR
PH53
OPEN
SENSOR
SW51
PLAY
SW52
STOP
MODE SWITCH PWB-D2
2 3
Figure 26 SCHEMATIC DIAGRAM (9/11)
SEL_1 SEL_2 GAIN
H L -2dB
H +2dB
L
+6dB
H H
DTC144 EK
R50A
TP504 TP505
1
TP515
TP514
R528
1
C511
+B
R503 0.1
2.7
+B TP501
12 11 10 9 8 7 6 5 4 3 2 1
PG-B VMB
B REF M2 M1 CK1
MO
B
NFB VCC
IN
IC503
TB6504F
RESET OSC
NFA CW/
ENABLE
A PGA A VMA S-GND
CCW CK2
13 14 15 16 17 18 19 20 21 22 23 24
0.1V
C510
47/10
R507
1K
M_H-_R520
R520
150
C513
0.01
C514
0.01
C515
0.01
+B
+B
M703
LOADING MOTOR
M (+)
(-)
(M_LD+)
3.5V
1
1
(M_LD-)
3.5V
2
2
CNP502
CNP503
CNS51A
VCC
5.0V
1 1 1 1
3.8V GND
2 2 2 2
IN_SW
5.0V
3 3 3 3
CNS51B
CNS52B
GND_SP
4.8V
1 1 1 1
SP_SW
0V
2 2 2 2
5.0V
3
3 3 3
GND _EJ
3.8V
4 4 4 4
EJ _SW
4.3V
5
5 5 5
CNP504 LD_SW
CNS52A
CNP53 CNS53B
(MECSW1)
5.0V
1 1 1 1
M_GND
0V
2 2 2 2
MECSW2
4.2V
3
3 3 3
CNS53B CNP505
4
– 26 –
Q501
R521 R542
2SA1037 KR
47 47
R527
C523
R519
47
47/10
4.7K
C527
C516 0.01
R518
D505
0.01
2.2K
R529
3 DAP202K
2
470
Q502
1
IC501
R530
2.0V
TA1244FN
39K
e_IN
1
MIX_OUT
0V
C525
R522
2 GND
MIX
0.1
(GAIN0) 5.6K 0V
MIX_IN
S/DUAL
3
(+10dB)
C526
R531 2.0V a_IN
0.1
4
39K
R536
2.0V b_IN
5
39K
2.0 V C_IN
R532 6
39K 2.0V
d_IN a_OUT
7
R533
2.0V b_OUT
VREF
39K
8
IN
R534
c_OUT
1.0 V f_IN
39K
9
1.0 V
(GAIN1) C519 d_OUT
GAIN
C524
10
0.1 0.1 SEL_1
R523
e_OUT
4.8 V
11 VCC1
5.6K
(GAIN2) f_OUT
C520 3.8 V
GAIN
12
0.1
R524 SEL_2
5.6K
C528
47/6.3
IC501 :I/V CONVERTER AMP.
IC504
IX2842AF
SPINDLE MOTOR DRIVER
+B
C570
C571
0.1
0.1
C517
R550
0.1
1.5
R551
1.5
R537
1.5
28 27 26 25 24 23 22 30 21
1 2 3 4 5 6 7 29 8
+B
TP502
TP503
+B
+B
R511
330
14 13 12
R510
47K
15 16 17 18 19 20 21 29 22 23 24 25 26 27 28
R505
330
R506
R512
330
47K
R513
47K
+B
5
+B
+B
+B
C529
47/10
L501
10µH
C5
0
R563
R545
10K
470
0V
GND
24
2.0V
23
22
3.3V
RF_N
21
2.1 V
20 2.1 V
RF_P
48 V
19
VCC2
2.0 V
18
2.0 V
17
2.0 V
16
2.0 V
15
2.0 V
14
2.0 V
13
+B
C535
0.1
+B
20 19 18 17 16 15
9 10 11 12 13 14
C530
0.0022
R540
4.7K
R544
10K
11 10 9 8 30 7 6 5 4 3 2 1
R535
100
R598
C521
10K
0.01
+B
R525
100
+B
6