Sharp XL-70 Service Manual page 23

701 LCD DISPLAY
5 ~ 38
6 95 94 93 92 91 90 89 88 87 86 85 84 83 82
IC701
IX0026SJ
YSTEM CONTROL
ICROCOMPUTER
0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
+5V
IC804
Q861 CD_6.2V
LA6541D
FOCUS/
TRACKING/
SPIN/SLED
DRIVER
81 80 79 78 77 76
75
SEG25
74
SEG26
73
SEG27
72
SEG28
71
SEG29
70
SEG30
69
SEG31
68
SEG32
67
SEG33
66
CCE
BUCK 65
64
BUS3
BUS2 63
62
BUS1
BUS0 61
CD_STB 60
CD_RES 59
PU_IN 58
CLID_DW
57
CLID_UP 56
MVOL_DW 55
54
MVOL_UP
MVOL_IND 53
52
NC
BACK LIGHT
51
M_GND
15 14 13 12 11 10 9 8 7 6 5
+ - - +
REG.
- -
+ +
IC804
LA6541D
+
+
- -
RESET
+ -
- +
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
M_GND
IC801
TA2109F
SERVO PRE AMP.
SBAD
TEI
TEO
13 SBAD 12
FEI
TEN
14 FEO 11
2VRO
15 FEN 10
TEBC
16 VRO TEB
9
RFRP SEL
SEL
17 RFRP 8
LDO
18 RFIS 7
RFI
19 RFGO MDI 6
E
RFGC
20 TN1
RFGC 5
F
21 TPI 4
AGCI
B
22 FPI
RFO 3
A
23 FNI 2
GND
CD +5V
24 VCC 1
RFN
D_GND
Figure 23 BLOCK DIAGRAM (4/4)
IC702
TA7291S
LOADING MOTOR DRIVER
1 2 3 4 5
NC
MVOL_DW
D_GND
MVOL_UP
M_12V
CD_6.2V
4 3 2 1
CD_6.2V
SWITCHING
D-GND
+5V
Q801
VREF
+5V
– 23 –
6 7 8 9
M701
JOG MOTOR
2
2
M
1
1
CNP705
CNS705
SP+
6
SP-
5
SL+
4
SL-
3
PU-IN
2
M_GND
1
CNS803
CNS801
PICKUP UNIT
TR-
TR-
1 1 1
TR+ TR+
2 2 2
FO+ FO+
3 3 3
FO-
FO-
4 4 4
GND
5 5 5
PD
P
6 6 6
V
VR
7 7 7
LD LD
8 8
8
CNS802
C
C
1 1 1
F
F
2 2 2
B
B
3
3 3
A
A
4 4 4
E
E
5
5 5
1/2V 1/2V
6 6 6
+5V
+5V
7 7 7
XL-70/70C
CL ID_DW
13
CLID_UP
12
CLID_PRO
11
CL ID_SW
10
CD_RES
9
CCE
8
BUCK
7 TO CD PWB
BUS3
6
BUS2
5
BUS1
4
BUS0
3
CD_STB
2
PU_IN
1
CNS702
TAPE_SW
11
A_12V
10
M_12V
9
D_GND
8
U_CON5V
7
SOL
6
MOT
TO MAIN
5
PWB
REC
4
RUN_PLS
3
BIAS
2
B_CAN
1
CNS703
9
SD
STEREO
DO
CL
CE
TO MAIN
PWB
DI
CD+B
P_MUTE
P_STB
1
CFW704
CNP702
CL ID_DW
13
CLID_UP
12
CLID_PRO
11
CL ID_SW
10
CD_RES
9
CCE
8
BUCK
7
FROM
BUS3
6
DISPLAY PWB
BUS2
5
BUS1
4
BUS0
3
CD_STB
2
PU_IN
1
CL ID_L
1
A_GND
2
CD_R
3
M_GND
4
TO MAIN PWB
M_12V
5
D_GND
6
CD_6.2V
7
CNS605
+
NM802
SP+
M
6 6 SPINDLE
-
SP-
MOTOR
5 5
SL+
4 4
+
NM801
SL-
M
3 3
SLED
PU-IN -
MOTOR
2 2
GND
1 1
NSW801
PICKUP IN
CNP803
TR-
TR+
FO+
FO-
ACTUATOR
1/2VCC
C
F
B
A
E
GND
MON
LD
VCC