SD-AT100 (serv.man5). 4 - Schematic diagrams (72-94) - Sharp Audio Service Manual (repair manual). Page 18

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SD-AT100H
Figure 89 SCHEMATIC DIAGRAM (18/23)
7
8
9
10
11
12
• The numbers   
2 
  to  
  6 
 are waveform numbers shown in page 98.
2
3
P90  1 - C
TO DVD SERVO PWB
P90  1 - D
TO DVD SERVO PWB
P90  1 - E, 1 - G
TO DVD SERVO PWB
40 39 38 37 36 35 34 33 32 31 30
1
2
3
4
5
6
7
8
9
10 11
29 28 27 26 25 24 23 22 21
12 13 14 15 16 17 18 19 20
VSS
A4
A5
A6
A7
A8
VCC
A3
A2
A1
A0
NC
OE
RAS
UCAS
WE
LCAS
D9
D10
D11
D12
D13
D14
D15
D16
D8
D7
D6
D5
D4
D3
D2
D1
VSS
VCC
VSS
VCC
NC
NC
NC
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
LVL
RFOn
LPFO
PVREF
VCOREF
VCOF
PVDD
TESM9 
TEST2 
RFCD
RFDVD 
AVDD
RFCT
RFZI
TEZI
AWIN
AVSS
FEI
TEI
RFRP
AVSS
TESM10
EXTAD
VREF
FOO
TRO
AVDD
AWCTL
FMO
DMO
TEBC
NC(FEBC)
DPDC
EQBC
ANMON
/DFCT
VRCK
VSS3
SCD
SCL
SCB
FGIN
1
2
3
4
5
6
7
ASLCN
ASLCO
DACVSS
DACVDD
RO
DVR
LO
8
9
10
11
12
13
14
15
DACVSS
XVSS
XI
XO
XVDD
TESM0
TESM1
TESM2
16
17
18
19
20
21
22
23
24
25
26
27
28
VDD3
VSS3
VPFC
TEST0
VLPFI
VLPFO
VSS3
MON0
MON1
MON2
MON3
MON4
MON5
29
30
31
32
33
34
35
36
37
MON6
MON7
MON8
MON9
VDD3
NC
NC
TEST1
FLGA
38
39
40
41
42
43
44
FLGB
VSS3
/RST
/MA 
/MRD
/MWR
/MCE
55
54
53
52
51
50
49
48
47
46
45
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
VDD5
NC
67
66
65
64
63
62
61
60
59
58
57
56
NC
SMCK
VMCK
VDD3
PD0
PD1
VSS5
PD2
PD3
PD4
VSS3
PD5
76
75
74
73
72
71
70
69
68
PD6
PD7
PD8
/PSYC
/PDRQ
PDCK
VDD5
TESM3
DIGI
84
83
82
81
80
79
78
77
TESM4
VDD3
BA0
BA1
BA2
BA3
VSS5
BA4 
88
87
86
85
BA5
BA6
BA7
BA8
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
/BCASL
/BWE
BD11
BD10
BD9
BD8
VSS3
BD7
BD6
BD5
BD4
BD3
BD2
BD1
BD0
VDD5
/BCAS
/BRAS
/BOE
VDD3
117
116
115
114
113
112
111
110
109
PLCK
VDD3
NC
NC
BD15
BD14
BD13
VSS5
BD12
129
128
127
126
125
124
123
122
121
120
119
118
PDOP1
PESP
PVSS
PESV
PPW
CFC2
CFC1
VSS3
TESM8
TESM7
TESM6
TESM5
132
131 130
PDON2
PDOP2
PDON1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
25
26
24
27
28
29
30
32
33
31
34
35
36
37
39
40
38
41
42
43
44
46
45
ASLCO
/SRV_RST
/MA
/RD
/WR
/SRV_CS
/SRV_INT
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
SD0_I
SD1_I
SD2_I
SD3_I
SD4_I
SD5_I
SD6_I
SD7_I
/ERR_I
/SOSO_I
/SVAL_I
SDCK_I
DADR0
DADR1
DADR2
DADR3
DADR4
DADR5
DADR6
DADR7
DADR8
OE
RAS
UCAS
LCAS
WE
DDAT0
DDAT1
DDAT2
DDAT3
DDAT4
DDAT5
DDAT6
DDAT7
DDAT8
DDAT15
DDAT14
DDAT13
DDAT12
DDAT11
DDAT10
DDAT9
DDAT8
DADR8
DADR7
DADR6
DADR5
DADR4
DADR3
DADR2
DADR1
DADR0
DDAT7
DDAT6
DDAT5
DDAT4
DDAT3
DDAT2
DDAT1
DDAT0
RAS
WE
LCAS
UCAS
OE
DDAT9
DDAT10
DDAT11
DDAT12
DDAT13
DDAT14
DDAT15
SDCK_I
/SVAL_I
/SOSO_I
/ERR_I
SD0_I
SD1_I
SD2_I
SD3_I
SD4_I
SD5_I
SD6_I
SD7_I
SDCK_I
/SVAL_I
/SOSO_I
/ERR_I
SD0_I
SD1_I
SD2_I
SD3_I
SD4_I
SD5_I
SD6_I
SD7_I
/SRV_INT
/SRV_CS
/SRV_RST
/WR
/RD
/MA
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
/SRV_INT
/SRV_CS
/SRV_RST
/WR
/RD
/MA
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
TE
LVL
RFRP
TE
LVL
RFRP
CHOP
DVD_L
MUTE
CHOP
DVD_L
MUTE
IN_SW
LD_RVS
LD_FWD
IN_SW
LD_RVS
LD_FWD
D_3.3V
A_3.3V
A_5V
D_5V
AT_8V
D_GND
M_GND
A_GND
CAM_SW
DISC1_SW
DVD_FUNC
CAM_SW
DISC1_SW
DVD_FUNC
133
LPFN
176
ASLCP 
45  
/MINT
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
R3753
330K
C3746
0.1
C3757
0.1
C3756
0.1
C3759
0.1
C3758
0.1
C3751
0.001
IC3701
TC94A03F
SERVO ECC
C3747
0.1
R3744    47K
R3739
4.7K
R3740    47K
720
068
C3731
0.001
R3728
330
R3725
1K
R3754
1M
IC3702
IX0447AW
4M EDO
PAGE MODE RAM
C3744
0.1
C3742
0.1
R3755
470
FL3701
22.5792MHz
C3748
0.01
C3749
0.01
R3760
1K
R3759
1K
R3757
10K
R3758
10K
C3753
0.1
C3752
0.1
C3750
0.1
R3756
10
R3750
150K
R3743
1.5K
R3745
10K
R3738    33K
R3746
100K
R3742     33K 
C3741
0.01
R3748
33K
R3721
2.2K
718
15
R3724
100K
C3735
0.01
C3730
0.1
4
3
3
5
R3717
18K
C3729
0.0047
R3727
330
C3734
560P
C3728
220P    
(CH)
R3729
39K
R3730    27K
R3731    27K
R3732
10K
R3734
10K
R3735
10K
R3736
10K
C3723
0.1
15 
R3718
150
R3719
150
R3720
150
C3732
0.1
C3733
0.1
Display
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