Sharp FO 4400 - B/W Laser - All-in-One Service Manual page 113

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E
+3.3V
110
ST0
111
ST1
115
OUT
DG
130
TSW
131
LON
TP19
140
D15
TP20
141
D14
TP21
142
D13
TP22
143
D12
TP23
146
D11
TP24
147
D10
TP25
148
LD9
TP26
149
LD8
150
LDM7
LD7
LDM6
151
LD6
LDM5
152
LD5
LDM4
153
LD4
LDM3
154
LD3
155
LDM2
LD2
LDM1
156
LD1
LDM0
157
LD0
139
EN0
138
EN1
137
EN2
136
EN3
135
EN4
134
EN5
133
EN6
132
EN7
TP28
167
NT1
TP29
166
NT0
TP30
161
TXA
TP31
164
AI1
TP32
160
BI0
TP33
165
AI0
TP34
159
BI1
TP35
158
TXB
41
ODB
42
YNC
R281
33
43
ATA
R204
33
84
MUL
R209
0
83
SDCLK
CLK
R210
33
85
CKE
86
ASB
87
ASB
88
WEB
89
RM0
92
MA0
MA0
MA1
93
MA1
MA2
94
MA2
MA3
95
MA3
MA4
96
MA4
MA5
97
MA5
MA6
98
MA6
MA7
101
MA7
MA8
102
MA8
103
MA9
MA9
MA10
104
A10
MA11
105
A11
MA12
106
A12
MA13
107
A13
TP41
MD0
61
AD0
TP43
MD1
62
AD1
TP45
MD2
65
AD2
TP46
66
MD3
AD3
TP47
MD4
67
AD4
TP48
MD5
68
AD5
TP50
MD6
69
AD6
TP52
MD7
70
AD7
TP54
71
MD8
AD8
TP55
MD9
74
AD9
TP56
MD10
75
D10
TP57
MD11
76
D11
TP59
MD12
77
D12
TP62
78
MD13
D13
TP64
MD14
79
D14
TP67
MD15
80
D15
+3.3VR
+3.3V
C146
L100
0.1u
1
2
120
0 (1608/2125)
VDD
126
VDD
CE4
10u/16V
121
VSS
R164
0
127
VSS
DG
C602
RAG
0.01u-K
125
APH
122
EFL
123
EMP
TP89
124
AVO
TP95
117
AMP
TP98
116
NT
TP99
119
LK1
TP100
118
SH
R249
1M
R250
X3
220
34.3892MHz
1
2
C232
C213
15p
12p
DG
R118
0
DG
E
( 2-5F)
CLK1
SH
( 2-5F)
PLTSW
( 9-2A)
BKLON
( 6-1G)
+3.3V
SEN[7:0]
SEN0
SEN1
SEN2
SEN3
SEN4
SEN5
SEN6
SEN7
ENA
( 6-5C)
ENB
( 6-5C)
TXPA
( 6-5C)
TXA1
( 6-5C)
TXB0
( 6-5C)
TXA0
( 6-5C)
TXB1
( 6-5C)
TXPB
( 6-5C)
/PDATAF
( 3-3E)
DQMUL
SDCKE
/CAS
/RAS
DG
/DWE
/CSDRM0
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MA13
MA12
MA10
MA0
MA1
MA2
MA3
IC5 SDRAM
MT48LC4M16A2TG-75/
W986416DH-7
CLK1
(2-1F)
SH
(2-1F)
R109
0
D102
DA204K
+3.3VR
RAG
+5V
+5VR
R115
10
C105
+
0.1u
R116
0
RAG
DG
RAG
F
IC2
6
14
1A3
1Y3
8
12
1A4
1Y4
2
18
1A1
1Y1
4
16
1A2
1Y2
11
9
2A1
2Y1
13
7
2A2
2Y2
15
5
2A3
2Y3
17
3
2A4
2Y4
20
VCC
1
1G
19
10
2G
GND
DG
74HCT244 (TSSOP)
DG
LDM[7:0]
LDM0
LDM1
LDM2
LDM3
LDM4
LDM5
LDM6
( 9-3A)
LDM7
DG
+3.3V
IC14A
R269
33
2
1
C186
C229
74LV14A
74LV14A
N.M.
DG
DG
MA[13:0]
C179
C182
C181
C178
C180
1
Vcc1
R191
33
TP60
2
DQ0
3
VccQ1
R192
33
TP63
4
DQ1
R193
33
TP65
5
DQ2
6
VssQ1
R194
33
TP69
7
DQ3
R195
33
TP71
8
DQ4
9
VccQ2
R196
33
TP74
10
DQ5
R197
33
TP77
11
DQ6
12
VssQ2
R198
33
TP81
13
DQ7
14
Vcc2
15
DQML
R150
33
16
WE
R153
33
17
CAS
R151
33
18
RAS
R152
33
19
CS
R155
0
TP83
20
A13
R154
0
TP85
21
A12
R100
0
TP87
22
A10
R101
0
TP90
23
A0
R102
0
TP92
24
A1
R103
0
TP93
25
A2
R105
0
TP96
26
A3
27
Vcc3
C141
C140
C139
C142
+5VR
IC1
AD8051A
R114
C103
0.1u
R112
8
3
NC
+
6
0
5
2
NC
-
1
NC
N.M.(2SA1037KR)
RAG
C104
18p
R111
1.5K
R110
3K
CE1
100u/16V
RAG
F
6 – 4
G
CISCLK
R170
470
L104
0
( 9-5D)
CISSI
( 9-6D)
R62
100
LEDEN2
( 9-2E)
LEDEN1
( 9-2E)
R168
270
RS
( 9-1A)
R167
270
E
( 9-1A)
+5V
R166
C150
4.7K
0.1u
DG
DG
IC7
R175
270
17
3
LD0
2A4
2Y4
R231
270
LD1
15
5
2A3
2Y3
R230
270
LD2
13
7
2A2
2Y2
R229
270
LD3
11
9
2A1
2Y1
R228
270
LD4
2
18
1A1
1Y1
R227
270
4
16
LD5
1A2
1Y2
R226
270
LD6
6
14
1A3
1Y3
R225
270
LD7
8
12
1A4
1Y4
20
+5V
VCC
C151
1
0.1u
1G
19
10
2G
GND
74HCT244 (SOP)
DG
DG
R273
N.M.
+3.3V
IC14B
R282
0
4
3
C231
N.M.
DG
DG
MD[15:0]
+3.3V
1u
1u
1u
1u
2.2u (2012)
54
Vss3
TP61
R203
53
DQ15
52
VssQ4
TP66
R202
51
DQ14
TP68
R201
50
DQ13
49
VccQ4
TP70
R200
48
DQ12
TP72
R159
47
DQ11
46
VssQ3
TP75
R158
45
DQ10
TP78
R157
44
DQ9
43
VccQ3
TP82
R199
42
DQ8
41
Vss2
40
N.C.2
39
DQMU
38
CLK
37
CKE
36
N.C.1
TP84
R156
35
A11
TP86
R205
34
A9
TP88
R206
33
A8
TP91
R207
32
A7
TP97
R208
31
IC5
A6
TP94
R107
30
A5
TP101
R106
29
A4
28
Vss1
C185
N.M.
2.2u (2012)
1u
1u
1u
DG
+5VR
R113
N.M.
AO
Q101
( 9-6D)
B
D100
DA204K
+5VR
RAG
RAG
G
FO-4400U
FO-CS1
H
2/12
1
LD[7:0]
( 9-3E)
2
/TODF
( 9-2I)
/HSYNCP
(10-5E)
/HSYNC
( 9-6I)
3
33
MD15
33
MD14
33
MD13
33
MD12
4
33
MD11
33
MD10
33
MD9
33
MD8
0
MA11
0
MA9
0
MA8
0
MA7
0
MA6
0
MA5
0
MA4
5
6
H

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