Sharp FO 4400 - B/W Laser - All-in-One Service Manual page 112

FO-4400U
FO-CS1
A
Main ASIC block
A[25:0]
( 1-6H)( 3-1A)
( 4-6A)( 5-4A)
( 7-5C)(11-6A)
(12-2F)
1
D[31:0]
( 1-6H)( 3-2A)
( 4-6A)( 5-4A)
( 7-4C)(11-6A)
(12-4D)(12-2D)
( 1-3H)( 4-2A)
( 7-3B)(11-3A)
D15
D14
D13
2
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
( 1-3H)( 7-3B)(11-5D)
( 1-3H)( 3-1A)( 4-5D)( 7-3B)(11-3A)(12-3A)
(12-1A)(12-5A)(12-5I) (11-4C)
(12-5A)(12-3A)
( 1-2B)( 3-1A)( 4-4A)( 7-3B)( 8-4H)(11-5H)
( 1-1B)
( 1-2H)( 7-3B)
( 1-5B)
( 1-5B)
3 ( 1-5B)
( 1-5B)
( 1-3H)
( 1-2H)(11-4D)
( 1-5B)
( 1-2H)
( 1-1H)
( 1-5B)
( 1-2H)
( 1-1H)
( 3-3A)( 4-4A)( 5-4A)(12-3E)
( 3-3A)( 4-4A)( 5-4A)(12-3I)
( 3-3A)
4
( 4-4A)
( 5-4A)
(12-3I)(12-1A)
(12-5E)
( 4-5G)
( 4-5G)(12-5E)
( 4-5G)(12-5E)
( 4-5G)
(12-5E)
( 4-5G)(12-6E)
( 4-5G)(12-6E)
( 3-1A)
( 3-3A)
( 4-5G)
5
(12-5E)
(10-3E)
( 5-4A)
(12-3E)
( 3-3A)
6
A
B
A25 184
A24
185
A23
186
A22
187
A21
188
A20 189
A13
190
A12
191
A11
192
A10
193
A9
194
A8
195
A7
196
A6 197
A5
200
A4
201
A3
202
A2
203
A1 204
TP17
205
TP27
168
/WE0
206
208
209
210
211
212
213
214
215
/BS
183
RD/WR
182
CKCSMS
179
/OPDEN
R255 207
/RESET
169
N.M.
MANRES
170
/WAIT
30
C191 1000p
/IRL0 DG
23
/IRL1
24
/IRL2
25
/IRL3
26
C234
N.M.
/CS0J DG
10
/CS4
11
C216
N.M.
/DREQ0 DG TP37
16
/DACK0
12
/DRAK0
14
/DREQ1 TP38
17
/DACK1
13
/DRAK1
15
R274 10K
48
+3.3V
R278 10K
49
R275 10K
50
R279 10K
51
/IOWR R253 33
28
/IORD R285 33
29
/NICACKF TP49
56
R276 10K
53
+3.3V
R280 10K
52
/PGMCS R254 33
27
/MDMCS0 R221 33
35
/MDMCS1
34
TP58
20
R222
N.M.
/NANDOPCS R233 33
171
/NANDSTDCS R232 33
172
/NANDRD R224 33
173
/NANDWR R223 33
174
/WP0 TP73
175
/WP1 TP76
176
CLEO TP79
178
ALEO TP80
177
/SGACS R277 33
47
R246 10K
60
+3.3V
R247 10K
59
/NICCSF R245 33
58
+3.3V
+3.3V
R248 R270 R251 10K
31
10K 10K R271 10K
45
R272 10K
44
/BUSYSTD
21
/BUSYOP
22
/NICINTF
57
MDMINT0
33
MDMINT1
32
/SGAINT
46
DG DG
+3.3V
B
A25
A24
A23
A22
A21
A20
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
XLBE
XWE0
D15
D14
D13
D12
D11
D10
D9
D8
2
D7
3
D6
4
D5
5
D4
6
D3
7
D2
8
D1
9
D0
XBS
RXW
SHCK
XOPDEN
XRESET
XMANRES
XWAIT
MAIN ASIC
XINT0
XINT1
XINT2
XINT3
LC272D0BT-WA6 (CSMS)
XCS0
XCS4
XDREQ0
XDACK0
XDRAK0
XDREQ1
XDACK1
XDRAK1
JBGDREQ00
JBGDREQ01
JBGDREQ10
JBGDREQ11
XWROUT
XRDOUT
XNICACK
XJBIGACK0
XJBGACK1
XPGMCS
XMDMCS0
XMDMCS1
XFLCS
XNANDOPCS
XNANDSTDCS
XNANDRD
XNANDWR
XWP0
XWP1
CLEO
ALEO
XSBGA
XJBG0
XJBG1
XNICCS
XBUSYDP
XJBGINT0
XJBGINT1
XFLSHINTA
XFLSHINTB
XNICINT
XMDMINT0
XMDMINT1
XSGAINT
C214 0.1u
C210 0.1u
C209 0.1u
C207 0.1u
C206 0.1u
C205 0.1u
C184 0.1u
C183 0.1u
C143 0.1u
C187 0.1u
C189 0.1u
C148 0.1u
C188 0.1u
C190 0.1u
C215 0.1u
6 – 3
C
IC6
R160
X1
24.3200MHz
1
C144
12p
DG
C
D
110
TEST0
111
TEST1
115
TOUT
DG
130
PLTSW
131
BKLON
TP19
140
LD15
TP20
141
LD14
TP21
142
LD13
TP22
143
LD12
TP23
146
LD11
TP24
147
LD10
TP25
148
LD9
TP26
149
LD8
150
LD7
151
LD6
152
LD5
153
LD4
154
LD3
155
LD2
156
LD1
157
LD0
139
SEN0
138
SEN1
137
SEN2
136
SEN3
135
SEN4
134
SEN5
133
SEN6
132
SEN7
TP28
167
CRNT1
TP29
166
CRNT0
TP30
161
TXA
TP31
164
TXAI1
TP32
160
TXBI0
TP33
165
TXAI0
TP34
159
TXBI1
TP35
158
TXB
41
TODB
42
HSYNC
43
PDATA
84
DQMUL
83
SDCLK
85
CKE
86
CASB
87
RASB
88
DWEB
89
XCSDRM0
92
MA0
93
MA1
94
MA2
95
MA3
96
MA4
97
MA5
98
MA6
101
MA7
102
MA8
103
MA9
104
MA10
105
MA11
106
MA12
107
MA13
TP41
61
MAD0
TP43
62
MAD1
TP45
65
MAD2
TP46
66
MAD3
TP47
67
MAD4
TP48
68
MAD5
TP50
69
MAD6
TP52
70
MAD7
TP54
71
MAD8
TP55
74
MAD9
TP56
75
MAD10
TP57
76
MAD11
TP59
77
MAD12
TP62
78
MAD13
TP64
79
MAD14
TP67
80
MAD15
+3.3VR
C146
0.1u
1
120
AVDD
126
AVDD
CE4
10u/16V
121
AVSS
R164
127
AVSS
C602 RAG
0.01u-K
125
ATAPH
122
ADREFL
123
TEMP
TP89
124
AVO
TP95
117
SAMP
TP98
116
LININT
TP99
119
CLK1
TP100
118
SH
1M R249 1M
R161 R250
560 X3 220
34.3892MHz
2 1 2
C145 C232 C213
12p 15p 12p
DG DG
D
MA
MA
MA
MA
MA
MA
MA
MA
MA
MA
MA
MA
MA
MA
0 (