Read Sharp AR-M276 (serv.man5) Service Manual online
AR-M236/M276/M237/M277 CIRCUIT DIAGRAM (MCU PWB) 3 - 4
/PB
/FAXREQ
1
/RD
/ESCS
0
/ESAC
K
0
/ESPRD
/LDON
/f1
/INTR
/CPUSYNC
/DATCK
/ESRE
Q
1
/FAXCS0
/SCANSP
CPUCLK
/SAM
P
/OB
/SCANST
ADSD
/VIDEO
/REFCK
/LWR
/f2
/FR
ADWRT
/PRSTART
/T
RANSST
/SHASIC
CCDD[7..0]
/SCANST
SHSEL
/DUMC
/MRESET
SFCLK
/MRES
SFCLK
/PCL
CS0
/PCL
ACK
0
/PCL
PRD
/FAXPRD
/FAXAC
K
0
/DUM
ACK
ADSCLK
/SH
/SYNC
G3.3V
3.3V
3.3V
G3.3V
3.3V
3.3V
G3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
G3.3V
3.3V
3.3V
R112
47k
C
162
100p
R240
100
100
R123
47k
47k
R122
47k
NF102
ZJSR5101-223
R140
0
R154
0
+
C122
47u/16V
R239
NP(0)
NP(0)
TP102
1
1
TP101
1
1
TP100
1
1
C
234
1000
p
R
124
10
R
126
10
R
125
10
R
241
1k
R
202
47k
R503
NP(0)
NP(0)
TP511
1
1
TP503
1
1
TP504
1
1
TP505
1
1
TP506
1
1
TP507
1
1
TP508
1
1
TP509
1
1
TP502
1
1
TP510
1
1
NB131
1
NB144
1
NB137
1
NB148
1
NB150
1
NB151
1
NB153
1
NB167
1
NB168
1
NB157
1
NB158
1
NB159
1
NB161
1
NB163
1
NB165
1
NB169
1
NB172
1
NB174
1
NB176
1
NB178
1 NB180
1
NB182
1
NB192
1
NB195
1
NB197
1
NB202
1
NB243
1
NB242
1
NB193
1
NB149
1
N
B
235
1
N
B
215
1
N
B
225
1
N
B
232
1
N
B
236
1
N
B
216
1
N
B
226
1
N
B
233
1
N
B
237
1
N
B
217
1
N
B
205
1
N
B
218
1
N
B
227
1
N
B
207
1
N
B
198
1
N
B
199
1
N
B
208
1
N
B
200
1
N
B
201
1
N
B
209
1
N
B
240
1
NB238
1
NB105
1
NB109
1
NB118
1
R
553
33
R
554
33
N
B
658
1
C516
NP(1000p)
C
517
N
P
(2200p)
NB670
1
NB669
1
C
126
22000
p
C
225
0.
1u
IC103
NC7S32M5X
NC7S32M5X
1
2
4
5
3
C
264
0.
1u
+
C
145
47u/
16V
C
258
0.
1u
C
222
0.
1u
C
229
0.
1u
C
260
0.
1u
FB101
IC202
74VHC164AM
A
1
B
2
CLK
8
CLR
9
QA
3
QB
4
QC
5
QD
6
QE
10
QF
11
QG
12
QH
13
VCC
14
GND
7
IC107
HG73C079H02FD
BDO
UTD6
BDO
UTD7
89
BDO
UTD8
90
BDO
UTD9
91
BDO
UTD1
0
92
BDO
UTD1
1
93
BDO
UTD1
2
94
VCC
95
BDO
UTD1
3
96
BDO
UTD1
4
97
VSS
98
BDO
UTD1
5
99
VSS
100
LD
101
VSS
102
APCHOL
D
103
PRINTAREAEN
104
VCC
105
VSS
106
NC(ST
)
107
VCC
108
NC(SW
)
109
TEST2
110
VSS
111
FAXCS0
112
FAXR
E
Q
1
113
FAXACK0
114
FAXPRD
115
ESC
S
0
116
ESREQ1
117
ESA
C
K
0
118
ESPRD
119
PCL
CS0
120
VCC
121
PCL
ACK0
122
PCL
PRD
123
VSS
124
BDIN0
125
BDIN1
126
BDIN2
127
BDIN3
128
BDIN4
129
BDIN5
130
BDIN6
131
BDIN7
132
VCC
133
BDIN8
134
BDIN9
135
VSS
136
SFCLK
137
DUMC
153
PB
152
OB
151
DUMMY
150
VSS
149
VSS
148
VCC
147
VCC
146
BDIN15
145
BDIN14
144
BDIN13
143
BDIN12
142
BDIN11
141
BDIN10
140
SYNC
139
VSS
138
ADWRT
168
ADSD
167
VSS
166
F1
165
VSS
164
SH
163
VSS
162
F2
161
VSS
160
REFCK
159
VSS
158
DATCK
157
VSS
156
FR
155
VCC
154
IDIN3
182
IDIN4
183
dmypclksw
184
VCC
185
VSS
186
CPUCLK
187
VSS
188
CPUWR
189
CPURD
190
RESET
191
PRINTST
192
IDIN2
180
IDIN6
179
IDIN1
178
IDIN7
177
IDIN0
176
VSS
175
dmypclk
174
VCC
173
VCC
172
VSS
171
ADSCLK
170
ADCK
169
IDIN5
181
VSS
200
VSS
199
VSS
198
VCC
197
TR
AN
SST
196
RECEPT
S
T
195
SCANSP
194
SCANST
193
CPUAD4
230
CPUAD5
229
CPUAD6
228
CPUAD7
227
VSS
226
VSS
225
VCC
224
VCC
223
VSS
222
VSS
221
CPUSYNC
220
CPUINT
R
219
CPUDT
0
218
CPUDT
1
217
CPUDT
2
216
CPUDT
3
215
CPUDT
4
214
VSS
213
CPUDT
5
212
CPUDT
6
211
VCC
210
CPUDT
7
209
CPUDT
8
208
CPUDT
9
207
CPUDT
1
0
206
CPUDT
1
1
205
CPUDT
1
2
204
CPUDT
1
3
203
CPUDT
1
4
202
CPUDT
1
5
201
CPUAD1
CPUAD2
232
CPUAD3
231
C
265
0.
1u
C
231
0.
1u
C
257
0.
1u
C
160
0.
1u
C
120
0.
1u
C
223
0.
1u
C
255
0.
1u
C
142
0.
1u
FB104
IC117D
74LVX08MTC
12
13
11
14
7
C
286
0.
1u
C
249
0.
1u
C
259
0.
1u
C144
12p
12p
B
R
115
47kx4
1
8
2
7
3
6
4
5
X100
OSC51(32MHz)
/CONT
1
OUT
3
VDD
4
GND
2
C
125
0.
1u
X102
OSC51(56.32602MHz)
/CONT
1
OUT
3
VDD
4
GND
2
C
287
0.
1u
C
230
0.
1u
C
248
0.
1u
C
268
0.
1u
C
124
12p
C
221
0.
1u
C
143
22000p
IC106
NC7S08M5X
NC7S08M5X
1
2
4
5
3
FB102
C
251
0.
1u
C121
0.1u
C
253
0.
1u
C
224
0.
1u
C
228
0.
1u
FB100
FB105
MEM2012T101R
C
263
0.
1u
C
256
0.
1u
C
250
0.
1u
C
227
0.
1u
C
267
0.
1u
R111
47k
47k
C
261
0.
1u
C
262
0.
1u
C
235
0.
1u
C
254
0.
1u
IC
117C
74LV
X
08M
TC
9
10
8
14
7
FB103
C
226
0.
1u
C
252
0.
1u
C
233
0.
1u
NF101
ZJSR5101-223
NF100
ZJSR5101-223
R580
470
470
674
R581
470
NB675
1
MEMD
A7
MEMD
A8
MEMD
A9
MEMD
A10
MEMD
A11
MEMD
A12
MEMD
A13
MEMD
A14
MEMD
A15
(10-2E)
(3-1B
, 5-4B)
(3-1B)
(3-1B)
(1-3C)
(9-3B)
(2-1A)
(2-1A)
(2-1A)
(2-1A)
(2-1A)
(9-3B)
(9-2B)
GDATA3
GDATA2
GDATA1
GDATA0
GDATA2
GDATA1
GDATA0
GDATA7
GDATA6
GDATA5
GDATA4
GDATA6
GDATA5
GDATA4
GDATA9
GDATA8
GDATA8
GDATA15
GDATA14
GDATA13
GDATA12
GDATA11
GDATA10
GDATA14
GDATA13
GDATA12
GDATA11
GDATA10
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(2-3E)
(2-4D, 3-2B)
(3-2B)
(10-2D)
(10-2E)
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(9-3D)
(1-2A, 9-3E)
CCDD4
CCDD3
CCDD5
CCDD2
CCDD6
CCDD1
CCDD7
CCDD0
CCDD3
CCDD5
CCDD2
CCDD6
CCDD1
CCDD7
CCDD0
(3-2B, 4-3B)
(1-3D, 3-1B, 8-3A)
(1-3D, 3-1B, 8-3A)
(1-3D, 3-1B, 8-3A)
(1-3D, 3-1B)
(3-2B
, 4-3B)
(3-2B)
(2-2E, 3-2B)
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A2
A3
A4
A5
A6
A7
(1-2A, 3-1B)
C
C
D
D
E
E
4
3
2
1
2/16
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