Sharp MX-B381 / MX-B401 (serv.man9) Service Manual ▷ View online
MX-B381/B401 CIRCUIT DIAGRAM AND PARTS LAYOUT 2 – 82
24V3
5VN
24V3
5VN
24V3
5VN
24V3
5VN
12V
INT24V1
24V3
PGND
PGND
PGND
PGND
24V3
12V
PGND
PGND
24V3
PGND
<TNM_M_IN1>
(5)
TNM_M_1
(18)
<TNM_M_IN2>
(5)
TNM_M_2
(18)
<TNM_Y_IN1>
(5)
TNM_Y_1
(18)
<TNM_Y_IN2>
(5)
TNM_Y_2
(18)
<TNM_K_IN1>
(5)
TNM_K_1
(18)
<TNM_K_IN2>
(5)
TNM_K_2
(18)
<TNM_C_IN1>
(5)
TNM_C_1
(18)
<TNM_C_IN2>
(5)
TNM_C_2
(18)
POFM_V
(16)
PROFM1_V
(17)
HDDFM_V
(18)
FM_V#
(4)
FM_V
(18)
Toner Motor Driver
+
C66
x_10u/35V
x_10u/35V
+
C66
x_10u/35V
x_10u/35V
R467
47kJ
47kJ
R467
47kJ
47kJ
TP726
TP726
IN
GND
OUT
Q70
x_KRC102S
Q70
x_KRC102S
C36
OPEN_C
C36
OPEN_C
TP824
TP824
R510
47kJ
47kJ
R510
47kJ
47kJ
Q66
2SA2056
2SA2056
Q66
2SA2056
2SA2056
D76
1SS355
1SS355
D76
1SS355
1SS355
Q51
x_2SA2056
x_2SA2056
Q51
x_2SA2056
x_2SA2056
TP825
TP825
A
K
D79
RLS-73
D79
RLS-73
A
K
D136
RLS-73
D136
RLS-73
C77
0.1uF C77
0.1uF
VDD
2
IN1
9
IN2
1
VSS
5
OUT2
3
OUT1
7
VCC2
8
VCC1
6
N.C
4
IC10
x_TA7291AS
IC10
x_TA7291AS
D95
1SS355
1SS355
D95
1SS355
1SS355
+
C38
x_10u/35V
x_10u/35V
+
C38
x_10u/35V
x_10u/35V
Q53
2SA2056
2SA2056
Q53
2SA2056
2SA2056
TP522
TP522
TP827
TP827
VDD
2
IN1
9
IN2
1
VSS
5
OUT2
3
OUT1
7
VCC2
8
VCC1
6
N.C
4
IC5
x_TA7291AS
IC5
x_TA7291AS
R421
4.7kJ 1/4W
4.7kJ 1/4W
R421
4.7kJ 1/4W
4.7kJ 1/4W
R543
4.7kJ 1/4W
4.7kJ 1/4W
R543
4.7kJ 1/4W
4.7kJ 1/4W
TP713
TP713
+
C78
10u/35V
10u/35V
+
C78
10u/35V
10u/35V
Q65
2SA2056
2SA2056
Q65
2SA2056
2SA2056
GND
OUT
R664
x_10kJ
x_10kJ
R664
x_10kJ
x_10kJ
VDD
2
IN1
9
IN2
1
VSS
5
OUT2
3
OUT1
7
VCC2
8
VCC1
6
N.C
4
IC4
x_TA7291AS
IC4
x_TA7291AS
R166
OPEN_R
OPEN_R
R166
OPEN_R
OPEN_R
28
28
R130
OPEN_R
OPEN_R
R130
OPEN_R
OPEN_R
R529
47kJ
47kJ
R529
47kJ
47kJ
A
K
D101
x_RLS-73
D101
x_RLS-73
TP523
TP523
TP830
TP830
R435
47kJ
47kJ
R435
47kJ
47kJ
C51
OPEN_C
OPEN_C
C51
OPEN_C
OPEN_C
29
29
C37
OPEN_C
OPEN_C
C37
OPEN_C
OPEN_C
TP704
TP704
VDD
2
IN1
9
IN2
1
VSS
5
OUT2
3
OUT1
7
VCC2
8
VCC1
6
N.C
4
IC11
TA7291AS
IC11
TA7291AS
R99
OPEN_R
OPEN_R
R99
OPEN_R
OPEN_R
R284
x_4.7kJ 1/4W
x_4.7kJ 1/4W
R284
x_4.7kJ 1/4W
x_4.7kJ 1/4W
TP826
TP826
A
K
D107
RLS-73
D107
RLS-73
D137
1SS355
1SS355
D137
1SS355
1SS355
Q47
2SA2056
2SA2056
Q47
2SA2056
2SA2056
Q71
x_2SA2056
x_2SA2056
Q71
x_2SA2056
x_2SA2056
C30
OPEN_C
OPEN_C
C30
OPEN_C
OPEN_C
GND
OUT
R207
4.7KJ
4.7KJ
R207
4.7KJ
4.7KJ
C64
OPEN_C
C64
OPEN_C
R447
4.7kJ 1/4W
4.7kJ 1/4W
R447
4.7kJ 1/4W
4.7kJ 1/4W
R285
x_47kJ
x_47kJ
R285
x_47kJ
x_47kJ
TP727
TP727
C44
OPEN_C
C44
OPEN_C
D24
x_1SS355
x_1SS355
D24
x_1SS355
x_1SS355
A
K
D135
RLS-73
D135
RLS-73
R436
4.7kJ 1/4W
4.7kJ 1/4W
R436
4.7kJ 1/4W
4.7kJ 1/4W
C65
OPEN_C
OPEN_C
C65
OPEN_C
OPEN_C
+
C52
x_10u/35V
+
C52
x_10u/35V
1
J 1/4W
J 1/4W
1
J 1/4W
J 1/4W
TP831
TP831
R448
47kJ
47kJ
R448
47kJ
47kJ
3
2
1
3
2
1
D
C
B
A
8/19
MX-B381/B401 CIRCUIT DIAGRAM AND PARTS LAYOUT 2 – 83
3.3V
3.3V
3.3V
INT24V1
3.3V
3.3V
3.3V
/CPFM_CNT
(6)
24V_C
(17)
RRM_CW_CCW
(4)
RRM_ENABLE
(4)
RRM_CLK
(4)
RRM_MODE
(4)
RRM_OUT_/A
(17)
RRM_OUT_B
(17)
RRM_OUT_A
(17)
RRM_OUT_/B
(17)
/RRM_CNT
(6)
POM_
(4)
POM_
(4)
POM_
(4)
POM_
(4)
/P
(6)
CPFM_A
(4)
CPFM_B
(4)
CPFM_XB
(4)
CPFM_XA
(4)
RRM
CPFM
C158
0.1uF
C158
0.1uF
C153
1000pF
C153
1000pF
C183
1000pF
C183
1000pF
TP520
TP520
SenseA
5
REF
9
SenseB
14
In /A
7
In A
8
In /B
12
OUT
OUT
OUT
OUT
G
In B
11
Sync
6
OUT
OUT
OUT
OUT
IC21
STA7101M
IC21
STA7101M
R297
100J
R297
100J
TP295
TP295
TP473
TP473
C184
0.22u/50V(1608)
C184
0.22u/50V(1608)
R399
62kJ
62kJ
R399
62kJ
62kJ
R286
0J
R286
0J
R296
100J
R296
100J
R364
3.6k
F
R364
3.6k
F
C157
1000pF
C157
1000pF
C111
1000pF
C111
1000pF
R337
0.2J(3225)
R337
0.2J(3225)
C181
0.1u/50V(1608)
C181
0.1u/50V(1608)
R267
100J
R267
100J
TP475
TP475
R340
100J
R340
100J
TP388
TP388
R269
4.7kF
4.7kF
R269
4.7kF
4.7kF
R344
0.2J(3225)
R344
0.2J(3225)
R300
4.7k
J
R300
4.7k
J
C120
100pF
C120
100pF
C182
0.1u/50V(1608)
C182
0.1u/50V(1608)
TP472
TP472
TP387
TP387
R298
3.9k
F
R298
3.9k
F
C155
1000pF
C155
1000pF
F5
0603SFF100FM
F5
0603SFF100FM
TP325
TP325
C154
1000pF
C154
1000pF
R242
0.3J(1W)
R242
0.3J(1W)
IN
GND
OUT
Q42
KRC102S
Q42
KRC102S
TP389
TP389
R294
0.3J(1W)
R294
0.3J(1W)
TP386
TP386
TP420
TP420
TP355
TP355
TP356
TP356
R295
100J
R295
100J
R398
4.7kJ
R398
4.7kJ
C110
100pF
C110
100pF
TP471
TP471
SENSE1
1
ENABLE
9
MS2
23
RESET
16
VREG
15
GND
18
CP1
20
OUT2A
11
VBB2
13
OUT2B
14
VCP
19
DIR
5
CP2
21
NC
3
GND
7
MS1
4
STEP
6
REF
8
VD
D
10
SENSE2
12
ROSC
17
OUT1B
22
VBB1
24
OUT1A
2
IC31
A3987SLP
IC31
A3987SLP
R338
100J
R338
100J
R268
620F
R268
620F
C156
1000pF
C156
1000pF
R339
100J
R339
100J
C118
100pF
C118
100pF
TP476
TP476
R270
OPEN_R
R270
OPEN_R
R342
10kF
10kF
R342
10kF
10kF
+
C202
47u/50V
+
C202
47u/50V
C119
100pF
C119
100pF
R343
100J
R343
100J
TP474
TP474
R341
3.6k
F
R341
3.6k
F
C185
0.1u/50V(1608)
C185
0.1u/50V(1608)
IN
GND
OUT
Q40
x_KRC102S
Q40
x_KRC102S
5
4
3
5
4
3
D
C
B
A
PCU PWB (Driver section 4)
MX-B381/B401 CIRCUIT DIAGRAM AND PARTS LAYOUT 2 – 84
INT24V1
3.3V
3.3V
3.3V
INT24V1
3.3V
CPFM_OUT_A
(17)
CPFM_OUT_B
(17)
CPFM_OUT_/A (17)
CPFM_OUT_/B (17)
V_CPFM
OM_CLK
OM_ENABLE
OM_CW_CCW
OM_MODE
OM_MODE
/POMCNT
)
POM_OUT_A
(17)
POM_OUT_/B
(17)
POM_OUT_B
(17)
POM_OUT_/A
(17)
POM
+
C201
47u/50V
+
C201
47u/50V
R396
4.7kJ
R396
4.7kJ
R334
10kF
10kF
R334
10kF
10kF
Vs
13
OUT /A1
3
OUT A1
1
OUT /B1
15
OUT B1
17
GND
10
OUT A2
2
OUT B2
18
OUT /A2
4
OUT /B2
16
F3
0603SFF200FM
F3
0603SFF200FM
C180
0.1u/50V(1608)
C180
0.1u/50V(1608)
R335
100J
R335
100J
SENSE1
1
ENABLE
9
MS2
23
RESET
16
VREG
15
GND
18
CP1
20
OUT2A
11
VBB2
13
OUT2B
14
VCP
19
DIR
5
CP2
21
NC
3
GND
7
MS1
4
STEP
6
REF
8
VD
D
10
SENSE2
12
ROSC
17
OUT1B
22
VBB1
24
OUT1A
2
IC30
A3987SLP
IC30
A3987SLP
C176
0.1u/50V(1608)
C176
0.1u/50V(1608)
R329
0.2J(3225)
R329
0.2J(3225)
R332
100J
R332
100J
C178
1000pF
C178
1000pF
R336
0.2J(3225)
R336
0.2J(3225)
TP480
TP480
TP391
TP391
TP477
TP477
TP457
TP457
TP482
TP482
R363
3.6k
F
R363
3.6k
F
TP478
TP478
C151
1000pF
C151
1000pF
C149
1000pF
C149
1000pF
R271
4.7k
J
R271
4.7k
J
TP422
TP422
C148
1000pF
C148
1000pF
TP479
TP479
R331
100J
R331
100J
TP421
TP421
C147
1000pF
C147
1000pF
TP481
TP481
TP296
TP296
C152
0.1uF
C152
0.1uF
F4
0603SFF100FM
F4
0603SFF100FM
TP271
TP271
TP390
TP390
IN
GND
OUT
Q41
KRC102S
Q41
KRC102S
TP358
TP358
R397
62kJ
62kJ
R397
62kJ
62kJ
+
C9
8
47u/50V
+
C9
8
47u/50V
R330
100J
R330
100J
C9
7
0.1u/50V(1608)
C9
7
0.1u/50V(1608)
C150
1000pF
C150
1000pF
TP357
TP357
TP392
TP392
C179
0.22u/50V(1608)
C179
0.22u/50V(1608)
C177
0.1u/50V(1608)
C177
0.1u/50V(1608)
R333
4.7k
F
R333
4.7k
F
3
2
1
3
2
1
D
C
B
A
9/19
MX-B381/B401 CIRCUIT DIAGRAM AND PARTS LAYOUT 2 – 85
5VN
12V
12V
5VN
3.3V
3.3V
3.3V
3.3V
5VN
DL_BK#
(17)
DL_C#
(17)
DL_M#
(17)
DL_Y#
(17)
/TNCRU_K
(18)
/TNCRU_C
(18)
/TNCRU_M
(18)
/TNCRU_Y
(18)
TNCRU_K
(4)
/TNCRU_K_in
(5)
/TNCRU_C_in
(5)
/TNCRU_M_in
(5)
/TNCRU_Y_in
(5)
/FUCRU
(17)
/FUCRU_in
(5)
TNCRU_C
(4)
TNCRU_M
(4)
TNCRU_Y
(4)
FUCRU
(3)
DLOPEN_K
(4)
DLOPEN_C
(4)
DLOPEN_M
(4)
DLOPEN_Y
(4)
DL_BK
(4)
DL_C
(4)
DL_M
(4)
DL_Y
(4)
non-CRUM model only
DL
D
TN Cartridge end
P
Fusing un initial
2T
R118
OPEN_R
R118
OPEN_R
TP99
TP99
TP162
TP162
R653
x_13J 3/4W
R653
x_13J 3/4W
TP98
TP98
R115
10kJ
10kJ
R115
10kJ
10kJ
Q23
x_2SB1132
x_2SB1132
Q23
x_2SB1132
x_2SB1132
C80
0.1uF
0.1uF
C80
0.1uF
0.1uF
TP124
TP124
R183
10kJ
10kJ
R183
10kJ
10kJ
R208
47kJ
47kJ
R208
47kJ
47kJ
R174
x_1kJ
x_1kJ
R174
x_1kJ
x_1kJ
D78
1SS355
D78
1SS355
Q35
x_2SB1132
x_2SB1132
Q35
x_2SB1132
x_2SB1132
R154
x_56J 1/2W
R154
x_56J 1/2W
TP125
TP125
R169
x_10kJ
x_10kJ
R169
x_10kJ
x_10kJ
Q30
x_2SA1576UB
x_2SA1576UB
Q30
x_2SA1576UB
x_2SA1576UB
R654
x_13J 3/4W
R654
x_13J 3/4W
Q33
x_2SB1132
x_2SB1132
Q33
x_2SB1132
x_2SB1132
TP95
TP95
IN
GND
OUT
Q16
x_KRC102S
Q16
x_KRC102S
IN
GND
OUT
Q22
x_KRC102S
Q22
x_KRC102S
TP131
TP131
R113
OPEN_R
OPEN_R
R113
OPEN_R
OPEN_R
Q28
2SA1576UB
2SA1576UB
Q28
2SA1576UB
2SA1576UB
TP100
TP100
C312
1000pF
1000pF
C312
1000pF
1000pF
C53
x_1000pF
x_1000pF
C53
x_1000pF
x_1000pF
C90
0.1uF
0.1uF
C90
0.1uF
0.1uF
R563
2kJ
2kJ
R563
2kJ
2kJ
Q29
x_2SA1576UB
x_2SA1576UB
Q29
x_2SA1576UB
x_2SA1576UB
TP107
TP107
TP93
TP93
R132
47kJ
47kJ
R132
47kJ
47kJ
R173
x_10kJ
x_10kJ
R173
x_10kJ
x_10kJ
R119
OPEN_R
OPEN_R
R119
OPEN_R
OPEN_R
R211
x_13J 2W
R211
x_13J 2W
TP126
TP126
7
6
1
3
12
+
-
IC12A
LM339
+
-
IC12A
LM339
R171
x_300J 1/4W
x_300J 1/4W
R171
x_300J 1/4W
x_300J 1/4W
R581
51J 3/4W
R581
51J 3/4W
R648
20kJ
20kJ
R648
20kJ
20kJ
R114
3.3kJ
R114
3.3kJ
TP161
TP161
R116
OPEN_R
R116
OPEN_R
R134
47kJ
47kJ
R134
47kJ
47kJ
Q21
x_2SB1132
x_2SB1132
Q21
x_2SB1132
x_2SB1132
TP94
TP94
R159
1MJ
1MJ
R159
1MJ
1MJ
R117
OPEN_R
OPEN_R
R117
OPEN_R
OPEN_R
R647
4.7kJ
4.7kJ
R647
4.7kJ
4.7kJ
5
4
2
+
-
IC12B
LM339
+
-
IC12B
LM339
R170
x_1kJ
x_1kJ
R170
x_1kJ
x_1kJ
TP157
TP157
C91
0.1uF
0.1uF
C91
0.1uF
0.1uF
R160
x_56J 1/2W
R160
x_56J 1/2W
R432
x_13J 3/4W
R432
x_13J 3/4W
IN
GND
OUT
Q20
x_KRC102S
Q20
x_KRC102S
TP123
TP123
R104
x_10kJ
x_10kJ
R104
x_10kJ
x_10kJ
R244
10kJ
10kJ
R244
10kJ
10kJ
TP156
TP156
R156
56J 1/2W
R156
56J 1/2W
TP106
TP106
C40
x_1000pF
x_1000pF
C40
x_1000pF
x_1000pF
R102
x_300J 1/4W
x_300J 1/4W
R102
x_300J 1/4W
x_300J 1/4W
9
8
14
+
-
IC12C
LM339
+
-
IC12C
LM339
TP103
TP103
R146
x_13J 2W
R146
x_13J 2W
TP104
TP104
R147
x_13J 2W
R147
x_13J 2W
R155
1MJ
1MJ
R155
1MJ
1MJ
TP96
TP96
R167
x_300J 1/4W
x_300J 1/4W
R167
x_300J 1/4W
x_300J 1/4W
Q27
x_2SA1576UB
x_2SA1576UB
Q27
x_2SA1576UB
x_2SA1576UB
IN
GND
OUT
Q32
x_KRC102S
x_KRC102S
Q32
x_KRC102S
x_KRC102S
R131
x_1kJ
x_1kJ
R131
x_1kJ
x_1kJ
C39
x_1000pF
x_1000pF
C39
x_1000pF
x_1000pF
IN
GND
OUT
Q14
KRC102S
Q14
KRC102S
11
10
13
+
-
IC12D
LM339
+
-
IC12D
LM339
(G)
(D)
(S)
Q54
2SK3065
2SK3065
(G)
(D)
(S)
Q54
2SK3065
2SK3065
TP163
TP163
R210
47kJ
47kJ
R210
47kJ
47kJ
TP204
TP204
C57
0.1uF
0.1uF
C57
0.1uF
0.1uF
R158
x_56J 1/2W
R158
x_56J 1/2W
R182
10kJ
10kJ
R182
10kJ
10kJ
R133
x_1kJ
x_1kJ
R133
x_1kJ
x_1kJ
IN
GND
OUT
Q13
x_KRC102S
Q13
x_KRC102S
TP159
TP159
R105
x_300J 1/4W
x_300J 1/4W
R105
x_300J 1/4W
x_300J 1/4W
R184
1MJ
1MJ
R184
1MJ
1MJ
R107
x_10kJ
x_10kJ
R107
x_10kJ
x_10kJ
C54
x_1000pF
x_1000pF
C54
x_1000pF
x_1000pF
R157
1MJ
1MJ
R157
1MJ
1MJ
R112
OPEN_R
R112
OPEN_R
R186
10kJ
10kJ
R186
10kJ
10kJ
TP97
TP97
TP129
TP129
R209
x_13J 2W
R209
x_13J 2W
IN
GND
OUT
Q34
x_KRC102S
Q34
x_KRC102S
R569
x_13J 2W
R569
x_13J 2W
R652
x_13J 3/4W
R652
x_13J 3/4W
R243
10kJ
10kJ
R243
10kJ
10kJ
R185
4.7kJ
4.7kJ
R185
4.7kJ
4.7kJ
C58
0.1uF
0.1uF
C58
0.1uF
0.1uF
IN
GND
OUT
Q15
x_KRC102S
Q15
x_KRC102S
A
B
C
A
B
C
4
3
2
1
PCU PWB (Driver section 5)
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