Read Sharp MX-B381 / MX-B401 (serv.man9) Service Manual online
MX-B381/B401 CIRCUIT DIAGRAM AND PARTS LAYOUT 2 – 113
FAX_TXD_CS_N
FAX_RXD_D_N
FAX_RXD_D_P
FAX_RXD_D_P
FAX_RXD_CS_P
FAX_RXD_CS_N
FAX_RXD_CS_N
FAX_TXD_D_P
FAX_TXD_D_N
FAX_TXD_CS_P
+12V
+5VHD
+24V1
+12V
+3.3VN
DGND
DGND
DGND
+3.3VN
DGND
DGND
DGND
+5VL
DGND
PGND
PGND
3R3V_ECO
DGND
3R3V_ECO
DGND
DGND
PGND
nCNCT_FAX
(2)
nC
nR
nC
nR
n
nRES_FAX
(2)
Power supply for HDD
DC Power Supply (+12V/+5VN/+3.3VN)
FAX PWB (Reserve)
C632
0.1uF(B:1608)
C632
0.1uF(B:1608)
Q35
4.7K
47K
X_DTC143ZUBTL
Q35
4.7K
47K
X_DTC143ZUBTL
C604
X_0.1uF(B)
C604
X_0.1uF(B)
R4
X_1KJ
R4
X_1KJ
C676
1000pF(B)
C676
1000pF(B)
C686
1000pF(B)
C686
1000pF(B)
C73
0.1uF(1608)
C73
0.1uF(1608)
+
C52
X_10uF/16V(MVL:D60)
+
C52
X_10uF/16V(MVL:D60)
C605
0.1uF(B)
C605
0.1uF(B)
R600
100KJ(B)
100KJ(B)
R600
100KJ(B)
100KJ(B)
C603
X_1000pF(B)
C603
X_1000pF(B)
R1
X_1KJ
R1
X_1KJ
CP150
CP150
C75
1000pF
C75
1000pF
C675
0.1uF(B:1608)
C675
0.1uF(B:1608)
R614
47KJ(B)
47KJ(B)
R614
47KJ(B)
47KJ(B)
+
C60
47uF/25V(MVL:F80)
+
C60
47uF/25V(MVL:F80)
C591
X_0.1uF(B)
C591
X_0.1uF(B)
R570
47KJ(B)
R570
47KJ(B)
C592
X_1000pF(B)
C592
X_1000pF(B)
CN15
B4P-VH(LF)(SN)
CN15
B4P-VH(LF)(SN)
+12V
1
+5VHD
2
DGND
3
DGND
4
R579
100KJ(B)
100KJ(B)
R579
100KJ(B)
100KJ(B)
CN11
X_B31C-CSRK(LF)(SN)
CN11
X_B31C-CSRK(LF)(SN)
GND
1
GND
2
+3.3V_F
3
+3.3V_F
4
nCNCT_FAX
5
FAXD_TXD_N
6
FAXD_TXD_P
7
+5V_(off)
8
nRES_FAX
9
FAXCS_TXD_P
10
FAXCS_TXD_N
11
GND
12
FAXD_RXD_N
13
FAXD_RXD_P
14
nFAX_WUP
15
FAXCS_RXD_P
16
FAXCS_RXD_N
17
5V_(off)
18
GND
19
nFAXD_RTS
20
GND
21
nFAXD_CTS
22
FLVPP
23
nFAXCS_RTS
24
+5V_A
25
nFAXCS_CTS
26
+24V
27
+3.3V_F
28
+3.3V_F
29
GND
30
PGND
31
+
C72
33uF/35V(MVL:F80)
+
C72
33uF/35V(MVL:F80)
JP10
DGND
JP10
DGND
JP9
+24V1
JP9
+24V1
Q1
4.7K
47K
X_DTC143ZUBTL
Q1
4.7K
47K
X_DTC143ZUBTL
CN12
B5P-VH(LF)(SN)
CN12
B5P-VH(LF)(SN)
+12V
1
D-GND
2
+5VN
3
D-GND
4
+3.3
V
5
JP8
PGND
JP8
PGND
C
C
+
C76
470uF/16V(KZE:H15)
470uF/16V(KZE:H15)
+
C76
470uF/16V(KZE:H15)
470uF/16V(KZE:H15)
JP5
+12V
JP5
+12V
+
C79
22uF/16V(MVL:E60)
+
C79
22uF/16V(MVL:E60)
C631
1000pF(B)
C631
1000pF(B)
C691
0.1uF(B)
C691
0.1uF(B)
+
C54
X_10uF/16V
+
C54
X_10uF/16V
5
4
3
5
4
3
D
C
B
A
LSU-MOTHER PWB (Power Connector & FAX I/F)
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