Sharp MX-1800N (serv.man19) Service Manual ▷ View online
MX-1800N ELECTRICAL SECTION 11 – 5
E. Serial communication
CPU
H8S/2373
TxD_DSK
RxD_DSK
TxD_FIN
RxD_FIN
O.
C
.
O.
C
.
O.
C
.
O.
C
.
I/O
ASIC
P
D658
92GC-
10
3
O.
C
.
O.
C
.
O.
C
.
O.
C
.
CPU
M3
0843F
W
GP
Schmit
Inv.
O.C.
O.C.
O.C.
CP
U
H8/3684
DTR_FIN
DSR_FIN
DTR_DSK
DSR_DSK
PCU
FINISHER
(Optional)
DESK
(Optional)
Schmit
Inv.
O.C.
O.C.
O.C.
A[4:0]
D[15:8]
Sc
hm
it
In
v
.
Sc
hm
it
In
v
.
Sc
hm
it
In
v
.
SCK_LSU
RSV_DAT
TRANS_DAT
Schmit
Inv.
Schmit
Inv.
Schmit
Inv.
LS
U
A
S
IC
O.
C
.
nPCU_RD
Sc
hm
it
In
v
.
nPCU_TD
O.
C
.
PCU_DSR
Sc
hm
it
In
v
.
PCU_DTR
Sc
hm
it
In
v
.
O.C.
Sc
hm
it
In
v
.
O.C.
MFPC
I/F
ASIC
O.C
O.C.
Sc
hm
it
In
v
.
O.C.
nTx
D
_SCN
nRxD_SCN
R
T
S
_S
C
N
CPU
H8S/2373
Schmit
Inv.
Schmit
Inv.
O.
C
Sc
hm
it
In
v
.
CTS_
SCN
Tx
D0
I/O
ASIC
P
D65
892GC
O.
C
O.C.
Sc
hm
it
In
v
.
O.C.
DTR
_
F
A
X
D
)
DSR
_F
AX
D)
DT
R
_F
A
X
C
S)
Sch
m
it
Inv
.
Sch
m
it
Inv
.
O.
C
Sc
hm
it
In
v
.
DSR
_F
A
X
C
S)
P.D.
P.
U.
P.D.
P.
U.
P.D.
P.
U.
P.
U.
P.D.
P.D.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.
U.
P.U
.
P.
U.
P.
U.
P.U
.
P.
U.
P.
U.
P.U
.
P.
U.
P.
U.
P.U
.
P.
D.
P.
D.
P.
U.
P.
U.
P.
D.
P.U
.
P.
U.
P.U
.
P.
D.
P.
D.
P.
U.
P.
D.
A[4:0]
D[15:8]
P.
D.
P.
U.
P.
U.
P.D.
P.
D.
P.
U.
P.
U.
P.D.
Tx
D_F
A
X
(D)
R
x
D_F
A
X
(D)
Tx
D_F
AX(CS)
Rx
D_
FA
X
(CS)
LVDS
Rx
D0
I/O
port
I/O
port
Tx
D1
Rx
D1
SCK1
Tx
D2
Rx
D2
Tx
D3
Rx
D3
Rx
D
Tx
D
SCK
Rx
D
Tx
D
I/O
I/O
Rx
D
Tx
D
I/O
I/O
Rx
D
[1]
Tx
D[1
]
CTS[
1]
RTS
[1]
Rx
D[
2]
Tx
D[2
]
CTS[
2]
RT
S
[2]
Rx
D[
3]
Tx
D[3
]
CTS[
3]
RT
S
[3]
Tx
D[4
]
Rx
D[
4]
CTS[
4]
RT
S
[4]
PIC
Tx
D[PIC]
Rx
D[
P
IC
]
O.C.
Sch
m
it
Inv
.
P.
U.
P.D.
nT
xD_PI
C
O.
C
Sc
hm
it
In
v
.
nR
x
D
_PIC
P.
U.
CLR
[P
IC
]
O.C.
O.C
P.U
.
CLR
_P
IC
RE
Q
[P
IC
]
Sc
hm
it
In
v
.
RE
Q
_P
IC
O.C
P.
U.
LSU
SCN
Cnt
Moth
er
MFPC
1s
t
F
AX
New
AS
IC
T
xD_FAX(D)+
T
xD_F
A
X(D)-
R
xD_
F
A
X(D)
+
R
xD_
F
A
X(D)
-
Tx
D_FAX
(CS)+
Tx
D_FAX
(CS)-
Rx
D_
F
A
X
(C
S
)+
Rx
D_
F
A
X
(C
S
)-
RxD
Tx
D
CP
U
S
H
7
706
PI
C
Tx
D
RxD
P.
U.
DOCC
(Optional)
CP
U
H8S/2
320
O.
C.
Schm
it
Inv
.
RxD
TxD
Schmit
Inv.
O.
C.
MX-1800N ELECTRICAL SECTION 11 – 6
F. AC power line diagram
VR3
F103
A1
VR2
D1
0
1
~
~
+
-
WH
-S
W
F102
L2
L1
VR1
Z101
A2
F2
A1
F101
F1
F301
RY
1
HLOUT_UM
IN
T
2
4
V
1
HLOUT_LM
/H
L
_
P
R
HLOUT_US
24V2
GND
L
N
T10AH/250V
T10AH/250V
AC
P
W
B
2
6
RY
1
6
2
G
HL
PW
B
T2
GND
1
G
4
4
GND
T1
1
T2
dra
w
er
TD1
SSR1
S
SR2
HL
MAI
N
THERMOST
A
T
THERMOST
A
T
FUSING
UNI
T
HL
L
O
W
THERMOST
A
T
HL
SUB
6
2G
N
D
G
4
1
SSR3
T1
T1
T2
MA
IN
PO
WER
S
W
WH
-L
WH
-N
NC
WH
P
W
B
NO
T2.0AH/250V
WH
-L
WH
-N
F3
F4
T2.0AH/250V
AC
IN
TD2
TD3
10W
DESK
MA
IN
UNI
T
10W
MAI
N
UNI
T
SCN
SCN
u
ni
t
5W
no-mounting
no-mounting
DESK
OPTI
ON
W
A
RM
HEA
T
ER
SET
O
PTI
O
N
no-
m
ountin
g
Vo
lt
a
g
e
G
eneration
+24V1 +24V2 +24V3 +24V4 +24V5 +12V +5Vn +3.3V
FW
G
e
nerating
C
ircui
t
DC
PO
W
E
R
S
UPPL
Y
T6.3AH/250V
T3.15AH/250V
T5AH/250V
N/
F
T1AH/250V
150
A
C
120V
-1
5A/A
C
240V
-10A
°C
150
A
C
120V
-1
5A/A
C
240V
-10A
°C
150
A
C
120V
-1
5A.A
C
240V
-10A
°C
Vo
lta
g
e
G
eneration
+5
V
o
+5
V
L
OPTI
ON
MX-1800N ELECTRICAL SECTION 11 – 7
G. DC power line diagram
HL
_
P
R
L
N_HL(M
AIN
)
N_
HL
(L
O
W
)
5V
N
N_
HL
(SUB)
3
.3V
5V
N
12
V
2
4V3
5V
L
5V
O
D
-GND
D
-GND
5V
L
P
-GND
MOTHER
PWB
24
V
2
D
-GND
P
-GND
PC
U
P
W
B
2
4V3
FW
12
V
P
-GND
5V
N
3
.3V
2
4V1
D
-GND
AC
P
W
B
24
V
2
INT24V2
/
INT_CNT
P-
G
N
D
I
NT24V1
MC
PWB
1
stTC
PWB
INT24V2
P-GND
PF
M
24
V
1
DV
M
_
B
K
D
V
M_CL
P-
G
N
D
P-GND
P-
G
N
D
P-
G
N
D
I
NT24V2
INT24V2
I
N
T24V2
I
N
T24V2
P-
G
N
D
IN
T
2
4
V
2
DRIVER
SUB
P
WB
DRIVER
MAIN
PWB
2n
d
T
C
P
W
B
IN
T
2
4
V
2
P-
G
N
D
I
NT24V1
IN
T24V1
INT24V1
I
N
T24V1
P-GND
P-GND
5V
N
5
V
N
5V
N
PS
F
M
PS
M
FU
M
PO
M
AD
U
L
M
DM
_
B
K
DM
_
C
L
OS
M
/
INT_CNT
24
V
2
24
V
2
HL
P
W
B
I
N
T24V1
P-
G
N
D
H
L
(MAIN)
H
L
(LOW)
HD
D
12
V
5V
N
D-
G
N
D
D-
G
N
D
LS
U
PW
B
24
V
3
5V
N
3.
3
V
P-
G
N
D
D-
G
N
D
D-
G
N
D
PM
2
4V3
P-
G
N
D
5V
_
L
D
5
V
_
L
D
LD
_
B
K
LD
_
C
LD
_
M
LD
_
Y
5V
_
L
D
D-
G
N
D
5V
_
L
D
5V
L
5V
O
3.
3
V
12
V
D-
G
N
D
MFPC
PWB
24
V
3
P-
G
N
D
12
V
5V
N
3
.3V
D-
G
N
D
24
V
3
P-
G
N
D
12
V
5V
N
3.
3
V
D-
G
N
D
SCAN
CNT
PWB
5V
O
5V
O
KE
Y
O
P
PW
B
5V
N
5V
O
3
.3V
D-
G
N
D
OR
S
P
D
PW
B
5V
N
D-
G
N
D
LV
DS
PW
B
2
4
V_EXT
3
.3V_EXT
D-
G
N
D
LC
D
P
W
B
3.
3
V
D-
G
N
D
P-
G
N
D
P-
G
N
D
24
V
INVERTOR
PWB
D-GND
A
3
.3V
C
C
D
P
WB
A1
2
V
A5
V
CL
INVERTOR
PWB
P-GND
24
V
CL
IN
T
2
4
V
1
IN
T
2
4
V
1
ORS
LED
PWB
24
V
1
24
V
_
E
X
T
5
V
_EXT
P-
G
N
D
AV
C
C
5V
P
D
D-
G
N
D
2
4
V_EXT
5
V
_EXT
P-
G
N
D
AV
C
C
5V
P
D
D-
G
N
D
R
S
P
F
U
N
C
A
RD
READER
5V
D-
G
N
D
12
V
P-
G
N
D
5V
N
3.
3
V
D-
G
N
D
FA
X
MA
IN
PW
B
TE
L
LI
U
PW
B
12
V
3.
3
V
5V
S
5V
D-G
N
D
A-
G
N
D
FI
NISHER
5V
N
2
4V5
P
-GND
D-
G
N
D
24
V
5
P-
G
N
D
5V
N
D-
G
N
D
5V
N
2
4V4
P
-GND
D
-GND
D-
G
N
D
5
V
N
D
ESK
P-GND
24
V
4
D-GND
D-GND
D-
G
N
D
P-
G
N
D
D-
G
N
D
5V
O
5V
L
5V
L
3
.3V
24
V
3
12
V
5V
N
D-
G
N
D
24
V
1
P-
G
N
D
12
V
P-
G
N
D
D-
G
N
D
5V
N
D-
G
N
D
24
V
3
3
.3V
FW
5VN
P
D
5V
N
P
D
R
D
I/F
PWB
D-GND
D-
G
N
D
5V
N
5V
N
P
D
PS
U
INT24V2
option
o
p
tion
D
O
CUMENT
CONTROL
P
WB
D-
G
N
D
5V
N
3.
3
V
D-
G
N
D
o
ption
5V
N
3
.3V
D-
G
N
D
D-
G
N
D
5
V_LD
24
V
3
P-
G
N
D
5V
N
3
.3V
D-
G
N
D
D-
G
N
D
2
4V2
L
S
USS_B
L
S
USS_C
IN
T
2
4
V
1
IN
T
2
4
V
1
op
ti
o
n
INT24V1
HL
(S
U
B
)
F
205
FU
S
E
F
204
FU
S
E
F
201
FU
S
E
RD
S
W
F
203
FU
S
E
FD
S
W
F
202
FU
S
E
FET
MX-1800N ELECTRICAL SECTION 11 – 8
2. Actual wiring chart
A. Power supply section (P1)
(AC
CORD)
CN1(B03P-VL)
AC
PWB
CN2(B03P-VL-K)
(MSW
h
arness)
CN6(B03B-PASK-1)
(DC
m
ain
harness)
CN20(B4P-PH-K-S)
1
L_IN
MSW-Nout
1
M
SW-Nout
1
D
CCNT1
1
1
2N
C
NC
2
PS-250(RED)
NC
2
2
NC
NC
3N
_
IN
MSW-Lout
3
MSW-Lout
1
D
CCNT2
3
3
n
DCCNT1
CN6(B2P3-VH-R)
CN3(B03P-VL-R)
PS-250(RED)
4
n
DCCNT2
1
N_WH
MSW-Lin
1
M
SW-Lin
1
2N
C
NC
2
PS-250
MSW
CN2(B5P-VH-B)
(DC
m
ain
harness)
CN19(B10P-VH)
3
L_WH
MSW-Nin
3
MSW-Nin
1
D-GND
1
1
D-GND
CN4(B3P4-VH-R)
PS-250
CN1(B2P3-VH-B)
D-GND
2
2
D
-GND
CN5(B03P-VL-E)
L_DC
1
3
L_DC
5VO
3
35
V
L
1
L
_HL
NC
2
2
NC
5VL
4
45
V
L
2N
C
NC
3
1
N_DC
5VL
5
55
V
O
3
N_HL
N_DC
4
6
3.3V
(AC-HL
harness)
CN10(B4P-PH-K-S)
(AC-DC
harness)
75
V
N
1
81
2
V
NC
2
CN3(B03P-VH-B)
92
4
V
3
CN1
NC
3
3.3V
1
10
P-GND
L_HL
1
4
3.3V
2
NC
2
D-GND
3
N_HL
3
B03P-VL
HL
PWB
CN4(B6P-VH-B)
5VN
1
CN3
5VN
2
12
4
V
1
(AC-WH
harness
)
5VN
3
TO
LCC(P15)
2P
-G
N
D
5VN
4
TO
INSERTOR(P16)
To
P2
32
4
V
2
PS-187
D-GND
5
4P
-G
N
D
1
D-GND
6
TO
LCC(P15)
52
4
V
3
WH_SW
6
D
-GND
7
12V
8
D
-GND
PS-187
95
V
N
10
NC(D-GND)
11
3.3V
CN5(B04P-VH-B)
12
FW
CN5
12V
1
B12B-XL
1
12V
2
NC
2
NC
3
CN26
(FROM
-
P4)
3
NC
4
B
0
3
B
-P
H
-K
-R
(AC-WH
harness
)
CN7(B8P-VH-B)
CN1
FW
1
B32B-PHDSS-B
1
P-GND
2
2N
C
P-GND
3
3
P-GND
4
B2P3-VH-R
(SCN-WH
harness
)
NC(P-GND)
5
RE
L
2
P
IN
P
P-GND
6
TO
INSERTOR(P16)
WH
PWB
P-GND
7
TO
LCC(P15)
(SCN-WH
harness
)
NC(P-GND)
8
CN2
R
E
L
2
PIN
P
1
JPN:OPTION
NC
2
EX100V:OPTION
CN8(B7P-VH-B)
3
EX120V:OPTION
NC(24V1)
1
(DC
m
ain
harness)
NAME
B2P3VH-BL
EX200V:OPTION
24V1
2
5VL
MFP
24V2
3
To
P2
5VO
FAX
CN3
24V3
4
5VN
OTHER
1
RE
L
2
P
IN
P
24V3
5
24V1
ENGINE
NC
2
24V4
6
TO
LCC(P15)
24V2
ENGINE
3
24V5
7
TO
INSERTOR(P16)
24V3
ENGINE
B2P3-VH
J
PN:STANDARD
24V4
LCC,DESK
EX100V:OPTION
JPN:OPTION
24V5
FINISHER
CN4
EX120V:OPTION
EX100V:OPTION
EX200V:OPTION
EX120V:OPTION
EX200V:OPTION
PHNR-3-H
+
BU03P-TR-P-H
NC
3
To
P15,
P15-1
B4P(5-3)-VH
(Paper
feed
main
harness
PA)
WH
P-GND
26
28
30
PSFM_V
PSCF_LD
WH-L(SCAN)
2
1
WH-N(SCAN)
WH-L(SCAN)
MOTHER
P
WB
PCU
PWB
DC
PWB
1
L_WH
L_WH
D-GND
WH-N(SCAN)
PSU
FAN
2
P
SCF_LD
2
3
1
3
1
P
SFM_V
P-GND
5
D-GND
WH-L(DESK1)
2
4
1
WH-N(DESK1)
WH-L
WH-N
24V2
24V2
2
1
WH
WH
2
WH-N(SCAN)
2
1
WH-L(SCAN)
1
2
WH-N(SCAN)
2
1
WH-L(SCAN)
1
WH_N(LSU)
WH_L(LSU)
WH_L(DESK/LCC)
WH_N(DESK/LCC)
SCANNER
U
NIT
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