Read Sharp MX-1800N (serv.man19) Service Manual online
MX-1800N ELECTRICAL SECTION 11 – 3
C. PCU PWB
IC
1
CP
U
H8
S/2373
IC5
SRAM
(1M
b
it
)
F
L
ASH
ROM
(16M
bit)
IC
6
EEP
R
O
M
6
4kbi
t)
IC
9
PMC
A
S
IC
IC8
I/O
A
SIC
IC7
DFF
LCX
5
7
4
B
u
s
DATABus
[15:0]
IC27/IC30/IC31/IC37
MUX
HC151x5
FINISHER
DESK
UA
R
T
UA
R
T
IC4
RESET
IC
Analog
Input
Fuser
T
hermistr
(TH_UM/LM/US)
Toner
D
etector
(TCS_K/C/M/Y)
Process
C
ont.
sensor
(PCS_K/CL)
Resist
sensor
(REGS_F/R)
To
LS
U
Via
Mo
ther
Optional
To
MF
PC
Via
Mo
ther
UAR
T
UAR
T
DC
Power
Supply
X1
Xtal
19.6608MHz
Sensor
Input
PP
D2
Sen
so
r
In
p
u
t
CP
F
D
1
/
C
P
F
D
2
/
H
P
O
S
/
P
P
D
1
/
D
H
PD_CL
/
DHPD_K
/
PO
D3
/
P
O
D
2
DSW_F
/
D
SW_R
/
D
SW_C
/
C
L
U
D
1/
C
L
U
D
2/
CS
P
D
1
/
C
S
PD
2
/
1TUD_K
/1
TUD_CL
MU
X
HC
15
1
CRUM
C
R
UM_K/C
/M/
Y
I2
C
B
u
s
IC71
D/A
Conv
(TCS/REGS
cont)
Load
Control
O
utput
Coi
n
vendor
(O
ptional)
S
te
pping
M
o
to
r
C
o
n
tr
o
l
P
o
ut
M
otor
P
O
M)
/
A
DU
M
o
to
r
A
D
M
L
)
/
Shifter
M
ot
or
OS
M)
/
Resist
M
otor
R
R
M)
/
P
S
F
Motor
PF
M)
D
rum
M
otor
B
K
(D
M
_K)
/
Drum
Motor
CL
(D
M
_CL)
Fuser
M
otor
(FU
M
)
Fuser
uni
t
HL
control
HL
_UM/
L
M
/US
Sensor
In
put
C
S
S
11-1
4
/
C
SS21
-24
POD
1
A
P
P
D
1/A
P
P
D
2
Load
contr
o
l
Output
MPG
S
/
C
PU
C1
/
C
PUC
2
/
PC
S
S
/
C
P
F
C
/
L
S
U
S
S
1
/L
SUS
S
2(O
pti
o
n
a
l)
/
MPU
C
/
M
PF
S
/
1
T
UR
C
FAN
Motor
C
ontrol
PS
FAN
(PSFM)
/
Oz
o
n
e
F
A
N
(O
Z
F
M
)
/
Pout
FAN
(P
OFM
_
F
/
P
O
F
M
_
R
)
HV
MC
/
T
C
unit
3-wiredserial
Drum
L
amp
(DL_
K/C/M/
Y)
PWM
DC
Motor
Control
D
V
M
o
to
rB
K(
D
V
M
_
K
)
/
DV
Mo
to
r
C
L
(D
V
M_CL)
Paper
F
e
ed
M
otor
(CP
F
M)
Sensor
In
put
C
S
S1
/
C
P
E
D2
/
C
SS
2
/
CP
ED1
MP
F
D
/
M
P
E
D
/
C
P
W
D
1
1
-1
2
T
F
D
2/1
T
N
F
D
/
W
E
N
D
D
/W
IN
ID
Motor
L
ock
D
etect
FAN_LD1-2
/
DVM
C_L
D
/
DVM
B
_LD
/
P
F
M_L
D
/
F
U
M
_LD
Fuser
T
he
rmi
stor
o
pen
detect
TH
OP
EN
_U
M
/
LM
Sen
so
r
In
p
u
t
DV
SE
T
(K
/C
/M
/Y
)
DR
DET
(K/C
/M
/Y)
IC73
Ana
log
MU
X
Analog
Input
Temp/Hum
sensor
(TH_M/HUD_M)
LSU
T
hermistor
(TH1_LSU)
DV
detector
(DVTYP_C/M/Y/K)
Multi-bypass
tray
width
snesor
(MPWD)
FW
S
ensor
In
p
u
t
COI
N
V
END
O
R
(Optional)
CV_C
LCO
PY
/
CV
_
C
O
P
Y
Load
output
Mec
h
anical
Coun
ter
(O
ptional)
PN
C_K
/
PN
C_CL
Sy
ncr
o
nou
s
M
otor
Tone
r
M
o
tor
(T
NM
_K/C
/M
/Y)
Waste
T
o
n
e
r
M
otor
(WTNM
)
DC
Motor
Lif
t
U
p
M
otor
(CLU
M1
/CLUM
2
)
Sensor
In
put
DSW
_
ADU
/
TFD
3
/
M
P
L
D
/M
T
O
P
1
/M
T
O
P
2/M
P
E
D
MUX
H
C
151
RD
I/F
PWB
Write
Protect
Address
B
us[
2
0:0]
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