Read Sharp MX-3500N / MX-3501N / MX-4500N / MX-4501N (serv.man10) Service Manual online
MX-3500N/4500N/3501N/4501N BLOCK DIAGRAM / ブロック図 1 – 3
3. PCU PWB
IC
1
CP
U
H
8
S/
2
373
IC
5
SR
A
M
(1
M
b
it
)
FL
A
S
H
R
O
M
(1
6
M
b
it
)
IC
6
EEP
R
O
M
(64kbit)
IC
9
PM
C
A
S
IC
IC
8
I/
O
A
S
IC
IC
7
DF
F
LC
X
5
7
4
I2C
B
u
s
A
d
d
ress
B
us[
2
0:
0
]
DA
T
A
B
u
s[
1
5
:0
]
IC
27
/
IC3
0/
IC
31/
IC
37
MU
X
H
C
151
x5
CLOCK
LCC
FI
N
IS
H
E
R
DE
S
K
UA
R
T
UA
R
T
UA
R
T
IC
4
RESETIC
An
al
o
g
I
n
p
u
t
Fu
se
r
T
h
e
rm
is
to
r(
T
H
_U
M
/
L
M
/
U
S
)
T
o
ner
D
et
ec
to
r(
T
C
S
_K/
C
/
M
/
Y
)
P
ro
c
es
s
C
o
n
t.
se
ns
o
r
(P
CS
_K
/
C
L
)
R
e
si
st
se
n
so
r
(R
E
G
S
_F
/
R
)
To
LS
U
Vi
a
Mo
th
e
r
Optional
To
MF
P
C
Vi
a
Mo
th
e
r
UA
RT
UA
RT
DC
P
o
we
r
Suppl
y
X1
Xt
a
l
1
9
.6
60
8M
H
z
IC
2
Spread
Spectrum
Se
n
so
r
In
p
u
t
PPD
2
Sen
so
r
In
pu
t
CP
F
D
1
/
CP
F
D
2/
H
P
O
S
/
P
P
D
1
/
DH
P
D
_C
L
/
DH
P
D
_K
/
PO
D
3
/
P
O
D
2
DS
W
_F
/
DS
W
_R/D
S
W
_C
/
CL
U
D
1
/
CL
U
D
2
/
CS
P
D
1
/
C
S
P
D
2
/
1TUD_K
/1TUD_CL
MUX
HC
1
5
1
CR
U
M
CRUM_K/C/M/Y
I2
C
B
u
s
IC
7
1
D/
A
Con
v
(T
C
S
/
R
E
G
S
c
o
n
t)
Lo
a
d
C
o
n
tr
o
l
O
u
tp
u
t
Co
in
v
e
nd
or
(O
p
tio
n
a
l)
Stepping
Motor
C
ontrol
Pout
Motor(POM)
/
ADU
Motor(ADML)
/
Shifter
Motor(OSM)/
Resist
Motor(RRM)
/
P
SF
Motor(PFM)
Dr
u
m
M
o
to
r
B
K(
D
M
_K
)/
Dr
u
m
M
o
to
r
C
L
(DM
_C
L
)
Fu
se
r
M
o
to
r(
F
U
M
)
Be
lt
M
o
to
r
(B
T
M
)
Fus
e
r
u
ni
t
HL
c
o
n
tr
o
l
HL
_UM
/
L
M
/
US
S
e
ns
or
In
p
u
t
CS
S
1
1-
14
/
C
SS
21-
2
4
PO
D
1
AP
P
D
1
/
AP
P
D
2
Lo
ad
c
o
n
tr
o
l
O
u
tp
u
t
MP
GS
/
C
P
U
C
1
/
C
P
U
C
2
/
PCS
S
/
C
P
F
C
/
L
S
U
S
S
1
/L
S
U
S
S
2
(O
p
ti
o
n
a
l)
/
MP
UC
/
M
P
F
S
/
1
T
UR
C
FA
N
M
o
to
r
Co
nt
ro
l
PS
F
A
N
(PS
F
M
)
/
Oz
o
n
e
F
A
N
(O
Z
F
M
)
/
Po
u
t
F
A
N
(P
O
F
M
_F
/
P
O
F
M
_R
)
Flash
W
rite
Protect
HV
MC
/
T
C
unit
3-w
ire
ds
eria
l
Dr
u
m
L
am
p
(DL_K/C/M/Y)
PW
M
DC
Mo
to
r
C
o
n
tr
o
l
DV
M
o
to
r
B
K(
D
V
M
_K)
/
DV
M
o
to
r
C
L
(DV
M
_C
L
)
P
a
p
e
r
F
e
e
d
M
ot
or
(C
P
F
M
)
Se
n
so
r
In
pu
t
C
S
S
1
/
C
P
E
D2
/
C
SS2
/
C
P
E
D1
M
P
F
D
/M
P
E
D/C
P
W
D
1
1
-
1
2
TF
D
2
/
1
TN
F
D
/
W
E
N
D
D
/
W
IN
ID
Mo
to
r
L
o
c
k
D
e
te
c
t
FA
N
_L
D
1-
2
/
D
V
M
C
_LD
/
D
V
M
B
_LD
/
PFM
_LD
/
F
U
M
_L
D
F
u
se
rT
h
e
rm
is
to
ro
p
e
n
d
e
te
c
t
TH
O
P
E
N
_UM/
L
M
/
US
Sen
so
r
In
pu
t
DVSET
(K/C/M/Y)
DRDET
(K/C/M/Y)
IC
7
3
An
a
lo
g
MU
X
An
a
lo
g
I
n
p
u
t
Te
m
p
/
H
u
m
se
n
so
r(
T
H
_M
/
H
UD_
M)
LS
U
T
h
e
rm
is
to
r(
T
H
1
_LS
U
)
DV
d
e
te
c
to
r
(D
V
T
YP
_C/
M
/
Y
/
K
)
M
u
lt
i-
by
pa
ss
tr
a
y
w
idt
h
sen
so
r(
M
P
W
D
)
FW
Se
n
so
r
In
p
u
t
CO
IN
V
E
N
D
O
R
(O
p
tio
n
a
l)
CV
_C
L
C
O
P
Y
/
CV
_C
O
P
Y
Lo
a
d
o
u
tp
u
t
Me
c
h
an
ic
al
Co
unt
e
r
(O
p
ti
o
n
a
l)
PN
C
_K
/
PN
C_
C
L
Syncronous
Motor
Toner
Motor
(TNM_K/C/M/Y)
Waste
Toner
Motor(WTNM)
DC
M
o
to
r
Li
ft
U
p
M
o
to
r
(CLUM1/CLUM2)
Se
n
so
r
In
pu
t
DS
W
_A
D
U/
T
F
D3
/
M
P
L
D
/
M
T
O
P1
/
M
T
O
P2
/
M
P
E
D
MU
X
HC
1
5
1
RD
I/
F
P
W
B
Sy
n
c
ro
n
o
u
s
M
o
to
r
Fu
se
r
C
le
a
n
in
g
M
o
to
r
(FUCLNM)
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