Sharp MX-DE20 Service Manual ▷ View online
MX-DE20 MAINTENANCE 3 – 8
L 3DSHUIHHGWUD\SDSHUSDVVVHQVRU
M 3DSHUIHHGWUD\SDSHUSDVVVHQVRU
1) Remove the tandem tray.
2) Remove the level transport unit.
3) Remove the connectors and remo ve the p aper feed tr ay 3
M 3DSHUIHHGWUD\SDSHUSDVVVHQVRU
1) Remove the tandem tray.
2) Remove the level transport unit.
3) Remove the connectors and remo ve the p aper feed tr ay 3
paper pass sensor 1 (a) and the paper feed tray 3 paper pass
sensor 2 (b).
N /HYHOWUDQVSRUWUROOHU5
O /HYHOWUDQVSRUWUROOHU/
1) Remove the tandem tray.
2) Remove the level transport unit.
3) Remove the pins, the e-rings, the pulleys and the bearings.
O /HYHOWUDQVSRUWUROOHU/
1) Remove the tandem tray.
2) Remove the level transport unit.
3) Remove the pins, the e-rings, the pulleys and the bearings.
4) Remove the screws ans the earth plates.
Remove the e-rings and the bearings.
Remov the level transport roller L (a) and the level transport
Remov the level transport roller L (a) and the level transport
roller R (b).
a
b
b
a
MX-DE20 ELECTRICAL SECTION 4 – 1
MX-DE20
Service Manual
[4] ELECTRICAL SECTION
1. Block diagram
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
1/2
P
aper f
eed tr
a
y
2
tr
anspor
t clutch
P
aper f
eed tr
a
y
2
paper f
eed clutch
P
aper f
eed tr
a
y
2
lift-up motor
P
aper f
eed tr
a
y
2
attachment detection detector
P
aper f
eed tr
a
y
2
paper rear edge detector 1
P
aper f
eed tr
a
y
2
paper rear edge detector 2
P
aper f
eed tr
a
y
2
paper rear edge detector 3
P
aper f
eed tr
a
y
2
paper rear edge detector 4
P
aper f
eed tr
a
y
2
paper le
v
el detector
P
aper f
eed tr
a
y
2
paper tr
anspor
t detector
P
aper f
eed tr
a
y
2
paper empty detector
P
aper f
eed tr
a
y
2
upper limit detector
P
a
per f
eed tr
a
y
2
siz
e detection
PWB UN
P
aper f
eed tr
a
y
2
open/close detection
detector
Heater
Main unit
Saf
ety g
rounding
Saf
ety g
rounding
+24V
+5V
(
'
;
0
6
6
&
6
6
&
6
6
&
7
(
6
6
6
&
6
6
&
&
)
3
&
9
&
8
3
&
9
0
8
/
&
9
'
1
*
'
3
6
&
9
9
&
:
6
'
9
'
)
3
&
9
'
(
3
&
9
'
8
/
&
6
&
+:
&
/
;
0
MX-DE20 ELECTRICAL SECTION 4 – 2
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
8
7
65
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
2/2
Desk paper f
eed motor
Desk paper tr
anspor
t
clutch
P
a
per f
eed tr
a
y
1
paper f
eed clutch
P
a
per f
eed tr
a
y
2
paper f
eed clutch
P
a
per f
eed tr
a
y
1
lift-up motor
P
a
per f
eed tr
a
y
2
lift-up motor
Main unit
Output b
u
ff
er
Output b
u
ff
er
Input b
u
ff
er
Input b
u
ff
er
Input b
u
ff
er
Input b
u
ff
er
On-board
wr
ite circuit
Heater
Heater 2
Output b
u
ff
er
T
ransistor arr
a
y
Lift motor
dr
iv
e circuit
Lift motor
dr
iv
e circuit
Sensor input
circuit
Saf
ety
g
rounding
P
a
per f
e
ed tr
a
y
1
paper f
eed solenoid
P
a
per f
e
ed tr
a
y
2
paper f
eed solenoid
P
a
per f
e
ed tr
a
y
1
paper pass detector
P
a
per f
e
ed tr
a
y
1
paper pass detector 1
P
a
per f
e
ed tr
a
y
1
paper pass detector 2
P
a
per f
eed tr
a
y
1
upper limit detector
P
a
per f
eed tr
a
y
2
upper limit detector
P
a
per f
eed tr
a
y
1
mount detect connector
P
a
per f
eed tr
a
y
2
mount detect connector
P
a
per f
eed tr
a
y
1
paper quantity detector
P
a
per f
e
ed tr
a
y
2
paper quantity detector
T
a
ndem tr
a
y
installation detector
Right door open/close
detection detector
Solenoid
dr
iv
e circuit
Solenoid
dr
iv
e circuit
(
'
;
0
0
)
3
'
9
%
:
3
1,
$
0
0
(
'
1
$
7
6
8
3
'
6
8
3
'
9
+
*
+
8
3
&
3
$
',
.
&
5
7
3
'
9
&
)
3
'
9
9
&
)
3
'
0
/
'
9
9
0
/
'
]
+0
O
DW
;
.6
'
+:
.
6'
+
:
9
9
'
)
3
'
9
9
'
3
3
'
'
3
3
'
9
'
8
/
'
9
'
8
/
'
9
'
(
3
'
9
'
(
3
'
9
'
4
3
'
9
'
4
3
'
9
9
7
'
&
'
9
'
7
B
:
6
'
MX-DE20 ELECTRICAL SECTION 4 – 3
2. Actual wiring diagram
Main unit
TD CSS2 har
ness AR2
TD heater har
ness1 AR2
Saf
ety g
rounding
Heater1
Heater1
Hanes AR-CSS2
in the paper f
eed unit
Heater3
P
aper f
eed tr
a
y
2
upper limit detector
P
aper f
eed tr
a
y
2
paper empty detector
P
aper f
eed tr
a
y
2
paper tr
anspor
t detector
P
aper f
eed tr
a
y
2
open/close detection detector
P
aper f
eed tr
a
y
2
paper f
eed clutch
P
aper f
eed tr
a
y
2
tr
anspor
t clutch
P
aper f
eed tr
a
y
2
paper le
v
el detector
P
aper f
eed tr
a
y
2
lift-up motor
P
aper f
eed tr
a
y
4
tr
anspor
t clutch
P
aper f
eed tr
a
y
3
tr
anspor
t clutch
Desk paper tr
anspor
t clutch
Desk paper f
eed motor
P
aper f
eed tr
a
y
4
lift-up motor
P
aper f
eed tr
a
y
3
lift-up motor
P
aper f
eed tr
a
y
4
upper limit detector
P
aper f
eed tr
a
y
4
paper empty detector
P
aper f
eed tr
a
y
4
paper quantity detector
Ta
ndem tray installation
detector
TD main har
ness AR2
TD dr
iv
e har
ness AR2
Heater har
ness2 AR
TD Machine connection
har
ness AR2
P
aper f
eed tr
a
y
3
upper limit detector
P
aper f
eed tr
a
y
3
paper empty detector
TD Main har
ness AR2
TD
V
e
rtical tr
anspor
t
har
ness AR2
P
aper f
eed tr
a
y
3
paper quantity detector
Paper feed tray3
paper pass sensor 1
Paper feed tray3
paper pass sensor 2
Paper feed solenoid
(Paper feed tray 4)
Paper feed solenoid
(Paper feed tray 3)
Paper feed tray 2
attachment detection detector
TD
T
ranspor
t unit har
ness AR2
2CS (Machine control)
4CS
(T
andem2)
3CS
(T
andem1)
Paper feed tray 4
paper pass detector
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