Sharp MX-FN12 Service Manual ▷ View online
MX-FN12 OPERATIONAL DESCRIPTIONS 4 – 6
B. Overall block diagram
+24VR
+24VR
+24V
+24V
+
5
V
+24V
+24VR
+3.3V
Chopping
circuit
(S
T
A
7
101
M
)
Chopping
circuit
(S
T
A
7
101
M
)
FPA
M
-F
+24V
Paper
alignment
m
otor
F
FPA
M
-R
+24V
Chopping
circuit
(S
T
A
7
101
M
)
Chopping
circuit
(S
T
A
7
101
M
)
Chopping
circuit
(S
T
A
7
101
M
)
+24VR
FD
RLM
FPD
M
+24VR
+24VR
FP
TM
Delivery
roller
lift
motor
Paper
delivery
m
otor
Paper
transport
m
otor
H
bridge
circuit
(S
T
A
4
5
7
C)
CP
U
(H8
S
/23
1
7
)
Staple
M
otor
Staple
home
position
sensor
Staple
empty
detector
Staple
lead
detector
H
bridge
circuit
(2
SB1
24
0x
4
)
F
TLM
T
ray
lift
m
otor
+24V
FPS
FP
G
S
+24V
+24V
FA
RL
S
Paddle
solenoid
Paper
gate
solenoid
Alignment
roller
lift
solenoid
T
ransistor
array
(T
D
62
00
3
AP)
Input
b
uffer
Fan
motor
drive
c
ircuit
(2
SB1
24
0)
FBCF
Control
board
c
ooling
fan
Input
b
uffer
Input
b
uffer
O
utput
b
uffer
O
utput
b
uffer
Input
b
uffer
P-
GN
D
S-
GN
D
F
G
FSCF
Stapler
Cooling
Fan
Fan
motor
drive
c
ircuit
(2
SB1
24
0)
FSS
W
Safety
s
w
itch
+
5
V
FP
R
D-C
FP
R
D-
R
+
5
V
+
5
V
FAP
H
PS-
R
FP
R
D-F
+
5
V
+
5
V
FAP
H
PS-F
FS
T
PD
+
5
V
+
5
V
FD
TLL
S
FP
L
D
+
5
V
FD
R
PS
+
5
V
+
5
V
FD
TUL
S
+
5
V
IF
M
AI
N
P
W
B
M
ain
unit
Paper
rear
edge
detector
F
Paper
alignment
plate
home
position
detector
F
Staple
tray
paper
detector
Paper
level
detector
Delivery
tray
lo
w
er
limt
detector
Delivery
tray
upper
limt
detector
Paper
pass
detector
FPPD1
Delivery
roller
position
detector
+
5
V
Staple
unit
FS
M
FS
H
PS
FSED
FS
L
D
3
-terminal
R
eg
Input
buffer
O
nboard
w
riting
circuit
Sensor
input
circuit
FBCF-
L
D
FSCF-
L
D
S
TLK
Paper
alignment
plate
home
position
detector
R
Paper
rear
edge
detector
R
Paper
rear
edge
detector
C
Paper
alignment
m
otor
R
FPDPD
FPAPD
FP
T
PD
FD
RL
PD
R
XD-FI
N/
R
ES-FI
N
D
TR
-FI
N/
DS
R
-FI
N/
TR
C-FI
N/
T
XD-FI
N/
MX-FN12 MAINTENANCE 5 – 1
MX-FN12
Service Manual
[5] MAINTENANCE
1. Maintenance system table
: Check : Clean
: Replace
: Adjust ✩: Lubricate
No.
Part name
30K
60K
90K
120K
150K
180K
210K
240K
270K
300K
Remark
1
Rear edge take-up roller
Replace as needed.
Supply of service parts
Supply of service parts
2
Staple cartridge
Replace at every 5K.
Replacement is made by the user.
1
2
MX-FN12 DISASSEMBLY AND ASSEMBLY 6 – 1
MX-FN12
Service Manual
[6] DISASSEMBLY AND ASSEMBLY
1. External view
A. Finisher
1)
Remove the hand screw from the finisher connection connec-
tor on the rear side of the machine, and remove the machine
connection harness from the finisher.
tor on the rear side of the machine, and remove the machine
connection harness from the finisher.
2)
Open the front cover of the finisher.
3)
Turn the separation lever to the left to separate the finisher
from the machine. Slide the finisher to the left until it stops.
from the machine. Slide the finisher to the left until it stops.
4)
While pushing the lock lever to the bottom, slide the finisher a
little to release the lock.
little to release the lock.
NOTE: To prevent against falling, do not slide the finisher exces-
sively with the lock released.
8.5 inch operation panel unit
10-00
U
U
Unit or part name
Page of detailed
procedures
procedures
Part kind
Maintenance work
Descriptions on icons in the disassembly and assembly procedures flowchart
: Unit
E
: Electrical parts
M
: Maintenance parts
P
: Parts
: Check
: Clean
: Replace
: Lubricate
: Adjust
Finisher
6-1
U
Paper pass unit
6-2
U
Front cabinet right
6-2
P
Rear cabinet
6-2
P
IF main PWB cover
6-2
P
Finisher upper paper guide
6-2
P
External view
MX-FN12 DISASSEMBLY AND ASSEMBLY 6 – 2
5)
Remove the finisher from the machine connection unit.
NOTE: When holding the finisher, hold the front frame side and the
rear frame side together.
(1) Paper pass unit
1)
Remove the screw, and remove the paper pass unit.
(2) Finisher upper paper guide
1)
Remove the screw, and slide the finisher upper paper guide to
the front side to remove.
the front side to remove.
(3) Front cabinet right
1)
Remove the screw, and remove the separation lever.
2)
Remove the screw, and remove the front cabinet right.
(4) Rear cabinet
1)
Remove the screw, and disengage the pawl and remove the
rear cabinet.
rear cabinet.
(5) IF main PWB cover
1)
Remove the screw, and slide the IF main PWB cover to the
front side to remove.
front side to remove.
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