Read Sharp MX-FN12 Service Manual 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/
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