Sharp MX-LC12 (serv.man10) Service Manual ▷ View online
MX-LC12 DISASSEMBLY AND ASSEMBLY 6 – 5
E. Torque limiter
1) Remove the paper feed unit.
2) Remove the cover.
3) Remove the E-ring and the screw, and remove the parts.
2) Remove the cover.
3) Remove the E-ring and the screw, and remove the parts.
4) Lift the shaft, and remove the torque limiter.
F. Transport roller
1)
Remove the paper feed unit.
2)
Remove the cover.
3)
Remove the spring, and remove the screw.
4)
Remove the plate cover, and remove the lever.
5)
Remove the clutch.
6)
Remove the screw and the E-ring, and remove the parts.
7)
Remove the transport roller.
MX-LC12 MAINTENANCE 7 – 1
MX-LC12
Service Manual
[7] MAINTENANCE
1. Maintenance system table
: Checking (clean, replace or adjust as required) { : Cleaning
: Replace
∆ : Adjust
: Lubricate : Position shift
No.
Part name
When
calling
Main unit
maintenance cycle
Remarks
1
Pick-up roller/each paper feed roller
{
As a rough guide, these rollers should be replaced when the LCC paper feed
counter reaches a value of 200K (Sim22-9) .
counter reaches a value of 200K (Sim22-9) .
2
Torque limiter
As a rough guide, the torque limiter should be replaced when the LCC paper
feed counter reaches a value of 800K (Sim22-9).
feed counter reaches a value of 800K (Sim22-9).
3
Each transport rollers
{
4
Each transport paper guides
{
{
5
Each gears
6
Each belts
7
Each sensors
MX-LC12 ELECTRICAL SECTION 8 – 1
MX-LC12
Service Manual
[8] ELECTRICAL SECTION
1. Electronic/mechanical parts relationship diagram
LRE
+5V
1
GND2
2
3
3
+5V
B8B-PH-K-S
CN-B
GND2
3
1
6
4
8
2
7
5
(/LTLS)
+24V
+5V
GND2
LRE
LDD
LDD
3
2
1
2
3
3
1
LDD
+5V
1
GND2
2
3
3
3
2
1
2
3
3
1
10
16
14
1
18
12
5
+5V
GND1
11
17
/L
TRC
7
GND2
GND2
/LPFS
+24V
CN-C
+24V
15
+5V
4
13
/L
T
O
D
20
22
9
B24B-PHDSS-B
2
8
/LPED
+5V
23
+5VR
24
3
/LPFD
+5V
19
GND2
/LPFC
21
GND2
GND2
GND2
+5V
EXIN2
EXIN1
LUD
6
+5V
1
2
3
2
3
/LTOD
GND2
GND2
1
2
LLM
LLM(GND)
5
4
LPFM-T
+24V
GND1
/LPFM-EN
GND1
/LPFM-EN
/LPFM-CLK
2
3
3
1
+5V
3
2
1
LCD
GND2
GND2
1
3
2
3
2
1
1
3
2
2
1
3
N.C.
+5V
LLM
5
GND2
6
9
N.C.
7
B14B-PHDSS-B
2
8
3
GND2
/LPFM-EN
LCD
4
LPFM-T
10
LLM(GND)
11
/LPFM-CLK
CN-E
1
GND1
12
GND1
13
+24V(LOSW)
14
2
1
GND2
/LPED
/LPED
LUD
+5V
+5V
1
GND2
2
3
3
1
+5V
3
2
/LPFC
/LTRC
3
2
1
+24V
+24V
N.C.
CN-D
B10B-PHDSS-B
B10B-PHDSS-B
2
1
3
4
5
6
4
5
6
+24V(L24VM)
+24V(LLSW)
GND2
GND2
7
9
10
10
GND2
GND2
8
+24V(LDSW)
GND2
GND2
+24V(LLSW)
+24V(LLSW)
+24V(L24VM)
NC
3
2
1
COM
ON
ON
NC
3
2
1
COM
ON
ON
LCC MAIN PWB
N.C.
LPFS
GND1
1
2
3
2
3
GND2
1
3
+5VR
2
/LPFD
LLM
LDD
LUD
LPED
LLSW
LPFM
LTOD
LCD
LPFS
LPFD
LTRC
LPFC
LDSW
LRE
MX-LC12 ELECTRICAL SECTION 8 – 2
2. Block diagram
LPFM
LLM
CPU
(H8/3687HV)
EEPROM
LCC
M
AIN
PWB
CR
MX-LC12
GND2
Xtal
7.37MHz
LUD
LDD
LPED
LPFD
LTOD
LCD
LRE
LTRC
LPFC
LPFS
LLSW
LDSW
+24V
+24V
+24V
+5V
+5V
+5V
+5V+5V
+5V
+5V
+5V
(TD62003AP)
+24V
-
-
/LPFM
/LPFM-CLK
LPFM-T
/RXD-LCC
/TXD-LCC
/DSR-LCC
/DTR-LCC
RES-LCC
/TRC-LCC
+5V
GND2
+24V
GND1
AC
-L
AC
-N
Heater
Ground
On-board
wr
ite
c
ircuit
Output
b
u
ff
er
Output
b
u
ff
er
+24V
+5V
Input
b
u
ff
er
Input
b
u
ff
er
Input
b
u
ff
er
Input
b
u
ff
er
T
ransistor
arr
a
y
Sensor
input
circuit
Current
control
circuit
Lift
m
otor
dr
iv
e
c
ircuit
P
o
ly
s
w
itch
1.1A
L24VM
LDSW
LLSW
Upper
limit
monitoring
circuit
Upper
d
oor
monitoring
c
ircuit
24V
m
onitoring
circuit
Upper
d
oor
latch
switch
Upper
limit
switch
LCC
lift
m
otor
MX-6240N/7040N
F
F
Tray
upper
limit
sensor
Transport
sensor
Tray
lower
limit
sensor
Paper-on-tray
s
ensor
Main
unit
connection
sensor
Tray
insertion
sensor
Lift
motor
encoder
sensor
LCC
p
aper
feed
clutch
LCC
transport
clutch
LCC
p
aper
feed
solenoid
Click on the first or last page to see other MX-LC12 (serv.man10) service manuals if exist.