Sharp MX-LC11 Service Manual ▷ View online
MX-LC11 ELECTRICAL SECTION 4 – 3
4
3
2
1
A
B
C
D
1
2
3
4
LLM
LRE
LRE
+5V
1
GND2
2
3
3
1
2
LLM
LLM(GND)
LCC
+5V
LTOD
12
11
10
9
9
10
11
12
10
11
12
3
6
5
3
SMP-18V-NC
5
2
1
7
7
2
SMR-18V-N
8
2
1
3
4
6
8
1
4
1
2
2
1
2
1
GND2
1
5
4
/LPED
2
LPFM-T
+24V
GND1
GND1
LUD
LUD
LPED
/LPFM-EN
/LPFM-CLK
2
LPFM
3
+5V
1
GND2
2
3
3
NC
1
+5V
3
PHR-5
1
1
/LTOD
3
3
2
1
COM
LPFS
LLSW
ON
3
2
GND2
LPFC
1
13
6
3
11
12
12
8
9
9
ELP-15V
4
15
10
2
7
5
14
NC
3
2
1
COM
LDSW
ON
15
16
17
18
16
17
18
13
14
14
13
14
15
16
17
18
14
15
16
17
18
< Paper feed unit >
1
1
2
2
2
3
3
3
2
1
1
2
4
12
ELP-12V
5
+5V
3
2
1
LCD
LCD
GND2
ELP-02V
ELR-02V
1
3
ELP-03V
2
3
2
1
3
2
1
2
3
3
1
ELR-03V
SMP-03V-NC
SMR-03V-N
SMR-03V-N
SMP-03V-NC
SMP-03V-NC
SMR-02V-N
SMP-02V-NC
SMR-03V-N
LDD
LDD
+5V
1
GND2
2
3
3
3
2
1
2
3
3
1
SMP-03V-NC
SMR-03V-N
1
SMP-03V-NC
3
2
SMR-03V-N
2
1
3
GND2
1
3
+5VR
2
/LPFD
LPFD
1
2
2
1
2
2
ELR-04NV
ELP-04NV
4
3
4
3
SMR-03V-N
SMP-03V-NC
3
2
1
2
1
3
Main unit
/LTRC
3
2
1
+24V
N.C.
N.C.
LTRC
1
13
6
3
11
12
12
8
9
9
ELR-15V
4
15
10
2
7
5
14
4
12
ELR-12V
5
N.C.
N.C.
/TXD-LCC
/RXD-LCC
/DTR-LCC
/DSR-LCC
RES-LCC
F.G.
+5V
N.C.
/TXD-LCC
/RXD-LCC
/DTR-LCC
/DSR-LCC
RES-LCC
F.G.
+5V
GND2
+24V
GND1
/TRC-LCC
N.C.
N.C.
+24V
GND1
/TRC-LCC
N.C.
N.C.
AC-L(H)
F.G.
AC-N(H)
F.G.
AC-N(H)
179228-3
PS-187-3V
FPS-187
PHR-3
CZHR-03V-S
PHR-3
PHR-3
Tray paper empty detector
Tray upper limit sensor
LCC paper feed solenoid
LCC paper feed clutch
Paper pass detector
LCC transport clutch
Upper limit switch
Door switch
Connect detector
Tray close detector
LCC lift motor
Paper feed motor
Heater
Ground
Lift motor rotaly encoder sensor
Tray downer limit detector
Main unit connection
MX-LC11 OPERATIONAL DESCRIPTIONS 5 – 1
MX-LC11
Service Manual
[5] OPERATIONAL DESCRIPTIONS
1. Electrical and mechanical relation diagram
SMP-03V-NC
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
㪣㪚㪚㩷㪤㪘㪠㪥㩷㩷㪧㪮㪙
3
2
1
2
3
3
1
SMR-03V-N
LDD
+5V
1
GND2
2
3
3
3
2
1
2
3
3
1
SMP-03V-NC
SMR-03V-N
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
9
10
11
12
10
11
12
6
3
SMP-18V-NC
5
1
7
2
8
4
15
16
17
18
16
17
18
13
14
14
+5V
1
2
3
2
3
/LTOD
GND2
GND2
1
1
2
2
2
3
3
3
SMR-03V-N
SMP-03V-NC
179228-3
SMP-03V-NC
SMR-03V-N
ELR-03V
1
2
LLM
LLM(GND)
5
4
LPFM-T
+24V
GND1
/LPFM-EN
GND1
/LPFM-EN
/LPFM-CLK
2
3
3
PHR-5
1
1
+5V
3
2
1
LCD
GND2
GND2
1
3
ELP-03V
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
7
12
11
10
9
3
5
2
SMR-18V-N
2
3
6
8
1
4
1
2
1
2
1
GND2
1
/LPED
2
LUD
+5V
+5V
1
GND2
2
3
3
1
+5V
3
3
2
13
14
15
16
17
18
14
15
16
17
18
SMP-03V-NC
SMR-02V-N
SMP-02V-NC
SMR-03V-N
GND2
1
3
+5VR
2
/LPFD
SMR-03V-N
SMP-03V-NC
3
2
1
2
1
3
/LTRC
3
2
1
+24V
N.C.
N.C.
PHR-3
CZHR-03V-S
PHR-3
PHR-3
2
1
3
4
5
6
+24V(L24VM)
+24V(LLSW)
GND2
CN-D
B10B-PHDSS-B
7
9
10
GND2
GND2
8
+24V(LDSW)
GND2
GND2
+24V(LLSW)
+24V(L24VM)
NC
3
2
1
COM
ON
ON
NC
3
2
1
COM
ON
ON
1
2
2
1
2
2
ELR-04NV
ELP-04NV
4
3
4
3
PS-187-3V
FPS-187
LRE
LDD
LCCD (LTOD)
LTRC
LUD
LPED
LLSW
LDSW
LLM
LPFM
LCLD
(LCD)
LPFS
LPFC
LPFD
MX-LC11 OPERATIONAL DESCRIPTIONS 5 – 2
Signal
name
Name
Type
Function/operation
LCCD
(LTOD)
(LTOD)
Connect detector
Transmission type
Detects connection to the main unit.
LCLD
(LCD)
(LCD)
Tray close detector
Transmission type
The tray insertion is detected.
LDD
Tray downer limit detector
Transmission type
The lower limit of the tray is detected.
LDSW
Door switch
Micro switch
Detects open/close of the upper door.
LLM
Lift motor
Brush motor
Lifts the paper feed table.
LLSW
Upper limit switch
Micro switch
Protects the paper feed unit from breakage due to lifting the tray too much.
LPED
Tray paper empty detector
Transmission type
Detects paper presence/empty on the paper tray.
LPFC
Paper feed clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller.
LPFD
Paper pass detector
Transmission type
Detects paper transport.
LPFM
Paper feed motor
Brushless motor
Drives the paper feed, and the paper transport section.
LPFS
Paper feed solenoid
Electromagnetic solenoid
Presses the paper pickup roller onto paper.
LRE
Lift motor rotaly encoder sensor
Transmission type
The lift motor rotation is detected.
LTRC
Transport clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller.
LUD
Tray upper limit sensor
Transmission type
Detects the paper upper limit position.
No.
Name
Function/operation
1
Paper pickup roller
Feeds paper to the paper feed roller.
2
Paper feed roller
Feeds paper to the paper transport section.
3
Transport roller (Drive)
Transports paper from the paper feed roller to the main unit.
4
Transport roller (Idle)
Applies a pressure to paper and the transport roller to provide a transport power of the transport roller to
paper.
paper.
5
Separation roller
Separates paper to prevent double feed.
MX-LC11 OPERATIONAL DESCRIPTIONS 5 – 3
2. Lift Operation
When the power to the main unit is turned ON with the tray at a
midway position (that is, a position where both the upper limit sen-
sor (LUD) and tray downer limit detector (LDD) are OFF) or with the
tray at the lower limit position (where the tray downer limit detector
LDD is ON), the main unit issues a lift-up request and, in response,
the lift motor is turned ON to lift the tray.
If the tray paper empty detector (LPED) turns ON within 800
encoder pulses of the start of tray lift, the lift motor is temporarily
turned OFF to stop the tray, and then the paper feed solenoid is
turned ON to lower the pick roller. Subsequently, the lift motor is
turned ON, and the tray is lifted to and stopped at a position where
the upper limit sensor (LUD) is turned ON.
If the tray paper empty detector (LPED) does NOT turn ON within
800 pulses of the start of tray lift, the paper feed solenoid is turned
ON with the lift motor remaining ON, and the pick roller is lowered.
The lift motor stops when the tray reaches a position where the
upper limit sensor (LUD) is turned ON, and subsequently the paper
feed solenoid is turned OFF.
Lift operation is not performed if the power to the main unit is turned
ON with the tray at a position where it can feed paper.
When the tray is drawn out, it lowers by its own weight.
midway position (that is, a position where both the upper limit sen-
sor (LUD) and tray downer limit detector (LDD) are OFF) or with the
tray at the lower limit position (where the tray downer limit detector
LDD is ON), the main unit issues a lift-up request and, in response,
the lift motor is turned ON to lift the tray.
If the tray paper empty detector (LPED) turns ON within 800
encoder pulses of the start of tray lift, the lift motor is temporarily
turned OFF to stop the tray, and then the paper feed solenoid is
turned ON to lower the pick roller. Subsequently, the lift motor is
turned ON, and the tray is lifted to and stopped at a position where
the upper limit sensor (LUD) is turned ON.
If the tray paper empty detector (LPED) does NOT turn ON within
800 pulses of the start of tray lift, the paper feed solenoid is turned
ON with the lift motor remaining ON, and the pick roller is lowered.
The lift motor stops when the tray reaches a position where the
upper limit sensor (LUD) is turned ON, and subsequently the paper
feed solenoid is turned OFF.
Lift operation is not performed if the power to the main unit is turned
ON with the tray at a position where it can feed paper.
When the tray is drawn out, it lowers by its own weight.
Lift operation (where LPED turns ON within 800 encoder
pulses of the start of lift operation)
pulses of the start of lift operation)
Lift operation (where LPED does NOT turn ON within 800
encoder pulses of the start of lift operation)
encoder pulses of the start of lift operation)
3. Paper Feed Operation
Paper feed operation can be performed if the tray is stationary at a
position where it can feed paper (with the upper limit sensor (LUD)
being ON) and there is paper in the tray.
When paper feed takes place, the paper feed motor (LPFM), the
transport clutch (LTRC), the paper feed clutch (LPFC), and the
paper feed solenoid (LPFS) operate with the following timings:
position where it can feed paper (with the upper limit sensor (LUD)
being ON) and there is paper in the tray.
When paper feed takes place, the paper feed motor (LPFM), the
transport clutch (LTRC), the paper feed clutch (LPFC), and the
paper feed solenoid (LPFS) operate with the following timings:
When the transport clutch (LTRC) turns ON with the paper feed
motor (LPFM) is ON (rotating), the transport roller starts rotating.
When the paper feed clutch (LPFC) turns ON in this state, the
paper feed and paper pick up rollers start rotating.
When the paper feed solenoid (LPFS) turns ON, the paper pick up
roller is pushed down to press paper.
motor (LPFM) is ON (rotating), the transport roller starts rotating.
When the paper feed clutch (LPFC) turns ON in this state, the
paper feed and paper pick up rollers start rotating.
When the paper feed solenoid (LPFS) turns ON, the paper pick up
roller is pushed down to press paper.
Paper feed time chart
*1: Operation stops only if the main unit synchronization signal is output.
When operation is stopped, the ON/OFF timing for each load is delayed by the stoppage time because each timer is suspended during the
stoppage.
To ensure efficient job processing, operation is not stopped under normal conditions.
When operation is stopped, the ON/OFF timing for each load is delayed by the stoppage time because each timer is suspended during the
stoppage.
To ensure efficient job processing, operation is not stopped under normal conditions.
(lift motor output)
(Tray downer limit detector)
(upper limit sensor)
(Tray paper empty detector)
(solenoid)
(Lift motor rotaly encoder sensor)
200 msec
Within 800 pulses
LDD
LLM
LUD
LPED
LPFS
LRE
(lift motor output)
(Tray downer limit detector)
(upper limit sensor)
(Tray paper empty detector)
(solenoid)
(Lift motor rotaly encoder sensor)
LDD
LLM
LUD
LPED
LPFS
LRE
800
Start of job
Clearance-between-papers
control timer
control timer
Clearance-between-papers
control timer
control timer
PIC timer
Paper feed clutch
OFF timer
OFF timer
Start of 1st
paper feed
paper feed
Start of 2nd
paper feed
paper feed
Start of 3rd
paper feed
paper feed
Paper feed clutch
OFF timer
OFF timer
PIC timer
Paper feed speed
LPFM
(paper feed
motor)
(paper feed
motor)
LPFD
(paper pass
detector)
(paper pass
detector)
LPFC
LTRC
(paper feed
clutch)
clutch)
(transport
clutch)
clutch)
TRC
(main unit
synchronization
signal)
(main unit
synchronization
signal)
LPFS
(paper feed
solenoid)
(paper feed
solenoid)
suspended
on
off
on
off
on
off
on
off
on
off
*1
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