SHARP MX-LCX3 Service Manual
SERVICE MANUAL
CODE: 00ZMXLCX3/S1E
DIGITAL FULL COLOR
MULTIFUNCTIONAL SYSTEM OPTION
LARGE CAPACITY TRAY
MODEL
CONTENTS
[1] PRODUCT OUTLINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[3] UNPACKING AND INSTALLATION
* For unpacking and installation, refer to the installation manual( [3] ).
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . . . . . . . 4-1
[5] OPERATIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[6] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
[7] MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[8] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
MX-LCX3
[9] SIMULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
[10] SELF DIAG MESSAGE AND TROUBLE CODE . . . . . . . . . . . . . . . . . 10-1
[11] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
This document has been published to be used
SHARP CORPORATION
for after sales service only.
The contents are subject to change without notice.
CONTENTS
[1] PRODUCT OUTLINE. . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[3] UNPACKING AND INSTALLATION
* For unpacking and installation, refer to the installation
manual( [3] ).
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
1. Motor, clutch, solenoid . . . . . . . . . . . . . . . . . . . . 4-1
2. PWB, sensor, switch, heater. . . . . . . . . . . . . . . . 4-2
[5] OPERATIONAL DESCRIPTION
1. Lift operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
2. Paper feed operation . . . . . . . . . . . . . . . . . . . . . 5-2
3. Paper empty detection . . . . . . . . . . . . . . . . . . . . 5-3
[6] DISASSEMBLY AND ASSEMBLY
1. Maintenance parts replacement procedures. . . . 6-1
2. Each unit removal . . . . . . . . . . . . . . . . . . . . . . . . 6-1
3. Major parts removal . . . . . . . . . . . . . . . . . . . . . . 6-3
[7] MAINTENANCE
1. Maintenance system table . . . . . . . . . . . . . . . . . 7-1
[8] ADJUSTMENTS
1. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
2. Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[9] SIMULATION
1. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
2. Details of trouble code . . . . . . . . . . . . . . . . . . . . 9-1
[10] SELF DIAG MESSAGE AND TROUBLE CODE
1. Self diag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
2. Trouble code list . . . . . . . . . . . . . . . . . . . . . . . . 10-2
3. Trouble code details . . . . . . . . . . . . . . . . . . . . . 10-2
[11] ELECTRICAL SECTION
1. Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
2. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3
3. Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . .11-5
MX-LCX3
[1] PRODUCT OUTLINE
This model is a large capacity paper feed tray installed to the main unit.
It stores 3,000 sheets, eliminating troublesome paper supply.
Service Manual
MX-LCX3
MX-LCX3 PRODUCT OUTLINE 1 – 1
MX-LCX3
[2] SPECIFICATIONS
Service Manual
Model Large capacity tray
Transport reference Center reference
Heat reserving heater
Paper capacity
Domestic Normal paper(64g/m
Overseas Normal paper(80g/m
2
,17 lbs bond) 3500 sheets
2
,21 lbs bond) 3000 sheets
Domestic: Heater kit support
Overseas: Service parts support
Paper size/type/weight Refer to Table 1
Paper size detection Not provided (Manually setting from the control panel of the main unit)
Paper type setting Refer to Table 2
Changeover by user Yes (Changeover by manager is allowed)
Paper size change system
Changeover by service man
(Adjustment of guide and entry of size) No
Domestic A3
Factory setting of paper size
Overseas, Inch series 11x17
Overseas, AB series A3
Remaining
paper detection
Tray lift time
Up max. 30 sec.
Down max. 15sec.
Paper empty and 6 steps
(100% ,83.3% ,66.7% ,50% ,33.3% ,16.7% ,Paper empty)
Troubleshooting of paper jam Can be corrected without separating the unit.
Reliability
MCBJ:Conforms to the main unit
MCBF:Conforms to the main unit
Life Conforms to the main unit
Power source Supplied from the main unit
Power consumption Normal operation:50.4W Lift up:40.8W
Dimensions(W×D×H) 670×570×525mm, 26 3/8 × 22 7/16 × 20 21/32 inch
Occupying area(W×D)
670×570mm, 26 3/8 × 22 7/16 inch
* The rear cabin motor restrictor (10mm) is not included.
Weight Approx. 50kg, 110.1 lbs
Installation/Maintenance Implemented by service man
Maintenance parts Paper feed roller
Optional detection Automatic detection
Bundled item Parts for installation
Table 1:Paper size, type, weight
A3W Yes Yes
A3 Yes Yes
B4 Yes Yes
A4 Yes Yes
A4R Yes Yes
B5 Yes Yes
B5R No No
A5R No No
12×18 Yes Yes
11×17 Yes Yes
Paper size
8.5×14 Yes Yes
8.5×13 Yes Yes
8.5×11 Yes Yes
8.5×11R Yes Yes
7.25×10.5R No No
5.5×8.5R No No
8K * No No
16K * No No
16KR No No
Postcard No No
Envelope No No
Special No No
55-59g/m
15-16- lbs bond
60-105g/m
16-28 lbs bond
106-209g/m
28+-56- lbs bond
210-256g/m
56-68 lbs bond
75-90g/m
20-24 lbs bond
Kind/weight
of
applicable
paper
Thin paper
Normal
paper
Cardboard
1(including
gloss paper)
Cardboard 2
Envelope
OHP paper No
Label paper No
Tab paper No
* : Available for products for China only.
Table2:Paper type setting
AB Series Inch
Normal paper Yes
Printed paper Yes
Recycled paper Yes
Letter head Yes
Perforated paper Yes
Color paper Yes
Paper type
Cardboard 1 Yes
Cardboard 2 No
Thin paper No
Label paper No
OHP No
Tab paper No
Envelope No
Use type 1 to 7 Yes
2
2
2
2
2
No
Yes
Yes
No
No
MX-LCX3 SPECIFICATIONS 2 – 1
MX-LCX3
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
Service Manual
1. Motor, clutch, solenoid
No.
Code Signal name Name Type Function/Operation Active condition
1 LPFM LPFM Transport motor Brushless motor Drives the paper feed, and the paper
2 LLM LLM Lift motor Brush motor Lifts or lowers the paper feed table. CN-B
3 LPFS LPFS Paper feed solenoid Presses the paper pickup roller onto paper. CN-E 8pin
4 LTLS LTLS Tray lock solenoid Controls ON/OFF of the tray lock. CN-D
5 LTRC LTRC Transport clutch Controls ON/OFF of the transport roller. CN-F 15pin
6 LPFC LPFC Paper feed clutch Controls ON/OFF of the paper feed roller. CN-F 11pin
7 LFAN LFAN Separation assist
fan
Brushless motor Assists feeding of paper. CN-D 15, 16pin
Parts
transport section.
CN-G
5pin → Motor rotation clock
4pin → Sync signal: Normal HIGH
3pin → Enable signal: LOW when rotating
Lifting: 10pin "24V", 15pin "L"
Lowering: 10pin "L", 15pin "24V"
ON: "L"
OFF: "24V"
Lock: "L" ("24V" after 0.5sec)
Release: "L" ("24V" after 0.5sec)
ON: "L"
OFF: "24V"
ON: "L"
OFF: "24V"
ON: "L"
OFF: "5V"
MX-LCX3 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 – 1
2. PWB, sensor, switch, heater
4
3
2
1
5
6
7
8
9
14
10
11
12
13
15
No.
1 LPUD LPUD LCC paper front surface
2 LUD LUD Upper limit sensor Detects the paper upper limit position. CN-E 5pin
3 LPFD LPFD Transport sensor Detects paper transport. CN-E 11pin
4 LTOD LTOD The main unit connection
5 LDSW LDSW Upper open/close switch Detects open/close of the upper door. CN-F 4pin 6pin
6 LLSW LLSW Upper limit switch Protects the paper feed unit from breakage
7 LPED LPED Paper presence/empty
8 A3-LCC PWB — A3-LCC PWB unit Controls and drives the LCC.
9 LCSW LCSW Cassette detection switch The tray insertion is detected. CN-B 7pin
10 LRE LRE Lift motor encoder The lift motor rotation is detected. CN-C 4pin
11 LWRSW LWRSW LCC reverse-winding
12 LTLD LTLD Tray lock sensor Detects the tray lock CN-C 7pin
13 LDD LDD Lower limit sensor The lower limit of the tray is detected. CN-C 3pin
14 DOWN SW PWB — Lowering SW PWB unit Shifts the tray to the paper supply position.
15 LTLLED LTLLED Tray LED The tray state is displayed with LED.
Code Signal name Name Type Function/Operation Active condition
sensor
sensor
sensor
detection switch
Parts
Detects paper front surface position CN-C 8pin
Detects connection to the main unit. CN-F 19pin
due to lifting the tray too much.
Detects paper presence/empty on the paper
tray.
Detects lift motor reverse-winding CN-B 14pin
Paper detected: "L"
Paper not detected: "H"
Upper limit: "H"
Other than Upper limit: "L"
Paper detected: "L"
Paper not detected: "H"
Connected: "L"
Not connected: "H"
Open: "L"
Close: "24V"
CN-F 7pin
Normal: "24V"
Detection: "L"
CN-E 2pin
Paper present: "L"
Paper empty: "H"
Cassette insertion: "24V"
Cassette puling out: "L"
Pulse
Normal: "24V"
Detection: "L"
Lock: "H"
Release: "L"
Lower limit: "H"
Other than Lower limit: "L"
MX-LCX3 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 – 2
(
)
(
)
MX-LCX3
[5] OPERATIONAL DESCRIPTION
Service Manual
1. Lift operation
A. Lifting by insertion of the tray
When insertion of the tray is detected, the tray is locked by the tray
lock solenoid so that the tray cannot be pulled out.
When tray lock is settled by turning ON the tray lock sensor (LTLD),
the lift motor is turned ON to lift the tray.
When the tray is lifted, the tray LED blinks and stops at the paper
feed position (upper limit) by turning ON the upper limit sensor
(LUD).
When the tray stops at the paper feed position (upper limit), the tray
LED turns on.
When the paper empty sensor (LPED) turns ON within 1097 pulses
of the encoder signal from start of the tray lifting, the lift motor is
turned OFF to stop the tray, and the paper feed solenoid (LPFS) is
turned ON to lower the pick roller.
After that, the lift motor is turned ON again to lift the tray and stop it
at the upper limit sensor (LUD) ON position.
When the paper empty sensor (LPED) does not turn ON within
1097 pulses, the paper feed solenoid (LPFS) is turned ON with the
lift motor ON to lower the pick roller. The lift motor is stopped at the
upper limit sensor (LUD) ON position and the paper feed solenoid
is turned OFF.
Lifting (When LPED turns ON within 1097 pulses during lifting)
(Lift motor output)
(Lower limit sensor)
(Upper limit sensor)
(Paper empty detection)
Encoder signal
LLM
LDD
LUD
LPED
LPSL
(Solenoid)
LRE
Within 1097 pulses
Lifting (When LPED does not turn ON within 1097 pulses during lifting)
(Lift motor output)
(Lower limit sensor)
(Upper limit sensor)
(Paper empty detection)
(Encoder signal)
LLM
LDD
LUD
LPED
LPSL
(Solenoid)
LRE
1097
200msec
B. Lowering operation by paper empty detection
or pressing the tray SW
When the paper empty sensor (LPED) turns OFF with the tray at
the paper feed position (upper limit) or when the tray SW (LTLSW)
is pressed, the tray is lowered by 542 pulses of the encoder signal
and stopped at the paper supply position.
When the lower limit sensor (LDD) turns ON before lowering the
tray by 542 pulses of the encoder signal, the lift motor is turned
OFF to stop the tray.
When the tray is moving down, the tray LED blinks. When the tray
is stopped at the paper supply position, the tray LED turns OFF.
When the tray is stopped at the paper supply position, the tray lock
solenoid releases the lock so that the tray can be pulled out.
When the tray is lowered with the paper empty sensor (LPED) OFF,
the tray remains at the paper supply position and the tray lock is
kept released.
When the tray is lowered by pressing the tray SW (LTLSW), if the
tray is not pulled out from the paper supply position for 90sec, the
tray lock solenoid locks the tray. When the tray is locked securely,
the lift motor is turned ON to lift the tray.
When the tray is lifting, the tray LED blinks. When the upper limit
sensor (LUD) is turned ON, the tray stops at the paper feed position
(upper limit).
When the tray stop at the paper feed position (upper limit), the tray
LED turns ON.
Lowering operation (when paper empty is detected)
(Lift motor output)
(Lower limit sensor)
(Upper limit sensor)
(Paper empty detection)
Encoder signal
Lowering operation (when tray SW is pressed)
(Lift motor output)
(Lower limit sensor)
(Upper limit sensor)
(Paper empty detection)
(Encoder signal)
LLM
LDD
LUD
LPED
LTLSW
(Tray SW)
LRE
LLM
LDD
LUD
LPED
LTLSW
(Tray SW)
LRE
542
Less than 542
MX-LCX3 OPERATIONAL DESCRIPTION 5 – 1
C. Lowering operation by paper supply
If the tray is pulled out when it is at the paper supply position, the
tray lock solenoid keep the lock released.
When the tray is pulled out, the tray LED turns OFF.
When the paper front surface sensor (LPUD) is turned ON for 2sec
while the tray is pulled out, the lift motor is turned ON to lower the
tray.
When the paper front surface sensor (LPUD) is turned OFF while
the tray is lowered, the lift motor is turned OFF to stop the tray.
When the lower limit sensor (LDD) is turned ON while the tray is
lowered, the lift motor is turned OFF to stop the tray regardless of
the state of the paper front surface sensor (LPUD).
2. Paper feed operation
When the tray is stationary at the paper feed position (upper limit
sensor: LUD ON position) and there is paper on the tray, paper
feed operation can be performed.
Paper feed operation is performed by the transport motor (LPFM),
the transport clutch (LTRC), the paper feed clutch (LPFC), and the
paper feed solenoid (LPFS) at the following timing.
Lowering operation (when paper is supplied or when the paper
front surface sensor is turned ON)
LLM
(Lift motor output)
LDD
(Lower limit sensor)
LPUD
(Paper front surface
sensor)
2 [sec]
LRE
(Encoder signal)
Lowering operation (when paper is supplied or when the lower
limit sensor is turned ON)
(Lift motor output)
(Lower limit sensor)
(Paper front surface
(Encoder signal)
LLM
LDD
LPUD
sensor)
LRE
2 [sec]
When the transport clutch (LTRC) is turned ON with the transport
motor (LPFM) ON (rotating), the transport roller rotates. When the
paper feed clutch (LPFC) is turned on under this state, the paper
feed roller and the take-up roller rotate. When the paper feed solenoid (LPFS) is turned ON, the take-up roller is pushed down to
press paper.
Paper feed time chart
Paper feed start
(Transport motor)
(Transport sensor)
(Paper feed solenoid)
(Paper feed clutch)
(Transport clutch)
synchronous signal)
LPFM
LTD
LPFS
LPFC
LTRC
TRC-LCC
(Main unit
paper feed start
Preliminary
First sheet
Clearance-betweenpapers control timer
PIC drop timer PIC drop timer
Paper feed clutch
OFF timer
Preliminary
paper feed start
Preliminary paper
feed complete
Paper feed start
Second sheet
Clearance-betweenpapers control timer
Paper feed clutch
Resist stop
Preliminary paper
feed complete
Paper feed start
OFF timer
paper feed start
Preliminary
Third sheet
Clearance-betweenpapers control timer
PIC drop timer PIC drop timer
Paper feed clutch
OFF timer
Resist stop Resist stop
Preliminary
paper feed start
Preliminary paper
feed complete
Paper feed start
Fourth sheet
Clearance-betweenpapers control timer
Paper feed clutch
Preliminary paper
feed complete
Paper feed start
OFF timer
Preliminary
paper feed start
Fifth sheet
Paper feed clutch
OFF timer
Resist stop
Preliminary paper
feed complete
Paper feed start
MX-LCX3 OPERATIONAL DESCRIPTION 5 – 2
1
5
6
7
32
1 Paper feed roller clutch
2 Take-up roller
3 Paper feed roller
4 Paper feed solenoid
5 Transport clutch
6 Transport motor
7 Lift-up motor
4
3. Paper empty detection
When the tray lifts and stops at the paper feed position and during
paper feed operation, paper presence/empty is detected by the
paper presence/empty sensor (LPED).
When paper empty is detected in the tray during paper feeding,
paper feeding is stopped.
MX-LCX3 OPERATIONAL DESCRIPTION 5 – 3
MX-LCX3
[6] DISASSEMBLY AND ASSEMBLY
Service Manual
1. Maintenance parts replacement procedures
A. Paper feed roller
1) Pull the lever, and open the upper cover.
2) Remove the screw, and remove the sheet.
3) Remove the pawl, and remove the pickup roller and the paper
feed roller.
2. Each unit removal
A. Paper feed unit
1) Pull out the tray.
2) Remove the screw, and remove the left front cabinet.
4) Loosen the screw, and remove the paper guide block.
5) Remove the pawl, and remove the reverse roller.
3) Open the upper cover, and remove the screws.
4) Remove the upper cabinet.
MX-LCX3 DISASSEMBLY AND ASSEMBLY 6 – 1
5) Disconnect the connectors.
6) Remove the screws, and remove the paper feed unit.
C. Lift drive unit
1) Check that there is no paper, and lower the paper feed table to
the lower limit with the main unit simulation mode.
2) Remove the screws, and remove the rear cabinet.
B. Paper feed tray
1) Pull out the tray.
2) Remove the upper cabinet. (Refer to "A. Paper feed unit")
3) Remove the left front cabinet. (Refer to "A. Paper feed unit")
4) Remove the harness.
5) Remove the screws from the left and right rail sections, and
remove the tray unit from the rail.
3) Remove the connectors.
4) Remove the screws, and remove the lift drive unit.
MX-LCX3 DISASSEMBLY AND ASSEMBLY 6 – 2
Loading...