Read Sharp MX-LC15 Service Manual online
SERVICE MANUAL
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.
SHARP CORPORATION
[1] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
[2] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. Sensor, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2. Motor, clutch, solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
3. PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
4. Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
[3] MAINTENANCE
1. Maintenance list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
2. Each unit disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3. Disassembly and assembly in each unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
[4] OPERATIONAL DESCRIPTIONS
1. Electrical and mechanical main parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
2. Lift operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
3. Paper feed operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4. Paper empty detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
[5] ELECTRICAL SECTION
1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
2. Actual wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
CODE: 00ZMXLC15/S1E
CONTENTS
DIGITAL MULTIFUNCTIONAL
SYSTEM OPTION
LARGE CAPACITY TRAY
SYSTEM OPTION
LARGE CAPACITY TRAY
MX-LC15
MODEL
MX-LC15 SPECIFICATIONS 1 – 1
MX-LC15
Service Manual
[1] SPECIFICATIONS
Type
Externally mounted 3500-sheet paper feeder
Transport reference
Center reference
Paper size
A4, 8.5" x 11"
Paper size setting
Service engineer support/simulation setup
Factory default paper size setting
AB series: A4
Inch series: 8.5" x 11"
Inch series: 8.5" x 11"
Paper type setting
Provided
Supported paper types/weight
Plain paper, printed paper, recycled paper, letter head, pre-punched paper, color paper, Heavy paper(106-220g/m
2
(28 lbs
bond to 80lbs cover) ・60-220g/m
2
(21 lbs bond to 80 lbs cover)
Paper capacity
3500 sheets (80 g/m
2
(21 lbs)), at effective height of 385 mm
Paper level detection
The paper feeder detects the amount of remaining paper and indicates one of seven levels (100%, 83.3%, 66.7%, 50.0%,
33.3%, 16.7%, and none) on its own panel or on the printer's display.
33.3%, 16.7%, and none) on its own panel or on the printer's display.
Paper refill method
Front loading type; paper can be refilled from the upper part.
Drive mechanism
Transport motor (brushless DC motor) controlled by a controller board built in the LCC
Jam processing
Can be done by moving the unit to the right or drawing out the tray.
Off-center adjustment
3 mm (can be adjusted by moving the front and rear regulation plates).
Vertical tray movement time
Up: within 15 seconds (with no paper loaded; from tray insertion to "empty" detection).
Down: within 5 seconds
Down: within 5 seconds
Power consumption
(except for the heater)
(except for the heater)
Max. 25.3W
Lift-up: Max. 40.8W
Lift-up: Max. 40.8W
Power supply
5V
5% and 24V 5% (Supplied from the main unit)
Outside dimensions (W x D x H)
371 x 575 x 520 (mm), 14.6 x 22.6 x 20.5 (inch)
Weight
Approx. 29.2 kg (64.4 lbs)
Paper feed system
Paper pick-up with the aid of a take-up roller; torque limiter reverse rotation separation system
Heater
Service parts (kit)
Installation/maintenance
Installed by service personnel
Optional detection
Auto detection supported
Packaged items
Parts for mounting
MX-LC15 EXTERNAL VIEW AND INTERNAL STRUCTURE 2 – 1
MX-LC15
Service Manual
[2] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. Sensor, switch
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.
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.
LPFD
Paper pass detector
Transmission type
Detects paper transport.
LRE
Lift motor rotaly encoder sensor
Transmission type
The lift motor rotation is detected.
LUD
Tray upper limit sensor
Transmission type
Detects the paper upper limit position.
LPFD
LLSW
LDSW
LUD
LPED
LCCD (LTOD)
LCLD (LCD)
LRE
LDD
MX-LC15 EXTERNAL VIEW AND INTERNAL STRUCTURE 2 – 2
2. Motor, clutch, solenoid
Signal
name
Name
Type
Function/operation
LLM
Lift motor
Brush motor
Lifts the paper feed table.
LPFC
Paper feed clutch
Electromagnetic clutch
Controls ON/OFF of the paper feed roller.
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.
LTRC
Transport clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller.
LTRC
LPFC
LPFS
LPFM
LLM
