SHARP MX-LCX4 Service Manual
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SERVICE MANUAL
CODE: 00ZMXLCX4/S1E
DIGITAL MULTIFUNCTIONAL SYSTEM
OPTION
LARGE CAPACITY THREE TRAYS
CONTENTS
[1] SPECIFICATIONS . . . . . . . . . . . . . 1-1
[2] MAINTENANCE
1. Maintenance table . . . . . . . . . . 2-1
[3] REPLACEMENT AND ADJUSTMENT
1. Front door and covers . . . . . . . 3-1
2. Inner cover, paper feed unit . . . 3-1
3. Paper feed roller . . . . . . . . . . . . 3-1
4. LCT motors. . . . . . . . . . . . . . . . 3-2
5. Image position sensor board,
exit sensor . . . . . . . . . . . . . . . . 3-4
6. Paper height sensors,
paper size sensors . . . . . . . . . . 3-4
7. Main control board . . . . . . . . . . 3-4
8. Side registration adjustment . . . 3-5
9. Dehumidifier heater
installing procedures
(0PQC4150431//) . . . . . . . . . . . 3-5
MODEL
[4] DETAILED DESCRIPTIONS
1. Paper feed . . . . . . . . . . . . . . . . 4-1
2. Paper lift . . . . . . . . . . . . . . . . . . 4-2
3. Paper size detection. . . . . . . . . 4-2
4. Remaining paper detectiion . . . 4-3
5. Paper end detection . . . . . . . . . 4-3
[5] OVERALL MECHANICAL
INFORMATION
1. Mechanical component
layout . . . . . . . . . . . . . . . . . . . . 5-1
2. Drive layout . . . . . . . . . . . . . . . 5-1
3. Electrical components . . . . . . . 5-2
4. A4/LT LCT MX-LCX4 layout
(with bypass) . . . . . . . . . . . . . . 5-3
5. Electrical component
summary . . . . . . . . . . . . . . . . . 5-3
MX-LCX4
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.
MX-LCX4
[1] SPECIFICATIONS
Form Large Capacity Trays (3 Trays)
Transport speed 85 – 110 sheets/minute to be supported
Transport standard Center alignment
Paper size A4, A5R, B5, 8.5 x 11, 5.5 x 8.5R, 9 x 12 (A4W)
Paper size label Available
Paper size setting Upper tray: User setting (Size setting by guide at Interior side of tray)
Paper size setting for shipment Inch: 8.5 x 11
Feedable paper size/weight Upper tray: 52 – 205 g/m
Paper type Plain paper, Heavy paper, Recycled paper, Thin paper, Pre-printed paper, letter head, Punched paper, Transparency paper,
Paper capacity Standard Paper
Detection of remaining paper Available level detection (5 levels)
Paper supply Paper supply from the upper section by the front loading method
Tray rising/falling time Rising Upper tray / Middle tray: 10 seconds or less
Reliability MCBJ in compliance with the main unit
Life 5 years or 24,000K
Power consumption 150W or less
Power source DC24V (Supplied by the main unit)
Dimensions W526 x D728 x H980 mm
Occupied dimension 540 x 730 mm
Weight Approximately 95 kg
Installation/Maintenance By service person
Heater AC 18W x 2 36W (Service parts: 0PQC4150431//)
Middle tray: User setting (Size setting by guide at Interior side of tray)
Lower tray: Service setting (Size setting by operation panel)
AB: A4
Middle tray: 52 – 205 g/m
Lower tray: 52 – 163 g/m
Colored paper, Tab paper (Not available for the Saddle tray), Label paper (Available only for the Offset tray)
Upper tray / Middle tray: 1000 sheets
Lower tray: 2550 sheets
2
(80 g/m
)
Upper tray / Middle tray: 100%, 75%, 50%, 25%, Empty
Lower tray: 100%, 75%, 50%, 25%, Empty
* Detection error 3%
Falling Self-weight falling
MCBF
2
/ 16 lbs Bond – 110 lbs Index
2
/ 16 lbs Bond – 110 lbs Index
2
/ 16 lbs Bond – 90 lbs Index
Lower tray : 15 seconds or less
Time required from tray insertion to empty detection without paper
Service Manual
MX-LCX4 SPECIFICATIONS 1 – 1
Paper Size/Type/Weight
LCT(A4)
Uppe r Tr ay Mi dd le Tr ay Lo wer Tra y
Minimum paper weight 52 g/m
2
(14 lbs bond)
Maximum paper weight 205 g/m
2
(40 lbs bond)
(110 lbs index)
(65 lbs cover)
Paper type Thin paper Yes
(Even 52 g/m
2
(110 lbs index)
(65 lbs cover)
(Even 52 g/m
is possible)
Plain paper Yes Yes Yes
Recycled paper Yes Yes Yes
Colored paper Yes Yes Yes
Letter head Yes Yes Yes
Pre-printed paper Yes Yes Yes
Pre-punched paper Yes Yes Yes
Heavy paper 1 (106 – 128 g/m
Heavy paper 2 (129 – 176 g/m
Heavy paper 3 (177 – 205 g/m
Heavy paper 4 (206 – 300 g/m
2
) Yes Yes Yes
2
) Yes Yes Yes
2
)Yes Yes No
2
)NoNoNo
Tab paper Yes Yes No
Transparency paper Yes Yes Yes
Label paper No Yes No
Paper size 12" x 18" (A3W) 305 x 457 — — —
Ledger (11" x 17") 279 x 432 — — —
Ledger (11" x 17") Z folding 279 x 216 — — —
Legal (8.5" x 14") 216 x 356 — — —
Legal (8.5" x 14") Z folding 216 x 178 — — —
Mexican Legal (8.5" x 13.4") 216 x 340 — — —
Foolscap (8.5" x 13") 216 x 330 — — —
Letter (8.5" x 11") 279 x 216 Yes Yes Yes
Letter R (8.5" x 11" R) 216 x 279 — — —
Letter R (8.5" x 11" R) Z folding 216 x 140 — — —
Invoice (5.5" x 8.5") 216 x 140 — — —
Invoice R (5.5" x 8.5" R) 140 x 216 Yes Yes Yes
Exective R (7.25" x 10.5") 184 x 266 — — —
9 x 12 (A4W) 305 x 229 Yes Yes Yes
A3 297 x 420 — — —
A3 Z folding 297 x 210 — — —
B4 257 x 364 — — —
B4 Z folding 257 x 182 — — —
A4 297 x 210 Yes Yes Yes
A4-R 210 x 297 — — —
A4-R Z folding 210 x 148 — — —
B5 257 x 182 Yes Yes Yes
B5-R 182 x 257 — — —
A5 210 x 148 — — —
A5-R 148 x 210 Yes Yes Yes
SRA3 320 x 450 mm — — —
SRA4 320 x 225 mm — — —
318 x 234.75 mm — — —
312.5 x 220 mm — — —
318 x 469.5 mm — — —
312.5 x 440 mm — — —
8K 270 x 390 — — —
16K 270 x 195 — — —
16K-R 195 x 270 — — —
Postcard 100 x 148 — — —
Special – Custom size
Custom Range
min Main — — —
No No No
max Main — — —
min Sub — — —
max Sub — — —
Special – Size uncertain — — —
2
52 g/m
(14 lbs bond)
2
205 g/m
(40 lbs bond)
Ye s
is possible)
(14 lbs bond)
163 g/m
(90 lbs Index)
2
(Even 52 g/m
is possible)
52 g/m
Yes
2
2
2
MX-LCX4 SPECIFICATIONS 1 – 2
MX-LCX4
[2] MAINTENANCE
Service Manual
1. Maintenance table
: Check (Clean, replace or adjust as needed) {: Clean : Replace : Adjust ✩: Lubricate : Shift position
No. Parts name
1 Transport
guide plate
2 Grip roller
drive/follower
3 Pick-up roller
(1 – 3 step)
4 Feed roller
(1 - 3 step)
5 Separate roller
(1 – 3 step)
6 Torque limiter
7 Sensor {{{{{{
8Gear UKOG-0307FCZZ
Occasionally
When calling
500K 1000K 1500K 2000K 2500K 3000K
{{{{{{ When there is dirt, wipe with dry
{{{{{{ When there is dirt, wipe with cloth
Life judgement
(Reference)
[Note 1] Roller life 200K When there is dirt, wipe with cloth
[Note 1] Roller life 200K When there is dirt, wipe with cloth
[Note 1] Roller life 200K When there is dirt, wipe with cloth
Tool, oil, chemicals Procedure
Treatment after procedure
cloth.
and water.
and water.
and water.
and water.
[Note 1] Replacement reference: Replace according to each paper feed counter value.
MX-LCX4 Paper feed tray 1, 2, 3: 200K or 1 year Torque limiter: 800K
(NOTE) Paper feed section roller life
Each roller life is as shown on the left. When, therefore, a certain paper feed unit is excessively used, its life may be expired before the maintenance timing.
Actually, however, different sizes of paper are used with different paper feed trays, and it is quite rare that the roller replacement must be made
before the maintenance timing.
If a certain size of paper must be heavily used, set different paper feed trays for that paper size. This information must be explained to the user.
When servicing, check the use frequency of each paper feed tray, and replace the rollers as needed.
When cleaning the roller, it is advisable to use a cloth with a small quantity of water.
The friction level is smaller in the order of the paper pick-up roller, the paper feed roller, and the separation roller.
MX-LCX4 MAINTENANCE 2 – 1
MX-LCX4
[3] REPLACEMENT AND
ADJUSTMENT
1. Front door and covers
Service Manual
[E]
[B]
[A] Top cover (screw x 4).
[B] Front door (stopper x 1).
NOTE: While lifting the top cover, remove the snap ring and front
door.
[C] Rear cover (screw x 6).
[D] Right cover (screw x 6).
[E] Paper slot cover (screw x 2).
[A]
[C]
[D]
2. Inner cover, paper feed unit
[F]
• Open the front door.
• Remove right cover (see 1.)
Remove:
[A] Pull out tray and remove it (screw x 4)
[B] Knobs (x 3) (screw x 1 each)
[C] Upper inner cover (screw x 2)
[D] Knob (screw x 1)
[E] Lower inner cover (screw x 1)
[F] Paper feed unit (connector x 1, screw x 2)
3. Paper feed roller
[B]
[A]
[C]
[E]
[A]
Remove:
• Remove the right cover (see 1.)
• Remove the paper trays. (see 2.)
[A] Pick-up roller (stopper x 1).
[B] Feed roller (stopper x 1).
[C] Separation roller (stopper x 1).
[C]
[B]
[D]
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 1
NOTE: 1) The LCT pick-up and separation rollers are the same
as pick-up and separation rollers of the main machine.
These rollers are interchangeable.
2) The feed rollers of the LCT and main machine are different because they are designed to rotate in opposite
directions. The feed rollers of the LCT and main
machine are not interchangeable.
3) Never touch the surface of the rollers with bare hands.
• Clear the PM counters for the new rollers (see Section "2. Preventive Maintenance).
4. LCT motors
C. 4th transport motor
A. Paper feed, grip motors
[A]
(1)
(2)
[C]
(3)
[B]
[C]
[A]
[B]
(1)
[D]
Each paper feed unit has a paper feed motor (1) and a grip motor
(2). The removal procedure is the same for each feed tray.
Remove:
• Rear cover (see 1.)
[A] Motor unit (screw x 4, connector x 2)
[B] Springs (x 2). First, loosen the screws (x 2) (3).
[C] Paper feed motor (screw x 2)
[D] Grip motor (screw x 2)
Reinstallation
• Attach the tension spring, then tighten the screws (3) to tighten
the belts.
B. 6th lift motor
Remove:
• Rear cover. (see 1.)
[A] 4th Transport motor unit (screw x 5, connector x 1).
[B] Spring (x 1). First, loosen screw (1) (screw x 1).
[C] 4th transport motor (screw x 2, Timing belt x 1)
Reinstallation
• Be sure that the tension spring is connected, then tighten the
screw (1).
[A]
Remove:
• Rear cover (see 1.)
[A] 6th lift motor (screw x 2, connector x 1)
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 2
D. 5th transport motor
[A]
[C]
(1)
[B]
[B]
[C]
Remove:
• Rear cover. (see 1.)
[A] Motor unit (screw x 4, connector x 1).
[B] Spring (x 1). First, loosen screw (1) (screw x 1).
[C] 5th Transport motor (screw x 2, Timing belt x 1)
Reinstallation
• Be sure that the tension spring is connected, then tighten the
screw (1).
(1)
E. LCT exit motor
Remove:
• Remove the rear cover. (see 1.)
[A] Motor unit (screw x 6, connector x 1).
[B] Spring (x 1). First, loosen screw (1) (screw x 1).
[C] LCT exit motor (screw x 2, Timing belt x 1)
Reinstallation
• Be sure that the tension spring is connected, then tighten the
screw (1).
F. 6th transport motor
[A]
[B]
[C]
[A]
(1)
Remove:
• Rear cover. (see 1.)
[A] Motor unit (screw x 6, connector x 1).
[B] Spring (x1). First, loosen screw (1) (screw x 1).
[C] LCT exit motor (screw x 2, Timing belt x 1)
Reinstallation
• Be sure that the tension spring is connected, then tighten the
screw (1).
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 3
G. 4th, 5th lift motors
[A]
B. Image position sensor board
[E] Image position sensor board (screw x 2, clamp x 1, connector x
2)
C. Exit sensor
[F] Exit sensor unit (screw x 1, connector x 1, clamp x 1)
[G] Exit sensor
6. Paper height sensors, paper size
sensors
[B]
[C]
Remove:
• Rear cover. (see 1.)
[A] Main control board bracket (screw x 5, connector x All)
[B] 4th lift motor (screw x 3, connector x 1)
[C] 5th lift motor (screw x 3, connector x 1)
5. Image position sensor board, exit sensor
[E]
[A]
[C]
[A]
[C]
[A]
[B]
[B]
4th/5th Tray
6th Tray
Remove:
• Rear cover. (see 1.)
• Right cover. (see 1.)
[A] Paper height sensor unit (clamp x 2, screw x 1, connector x 4).
[B] Paper height sensors (Hooks x 4 each)
[C] Paper size sensors (connector x 1 each)
7. Main control board
[A]
[B]
[D]
[G]
[F]
A. Image position sensor
Disconnect the LCT from the copier.
[A] Harness cover (screw x 1, clamp x 1)
[B] Image position sensor unit (screw x 1, clamp x 1, connector x 1)
[C] Stopper (screw x 1)
[D] Image position sensor
• After replacing the image position sensor, do the procedure for
image position sensor adjustment. (see 9.)
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 4
Remove:
• Rear cover. (see 1.)
[A] Main control board (screw x 6, Standoffs x 2, connector x All)
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