Sharp MX-LCX5 User manual

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 This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
[1] SPECIFICATIONS . . . . . . . . . . . . . 1-1
[2] MAINTENANCE
1. Maintenance table . . . . . . . . . . 2-1
[3] REPLACEMENT AND ADJUSTMENT
1. Removing trays. . . . . . . . . . . . . 3-1
2. Front door and covers . . . . . . . 3-1
3. Inner cover, paper feed unit . . . 3-2
4. Paper feed roller . . . . . . . . . . . . 3-2
5. LCT motors. . . . . . . . . . . . . . . . 3-2
6. LCT exit sensor . . . . . . . . . . . . 3-4
7. Paper path sensors . . . . . . . . . 3-4
8. Main control board . . . . . . . . . . 3-5
9. Paper height,
paper width sensors . . . . . . . . . 3-5
10. Side registration adjustment . . . 3-5
11. Image position board and
sensor. . . . . . . . . . . . . . . . . . . . 3-6
12. Dehumidifier heater
installing procedures
(0PQC4180431//) . . . . . . . . . . . 3-6
[4] DETAILED DESCRIPTIONS
1. Paper feed . . . . . . . . . . . . . . . . 4-1
2. Paper detection/lift . . . . . . . . . . 4-2
3. Paper size detection. . . . . . . . . 4-2
4. Remaining paper detection . . . 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. A3/DLT LCT MX-LCX5 layout
(with bypass) . . . . . . . . . . . . . . 5-3
5. Electrical component
summary . . . . . . . . . . . . . . . . . 5-3
TopPage
CONTENTS
CODE: 00ZMXLCX5/S1E
DIGITAL MULTIFUNCTIONAL SYSTEM
OPTION
LARGE CAPACITY THREE TRAYS
MX-LCX5
MODEL

MX-LCX5 SPECIFICATIONS 1 – 1
MX-LCX5 Service Manual
[1] SPECIFICATIONS
Form Large Capacity Trays (3 Trays)
Transport speed 85 – 110 sheets/minute to be supported
Transport standard Center alignment
Paper size Auto-AB: A3W, A4W, A3, B4, A4, A4R*, B5, B5R, A5R, 8.5 x 13*
Auto-Inch: 12 x 18, 11 x 17, 9 x 12, 8.5 x 14*, 8.5 x 13.4*, 8.5 x 11, 8.5 x 11R*, 7.25 x 10.5R, 5.5 x 8.5R
Manual: 318 x 469.5 mm, 318 x 234.75 mm, 312.5 x 440 mm, 312.5 x 220 mm
SRA3 (320 x 450 mm), SRA4 (320 x 225 mm) 8K, 16K, 16KR, Postcard
Custom Size: Main scanning: 100 – 320 mm (4.0 – 12.5)
Sub scanning: 140 – 470 mm (5.5 – 18.5)
*: As automatic detection, 8.5 x 11R/8.5 x 14/8.5 x 13.4 and A4R/8.5 x 13/8.5 x 13.4 is exclusion. Refer to the attached table.
Paper size label Available
Paper size setting Upper tray: User settings
Middle tray: User settings
Lower tray: User settings
Paper size setting for shipment Inch: 11 x 17
AB: A3
Feedable paper size/weight Upper tray: 52 – 205 g/m2/ 16 lbs Bond – 110 lbs Index
Middle tray: 52 – 300 g/m2/ 16 lbs Bond – 170 lbs Index
Lower tray: 52 – 205 g/m2/ 16 lbs Bond – 110 lbs Index
Paper type Plain paper, Heavy paper, Recycled paper, Thin paper, Pre-printed paper, Letter head, Punched paper, Transparency paper,
Colored paper, Tab paper, Label paper (Available only for the Offset tray)
Paper capacity Standard Paper
Upper tray / Lower tray: 1,000 sheets
Middle tray: 2,000 sheets
(80 g/m2)
Detection of remaining paper Available level detection (5 levels)
Upper tray / Lower tray: 100%, 75%, 50%, 25%, Empty
Middle tray: 100%, 75%, 50%, 25%, Empty
* Detection error 3%
Paper supply Paper supply from the upper section by the front loading method
Tray rising/falling time Rising Upper tray / Lower tray: 9 seconds or less
Middle tray: 24 seconds or less
Time required from tray insertion to empty detection without paper
Falling Self-weight falling
Reliability MCBJ in compliance with the main unit
MCBF
Life 5 years or 24,000K
Power consumption 150W or less
Power source DC24V Supplied by the main unit
Dimensions W 878 x D 729 x H 980 mm
Occupied dimension W 880 x D 730
Weight Approximately 175 kg
Installation/Maintenance By service person
Heater AC 18W x 2 36W (By service parts: 0PQC4180431//)

MX-LCX5 SPECIFICATIONS 1 – 2
Paper Size/Type/Weight
LCT(A3)
Upper Tray Middle Tray Lower Tray
Minimum paper weight 52 g/m2
(14 lbs bond)
52 g/m2
(14 lbs bond)
52 g/m2
(14 lbs bond)
Maximum paper weight 205 g/m2
(40 lbs bond)
(110 lbs index)
(65 lbs cover)
300 g/m2
(40 lbs bond)
(170 lbs index)
(100 lbs cover)
205 g/m2
(40 lbs bond)
(110 lbs index)
(65 lbs cover)
Paper type Thin paper Yes
(Even 52 g/m2
is possible)
Yes
(Even 52 g/m2
is possible)
Yes
(Even 52 g/m2
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/m2) Yes Yes Yes
Heavy paper 2 (129 – 176 g/m2) Yes Yes Yes
Heavy paper 3 (177 – 205 g/m2) Yes Yes Yes
Heavy paper 4 (206 – 300 g/m2)No Yes No
Tab paper Yes Yes Yes
Transparency paper Yes Yes Yes
Label paper No Yes No
Paper size 12" x 18" (A3W) 305 x 457 Yes Yes Yes
Ledger (11" x 17") 279 x 432 Yes Yes Yes
Ledger (11" x 17") Z folding 279 x 216 — — —
Legal (8.5" x 14") 216 x 356 Yes Yes Yes
Legal (8.5" x 14") Z folding 216 x 178 — — —
Mexican Legal (8.5" x 13.4") 216 x 340 Yes Yes Yes
Foolscap (8.5" x 13") 216 x 330 Yes Yes Yes
Letter (8.5" x 11") 279 x 216 Yes Yes Yes
Letter R (8.5" x 11" R) 216 x 279 Yes Yes Yes
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 Yes Yes Yes
9 x 12 (A4W) 305 x 229 Yes Yes Yes
A3 297 x 420 Yes Yes Yes
A3 Z folding 297 x 210 — — —
B4 257 x 364 Yes Yes Yes
B4 Z folding 257 x 182 — — —
A4 297 x 210 Yes Yes Yes
A4-R 210 x 297 Yes Yes Yes
A4-R Z folding 210 x 148 — — —
B5 257 x 182 Yes Yes Yes
B5-R 182 x 257 Yes Yes Yes
A5 210 x 148 — — —
A5-R 148 x 210 Yes Yes Yes
SRA3 320 x 450 mm Yes Yes Yes
SRA4 320 x 225 mm Yes Yes Yes
318 x 234.75 mm Yes Yes Yes
312.5 x 220 mm Yes Yes Yes
318 x 469.5 mm Yes Yes Yes
312.5 x 440 mm Yes Yes Yes
8K 270 x 390 Yes Yes Yes
16K 270 x 195 Yes Yes Yes
16K-R 195 x 270 Yes Yes Yes
Postcard 100 x 148 Yes Yes Yes
Special – Custom size
Custom Range
Yes Yes Yes
min Main 100 (4.0) 100 (4.0) 100 (4.0)
max Main 320 (12.5) 320 (12.5) 320 (12.5)
min Sub 140 (5.5) 140 (5.5) 140 (5.5)
max Sub 470 (18.5) 470 (18.5) 470 (18.5)
Special – Size uncertain No No No

MX-LCX5 MAINTENANCE 2 – 1
MX-LCX5 Service Manual
[2] MAINTENANCE
1. Maintenance table
: Check (Clean, replace or adjust as needed) {: Clean : Replace : Adjust ✩: Lubricate : Shift position
[Note 1] Replacement reference: Replace according to each paper feed counter value.
MX-LCX5 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 mainte-
nance 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.
No. Parts name Occasionally
When calling 500K 1000K 1500K 2000K 2500K 3000K Life judgement
(Reference)
Tool, oil, chemicals Procedure
Treatment after procedure
1 Transport guide
plate
{{{{{{ When there is dirt, wipe with dry
cloth.
2 Grip roller drive/
follower
{{{{{{ When there is dirt, wipe with cloth
and water.
3 Pick-up roller
(1 – 3 step)
[Note 1] Roller life 200K When there is dirt, wipe with cloth
and water.
4 Feed roller
(1 - 3 step)
[Note 1] Roller life 200K When there is dirt, wipe with cloth
and water.
5 Separate roller
(1 – 3 step)
[Note 1] Roller life 200K When there is dirt, wipe with cloth
and water.
6 Sensor {{{{{{
7 Torque limiter
8Gear UKOG-0307FCZZ

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 1
MX-LCX5 Service Manual
[3] REPLACEMENT AND
ADJUSTMENT
1. Removing trays
CAUTION:
• Tray 5 weighs 27 kg (60 lb.) empty. Trays 4 and 6 weigh 20 kg
(44 lb.) each empty.
• To prevent damage to the tray and personal injury, never attempt
to lift a tray alone or without attaching the carrying handles, espe-
cially if a tray is loaded with paper.
• Two people on each side of the tray should lift the carrying han-
dles together to lift and move the tray.
• Never remove the tray if the LCT has not been docked to the
copier. Removing the tray while the LCT is standing alone can
unbalance the LCT and cause it to fall over.
Important:
Only one set of carrying handles is attached to the side of Tray 5.
Follow the procedure below to attach and use these handles to
move Tray 4, 5, or 6.
1) Pull the tray [A] out of the LCT until it stops.
2) Remove the screws from the right rail [B] (screw x 3)
3) Remove the screws from the left rail [D] (screw x 3)
NOTE: You do not need to remove the screw for the stopper
pin bracket at the back of the left rail.
4) Remove carrying handles [A] and [B] from the right side of the
tray (screw x 2 ea.)
5) Use the same screws to attach the carrying handles at (1) and
(2).
6) With one person on each side of the tray, lift it carefully and
remove it from the rails.
2. Front door and covers
Important:
• The frame is held together by 8 blue screws.
• To avoid weakening or warping the shape of the frame, never
remove these blue screws.
NOTE: The upper inner cover must be removed before the top
cover.
Remove:
[A] Right cover (screw x 6)
[B] Right rear cover (screw x 6)
[C] Left rear cover (screw x 6)
[D] Top cover (screw x 5)
[E] Front door (stopper x 1)
NOTE: While lifting the top cover, remove the snap ring and front
door.
[F] Paper slot cover (screw x 2)
[A]
[B]
(1)
(2)
[C]
[E]
[B]
[F][D]
[A]

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 2
3. Inner cover, paper feed unit
• Open the front door.
• Remove right cover (see 2.)
• Pull out tray [A]
Remove:
[A] Tray (see 1.)
[B] Knobs (x 3) (screw x 1 ea.)
[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)
4. Paper feed roller
Remove:
• Remove the right cover (see 2.)
• Remove the paper trays. (see 1.)
[A] Pick-up roller (stopper x 1)
[B] Feed roller (stopper x 1)
[C] Separation roller (stopper x 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 dif-
ferent 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. Pre-
ventive Maintenance).
5. LCT motors
A. Transport motors, LCT exit motor
[A]
[B]
[C]
[D]
[E]
[F]
[A]
[B]
[C]
(1)
(2)
(3)
[A]
[B]

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 3
4th, 5th, and 6th Transport Motors (1), (2), (3)
Remove:
• Left rear cover (see 2.)
[A] Motor unit (connector x 1, Timing belt x 1, screw x 2)
[B] Motor (screw x 2)
LCT Exit Motor (4)
Remove:
• Left rear cover (see 2.)
[C] Motor unit (connector x 1, Timing belt x 1, screw x 3)
[D] Motor (screw x 2)
B. Feed motors/grip motors
Each paper feed unit has a pick-up feed motor (1) and a grip motor
(2). The removal procedure is the same for each feed tray.
1) Remove the left rear cover (see 2.)
2) Use a small screwdriver to turn the shaft [A] so the pin can slip
out of the keyhole.
Remove:
[B] Motor unit (screw x 4, clamp x 2, connector x 2)
[C] Springs (x 2). First, loosen the screws (x 2) (1), (2).
[D] Paper feed motor (screw x 2, Timing belt x 1)
[E] Grip motor (screw x 2, Timing belt x 1)
Reinstallation
• Attach the tension spring, then tighten the screws (3) to tighten
the belts.
C. Lift motors
4th, 6th Lift Motors
The procedure for removing the 4th and 6th lift motors is the same.
Remove:
• Rear cover. (see 2.)
[A] Motor unit (screw x 2, connector x 1)
[B] 4th (or 6th) lift motor (screw x 4, Clip x 1, Coupling x 1, Spring x
1)
5th Lift Motor
• Rear cover. (see 2.)
[C] Motor unit (screw x 4, connector x 1)
[D] 5th lift motor (screw x 2, Clip x 1, Coupling x 1, Spring x 1)
(4)
[C]
[D]
(1)
(2)
[A]
[B]
[C]
[D]
(1)
(2)
[E]
[A]
[B]
[C]
[D]

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 4
6. LCT exit sensor
• Disconnect the LCT from the copier.
[A] Exit sensor unit (screw x 1, connector x 1)
[B] Exit sensor
7. Paper path sensors
A. Removing the vertical feed unit
• Open the front door.
Remove:
• Upper inner cover (see 3.)
• Lower inner cover (see 3.)
• Left rear cover (see 2.)
1) Disconnect the harness clamps (1) and (2) (clamp x 2).
2) Disconnect the motor harnesses (3), (4), (5) (clamp x 3, con-
nector x 11).
3) Remove:
[A] Upper stay (screw x 2)
[B] Lower stay (screw x 2)
[C] Vertical feed unit (screw x 6)
B. 4th transport, 4th relay upper, lower sensors
1) Remove the vertical feed unit. (see A.)
2) Remove:
[A] 4th Transport sensor (screw x 1, connector x 1)
[B] 4th Relay sensor – upper (screw x 1, connector x 1)
[C] 4th Relay sensor – lower (screw x 1, connector x 1)
[A]
[B]
(1)
(2)
(3)
(4)
(5)
[A]
[B]
[C]
[A]
[B] [C]

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 5
C. 5th relay sensor, 5th transport sensor
1) Remove the vertical feed unit. (see A.)
2) Remove:
[A] 5th Relay sensor (screw x 1, connector x 1)
[B] 5th Transport sensor (screw x 1, connector x 1)
D. 6th relay sensor, 6th transport sensor
• Remove the vertical feed unit. (see A.)
[A] 6th Relay sensor (screw x 1, connector x 1)
[B] 6th Transport sensor (screw x 1, connector x 1)
8. Main control board
• Remove the rear covers. (see 2.)
[A] Main control board (screw x 6, Standoffs x 2, connector x All).
9. Paper height, paper width sensors
Paper Height Sensors
Remove:
• Rear left cover. (see 2.)
[A] Paper height sensor unit (screw x 2, connector x 4).
[B] Clamp bracket (screw x 2)
[C] Paper height sensors (x 4) (Hooks x 2 each)
Paper Width Sensors
• Rear left cover. (see 2.)
[D] Paper width sensor unit (screw x 2, connector x 3)
[E] Paper width sensors (x 3) (Hooks x 2 each)
10. Side registration adjustment
[A]
[B]
[A]
[B]
[A]
[A]
[B]
[C]
[D]
[E]
[A]

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 6
Normally the side registration of the image can be adjusted in the
SP mode.
If the punch hole positions are not aligned from a particular feed
station, however, you can manually adjust the side registration by
changing the tray cover position for that tray, and then adjust the
side registration of the image.
1) Pull out the tray.
2) Change the screw positions [A] at both the right and left sides
as shown.
NOTE: Adjustment range: 0 ±2.0 mm adjustment step: 1.0 mm/
step
11. Image position board and sensor
Image Position Sensor
• Disconnect the LCT from the copier.
[A] Image position sensor unit (screw x 2, connector x 1)
[B] Stopper (screw x 1)
[C] Image position sensor
• After replacing the image position sensor do the procedure for
image position sensor adjustment. (see 12.)
Image Position Sensor Board
• Disconnect the LCT from the copier.
[D] Cover (screw x 2, clamp x 2)
[E] Image position sensor board (screw x 2, connector x 2, clamp x
2)
12. Dehumidifier heater installing
procedures (0PQC4180431//)
A. Component parts
B. Installing procedures
1) Remove the lower-stage cassette. (6 screws)
2) Remove the rear cabinet. (6 screws)
[A]
[B]
[C]
[E]
[D]
Interface harness
(with heater line)
M4 washer screw
(x 1)
M4 screw (x 7)Heater cover
Clamp (x 2)
Heater
(x 2)

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 7
3) Remove the interface harness plate (2 screws), and remove
the harness.
4) Install two heaters with two screws fro each of them.
Attach the clamp.
5) Install a new interface harness, and insert the connector into
the PWB.
Fix the earth wire of the heater harness with the accessory
washer screw.
Screw (x 2)
Interface harness
Clamp (2 positions)
Interface
harness
Heater harness
section
Snapband fixing
Earth fixing screw
Snap band fixing

MX-LCX5 REPLACEMENT AND ADJUSTMENT 3 – 8
6) Install the heater cover. (3 screws)
7) Install the rear cabinet, and fix it with the fixing screw.
Fix the harness
with the clamp.
Snap band fixing
Connect the heater
and the harness.

MX-LCX5 DETAILED DESCRIPTIONS 4 – 1
MX-LCX5 Service Manual
[4] DETAILED DESCRIPTIONS
1. Paper feed
A. Paper feed rollers
This LCT has three paper tray feed stations:
The 4th and 6th tray each hold 1,000 sheets of paper. The 5th tray
holds 2,000 sheets of paper. Total: 4,000 sheets.
Each tray contains four rollers:
[A] Pick-up roller
[B] Paper feed roller
[C] Separation roller
[D] Grip roller
NOTE: The pick-up roller, paper feed roller, and separation roller
are a standard FRR paper feed system.
B. Paper feed motors
Two stepper motors control the paper feed drive:
[A] Paper feed motor
[B] Grip motor
The paper feed motor drives the pick-up roller [C] and the paper
feed roller [D].
The grip motor drives the grip roller [E] that feeds the paper out of
the tray, and the separation roller [F].
C. Paper separation
When a paper feed station is not selected:
• Separation roller solenoid [A] is de-activated
• Separation roller [B] turns freely.
When the paper feed station is selected for a job:
• Paper feed motor [C] and grip motor [D] turn on.
When the feed motor [C] turns on, it drives the feed roller [E]. It also
drives the pick-up roller [F] because the pick-up roller is linked to
the feed roller by an idle gear.
When the separation solenoid [A] turns on, the separation roller [B]
contacts the paper feed roller [E] and turns with the feed roller,
unless more than one sheet of paper is fed. The three trays of the
LCT unit use the standard FRR mechanism.
When the paper feed motor turns on, the pick-up solenoid turns on
and the pick-up roller [F] lowers until it contacts the top sheet of the
paper stack and then sends it to the paper feed and separation roll-
ers.
When the paper feed sensor detects the leading edge of the paper,
the paper feed motor switches off, the pick-up roller lifts, and the
grip rollers [G] feed the paper out of the tray.
[A]
[B]
[C]
[D]
[A]
[B]
[C]
[D]
[E]
[F]
[C]
[D]
[A]
[B]
[E][F]
[G]

MX-LCX5 DETAILED DESCRIPTIONS 4 – 2
2. Paper detection/lift
A. Mechanism
Detection
When the tray set in the machine, the tray is detected by the drawer
connector on the back side of the tray.
Lift
When the machine detects that the paper tray is set in the machine:
• The tray lift motor [A] rotates forward
• Coupling gear [B] on the tray lift motor engages pin [C] of the lift
drive shaft.
• The tray drive belts [D], connected to the tray bottom plate [E],
are driven by the tray lift motor via the lift drive shaft and tray lift
pulleys [F].
• When the lift motor rotates forward, the tray bottom plate [E]
rises. The tray rises until the top of the paper stack pushes up the
pick-up roller and the lift sensor in the feed unit is de-activated.
• When the actuator [G] on the rear end of the bottom plate acti-
vates the paper height sensors [H], the remaining paper capacity
is detected.
When the tray is pulled out:
• Coupling gear [B] separates from pin [C] and the tray bottom
plate goes down.
• A damper [I] slows the descent of the bottom plate. For the B834,
all three trays have this damper.
B. Lift sensor
When the lift motor turns on, the pick-up solenoid [A] activates to
lower the pick-up roller [B]. When the top sheet of paper reaches
the proper paper feed level, the paper pushes up the pick-up roller
and the actuator [C] on the pick-up roller supporter [D] de-activates
the lift sensor [E] to stop the lift motor.
After several paper feeds, the paper level gradually lowers, then
the lift sensor is activated and the lift motor turns on again until the
lift sensor is de-activated again.
3. Paper size detection
1) 4th Paper Width Sensor 3
2) 4th Paper Width Sensor 2
3) 4th Paper Width Sensor 1
4) 4th Paper Length Sensor
The 4th, 5th, and 6th trays have three paper width sensors and one
paper length sensor. The illustration above shows how these sen-
sors are arranged in the 4th tray.
This table describes how the three width sensors and one length
sensor are used to determine the paper size in the 4th, 5th, and 6th
paper trays.
YES: Detected automatically
NO: Not detected automatically. Requires size setting change with
the "Tray Paper Setting" key on the copier operation panel to detect
the desired paper size.
H: Sensor OFF
L: Sensor ON
[A]
[B]
[C]
[E]
[F]
[G]
[H]
[I]
[D]
[A]
[E]
[D][C]
[B]
Paper Size Width Sensors Length
Sensor Area
W1 W2 W3 L1 NA EU
Large
Size
12" x 18" L L L H YES YES
13" x 19" NO NO
320 x 450 mm NO NO
A3 SEF 297 x 420 mm L L H H YES YES
A4 LEF 297 x 210 mm L L H L YES YES
DLT SEF 11" x 17" L H L H YES YES
LT LEF 11" x 8 1/2" L H L L YES YES
B4 SEF 257 x 364 mm L H H H YES YES
B5 LEF 257 x 182 mm L H H L YES YES
A4 SEF 210 x 297 mm H L L H NO YES
LT SEF 8 1/2" x 11" H L L H YES NO
A5 LEF 210 x 148 mm H L L L NO YES
HLT LEF 8 1/2" x 5 1/2" H L L L YES NO
B5 SEF 182 x 257 mm H L H H NO NO
F SEF 8" x 13" H L H H YES YES
A5 SEF 148 x 210 mm H H L L YES YES
HLT SEF 5 1/2" x 8 1/2" H H H L YES YES
1
2
3
4

MX-LCX5 DETAILED DESCRIPTIONS 4 – 3
4. Remaining paper detection
[A] Paper Height Sensor Actuator
[B] 4th Paper Height Sensor 4
[C] 4th Paper Height Sensor 3
[D] 4th Paper Height Sensor 2
[E] 4th Paper Height Sensor 1 (Near End)
Each tray has four paper height sensors. The illustration above
shows the paper height sensors in the 4th tray. This arrangement is
duplicated in the 5th and 6th trays.
The amount of paper remaining in the tray is detected by the three
paper height photo-interrupter sensors on the left rail as the bottom
plate rises. Five states, determined by the position of the actuator
[A] are possible.
1) With the actuator [A] below paper height sensor 4 [B], no sen-
sor is actuated and the display indicates 100%.
2) When the actuator passes paper height sensor 4 [B] , the dis-
play indicates 70% of the paper supply remaining.
3) When the actuator passes paper height sensor 3 [C], the dis-
play indicates 30% of the paper supply remaining.
4) When the actuator passes paper height sensor 2 [D], the dis-
play indicates 10% of the paper supply remaining.
NOTE: When the actuator enters the gap of the near end sensor
[E], the machine signals near end.
Finally, when the last sheet feeds, the paper end sensor signals
that the tray is empty.
5. Paper end detection
The paper end sensor [A] detects the top sheet of the paper in the
tray by monitoring the reflected light. When the paper tray runs out
of paper, the paper end sensor does not receive the reflected light
due to the cutout [B]. Then, the tray lift motor rotates backwards 2
seconds to drop the tray bottom plate.
[A]
[B]
[C]
[E]
[D]
[A]
[B]

MX-LCX5 OVERALL MECHANICAL INFORMATION 5 – 1
MX-LCX5 Service Manual
[5] OVERALL MECHANICAL
INFORMATION
1. Mechanical component layout
*1: Each feed unit has 1 paper feed motor that drives the pick-up
roller and paper feed roller, and 1 grip motor that drives the separa-
tion roller and grip roller.
2. Drive layout
1 4th Paper Feed Unit*1
2 5th Paper Feed Unit
3 6th Paper Feed Unit
4 4th Tray Drive Belt
5 5th Tray Drive Belt
6 6th Tray Drive Belt
7 Lower Transport Rollers
8 Horizontal Transport Roller
9 LCT Exit roller
10 Upper Transport Rollers
11 Feed Slot (from Bypass Tray)
(1)
(2)
(3)
4
5
6
7
8
9
10
11
M1 4th Grip Motor
M2 4th Lift Motor
M3 4th Paper Feed Motor
M4 4th Transport Motor
M5 5th Grip Motor
M6 5th Lift Motor
M7 5th Paper Feed Motor
M8 5th Transport Motor
M9 6th Grip Motor
M10 6th Lift Motor
M11 6th Paper Feed Motor
M12 6th Transport Motor
M13 LCT Exit Motor
M13
M3
M1
M4M2
M6
M10
M11
M9
M12
M7
M5
M8

MX-LCX5 OVERALL MECHANICAL INFORMATION 5 – 2
3. Electrical components
S50
S15
S16 S17 S7S6S5S4S11 S10 S9S28
S27
S26
S8
S24
S23
S22
S21
S44
S43
S25
S42
S40
S39
S41
S38
S37
SW1
SOL6
S35
S36
S34
SOL5 S48
S33
S32
S49
S4 4th Paper Height Sensor 1
S5 4th Paper Height Sensor 2
S6 4th Paper Height Sensor 3
S7 4th Paper Height Sensor 4
S8 4th Paper Length Sensor
S9 4th Paper Width Sensor 1
S10 4th Paper Width Sensor 2
S11 4th Paper Width Sensor 3
S15 4th Relay Sensor
S16 4th Relay Sensor - Upper
S17 4th Transport Sensor
S21 5th Paper Height Sensor 1
S22 5th Paper Height Sensor 2
S23 5th Paper Height Sensor 3
S24 5th Paper Height Sensor 4
S25 5th Paper Length Sensor
S26 5th Paper Width Sensor 1
S27 5th Paper Width Sensor 2
S28 5th Paper Width Sensor 3
S32 5th Relay Sensor
S33 5th Transport Sensor
S34 6th Lift Sensor
S35 6th Paper End Sensor
S36 6th Paper Feed Sensor
S37 6th Paper Height Sensor 1
S38 6th Paper Height Sensor 2
S39 6th Paper Height Sensor 3
S40 6th Paper Height Sensor 4
S41 6th Paper Length Sensor
S42 6th Paper Width Sensor 1
S43 6th Paper Width Sensor 2
S44 6th Paper Width Sensor 3
S48 6th Relay Sensor
S49 6th Transport Sensor
S50 LCT Exit Sensor
SOL5 6th Pick-up Solenoid
SOL6 6th Separation Solenoid
SW1 Door Safety Switch
1 Main Control Board
2 Anti-Condensation Heaters (Options)
M1 4th Grip Motor
M2 4th Lift Motor
M3 4th Paper Feed Motor
M4 4th Transport Motor
M5 5th Grip Motor
M6 5th Lift Motor
M7 5th Paper Feed Motor
M8 5th Transport Motor
M9 6th Grip Motor
M10 6th Lift Motor
M11 6th Paper Feed Motor
M12 6th Transport Motor
M13 LCT Exit Motor
M11
M10
2(Option:
0PQC4180431//)
M9
M12
M13
M8 M4 M1 M3
M5
M7
M2
1
M6

MX-LCX5 OVERALL MECHANICAL INFORMATION 5 – 3
4. A3/DLT LCT MX-LCX5 layout (with
bypass)
5. Electrical component summary
M1 4th Grip Motor
M1 Paper Feed Motor Bypass (MX-MFX2)
M3 4th Paper Feed Motor
M3 Transport Motor Bypass (MX-MFX2)
M4 4th Transport Motor
M4 Grip Motor Bypass (MX-MFX2)
M5 5th Grip Motor
M7 5th Paper Feed Motor
M8 5th Transport Motor
M9 6th Grip Motor
M11 6th Paper Feed Motor
M12 6th Transport Motor
M13 LCT Exit Motor
S3 4th Paper Feed Sensor
S4 Paper Feed Sensor Bypass (MX-MFX2)
S8 Transport Sensor Bypass (MX-MFX2)
S15 4th Relay Sensor – Lower
S16 4th Relay Sensor – Upper
S17 4th Transport Sensor
S20 5th Paper Feed Sensor
S32 5th Relay Sensor
S33 5th Transport Sensor
S36 6th Paper Feed Sensor
S48 6th Relay Sensor
S49 6th Transport Sensor
S50 LCT Exit Sensor
Tray 4
Tray 5
Tray 6
Tray 7
(MX-MFX2)
M4
S16
M7
S20
M5
M8
S33
M11
S36
M1
S4
M4
S8
M3
M3
S3
M1
S17
M9
S49
M12
M13
S50 S32
S48
S15
Motors
No.
(Signal) Name Description
M1
(L1REVM)
4th Grip Motor Drives the separation roller and the grip
roller of the 4th tray.
M2
(L1PRM)
4th Lift Motor Drives the bottom plate of the 4th tray
up and down.
M3
(L1PUM)
4th Paper Feed
Motor
Drives the pick-roller and feed roller
that picks up each sheet and starts to
feed it out of the 4th tray.
M4
(L1PFM)
4th Transport
Motor
Drives the rollers in the vertical feed
path that feed the paper from the 4th
tray to the LCT exit motor.
M5
(L2REVM)
5th Grip Motor Drives the separation roller and the grip
roller of the 5th tray.
M6
(L2PRM)
5th Lift Motor Drives the bottom plate of the 5th tray
up and down.
M7
(L2PUM)
5th Paper Feed
Motor
Drives the pick-roller and feed roller
that picks up each sheet and starts to
feed it out of the 5th tray.
M8
(L2PFM)
5th Transport
Motor
Drives the transport rollers in the
vertical feed path that feed the paper
from the 4th tray and the 5th tray to the
LCT exit motor.
M9
(L3REVM)
6th Grip Motor Drives the separation roller and the grip
roller of the 6th tray.
M10
(L3PRM)
6th Lift Motor Drives the 5th tray up and down.
M11
(L3PUM)
6th Paper Feed
Motor
Drives the pick-roller and feed roller
that picks up each sheet and starts to
feed it out of the 6th tray.
M12
(L3PFM)
6th Transport
Motor
Drives the rollers in the vertical feed
path that feed the paper from the 6th
tray to the LCT exit motor.
M13
(PEM)
LCT Exit Motor Feeds the paper out the LCT and into
the entrance of the copier.
PCBs
No. Name Description
PCB1 Main Control
Board
Controls the operation of all motors and
sensors in the LCT unit.

MX-LCX5 OVERALL MECHANICAL INFORMATION 5 – 4
Sensors
No.
(Signal) Name Description
S1
(L1ULS)
4th Lift Sensor Detects when the paper in the 4th tray
is at the correct height for paper feed
and switches the 4th lift motor off.
S2
(L1PES)
4th Paper End
Sensor
Detects when the last sheet feeds from
the 4th tray.
S3
(L1PFS)
4th Paper Feed
Sensor
Detects the paper when it arrives at the
4th paper feed roller and checks for
misfeeds.
S4
(L1PVS1)
4th Paper Height
Sensor 1
4th from the bottom of the 4th tray,
detects stack height: 100%
S5
(L1PVS2)
4th Paper Height
Sensor 2
5th from the bottom of the 4th tray,
detects stack height: 75%
S6
(L1PVS3)
4th Paper Height
Sensor 3
6th from the bottom of the 4th tray,
detects stack height: 50%
S7
(L1PVS4)
4th Paper Height
Sensor 4
4th from the bottom of the 4th tray,
detects stack height: 25% and signals
near-end.
S8 (L1LS) 4th Paper Length
Sensor
Detects the length of the paper in the
4th tray (used in combination with the
paper width sensors).
S9
(L1SIZ1)
4th Paper Width
Sensor 1
1 of a set of 3 sensors that detect the
width of the paper in the 4th tray.
S10
(L1SIZ2)
4th Paper Width
Sensor 2
1 of a set of 3 sensors that detect the
width of the paper in the 4th tray.
S11
(L1SIZ3)
4th Paper Width
Sensor 3
1 of a set of 3 sensors that detect the
width of the paper in the 4th tray.
S15
(L1IDS)
4th Relay Sensor Detects the leading and trailing edges
of the paper in the paper path near the
bottom of the 4th tray. Checks the
timing of the feed and signals a jam if
the paper is late or lags at this location.
S16
(L1IUS)
4th Relay Sensor -
Upper
Detects the leading and trailing edges
of the paper in the paper path near the
top of the 4th tray. Checks the timing of
the feed and signals a jam if the paper
is late or lags at this location.
S17
(L1TS)
4th Transport
Sensor
Detects jams in the paper path where
the transport motor feeds the paper
from the 4th tray.
S18
(L2ULS)
5th Lift Sensor Detects when the paper in the 5th tray
is at the correct height for paper feed
and switches the 4th lift motor off.
S19
(L2PES)
5th Paper End
Sensor
Detects when the last sheet feeds from
the 5th tray.
S20
(L2PFS)
5th Paper Feed
Sensor
Detects the paper when it arrives at the
5th paper feed roller and checks for
misfeeds.
S21
(L2PVS1)
5th Paper Height
Sensor 1
4th from the bottom of the 5th tray,
detects stack height: 100%
S22
(L2PVS2)
5th Paper Height
Sensor 2
5th from the bottom of the 5th tray,
detects stack height: 75%
S23
(L2PVS3)
5th Paper Height
Sensor 3
6th from the bottom of the 5th tray,
detects stack height: 50%
S24
(L2PVS4)
5th Paper Height
Sensor 4
4th from the bottom of the 5th tray,
detects stack height: 25% and signals
near-end.
S25
(L2LS)
5th Paper Length
Sensor
Detects the length of the paper in the
5th tray (used in combination with the
paper width sensors).
S26
(L2SIZ1)
5th Paper Width
Sensor 1
1 of a set of 3 sensors that detect the
width of the paper in the 5th tray.
S27
(L2SIZ2)
5th Paper Width
Sensor 2
1 of a set of 3 sensors that detect the
width of the paper in the 5th tray.
S28
(L2SIZ3)
5th Paper Width
Sensor 3
1 of a set of 3 sensors that detect the
width of the paper in the 5th tray.
S32
(L2IUS)
5th Relay Sensor Detects the leading and trailing edges
of the paper in the paper path near the
5th tray. Checks the timing of the feed
and signals a jam if the paper is late or
lags at this location.
S33
(L2TS)
5th Transport
Sensor
Detects jams in the paper path where
the transport motor feeds the paper
from the 5th tray.
S34
(L3ULS)
6th Lift Sensor Detects when the paper in the 6th tray
is at the correct height for paper feed
and switches the 4th lift motor off.
S35
(L3PES)
6th Paper End
Sensor
Detects when the last sheet feeds from
the 6th tray.
S36
(L3PFS)
6th Paper Feed
Sensor
Detects the paper when it arrives at the
6th paper feed roller and checks for
misfeeds.
S37
(L3PVS1)
6th Paper Height
Sensor 1
4th from the bottom of the 6th tray,
detects stack height: 100%
S38
(L3PVS2)
6th Paper Height
Sensor 2
5th from the bottom of the 6th tray,
detects stack height: 75%
S39
(L3PVS3)
6th Paper Height
Sensor 3
6th from the bottom of the 6th tray,
detects stack height: 50%
S40
(L3PVS4)
6th Paper Height
Sensor 4
4th from the bottom of the 6th tray,
detects stack height: 25% and signals
near-end.
S41
(L3LS)
6th Paper Length
Sensor
Detects the length of the paper in the
6th tray (used in combination with the
paper width sensors).
S42
(L3SIZ1)
6th Paper Width
Sensor 1
1 of a set of 3 sensors that detect the
width of the paper in the 6th tray.
S43
(L3SIZ2)
6th Paper Width
Sensor 2
1 of a set of 3 sensors that detect the
width of the paper in the 6th tray.
S44
(L3SIZ3)
6th Paper Width
Sensor 3
1 of a set of 3 sensors that detect the
width of the paper in the 6th tray.
S48
(L3IUS)
6th Relay Sensor Detects the leading and trailing edges
of the paper in the paper path near the
6th tray. Checks the timing of the feed
and signals a jam if the paper is late or
lags at this location.
S49
(L3TS)
6th Transport
Sensor
Detects jams in the paper path where
the transport motor feeds the paper
from the 6th tray.
S50
(LEXIT)
LCT Exit Sensor Detects jams at the exit of the LCT unit.
Sensors
No.
(Signal) Name Description

MX-LCX5 OVERALL MECHANICAL INFORMATION 5 – 5
Solenoids
No.
(Signal) Name Description
SOL1
(L1PUS)
4th Pick-up
Solenoid
Engages/disengages rotation of the
pick-up roller in the 4th tray.
SOL2
(L1REVS)
4th Separation
Solenoid
Controls up-down movement of the
separation roller in the 4th tray.
SOL3
(L2PUS)
5th Pick-up
Solenoid
Engages/disengages rotation of the
pick-up roller in the 5th tray.
SOL4
(L2REVS)
5th Separation
SOL
Controls up-down movement of the
separation roller in the 5th tray.
SOL5
(L3PUS)
6th Pick-up
Solenoid
Engages/disengages rotation of the
pick-up roller in the 6th tray.
SOL6
(L3REVS)
6th Separation
Solenoid
Controls up-down movement of the
separation roller in the 6th tray.
Switches
No.
(Signal) Name Description
SW1
(LILSW)
Door Safety
Switch
An interlock safety switch that detects
when the front door is opened and
closed.
Other
No. Name Description
H1, H2 Anti-Condensation
Heaters
Evaporates moisture around the trays in
the LCT (230V 18W). This is an option