Sharp MX-LCX4 Service Manual ▷ View online
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 1
MX-LCX4
Service Manual
[3] REPLACEMENT AND
ADJUSTMENT
1. Front door and covers
[A] Top cover (screw x 4).
[B] Front door (stopper x 1).
[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).
[D] Right cover (screw x 6).
[E] Paper slot cover (screw x 2).
2. Inner cover, paper feed unit
• 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)
• 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
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).
• 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).
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.
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.
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).
[C]
[B]
[D]
[E]
[A]
[A]
[B]
[C]
[D]
[E]
[F]
[A]
[B]
[C]
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 2
4. LCT motors
A. Paper feed, grip motors
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
(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] 6th lift motor (screw x 2, connector x 1)
• Rear cover (see 1.)
[A] 6th lift motor (screw x 2, connector x 1)
C. 4th transport 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
• 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]
(1)
(2)
[C]
[D]
(3)
[B]
[A]
[A]
[B]
[C]
(1)
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 3
D. 5th transport motor
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
• 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).
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
• 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
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
• 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).
[A]
[B]
[C]
(1)
[A]
[B]
[C]
(1)
[A]
[B]
[C]
(1)
MX-LCX4 REPLACEMENT AND ADJUSTMENT 3 – 4
G. 4th, 5th lift motors
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)
• 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
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
[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.)
B. Image position sensor board
[E] Image position sensor board (screw x 2, clamp x 1, connector x
2)
2)
C. Exit sensor
[F] Exit sensor unit (screw x 1, connector x 1, clamp x 1)
[G] Exit sensor
[G] Exit sensor
6. Paper height sensors, paper size
sensors
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)
• 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
Remove:
• Rear cover. (see 1.)
[A] Main control board (screw x 6, Standoffs x 2, connector x All)
• Rear cover. (see 1.)
[A] Main control board (screw x 6, Standoffs x 2, connector x All)
[A]
[B]
[C]
[A]
[B]
[C]
[D]
[E]
[G]
[F]
[A]
[B]
[A]
[B]
[C]
4th/5th Tray
6th Tray
[A]
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