Rico LCIT RT5110 Quick start guide

LCIT RT5110
Machine Code:D3ET
Field Service Manual
Ver 1.0
Latest Release: Feb, 2018
Initial Release: Feb, 2018
(c) 2018 Ricoh Co.,Ltd.

Symbols, Abbreviations
This manual uses several symbols and abbreviations. The meaning of those symbols and abbreviations
are as follows:
Symbol
What it means
Clip ring
Screw
Connector
Clamp
E-ring
Flat Flexible Cable
Timing Belt
SEF
Short Edge Feed
LEF
Long Edge Feed
K
Black
C
Cyan
M
Magenta
Y
Yellow
B/W, BW
Black and White
FC
Full color
[A] Short Edge Feed (SEF)
[B] Long Edge Feed (LEF)

1
Table of Contents
1. Replacement and Adjustment ............................................................................................................ 3
Removing Trays ..................................................................................................................................... 3
Doors and Covers................................................................................................................................... 5
Top Covers ......................................................................................................................................... 5
Left Rear Cover .................................................................................................................................. 6
Right Rear Cover ................................................................................................................................ 6
Right Cover......................................................................................................................................... 7
Inner Covers ....................................................................................................................................... 7
Jam LED ............................................................................................................................................... 10
Jam LED (LCIT Exit)......................................................................................................................... 10
Jam LED (1st to 3rd Tray Unit)......................................................................................................... 10
Paper Feed ........................................................................................................................................... 12
Paper Feed Unit................................................................................................................................ 12
Paper Feed, Separation and Pickup Rollers .................................................................................... 13
LCT Motors........................................................................................................................................... 19
Transport Motors, LCT Exit Motor .................................................................................................... 19
Lift Motors ......................................................................................................................................... 20
Exit Roller Lift Motor ......................................................................................................................... 22
Cooling Fan....................................................................................................................................... 23
Electrical Components.......................................................................................................................... 24
Paper Feed and End Sensors .......................................................................................................... 24
Lift Sensor......................................................................................................................................... 25
LCT Exit Sensor................................................................................................................................ 25
Exit Roller Lift Sensor ....................................................................................................................... 26
Removing the Vertical Feed Unit...................................................................................................... 27
1st Transport, 1st Relay Upper, Lower Sensors .............................................................................. 29
2nd Relay Sensor, 2nd Transport Sensor........................................................................................ 29
3rd Relay Sensor, 3rd Transport Sensor.......................................................................................... 30
Main Control Board........................................................................................................................... 30
Paper Height, Paper Width Sensors ................................................................................................ 30
Adjustment............................................................................................................................................ 32
Side Registration Adjustment ........................................................................................................... 32
2. Troubleshooting ................................................................................................................................ 33
Double Feed Problem from LCT .......................................................................................................... 33
3. Detailed Descriptions........................................................................................................................ 34
Specifications........................................................................................................................................ 34
Mechanical Component Layout............................................................................................................ 35

2
Overview Layout ............................................................................................................................... 35
Drive Layout...................................................................................................................................... 36
Electrical Components...................................................................................................................... 37
Roller Drive Layout ........................................................................................................................... 41
Paper Transport Layout.................................................................................................................... 42
Paper Handling..................................................................................................................................... 43
Paper Feed Rollers........................................................................................................................... 43
Paper Feed Motors........................................................................................................................... 43
Paper Separation.............................................................................................................................. 44
Paper Detection and Lift ................................................................................................................... 47
Lift Sensor......................................................................................................................................... 48
Paper Size Detection........................................................................................................................ 49
Remaining Paper Detection.............................................................................................................. 50
Air Assist Feed Mechanism .............................................................................................................. 51
Paper End Detection......................................................................................................................... 52
Jam Detection LED........................................................................................................................... 52
Increased the Rigidity of the Side Fence.......................................................................................... 54

1.Replacement and Adjustment
3
1. Replacement and Adjustment
Removing Trays
The 1000-sheet tray weighs 27 kg (60 lb) empty. The 2000-sheet tray weighs 20 kg (44 lb)
empty.
To prevent damage to the tray and personal injury, never attempt to lift a tray alone or without
attaching the carrying handles, especially if a tray is loaded with paper.
Two people on each side of the tray should lift the carrying handles 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.
Only one set of carrying handles is attached to the side of Tray 4. Follow the procedure below
to attach and use these handles to move Tray 3, 4, or 5.
1. Pull the tray out of the LCT until it stops.
2. Remove the screws from the right rail ( x3).
3. Remove the screws from the left rail ( x3).
You do not need to remove 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 ( x 2 ea.)
5. Use the same screws to attach the carrying handles at and .

1.Replacement and Adjustment
4
6. With one person on each side of the tray, lift it carefully and remove it from the rails.

1.Replacement and Adjustment
5
Doors and Covers
Top Covers
The top covers must be removed in order from left to right.
1. Open the front door.
2. Disconnect the front [A] and rear [B] ( x4).
3. Remove the top left cover.
4. Remove the left flat cover ( x2).

1.Replacement and Adjustment
6
5. Remove the center flat cover ( x2).
6. Remove the right flat cover ( x2).
Left Rear Cover
1. Remove the left rear cover [A] ( x8).
Right Rear Cover
1. Remove the left rear cover. (Left Rear Cover)

1.Replacement and Adjustment
7
2. Remove the right rear cover [A] ( x6).
Right Cover
1. Pull all the LCT trays out a short distance.
2. Remove the right cover [A] ( x6)
Inner Covers
Inner Upper Cover
1. Open the front door.

1.Replacement and Adjustment
8
2. Remove the knob [A].
3. Lower the lever, and then remove the inner upper cover [A].
Inner Lower Cover
1. Open the front door.
2. Remove the inner lower cover [A] ( x2)
Be careful not to interfere with the hook.

1.Replacement and Adjustment
9

1.Replacement and Adjustment
10
Jam LED
Jam LED (LCIT Exit)
1. Open the front door.
2. Remove the inner upper cover. (Inner Upper Cover)
3. Remove the jam LED (LCIT exit) [A].
Jam LED (1st to 3rd Tray Unit)
The 2nd tray LED is taken in the photos in the following replacement procedure as an example, but you
can replace other jam detection LEDs in the same way.
1. Open the front door.
2. Remove the inner cover.
For the 1st, and 2nd paper feed unit, remove the inner upper cover (Inner Upper Cover).
For the 3rd paper feed unit, remove the inner lower cover (Inner Lower Cover).

1.Replacement and Adjustment
11
3. Remove the knob [A] of the paper feed unit.
4. Remove the cover [A] of the paper feed unit.
5. Remove the jam LED [A].

1.Replacement and Adjustment
12
Paper Feed
Paper Feed Unit
1. Pull out the 1st, 2nd or 3rd tray.
2. Remove the Inner upper or lower cover. (Inner Covers
For the paper feed unit in the top tray or middle tray, remove the inner upper cover.
For the paper feed unit in the bottom tray, remove the inner lower cover.
3. Pull the paper feed unit [A] ( x 2).
4. Remove the stopper bracket [B] ( x 1).
5. Pull the paper feed unit [A] out fully, and then lift it.
When reinstalling the paper feed unit
When reinstalling the paper feed unit, align the cutout in the slide rail with the stud screw, and then
install the paper feed unit.

1.Replacement and Adjustment
13
Paper Feed, Separation and Pickup Rollers
1st Tray (Top Tray)
Before doing this procedure, turn off the main machine and disconnect it from its power
source.
1. Open the front door [A].
2. Pull out the top tray [B] until it stops.

1.Replacement and Adjustment
14
3. Remove the side plate [A] ( x 2).
4. Pull the paper feed unit [A].
5. Slide the sensor bracket [A] to the front ( x 1).
Note the original position of this bracket. It must be re-installed at its original position.
6. Remove:
[A]: Paper feed roller ( x 1)
[B]: Separation roller ( x 1)
[C]: Pickup roller ( x 1)

1.Replacement and Adjustment
15
2nd Tray (Middle Tray)
Before doing this procedure, turn off the main machine and disconnect it from its power
source.
1. Open the front door [A].
2. Pull out the middle tray [B].
3. Remove the side plate [A] ( x 2).

1.Replacement and Adjustment
16
4. Pull the paper feed unit [A] ( x 2).
5. Slide the sensor bracket [A] to the front ( x 1).
Note the original position of this bracket. It must be re-installed at its original position.
6. Remove:
[A]: Paper feed roller ( x 1)
[B]: Separation roller ( x 1)
[C]: Pickup roller ( x 1)