Ricoh TR5050 Quick start guide

Trimmer Unit TR5050
Machine Code: D3GG
Field Service Manual
Ver 1.0
Latest Release: March, 2019
Initial Release: March, 2019
Copyright (c) 2019 Ricoh Co.,Ltd.

Symbols, Abbreviations
This manual uses several symbols and abbreviations. The meaning of those symbols and abbreviations
are as follows:
Symbol Meaning
Clip ring
Screw
Connector
Clamp
E-ring
Flat flexible cable
Timing belt
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. Detailed Descriptions.......................................................................................................................... 2
Specifications.......................................................................................................................................... 2
Layout ..................................................................................................................................................... 3
General Layout ................................................................................................................................... 3
Electrical Component Layout.............................................................................................................. 4
Motor Layout....................................................................................................................................... 7
Unlocking the Cutter ........................................................................................................................... 7
2. Replacement and Adjustment ............................................................................................................ 9
Common Procedures.............................................................................................................................. 9
Before You Begin................................................................................................................................ 9
Covers, Tray Unit, Door.................................................................................................................... 10
Feed Unit .......................................................................................................................................... 14
Trim Positioning Unit......................................................................................................................... 17
Transport Unit ................................................................................................................................... 21
Trimming Blade, Blade Cradle ............................................................................................................. 23
Trimming Blade Cover...................................................................................................................... 23
Trimming Blade................................................................................................................................. 23
Blade Cradle ..................................................................................................................................... 27
Motors................................................................................................................................................... 28
Cutter Motor...................................................................................................................................... 28
Feed Unit .......................................................................................................................................... 28
Trim Positioning Unit......................................................................................................................... 29
Transport Unit ................................................................................................................................... 35
Tray Unit ........................................................................................................................................... 36
Sensors, Switches ................................................................................................................................ 41
Feed Unit .......................................................................................................................................... 41
Trim Positioning Unit......................................................................................................................... 41
Trimming Unit ................................................................................................................................... 46
Tray Unit ........................................................................................................................................... 51
Switches............................................................................................................................................ 55
Boards .................................................................................................................................................. 60
Main Board........................................................................................................................................ 60
Voltage Regulator ............................................................................................................................. 61

1.Detailed Descriptions
2
1. Detailed Descriptions
Specifications
Item Specification Note
Configuration Small console
Line Speed 349.3 mm/s (Between each stack: 8.2 secs or longer)
Supported Paper
Sizes
13 x 19.2, 13 x 19, 12.6 x 19.2, 12.6 x 18.5, 13 x 18, SRA3 (320
x 420 mm), 12 x 18, A3, B4, SRA4 (320 x 225 mm), 226 x 310
mm, A4, B5, DLT, LG, LT
Custom Size
Width: 182 - 330 mm
Length: 257 - 488 mm (before folding)
Paper Capacity Up to 30 sheets Folded and
saddle-
stitched
Dimensions 1,115 x 591 x 555 mm (43.9 x 23.3 x 21.9 inches)
Weight 75 kg (165.4 lb) or less
Power
requirements
100 - 240 V, 2 A, 50/60 Hz
Power
consumption
75 W
Maximum: 250 W
Trimmer
Item Specification Note
Cutter Type Guillotine
Trim Capability 60 sheets (80g/m2) Folded and saddle-stitched
Exit Tray
Booklet Length After
Trimming (mm)
Typical
Sizes
1-5
Sheets
6-10
Sheets
11-15
Sheets
16-20
Sheets
21-30
Sheets
118.5 or
longer
Shorter than
133.0
B5 60 35 25 20 20
133.0 or
longer
Shorter than
160.0
A4, LT 60 35 25 20 20
160.0 or
longer
Shorter than
190.1
B4, LG 60 40 25 20 20
191.0 or
longer
Shorter than
242.0
A3, DLT 60 40 25 25 20

1.Detailed Descriptions
3
Layout
General Layout
1. Feed unit
2. Trim positioning unit
3. Transport unit
4. Tray unit
5. Cutter unit
6. Scrap hopper
Paper is fed from the finisher or interposer tray and saddle stitched. The booklet exits the finisher from
its spine, and goes into the trimmer unit.
Feed Unit
The booklet enters the trimmer via the entrance guide plate, and is transported between the upper and
lower feed guides. The upper guide has a round cross-section belt, and the lower guide has a flat one.
In order to transport booklets of various thicknesses, the upper paper feed guide rotates around a
fulcrum on the entrance side, adjusting the gap between the upper and lower guides according to the
thickness of the booklet.
Trim Positioning Unit
The booklet is transported from the feed unit to the trim positioning unit. The trim positioning unit has a
transport mechanism with a flat belt similar to that of the lower feed guide of the feed unit. On the upper
side, it has an edge stopper that can be moved according to the booklet size and trimming width.
The spine of the booklet is pushed to the claws of the edge stopper (claw unit), at a position determined
using booklet size and trim position information from the imaging device. Then, a press mechanism

1.Detailed Descriptions
4
consisting of a claw unit press motor holds down and flattens the booklet in preparation for trimming.
Cutter Unit
There is a cutter unit between the feed unit and the trim positioning unit. The unit has a guillotine cutter:
the upper blade has a sharp edge and moves according to the shearing angle, while the lower blade is
blunt and is fixed at an obtuse edge of about 90 degrees. The upper blade of the cutter unit drops down
to cut the booklet at the specified trim position. In order to prevent the stack of sheets from shifting
during trimming, a press mechanism firmly holds down the booklet near its trim edge, before the upper
blade is lowered.
Scrap Hopper
Paper scraps drop down from the cutter unit into the scrap hopper underneath the cutting section.
Sensors detect if the scrap hopper is set, and when it is full.
Tray Unit
After the booklet is trimmed, pressure on the booklet is released, and it is transported to the exit of the
trim positioning unit by a transport mechanism at the lower end of the unit. The booklet is then output to
the tray by paper exit rollers (not shown in diagram). A flat belt is driven to transfer each booklet slowly
onto the output tray, so as to ensure that they are stacked properly. By changing the amount that the
belt moves according to the size and thickness of the booklet, the overlap amount between booklets
can be adjusted, so that stacking and stack capacity can be assured.
Tray Full is detected using a combination of Exit Tray Sensor 2, which detects the rotation angle of the
paper exit lever at the paper exit, and Exit Tray Sensor 1 at the front edge of the paper exit tray,
Specifically, when the Paper Remaining Sensor and Exit Tray Sensor 1 turn on, and Exit Tray Sensor 2
reaches a certain angle, a tray full signal is sent.
Electrical Component Layout

1.Detailed Descriptions
5
No. Part Description
1 Cut HP sensor Detects the home position of the movable blade of the cutter unit.
2 Exit sensor Detects that a trimmed paper stack is output to the paper tray.
3 Exit motor Transports the trimmed paper stack to the output tray.
4 Feed motor Moves the transport belt in the feed unit.
5 Scrap hopper HP sensor Detects the home position of the scrap hopper.
6 Entrance sensor Detects the feeding of paper.
7 Scrap hopper full sensor Detects when the scrap hopper is full.
8 Door switch Detects when the door is open, and cuts off the power voltage.
9 Cutter motor Drives the cutter unit.
No. Part Description
10 End Fence Switch Turns off when the user removes the stopper, and automatically
switches to limitless mode.
11 Exit tray sensor 3 Third sensor detecting exit tray full.
12 Tray motor Moves the transport belt of the tray.
13 Exit tray sensor 2 Second sensor detecting exit tray full.
14 Exit tray sensor 1 First sensor detecting exit tray full.
15 Cut position Motor Moves the stopper that determines the trim position of the booklet.
16 Press Stopper motor Lowers/ raises the stopper plate. Also presses the folded end of the
booklet after the trim position is determined.
17 Stopper assembly
HP sensor
Detects the home position of the stopper assembly.
18 Press Stopper HP Detects the home position of the press stopper and the pressure plate.

1.Detailed Descriptions
6
No. Part Description
Sensor
19 Press Roller Motor Drives rhe press rollers at the entrance of the trim positioning unit.
20 Press Roller HP
Sensor
Detects the home position of the pressure roller.
21 Stopper Sensor Detects when the booklet is near the stopper.
No. Part Description
22 Main Board Circuit board controlling the entire trimmer.
23 PSU Converts alternating current to direct current, and sends current of the specified
voltage to the main board.
24 Breaker
Switch
Turns ON/ OFF the power supply. Also shuts off the supply of voltage when a
leakage occurs.

1.Detailed Descriptions
7
Motor Layout
No. Part
1 Tray motor
2 Cut position motor
3 Exit motor
4 Feed motor
Unlocking the Cutter
If an SC is generated due to cutter lock, release it using the following method.
1. Turn the power OFF and then ON
If the cutter was locked due to reasons such as a common jam, after restarting the machine the
cutter will rotate in reverse and recover automatically.
•When the cutter is locked, the cutting edge of the cutter may be chipped. After unlocking
the cutter, check if there is any problem with the cutting edge.
2. If the problem is not resolved even after turning the power OFF and then ON, use the cutter shifting
button at the lower left of the board to move the cutter to its home position.
Pressing the button once will trigger a recovery movement (cutter reverse rotation) for 0.1 sec only.
Holding down the button will not lengthen the cutter's reverse rotation. Therefore, press the button
several times slowly (at about 1 sec pitch).

1.Detailed Descriptions
8
•When the cutter is locked, the cutting edge of the cutter may be chipped. After unlocking
the cutter, check if there is any problem with the cutting edge.
Unlocking Procedure
1. Remove the rear cover. (Rear Cover)
2. Press the cutter shifting button at the lower left of the board to move the cutter to its home position.

2.Replacement and Adjustment
9
2. Replacement and Adjustment
Common Procedures
Before You Begin
Remove the covers, door, and tray in this order for major maintenance and cleaning:
Rear cover ( x3)
Left upper cover ( x2)
Top cover ( x5)
Front door ( x4)
Left bottom cover ( x2)
Tray unit ( x2, x2)

2.Replacement and Adjustment
10
Covers, Tray Unit, Door
Rear Cover
1. Remove the rear cover [A] by lifting it upwards. ( x3)
Left Upper Cover
1. Remove the left upper cover [A]. ( x2)

2.Replacement and Adjustment
11
Top Cover
1. Remove the screws fixing the top cover [A]. ( x 6)
2. Remove the screws in the following positions:
[A] Left ( x2)
[B] Rear ( x1)
[C] Front ( x2)

2.Replacement and Adjustment
12
3. Lift off the top cover.
Door
1. Remove the rear cover. (Rear Cover)
2. Remove the top cover. (Top Cover)
3. Open the front door.

2.Replacement and Adjustment
13
4. Remove the top hinge [A] ( x2).
5. Lift the door off.
Left Lower Cover
1. Remove the door. (Door)
2. Remove the left upper cover. (Left Upper Cover)
3. Remove the left lower cover [A] ( x2)
Tray Unit
1. Remove the left upper cover. (Left Upper Cover)
2. Remove the door. (Door)
3. Remove the left lower cover. (Left Lower Cover)

2.Replacement and Adjustment
14
4. Remove the connectors in the rear left corner. ( x2).
5. Remove the screws near the bottom of the tray [A]. ( x2).
6. Grip both sides of the tray [A]. Lift it straight up to disengage the four metal hooks from their holes,
and then pull the tray away from the side of the trimmer unit.
Feed Unit
1. Remove the rear cover. (Rear Cover)
2. Remove the top cover. (Top Cover)

2.Replacement and Adjustment
15
3. Rotate Lever A1 [A] clockwise to lower the feed unit. Disconnect the feed motor [B]. ( x1, x1)
4. Disconnect the arm [A]. ( x2).
5. Rotate Lever A1 [A], and remove the swing plates.

2.Replacement and Adjustment
16
6. Remove the e-rings at both ends of of the shaft [A]. ( x2).
Pull out the shaft.