Ricoh PB2030 Quick start guide

Paper Feed Unit PB2030/2040
Machine Code:D3F1
Field Service Manual
Ver 1.0
Latest Release: December, 2018
Initial Release: December, 2018
(c) 2018 Ricoh Co.,Ltd.

Symbols, Abbreviations
This manual uses the following symbols and abbreviations:
Symbols:
Screw
Black screw
Connector
Flexible flat cable (FFC)
hook
Clamp
Clip ring
E-ring
C-ring
Timing belt
Spring
Location of a screw(s) to be tightened or loosened.
Location of a connector(s), clamp(s) or spring(s) to be removed
Direction (Rotating or moving)
Abbreviations:
Abbreviation
Meaning
LEF
Short Edge Feed
SEF
Long Edge Feed
Abbreviations such as (M1), (S1), or (TH1) after the names of some electrical components indicates
that those components are shown on a Point-to-Point diagram.
[A] Short Edge Feed (SEF)
[B] Long Edge Feed (LEF)

1
Table of Contents
1. Mechanism.......................................................................................................................................... 2
Overview................................................................................................................................................. 2
Paper Path.............................................................................................................................................. 3
Drive Layout............................................................................................................................................ 4
Parts Layout............................................................................................................................................ 5
Paper Feed and Separation................................................................................................................... 6
Paper Lift Mechanism............................................................................................................................. 7
Paper End Detection .............................................................................................................................. 9
Paper Size Detection............................................................................................................................ 10
Side Fences.......................................................................................................................................... 12
Related SPs.......................................................................................................................................... 13
2. Replacement and Adjustment .......................................................................................................... 14
Covers and Roller................................................................................................................................. 14
Paper Tray........................................................................................................................................ 14
Rear Cover........................................................................................................................................ 15
Pick-up Roller ................................................................................................................................... 16
Paper Feed Roller............................................................................................................................. 17
Friction Roller.................................................................................................................................... 17
Vertical Transfer Rollers................................................................................................................... 18
Motors and Clutch ................................................................................................................................ 22
Tray Lift Motor (M2).......................................................................................................................... 22
Transport Motor (M1)........................................................................................................................ 22
Paper Feed Clutch (CL1).................................................................................................................. 23
Sensors and Board............................................................................................................................... 25
Paper End Sensor (S2) .................................................................................................................... 25
Tray Lift Sensor (S3)......................................................................................................................... 25
Paper Feed Sensor (S1)................................................................................................................... 26
Tray Set Switch (SW1) ..................................................................................................................... 26
Right Door Switch (SW1).................................................................................................................. 26
Main Board (PCB1)........................................................................................................................... 27

1.Mechanism
2
1.Mechanism
Overview
No.
Description
No.
Description
1
Vertical transfer roller
4
Pick-up roller
2
Paper feed roller
5
Tray bottom plate
3
Friction roller

1.Mechanism
3
Paper Path

1.Mechanism
4
Drive Layout
No.
Description
No.
Description
1
Tray lift motor (M2)
3
Transport motor (M1)
2
Paper feed clutch (CL1)

1.Mechanism
5
Parts Layout
No.
Description
No.
Description
1
Paper feed clutch (CL1)
5
Paper end sensor (S2)
2
Transport motor (M1)
6
Paper feed sensor (S1)
3
Tray lift motor (M2)
7
Main board (PCB1)
4
Tray lift sensor (S3)

1.Mechanism
6
Paper Feed and Separation
The paper feed unit employs an RF system.
In a conventional FRR system, double feed of paper is prevented by reverse rotation of the separating
roller.
However, paper separation of the RF system is assisted by the resistance of a friction roller [A] with a
torque limiter (reverse drive is not performed).
When the paper feed tray is set in the machine, the tray bottom plate is lifted up, and the pick-up roller
[B] contacts the top of the stuck paper.
When the transport motor (M1) [C] and the paper feed clutch (CL1) [D] is switched ON, the rollers
rotate, and then the paper is supplied to the mainframe by the paper feed roller [E] and vertical
transport roller [F].
The paper feed sensor [G] detects the leading edge and trailing edge of the paper to control the feed
timing and determine a paper jam.
The roller holder functions as a paper guide and roller clip ring. The roller holder prevents the paper
from winding up.

1.Mechanism
7
Paper Lift Mechanism
When the paper feed tray is set in the machine, the tray set switch (SW2) at the rear of the tray
switches ON, and it is detected that the tray is set.
The coupling [B] between the shaft [A] at the rear of the tray and the tray lift motor (M2) [C] then
engages, the motor rotates, and the tray bottom plate [D] is lifted.
The tray bottom plate lifts until the paper surface pushes up the pick-up roller [A], the tray lift sensor
(S3) [B] switches OFF (interrupt) by the tray lift feeler [C], and the machine enters the paper feed

1.Mechanism
8
standby mode.
When the tray is removed, the coupling is released, and the tray bottom plate moves down.
The lift motor then rotates until the coupling returns to the home position.

1.Mechanism
9
Paper End Detection
If there is some paper in the paper tray, the paper stack raises the paper end feeler [A] and the paper
end sensor (S2) [B] is deactivated.
When the paper tray runs out of paper, the paper end feeler drops into the cutout [C] in the tray bottom
plate and the paper end sensor (S2) is activated.
When the paper tray is drawn out with no paper in the tray, the paper end feeler is not caught in the
paper tray due to its shape.

1.Mechanism
10
Paper Size Detection
The end fence is interlocked with a size detection actuator in an automatic detection system which
recognizes patterns using a 4-position push switch.
Size is detected by the detection patterns of switches 1, 2, 3, and 4. Tray set is detected by another
switch.
If the machine detects a change in the outputs from the switches, the machine detects the paper size
again from the new outputs.
If the paper size is selected manually by a user setting, the automatic size detection is overridden.
No.
Description
No.
Description
1
End fence
3
Tray set switch
2
Paper size switch
4
Size detection actuator
•Tray detection sizes:
A3, B4, A4 SEF, LT SEF, B5 SEF, and A4 LEF
•Tray size detection patterns
Size
Knob
1
2
3
4
A3 (DLT)
*1
1
0
0
0
B4 (LG)
*1
0
0
0
0
A4 SEF
0
0
1
1
LT SEF
0
1
1
0
B5 SEF
1
1
0
0
A4 LEF (LT LEF)
*1
0
0
0
1
-
0
0
1
0

1.Mechanism
11
Size
Knob
1
2
3
4
-
0
1
0
0
•"0" is switch ON (pushed), "1" is switch OFF.
•The sizes indicated with *1 are automatic paper size which can be switched over in SP
mode (SP5-180-001 to 003).
•If a pattern other than the above is detected, a blank is displayed on the operation panel.

1.Mechanism
12
Side Fences
If the tray is full of paper and it is pushed in strongly, the fences may deform or bend. This may cause
the paper to skew or the side-to-side registration to be incorrect. To correct this, each side fence has a
stopper [A] attached to it. Each side fence can be secured with a screw [B], for customers who do not
want to change the paper size.

1.Mechanism
13
Related SPs
SP No.
Selection
Def.
Overview
5-180-001
0
Tray size setting (0: A4LEF, 1: LTLEF) (Paper Size Detection)
5-180-002
0
Tray size setting (0: A3, 1: DLT) (Paper Size Detection)
5-180-003
0
Tray size setting (0: B4, 1: LG) (Paper Size Detection)

2.Replacement and Adjustment
14
2.Replacement and Adjustment
Covers and Roller
Paper Tray
Single paper feed unit
1. Pull out the paper tray [A].

2.Replacement and Adjustment
15
Double paper feed unit
1. Pull out the paper tray [A].
Rear Cover
Single paper feed unit
1. Remove the rear cover [A].

2.Replacement and Adjustment
16
Double paper feed unit
1. Remove the rear cover [A].
Pick-up Roller
This procedure is common to the single paper feed unit and the double paper feed unit.
1. Pull out the paper tray (Paper Tray).
2. Remove the pick-up roller unit [A] ( x 1, bearing x 1).