Ricoh PB3280 Quick start guide

Paper Feed Unit PB3280 / Paper
Feed Unit PB3300
Machine Code: D3FY / D3FZ
Field Service Manual
Ver. 1.0
Latest Release: December, 2018
Initial Release: December, 2018
Copyright (c) 2018 Ricoh Co.,Ltd.

Symbols, Abbreviations and Trademarks
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)
Trademarks
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1
Table of Contents
1. Detailed Descriptions.......................................................................................................................... 2
Changes from the Previous Machine..................................................................................................... 2
Specifications.......................................................................................................................................... 3
Parts Layout............................................................................................................................................ 4
Mechanism ............................................................................................................................................. 6
Paper Feed Separation Mechanism................................................................................................... 6
Drive Mechanism................................................................................................................................ 6
Friction Roller/ Pick-up Roller Release Mechanism........................................................................... 6
Paper Feed Transport Mechanism..................................................................................................... 6
Tray Base Plate Lift ............................................................................................................................ 7
Paper Size Detection.......................................................................................................................... 8
Remaining Paper Detection/Paper End Detection............................................................................. 9
2. Replacement and Adjustment .......................................................................................................... 11
Exterior Cover....................................................................................................................................... 11
The Aim of Anti-tip Components and Precautions........................................................................... 11
Rear Cover........................................................................................................................................ 11
Motors................................................................................................................................................... 13
Tray Lift Motor 1 (M3)....................................................................................................................... 13
Tray Lift Motor 2 (M4)....................................................................................................................... 13
Transport Motor (M1)........................................................................................................................ 13
Paper Feed Motor (M2) .................................................................................................................... 14
Board.................................................................................................................................................... 15
Controller Board (PCB1)................................................................................................................... 15
Sensors................................................................................................................................................. 16
Transport Sensor (S2) (S7).............................................................................................................. 16
Paper Feed Sensor (S1) (S6)........................................................................................................... 17
Paper End Sensor (S3) (S8)............................................................................................................. 18
Limit Sensor (S4) (S9)...................................................................................................................... 18
Paper Feed Unit ................................................................................................................................... 19
2nd Paper Feed Unit......................................................................................................................... 19
1st Paper Feed Unit.......................................................................................................................... 20
Rollers................................................................................................................................................... 24
Pick-up Roller ................................................................................................................................... 24
Feed Roller ....................................................................................................................................... 24
Friction Roller.................................................................................................................................... 25

1.Detailed Descriptions
2
1.Detailed Descriptions
Changes from the Previous Machine
•Making it Easier to Attach/Detach the Paper Feed Unit
Changes have been made to the screw position and wiring to make it easier to attach and detach
the paper feed unit.
For details about the replacement procedure, refer to “Paper Feed Unit”.
•Antistatic Control
Metal cover [A] for antistatic control has been added to the transport sensor.
When replacing the sensor, this cover will also be used after replacement, so remove it from the
old sensor. When you do so, be careful not to deform or damage anything.

1.Detailed Descriptions
3
Specifications
Item
Specifications
Feed system:
Paper Feed Unit PB3280: RF (Roller Friction) paper feed system+ Pick-up
solenoid
Paper Feed Unit PB3300: RF (Roller Friction) paper feed system
Paper size:
•Paper sizes that can be detected automatically
EU: A3 SEF, A4 LEF/SEF, A5 LEF, B4 JIS SEF, B5 JIS LEF/SEF, 81/2 × 11
SEF, SRA3 SEF
NA: A4 LEF, A5 SEF, A6 SEF, B4 JIS SEF, B5 JIS LEF, B6 JIS SEF, 81/2 ×
13 SEF, 81/4 × 14 SEF, 81/4 × 13 SEF, 8 × 13 SEF, 8 × 10 SEF, 71/4 × 101/2
SEF, 51/2 × 81/2 SEF, 8K SEF, 16K LEF/SEF, 11 × 15 SEF, 10 × 14
SEF, SRA3 SEF
•Select the paper size using the Tray Paper Settings menu
EU: A5 SEF, A6 SEF, B6 JIS SEF, 11 × 17 SEF, 81/2 × 14 SEF, 81/2 × 13
SEF, 81/2 × 11LEF, 81/4 × 14 SEF, 81/4 × 13 SEF, 8 × 13 SEF, 8 × 10 SEF,
71/4 × 101/2 LEF/SEF, 51/2 × 81/2 SEF, 8K SEF, 16K LEF/SEF, 12 × 18
SEF, 11 × 15 SEF, 10 × 14 SEF, 81/2 × 132/5 SEF
NA: A3 SEF, A4 LEF, A5 SEF, A6 SEF, B4 JIS SEF, B5 JIS LEF, B6
JIS SEF, 81/2 × 13 SEF, 81/4 × 14 SEF, 81/4 × 13 SEF, 8 × 13 SEF, 8 ×
10 SEF, 71/4 × 101/2 SEF, 51/2 × 81/2 SEF, 8K SEF, 16K LEF/SEF, 11 × 15
SEF, 10 × 14 SEF, SRA3 SEF
•Custom size
Vertical: 90.0–320.0 mm
Horizontal: 148.0–457.2 mm
Paper weight:
60–300 g/m2 (16 lb. Bond–110 lb. Cover) Plain Paper 1–Thick Paper 4
Paper capacity (80
g/m2, 20 lb. Bond):
550 sheets x 2 trays
Power
consumption:
21 W (Power is supplied from the main unit.)
Dimensions (W x D
x H):
587 x 685 x 247 mm (23.2 x 27.0 x 9.8 inches)
Weight:
Approx. 23 kg (50.8 lb.)

1.Detailed Descriptions
4
Parts Layout
No.
Description
1
Paper size detection switch (SW1) (SW3)
2
Tray set detection switch (SW2) (SW4)
3
Pick-up roller
4
Feed roller
5
Transport roller
6
Friction roller

1.Detailed Descriptions
5
No.
Description
No.
Description
1
Paper size detection switch (SW1) (SW3)
8
Dehumidification heater (Option) (H1)
2
Controller board (PCB1)
9
Paper feed sensor (S1) (S9)
3
Tray set detection switch (SW2) (SW4)
10
Paper end sensor (S3) (S8)
4
Tray lift motor (M3) (M4)
11
Transport sensor (S2) (S7)
5
Paper feed motor (M2)
12
Limit sensor (S4) (S9)
6
Transport motor (M1)
13
Pick-up solenoid (SOL1) (SOL2)
7
Transport cover switch (SW5)
-
-

1.Detailed Descriptions
6
Mechanism
Paper Feed Separation Mechanism
Paper feed is an RF paper feed system. The paper feed unit comprises a Pick-up roller, Feed roller and
Friction roller. These rollers are high durability.
In the RF system, paper separation is assisted by the resistance of a separating roller with a torque
limiter (reverse drive is not performed).
Drive Mechanism
Pick-up roller and Feed roller are driven by the paper feed motor (M2) [A]. Transport roller is driven by
the transport motor (M1) [B]. Friction roller is not driven.
Friction Roller/ Pick-up Roller Release Mechanism
When the paper feed tray is set, the Friction roller comes in contact with the Feed roller, and the Pick-
up roller contacts the uppermost transfer sheet.
However, when the paper feed tray is pulled out, to prevent paper dropout, the contact between the
Feed roller and Friction roller, and between pick-up roller and paper is released.
Paper Feed Transport Mechanism
In this MFP, to maintain a fixed clearance between sheets, a paper feed sensor (S1) is provided
between the Pickup roller and the Feed roller, which adjusts the paper feed timing.

1.Detailed Descriptions
7
1. The paper feed motor (M2) turns ON, and supplies the first sheet.
2. To prevent transport of the next sheet, the pickup solenoid (SOL1) switches ON just before the
trailing edge of the first sheet leaves the Pickup roller, and the Pickup roller separates from the
paper surface.
3. Just before the trailing edge of the first sheet leaves the paper feed motor (M2), the paper feed
motor (M2) switches OFF.
However, at this time, when the paper feed sensor (S1) detects no sheet (when the second sheet
is not transported to the paper feed sensor position), pre-feed is performed without switching the
Paper feed motor OFF.
Pre-feed is as follows.
1. The pickup solenoid (SOL1) switches OFF, and the second sheet of paper is transported to the
paper feed sensor position.
2. When the trailing edge of the second sheet passes the Feed roller, the paper feed motor (M2)
is switched OFF. The pickup solenoid (SOL1) remains OFF.
4. Just before the trailing edge of the first sheet passes the Feed roller, the pickup solenoid (SOL1) is
switched OFF, and the pickup roller is brought in contact with the paper surface.
5. When the first sheet is transported a predetermined distance by the downstream transport roller,
the paper feed motor (M2) is switched ON to supply the second sheet.
Tray Base Plate Lift
When the paper feed tray is set in the main unit, the tray set detection switch (SW2) switches ON, and it
is detected that the tray is set. At this time, the coupling of the lift motor engages with the shaft at the
rear of the tray, the motor rotates, and the tray base plate is lifted up. The paper surface pushes up the
pickup roller, the tray base plate is lifted until the upper limit sensor (S4) switches OFF (blocked), and
the printer enters the standby mode.
When the paper feed tray is removed, the coupling is disengaged, and the base plate descends. At this
time, the tray lift motor (M3) rotates until the coupling returns to the home position.

1.Detailed Descriptions
8
No.
Description
No.
Description
1
Tray Lift motor (M3)
3
Tray rear side shaft
2
Coupling
4
Tray base plate
No.
Description
No.
Description
1
Upper limit sensor (S4)
2
Pick-up roller
Paper Size Detection
The end fence interlocks mechanically with the size detection actuator, and when the end fence is
moved, the size detection actuator also moves.
When the paper feed tray is set, 4 size detection switches switch ON/OFF depending on the position of
the size detection actuator. Paper size is detected by the detected combination of these switches.

1.Detailed Descriptions
9
No.
Description
No.
Description
1
End fence
3
Size detection actuator
2
Paper size detection switch (SW1)
4
Tray set detection switch (SW2)
Size detection switch operation
Paper size
Size detection switch
SW4
SW3
SW2
SW1
SRA3 (12”×18”)
1
0
1
0
A3 (DLT)
0
1
0
0
B4 (LG)
0
0
1
1
0
1
1
1
A4_SEF
1
1
1
0
LT_SEF
1
1
0
0
B5_SEF
1
0
0
0
A4_LEF (LT_LEF)
0
0
0
1
B5_LEF (Exe_LEF)
0
0
1
0
A5_LEF
0
1
0
1
Remaining Paper Detection/Paper End Detection
Remaining paper detection
Detection of paper remaining in the Paper feed tray is performed by a combination of ON/OFF
(contact/non-contact) of contact-type remaining detection plates (printed circuits) CN-3, CN-5.
When the amount of remaining paper decreases, and the tray lift motor (M3) rotates, the remaining
paper sensors CN-3 and CN-5 in the motor are turned ON/OFF.
The following 4 levels of remaining paper can be detected:
Amount remaining
100%
70%
30%
10%
CN-3
OFF
ON
ON
OFF

1.Detailed Descriptions
10
Amount remaining
100%
70%
30%
10%
CN-5
OFF
OFF
ON
ON
Control panel remaining paper display
4 bars
3 bars
2 bars
1 bar
Paper end detection
When the paper feed tray is empty, the paper end sensor (S3) switches ON (unblocked) due to the end
feeler.
No.
Description
No.
Description
1
Paper end sensor (S3)
3
Slot in the tray base plate
2
End feeler
-
-

2.Replacement and Adjustment
11
2.Replacement and Adjustment
Exterior Cover
The Aim of Anti-tip Components and Precautions
The anti-tip components are necessary for meeting the requirements of IEC60950-1, the international
standard for safety.
The aim of these components is to prevent the products, which are heavy in weight, from toppling as a
result of people running into or leaning onto the products, which can lead to serious accidents such as
persons becoming trapped under the product. (U.S.: UL60950-1, Europe: EN60950-1)
Therefore, removal of such components must always be with the consent of the customer.
Do not remove them at your own judgment.
Rear Cover
1. Remove the securing brackets.

2.Replacement and Adjustment
12
2. Remove the rear cover [A] ( ×2).

2.Replacement and Adjustment
13
Motors
Tray Lift Motor 1 (M3)
1. Remove the rear cover (Rear Cover).
2. Remove the tray lift motor 1(M3) [A] ( ×2, ×1).
Tray Lift Motor 2 (M4)
1. Remove the rear cover (Rear Cover).
2. Remove the tray lift motor 2 (M4) [A] ( ×2, ×1).
Transport Motor (M1)
1. Remove the rear cover (Rear Cover).

2.Replacement and Adjustment
14
2. Remove the transport motor (M4) [A] ( ×2, ×1).
Paper Feed Motor (M2)
1. Remove the rear cover (Rear Cover).
2. Remove the paper feed motor (M2) [A] ( ×2, ×1).