Ricoh SR4120 Quick start guide

Finisher SR4120, Booklet Finisher
SR4130
Machine Code: D3CG, D3CH
Field Service Manual
Ver 1.10
Latest Release: Jan, 2017
Initial Release: Oct, 2016
Copyright (c) 2016 - 2017 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
Screw: Blue
Connector
Clamp
E-ring
Flat Flexible Cable
Timing Belt
Hook (sensors)
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
Covers.................................................................................................................................................................... 3
Rear Upper Cover, Rear Lower Cover, Upper Cover ....................................................................................... 3
Front Cover, Front Left Side Cover .................................................................................................................. 5
Paper Guide Cover............................................................................................................................................ 6
Paper Exit Cover ............................................................................................................................................... 8
Lower Tray...................................................................................................................................................... 11
Proof Tray ....................................................................................................................................................... 11
Upper Tray ...................................................................................................................................................... 12
End Fence (SR4130) ....................................................................................................................................... 12
End Fence (SR4120) ....................................................................................................................................... 13
Paper Guide Unit............................................................................................................................................. 14
Boards.................................................................................................................................................................. 17
Main Board...................................................................................................................................................... 17
Main Motors........................................................................................................................................................ 19
Corner Stapling Unit ....................................................................................................................................... 19
Paper Exit Gate Motor..................................................................................................................................... 24
Leading Edge Guide Motor............................................................................................................................. 24
Trailing Edge Pressure Plate Motor ................................................................................................................ 25
Stacking Roller Motor..................................................................................................................................... 25
Feed Out Motor............................................................................................................................................... 26
Jogger Motor................................................................................................................................................... 26
Paper Guide Motor.......................................................................................................................................... 27
Sensors................................................................................................................................................................. 29
Shift Tray Paper Sensor................................................................................................................................... 29
Trailing Edge Pressure Plate HP Sensor ......................................................................................................... 29
Stacking Roller HP Sensor.............................................................................................................................. 30
Staple Tray Paper Sensor ................................................................................................................................ 32
Paper Guide HP Sensor................................................................................................................................... 33
Booklet Unit Motors............................................................................................................................................ 35
Booklet Stapler Unit........................................................................................................................................ 35
Press Fold Motor............................................................................................................................................. 37
Booklet Jogger Motor...................................................................................................................................... 40
Stapler Unit.......................................................................................................................................................... 41
Stapler Unit ..................................................................................................................................................... 41
Punch Unit........................................................................................................................................................... 44
Fold Adjustments ................................................................................................................................................ 47

2
Flat Fold Roller Alignment ............................................................................................................................. 47
Adjusting the Folding Speed........................................................................................................................... 49
Flat Fold Booklet Unit Home Position Adjustment ........................................................................................ 49
Paper Guide Unit................................................................................................................................................. 52
Paper Exit Cover, Optional Output Jogger Unit.............................................................................................. 52
Paper Guide Unit............................................................................................................................................. 57
Paper Guide Unit Sensor................................................................................................................................. 60
Paper Guide Motor.......................................................................................................................................... 61
2. Detailed Descriptions.......................................................................................................................................63
Overview ............................................................................................................................................................. 63
Layout ............................................................................................................................................................. 63
Operation Details................................................................................................................................................. 71
Shift Operation (Shift Transport).................................................................................................................... 71
Pre-stack Operation (In Corner Stapling)........................................................................................................ 71
Pre-stack Operation (Booklet Stapling)........................................................................................................... 72
Upper Tray Shift Drive / Limit Sensor / Full Sensor ...................................................................................... 73
Pull-in Roller / Paper Stack Holder................................................................................................................. 75
Corner Stapling ............................................................................................................................................... 77
Saddle Stapling (Booklet Stapling)................................................................................................................. 82

1.Replacement and Adjustment
3
1. Replacement and Adjustment
Covers
Rear Upper Cover, Rear Lower Cover, Upper Cover
1. Rear upper cover [A] ( x 2)
2. Rear lower cover [A] ( x 2)

1.Replacement and Adjustment
4
3. Open the front door [A], and remove the screws of the upper cover. ( x 5)
4. Upper cover [A] ( x 2, x 2)

1.Replacement and Adjustment
5
5. Check the positions of the bosses and hooks before removing the upper cover.
6. When the upper cover is re-attached, tighten the screws on the right side in the order shown below: 1 > 2 > 3.
Front Cover, Front Left Side Cover
1. Open the front door [A], and then remove the front door bracket [B]. ( x 1)
2. Front door [A]

1.Replacement and Adjustment
6
3. Front left side cover [A] ( x 2)
Paper Guide Cover
1. Remove rear upper cover [A] ( x1).
2. Remove shift tray [A] ( x1).