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Duplo DF-920 Maintenance Manual
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1-19
12H-M12M0-0309-0
2-2-6.
Adjusting the tension of the paper feed tray automatic up/down drive timing belt
(DF-920 only)
If the tension of the belt is not appropriate, problems
such as faulty drive and jumping of the belt will occur.
Move the tension idler and adjust the tension of the
belt so that it slacks by 3 to 5 mm (0.12" to 0.20")
when a pressure of 3 N (306 gf) is applied to the belt
using a 5 N (510 gf) tension gauge.
20
22
Table of Contents
Paper Folder
2
Table of Contents
2
Chapter 1 Mechanism
4
Outline of Machine
4
Names of Parts
4
Layout of Folding Plates and Folded Size by Folding Mode
6
Outline of Mechanisms and Adjustments
8
Folding Section and Drive Mechanism
8
Paper Feed Tray
17
Separating Mechanism
25
Paper Feed Inlet
26
Paper Ejection Mechanism
28
Folding Plates
31
Exterior and Detection Switches
49
Periodic Inspections
52
Inspection Points and Procedure
52
Other General Precautions
52
Troubleshooting Guide (Mechanical Causes)
54
When Paper Is Conveyed Skewed
54
When Paper Wrinkles
54
When Abnormal Sounds (Metal Sliding Sounds) Are Produced During Rotation of Folding Rollers
54
When Stacker Belt Rotates Heavily
54
Stopping Position of Paper Lead Edge Does Not Stabilize During Paper Feed, and Paper Jams Near Paper Feed Inlet Sensor
55
When Paper Slips Frequently
55
When Continuous-Feed Occurs Frequently with Small Paper (B7, INV, Etc.)
55
When Folding Stopper Moves Abnormally Slow
55
When Stacker Belt Slips
55
Paper Jams at Folding Unit or
56
At Folded Line with Thin Paper
56
Paper Jams at Folding Unit or Flattening of Folded Line Occurs During Folding Modes Other than Single Folding and When Thick Paper
56
Single Folding and When Thick Paper Is Used
56
When Folding Misalignment Along Sides of Paper Is Large
56
When Folding Misalignment Along Vertical Length of Paper Is Large
56
When Motor Lock of Folding Plate 2 Occurs
56
Electrical Components
57
Block Diagram of Structure and Outline of each Block
58
Chapter 2 Electrical
58
Control Panel
62
MC Unit
62
Paper Ejection Outlet Sensor
62
Paper Feed Inlet Sensor
62
Paper Switch
62
Top Cover Switch
62
Folding Plate 1 Index Sensor A/B
63
Folding Plate 1 Set Switch
63
Folding Plate 2 Index Sensor A/B
63
Folding Plate 2 Set Switch
63
Paper Ejection Cover Sensor (DF-920 Only)
63
Paper Feed Tray Lower Limit Detection Switch (DF-920 Only)
63
Paper Feed Tray Upper Limit Detection Switch (DF-920 Only)
63
Side Cover Switch (DF-920 Only)
63
Folding Plate 1 Home Sensor
64
Folding Plate 1 Motor
64
Folding Plate 2 Home Sensor
64
Folding Plate 2 Motor
64
Main Motor
64
Paper Feed Clutch
64
Paper Feed Tray Up/Down Motor (DF-920 Only)
64
Stacker Roller Home Sensor
64
Stacker Roller Moving Motor
64
Main Motor Index Sensor
65
Paper Ejection Clutch
65
Paper Feed Tray Set Switch (DF-915 Only)
65
Switching Power Supply
65
Power Switch
65
Power Inlet
65
Power Cord
65
PS P.W.B. Unit
65
Errors and Causes
66
When Paper Jams Occur
66
Troubleshooting
66
Other Condition Messages
68
Emergency Measures When the Paper Switch Damages
70
Maintenance Mode
71
Entering the Maintenance Mode
71
Setting the Maintenance Mode
71
List of Maintenance Modes
72
Precautions for Setting Folding Stopper Fixed Mode (DF-920 Only)
83
Backup Data Form
84
Initializing the Memory
86
Precautions on Replacing the MC Unit
87
Upgrading the Program Version
88
Overall Schematic Diagram (DF-920)
89
Overall Schematic Diagram (DF-915)
90
Wiring Diagram 1/2 (DF-920)
91
Wiring Diagram 2/2 (DF-920)
92
Wiring Diagram 1/2 (DF-915)
93
Wiring Diagram 2/2 (DF-915)
94
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Duplo DF-920 Specifications
General
Brand
Duplo
Model
DF-920
Category
Folding Machines
Language
English
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