Ithaca 75 Manuals

Manuals and User Guides for Ithaca 75. We have 1 Ithaca 75 manual available for free PDF download: User Manual

Ithaca 75 User Manual (109 pages)

Series 70

Brand: Ithaca | Category: Printer | Size: 0.4 MB

Federal Communications Commission
2
Table of Contents
3
Troubleshooting
4
Index
5
Product Information
9
Series 70 Printer
9
Communication Interfaces
10
Parallel Interface
10
Serial Interface
10
RS-232C Specifications
11
Technical Specifications
12
Performance and Reliability
12
Printing
12
Physical Dimensions
12
Environmental Operating Limits
13
Power Requirements
13
Consumable Products
13
Maintenance
15
Necessary Tools
15
Lubricating the Printer
16
Lubricating the Journal Take-Up Gears and Pressure Roll Bearing
16
Journal Take-Up
16
Lubricating the Auto Cutter Assembly
17
Lubricating the Transport-Auto Cutter Assembly
18
Cleaning the Printer
19
Making Adjustments
19
Diagnosing the Print Quality
20
Adjusting the Platen Parallel to the Printhead
21
Adjusting the Platen Air Gap
23
Replacing the Feed Roll Shaft
25
Forms Compensation
26
Disassembly
27
Necessary Tools
27
Control Board
27
Interconnect Board
27
Serial Interface Board
27
AC Switch Assembly
27
Carriage Assembly
27
Transport-Auto Cutter Assembly
28
Removing the Transport-Auto Cutter Assembly
28
Disassembling the Transport-Auto Cutter Assembly
30
Auto Cutter Assembly
31
Auto Cutter Assembly (Without Transport)
34
Removing the Auto Cutter Assembly
34
Disassembling the Auto Cutter Assembly
36
Base Assembly
38
AC Switch Assembly and Power Transformer
40
Serial Interface Board
42
Control Board
44
Interconnect Board
46
Journal Bucket Assembly
48
Removing the Journal Bucket Assembly
48
Disassembling the Journal Bucket Assembly
50
Carriage Assembly
52
Space Motor Assembly
52
Carriage Shaft Bearing and Space Rack
54
Feed Roll Shaft
56
Linefeed Motor Assembly
58
Troubleshooting
61
Determining the Problem
61
Fuse
61
Printing
61
Carriage Does Not Operate Normally
61
Printer Is Dead
61
Printer Stops Printing
61
Fixing the Problem
62
Checking Connections and Resistance
80
Printhead
80
Resistance
80
Space Motor Assembly
81
Linefeed Motor
82
Linefeed
82
Appendix A: Spare Parts
83
Standard Printer Parts
83
Board Assembly
83
Paper Supply
84
Power Cord
84
Feed Roll Assembly
84
Optional Auto Cutter Parts
85
Appendix B: Theory of Operation
87
Electrical Operation
87
Circuit Operation
87
Initialization
88
Communication Interface Control
88
Printhead Drive Circuit
89
Communication Sequence
89
Carriage Drive
90
Space Motor Control
90
Linefeed
91
Slit Encoder
91
Alarm Circuits
92
Power Supply
92
Mechanical Operation
93
Printhead Mechanism and Operation
93
Space Mechanism and Operation
94
Ribbon Feed Mechanism and Operation
94
Paper Feed Mechanism and Operation
95
Paper-Low Detection Mechanism and Operation
95
Appendix C: Schematics
97
Schematics
97
Control Board
98
Serial Interface Board
102
Interconnect Board
104
Index
105

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