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FX-870/1170
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Epson FX-870/1170 User Manual Page 73
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Troubleshooting
Printer Mechanism
Figure 3-5. Platen Gap Sensor
Rear Paper Guide Assembly
3-20
Figure 3-6. Front and Rear PE Sensors
Epson
FX-870/1170
1
2
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68
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FX-870/1170
1
FCC Compliance Statement
2
Copyright Notice
3
Trademarks
3
Precautions
4
How to Use this Manual
5
EptmnFX-870/1170
6
Numbers and Addresses
7
Contents
8
Removing the Panel Unit
9
Printer Features
10
List of Figures
11
List of Tables
11
80-column model
14
136-column model
14
Hardware Specifications
15
FX-8700170
20
0.12” (3.0 mm) or more
22
EpsonFX-870/1170
22
Epson FX-8700170
24
Interfaces
25
Control Panel
29
Default Settings
32
Position 1 (3rd step)
37
Printer Initialization
38
Table 1-21. Buzzer Functions
39
Main Components
40
,,DAld-lfil-l
41
Epson FX-87011170
42
Housing Assembly
44
Chapter 2
48
Site Requirements
49
The Correct Power On Sequence
49
Parallel Cables
50
Serial Cables
50
Serial Cable
51
Tips to Increase Printer Life
52
Troubleshooting
53
Troubleshooting 3
54
Table 3-2. Sensor Test Points
55
Error Codes
58
Problem Isolation
59
Serial Communications Errors
60
Possible Cause
61
3-10 Epson
63
Self-Test
66
Chart 6. Data
68
Host is Printed Incorrectly
68
FX-870/i
70
Connector Locations
71
Sensor Locations
72
Figure 3-5. Platen Gap Sensor
73
Disassembly and Assembly
78
Disassembly and Assembly 4
80
Service Checks After Repair
81
Screw Specifications
82
Removing the Printhead
86
Removing the
87
Insertion
93
Printer Mechanism
97
Arranging the Cables
100
Disassembly
103
Assembly
103
Epson FX-870/1170
103
Adjustments, Maintenance, and
105
Lubrication
105
Platen Gap Adjustment
106
Preventive Maintenance
110
Table 5-2. Lubrication Points
111
Principles of Operation
113
Carriage Mechanism
118
Paper Handling Mechanisms
120
Ribbon Advance Mechanism
133
Power Supply Operation
134
Pfinciples of Operation
135
Secondary
136
Control Circuit Operation
137
E05A66YA (IC4)
139
FX-87W1170
139
Sensor Circuits
141
Carriage Motor Drive Circuit
142
Printhead Drive Circuit
144
Parallel Interface Circuit
144
PROM Control Circuit
145
CH1=50V TIME=2ps
146
Reference Materials
153
Reference Materials 7
154
Circuit Diagrams
158
Circuit Diagram
159
C076 PSB Power Supply Board
160
CO76 PSB Power Supply Board
161
Figure 7-6
162
Figure 7-7
163
Outline Drawings
166
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