Epson FX-870/1170 User Manual download pdf (Page 86)

Disassembly

and Assembly

Removing the Printhead

Remove the paper guide assembly, ribbon, top cover, front cover, paper eject cover, and tractor

unit. (See page 4-5.)

Remove the two CBS

(M3x8)

screws from the printhead, lift the printhead up, and remove the

FFC cable.

Remove the printhead.

FFC

Figure 4-5. Removing the Printhead

Epson

FX-870/1170

4-7

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 180 181

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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Epson FX-870/1170 User Manual Page 86

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