Epson FX-870/1170 User Manual Page 78
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Disassembly and Assembly
Chapter 4
Disassembly and Assembly
Precautions
.............................................................................................
4-1
Tools
........................................................................................................
4-1
Service Checks After Repair
...................................................................
4-2
Screw Specifications
...............................................................................
4-3
Notes for Unit Removal and Installation
...............................................
4-4
Items to Remove Before Disassembling the Printer
.............................
4-5
Removing the Panel Unit
.......................................................................
4-6
Removing the Printhead
........................................................................ 4-7
Removing the Upper Housing Assembly
...............................................
4-8
Removing the Printer Mechanism
.........................................................
4-9
Removing the Platen Assembly
................................................
4-10
Removing the Rear Frame Assembly
.......................................
4-11
Removing the CR Motor Assembly
...........................................
4-12
Removing the PF Motor Assembly
...........................................
4-13
Disassembling the PF Gear Train
............................................
4-14
Removing the Carriage Guide Assembly
.................................
4-15
Removing the Ribbon Drive
(RD) Assembly
............................
4-17
Removing the Home Position (HP) Sensor
...............................
4-18
Removing the Platen Gap (PG) Sensor
....................................
4-18
Removing the Front and Rear Paper End (PE) Sensors......
.......
.4-19
Removing the Release Sensor
...................................................
4-20
Arranging the Cables
................................................................
4-21
Disassembling the Tractor Unit
...............................................
4-22
Removing the C094
MAIN Board Assembly
............................
4-23
Removing the C076 PSB Board Assembly
...............................
4-24
List of Figures
Figure 4-1.
Flowchart for Disassembling the Printer
......................... 4-4
Figure 4-2.
Removing the Paper Guide Assembly
..............................
4-5
Figure 4-3. Removing the Panel Unit
..................................................
4-6
Figure 4-4. Connecting the FFC Cable to the Panel Unit
..................
4-6
Figure 4-5. Removing the Printhead
................................................... 4-7
Figure 4-6. Removing the Upper Housing Assembly
..........................
4-8
Figure 4-7.
Removing the Printer Mechanism
....................................
4-9
Figure 4-8. Removing the Platen Assembly
......................................
4-10
Figure 4-9. Removing the Rear Frame Assembly
.............................
4-11
Figure 4-10. Removing the
CR Motor Assembly
.................................
4-12
Figure 4-11. Positioning the CR Motor Assembly
...............................
4-12
Epson FX-870/1170
4-i
- 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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