Epson FX-870/1170 User Manual Page 4
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- Table of contents
- TROUBLESHOOTING
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Precautions
Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2)
damage to equipment.
WARNING
Signals a precaution which, if ignored, could result in serious or fatal personal
injury. Great caution should be exercised in performing procedures preceded by a
WARNING heading.
CAUTION
Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/
maintenance procedures.
WARNING
1.
Always disconnect the product from both the power source and the host
computer before performing any maintenance or repair procedure.
2.
No work should be performed on the unit by persons unfamiliar with
basic safety measures as dictated for all electronics technicians in their
line of work.
3.
When performing testing as dictated within this manual, do not connect
the unit to a power source until instructed to do so. When the power
supply cable must be connected, use extreme caution in working on the
power supply and other electronic components.
CAUTION
1.
Repairs on Epson products should be performed only by an Epson certi-
fied repair technician.
2. Make certain that the source voltage is the same as the rated voltage
listed on the serial number/rating plate. If the Epson product has a
primary AC rating different from the available power source, do not
connect it to the power source.
3.
Always verify that the Epson product has been disconnected from the
power source before removing or replacing printed circuit boards and/or
individual chips.
4.
In order to protect sensitive pP chip and circuitry, use static discharge
equipment, such as anti-static wrist straps, when accessing internal
components.
5.
Replace malfunctioning components only with those components recom-
mended by the manufacturer; introduction of second-source ICs or other
nonapproved components may damage the product and void any appli-
cable Epson warranty.
Epson
0(-870/l
170
- 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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