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Epson FX 890 - B/W Dot-matrix Printer User Manual

Epson FX 890 - B/W Dot-matrix Printer
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FX-1180/FX-880 Service Manual
Chapter 4 DISASSEMBLY AND ASSEMBLY
Rev. B
4-1
4.1 OVERVIEW
This section describes procedures for disassembling and assembling the printer. Unless otherwise
specified, disassembled units or components can be re-assembled by reversing the disassembly
procedure. Therefore, no assembly procedures are included in this section. Precautions for any
disassembly or assembly procedure are described under the heading “
CHECK POINT
”. Any
adjustments required after disassembling the units are described under the heading
ADJUSTEMNTS
”.
4.1.1 Disassembly Precautions
Follow the precautions below when disassembling the printer.
WARNING
Before disassembling, assembling or adjusting the printer,
disconnect the power supply cable from the AC power socket.
Failure to do so might cause personal injury.
Be careful with the printhead when you handle it as it may be very
hot right after printing.
Do not touch the heat sink attached to the switching FET (Q1) on the
power supply board right after power off, as it may be very hot.
Never touch the heat sink attached to the switching FET (Q1) while
The AC power cable is connected to the AC outlet, as it is not
electrically isolated.
CAUTION
To maintain efficient printer operation, take the precautions below:
Use only the recommended tools for maintenance work.
Use only the recommended lubrications and adhesives (See Chapter
6.)
Adjust the printer only in the manner described in this manual.
Be aware that the existing drawings for Fx-880 are substituted for
FX-1180. It is because no exclusive drawings for FX-1180 has been
made since the major mechanical difference between FX-1180 and
FX-880 is width only.
4.1.2 Tools and Instruments
The table below lists the tools and the instruments required for disassembling, assembling or
adjusting the printer. Use only tools that meet these specifications.
Table 4-1 . Tool and Instrument List
Name Specification EPSON Part No.
Phillips Screwdriver No.2 B743800200
Phillips Screwdriver No.1 B743800100
Box Driver 7.0mm Diagonal B741700200
Tweezers
B741000100
Round-nose pliers
B740400100
Thickness gage
B776702201
Soldering iron
B740200100
E-Ring holder Size: #6 B740800800
Multi-Meter OHM/Voltage/Current
Oscilloscope Min. 50MHz
Note) All tools and instruments listed above are commercially available.

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Epson FX 890 - B/W Dot-matrix Printer Specifications

General IconGeneral
BrandEpson
ModelFX 890 - B/W Dot-matrix Printer
CategoryPrinter
LanguageEnglish

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