Overview; Specified Tools; Procedure For Troubleshooting - Epson 890N - FX B/W Dot-matrix Printer Service Manual

EPSON FX-890/2190

3.1 Overview

The printer may exhibit different symptoms for the same problem, which makes
troubleshooting more difficult. This section, however, provides simple and effective
ways to facilitate troubleshooting.
In addition, the User's Manual for EPSON EPSON FX-890/2190 describes detailed
steps to be taken for recovery from typical errors.
When you disassemble the printer, pull the power cable and the
interface cable out of the plug socket beforehand.
When you touch any surface which can become hot, take care
not to suffer a burn.
Use only specified tools to avoid impairing the quality of the
printer.
Use only specified lubricants and adhesives.
Carry out the adjustment by following the specified procedure.
Wear a wrist strap to discharge static electricity from the
human body, whenever possible.

3.1.1 Specified Tools

This printer does not require any specified tools for troubleshooting.
Troubleshooting

3.1.2 Procedure for Troubleshooting

Perform troubleshooting work according to the flowchart shown at right.
Before starting disassembly and assembly work, read and
understand thoroughly the contents of
(p.54)" .
START
3.1.3 Preliminary Checks (p.54)
3.2 Troubleshooting Based on Symptoms (p.55)
Adjustment (p.93) and Maintenance (p.98)
Figure 3-1. Troubleshooting Process Flowchart
Overview
3.1.3 "Preliminary Checks
Broken line arrow:
Refer to depending on the
result of diagnosis
3.3 Troubleshooting for Individual Units (p.64)
Revision B
53