Preliminary Checks; Error - Epson 890N - FX B/W Dot-matrix Printer Service Manual

EPSON FX-890/2190

3.1.3 Preliminary Checks

Before starting troubleshooting, be sure to verify that the following conditions are all
met:
The power supply voltage must be within the specification limits. (Measure the
voltage at the wall socket.)
The POWER CORD must be free from damage, short circuit or breakage, or
miswiring in the POWER CORD.
The printer must be grounded properly.
The printer should not be located in a place where it can be exposed to too high or
low temperature, too high or low humidity, or abrupt temperature change.
The printer should not be located near waterworks, near humidifiers, near heaters
or near flames, in a dusty atmosphere or in a place where the printer can be
exposed to blast from an air conditioner.
The printer should not be located in a place where volatile or inflammable gases
are produced.
The printer should not be located in a place where it can be exposed to direct rays
of the sun.
The printer must be located in a well-ventilated place.
The printer must be placed on a strong and steady level table (without an
inclination larger than 5 degrees).
The paper used must conform to the specification.
There must be no error in handling of the printer.
The Regular Replacement Parts must have been replaced every time their
respective specified numbers of sheets had been printed.
When printing can not be performed, execute self testing and check to see if any
trouble occurs. (Refer to "Operations at Power-on" on page
In addition, check the values for "Default Setting".
page -33.)
Check to see if the surface or the inside of the printer is soiled remarkably or if any
component is broken.
Make certain that the harness is connected properly.
Troubleshooting
-31.)
(Refer to "Default Setting" on
Overview
Make sure that gears of the printer mechanism do not rub each other excessively.
Confirm that all gears are engaged properly.
Make certain that the rollers inside the printer are free from soiling and free from
scratches.
Clear EEPROM to return the internal settings of the printer to the factory default
settings, if necessary. (Refer to "EEPROM Clear Function" on page

3.1.4 Error

As this printer checks its condition by itself at power-on, when it finds any trouble, it
indicates it with error indication buzzer and LEDs. The error indications and
corresponding remedies are shown in the table below:
Table 3-1. Error Indications
Beep
Error
sounds
•••
Paper out error
•••
Release lever operation error
•••
Cover open error
•••
Paper eject error
Fatal error -----
Note : The symbols used in the table above represent the following:
"•": Beeper sounds about 100 ms and interval is about100 ms
"-":Beeper sounds about 500 ms and interval is about100 ms
Revision B
-35.)
Cause Remedy
When printer fails to load
Set paper in the printer
a sheet, it goes into paper
correctly.
out error.
When release lever
position is wrong, printer Set the release lever in the
goes into release lever correct position.
error.
When printer's cover is
open, printer goes into Close the cover.
cover open error.
When printer fails to eject
Remove the jammed paper
a sheet, it goes into paper
from inside the printer.
out error.
Turn off the printer once
A failure related to certain and turn it back on, to see
components is detected. if the same error occurs
again..
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